Show:
                            (function () {
                                'use strict';
                            
                                var KEY_ENTER = 13;
                                var KEY_ESC = 27;
                            
                                /**
                                 * The ButtonEditLink class provides functionality for creating and editing a link in a document.
                                 * Provides UI for creating, editing and removing a link.
                                 *
                                 * @class ButtonLinkEdit
                                 */
                                var ButtonLinkEdit = React.createClass({
                                    // Lifecycle. Provides static properties to the widget.
                                    statics: {
                                        /**
                                         * The name which will be used as an alias of the button in the configuration.
                                         *
                                         * @static
                                         * @property {String} key
                                         * @default linkEdit
                                         */
                                        key: 'linkEdit'
                                    },
                            
                                    /**
                                     * Lifecycle. Invoked once, only on the client, immediately after the initial rendering occurs.
                                     *
                                     * Focuses on the link input to immediately allow editing.
                                     *
                                     * @method componentDidMount
                                     */
                                    componentDidMount: function () {
                                        // We need to wait for the next rendering cycle before focusing to avoid undesired
                                        // scrolls on the page
                                        if (window.requestAnimationFrame) {
                                            window.requestAnimationFrame(this._focusLinkInput);
                                        } else {
                                            setTimeout(this._focusLinkInput, 0);
                                        }
                                    },
                            
                                    /**
                                     * Lifecycle. Invoked once before the component is mounted.
                                     * The return value will be used as the initial value of this.state.
                                     *
                                     * @method getInitialState
                                     */
                                    getInitialState: function() {
                                        var link = new CKEDITOR.Link(this.props.editor.get('nativeEditor')).getFromSelection();
                                        var href = link ? link.getAttribute('href') : '';
                            
                                        return {
                                            element: link,
                                            linkHref: href
                                        };
                                    },
                            
                                    /**
                                     * Lifecycle. Renders the UI of the button.
                                     *
                                     * @method render
                                     * @return {Object} The content which should be rendered.
                                     */
                                    render: function() {
                                        var clearLinkStyle = {
                                            opacity: this.state.linkHref ? 1 : 0
                                        };
                            
                                        return (
                                            <div className="ae-container-edit-link">
                                                <button aria-label={AlloyEditor.Strings.removeLink} className="ae-button" disabled={!this.state.element} onClick={this._removeLink} title={AlloyEditor.Strings.remove}>
                                                    <span className="ae-icon-unlink"></span>
                                                </button>
                                                <div className="ae-container-input">
                                                    <input className="ae-input" onChange={this._handleLinkChange} onKeyDown={this._handleKeyDown} placeholder={AlloyEditor.Strings.editLink} ref="linkInput" type="text" value={this.state.linkHref}></input>
                                                    <button aria-label={AlloyEditor.Strings.clearInput} className="ae-button ae-icon-remove" onClick={this._clearLink} style={clearLinkStyle} title={AlloyEditor.Strings.clear}></button>
                                                </div>
                                                <button aria-label={AlloyEditor.Strings.confirm} className="ae-button" disabled={!this.state.linkHref} onClick={this._updateLink} title={AlloyEditor.Strings.confirm}>
                                                    <span className="ae-icon-ok"></span>
                                                </button>
                                            </div>
                                        );
                                    },
                            
                                    /**
                                     * Clears the link input. This only changes the component internal state, but does not
                                     * affect the link element of the editor. Only the _removeLink and _updateLink methods
                                     * are translated to the editor element.
                                     *
                                     * @protected
                                     * @method _clearLink
                                     */
                                    _clearLink: function() {
                                        this.setState({
                                            linkHref: ''
                                        });
                                    },
                            
                                    /**
                                     * Focuses the user cursor on the widget's input.
                                     *
                                     * @protected
                                     * @method _focusLinkInput
                                     */
                                    _focusLinkInput: function() {
                                        React.findDOMNode(this.refs.linkInput).focus();
                                    },
                            
                                    /**
                                     * Monitors key interaction inside the input element to respond to the keys:
                                     * - Enter: Creates/updates the link.
                                     * - Escape: Discards the changes.
                                     *
                                     * @protected
                                     * @method _handleKeyDown
                                     * @param {SyntheticEvent} event The keyboard event.
                                     */
                                    _handleKeyDown: function(event) {
                                        if (event.keyCode === KEY_ENTER || event.keyCode === KEY_ESC) {
                                            event.preventDefault();
                                        }
                            
                                        if (event.keyCode === KEY_ENTER) {
                                            this._updateLink();
                                        } else if (event.keyCode === KEY_ESC) {
                                            this.props.cancelExclusive();
                            
                                            this.props.editor.get('nativeEditor').focus();
                                        }
                                    },
                            
                                    /**
                                     * Updates the component state when the link input changes on user interaction.
                                     *
                                     * @protected
                                     * @method _handleLinkChange
                                     * @param {SyntheticEvent} event The change event.
                                     */
                                    _handleLinkChange: function(event) {
                                        this.setState({
                                            linkHref: event.target.value
                                        });
                                    },
                            
                                    /**
                                     * Removes the link in the editor element.
                                     *
                                     * @protected
                                     * @method _removeLink
                                     */
                                    _removeLink: function() {
                                        var editor = this.props.editor.get('nativeEditor');
                                        var linkUtils = new CKEDITOR.Link(editor);
                                        var selection = editor.getSelection();
                                        var bookmarks = selection.createBookmarks();
                            
                                        linkUtils.remove(this.state.element);
                            
                                        selection.selectBookmarks(bookmarks);
                            
                                        // We need to cancelExclusive with the bound parameters in case the button is used
                                        // inside another in exclusive mode (such is the case of the link button)
                                        this.props.cancelExclusive();
                            
                                        editor.fire('actionPerformed', this);
                                    },
                            
                                    /**
                                     * Updates the link in the editor element. If the element didn't exist previously, it will
                                     * create a new <a> element with the href specified in the link input.
                                     *
                                     * @protected
                                     * @method _updateLink
                                     */
                                    _updateLink: function() {
                                        var editor = this.props.editor.get('nativeEditor');
                                        var linkUtils = new CKEDITOR.Link(editor);
                            
                                        if (this.state.linkHref) {
                                            if (this.state.element) {
                                                linkUtils.update(this.state.linkHref, this.state.element);
                                            } else {
                                                linkUtils.create(this.state.linkHref);
                                            }
                            
                                            editor.fire('actionPerformed', this);
                                        }
                            
                                        // We need to cancelExclusive with the bound parameters in case the button is used
                                        // inside another in exclusive mode (such is the case of the link button)
                                        this.props.cancelExclusive();
                                    }
                                });
                            
                                AlloyEditor.Buttons[ButtonLinkEdit.key] = AlloyEditor.ButtonLinkEdit = ButtonLinkEdit;
                            }());