jsoneditor/app/web/app.js

378 lines
11 KiB
JavaScript

/*!
* @file app.js
*
* @brief
* JSONEditor is an editor to display and edit JSON data in a 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>
* @date 2013-04-30
*/
var treeEditor = null;
var codeEditor = null;
var app = {};
/**
* Get the JSON from the code editor and load it in the tree editor
*/
app.CodeToTree = function() {
try {
treeEditor.set(codeEditor.get());
}
catch (err) {
app.notify.showError(app.formatError(err));
}
};
/**
* Get the JSON from the tree editor and load it into the code editor
*/
app.treeToCode = function () {
try {
codeEditor.set(treeEditor.get());
}
catch (err) {
app.notify.showError(app.formatError(err));
}
};
/**
* Load the interface (tree editor, code editor, splitter)
*/
// TODO: split the method load in multiple methods, it is too large
app.load = function() {
try {
// notification handler
app.notify = new Notify();
// retriever for loading/saving files
app.retriever = new FileRetriever({
scriptUrl: 'fileretriever.php',
notify: app.notify
});
// default json document
var json = {
"array": [1, 2, 3],
"boolean": true,
"null": null,
"number": 123,
"object": {"a": "b", "c": "d", "e": "f"},
"string": "Hello World"
};
// load url if query parameters contains a url
if (window.QueryParams) {
var qp = new QueryParams();
var url = qp.getValue('url');
if (url) {
json = {};
app.openUrl(url);
}
}
// Store whether tree editor or code editor is last changed
app.lastChanged = undefined;
// code editor
var container = document.getElementById("codeEditor");
codeEditor = new jsoneditor.JSONEditor(container, {
mode: 'code',
change: function () {
app.lastChanged = codeEditor;
},
error: function (err) {
app.notify.showError(app.formatError(err));
}
});
codeEditor.set(json);
// tree editor
container = document.getElementById("treeEditor");
treeEditor = new jsoneditor.JSONEditor(container, {
mode: 'tree',
change: function () {
app.lastChanged = treeEditor;
},
error: function (err) {
app.notify.showError(app.formatError(err));
}
});
treeEditor.set(json);
// TODO: automatically synchronize data of code and tree editor? (tree editor should keep its state though)
// splitter
app.splitter = new Splitter({
container: document.getElementById('drag'),
change: function () {
app.resize();
}
});
// button Code-to-Tree
var toTree = document.getElementById('toTree');
toTree.onclick = function () {
this.focus();
app.CodeToTree();
};
// button Tree-to-Code
var toCode = document.getElementById('toCode');
toCode.onclick = function () {
this.focus();
app.treeToCode();
};
// web page resize handler
jsoneditor.util.addEventListener(window, 'resize', app.resize);
// clear button
var domClear = document.getElementById('clear');
domClear.onclick = app.clearFile;
/* TODO: enable clicking on open to execute the default, "open file"
// open button
var domOpen = document.getElementById('open');
var domOpenMenuButton = document.getElementById('openMenuButton');
domOpen.onclick = function (event) {
event = event || window.event; // for IE8
var target = event.target || event.srcElement;
if (target == domOpenMenuButton ||
(event.offsetX > domOpen.offsetWidth - domOpenMenuButton.offsetWidth)) {
// clicked on the menu button
}
else {
app.openFile();
}
};
*/
// menu button open file
var domMenuOpenFile = document.getElementById('menuOpenFile');
domMenuOpenFile.onclick = function (event) {
app.openFile();
jsoneditor.util.stopPropagation(event);
jsoneditor.util.preventDefault(event);
};
// menu button open url
var domMenuOpenUrl = document.getElementById('menuOpenUrl');
domMenuOpenUrl.onclick = function (event) {
app.openUrl();
jsoneditor.util.stopPropagation(event);
jsoneditor.util.preventDefault(event);
};
// save button
var domSave = document.getElementById('save');
domSave.onclick = app.saveFile;
// set focus on the code editor
codeEditor.focus();
// enforce FireFox to not do spell checking on any input field
document.body.spellcheck = false;
} catch (err) {
app.notify.showError(err);
}
};
/**
* Callback method called when a file or url is opened.
* @param {Error} err
* @param {String} data
*/
app.openCallback = function (err, data) {
if (!err) {
if (data != null) {
codeEditor.setText(data);
try {
var json = jsoneditor.util.parse(data);
treeEditor.set(json);
}
catch (err) {
treeEditor.set({});
app.notify.showError(app.formatError(err));
}
}
}
else {
app.notify.showError(err);
}
};
/**
* Open a file explorer to select a file and open the file
*/
app.openFile = function() {
app.retriever.loadFile(app.openCallback);
};
/**
* Open a url. If no url is provided as parameter, a dialog will be opened
* to select a url.
* @param {String} [url]
*/
app.openUrl = function (url) {
if (!url) {
app.retriever.loadUrlDialog(app.openCallback);
}
else {
app.retriever.loadUrl(url, app.openCallback);
}
};
/**
* Open a file explorer to save the file.
*/
app.saveFile = function () {
// first synchronize both editors contents
if (app.lastChanged == treeEditor) {
app.treeToCode();
}
/* TODO: also sync from code to tree editor? will clear the history ...
if (app.lastChanged == codeEditor) {
app.CodeToEditor();
}
*/
app.lastChanged = undefined;
// save the text from the code editor
// TODO: show a 'saving...' notification
var data = codeEditor.getText();
app.retriever.saveFile(data, function (err) {
if (err) {
app.notify.showError(err);
}
});
};
/**
* Format a JSON parse/stringify error as HTML
* @param {Error} err
* @returns {string}
*/
app.formatError = function (err) {
var message = '<pre class="error">' + err.toString() + '</pre>';
if (typeof(jsonlint) != 'undefined') {
message +=
'<a class="error" href="http://zaach.github.com/jsonlint/" target="_blank">' +
'validated by jsonlint' +
'</a>';
}
return message;
};
/**
* Clear the current file
*/
app.clearFile = function () {
var json = {};
codeEditor.set(json);
treeEditor.set(json);
};
app.resize = function() {
var domMenu = document.getElementById('menu');
var domTreeEditor = document.getElementById('treeEditor');
var domCodeEditor = document.getElementById('codeEditor');
var domSplitter = document.getElementById('splitter');
var domSplitterButtons = document.getElementById('buttons');
var domSplitterDrag = document.getElementById('drag');
var domAd = document.getElementById('ad');
var margin = 15;
var width = (window.innerWidth || document.body.offsetWidth ||
document.documentElement.offsetWidth);
var adWidth = domAd ? domAd.clientWidth : 0;
if (adWidth) {
width -= (adWidth + margin);
}
if (app.splitter) {
app.splitter.setWidth(width);
// calculate horizontal splitter position
var value = app.splitter.getValue();
var showCodeEditor = (value > 0);
var showTreeEditor = (value < 1);
var showButtons = showCodeEditor && showTreeEditor;
domSplitterButtons.style.display = showButtons ? '' : 'none';
var splitterWidth = domSplitter.clientWidth;
var splitterLeft;
if (!showCodeEditor) {
// code editor not visible
splitterLeft = 0;
domSplitterDrag.innerHTML = '&rsaquo;';
domSplitterDrag.title = 'Drag right to show the code editor';
}
else if (!showTreeEditor) {
// tree editor not visible
splitterLeft = width * value - splitterWidth;
domSplitterDrag.innerHTML = '&lsaquo;';
domSplitterDrag.title = 'Drag left to show the tree editor';
}
else {
// both tree and code editor visible
splitterLeft = width * value - splitterWidth / 2;
// TODO: find a character with vertical dots that works on IE8 too, or use an image
var isIE8 = (jsoneditor.util.getInternetExplorerVersion() == 8);
domSplitterDrag.innerHTML = (!isIE8) ? '&#8942;' : '|';
domSplitterDrag.title = 'Drag left or right to change the width of the panels';
}
// resize code editor
domCodeEditor.style.display = (value == 0) ? 'none' : '';
domCodeEditor.style.width = Math.max(Math.round(splitterLeft), 0) + 'px';
codeEditor.resize();
// resize the splitter
domSplitterDrag.style.height = (domSplitter.clientHeight -
domSplitterButtons.clientHeight - 2 * margin -
(showButtons ? margin : 0)) + 'px';
domSplitterDrag.style.lineHeight = domSplitterDrag.style.height;
// resize tree editor
// the width has a -1 to prevent the width from being just half a pixel
// wider than the window, causing the content elements to wrap...
domTreeEditor.style.display = (value == 1) ? 'none' : '';
domTreeEditor.style.left = Math.round(splitterLeft + splitterWidth) + 'px';
domTreeEditor.style.width = Math.max(Math.round(width - splitterLeft - splitterWidth - 2), 0) + 'px';
}
// align main menu with ads
if (domMenu) {
if (adWidth) {
domMenu.style.right = (margin + (adWidth + margin)) + 'px';
}
else {
domMenu.style.right = margin + 'px';
}
}
};