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jsoneditor/jsoneditor.js

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/*!
* jsoneditor.js
*
* @brief
* JSONEditor is a web-based tool to view, edit, and format JSON.
* It shows data a clear, editable treeview.
*
* Supported browsers: Chrome, Firefox, Safari, Opera, Internet Explorer 8+
*
* @license
* This json editor is open sourced with the intention to use the editor as
* a component in your own application. Not to just copy and monetize the editor
* as it is.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy
* of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*
* Copyright (c) 2011-2013 Jos de Jong, http://jsoneditoronline.org
*
* @author Jos de Jong, <wjosdejong@gmail.com>
* @version 2.3.5
* @date 2013-12-09
*/
(function () {
/**
* @constructor JSONEditor
* @param {Element} container Container element
* @param {Object} [options] Object with options. available options:
* {String} mode Editor mode. Available values:
* 'tree' (default), 'view',
* 'form', 'text', and 'code'.
* {function} change Callback method, triggered
* on change of contents
* {Boolean} search Enable search box.
* True by default
* Only applicable for modes
* 'tree', 'view', and 'form'
* {Boolean} history Enable history (undo/redo).
* True by default
* Only applicable for modes
* 'tree', 'view', and 'form'
* {String} name Field name for the root node.
* Only applicable for modes
* 'tree', 'view', and 'form'
* {Number} indentation Number of indentation
* spaces. 4 by default.
* Only applicable for
* modes 'text' and 'code'
* @param {Object | undefined} json JSON object
*/
function JSONEditor (container, options, json) {
if (!(this instanceof JSONEditor)) {
throw new Error('JSONEditor constructor called without "new".');
}
// check for unsupported browser (IE8 and older)
var ieVersion = util.getInternetExplorerVersion();
if (ieVersion != -1 && ieVersion < 9) {
throw new Error('Unsupported browser, IE9 or newer required. ' +
'Please install the newest version of your browser.');
}
if (arguments.length) {
this._create(container, options, json);
}
}
/**
* Configuration for all registered modes. Example:
* {
* tree: {
* editor: TreeEditor,
* data: 'json'
* },
* text: {
* editor: TextEditor,
* data: 'text'
* }
* }
*
* @type { Object.<String, {editor: Object, data: String} > }
*/
JSONEditor.modes = {};
/**
* Create the JSONEditor
* @param {Element} container Container element
* @param {Object} [options] See description in constructor
* @param {Object | undefined} json JSON object
* @private
*/
JSONEditor.prototype._create = function (container, options, json) {
this.container = container;
this.options = options || {};
this.json = json || {};
var mode = this.options.mode || 'tree';
this.setMode(mode);
};
/**
* Detach the editor from the DOM
* @private
*/
JSONEditor.prototype._delete = function () {};
/**
* Set JSON object in editor
* @param {Object | undefined} json JSON data
*/
JSONEditor.prototype.set = function (json) {
this.json = json;
};
/**
* Get JSON from the editor
* @returns {Object} json
*/
JSONEditor.prototype.get = function () {
return this.json;
};
/**
* Set string containing JSON for the editor
* @param {String | undefined} jsonText
*/
JSONEditor.prototype.setText = function (jsonText) {
this.json = util.parse(jsonText);
};
/**
* Get stringified JSON contents from the editor
* @returns {String} jsonText
*/
JSONEditor.prototype.getText = function () {
return JSON.stringify(this.json);
};
/**
* Set a field name for the root node.
* @param {String | undefined} name
*/
JSONEditor.prototype.setName = function (name) {
if (!this.options) {
this.options = {};
}
this.options.name = name;
};
/**
* Get the field name for the root node.
* @return {String | undefined} name
*/
JSONEditor.prototype.getName = function () {
return this.options && this.options.name;
};
/**
* Change the mode of the editor.
* JSONEditor will be extended with all methods needed for the chosen mode.
* @param {String} mode Available modes: 'tree' (default), 'view', 'form',
* 'text', and 'code'.
*/
JSONEditor.prototype.setMode = function (mode) {
var container = this.container,
options = util.extend({}, this.options),
data,
name;
options.mode = mode;
var config = JSONEditor.modes[mode];
if (config) {
try {
if (config.data == 'text') {
// text
name = this.getName();
data = this.getText();
this._delete();
util.clear(this);
util.extend(this, config.editor.prototype);
this._create(container, options);
this.setName(name);
this.setText(data);
}
else {
// json
name = this.getName();
data = this.get();
this._delete();
util.clear(this);
util.extend(this, config.editor.prototype);
this._create(container, options);
this.setName(name);
this.set(data);
}
if (typeof config.load === 'function') {
try {
config.load.call(this);
}
catch (err) {}
}
}
catch (err) {
this._onError(err);
}
}
else {
throw new Error('Unknown mode "' + options.mode + '"');
}
};
/**
* Throw an error. If an error callback is configured in options.error, this
* callback will be invoked. Else, a regular error is thrown.
* @param {Error} err
* @private
*/
JSONEditor.prototype._onError = function(err) {
// TODO: onError is deprecated since version 2.2.0. cleanup some day
if (typeof this.onError === 'function') {
util.log('WARNING: JSONEditor.onError is deprecated. ' +
'Use options.error instead.');
this.onError(err);
}
if (this.options && typeof this.options.error === 'function') {
this.options.error(err);
}
else {
throw err;
}
};
/**
* @constructor TreeEditor
* @param {Element} container Container element
* @param {Object} [options] Object with options. available options:
* {String} mode Editor mode. Available values:
* 'tree' (default), 'view',
* and 'form'.
* {Boolean} search Enable search box.
* True by default
* {Boolean} history Enable history (undo/redo).
* True by default
* {function} change Callback method, triggered
* on change of contents
* {String} name Field name for the root node.
* @param {Object | undefined} json JSON object
*/
function TreeEditor(container, options, json) {
if (!(this instanceof TreeEditor)) {
throw new Error('TreeEditor constructor called without "new".');
}
this._create(container, options, json);
}
/**
* Create the TreeEditor
* @param {Element} container Container element
* @param {Object} [options] See description in constructor
* @param {Object | undefined} json JSON object
* @private
*/
TreeEditor.prototype._create = function (container, options, json) {
if (!container) {
throw new Error('No container element provided.');
}
this.container = container;
this.dom = {};
this.highlighter = new Highlighter();
this.selection = undefined; // will hold the last input selection
this._setOptions(options);
if (this.options.history && !this.mode.view) {
this.history = new History(this);
}
this._createFrame();
this._createTable();
this.set(json || {});
};
/**
* Detach the editor from the DOM
* @private
*/
TreeEditor.prototype._delete = function () {
if (this.frame && this.container && this.frame.parentNode == this.container) {
this.container.removeChild(this.frame);
}
};
/**
* Initialize and set default options
* @param {Object} [options] See description in constructor
* @private
*/
TreeEditor.prototype._setOptions = function (options) {
this.options = {
search: true,
history: true,
mode: 'tree',
name: undefined // field name of root node
};
// copy all options
if (options) {
for (var prop in options) {
if (options.hasOwnProperty(prop)) {
this.options[prop] = options[prop];
}
}
// check for deprecated options
if (options['enableSearch']) {
// deprecated since version 1.6.0, 2012-11-03
this.options.search = options['enableSearch'];
util.log('WARNING: Option "enableSearch" is deprecated. Use "search" instead.');
}
if (options['enableHistory']) {
// deprecated since version 1.6.0, 2012-11-03
this.options.history = options['enableHistory'];
util.log('WARNING: Option "enableHistory" is deprecated. Use "history" instead.');
}
if (options['mode'] == 'editor') {
// deprecated since version 2.2.0, 2013-04-30
this.options.mode = 'tree';
util.log('WARNING: Mode "editor" is deprecated. Use "tree" instead.');
}
if (options['mode'] == 'viewer') {
// deprecated since version 2.2.0, 2013-04-30
this.options.mode = 'view';
util.log('WARNING: Mode "viewer" is deprecated. Use "view" instead.');
}
}
// interpret the mode options
this.mode = {
edit: (this.options.mode != 'view' && this.options.mode != 'form'),
view: (this.options.mode == 'view'),
form: (this.options.mode == 'form')
};
};
// node currently being edited
TreeEditor.focusNode = undefined;
/**
* Set JSON object in editor
* @param {Object | undefined} json JSON data
* @param {String} [name] Optional field name for the root node.
* Can also be set using setName(name).
*/
TreeEditor.prototype.set = function (json, name) {
// adjust field name for root node
if (name) {
// TODO: deprecated since version 2.2.0. Cleanup some day.
util.log('Warning: second parameter "name" is deprecated. ' +
'Use setName(name) instead.');
this.options.name = name;
}
// verify if json is valid JSON, ignore when a function
if (json instanceof Function || (json === undefined)) {
this.clear();
}
else {
this.content.removeChild(this.table); // Take the table offline
// replace the root node
var params = {
'field': this.options.name,
'value': json
};
var node = new Node(this, params);
this._setRoot(node);
// expand
var recurse = false;
this.node.expand(recurse);
this.content.appendChild(this.table); // Put the table online again
}
// TODO: maintain history, store last state and previous document
if (this.history) {
this.history.clear();
}
};
/**
* Get JSON object from editor
* @return {Object | undefined} json
*/
TreeEditor.prototype.get = function () {
// remove focus from currently edited node
if (TreeEditor.focusNode) {
TreeEditor.focusNode.blur();
}
if (this.node) {
return this.node.getValue();
}
else {
return undefined;
}
};
/**
* Get the text contents of the TreeEditor
* @return {String} jsonText
*/
TreeEditor.prototype.getText = function() {
return JSON.stringify(this.get());
};
/**
* Set the text contents of the TreeEditor
* @param {String} jsonText
*/
TreeEditor.prototype.setText = function(jsonText) {
this.set(util.parse(jsonText));
};
/**
* Set a field name for the root node.
* @param {String | undefined} name
*/
TreeEditor.prototype.setName = function (name) {
this.options.name = name;
if (this.node) {
this.node.updateField(this.options.name);
}
};
/**
* Get the field name for the root node.
* @return {String | undefined} name
*/
TreeEditor.prototype.getName = function () {
return this.options.name;
};
/**
* Remove the root node from the editor
*/
TreeEditor.prototype.clear = function () {
if (this.node) {
this.node.collapse();
this.tbody.removeChild(this.node.getDom());
delete this.node;
}
};
/**
* Set the root node for the json editor
* @param {Node} node
* @private
*/
TreeEditor.prototype._setRoot = function (node) {
this.clear();
this.node = node;
// append to the dom
this.tbody.appendChild(node.getDom());
};
/**
* Search text in all nodes
* The nodes will be expanded when the text is found one of its childs,
* else it will be collapsed. Searches are case insensitive.
* @param {String} text
* @return {Object[]} results Array with nodes containing the search results
* The result objects contains fields:
* - {Node} node,
* - {String} elem the dom element name where
* the result is found ('field' or
* 'value')
*/
TreeEditor.prototype.search = function (text) {
var results;
if (this.node) {
this.content.removeChild(this.table); // Take the table offline
results = this.node.search(text);
this.content.appendChild(this.table); // Put the table online again
}
else {
results = [];
}
return results;
};
/**
* Expand all nodes
*/
TreeEditor.prototype.expandAll = function () {
if (this.node) {
this.content.removeChild(this.table); // Take the table offline
this.node.expand();
this.content.appendChild(this.table); // Put the table online again
}
};
/**
* Collapse all nodes
*/
TreeEditor.prototype.collapseAll = function () {
if (this.node) {
this.content.removeChild(this.table); // Take the table offline
this.node.collapse();
this.content.appendChild(this.table); // Put the table online again
}
};
/**
* The method onChange is called whenever a field or value is changed, created,
* deleted, duplicated, etc.
* @param {String} action Change action. Available values: "editField",
* "editValue", "changeType", "appendNode",
* "removeNode", "duplicateNode", "moveNode", "expand",
* "collapse".
* @param {Object} params Object containing parameters describing the change.
* The parameters in params depend on the action (for
* example for "editValue" the Node, old value, and new
* value are provided). params contains all information
* needed to undo or redo the action.
* @private
*/
TreeEditor.prototype._onAction = function (action, params) {
// add an action to the history
if (this.history) {
this.history.add(action, params);
}
// trigger the onChange callback
if (this.options.change) {
try {
this.options.change();
}
catch (err) {
util.log('Error in change callback: ', err);
}
}
};
/**
* Start autoscrolling when given mouse position is above the top of the
* editor contents, or below the bottom.
* @param {Number} mouseY Absolute mouse position in pixels
*/
TreeEditor.prototype.startAutoScroll = function (mouseY) {
var me = this;
var content = this.content;
var top = util.getAbsoluteTop(content);
var height = content.clientHeight;
var bottom = top + height;
var margin = 24;
var interval = 50; // ms
if ((mouseY < top + margin) && content.scrollTop > 0) {
this.autoScrollStep = ((top + margin) - mouseY) / 3;
}
else if (mouseY > bottom - margin &&
height + content.scrollTop < content.scrollHeight) {
this.autoScrollStep = ((bottom - margin) - mouseY) / 3;
}
else {
this.autoScrollStep = undefined;
}
if (this.autoScrollStep) {
if (!this.autoScrollTimer) {
this.autoScrollTimer = setInterval(function () {
if (me.autoScrollStep) {
content.scrollTop -= me.autoScrollStep;
}
else {
me.stopAutoScroll();
}
}, interval);
}
}
else {
this.stopAutoScroll();
}
};
/**
* Stop auto scrolling. Only applicable when scrolling
*/
TreeEditor.prototype.stopAutoScroll = function () {
if (this.autoScrollTimer) {
clearTimeout(this.autoScrollTimer);
delete this.autoScrollTimer;
}
if (this.autoScrollStep) {
delete this.autoScrollStep;
}
};
/**
* Set the focus to an element in the TreeEditor, set text selection, and
* set scroll position.
* @param {Object} selection An object containing fields:
* {Element | undefined} dom The dom element
* which has focus
* {Range | TextRange} range A text selection
* {Number} scrollTop Scroll position
*/
TreeEditor.prototype.setSelection = function (selection) {
if (!selection) {
return;
}
if ('scrollTop' in selection && this.content) {
// TODO: animated scroll
this.content.scrollTop = selection.scrollTop;
}
if (selection.range) {
util.setSelectionOffset(selection.range);
}
if (selection.dom) {
selection.dom.focus();
}
};
/**
* Get the current focus
* @return {Object} selection An object containing fields:
* {Element | undefined} dom The dom element
* which has focus
* {Range | TextRange} range A text selection
* {Number} scrollTop Scroll position
*/
TreeEditor.prototype.getSelection = function () {
return {
dom: TreeEditor.domFocus,
scrollTop: this.content ? this.content.scrollTop : 0,
range: util.getSelectionOffset()
};
};
/**
* Adjust the scroll position such that given top position is shown at 1/4
* of the window height.
* @param {Number} top
* @param {function(boolean)} [callback] Callback, executed when animation is
* finished. The callback returns true
* when animation is finished, or false
* when not.
*/
TreeEditor.prototype.scrollTo = function (top, callback) {
var content = this.content;
if (content) {
var editor = this;
// cancel any running animation
if (editor.animateTimeout) {
clearTimeout(editor.animateTimeout);
delete editor.animateTimeout;
}
if (editor.animateCallback) {
editor.animateCallback(false);
delete editor.animateCallback;
}
// calculate final scroll position
var height = content.clientHeight;
var bottom = content.scrollHeight - height;
var finalScrollTop = Math.min(Math.max(top - height / 4, 0), bottom);
// animate towards the new scroll position
var animate = function () {
var scrollTop = content.scrollTop;
var diff = (finalScrollTop - scrollTop);
if (Math.abs(diff) > 3) {
content.scrollTop += diff / 3;
editor.animateCallback = callback;
editor.animateTimeout = setTimeout(animate, 50);
}
else {
// finished
if (callback) {
callback(true);
}
content.scrollTop = finalScrollTop;
delete editor.animateTimeout;
delete editor.animateCallback;
}
};
animate();
}
else {
if (callback) {
callback(false);
}
}
};
/**
* Create main frame
* @private
*/
TreeEditor.prototype._createFrame = function () {
// create the frame
this.frame = document.createElement('div');
this.frame.className = 'jsoneditor';
this.container.appendChild(this.frame);
// create one global event listener to handle all events from all nodes
var editor = this;
var onEvent = function (event) {
editor._onEvent(event);
};
this.frame.onclick = function (event) {
var target = event.target;// || event.srcElement;
onEvent(event);
// prevent default submit action of buttons when TreeEditor is located
// inside a form
if (target.nodeName == 'BUTTON') {
event.preventDefault();
}
};
this.frame.oninput = onEvent;
this.frame.onchange = onEvent;
this.frame.onkeydown = onEvent;
this.frame.onkeyup = onEvent;
this.frame.oncut = onEvent;
this.frame.onpaste = onEvent;
this.frame.onmousedown = onEvent;
this.frame.onmouseup = onEvent;
this.frame.onmouseover = onEvent;
this.frame.onmouseout = onEvent;
// Note: focus and blur events do not propagate, therefore they defined
// using an eventListener with useCapture=true
// see http://www.quirksmode.org/blog/archives/2008/04/delegating_the.html
util.addEventListener(this.frame, 'focus', onEvent, true);
util.addEventListener(this.frame, 'blur', onEvent, true);
this.frame.onfocusin = onEvent; // for IE
this.frame.onfocusout = onEvent; // for IE
// create menu
this.menu = document.createElement('div');
this.menu.className = 'menu';
this.frame.appendChild(this.menu);
// create expand all button
var expandAll = document.createElement('button');
expandAll.className = 'expand-all';
expandAll.title = 'Expand all fields';
expandAll.onclick = function () {
editor.expandAll();
};
this.menu.appendChild(expandAll);
// create expand all button
var collapseAll = document.createElement('button');
collapseAll.title = 'Collapse all fields';
collapseAll.className = 'collapse-all';
collapseAll.onclick = function () {
editor.collapseAll();
};
this.menu.appendChild(collapseAll);
// create undo/redo buttons
if (this.history) {
// create undo button
var undo = document.createElement('button');
undo.className = 'undo separator';
undo.title = 'Undo last action (Ctrl+Z)';
undo.onclick = function () {
editor._onUndo();
};
this.menu.appendChild(undo);
this.dom.undo = undo;
// create redo button
var redo = document.createElement('button');
redo.className = 'redo';
redo.title = 'Redo (Ctrl+Shift+Z)';
redo.onclick = function () {
editor._onRedo();
};
this.menu.appendChild(redo);
this.dom.redo = redo;
// register handler for onchange of history
this.history.onChange = function () {
undo.disabled = !editor.history.canUndo();
redo.disabled = !editor.history.canRedo();
};
this.history.onChange();
}
// create mode box
if (this.options && this.options.modes && this.options.modes.length) {
var modeBox = createModeBox(this, this.options.modes, this.options.mode);
this.menu.appendChild(modeBox);
this.dom.modeBox = modeBox;
}
// create search box
if (this.options.search) {
this.searchBox = new SearchBox(this, this.menu);
}
};
/**
* Perform an undo action
* @private
*/
TreeEditor.prototype._onUndo = function () {
if (this.history) {
// undo last action
this.history.undo();
// trigger change callback
if (this.options.change) {
this.options.change();
}
}
};
/**
* Perform a redo action
* @private
*/
TreeEditor.prototype._onRedo = function () {
if (this.history) {
// redo last action
this.history.redo();
// trigger change callback
if (this.options.change) {
this.options.change();
}
}
};
/**
* Event handler
* @param event
* @private
*/
TreeEditor.prototype._onEvent = function (event) {
var target = event.target;
if (event.type == 'keydown') {
this._onKeyDown(event);
}
if (event.type == 'focus') {
TreeEditor.domFocus = target;
}
var node = Node.getNodeFromTarget(target);
if (node) {
node.onEvent(event);
}
};
/**
* Event handler for keydown. Handles shortcut keys
* @param {Event} event
* @private
*/
TreeEditor.prototype._onKeyDown = function (event) {
var keynum = event.which || event.keyCode;
var ctrlKey = event.ctrlKey;
var shiftKey = event.shiftKey;
var handled = false;
if (keynum == 9) { // Tab or Shift+Tab
setTimeout(function () {
// select all text when moving focus to an editable div
util.selectContentEditable(TreeEditor.domFocus);
}, 0);
}
if (this.searchBox) {
if (ctrlKey && keynum == 70) { // Ctrl+F
this.searchBox.dom.search.focus();
this.searchBox.dom.search.select();
handled = true;
}
else if (keynum == 114 || (ctrlKey && keynum == 71)) { // F3 or Ctrl+G
var focus = true;
if (!shiftKey) {
// select next search result (F3 or Ctrl+G)
this.searchBox.next(focus);
}
else {
// select previous search result (Shift+F3 or Ctrl+Shift+G)
this.searchBox.previous(focus);
}
handled = true;
}
}
if (this.history) {
if (ctrlKey && !shiftKey && keynum == 90) { // Ctrl+Z
// undo
this._onUndo();
handled = true;
}
else if (ctrlKey && shiftKey && keynum == 90) { // Ctrl+Shift+Z
// redo
this._onRedo();
handled = true;
}
}
if (handled) {
event.preventDefault();
event.stopPropagation();
}
};
/**
* Create main table
* @private
*/
TreeEditor.prototype._createTable = function () {
var contentOuter = document.createElement('div');
contentOuter.className = 'outer';
this.contentOuter = contentOuter;
this.content = document.createElement('div');
this.content.className = 'tree';
contentOuter.appendChild(this.content);
this.table = document.createElement('table');
this.table.className = 'tree';
this.content.appendChild(this.table);
// create colgroup where the first two columns don't have a fixed
// width, and the edit columns do have a fixed width
var col;
this.colgroupContent = document.createElement('colgroup');
if (this.mode.edit) {
col = document.createElement('col');
col.width = "24px";
this.colgroupContent.appendChild(col);
}
col = document.createElement('col');
col.width = "24px";
this.colgroupContent.appendChild(col);
col = document.createElement('col');
this.colgroupContent.appendChild(col);
this.table.appendChild(this.colgroupContent);
this.tbody = document.createElement('tbody');
this.table.appendChild(this.tbody);
this.frame.appendChild(contentOuter);
};
// register modes at the JSONEditor
JSONEditor.modes.tree = {
editor: TreeEditor,
data: 'json'
};
JSONEditor.modes.view = {
editor: TreeEditor,
data: 'json'
};
JSONEditor.modes.form = {
editor: TreeEditor,
data: 'json'
};
// Deprecated modes (deprecated since version 2.2.0)
JSONEditor.modes.editor = {
editor: TreeEditor,
data: 'json'
};
JSONEditor.modes.viewer = {
editor: TreeEditor,
data: 'json'
};
/**
* Create a TextEditor and attach it to given container
* @constructor TextEditor
* @param {Element} container
* @param {Object} [options] Object with options. available options:
* {String} mode Available values:
* "text" (default)
* or "code".
* {Number} indentation Number of indentation
* spaces. 4 by default.
* {function} change Callback method
* triggered on change
* @param {JSON | String} [json] initial contents of the formatter
*/
function TextEditor(container, options, json) {
if (!(this instanceof TextEditor)) {
throw new Error('TextEditor constructor called without "new".');
}
this._create(container, options, json);
}
/**
* Create a TextEditor and attach it to given container
* @constructor TextEditor
* @param {Element} container
* @param {Object} [options] See description in constructor
* @param {JSON | String} [json] initial contents of the formatter
* @private
*/
TextEditor.prototype._create = function (container, options, json) {
// read options
options = options || {};
this.options = options;
if (options.indentation) {
this.indentation = Number(options.indentation);
}
else {
this.indentation = 2; // number of spaces
}
this.mode = (options.mode == 'code') ? 'code' : 'text';
if (this.mode == 'code') {
// verify whether Ace editor is available and supported
if (typeof ace === 'undefined') {
this.mode = 'text';
util.log('WARNING: Cannot load code editor, Ace library not loaded. ' +
'Falling back to plain text editor');
}
}
var me = this;
this.container = container;
this.dom = {};
this.editor = undefined; // ace code editor
this.textarea = undefined; // plain text editor (fallback when Ace is not available)
this.width = container.clientWidth;
this.height = container.clientHeight;
this.frame = document.createElement('div');
this.frame.className = 'jsoneditor';
this.frame.onclick = function (event) {
// prevent default submit action when TextEditor is located inside a form
event.preventDefault();
};
// create menu
this.menu = document.createElement('div');
this.menu.className = 'menu';
this.frame.appendChild(this.menu);
// create format button
var buttonFormat = document.createElement('button');
buttonFormat.className = 'format';
buttonFormat.title = 'Format JSON data, with proper indentation and line feeds';
this.menu.appendChild(buttonFormat);
buttonFormat.onclick = function () {
try {
me.format();
}
catch (err) {
me._onError(err);
}
};
// create compact button
var buttonCompact = document.createElement('button');
buttonCompact.className = 'compact';
buttonCompact.title = 'Compact JSON data, remove all whitespaces';
this.menu.appendChild(buttonCompact);
buttonCompact.onclick = function () {
try {
me.compact();
}
catch (err) {
me._onError(err);
}
};
// create mode box
if (this.options && this.options.modes && this.options.modes.length) {
var modeBox = createModeBox(this, this.options.modes, this.options.mode);
this.menu.appendChild(modeBox);
this.dom.modeBox = modeBox;
}
this.content = document.createElement('div');
this.content.className = 'outer';
this.frame.appendChild(this.content);
this.container.appendChild(this.frame);
if (this.mode == 'code') {
this.editorDom = document.createElement('div');
this.editorDom.style.height = '100%'; // TODO: move to css
this.editorDom.style.width = '100%'; // TODO: move to css
this.content.appendChild(this.editorDom);
var editor = ace.edit(this.editorDom);
editor.setTheme('ace/theme/jsoneditor');
editor.setShowPrintMargin(false);
editor.setFontSize(13);
editor.getSession().setMode('ace/mode/json');
editor.getSession().setUseSoftTabs(true);
editor.getSession().setUseWrapMode(true);
this.editor = editor;
var poweredBy = document.createElement('a');
poweredBy.appendChild(document.createTextNode('powered by ace'));
poweredBy.href = 'http://ace.ajax.org';
poweredBy.target = '_blank';
poweredBy.className = 'poweredBy';
poweredBy.onclick = function () {
// TODO: this anchor falls below the margin of the content,
// therefore the normal a.href does not work. We use a click event
// for now, but this should be fixed.
window.open(poweredBy.href, poweredBy.target);
};
this.menu.appendChild(poweredBy);
if (options.change) {
// register onchange event
editor.on('change', function () {
options.change();
});
}
}
else {
// load a plain text textarea
var textarea = document.createElement('textarea');
textarea.className = 'text';
textarea.spellcheck = false;
this.content.appendChild(textarea);
this.textarea = textarea;
if (options.change) {
// register onchange event
if (this.textarea.oninput === null) {
this.textarea.oninput = function () {
options.change();
}
}
else {
// oninput is undefined. For IE8-
this.textarea.onchange = function () {
options.change();
}
}
}
}
// load initial json object or string
if (typeof(json) == 'string') {
this.setText(json);
}
else {
this.set(json);
}
};
/**
* Detach the editor from the DOM
* @private
*/
TextEditor.prototype._delete = function () {
if (this.frame && this.container && this.frame.parentNode == this.container) {
this.container.removeChild(this.frame);
}
};
/**
* Throw an error. If an error callback is configured in options.error, this
* callback will be invoked. Else, a regular error is thrown.
* @param {Error} err
* @private
*/
TextEditor.prototype._onError = function(err) {
// TODO: onError is deprecated since version 2.2.0. cleanup some day
if (typeof this.onError === 'function') {
util.log('WARNING: JSONEditor.onError is deprecated. ' +
'Use options.error instead.');
this.onError(err);
}
if (this.options && typeof this.options.error === 'function') {
this.options.error(err);
}
else {
throw err;
}
};
/**
* Compact the code in the formatter
*/
TextEditor.prototype.compact = function () {
var json = util.parse(this.getText());
this.setText(JSON.stringify(json));
};
/**
* Format the code in the formatter
*/
TextEditor.prototype.format = function () {
var json = util.parse(this.getText());
this.setText(JSON.stringify(json, null, this.indentation));
};
/**
* Set focus to the formatter
*/
TextEditor.prototype.focus = function () {
if (this.textarea) {
this.textarea.focus();
}
if (this.editor) {
this.editor.focus();
}
};
/**
* Resize the formatter
*/
TextEditor.prototype.resize = function () {
if (this.editor) {
var force = false;
this.editor.resize(force);
}
};
/**
* Set json data in the formatter
* @param {Object} json
*/
TextEditor.prototype.set = function(json) {
this.setText(JSON.stringify(json, null, this.indentation));
};
/**
* Get json data from the formatter
* @return {Object} json
*/
TextEditor.prototype.get = function() {
return util.parse(this.getText());
};
/**
* Get the text contents of the TextEditor
* @return {String} jsonText
*/
TextEditor.prototype.getText = function() {
if (this.textarea) {
return this.textarea.value;
}
if (this.editor) {
return this.editor.getValue();
}
return '';
};
/**
* Set the text contents of the TextEditor
* @param {String} jsonText
*/
TextEditor.prototype.setText = function(jsonText) {
if (this.textarea) {
this.textarea.value = jsonText;
}
if (this.editor) {
this.editor.setValue(jsonText, -1);
}
};
// register modes at the JSONEditor
JSONEditor.modes.text = {
editor: TextEditor,
data: 'text',
load: TextEditor.prototype.format
};
JSONEditor.modes.code = {
editor: TextEditor,
data: 'text',
load: TextEditor.prototype.format
};
/**
* @constructor Node
* Create a new Node
* @param {TreeEditor} editor
* @param {Object} [params] Can contain parameters:
* {string} field
* {boolean} fieldEditable
* {*} value
* {String} type Can have values 'auto', 'array',
* 'object', or 'string'.
*/
function Node (editor, params) {
/** @type {TreeEditor} */
this.editor = editor;
this.dom = {};
this.expanded = false;
if(params && (params instanceof Object)) {
this.setField(params.field, params.fieldEditable);
this.setValue(params.value, params.type);
}
else {
this.setField('');
this.setValue(null);
}
};
/**
* Set parent node
* @param {Node} parent
*/
Node.prototype.setParent = function(parent) {
this.parent = parent;
};
/**
* Set field
* @param {String} field
* @param {boolean} [fieldEditable]
*/
Node.prototype.setField = function(field, fieldEditable) {
this.field = field;
this.fieldEditable = (fieldEditable == true);
};
/**
* Get field
* @return {String}
*/
Node.prototype.getField = function() {
if (this.field === undefined) {
this._getDomField();
}
return this.field;
};
/**
* Set value. Value is a JSON structure or an element String, Boolean, etc.
* @param {*} value
* @param {String} [type] Specify the type of the value. Can be 'auto',
* 'array', 'object', or 'string'
*/
Node.prototype.setValue = function(value, type) {
var childValue, child;
// first clear all current childs (if any)
var childs = this.childs;
if (childs) {
while (childs.length) {
this.removeChild(childs[0]);
}
}
// TODO: remove the DOM of this Node
this.type = this._getType(value);
// check if type corresponds with the provided type
if (type && type != this.type) {
if (type == 'string' && this.type == 'auto') {
this.type = type;
}
else {
throw new Error('Type mismatch: ' +
'cannot cast value of type "' + this.type +
' to the specified type "' + type + '"');
}
}
if (this.type == 'array') {
// array
this.childs = [];
for (var i = 0, iMax = value.length; i < iMax; i++) {
childValue = value[i];
if (childValue !== undefined && !(childValue instanceof Function)) {
// ignore undefined and functions
child = new Node(this.editor, {
'value': childValue
});
this.appendChild(child);
}
}
this.value = '';
}
else if (this.type == 'object') {
// object
this.childs = [];
for (var childField in value) {
if (value.hasOwnProperty(childField)) {
childValue = value[childField];
if (childValue !== undefined && !(childValue instanceof Function)) {
// ignore undefined and functions
child = new Node(this.editor, {
'field': childField,
'value': childValue
});
this.appendChild(child);
}
}
}
this.value = '';
}
else {
// value
this.childs = undefined;
this.value = value;
/* TODO
if (typeof(value) == 'string') {
var escValue = JSON.stringify(value);
this.value = escValue.substring(1, escValue.length - 1);
util.log('check', value, this.value);
}
else {
this.value = value;
}
*/
}
};
/**
* Get value. Value is a JSON structure
* @return {*} value
*/
Node.prototype.getValue = function() {
//var childs, i, iMax;
if (this.type == 'array') {
var arr = [];
this.childs.forEach (function (child) {
arr.push(child.getValue());
});
return arr;
}
else if (this.type == 'object') {
var obj = {};
this.childs.forEach (function (child) {
obj[child.getField()] = child.getValue();
});
return obj;
}
else {
if (this.value === undefined) {
this._getDomValue();
}
return this.value;
}
};
/**
* Get the nesting level of this node
* @return {Number} level
*/
Node.prototype.getLevel = function() {
return (this.parent ? this.parent.getLevel() + 1 : 0);
};
/**
* Create a clone of a node
* The complete state of a clone is copied, including whether it is expanded or
* not. The DOM elements are not cloned.
* @return {Node} clone
*/
Node.prototype.clone = function() {
var clone = new Node(this.editor);
clone.type = this.type;
clone.field = this.field;
clone.fieldInnerText = this.fieldInnerText;
clone.fieldEditable = this.fieldEditable;
clone.value = this.value;
clone.valueInnerText = this.valueInnerText;
clone.expanded = this.expanded;
if (this.childs) {
// an object or array
var cloneChilds = [];
this.childs.forEach(function (child) {
var childClone = child.clone();
childClone.setParent(clone);
cloneChilds.push(childClone);
});
clone.childs = cloneChilds;
}
else {
// a value
clone.childs = undefined;
}
return clone;
};
/**
* Expand this node and optionally its childs.
* @param {boolean} [recurse] Optional recursion, true by default. When
* true, all childs will be expanded recursively
*/
Node.prototype.expand = function(recurse) {
if (!this.childs) {
return;
}
// set this node expanded
this.expanded = true;
if (this.dom.expand) {
this.dom.expand.className = 'expanded';
}
this.showChilds();
if (recurse != false) {
this.childs.forEach(function (child) {
child.expand(recurse);
});
}
};
/**
* Collapse this node and optionally its childs.
* @param {boolean} [recurse] Optional recursion, true by default. When
* true, all childs will be collapsed recursively
*/
Node.prototype.collapse = function(recurse) {
if (!this.childs) {
return;
}
this.hideChilds();
// collapse childs in case of recurse
if (recurse != false) {
this.childs.forEach(function (child) {
child.collapse(recurse);
});
}
// make this node collapsed
if (this.dom.expand) {
this.dom.expand.className = 'collapsed';
}
this.expanded = false;
};
/**
* Recursively show all childs when they are expanded
*/
Node.prototype.showChilds = function() {
var childs = this.childs;
if (!childs) {
return;
}
if (!this.expanded) {
return;
}
var tr = this.dom.tr;
var table = tr ? tr.parentNode : undefined;
if (table) {
// show row with append button
var append = this.getAppend();
var nextTr = tr.nextSibling;
if (nextTr) {
table.insertBefore(append, nextTr);
}
else {
table.appendChild(append);
}
// show childs
this.childs.forEach(function (child) {
table.insertBefore(child.getDom(), append);
child.showChilds();
});
}
};
/**
* Hide the node with all its childs
*/
Node.prototype.hide = function() {
var tr = this.dom.tr;
var table = tr ? tr.parentNode : undefined;
if (table) {
table.removeChild(tr);
}
this.hideChilds();
};
/**
* Recursively hide all childs
*/
Node.prototype.hideChilds = function() {
var childs = this.childs;
if (!childs) {
return;
}
if (!this.expanded) {
return;
}
// hide append row
var append = this.getAppend();
if (append.parentNode) {
append.parentNode.removeChild(append);
}
// hide childs
this.childs.forEach(function (child) {
child.hide();
});
};
/**
* Add a new child to the node.
* Only applicable when Node value is of type array or object
* @param {Node} node
*/
Node.prototype.appendChild = function(node) {
if (this._hasChilds()) {
// adjust the link to the parent
node.setParent(this);
node.fieldEditable = (this.type == 'object');
if (this.type == 'array') {
node.index = this.childs.length;
}
this.childs.push(node);
if (this.expanded) {
// insert into the DOM, before the appendRow
var newTr = node.getDom();
var appendTr = this.getAppend();
var table = appendTr ? appendTr.parentNode : undefined;
if (appendTr && table) {
table.insertBefore(newTr, appendTr);
}
node.showChilds();
}
this.updateDom({'updateIndexes': true});
node.updateDom({'recurse': true});
}
};
/**
* Move a node from its current parent to this node
* Only applicable when Node value is of type array or object
* @param {Node} node
* @param {Node} beforeNode
*/
Node.prototype.moveBefore = function(node, beforeNode) {
if (this._hasChilds()) {
// create a temporary row, to prevent the scroll position from jumping
// when removing the node
var tbody = (this.dom.tr) ? this.dom.tr.parentNode : undefined;
if (tbody) {
var trTemp = document.createElement('tr');
trTemp.style.height = tbody.clientHeight + 'px';
tbody.appendChild(trTemp);
}
if (node.parent) {
node.parent.removeChild(node);
}
if (beforeNode instanceof AppendNode) {
this.appendChild(node);
}
else {
this.insertBefore(node, beforeNode);
}
if (tbody) {
tbody.removeChild(trTemp);
}
}
};
/**
* Move a node from its current parent to this node
* Only applicable when Node value is of type array or object.
* If index is out of range, the node will be appended to the end
* @param {Node} node
* @param {Number} index
*/
Node.prototype.moveTo = function (node, index) {
if (node.parent == this) {
// same parent
var currentIndex = this.childs.indexOf(node);
if (currentIndex < index) {
// compensate the index for removal of the node itself
index++;
}
}
var beforeNode = this.childs[index] || this.append;
this.moveBefore(node, beforeNode);
};
/**
* Insert a new child before a given node
* Only applicable when Node value is of type array or object
* @param {Node} node
* @param {Node} beforeNode
*/
Node.prototype.insertBefore = function(node, beforeNode) {
if (this._hasChilds()) {
if (beforeNode == this.append) {
// append to the child nodes
// adjust the link to the parent
node.setParent(this);
node.fieldEditable = (this.type == 'object');
this.childs.push(node);
}
else {
// insert before a child node
var index = this.childs.indexOf(beforeNode);
if (index == -1) {
throw new Error('Node not found');
}
// adjust the link to the parent
node.setParent(this);
node.fieldEditable = (this.type == 'object');
this.childs.splice(index, 0, node);
}
if (this.expanded) {
// insert into the DOM
var newTr = node.getDom();
var nextTr = beforeNode.getDom();
var table = nextTr ? nextTr.parentNode : undefined;
if (nextTr && table) {
table.insertBefore(newTr, nextTr);
}
node.showChilds();
}
this.updateDom({'updateIndexes': true});
node.updateDom({'recurse': true});
}
};
/**
* Insert a new child before a given node
* Only applicable when Node value is of type array or object
* @param {Node} node
* @param {Node} afterNode
*/
Node.prototype.insertAfter = function(node, afterNode) {
if (this._hasChilds()) {
var index = this.childs.indexOf(afterNode);
var beforeNode = this.childs[index + 1];
if (beforeNode) {
this.insertBefore(node, beforeNode);
}
else {
this.appendChild(node);
}
}
};
/**
* Search in this node
* The node will be expanded when the text is found one of its childs, else
* it will be collapsed. Searches are case insensitive.
* @param {String} text
* @return {Node[]} results Array with nodes containing the search text
*/
Node.prototype.search = function(text) {
var results = [];
var index;
var search = text ? text.toLowerCase() : undefined;
// delete old search data
delete this.searchField;
delete this.searchValue;
// search in field
if (this.field != undefined) {
var field = String(this.field).toLowerCase();
index = field.indexOf(search);
if (index != -1) {
this.searchField = true;
results.push({
'node': this,
'elem': 'field'
});
}
// update dom
this._updateDomField();
}
// search in value
if (this._hasChilds()) {
// array, object
// search the nodes childs
if (this.childs) {
var childResults = [];
this.childs.forEach(function (child) {
childResults = childResults.concat(child.search(text));
});
results = results.concat(childResults);
}
// update dom
if (search != undefined) {
var recurse = false;
if (childResults.length == 0) {
this.collapse(recurse);
}
else {
this.expand(recurse);
}
}
}
else {
// string, auto
if (this.value != undefined ) {
var value = String(this.value).toLowerCase();
index = value.indexOf(search);
if (index != -1) {
this.searchValue = true;
results.push({
'node': this,
'elem': 'value'
});
}
}
// update dom
this._updateDomValue();
}
return results;
};
/**
* Move the scroll position such that this node is in the visible area.
* The node will not get the focus
* @param {function(boolean)} [callback]
*/
Node.prototype.scrollTo = function(callback) {
if (!this.dom.tr || !this.dom.tr.parentNode) {
// if the node is not visible, expand its parents
var parent = this.parent;
var recurse = false;
while (parent) {
parent.expand(recurse);
parent = parent.parent;
}
}
if (this.dom.tr && this.dom.tr.parentNode) {
this.editor.scrollTo(this.dom.tr.offsetTop, callback);
}
};
// stores the element name currently having the focus
Node.focusElement = undefined;
/**
* Set focus to this node
* @param {String} [elementName] The field name of the element to get the
* focus available values: 'drag', 'menu',
* 'expand', 'field', 'value' (default)
*/
Node.prototype.focus = function(elementName) {
Node.focusElement = elementName;
if (this.dom.tr && this.dom.tr.parentNode) {
var dom = this.dom;
switch (elementName) {
case 'drag':
if (dom.drag) {
dom.drag.focus();
}
else {
dom.menu.focus();
}
break;
case 'menu':
dom.menu.focus();
break;
case 'expand':
if (this._hasChilds()) {
dom.expand.focus();
}
else if (dom.field && this.fieldEditable) {
dom.field.focus();
util.selectContentEditable(dom.field);
}
else if (dom.value && !this._hasChilds()) {
dom.value.focus();
util.selectContentEditable(dom.value);
}
else {
dom.menu.focus();
}
break;
case 'field':
if (dom.field && this.fieldEditable) {
dom.field.focus();
util.selectContentEditable(dom.field);
}
else if (dom.value && !this._hasChilds()) {
dom.value.focus();
util.selectContentEditable(dom.value);
}
else if (this._hasChilds()) {
dom.expand.focus();
}
else {
dom.menu.focus();
}
break;
case 'value':
default:
if (dom.value && !this._hasChilds()) {
dom.value.focus();
util.selectContentEditable(dom.value);
}
else if (dom.field && this.fieldEditable) {
dom.field.focus();
util.selectContentEditable(dom.field);
}
else if (this._hasChilds()) {
dom.expand.focus();
}
else {
dom.menu.focus();
}
break;
}
}
};
/**
* Select all text in an editable div after a delay of 0 ms
* @param {Element} editableDiv
*/
Node.select = function(editableDiv) {
setTimeout(function () {
util.selectContentEditable(editableDiv);
}, 0);
};
/**
* Update the values from the DOM field and value of this node
*/
Node.prototype.blur = function() {
// retrieve the actual field and value from the DOM.
this._getDomValue(false);
this._getDomField(false);
};
/**
* Duplicate given child node
* new structure will be added right before the cloned node
* @param {Node} node the childNode to be duplicated
* @return {Node} clone the clone of the node
* @private
*/
Node.prototype._duplicate = function(node) {
var clone = node.clone();
/* TODO: adjust the field name (to prevent equal field names)
if (this.type == 'object') {
}
*/
this.insertAfter(clone, node);
return clone;
};
/**
* Check if given node is a child. The method will check recursively to find
* this node.
* @param {Node} node
* @return {boolean} containsNode
*/
Node.prototype.containsNode = function(node) {
if (this == node) {
return true;
}
var childs = this.childs;
if (childs) {
// TODO: use the js5 Array.some() here?
for (var i = 0, iMax = childs.length; i < iMax; i++) {
if (childs[i].containsNode(node)) {
return true;
}
}
}
return false;
};
/**
* Move given node into this node
* @param {Node} node the childNode to be moved
* @param {Node} beforeNode node will be inserted before given
* node. If no beforeNode is given,
* the node is appended at the end
* @private
*/
Node.prototype._move = function(node, beforeNode) {
if (node == beforeNode) {
// nothing to do...
return;
}
// check if this node is not a child of the node to be moved here
if (node.containsNode(this)) {
throw new Error('Cannot move a field into a child of itself');
}
// remove the original node
if (node.parent) {
node.parent.removeChild(node);
}
// create a clone of the node
var clone = node.clone();
node.clearDom();
// insert or append the node
if (beforeNode) {
this.insertBefore(clone, beforeNode);
}
else {
this.appendChild(clone);
}
/* TODO: adjust the field name (to prevent equal field names)
if (this.type == 'object') {
}
*/
};
/**
* Remove a child from the node.
* Only applicable when Node value is of type array or object
* @param {Node} node The child node to be removed;
* @return {Node | undefined} node The removed node on success,
* else undefined
*/
Node.prototype.removeChild = function(node) {
if (this.childs) {
var index = this.childs.indexOf(node);
if (index != -1) {
node.hide();
// delete old search results
delete node.searchField;
delete node.searchValue;
var removedNode = this.childs.splice(index, 1)[0];
this.updateDom({'updateIndexes': true});
return removedNode;
}
}
return undefined;
};
/**
* Remove a child node node from this node
* This method is equal to Node.removeChild, except that _remove firex an
* onChange event.
* @param {Node} node
* @private
*/
Node.prototype._remove = function (node) {
this.removeChild(node);
};
/**
* Change the type of the value of this Node
* @param {String} newType
*/
Node.prototype.changeType = function (newType) {
var oldType = this.type;
if (oldType == newType) {
// type is not changed
return;
}
if ((newType == 'string' || newType == 'auto') &&
(oldType == 'string' || oldType == 'auto')) {
// this is an easy change
this.type = newType;
}
else {
// change from array to object, or from string/auto to object/array
var table = this.dom.tr ? this.dom.tr.parentNode : undefined;
var lastTr;
if (this.expanded) {
lastTr = this.getAppend();
}
else {
lastTr = this.getDom();
}
var nextTr = (lastTr && lastTr.parentNode) ? lastTr.nextSibling : undefined;
// hide current field and all its childs
this.hide();
this.clearDom();
// adjust the field and the value
this.type = newType;
// adjust childs
if (newType == 'object') {
if (!this.childs) {
this.childs = [];
}
this.childs.forEach(function (child, index) {
child.clearDom();
delete child.index;
child.fieldEditable = true;
if (child.field == undefined) {
child.field = '';
}
});
if (oldType == 'string' || oldType == 'auto') {
this.expanded = true;
}
}
else if (newType == 'array') {
if (!this.childs) {
this.childs = [];
}
this.childs.forEach(function (child, index) {
child.clearDom();
child.fieldEditable = false;
child.index = index;
});
if (oldType == 'string' || oldType == 'auto') {
this.expanded = true;
}
}
else {
this.expanded = false;
}
// create new DOM
if (table) {
if (nextTr) {
table.insertBefore(this.getDom(), nextTr);
}
else {
table.appendChild(this.getDom());
}
}
this.showChilds();
}
if (newType == 'auto' || newType == 'string') {
// cast value to the correct type
if (newType == 'string') {
this.value = String(this.value);
}
else {
this.value = this._stringCast(String(this.value));
}
this.focus();
}
this.updateDom({'updateIndexes': true});
};
/**
* Retrieve value from DOM
* @param {boolean} [silent] If true (default), no errors will be thrown in
* case of invalid data
* @private
*/
Node.prototype._getDomValue = function(silent) {
if (this.dom.value && this.type != 'array' && this.type != 'object') {
this.valueInnerText = util.getInnerText(this.dom.value);
}
if (this.valueInnerText != undefined) {
try {
// retrieve the value
var value;
if (this.type == 'string') {
value = this._unescapeHTML(this.valueInnerText);
}
else {
var str = this._unescapeHTML(this.valueInnerText);
value = this._stringCast(str);
}
if (value !== this.value) {
var oldValue = this.value;
this.value = value;
this.editor._onAction('editValue', {
'node': this,
'oldValue': oldValue,
'newValue': value,
'oldSelection': this.editor.selection,
'newSelection': this.editor.getSelection()
});
}
}
catch (err) {
this.value = undefined;
// TODO: sent an action with the new, invalid value?
if (silent != true) {
throw err;
}
}
}
};
/**
* Update dom value:
* - the text color of the value, depending on the type of the value
* - the height of the field, depending on the width
* - background color in case it is empty
* @private
*/
Node.prototype._updateDomValue = function () {
var domValue = this.dom.value;
if (domValue) {
// set text color depending on value type
// TODO: put colors in css
var v = this.value;
var t = (this.type == 'auto') ? util.type(v) : this.type;
var isUrl = (t == 'string' && util.isUrl(v));
var color = '';
if (isUrl && !this.editor.mode.edit) {
color = '';
}
else if (t == 'string') {
color = 'green';
}
else if (t == 'number') {
color = 'red';
}
else if (t == 'boolean') {
color = 'darkorange';
}
else if (this._hasChilds()) {
color = '';
}
else if (v === null) {
color = '#004ED0'; // blue
}
else {
// invalid value
color = 'black';
}
domValue.style.color = color;
// make background color light-gray when empty
var isEmpty = (String(this.value) == '' && this.type != 'array' && this.type != 'object');
if (isEmpty) {
util.addClassName(domValue, 'empty');
}
else {
util.removeClassName(domValue, 'empty');
}
// underline url
if (isUrl) {
util.addClassName(domValue, 'url');
}
else {
util.removeClassName(domValue, 'url');
}
// update title
if (t == 'array' || t == 'object') {
var count = this.childs ? this.childs.length : 0;
domValue.title = this.type + ' containing ' + count + ' items';
}
else if (t == 'string' && util.isUrl(v)) {
if (this.editor.mode.edit) {
domValue.title = 'Ctrl+Click or Ctrl+Enter to open url in new window';
}
}
else {
domValue.title = '';
}
// highlight when there is a search result
if (this.searchValueActive) {
util.addClassName(domValue, 'highlight-active');
}
else {
util.removeClassName(domValue, 'highlight-active');
}
if (this.searchValue) {
util.addClassName(domValue, 'highlight');
}
else {
util.removeClassName(domValue, 'highlight');
}
// strip formatting from the contents of the editable div
util.stripFormatting(domValue);
}
};
/**
* Update dom field:
* - the text color of the field, depending on the text
* - the height of the field, depending on the width
* - background color in case it is empty
* @private
*/
Node.prototype._updateDomField = function () {
var domField = this.dom.field;
if (domField) {
// make backgound color lightgray when empty
var isEmpty = (String(this.field) == '' && this.parent.type != 'array');
if (isEmpty) {
util.addClassName(domField, 'empty');
}
else {
util.removeClassName(domField, 'empty');
}
// highlight when there is a search result
if (this.searchFieldActive) {
util.addClassName(domField, 'highlight-active');
}
else {
util.removeClassName(domField, 'highlight-active');
}
if (this.searchField) {
util.addClassName(domField, 'highlight');
}
else {
util.removeClassName(domField, 'highlight');
}
// strip formatting from the contents of the editable div
util.stripFormatting(domField);
}
};
/**
* Retrieve field from DOM
* @param {boolean} [silent] If true (default), no errors will be thrown in
* case of invalid data
* @private
*/
Node.prototype._getDomField = function(silent) {
if (this.dom.field && this.fieldEditable) {
this.fieldInnerText = util.getInnerText(this.dom.field);
}
if (this.fieldInnerText != undefined) {
try {
var field = this._unescapeHTML(this.fieldInnerText);
if (field !== this.field) {
var oldField = this.field;
this.field = field;
this.editor._onAction('editField', {
'node': this,
'oldValue': oldField,
'newValue': field,
'oldSelection': this.editor.selection,
'newSelection': this.editor.getSelection()
});
}
}
catch (err) {
this.field = undefined;
// TODO: sent an action here, with the new, invalid value?
if (silent != true) {
throw err;
}
}
}
};
/**
* Clear the dom of the node
*/
Node.prototype.clearDom = function() {
// TODO: hide the node first?
//this.hide();
// TODO: recursively clear dom?
this.dom = {};
};
/**
* Get the HTML DOM TR element of the node.
* The dom will be generated when not yet created
* @return {Element} tr HTML DOM TR Element
*/
Node.prototype.getDom = function() {
var dom = this.dom;
if (dom.tr) {
return dom.tr;
}
// create row
dom.tr = document.createElement('tr');
dom.tr.node = this;
if (this.editor.mode.edit) {
// create draggable area
var tdDrag = document.createElement('td');
if (this.parent) {
var domDrag = document.createElement('button');
dom.drag = domDrag;
domDrag.className = 'dragarea';
domDrag.title = 'Drag to move this field (Alt+Shift+Arrows)';
tdDrag.appendChild(domDrag);
}
dom.tr.appendChild(tdDrag);
// create context menu
var tdMenu = document.createElement('td');
var menu = document.createElement('button');
dom.menu = menu;
menu.className = 'contextmenu';
menu.title = 'Click to open the actions menu (Ctrl+M)';
tdMenu.appendChild(dom.menu);
dom.tr.appendChild(tdMenu);
}
// create tree and field
var tdField = document.createElement('td');
dom.tr.appendChild(tdField);
dom.tree = this._createDomTree();
tdField.appendChild(dom.tree);
this.updateDom({'updateIndexes': true});
return dom.tr;
};
/**
* DragStart event, fired on mousedown on the dragarea at the left side of a Node
* @param {Event} event
* @private
*/
Node.prototype._onDragStart = function (event) {
var node = this;
if (!this.mousemove) {
this.mousemove = util.addEventListener(document, 'mousemove',
function (event) {
node._onDrag(event);
});
}
if (!this.mouseup) {
this.mouseup = util.addEventListener(document, 'mouseup',
function (event ) {
node._onDragEnd(event);
});
}
this.editor.highlighter.lock();
this.drag = {
'oldCursor': document.body.style.cursor,
'startParent': this.parent,
'startIndex': this.parent.childs.indexOf(this),
'mouseX': event.pageX,
'level': this.getLevel()
};
document.body.style.cursor = 'move';
event.preventDefault();
};
/**
* Drag event, fired when moving the mouse while dragging a Node
* @param {Event} event
* @private
*/
Node.prototype._onDrag = function (event) {
// TODO: this method has grown too large. Split it in a number of methods
var mouseY = event.pageY;
var mouseX = event.pageX;
var trThis, trPrev, trNext, trFirst, trLast, trRoot;
var nodePrev, nodeNext;
var topThis, topPrev, topFirst, heightThis, bottomNext, heightNext;
var moved = false;
// TODO: add an ESC option, which resets to the original position
// move up/down
trThis = this.dom.tr;
topThis = util.getAbsoluteTop(trThis);
heightThis = trThis.offsetHeight;
if (mouseY < topThis) {
// move up
trPrev = trThis;
do {
trPrev = trPrev.previousSibling;
nodePrev = Node.getNodeFromTarget(trPrev);
topPrev = trPrev ? util.getAbsoluteTop(trPrev) : 0;
}
while (trPrev && mouseY < topPrev);
if (nodePrev && !nodePrev.parent) {
nodePrev = undefined;
}
if (!nodePrev) {
// move to the first node
trRoot = trThis.parentNode.firstChild;
trPrev = trRoot ? trRoot.nextSibling : undefined;
nodePrev = Node.getNodeFromTarget(trPrev);
if (nodePrev == this) {
nodePrev = undefined;
}
}
if (nodePrev) {
// check if mouseY is really inside the found node
trPrev = nodePrev.dom.tr;
topPrev = trPrev ? util.getAbsoluteTop(trPrev) : 0;
if (mouseY > topPrev + heightThis) {
nodePrev = undefined;
}
}
if (nodePrev) {
nodePrev.parent.moveBefore(this, nodePrev);
moved = true;
}
}
else {
// move down
trLast = (this.expanded && this.append) ? this.append.getDom() : this.dom.tr;
trFirst = trLast ? trLast.nextSibling : undefined;
if (trFirst) {
topFirst = util.getAbsoluteTop(trFirst);
trNext = trFirst;
do {
nodeNext = Node.getNodeFromTarget(trNext);
if (trNext) {
bottomNext = trNext.nextSibling ?
util.getAbsoluteTop(trNext.nextSibling) : 0;
heightNext = trNext ? (bottomNext - topFirst) : 0;
if (nodeNext.parent.childs.length == 1 && nodeNext.parent.childs[0] == this) {
// We are about to remove the last child of this parent,
// which will make the parents appendNode visible.
topThis += 24 - 1;
// TODO: dangerous to suppose the height of the appendNode a constant of 24-1 px.
}
}
trNext = trNext.nextSibling;
}
while (trNext && mouseY > topThis + heightNext);
if (nodeNext && nodeNext.parent) {
// calculate the desired level
var diffX = (mouseX - this.drag.mouseX);
var diffLevel = Math.round(diffX / 24 / 2);
var level = this.drag.level + diffLevel; // desired level
var levelNext = nodeNext.getLevel(); // level to be
// find the best fitting level (move upwards over the append nodes)
trPrev = nodeNext.dom.tr.previousSibling;
while (levelNext < level && trPrev) {
nodePrev = Node.getNodeFromTarget(trPrev);
if (nodePrev == this || nodePrev._isChildOf(this)) {
// neglect itself and its childs
}
else if (nodePrev instanceof AppendNode) {
var childs = nodePrev.parent.childs;
if (childs.length > 1 ||
(childs.length == 1 && childs[0] != this)) {
// non-visible append node of a list of childs
// consisting of not only this node (else the
// append node will change into a visible "empty"
// text when removing this node).
nodeNext = Node.getNodeFromTarget(trPrev);
levelNext = nodeNext.getLevel();
}
else {
break;
}
}
else {
break;
}
trPrev = trPrev.previousSibling;
}
// move the node when its position is changed
if (trLast.nextSibling != nodeNext.dom.tr) {
nodeNext.parent.moveBefore(this, nodeNext);
moved = true;
}
}
}
}
if (moved) {
// update the dragging parameters when moved
this.drag.mouseX = mouseX;
this.drag.level = this.getLevel();
}
// auto scroll when hovering around the top of the editor
this.editor.startAutoScroll(mouseY);
event.preventDefault();
};
/**
* Drag event, fired on mouseup after having dragged a node
* @param {Event} event
* @private
*/
Node.prototype._onDragEnd = function (event) {
var params = {
'node': this,
'startParent': this.drag.startParent,
'startIndex': this.drag.startIndex,
'endParent': this.parent,
'endIndex': this.parent.childs.indexOf(this)
};
if ((params.startParent != params.endParent) ||
(params.startIndex != params.endIndex)) {
// only register this action if the node is actually moved to another place
this.editor._onAction('moveNode', params);
}
document.body.style.cursor = this.drag.oldCursor;
this.editor.highlighter.unlock();
delete this.drag;
if (this.mousemove) {
util.removeEventListener(document, 'mousemove', this.mousemove);
delete this.mousemove;}
if (this.mouseup) {
util.removeEventListener(document, 'mouseup', this.mouseup);
delete this.mouseup;
}
// Stop any running auto scroll
this.editor.stopAutoScroll();
event.preventDefault();
};
/**
* Test if this node is a child of an other node
* @param {Node} node
* @return {boolean} isChild
* @private
*/
Node.prototype._isChildOf = function (node) {
var n = this.parent;
while (n) {
if (n == node) {
return true;
}
n = n.parent;
}
return false;
};
/**
* Create an editable field
* @return {Element} domField
* @private
*/
Node.prototype._createDomField = function () {
return document.createElement('div');
};
/**
* Set highlighting for this node and all its childs.
* Only applied to the currently visible (expanded childs)
* @param {boolean} highlight
*/
Node.prototype.setHighlight = function (highlight) {
if (this.dom.tr) {
this.dom.tr.className = (highlight ? 'highlight' : '');
if (this.append) {
this.append.setHighlight(highlight);
}
if (this.childs) {
this.childs.forEach(function (child) {
child.setHighlight(highlight);
});
}
}
};
/**
* Update the value of the node. Only primitive types are allowed, no Object
* or Array is allowed.
* @param {String | Number | Boolean | null} value
*/
Node.prototype.updateValue = function (value) {
this.value = value;
this.updateDom();
};
/**
* Update the field of the node.
* @param {String} field
*/
Node.prototype.updateField = function (field) {
this.field = field;
this.updateDom();
};
/**
* Update the HTML DOM, optionally recursing through the childs
* @param {Object} [options] Available parameters:
* {boolean} [recurse] If true, the
* DOM of the childs will be updated recursively.
* False by default.
* {boolean} [updateIndexes] If true, the childs
* indexes of the node will be updated too. False by
* default.
*/
Node.prototype.updateDom = function (options) {
// update level indentation
var domTree = this.dom.tree;
if (domTree) {
domTree.style.marginLeft = this.getLevel() * 24 + 'px';
}
// update field
var domField = this.dom.field;
if (domField) {
if (this.fieldEditable == true) {
// parent is an object
domField.contentEditable = this.editor.mode.edit;
domField.spellcheck = false;
domField.className = 'field';
}
else {
// parent is an array this is the root node
domField.className = 'readonly';
}
var field;
if (this.index != undefined) {
field = this.index;
}
else if (this.field != undefined) {
field = this.field;
}
else if (this._hasChilds()) {
field = this.type;
}
else {
field = '';
}
domField.innerHTML = this._escapeHTML(field);
}
// update value
var domValue = this.dom.value;
if (domValue) {
var count = this.childs ? this.childs.length : 0;
if (this.type == 'array') {
domValue.innerHTML = '[' + count + ']';
}
else if (this.type == 'object') {
domValue.innerHTML = '{' + count + '}';
}
else {
domValue.innerHTML = this._escapeHTML(this.value);
}
}
// update field and value
this._updateDomField();
this._updateDomValue();
// update childs indexes
if (options && options.updateIndexes == true) {
// updateIndexes is true or undefined
this._updateDomIndexes();
}
if (options && options.recurse == true) {
// recurse is true or undefined. update childs recursively
if (this.childs) {
this.childs.forEach(function (child) {
child.updateDom(options);
});
}
}
// update row with append button
if (this.append) {
this.append.updateDom();
}
};
/**
* Update the DOM of the childs of a node: update indexes and undefined field
* names.
* Only applicable when structure is an array or object
* @private
*/
Node.prototype._updateDomIndexes = function () {
var domValue = this.dom.value;
var childs = this.childs;
if (domValue && childs) {
if (this.type == 'array') {
childs.forEach(function (child, index) {
child.index = index;
var childField = child.dom.field;
if (childField) {
childField.innerHTML = index;
}
});
}
else if (this.type == 'object') {
childs.forEach(function (child) {
if (child.index != undefined) {
delete child.index;
if (child.field == undefined) {
child.field = '';
}
}
});
}
}
};
/**
* Create an editable value
* @private
*/
Node.prototype._createDomValue = function () {
var domValue;
if (this.type == 'array') {
domValue = document.createElement('div');
domValue.className = 'readonly';
domValue.innerHTML = '[...]';
}
else if (this.type == 'object') {
domValue = document.createElement('div');
domValue.className = 'readonly';
domValue.innerHTML = '{...}';
}
else {
if (!this.editor.mode.edit && util.isUrl(this.value)) {
// create a link in case of read-only editor and value containing an url
domValue = document.createElement('a');
domValue.className = 'value';
domValue.href = this.value;
domValue.target = '_blank';
domValue.innerHTML = this._escapeHTML(this.value);
}
else {
// create and editable or read-only div
domValue = document.createElement('div');
domValue.contentEditable = !this.editor.mode.view;
domValue.spellcheck = false;
domValue.className = 'value';
domValue.innerHTML = this._escapeHTML(this.value);
}
}
return domValue;
};
/**
* Create an expand/collapse button
* @return {Element} expand
* @private
*/
Node.prototype._createDomExpandButton = function () {
// create expand button
var expand = document.createElement('button');
if (this._hasChilds()) {
expand.className = this.expanded ? 'expanded' : 'collapsed';
expand.title =
'Click to expand/collapse this field (Ctrl+E). \n' +
'Ctrl+Click to expand/collapse including all childs.';
}
else {
expand.className = 'invisible';
expand.title = '';
}
return expand;
};
/**
* Create a DOM tree element, containing the expand/collapse button
* @return {Element} domTree
* @private
*/
Node.prototype._createDomTree = function () {
var dom = this.dom;
var domTree = document.createElement('table');
var tbody = document.createElement('tbody');
domTree.style.borderCollapse = 'collapse'; // TODO: put in css
domTree.className = 'values';
domTree.appendChild(tbody);
var tr = document.createElement('tr');
tbody.appendChild(tr);
// create expand button
var tdExpand = document.createElement('td');
tdExpand.className = 'tree';
tr.appendChild(tdExpand);
dom.expand = this._createDomExpandButton();
tdExpand.appendChild(dom.expand);
dom.tdExpand = tdExpand;
// create the field
var tdField = document.createElement('td');
tdField.className = 'tree';
tr.appendChild(tdField);
dom.field = this._createDomField();
tdField.appendChild(dom.field);
dom.tdField = tdField;
// create a separator
var tdSeparator = document.createElement('td');
tdSeparator.className = 'tree';
tr.appendChild(tdSeparator);
if (this.type != 'object' && this.type != 'array') {
tdSeparator.appendChild(document.createTextNode(':'));
tdSeparator.className = 'separator';
}
dom.tdSeparator = tdSeparator;
// create the value
var tdValue = document.createElement('td');
tdValue.className = 'tree';
tr.appendChild(tdValue);
dom.value = this._createDomValue();
tdValue.appendChild(dom.value);
dom.tdValue = tdValue;
return domTree;
};
/**
* Handle an event. The event is catched centrally by the editor
* @param {Event} event
*/
Node.prototype.onEvent = function (event) {
var type = event.type,
target = event.target || event.srcElement,
dom = this.dom,
node = this,
focusNode,
expandable = this._hasChilds();
// check if mouse is on menu or on dragarea.
// If so, highlight current row and its childs
if (target == dom.drag || target == dom.menu) {
if (type == 'mouseover') {
this.editor.highlighter.highlight(this);
}
else if (type == 'mouseout') {
this.editor.highlighter.unhighlight();
}
}
// drag events
if (type == 'mousedown' && target == dom.drag) {
this._onDragStart(event);
}
// context menu events
if (type == 'click' && target == dom.menu) {
var highlighter = node.editor.highlighter;
highlighter.highlight(node);
highlighter.lock();
util.addClassName(dom.menu, 'selected');
this.showContextMenu(dom.menu, function () {
util.removeClassName(dom.menu, 'selected');
highlighter.unlock();
highlighter.unhighlight();
});
}
// expand events
if (type == 'click' && target == dom.expand) {
if (expandable) {
var recurse = event.ctrlKey; // with ctrl-key, expand/collapse all
this._onExpand(recurse);
}
}
// value events
var domValue = dom.value;
if (target == domValue) {
//noinspection FallthroughInSwitchStatementJS
switch (type) {
case 'focus':
focusNode = this;
break;
case 'blur':
case 'change':
this._getDomValue(true);
this._updateDomValue();
if (this.value) {
domValue.innerHTML = this._escapeHTML(this.value);
}
break;
case 'input':
this._getDomValue(true);
this._updateDomValue();
break;
case 'keydown':
case 'mousedown':
this.editor.selection = this.editor.getSelection();
break;
case 'click':
if (event.ctrlKey && this.editor.mode.edit) {
if (util.isUrl(this.value)) {
window.open(this.value, '_blank');
}
}
break;
case 'keyup':
this._getDomValue(true);
this._updateDomValue();
break;
case 'cut':
case 'paste':
setTimeout(function () {
node._getDomValue(true);
node._updateDomValue();
}, 1);
break;
}
}
// field events
var domField = dom.field;
if (target == domField) {
switch (type) {
case 'focus':
focusNode = this;
break;
case 'blur':
case 'change':
this._getDomField(true);
this._updateDomField();
if (this.field) {
domField.innerHTML = this._escapeHTML(this.field);
}
break;
case 'input':
this._getDomField(true);
this._updateDomField();
break;
case 'keydown':
case 'mousedown':
this.editor.selection = this.editor.getSelection();
break;
case 'keyup':
this._getDomField(true);
this._updateDomField();
break;
case 'cut':
case 'paste':
setTimeout(function () {
node._getDomField(true);
node._updateDomField();
}, 1);
break;
}
}
// focus
// when clicked in whitespace left or right from the field or value, set focus
var domTree = dom.tree;
if (target == domTree.parentNode) {
switch (type) {
case 'click':
var left = (event.offsetX != undefined) ?
(event.offsetX < (this.getLevel() + 1) * 24) :
(event.pageX < util.getAbsoluteLeft(dom.tdSeparator));// for FF
if (left || expandable) {
// node is expandable when it is an object or array
if (domField) {
util.setEndOfContentEditable(domField);
domField.focus();
}
}
else {
if (domValue) {
util.setEndOfContentEditable(domValue);
domValue.focus();
}
}
break;
}
}
if ((target == dom.tdExpand && !expandable) || target == dom.tdField ||
target == dom.tdSeparator) {
switch (type) {
case 'click':
if (domField) {
util.setEndOfContentEditable(domField);
domField.focus();
}
break;
}
}
if (type == 'keydown') {
this.onKeyDown(event);
}
};
/**
* Key down event handler
* @param {Event} event
*/
Node.prototype.onKeyDown = function (event) {
var keynum = event.which || event.keyCode;
var target = event.target || event.srcElement;
var ctrlKey = event.ctrlKey;
var shiftKey = event.shiftKey;
var altKey = event.altKey;
var handled = false;
var prevNode, nextNode, nextDom, nextDom2;
// util.log(ctrlKey, keynum, event.charCode); // TODO: cleanup
if (keynum == 13) { // Enter
if (target == this.dom.value) {
if (!this.editor.mode.edit || event.ctrlKey) {
if (util.isUrl(this.value)) {
window.open(this.value, '_blank');
handled = true;
}
}
}
else if (target == this.dom.expand) {
var expandable = this._hasChilds();
if (expandable) {
var recurse = event.ctrlKey; // with ctrl-key, expand/collapse all
this._onExpand(recurse);
target.focus();
handled = true;
}
}
}
else if (keynum == 68) { // D
if (ctrlKey) { // Ctrl+D
this._onDuplicate();
handled = true;
}
}
else if (keynum == 69) { // E
if (ctrlKey) { // Ctrl+E and Ctrl+Shift+E
this._onExpand(shiftKey); // recurse = shiftKey
target.focus(); // TODO: should restore focus in case of recursing expand (which takes DOM offline)
handled = true;
}
}
else if (keynum == 77) { // M
if (ctrlKey) { // Ctrl+M
this.showContextMenu(target);
handled = true;
}
}
else if (keynum == 46) { // Del
if (ctrlKey) { // Ctrl+Del
this._onRemove();
handled = true;
}
}
else if (keynum == 45) { // Ins
if (ctrlKey && !shiftKey) { // Ctrl+Ins
this._onInsertBefore();
handled = true;
}
else if (ctrlKey && shiftKey) { // Ctrl+Shift+Ins
this._onInsertAfter();
handled = true;
}
}
else if (keynum == 35) { // End
if (altKey) { // Alt+End
// find the last node
var lastNode = this._lastNode();
if (lastNode) {
lastNode.focus(Node.focusElement || this._getElementName(target));
}
handled = true;
}
}
else if (keynum == 36) { // Home
if (altKey) { // Alt+Home
// find the first node
var firstNode = this._firstNode();
if (firstNode) {
firstNode.focus(Node.focusElement || this._getElementName(target));
}
handled = true;
}
}
else if (keynum == 37) { // Arrow Left
if (altKey && !shiftKey) { // Alt + Arrow Left
// move to left element
var prevElement = this._previousElement(target);
if (prevElement) {
this.focus(this._getElementName(prevElement));
}
handled = true;
}
else if (altKey && shiftKey) { // Alt + Shift Arrow left
if (this.expanded) {
var appendDom = this.getAppend();
nextDom = appendDom ? appendDom.nextSibling : undefined;
}
else {
var dom = this.getDom();
nextDom = dom.nextSibling;
}
if (nextDom) {
nextNode = Node.getNodeFromTarget(nextDom);
nextDom2 = nextDom.nextSibling;
nextNode2 = Node.getNodeFromTarget(nextDom2);
if (nextNode && nextNode instanceof AppendNode &&
!(this.parent.childs.length == 1) &&
nextNode2 && nextNode2.parent) {
nextNode2.parent.moveBefore(this, nextNode2);
this.focus(Node.focusElement || this._getElementName(target));
}
}
}
}
else if (keynum == 38) { // Arrow Up
if (altKey && !shiftKey) { // Alt + Arrow Up
// find the previous node
prevNode = this._previousNode();
if (prevNode) {
prevNode.focus(Node.focusElement || this._getElementName(target));
}
handled = true;
}
else if (altKey && shiftKey) { // Alt + Shift + Arrow Up
// find the previous node
prevNode = this._previousNode();
if (prevNode && prevNode.parent) {
prevNode.parent.moveBefore(this, prevNode);
this.focus(Node.focusElement || this._getElementName(target));
}
handled = true;
}
}
else if (keynum == 39) { // Arrow Right
if (altKey && !shiftKey) { // Alt + Arrow Right
// move to right element
var nextElement = this._nextElement(target);
if (nextElement) {
this.focus(this._getElementName(nextElement));
}
handled = true;
}
else if (altKey && shiftKey) { // Alt + Shift Arrow Right
dom = this.getDom();
var prevDom = dom.previousSibling;
if (prevDom) {
prevNode = Node.getNodeFromTarget(prevDom);
if (prevNode && prevNode.parent &&
(prevNode instanceof AppendNode)
&& !prevNode.isVisible()) {
prevNode.parent.moveBefore(this, prevNode);
this.focus(Node.focusElement || this._getElementName(target));
}
}
}
}
else if (keynum == 40) { // Arrow Down
if (altKey && !shiftKey) { // Alt + Arrow Down
// find the next node
nextNode = this._nextNode();
if (nextNode) {
nextNode.focus(Node.focusElement || this._getElementName(target));
}
handled = true;
}
else if (altKey && shiftKey) { // Alt + Shift + Arrow Down
// find the 2nd next node and move before that one
if (this.expanded) {
nextNode = this.append ? this.append._nextNode() : undefined;
}
else {
nextNode = this._nextNode();
}
nextDom = nextNode ? nextNode.getDom() : undefined;
if (this.parent.childs.length == 1) {
nextDom2 = nextDom;
}
else {
nextDom2 = nextDom ? nextDom.nextSibling : undefined;
}
var nextNode2 = Node.getNodeFromTarget(nextDom2);
if (nextNode2 && nextNode2.parent) {
nextNode2.parent.moveBefore(this, nextNode2);
this.focus(Node.focusElement || this._getElementName(target));
}
handled = true;
}
}
if (handled) {
event.preventDefault();
event.stopPropagation();
}
};
/**
* Handle the expand event, when clicked on the expand button
* @param {boolean} recurse If true, child nodes will be expanded too
* @private
*/
Node.prototype._onExpand = function (recurse) {
if (recurse) {
// Take the table offline
var table = this.dom.tr.parentNode; // TODO: not nice to access the main table like this
var frame = table.parentNode;
var scrollTop = frame.scrollTop;
frame.removeChild(table);
}
if (this.expanded) {
this.collapse(recurse);
}
else {
this.expand(recurse);
}
if (recurse) {
// Put the table online again
frame.appendChild(table);
frame.scrollTop = scrollTop;
}
};
/**
* Remove this node
* @private
*/
Node.prototype._onRemove = function() {
this.editor.highlighter.unhighlight();
var childs = this.parent.childs;
var index = childs.indexOf(this);
// adjust the focus
var oldSelection = this.editor.getSelection();
if (childs[index + 1]) {
childs[index + 1].focus();
}
else if (childs[index - 1]) {
childs[index - 1].focus();
}
else {
this.parent.focus();
}
var newSelection = this.editor.getSelection();
// remove the node
this.parent._remove(this);
// store history action
this.editor._onAction('removeNode', {
'node': this,
'parent': this.parent,
'index': index,
'oldSelection': oldSelection,
'newSelection': newSelection
});
};
/**
* Duplicate this node
* @private
*/
Node.prototype._onDuplicate = function() {
var oldSelection = this.editor.getSelection();
var clone = this.parent._duplicate(this);
clone.focus();
var newSelection = this.editor.getSelection();
this.editor._onAction('duplicateNode', {
'node': this,
'clone': clone,
'parent': this.parent,
'oldSelection': oldSelection,
'newSelection': newSelection
});
};
/**
* Handle insert before event
* @param {String} [field]
* @param {*} [value]
* @param {String} [type] Can be 'auto', 'array', 'object', or 'string'
* @private
*/
Node.prototype._onInsertBefore = function (field, value, type) {
var oldSelection = this.editor.getSelection();
var newNode = new Node(this.editor, {
'field': (field != undefined) ? field : '',
'value': (value != undefined) ? value : '',
'type': type
});
newNode.expand(true);
this.parent.insertBefore(newNode, this);
this.editor.highlighter.unhighlight();
newNode.focus('field');
var newSelection = this.editor.getSelection();
this.editor._onAction('insertBeforeNode', {
'node': newNode,
'beforeNode': this,
'parent': this.parent,
'oldSelection': oldSelection,
'newSelection': newSelection
});
};
/**
* Handle insert after event
* @param {String} [field]
* @param {*} [value]
* @param {String} [type] Can be 'auto', 'array', 'object', or 'string'
* @private
*/
Node.prototype._onInsertAfter = function (field, value, type) {
var oldSelection = this.editor.getSelection();
var newNode = new Node(this.editor, {
'field': (field != undefined) ? field : '',
'value': (value != undefined) ? value : '',
'type': type
});
newNode.expand(true);
this.parent.insertAfter(newNode, this);
this.editor.highlighter.unhighlight();
newNode.focus('field');
var newSelection = this.editor.getSelection();
this.editor._onAction('insertAfterNode', {
'node': newNode,
'afterNode': this,
'parent': this.parent,
'oldSelection': oldSelection,
'newSelection': newSelection
});
};
/**
* Handle append event
* @param {String} [field]
* @param {*} [value]
* @param {String} [type] Can be 'auto', 'array', 'object', or 'string'
* @private
*/
Node.prototype._onAppend = function (field, value, type) {
var oldSelection = this.editor.getSelection();
var newNode = new Node(this.editor, {
'field': (field != undefined) ? field : '',
'value': (value != undefined) ? value : '',
'type': type
});
newNode.expand(true);
this.parent.appendChild(newNode);
this.editor.highlighter.unhighlight();
newNode.focus('field');
var newSelection = this.editor.getSelection();
this.editor._onAction('appendNode', {
'node': newNode,
'parent': this.parent,
'oldSelection': oldSelection,
'newSelection': newSelection
});
};
/**
* Change the type of the node's value
* @param {String} newType
* @private
*/
Node.prototype._onChangeType = function (newType) {
var oldType = this.type;
if (newType != oldType) {
var oldSelection = this.editor.getSelection();
this.changeType(newType);
var newSelection = this.editor.getSelection();
this.editor._onAction('changeType', {
'node': this,
'oldType': oldType,
'newType': newType,
'oldSelection': oldSelection,
'newSelection': newSelection
});
}
};
/**
* Sort the childs of the node. Only applicable when the node has type 'object'
* or 'array'.
* @param {String} direction Sorting direction. Available values: "asc", "desc"
* @private
*/
Node.prototype._onSort = function (direction) {
if (this._hasChilds()) {
var order = (direction == 'desc') ? -1 : 1;
var prop = (this.type == 'array') ? 'value': 'field';
this.hideChilds();
var oldChilds = this.childs;
var oldSort = this.sort;
// copy the array (the old one will be kept for an undo action
this.childs = this.childs.concat();
// sort the arrays
this.childs.sort(function (a, b) {
if (a[prop] > b[prop]) return order;
if (a[prop] < b[prop]) return -order;
return 0;
});
this.sort = (order == 1) ? 'asc' : 'desc';
this.editor._onAction('sort', {
'node': this,
'oldChilds': oldChilds,
'oldSort': oldSort,
'newChilds': this.childs,
'newSort': this.sort
});
this.showChilds();
}
};
/**
* Create a table row with an append button.
* @return {HTMLElement | undefined} buttonAppend or undefined when inapplicable
*/
Node.prototype.getAppend = function () {
if (!this.append) {
this.append = new AppendNode(this.editor);
this.append.setParent(this);
}
return this.append.getDom();
};
/**
* Find the node from an event target
* @param {Node} target
* @return {Node | undefined} node or undefined when not found
* @static
*/
Node.getNodeFromTarget = function (target) {
while (target) {
if (target.node) {
return target.node;
}
target = target.parentNode;
}
return undefined;
};
/**
* Get the previously rendered node
* @return {Node | null} previousNode
* @private
*/
Node.prototype._previousNode = function () {
var prevNode = null;
var dom = this.getDom();
if (dom && dom.parentNode) {
// find the previous field
var prevDom = dom;
do {
prevDom = prevDom.previousSibling;
prevNode = Node.getNodeFromTarget(prevDom);
}
while (prevDom && (prevNode instanceof AppendNode && !prevNode.isVisible()));
}
return prevNode;
};
/**
* Get the next rendered node
* @return {Node | null} nextNode
* @private
*/
Node.prototype._nextNode = function () {
var nextNode = null;
var dom = this.getDom();
if (dom && dom.parentNode) {
// find the previous field
var nextDom = dom;
do {
nextDom = nextDom.nextSibling;
nextNode = Node.getNodeFromTarget(nextDom);
}
while (nextDom && (nextNode instanceof AppendNode && !nextNode.isVisible()));
}
return nextNode;
};
/**
* Get the first rendered node
* @return {Node | null} firstNode
* @private
*/
Node.prototype._firstNode = function () {
var firstNode = null;
var dom = this.getDom();
if (dom && dom.parentNode) {
var firstDom = dom.parentNode.firstChild;
firstNode = Node.getNodeFromTarget(firstDom);
}
return firstNode;
};
/**
* Get the last rendered node
* @return {Node | null} lastNode
* @private
*/
Node.prototype._lastNode = function () {
var lastNode = null;
var dom = this.getDom();
if (dom && dom.parentNode) {
var lastDom = dom.parentNode.lastChild;
lastNode = Node.getNodeFromTarget(lastDom);
while (lastDom && (lastNode instanceof AppendNode && !lastNode.isVisible())) {
lastDom = lastDom.previousSibling;
lastNode = Node.getNodeFromTarget(lastDom);
}
}
return lastNode;
};
/**
* Get the next element which can have focus.
* @param {Element} elem
* @return {Element | null} nextElem
* @private
*/
Node.prototype._previousElement = function (elem) {
var dom = this.dom;
// noinspection FallthroughInSwitchStatementJS
switch (elem) {
case dom.value:
if (this.fieldEditable) {
return dom.field;
}
// intentional fall through
case dom.field:
if (this._hasChilds()) {
return dom.expand;
}
// intentional fall through
case dom.expand:
return dom.menu;
case dom.menu:
if (dom.drag) {
return dom.drag;
}
// intentional fall through
default:
return null;
}
};
/**
* Get the next element which can have focus.
* @param {Element} elem
* @return {Element | null} nextElem
* @private
*/
Node.prototype._nextElement = function (elem) {
var dom = this.dom;
// noinspection FallthroughInSwitchStatementJS
switch (elem) {
case dom.drag:
return dom.menu;
case dom.menu:
if (this._hasChilds()) {
return dom.expand;
}
// intentional fall through
case dom.expand:
if (this.fieldEditable) {
return dom.field;
}
// intentional fall through
case dom.field:
if (!this._hasChilds()) {
return dom.value;
}
default:
return null;
}
};
/**
* Get the dom name of given element. returns null if not found.
* For example when element == dom.field, "field" is returned.
* @param {Element} element
* @return {String | null} elementName Available elements with name: 'drag',
* 'menu', 'expand', 'field', 'value'
* @private
*/
Node.prototype._getElementName = function (element) {
var dom = this.dom;
for (var name in dom) {
if (dom.hasOwnProperty(name)) {
if (dom[name] == element) {
return name;
}
}
}
return null;
};
/**
* Test if this node has childs. This is the case when the node is an object
* or array.
* @return {boolean} hasChilds
* @private
*/
Node.prototype._hasChilds = function () {
return this.type == 'array' || this.type == 'object';
};
// titles with explanation for the different types
Node.TYPE_TITLES = {
'auto': 'Field type "auto". ' +
'The field type is automatically determined from the value ' +
'and can be a string, number, boolean, or null.',
'object': 'Field type "object". ' +
'An object contains an unordered set of key/value pairs.',
'array': 'Field type "array". ' +
'An array contains an ordered collection of values.',
'string': 'Field type "string". ' +
'Field type is not determined from the value, ' +
'but always returned as string.'
};
/**
* Show a contextmenu for this node
* @param {HTMLElement} anchor Anchor element to attache the context menu to.
* @param {function} [onClose] Callback method called when the context menu
* is being closed.
*/
Node.prototype.showContextMenu = function (anchor, onClose) {
var node = this;
var titles = Node.TYPE_TITLES;
var items = [];
items.push({
'text': 'Type',
'title': 'Change the type of this field',
'className': 'type-' + this.type,
'submenu': [
{
'text': 'Auto',
'className': 'type-auto' +
(this.type == 'auto' ? ' selected' : ''),
'title': titles.auto,
'click': function () {
node._onChangeType('auto');
}
},
{
'text': 'Array',
'className': 'type-array' +
(this.type == 'array' ? ' selected' : ''),
'title': titles.array,
'click': function () {
node._onChangeType('array');
}
},
{
'text': 'Object',
'className': 'type-object' +
(this.type == 'object' ? ' selected' : ''),
'title': titles.object,
'click': function () {
node._onChangeType('object');
}
},
{
'text': 'String',
'className': 'type-string' +
(this.type == 'string' ? ' selected' : ''),
'title': titles.string,
'click': function () {
node._onChangeType('string');
}
}
]
});
if (this._hasChilds()) {
var direction = ((this.sort == 'asc') ? 'desc': 'asc');
items.push({
'text': 'Sort',
'title': 'Sort the childs of this ' + this.type,
'className': 'sort-' + direction,
'click': function () {
node._onSort(direction);
},
'submenu': [
{
'text': 'Ascending',
'className': 'sort-asc',
'title': 'Sort the childs of this ' + this.type + ' in ascending order',
'click': function () {
node._onSort('asc');
}
},
{
'text': 'Descending',
'className': 'sort-desc',
'title': 'Sort the childs of this ' + this.type +' in descending order',
'click': function () {
node._onSort('desc');
}
}
]
});
}
if (this.parent && this.parent._hasChilds()) {
// create a separator
items.push({
'type': 'separator'
});
// create append button (for last child node only)
var childs = node.parent.childs;
if (node == childs[childs.length - 1]) {
items.push({
'text': 'Append',
'title': 'Append a new field with type \'auto\' after this field (Ctrl+Shift+Ins)',
'submenuTitle': 'Select the type of the field to be appended',
'className': 'append',
'click': function () {
node._onAppend('', '', 'auto');
},
'submenu': [
{
'text': 'Auto',
'className': 'type-auto',
'title': titles.auto,
'click': function () {
node._onAppend('', '', 'auto');
}
},
{
'text': 'Array',
'className': 'type-array',
'title': titles.array,
'click': function () {
node._onAppend('', []);
}
},
{
'text': 'Object',
'className': 'type-object',
'title': titles.object,
'click': function () {
node._onAppend('', {});
}
},
{
'text': 'String',
'className': 'type-string',
'title': titles.string,
'click': function () {
node._onAppend('', '', 'string');
}
}
]
});
}
// create insert button
items.push({
'text': 'Insert',
'title': 'Insert a new field with type \'auto\' before this field (Ctrl+Ins)',
'submenuTitle': 'Select the type of the field to be inserted',
'className': 'insert',
'click': function () {
node._onInsertBefore('', '', 'auto');
},
'submenu': [
{
'text': 'Auto',
'className': 'type-auto',
'title': titles.auto,
'click': function () {
node._onInsertBefore('', '', 'auto');
}
},
{
'text': 'Array',
'className': 'type-array',
'title': titles.array,
'click': function () {
node._onInsertBefore('', []);
}
},
{
'text': 'Object',
'className': 'type-object',
'title': titles.object,
'click': function () {
node._onInsertBefore('', {});
}
},
{
'text': 'String',
'className': 'type-string',
'title': titles.string,
'click': function () {
node._onInsertBefore('', '', 'string');
}
}
]
});
// create duplicate button
items.push({
'text': 'Duplicate',
'title': 'Duplicate this field (Ctrl+D)',
'className': 'duplicate',
'click': function () {
node._onDuplicate();
}
});
// create remove button
items.push({
'text': 'Remove',
'title': 'Remove this field (Ctrl+Del)',
'className': 'remove',
'click': function () {
node._onRemove();
}
});
}
var menu = new ContextMenu(items, {close: onClose});
menu.show(anchor);
};
/**
* get the type of a value
* @param {*} value
* @return {String} type Can be 'object', 'array', 'string', 'auto'
* @private
*/
Node.prototype._getType = function(value) {
if (value instanceof Array) {
return 'array';
}
if (value instanceof Object) {
return 'object';
}
if (typeof(value) == 'string' && typeof(this._stringCast(value)) != 'string') {
return 'string';
}
return 'auto';
};
/**
* cast contents of a string to the correct type. This can be a string,
* a number, a boolean, etc
* @param {String} str
* @return {*} castedStr
* @private
*/
Node.prototype._stringCast = function(str) {
var lower = str.toLowerCase(),
num = Number(str), // will nicely fail with '123ab'
numFloat = parseFloat(str); // will nicely fail with ' '
if (str == '') {
return '';
}
else if (lower == 'null') {
return null;
}
else if (lower == 'true') {
return true;
}
else if (lower == 'false') {
return false;
}
else if (!isNaN(num) && !isNaN(numFloat)) {
return num;
}
else {
return str;
}
};
/**
* escape a text, such that it can be displayed safely in an HTML element
* @param {String} text
* @return {String} escapedText
* @private
*/
Node.prototype._escapeHTML = function (text) {
var htmlEscaped = String(text)
.replace(/</g, '&lt;')
.replace(/>/g, '&gt;')
.replace(/ /g, ' &nbsp;') // replace double space with an nbsp and space
.replace(/^ /, '&nbsp;') // space at start
.replace(/ $/, '&nbsp;'); // space at end
var json = JSON.stringify(htmlEscaped);
return json.substring(1, json.length - 1);
};
/**
* unescape a string.
* @param {String} escapedText
* @return {String} text
* @private
*/
Node.prototype._unescapeHTML = function (escapedText) {
var json = '"' + this._escapeJSON(escapedText) + '"';
var htmlEscaped = util.parse(json);
return htmlEscaped
.replace(/&lt;/g, '<')
.replace(/&gt;/g, '>')
.replace(/&nbsp;|\u00A0/g, ' ');
};
/**
* escape a text to make it a valid JSON string. The method will:
* - replace unescaped double quotes with '\"'
* - replace unescaped backslash with '\\'
* - replace returns with '\n'
* @param {String} text
* @return {String} escapedText
* @private
*/
Node.prototype._escapeJSON = function (text) {
// TODO: replace with some smart regex (only when a new solution is faster!)
var escaped = '';
var i = 0, iMax = text.length;
while (i < iMax) {
var c = text.charAt(i);
if (c == '\n') {
escaped += '\\n';
}
else if (c == '\\') {
escaped += c;
i++;
c = text.charAt(i);
if ('"\\/bfnrtu'.indexOf(c) == -1) {
escaped += '\\'; // no valid escape character
}
escaped += c;
}
else if (c == '"') {
escaped += '\\"';
}
else {
escaped += c;
}
i++;
}
return escaped;
};
/**
* @constructor AppendNode
* @extends Node
* @param {TreeEditor} editor
* Create a new AppendNode. This is a special node which is created at the
* end of the list with childs for an object or array
*/
function AppendNode (editor) {
/** @type {TreeEditor} */
this.editor = editor;
this.dom = {};
}
AppendNode.prototype = new Node();
/**
* Return a table row with an append button.
* @return {Element} dom TR element
*/
AppendNode.prototype.getDom = function () {
// TODO: implement a new solution for the append node
var dom = this.dom;
if (dom.tr) {
return dom.tr;
}
// a row for the append button
var trAppend = document.createElement('tr');
trAppend.node = this;
dom.tr = trAppend;
// TODO: consistent naming
if (this.editor.mode.edit) {
// a cell for the dragarea column
dom.tdDrag = document.createElement('td');
// create context menu
var tdMenu = document.createElement('td');
dom.tdMenu = tdMenu;
var menu = document.createElement('button');
menu.className = 'contextmenu';
menu.title = 'Click to open the actions menu (Ctrl+M)';
dom.menu = menu;
tdMenu.appendChild(dom.menu);
}
// a cell for the contents (showing text 'empty')
var tdAppend = document.createElement('td');
var domText = document.createElement('div');
domText.innerHTML = '(empty)';
domText.className = 'readonly';
tdAppend.appendChild(domText);
dom.td = tdAppend;
dom.text = domText;
this.updateDom();
return trAppend;
};
/**
* Update the HTML dom of the Node
*/
AppendNode.prototype.updateDom = function () {
var dom = this.dom;
var tdAppend = dom.td;
if (tdAppend) {
tdAppend.style.paddingLeft = (this.getLevel() * 24 + 26) + 'px';
// TODO: not so nice hard coded offset
}
var domText = dom.text;
if (domText) {
domText.innerHTML = '(empty ' + this.parent.type + ')';
}
// attach or detach the contents of the append node:
// hide when the parent has childs, show when the parent has no childs
var trAppend = dom.tr;
if (!this.isVisible()) {
if (dom.tr.firstChild) {
if (dom.tdDrag) {
trAppend.removeChild(dom.tdDrag);
}
if (dom.tdMenu) {
trAppend.removeChild(dom.tdMenu);
}
trAppend.removeChild(tdAppend);
}
}
else {
if (!dom.tr.firstChild) {
if (dom.tdDrag) {
trAppend.appendChild(dom.tdDrag);
}
if (dom.tdMenu) {
trAppend.appendChild(dom.tdMenu);
}
trAppend.appendChild(tdAppend);
}
}
};
/**
* Check whether the AppendNode is currently visible.
* the AppendNode is visible when its parent has no childs (i.e. is empty).
* @return {boolean} isVisible
*/
AppendNode.prototype.isVisible = function () {
return (this.parent.childs.length == 0);
};
/**
* Show a contextmenu for this node
* @param {HTMLElement} anchor The element to attach the menu to.
* @param {function} [onClose] Callback method called when the context menu
* is being closed.
*/
AppendNode.prototype.showContextMenu = function (anchor, onClose) {
var node = this;
var titles = Node.TYPE_TITLES;
var items = [
// create append button
{
'text': 'Append',
'title': 'Append a new field with type \'auto\' (Ctrl+Shift+Ins)',
'submenuTitle': 'Select the type of the field to be appended',
'className': 'insert',
'click': function () {
node._onAppend('', '', 'auto');
},
'submenu': [
{
'text': 'Auto',
'className': 'type-auto',
'title': titles.auto,
'click': function () {
node._onAppend('', '', 'auto');
}
},
{
'text': 'Array',
'className': 'type-array',
'title': titles.array,
'click': function () {
node._onAppend('', []);
}
},
{
'text': 'Object',
'className': 'type-object',
'title': titles.object,
'click': function () {
node._onAppend('', {});
}
},
{
'text': 'String',
'className': 'type-string',
'title': titles.string,
'click': function () {
node._onAppend('', '', 'string');
}
}
]
}
];
var menu = new ContextMenu(items, {close: onClose});
menu.show(anchor);
};
/**
* Handle an event. The event is catched centrally by the editor
* @param {Event} event
*/
AppendNode.prototype.onEvent = function (event) {
var type = event.type;
var target = event.target || event.srcElement;
var dom = this.dom;
// highlight the append nodes parent
var menu = dom.menu;
if (target == menu) {
if (type == 'mouseover') {
this.editor.highlighter.highlight(this.parent);
}
else if (type == 'mouseout') {
this.editor.highlighter.unhighlight();
}
}
// context menu events
if (type == 'click' && target == dom.menu) {
var highlighter = this.editor.highlighter;
highlighter.highlight(this.parent);
highlighter.lock();
util.addClassName(dom.menu, 'selected');
this.showContextMenu(dom.menu, function () {
util.removeClassName(dom.menu, 'selected');
highlighter.unlock();
highlighter.unhighlight();
});
}
if (type == 'keydown') {
this.onKeyDown(event);
}
};
/**
* A context menu
* @param {Object[]} items Array containing the menu structure
* TODO: describe structure
* @param {Object} [options] Object with options. Available options:
* {function} close Callback called when the
* context menu is being closed.
* @constructor
*/
function ContextMenu (items, options) {
this.dom = {};
var me = this;
var dom = this.dom;
this.anchor = undefined;
this.items = items;
this.eventListeners = {};
this.selection = undefined; // holds the selection before the menu was opened
this.visibleSubmenu = undefined;
this.onClose = options ? options.close : undefined;
// create a container element
var menu = document.createElement('div');
menu.className = 'jsoneditor-contextmenu';
dom.menu = menu;
// create a list to hold the menu items
var list = document.createElement('ul');
list.className = 'menu';
menu.appendChild(list);
dom.list = list;
dom.items = []; // list with all buttons
// create a (non-visible) button to set the focus to the menu
var focusButton = document.createElement('button');
dom.focusButton = focusButton;
var li = document.createElement('li');
li.style.overflow = 'hidden';
li.style.height = '0';
li.appendChild(focusButton);
list.appendChild(li);
function createMenuItems (list, domItems, items) {
items.forEach(function (item) {
if (item.type == 'separator') {
// create a separator
var separator = document.createElement('div');
separator.className = 'separator';
li = document.createElement('li');
li.appendChild(separator);
list.appendChild(li);
}
else {
var domItem = {};
// create a menu item
var li = document.createElement('li');
list.appendChild(li);
// create a button in the menu item
var button = document.createElement('button');
button.className = item.className;
domItem.button = button;
if (item.title) {
button.title = item.title;
}
if (item.click) {
button.onclick = function () {
me.hide();
item.click();
};
}
li.appendChild(button);
// create the contents of the button
if (item.submenu) {
// add the icon to the button
var divIcon = document.createElement('div');
divIcon.className = 'icon';
button.appendChild(divIcon);
button.appendChild(document.createTextNode(item.text));
var buttonSubmenu;
if (item.click) {
// submenu and a button with a click handler
button.className += ' default';
var buttonExpand = document.createElement('button');
domItem.buttonExpand = buttonExpand;
buttonExpand.className = 'expand';
buttonExpand.innerHTML = '<div class="expand"></div>';
li.appendChild(buttonExpand);
if (item.submenuTitle) {
buttonExpand.title = item.submenuTitle;
}
buttonSubmenu = buttonExpand;
}
else {
// submenu and a button without a click handler
var divExpand = document.createElement('div');
divExpand.className = 'expand';
button.appendChild(divExpand);
buttonSubmenu = button;
}
// attach a handler to expand/collapse the submenu
buttonSubmenu.onclick = function () {
me._onExpandItem(domItem);
buttonSubmenu.focus();
};
// create the submenu
var domSubItems = [];
domItem.subItems = domSubItems;
var ul = document.createElement('ul');
domItem.ul = ul;
ul.className = 'menu';
ul.style.height = '0';
li.appendChild(ul);
createMenuItems(ul, domSubItems, item.submenu);
}
else {
// no submenu, just a button with clickhandler
button.innerHTML = '<div class="icon"></div>' + item.text;
}
domItems.push(domItem);
}
});
}
createMenuItems(list, this.dom.items, items);
// TODO: when the editor is small, show the submenu on the right instead of inline?
// calculate the max height of the menu with one submenu expanded
this.maxHeight = 0; // height in pixels
items.forEach(function (item) {
var height = (items.length + (item.submenu ? item.submenu.length : 0)) * 24;
me.maxHeight = Math.max(me.maxHeight, height);
});
}
/**
* Get the currently visible buttons
* @return {Array.<HTMLElement>} buttons
* @private
*/
ContextMenu.prototype._getVisibleButtons = function () {
var buttons = [];
var me = this;
this.dom.items.forEach(function (item) {
buttons.push(item.button);
if (item.buttonExpand) {
buttons.push(item.buttonExpand);
}
if (item.subItems && item == me.expandedItem) {
item.subItems.forEach(function (subItem) {
buttons.push(subItem.button);
if (subItem.buttonExpand) {
buttons.push(subItem.buttonExpand);
}
// TODO: change to fully recursive method
});
}
});
return buttons;
};
// currently displayed context menu, a singleton. We may only have one visible context menu
ContextMenu.visibleMenu = undefined;
/**
* Attach the menu to an anchor
* @param {HTMLElement} anchor
*/
ContextMenu.prototype.show = function (anchor) {
this.hide();
// calculate whether the menu fits below the anchor
var windowHeight = window.innerHeight,
windowScroll = (window.pageYOffset || document.scrollTop),
windowBottom = windowHeight + windowScroll,
anchorHeight = anchor.offsetHeight,
menuHeight = this.maxHeight;
// position the menu
var left = util.getAbsoluteLeft(anchor);
var top = util.getAbsoluteTop(anchor);
if (top + anchorHeight + menuHeight < windowBottom) {
// display the menu below the anchor
this.dom.menu.style.left = left + 'px';
this.dom.menu.style.top = (top + anchorHeight) + 'px';
this.dom.menu.style.bottom = '';
}
else {
// display the menu above the anchor
this.dom.menu.style.left = left + 'px';
this.dom.menu.style.top = '';
this.dom.menu.style.bottom = (windowHeight - top) + 'px';
}
// attach the menu to the document
document.body.appendChild(this.dom.menu);
// create and attach event listeners
var me = this;
var list = this.dom.list;
this.eventListeners.mousedown = util.addEventListener(
document, 'mousedown', function (event) {
// hide menu on click outside of the menu
var target = event.target;
if ((target != list) && !me._isChildOf(target, list)) {
me.hide();
event.stopPropagation();
event.preventDefault();
}
});
this.eventListeners.mousewheel = util.addEventListener(
document, 'mousewheel', function (event) {
// block scrolling when context menu is visible
event.stopPropagation();
event.preventDefault();
});
this.eventListeners.keydown = util.addEventListener(
document, 'keydown', function (event) {
me._onKeyDown(event);
});
// move focus to the first button in the context menu
this.selection = util.getSelection();
this.anchor = anchor;
setTimeout(function () {
me.dom.focusButton.focus();
}, 0);
if (ContextMenu.visibleMenu) {
ContextMenu.visibleMenu.hide();
}
ContextMenu.visibleMenu = this;
};
/**
* Hide the context menu if visible
*/
ContextMenu.prototype.hide = function () {
// remove the menu from the DOM
if (this.dom.menu.parentNode) {
this.dom.menu.parentNode.removeChild(this.dom.menu);
if (this.onClose) {
this.onClose();
}
}
// remove all event listeners
// all event listeners are supposed to be attached to document.
for (var name in this.eventListeners) {
if (this.eventListeners.hasOwnProperty(name)) {
var fn = this.eventListeners[name];
if (fn) {
util.removeEventListener(document, name, fn);
}
delete this.eventListeners[name];
}
}
if (ContextMenu.visibleMenu == this) {
ContextMenu.visibleMenu = undefined;
}
};
/**
* Expand a submenu
* Any currently expanded submenu will be hided.
* @param {Object} domItem
* @private
*/
ContextMenu.prototype._onExpandItem = function (domItem) {
var me = this;
var alreadyVisible = (domItem == this.expandedItem);
// hide the currently visible submenu
var expandedItem = this.expandedItem;
if (expandedItem) {
//var ul = expandedItem.ul;
expandedItem.ul.style.height = '0';
expandedItem.ul.style.padding = '';
setTimeout(function () {
if (me.expandedItem != expandedItem) {
expandedItem.ul.style.display = '';
util.removeClassName(expandedItem.ul.parentNode, 'selected');
}
}, 300); // timeout duration must match the css transition duration
this.expandedItem = undefined;
}
if (!alreadyVisible) {
var ul = domItem.ul;
ul.style.display = 'block';
var height = ul.clientHeight; // force a reflow in Firefox
setTimeout(function () {
if (me.expandedItem == domItem) {
ul.style.height = (ul.childNodes.length * 24) + 'px';
ul.style.padding = '5px 10px';
}
}, 0);
util.addClassName(ul.parentNode, 'selected');
this.expandedItem = domItem;
}
};
/**
* Handle onkeydown event
* @param {Event} event
* @private
*/
ContextMenu.prototype._onKeyDown = function (event) {
var target = event.target;
var keynum = event.which;
var handled = false;
var buttons, targetIndex, prevButton, nextButton;
if (keynum == 27) { // ESC
// hide the menu on ESC key
// restore previous selection and focus
if (this.selection) {
util.setSelection(this.selection);
}
if (this.anchor) {
this.anchor.focus();
}
this.hide();
handled = true;
}
else if (keynum == 9) { // Tab
if (!event.shiftKey) { // Tab
buttons = this._getVisibleButtons();
targetIndex = buttons.indexOf(target);
if (targetIndex == buttons.length - 1) {
// move to first button
buttons[0].focus();
handled = true;
}
}
else { // Shift+Tab
buttons = this._getVisibleButtons();
targetIndex = buttons.indexOf(target);
if (targetIndex == 0) {
// move to last button
buttons[buttons.length - 1].focus();
handled = true;
}
}
}
else if (keynum == 37) { // Arrow Left
if (target.className == 'expand') {
buttons = this._getVisibleButtons();
targetIndex = buttons.indexOf(target);
prevButton = buttons[targetIndex - 1];
if (prevButton) {
prevButton.focus();
}
}
handled = true;
}
else if (keynum == 38) { // Arrow Up
buttons = this._getVisibleButtons();
targetIndex = buttons.indexOf(target);
prevButton = buttons[targetIndex - 1];
if (prevButton && prevButton.className == 'expand') {
// skip expand button
prevButton = buttons[targetIndex - 2];
}
if (!prevButton) {
// move to last button
prevButton = buttons[buttons.length - 1];
}
if (prevButton) {
prevButton.focus();
}
handled = true;
}
else if (keynum == 39) { // Arrow Right
buttons = this._getVisibleButtons();
targetIndex = buttons.indexOf(target);
nextButton = buttons[targetIndex + 1];
if (nextButton && nextButton.className == 'expand') {
nextButton.focus();
}
handled = true;
}
else if (keynum == 40) { // Arrow Down
buttons = this._getVisibleButtons();
targetIndex = buttons.indexOf(target);
nextButton = buttons[targetIndex + 1];
if (nextButton && nextButton.className == 'expand') {
// skip expand button
nextButton = buttons[targetIndex + 2];
}
if (!nextButton) {
// move to first button
nextButton = buttons[0];
}
if (nextButton) {
nextButton.focus();
handled = true;
}
handled = true;
}
// TODO: arrow left and right
if (handled) {
event.stopPropagation();
event.preventDefault();
}
};
/**
* Test if an element is a child of a parent element.
* @param {Element} child
* @param {Element} parent
* @return {boolean} isChild
*/
ContextMenu.prototype._isChildOf = function (child, parent) {
var e = child.parentNode;
while (e) {
if (e == parent) {
return true;
}
e = e.parentNode;
}
return false;
};
/**
* @constructor History
* Store action history, enables undo and redo
* @param {JSONEditor} editor
*/
function History (editor) {
this.editor = editor;
this.clear();
// map with all supported actions
this.actions = {
'editField': {
'undo': function (params) {
params.node.updateField(params.oldValue);
},
'redo': function (params) {
params.node.updateField(params.newValue);
}
},
'editValue': {
'undo': function (params) {
params.node.updateValue(params.oldValue);
},
'redo': function (params) {
params.node.updateValue(params.newValue);
}
},
'appendNode': {
'undo': function (params) {
params.parent.removeChild(params.node);
},
'redo': function (params) {
params.parent.appendChild(params.node);
}
},
'insertBeforeNode': {
'undo': function (params) {
params.parent.removeChild(params.node);
},
'redo': function (params) {
params.parent.insertBefore(params.node, params.beforeNode);
}
},
'insertAfterNode': {
'undo': function (params) {
params.parent.removeChild(params.node);
},
'redo': function (params) {
params.parent.insertAfter(params.node, params.afterNode);
}
},
'removeNode': {
'undo': function (params) {
var parent = params.parent;
var beforeNode = parent.childs[params.index] || parent.append;
parent.insertBefore(params.node, beforeNode);
},
'redo': function (params) {
params.parent.removeChild(params.node);
}
},
'duplicateNode': {
'undo': function (params) {
params.parent.removeChild(params.clone);
},
'redo': function (params) {
params.parent.insertAfter(params.clone, params.node);
}
},
'changeType': {
'undo': function (params) {
params.node.changeType(params.oldType);
},
'redo': function (params) {
params.node.changeType(params.newType);
}
},
'moveNode': {
'undo': function (params) {
params.startParent.moveTo(params.node, params.startIndex);
},
'redo': function (params) {
params.endParent.moveTo(params.node, params.endIndex);
}
},
'sort': {
'undo': function (params) {
var node = params.node;
node.hideChilds();
node.sort = params.oldSort;
node.childs = params.oldChilds;
node.showChilds();
},
'redo': function (params) {
var node = params.node;
node.hideChilds();
node.sort = params.newSort;
node.childs = params.newChilds;
node.showChilds();
}
}
// TODO: restore the original caret position and selection with each undo
// TODO: implement history for actions "expand", "collapse", "scroll", "setDocument"
};
}
/**
* The method onChange is executed when the History is changed, and can
* be overloaded.
*/
History.prototype.onChange = function () {};
/**
* Add a new action to the history
* @param {String} action The executed action. Available actions: "editField",
* "editValue", "changeType", "appendNode",
* "removeNode", "duplicateNode", "moveNode"
* @param {Object} params Object containing parameters describing the change.
* The parameters in params depend on the action (for
* example for "editValue" the Node, old value, and new
* value are provided). params contains all information
* needed to undo or redo the action.
*/
History.prototype.add = function (action, params) {
this.index++;
this.history[this.index] = {
'action': action,
'params': params,
'timestamp': new Date()
};
// remove redo actions which are invalid now
if (this.index < this.history.length - 1) {
this.history.splice(this.index + 1, this.history.length - this.index - 1);
}
// fire onchange event
this.onChange();
};
/**
* Clear history
*/
History.prototype.clear = function () {
this.history = [];
this.index = -1;
// fire onchange event
this.onChange();
};
/**
* Check if there is an action available for undo
* @return {Boolean} canUndo
*/
History.prototype.canUndo = function () {
return (this.index >= 0);
};
/**
* Check if there is an action available for redo
* @return {Boolean} canRedo
*/
History.prototype.canRedo = function () {
return (this.index < this.history.length - 1);
};
/**
* Undo the last action
*/
History.prototype.undo = function () {
if (this.canUndo()) {
var obj = this.history[this.index];
if (obj) {
var action = this.actions[obj.action];
if (action && action.undo) {
action.undo(obj.params);
if (obj.params.oldSelection) {
this.editor.setSelection(obj.params.oldSelection);
}
}
else {
util.log('Error: unknown action "' + obj.action + '"');
}
}
this.index--;
// fire onchange event
this.onChange();
}
};
/**
* Redo the last action
*/
History.prototype.redo = function () {
if (this.canRedo()) {
this.index++;
var obj = this.history[this.index];
if (obj) {
var action = this.actions[obj.action];
if (action && action.redo) {
action.redo(obj.params);
if (obj.params.newSelection) {
this.editor.setSelection(obj.params.newSelection);
}
}
else {
util.log('Error: unknown action "' + obj.action + '"');
}
}
// fire onchange event
this.onChange();
}
};
/**
* create a mode box to be used in the editor menu's
* @param {JSONEditor} editor
* @param {String[]} modes Available modes: 'code', 'form', 'text', 'tree', 'view'
* @param {String} current Available modes: 'code', 'form', 'text', 'tree', 'view'
* @returns {HTMLElement} box
*/
function createModeBox(editor, modes, current) {
/**
* Switch the mode of the editor
* @param {String} mode
*/
function switchMode(mode) {
// switch mode
editor.setMode(mode);
// restore focus on mode box
var modeBox = editor.dom && editor.dom.modeBox;
if (modeBox) {
modeBox.focus();
}
}
// available modes
var availableModes = {
code: {
'text': 'Code',
'title': 'Switch to code highlighter',
'click': function () {
switchMode('code')
}
},
form: {
'text': 'Form',
'title': 'Switch to form editor',
'click': function () {
switchMode('form');
}
},
text: {
'text': 'Text',
'title': 'Switch to plain text editor',
'click': function () {
switchMode('text');
}
},
tree: {
'text': 'Tree',
'title': 'Switch to tree editor',
'click': function () {
switchMode('tree');
}
},
view: {
'text': 'View',
'title': 'Switch to tree view',
'click': function () {
switchMode('view');
}
}
};
// list the selected modes
var items = [];
for (var i = 0; i < modes.length; i++) {
var mode = modes[i];
var item = availableModes[mode];
if (!item) {
throw new Error('Unknown mode "' + mode + '"');
}
item.className = 'type-modes' + ((current == mode) ? ' selected' : '');
items.push(item);
}
// retrieve the title of current mode
var currentMode = availableModes[current];
if (!currentMode) {
throw new Error('Unknown mode "' + current + '"');
}
var currentTitle = currentMode.text;
// create the html element
var box = document.createElement('button');
box.className = 'modes separator';
box.innerHTML = currentTitle + ' &#x25BE;';
box.title = 'Switch editor mode';
box.onclick = function () {
var menu = new ContextMenu(items);
menu.show(box);
};
return box;
}
/**
* @constructor SearchBox
* Create a search box in given HTML container
* @param {JSONEditor} editor The JSON Editor to attach to
* @param {Element} container HTML container element of where to
* create the search box
*/
function SearchBox (editor, container) {
var searchBox = this;
this.editor = editor;
this.timeout = undefined;
this.delay = 200; // ms
this.lastText = undefined;
this.dom = {};
this.dom.container = container;
var table = document.createElement('table');
this.dom.table = table;
table.className = 'search';
container.appendChild(table);
var tbody = document.createElement('tbody');
this.dom.tbody = tbody;
table.appendChild(tbody);
var tr = document.createElement('tr');
tbody.appendChild(tr);
var td = document.createElement('td');
tr.appendChild(td);
var results = document.createElement('div');
this.dom.results = results;
results.className = 'results';
td.appendChild(results);
td = document.createElement('td');
tr.appendChild(td);
var divInput = document.createElement('div');
this.dom.input = divInput;
divInput.className = 'frame';
divInput.title = 'Search fields and values';
td.appendChild(divInput);
// table to contain the text input and search button
var tableInput = document.createElement('table');
divInput.appendChild(tableInput);
var tbodySearch = document.createElement('tbody');
tableInput.appendChild(tbodySearch);
tr = document.createElement('tr');
tbodySearch.appendChild(tr);
var refreshSearch = document.createElement('button');
refreshSearch.className = 'refresh';
td = document.createElement('td');
td.appendChild(refreshSearch);
tr.appendChild(td);
var search = document.createElement('input');
this.dom.search = search;
search.oninput = function (event) {
searchBox._onDelayedSearch(event);
};
search.onchange = function (event) { // For IE 9
searchBox._onSearch(event);
};
search.onkeydown = function (event) {
searchBox._onKeyDown(event);
};
search.onkeyup = function (event) {
searchBox._onKeyUp(event);
};
refreshSearch.onclick = function (event) {
search.select();
};
// TODO: ESC in FF restores the last input, is a FF bug, https://bugzilla.mozilla.org/show_bug.cgi?id=598819
td = document.createElement('td');
td.appendChild(search);
tr.appendChild(td);
var searchNext = document.createElement('button');
searchNext.title = 'Next result (Enter)';
searchNext.className = 'next';
searchNext.onclick = function () {
searchBox.next();
};
td = document.createElement('td');
td.appendChild(searchNext);
tr.appendChild(td);
var searchPrevious = document.createElement('button');
searchPrevious.title = 'Previous result (Shift+Enter)';
searchPrevious.className = 'previous';
searchPrevious.onclick = function () {
searchBox.previous();
};
td = document.createElement('td');
td.appendChild(searchPrevious);
tr.appendChild(td);
}
/**
* Go to the next search result
* @param {boolean} [focus] If true, focus will be set to the next result
* focus is false by default.
*/
SearchBox.prototype.next = function(focus) {
if (this.results != undefined) {
var index = (this.resultIndex != undefined) ? this.resultIndex + 1 : 0;
if (index > this.results.length - 1) {
index = 0;
}
this._setActiveResult(index, focus);
}
};
/**
* Go to the prevous search result
* @param {boolean} [focus] If true, focus will be set to the next result
* focus is false by default.
*/
SearchBox.prototype.previous = function(focus) {
if (this.results != undefined) {
var max = this.results.length - 1;
var index = (this.resultIndex != undefined) ? this.resultIndex - 1 : max;
if (index < 0) {
index = max;
}
this._setActiveResult(index, focus);
}
};
/**
* Set new value for the current active result
* @param {Number} index
* @param {boolean} [focus] If true, focus will be set to the next result.
* focus is false by default.
* @private
*/
SearchBox.prototype._setActiveResult = function(index, focus) {
// de-activate current active result
if (this.activeResult) {
var prevNode = this.activeResult.node;
var prevElem = this.activeResult.elem;
if (prevElem == 'field') {
delete prevNode.searchFieldActive;
}
else {
delete prevNode.searchValueActive;
}
prevNode.updateDom();
}
if (!this.results || !this.results[index]) {
// out of range, set to undefined
this.resultIndex = undefined;
this.activeResult = undefined;
return;
}
this.resultIndex = index;
// set new node active
var node = this.results[this.resultIndex].node;
var elem = this.results[this.resultIndex].elem;
if (elem == 'field') {
node.searchFieldActive = true;
}
else {
node.searchValueActive = true;
}
this.activeResult = this.results[this.resultIndex];
node.updateDom();
// TODO: not so nice that the focus is only set after the animation is finished
node.scrollTo(function () {
if (focus) {
node.focus(elem);
}
});
};
/**
* Cancel any running onDelayedSearch.
* @private
*/
SearchBox.prototype._clearDelay = function() {
if (this.timeout != undefined) {
clearTimeout(this.timeout);
delete this.timeout;
}
};
/**
* Start a timer to execute a search after a short delay.
* Used for reducing the number of searches while typing.
* @param {Event} event
* @private
*/
SearchBox.prototype._onDelayedSearch = function (event) {
// execute the search after a short delay (reduces the number of
// search actions while typing in the search text box)
this._clearDelay();
var searchBox = this;
this.timeout = setTimeout(function (event) {
searchBox._onSearch(event);
},
this.delay);
};
/**
* Handle onSearch event
* @param {Event} event
* @param {boolean} [forceSearch] If true, search will be executed again even
* when the search text is not changed.
* Default is false.
* @private
*/
SearchBox.prototype._onSearch = function (event, forceSearch) {
this._clearDelay();
var value = this.dom.search.value;
var text = (value.length > 0) ? value : undefined;
if (text != this.lastText || forceSearch) {
// only search again when changed
this.lastText = text;
this.results = this.editor.search(text);
this._setActiveResult(undefined);
// display search results
if (text != undefined) {
var resultCount = this.results.length;
switch (resultCount) {
case 0: this.dom.results.innerHTML = 'no&nbsp;results'; break;
case 1: this.dom.results.innerHTML = '1&nbsp;result'; break;
default: this.dom.results.innerHTML = resultCount + '&nbsp;results'; break;
}
}
else {
this.dom.results.innerHTML = '';
}
}
};
/**
* Handle onKeyDown event in the input box
* @param {Event} event
* @private
*/
SearchBox.prototype._onKeyDown = function (event) {
var keynum = event.which;
if (keynum == 27) { // ESC
this.dom.search.value = ''; // clear search
this._onSearch(event);
event.preventDefault();
event.stopPropagation();
}
else if (keynum == 13) { // Enter
if (event.ctrlKey) {
// force to search again
this._onSearch(event, true);
}
else if (event.shiftKey) {
// move to the previous search result
this.previous();
}
else {
// move to the next search result
this.next();
}
event.preventDefault();
event.stopPropagation();
}
};
/**
* Handle onKeyUp event in the input box
* @param {Event} event
* @private
*/
SearchBox.prototype._onKeyUp = function (event) {
var keynum = event.keyCode;
if (keynum != 27 && keynum != 13) { // !show and !Enter
this._onDelayedSearch(event); // For IE 9
}
};
/**
* The highlighter can highlight/unhighlight a node, and
* animate the visibility of a context menu.
* @constructor Highlighter
*/
function Highlighter () {
this.locked = false;
}
/**
* Hightlight given node and its childs
* @param {Node} node
*/
Highlighter.prototype.highlight = function (node) {
if (this.locked) {
return;
}
if (this.node != node) {
// unhighlight current node
if (this.node) {
this.node.setHighlight(false);
}
// highlight new node
this.node = node;
this.node.setHighlight(true);
}
// cancel any current timeout
this._cancelUnhighlight();
};
/**
* Unhighlight currently highlighted node.
* Will be done after a delay
*/
Highlighter.prototype.unhighlight = function () {
if (this.locked) {
return;
}
var me = this;
if (this.node) {
this._cancelUnhighlight();
// do the unhighlighting after a small delay, to prevent re-highlighting
// the same node when moving from the drag-icon to the contextmenu-icon
// or vice versa.
this.unhighlightTimer = setTimeout(function () {
me.node.setHighlight(false);
me.node = undefined;
me.unhighlightTimer = undefined;
}, 0);
}
};
/**
* Cancel an unhighlight action (if before the timeout of the unhighlight action)
* @private
*/
Highlighter.prototype._cancelUnhighlight = function () {
if (this.unhighlightTimer) {
clearTimeout(this.unhighlightTimer);
this.unhighlightTimer = undefined;
}
};
/**
* Lock highlighting or unhighlighting nodes.
* methods highlight and unhighlight do not work while locked.
*/
Highlighter.prototype.lock = function () {
this.locked = true;
};
/**
* Unlock highlighting or unhighlighting nodes
*/
Highlighter.prototype.unlock = function () {
this.locked = false;
};
// create namespace
util = {};
/**
* Parse JSON using the parser built-in in the browser.
* On exception, the jsonString is validated and a detailed error is thrown.
* @param {String} jsonString
*/
util.parse = function parse(jsonString) {
try {
return JSON.parse(jsonString);
}
catch (err) {
// try to throw a more detailed error message using validate
util.validate(jsonString);
throw err;
}
};
/**
* Validate a string containing a JSON object
* This method uses JSONLint to validate the String. If JSONLint is not
* available, the built-in JSON parser of the browser is used.
* @param {String} jsonString String with an (invalid) JSON object
* @throws Error
*/
util.validate = function validate(jsonString) {
if (typeof(jsonlint) != 'undefined') {
jsonlint.parse(jsonString);
}
else {
JSON.parse(jsonString);
}
};
/**
* Extend object a with the properties of object b
* @param {Object} a
* @param {Object} b
* @return {Object} a
*/
util.extend = function extend(a, b) {
for (var prop in b) {
if (b.hasOwnProperty(prop)) {
a[prop] = b[prop];
}
}
return a;
};
/**
* Remove all properties from object a
* @param {Object} a
* @return {Object} a
*/
util.clear = function clear (a) {
for (var prop in a) {
if (a.hasOwnProperty(prop)) {
delete a[prop];
}
}
return a;
};
/**
* Output text to the console, if console is available
* @param {...*} args
*/
util.log = function log (args) {
if (typeof console !== 'undefined' && typeof console.log === 'function') {
console.log.apply(console, arguments);
}
};
/**
* Get the type of an object
* @param {*} object
* @return {String} type
*/
util.type = function type (object) {
if (object === null) {
return 'null';
}
if (object === undefined) {
return 'undefined';
}
if ((object instanceof Number) || (typeof object === 'number')) {
return 'number';
}
if ((object instanceof String) || (typeof object === 'string')) {
return 'string';
}
if ((object instanceof Boolean) || (typeof object === 'boolean')) {
return 'boolean';
}
if ((object instanceof RegExp) || (typeof object === 'regexp')) {
return 'regexp';
}
if (Array.isArray(object)) {
return 'array';
}
return 'object';
};
/**
* Test whether a text contains a url (matches when a string starts
* with 'http://*' or 'https://*' and has no whitespace characters)
* @param {String} text
*/
var isUrlRegex = /^https?:\/\/\S+$/;
util.isUrl = function isUrl (text) {
return (typeof text == 'string' || text instanceof String) &&
isUrlRegex.test(text);
};
/**
* Retrieve the absolute left value of a DOM element
* @param {Element} elem A dom element, for example a div
* @return {Number} left The absolute left position of this element
* in the browser page.
*/
util.getAbsoluteLeft = function getAbsoluteLeft(elem) {
var rect = elem.getBoundingClientRect();
return rect.left + window.pageXOffset || document.scrollLeft || 0;
};
/**
* Retrieve the absolute top value of a DOM element
* @param {Element} elem A dom element, for example a div
* @return {Number} top The absolute top position of this element
* in the browser page.
*/
util.getAbsoluteTop = function getAbsoluteTop(elem) {
var rect = elem.getBoundingClientRect();
return rect.top + window.pageYOffset || document.scrollTop || 0;
};
/**
* add a className to the given elements style
* @param {Element} elem
* @param {String} className
*/
util.addClassName = function addClassName(elem, className) {
var classes = elem.className.split(' ');
if (classes.indexOf(className) == -1) {
classes.push(className); // add the class to the array
elem.className = classes.join(' ');
}
};
/**
* add a className to the given elements style
* @param {Element} elem
* @param {String} className
*/
util.removeClassName = function removeClassName(elem, className) {
var classes = elem.className.split(' ');
var index = classes.indexOf(className);
if (index != -1) {
classes.splice(index, 1); // remove the class from the array
elem.className = classes.join(' ');
}
};
/**
* Strip the formatting from the contents of a div
* the formatting from the div itself is not stripped, only from its childs.
* @param {Element} divElement
*/
util.stripFormatting = function stripFormatting(divElement) {
var childs = divElement.childNodes;
for (var i = 0, iMax = childs.length; i < iMax; i++) {
var child = childs[i];
// remove the style
if (child.style) {
// TODO: test if child.attributes does contain style
child.removeAttribute('style');
}
// remove all attributes
var attributes = child.attributes;
if (attributes) {
for (var j = attributes.length - 1; j >= 0; j--) {
var attribute = attributes[j];
if (attribute.specified == true) {
child.removeAttribute(attribute.name);
}
}
}
// recursively strip childs
util.stripFormatting(child);
}
};
/**
* Set focus to the end of an editable div
* code from Nico Burns
* http://stackoverflow.com/users/140293/nico-burns
* http://stackoverflow.com/questions/1125292/how-to-move-cursor-to-end-of-contenteditable-entity
* @param {Element} contentEditableElement A content editable div
*/
util.setEndOfContentEditable = function setEndOfContentEditable(contentEditableElement) {
var range, selection;
if(document.createRange) {
range = document.createRange();//Create a range (a range is a like the selection but invisible)
range.selectNodeContents(contentEditableElement);//Select the entire contents of the element with the range
range.collapse(false);//collapse the range to the end point. false means collapse to end rather than the start
selection = window.getSelection();//get the selection object (allows you to change selection)
selection.removeAllRanges();//remove any selections already made
selection.addRange(range);//make the range you have just created the visible selection
}
};
/**
* Select all text of a content editable div.
* http://stackoverflow.com/a/3806004/1262753
* @param {Element} contentEditableElement A content editable div
*/
util.selectContentEditable = function selectContentEditable(contentEditableElement) {
if (!contentEditableElement || contentEditableElement.nodeName != 'DIV') {
return;
}
var sel, range;
if (window.getSelection && document.createRange) {
range = document.createRange();
range.selectNodeContents(contentEditableElement);
sel = window.getSelection();
sel.removeAllRanges();
sel.addRange(range);
}
};
/**
* Get text selection
* http://stackoverflow.com/questions/4687808/contenteditable-selected-text-save-and-restore
* @return {Range | TextRange | null} range
*/
util.getSelection = function getSelection() {
if (window.getSelection) {
var sel = window.getSelection();
if (sel.getRangeAt && sel.rangeCount) {
return sel.getRangeAt(0);
}
}
return null;
};
/**
* Set text selection
* http://stackoverflow.com/questions/4687808/contenteditable-selected-text-save-and-restore
* @param {Range | TextRange | null} range
*/
util.setSelection = function setSelection(range) {
if (range) {
if (window.getSelection) {
var sel = window.getSelection();
sel.removeAllRanges();
sel.addRange(range);
}
}
};
/**
* Get selected text range
* @return {Object} params object containing parameters:
* {Number} startOffset
* {Number} endOffset
* {Element} container HTML element holding the
* selected text element
* Returns null if no text selection is found
*/
util.getSelectionOffset = function getSelectionOffset() {
var range = util.getSelection();
if (range && 'startOffset' in range && 'endOffset' in range &&
range.startContainer && (range.startContainer == range.endContainer)) {
return {
startOffset: range.startOffset,
endOffset: range.endOffset,
container: range.startContainer.parentNode
};
}
return null;
};
/**
* Set selected text range in given element
* @param {Object} params An object containing:
* {Element} container
* {Number} startOffset
* {Number} endOffset
*/
util.setSelectionOffset = function setSelectionOffset(params) {
if (document.createRange && window.getSelection) {
var selection = window.getSelection();
if(selection) {
var range = document.createRange();
// TODO: do not suppose that the first child of the container is a textnode,
// but recursively find the textnodes
range.setStart(params.container.firstChild, params.startOffset);
range.setEnd(params.container.firstChild, params.endOffset);
util.setSelection(range);
}
}
};
/**
* Get the inner text of an HTML element (for example a div element)
* @param {Element} element
* @param {Object} [buffer]
* @return {String} innerText
*/
util.getInnerText = function getInnerText(element, buffer) {
var first = (buffer == undefined);
if (first) {
buffer = {
'text': '',
'flush': function () {
var text = this.text;
this.text = '';
return text;
},
'set': function (text) {
this.text = text;
}
};
}
// text node
if (element.nodeValue) {
return buffer.flush() + element.nodeValue;
}
// divs or other HTML elements
if (element.hasChildNodes()) {
var childNodes = element.childNodes;
var innerText = '';
for (var i = 0, iMax = childNodes.length; i < iMax; i++) {
var child = childNodes[i];
if (child.nodeName == 'DIV' || child.nodeName == 'P') {
var prevChild = childNodes[i - 1];
var prevName = prevChild ? prevChild.nodeName : undefined;
if (prevName && prevName != 'DIV' && prevName != 'P' && prevName != 'BR') {
innerText += '\n';
buffer.flush();
}
innerText += util.getInnerText(child, buffer);
buffer.set('\n');
}
else if (child.nodeName == 'BR') {
innerText += buffer.flush();
buffer.set('\n');
}
else {
innerText += util.getInnerText(child, buffer);
}
}
return innerText;
}
else {
if (element.nodeName == 'P' && util.getInternetExplorerVersion() != -1) {
// On Internet Explorer, a <p> with hasChildNodes()==false is
// rendered with a new line. Note that a <p> with
// hasChildNodes()==true is rendered without a new line
// Other browsers always ensure there is a <br> inside the <p>,
// and if not, the <p> does not render a new line
return buffer.flush();
}
}
// br or unknown
return '';
};
/**
* Returns the version of Internet Explorer or a -1
* (indicating the use of another browser).
* Source: http://msdn.microsoft.com/en-us/library/ms537509(v=vs.85).aspx
* @return {Number} Internet Explorer version, or -1 in case of an other browser
*/
util.getInternetExplorerVersion = function getInternetExplorerVersion() {
if (_ieVersion == -1) {
var rv = -1; // Return value assumes failure.
if (navigator.appName == 'Microsoft Internet Explorer')
{
var ua = navigator.userAgent;
var re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
if (re.exec(ua) != null) {
rv = parseFloat( RegExp.$1 );
}
}
_ieVersion = rv;
}
return _ieVersion;
};
/**
* Test whether the current browser is Firefox
* @returns {boolean} isFirefox
*/
util.isFirefox = function isFirefox () {
return (navigator.userAgent.indexOf("Firefox") != -1);
};
/**
* cached internet explorer version
* @type {Number}
* @private
*/
var _ieVersion = -1;
/**
* Add and event listener. Works for all browsers
* @param {Element} element An html element
* @param {string} action The action, for example "click",
* without the prefix "on"
* @param {function} listener The callback function to be executed
* @param {boolean} [useCapture] false by default
* @return {function} the created event listener
*/
util.addEventListener = function addEventListener(element, action, listener, useCapture) {
if (element.addEventListener) {
if (useCapture === undefined)
useCapture = false;
if (action === "mousewheel" && util.isFirefox()) {
action = "DOMMouseScroll"; // For Firefox
}
element.addEventListener(action, listener, useCapture);
return listener;
} else if (element.attachEvent) {
// Old IE browsers
var f = function () {
return listener.call(element, window.event);
};
element.attachEvent("on" + action, f);
return f;
}
};
/**
* Remove an event listener from an element
* @param {Element} element An html dom element
* @param {string} action The name of the event, for example "mousedown"
* @param {function} listener The listener function
* @param {boolean} [useCapture] false by default
*/
util.removeEventListener = function removeEventListener(element, action, listener, useCapture) {
if (element.removeEventListener) {
if (useCapture === undefined)
useCapture = false;
if (action === "mousewheel" && util.isFirefox()) {
action = "DOMMouseScroll"; // For Firefox
}
element.removeEventListener(action, listener, useCapture);
} else if (element.detachEvent) {
// Old IE browsers
element.detachEvent("on" + action, listener);
}
};
// module exports
var jsoneditor = {
'JSONEditor': JSONEditor,
'JSONFormatter': function () {
throw new Error('JSONFormatter is deprecated. ' +
'Use JSONEditor with mode "text" or "code" instead');
},
'util': util
};
/**
* load jsoneditor.css
*/
var loadCss = function () {
// find the script named 'jsoneditor.js' or 'jsoneditor-min.js' or
// 'jsoneditor.min.js', and use its path to find the css file to be
// loaded.
var scripts = document.getElementsByTagName('script');
for (var s = 0; s < scripts.length; s++) {
var src = scripts[s].src;
if (/(^|\/)jsoneditor([-\.]min)?.js$/.test(src)) {
var jsFile = src.split('?')[0];
var cssFile = jsFile.substring(0, jsFile.length - 2) + 'css';
// load css file
var link = document.createElement('link');
link.type = 'text/css';
link.rel = 'stylesheet';
link.href = cssFile;
document.getElementsByTagName('head')[0].appendChild(link);
break;
}
}
};
/**
* CommonJS module exports
*/
if (typeof(module) != 'undefined' && typeof(exports) != 'undefined') {
loadCss();
module.exports = exports = jsoneditor;
}
/**
* AMD module exports
*/
if (typeof(require) != 'undefined' && typeof(define) != 'undefined') {
loadCss();
define(function () {
return jsoneditor;
});
}
else {
// attach the module to the window, load as a regular javascript file
window['jsoneditor'] = jsoneditor;
}
})();
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