Largely fixed jumping of fields when renaming. Some refactoring.

public/jsoneditor.css

@@ -31,7 +31,6 @@ ul.jsoneditor-list {
 .jsoneditor-value,
 .jsoneditor-readonly {
   min-width: 24px;
-  border-radius: 2px;
   word-break: break-word;
 
   font-family: droid sans mono, consolas, monospace, courier new, courier, sans-serif;
@@ -40,6 +39,11 @@ ul.jsoneditor-list {
   outline: none;
 }
 
+.jsoneditor-field,
+.jsoneditor-value {
+  border-radius: 1px;
+}
+
 .jsoneditor-field:focus,
 .jsoneditor-value:focus {
   box-shadow: 0 0 3px 1px #008fd5;

src/JSONNode.js

@@ -1,5 +1,5 @@
 import { h, Component } from 'preact'
-import isObject from './utils/isObject'
+import { isObject } from './utils/objectUtils'
 import { escapeHTML, unescapeHTML } from './utils/escape'
 import getInnerText from './utils/getInnerText'
 import stringConvert from './utils/stringConvert'
@@ -99,7 +99,7 @@ export default class JSONNode extends Component {
       class: 'jsoneditor-field' + (hasParent ? '' : ' jsoneditor-readonly'),
       contentEditable: hasParent,
       spellCheck: 'false',
-      onBlur: onChangeField
+      onInput: onChangeField
     }, content)
   }
 
@@ -132,7 +132,7 @@ export default class JSONNode extends Component {
     const newField = unescapeHTML(getInnerText(event.target))
     const oldField = this.props.field
     if (newField !== oldField) {
-      this.props.onChangeField(path, newField, oldField)
+      this.props.onChangeField(path, oldField, newField)
     }
   }
 

src/Main.js

@@ -1,7 +1,6 @@
 import { h, Component } from 'preact'
-import setIn from './utils/setIn'
-import getIn from './utils/getIn'
-import clone from './utils/clone'
+
+import { getIn, setIn, renameField } from './utils/objectUtils'
 import JSONNode from './JSONNode'
 
 export default class Main extends Component {
@@ -37,18 +36,14 @@ export default class Main extends Component {
     })
   }
 
-  onChangeField (path, newField, oldField) {
+  onChangeField (path, oldField, newField) {
     console.log('onChangeField', path, newField, oldField)
 
-    const value = clone(getIn(this.state.json, path))
-
-    console.log('value', value)
-
-    value[newField] = value[oldField]
-    delete value[oldField]
+    const oldObject = getIn(this.state.json, path)
+    const newObject = renameField(oldObject, oldField, newField)
     
     this.setState({
-      json: setIn(this.state.json, path, value)
+      json: setIn(this.state.json, path, newObject)
     })
   }
 

src/utils/clone.js

@@ -1,27 +0,0 @@
-import isObject from './isObject'
-
-// TODO: unit test clone
-
-/**
- * Flat clone the properties of an object or array
- * @param {Object | Array} value
- * @return {Object | Array} Returns a flat clone of the object or Array
- */
-export default function clone (value) {
-  if (Array.isArray(value)) {
-    return value.slice(0)
-  }
-  else if (isObject(value)) {
-    const cloned = {}
-
-    Object.keys(value).forEach(key => {
-      cloned[key] = value[key]
-    })
-
-    return cloned
-  }
-  else {
-    // a primitive value
-    return value
-  }
-}

src/utils/getIn.js

@@ -1,32 +0,0 @@
-import isObject from './isObject'
-
-// TODO: unit test getIn
-
-/**
- * helper function to get a nested property in an object or array
- *
- * @param {Object | Array} object
- * @param {Array.<string | number>} path
- * @return {* | undefined} Returns the field when found, or undefined when the
- *                         path doesn't exist
- */
-export default function getIn (object, path) {
-  let value = object
-  let i = 0
-
-  while(i < path.length) {
-    if (Array.isArray(value) || isObject(value)) {
-      value = value[path[i]]
-    }
-    else {
-      value = undefined
-    }
-
-    i++
-  }
-
-  return value
-}
-
-
-window.getIn = getIn // TODO: cleanup

src/utils/isObject.js

@@ -1,12 +0,0 @@
-/**
- * Test whether a value is an object (and not an Array or Date or primitive value)
- *
- * @param {*} value
- * @return {boolean}
- */
-export default function isObject (value) {
-  return typeof value === 'object' &&
-      value &&  // not null
-      !Array.isArray(value) &&
-      value.toString() === '[object Object]'
-}

src/utils/objectUtils.js

@@ -0,0 +1,121 @@
+
+/**
+ * Test whether a value is an object (and not an Array or Date or primitive value)
+ *
+ * @param {*} value
+ * @return {boolean}
+ */
+export function isObject (value) {
+  return typeof value === 'object' &&
+      value &&  // not null
+      !Array.isArray(value) &&
+      value.toString() === '[object Object]'
+}
+
+// TODO: unit test getIn
+
+/**
+ * Flat clone the properties of an object or array
+ * @param {Object | Array} value
+ * @return {Object | Array} Returns a flat clone of the object or Array
+ */
+export function clone (value) {
+  if (Array.isArray(value)) {
+    return value.slice(0)
+  }
+  else if (isObject(value)) {
+    const cloned = {}
+
+    Object.keys(value).forEach(key => {
+      cloned[key] = value[key]
+    })
+
+    return cloned
+  }
+  else {
+    // a primitive value
+    return value
+  }
+}
+
+/**
+ * helper function to get a nested property in an object or array
+ *
+ * @param {Object | Array} object
+ * @param {Array.<string | number>} path
+ * @return {* | undefined} Returns the field when found, or undefined when the
+ *                         path doesn't exist
+ */
+export function getIn (object, path) {
+  let value = object
+  let i = 0
+
+  while(i < path.length) {
+    if (Array.isArray(value) || isObject(value)) {
+      value = value[path[i]]
+    }
+    else {
+      value = undefined
+    }
+
+    i++
+  }
+
+  return value
+}
+
+// TODO: unit test setIn
+
+/**
+ * helper function to replace a nested property in an object with a new value
+ * without mutating the object itself.
+ *
+ * @param {Object | Array} object
+ * @param {Array.<string | number>} path
+ * @param {*} value
+ * @return {Object | Array} Returns a new, updated object or array
+ */
+export function setIn (object, path, value) {
+  if (path.length === 0) {
+    return value
+  }
+
+  // TODO: change array into object and vice versa when key is a number/string
+
+  const key = path[0]
+  const child = (Array.isArray(object[key]) || isObject(object[key]))
+      ? object[key]
+      : (typeof path[1] === 'number' ? [] : {})
+  const updated = clone(object)
+
+  updated[key] = setIn(child, path.slice(1), value)
+
+  return updated
+}
+
+/**
+ * Rename a field in an object without mutating the object itself.
+ * The order of the fields in the object is maintained.
+ * @param {Object} object
+ * @param {string} oldField
+ * @param {string} newField
+ * @return {Object} Returns a clone of the object where property `oldField` is
+ *                  renamed to `newField`
+ */
+export function renameField(object, oldField, newField) {
+  const renamed = {}
+
+  // important: maintain the order in which we add the properties to newValue,
+  // else the field will "jump" to another place
+  Object.keys(object).forEach(field => {
+    if (field === oldField) {
+      renamed[newField] = object[oldField]
+    }
+    else {
+      renamed[field] = object[field]
+    }
+  })
+
+  return renamed
+}
+

src/utils/setIn.js

@@ -1,34 +0,0 @@
-import isObject from './isObject'
-import clone from './clone'
-
-// TODO: unit test setIn
-
-/**
- * helper function to replace a nested property in an object with a new value
- * without mutating the object itself.
- *
- * @param {Object | Array} object
- * @param {Array.<string | number>} path
- * @param {*} value
- * @return {Object | Array} Returns a new, updated object or array
- */
-export default function setIn (object, path, value) {
-  if (path.length === 0) {
-    return value
-  }
-
-  // TODO: change array into object and vice versa when key is a number/string
-
-  const key = path[0]
-  const child = (Array.isArray(object[key]) || isObject(object[key]))
-      ? object[key]
-      : (typeof path[1] === 'number' ? [] : {})
-  const updated = clone(object)
-
-  updated[key] = setIn(child, path.slice(1), value)
-
-  return updated
-}
-
-
-window.setIn = setIn // TODO: cleanup