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Filename : specialchar.js
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/**
 * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
 */

CKEDITOR.dialog.add( 'specialchar', function( editor ) {
	// Simulate "this" of a dialog for non-dialog events.
	// @type {CKEDITOR.dialog}
	var dialog,
		lang = editor.lang.specialchar,
		focusedNode,
		onChoice,
		onClick,
		onBlur,
		onFocus,
		onKeydown;


	onChoice = function( evt ) {
		var target, value;
		if ( evt.data )
			target = evt.data.getTarget();
		else
			target = new CKEDITOR.dom.element( evt );

		if ( target.getName() == 'a' && ( value = target.getChild( 0 ).getHtml() ) ) {
			target.removeClass( 'cke_light_background' );
			dialog.hide();

			// We must use "insertText" here to keep text styled.
			var span = editor.document.createElement( 'span' );
			span.setHtml( value );
			editor.insertText( span.getText() );
		}
	};

	onClick = CKEDITOR.tools.addFunction( onChoice );

	onFocus = function( evt, target ) {
		var value;
		target = target || evt.data.getTarget();

		if ( target.getName() == 'span' )
			target = target.getParent();

		if ( target.getName() == 'a' && ( value = target.getChild( 0 ).getHtml() ) ) {
			// Trigger blur manually if there is focused node.
			if ( focusedNode )
				onBlur( null, focusedNode );

			var htmlPreview = dialog.getContentElement( 'info', 'htmlPreview' ).getElement();

			dialog.getContentElement( 'info', 'charPreview' ).getElement().setHtml( value );
			htmlPreview.setHtml( CKEDITOR.tools.htmlEncode( value ) );
			target.getParent().addClass( 'cke_light_background' );

			// Memorize focused node.
			focusedNode = target;
		}
	};

	onBlur = function( evt, target ) {
		target = target || evt.data.getTarget();

		if ( target.getName() == 'span' )
			target = target.getParent();

		if ( target.getName() == 'a' ) {
			dialog.getContentElement( 'info', 'charPreview' ).getElement().setHtml( '&nbsp;' );
			dialog.getContentElement( 'info', 'htmlPreview' ).getElement().setHtml( '&nbsp;' );
			target.getParent().removeClass( 'cke_light_background' );

			focusedNode = undefined;
		}
	};

	onKeydown = CKEDITOR.tools.addFunction( function( ev ) {
		ev = new CKEDITOR.dom.event( ev );

		// Get an Anchor element.
		var element = ev.getTarget();
		var relative, nodeToMove;
		var keystroke = ev.getKeystroke(),
			rtl = editor.lang.dir == 'rtl';

		switch ( keystroke ) {
			// UP-ARROW
			case 38:
				// relative is TR
				if ( ( relative = element.getParent().getParent().getPrevious() ) ) {
					nodeToMove = relative.getChild( [ element.getParent().getIndex(), 0 ] );
					nodeToMove.focus();
					onBlur( null, element );
					onFocus( null, nodeToMove );
				}
				ev.preventDefault();
				break;
				// DOWN-ARROW
			case 40:
				// relative is TR
				if ( ( relative = element.getParent().getParent().getNext() ) ) {
					nodeToMove = relative.getChild( [ element.getParent().getIndex(), 0 ] );
					if ( nodeToMove && nodeToMove.type == 1 ) {
						nodeToMove.focus();
						onBlur( null, element );
						onFocus( null, nodeToMove );
					}
				}
				ev.preventDefault();
				break;
				// SPACE
				// ENTER is already handled as onClick
			case 32:
				onChoice( { data: ev } );
				ev.preventDefault();
				break;

				// RIGHT-ARROW
			case rtl ? 37 : 39:
				// relative is TD
				if ( ( relative = element.getParent().getNext() ) ) {
					nodeToMove = relative.getChild( 0 );
					if ( nodeToMove.type == 1 ) {
						nodeToMove.focus();
						onBlur( null, element );
						onFocus( null, nodeToMove );
						ev.preventDefault( true );
					} else {
						onBlur( null, element );
					}
				}
				// relative is TR
				else if ( ( relative = element.getParent().getParent().getNext() ) ) {
					nodeToMove = relative.getChild( [ 0, 0 ] );
					if ( nodeToMove && nodeToMove.type == 1 ) {
						nodeToMove.focus();
						onBlur( null, element );
						onFocus( null, nodeToMove );
						ev.preventDefault( true );
					} else {
						onBlur( null, element );
					}
				}
				break;

				// LEFT-ARROW
			case rtl ? 39 : 37:
				// relative is TD
				if ( ( relative = element.getParent().getPrevious() ) ) {
					nodeToMove = relative.getChild( 0 );
					nodeToMove.focus();
					onBlur( null, element );
					onFocus( null, nodeToMove );
					ev.preventDefault( true );
				}
				// relative is TR
				else if ( ( relative = element.getParent().getParent().getPrevious() ) ) {
					nodeToMove = relative.getLast().getChild( 0 );
					nodeToMove.focus();
					onBlur( null, element );
					onFocus( null, nodeToMove );
					ev.preventDefault( true );
				} else {
					onBlur( null, element );
				}
				break;
			default:
				// Do not stop not handled events.
				return;
		}
	} );

	return {
		title: lang.title,
		minWidth: 430,
		minHeight: 280,
		buttons: [ CKEDITOR.dialog.cancelButton ],
		charColumns: 17,
		onLoad: function() {
			var columns = this.definition.charColumns,
				chars = editor.config.specialChars;

			var charsTableLabel = CKEDITOR.tools.getNextId() + '_specialchar_table_label';
			var html = [ '<table role="listbox" aria-labelledby="' + charsTableLabel + '"' +
				' style="width: 320px; height: 100%; border-collapse: separate;"' +
				' align="center" cellspacing="2" cellpadding="2" border="0">' ];

			var i = 0,
				size = chars.length,
				character, charDesc;

			while ( i < size ) {
				html.push( '<tr role="presentation">' );

				for ( var j = 0; j < columns; j++, i++ ) {
					if ( ( character = chars[ i ] ) ) {
						charDesc = '';

						if ( character instanceof Array ) {
							charDesc = character[ 1 ];
							character = character[ 0 ];
						} else {
							var _tmpName = character.replace( '&', '' ).replace( ';', '' ).replace( '#', '' );

							// Use character in case description unavailable.
							charDesc = lang[ _tmpName ] || character;
						}

						var charLabelId = 'cke_specialchar_label_' + i + '_' + CKEDITOR.tools.getNextNumber();

						html.push( '<td class="cke_dark_background" style="cursor: default" role="presentation">' +
							'<a href="javascript: void(0);" role="option"' +
							' aria-posinset="' + ( i + 1 ) + '"', ' aria-setsize="' + size + '"', ' aria-labelledby="' + charLabelId + '"', ' class="cke_specialchar" title="', CKEDITOR.tools.htmlEncode( charDesc ), '"' +
							' onkeydown="CKEDITOR.tools.callFunction( ' + onKeydown + ', event, this )"' +
							' onclick="CKEDITOR.tools.callFunction(' + onClick + ', this); return false;"' +
							' tabindex="-1">' +
							'<span style="margin: 0 auto;cursor: inherit">' +
							character +
							'</span>' +
							'<span class="cke_voice_label" id="' + charLabelId + '">' +
							charDesc +
							'</span></a></td>'
						);
					}

				}
				html.push( '</tr>' );
			}

			html.push( '</tbody></table>', '<span id="' + charsTableLabel + '" class="cke_voice_label">' + lang.options + '</span>' );

			this.getContentElement( 'info', 'charContainer' ).getElement().setHtml( html.join( '' ) );
		},
		contents: [ {
			id: 'info',
			label: editor.lang.common.generalTab,
			title: editor.lang.common.generalTab,
			padding: 0,
			align: 'top',
			elements: [ {
				type: 'hbox',
				align: 'top',
				widths: [ '320px', '90px' ],
				children: [ {
					type: 'html',
					id: 'charContainer',
					html: '',
					onMouseover: onFocus,
					onMouseout: onBlur,
					focus: function() {
						var firstChar = this.getElement().getElementsByTag( 'a' ).getItem( 0 );
						setTimeout( function() {
							firstChar.focus();
							onFocus( null, firstChar );
						}, 0 );
					},
					onShow: function() {
						var firstChar = this.getElement().getChild( [ 0, 0, 0, 0, 0 ] );
						setTimeout( function() {
							firstChar.focus();
							onFocus( null, firstChar );
						}, 0 );
					},
					onLoad: function( event ) {
						dialog = event.sender;
					}
				},
				{
					type: 'hbox',
					align: 'top',
					widths: [ '100%' ],
					children: [ {
						type: 'vbox',
						align: 'top',
						children: [
							{
								type: 'html',
								html: '<div></div>'
							},
							{
								type: 'html',
								id: 'charPreview',
								className: 'cke_dark_background',
								style: 'border:1px solid #eeeeee;font-size:28px;height:40px;width:70px;padding-top:9px;font-family:\'Microsoft Sans Serif\',Arial,Helvetica,Verdana;text-align:center;',
								html: '<div>&nbsp;</div>'
							},
							{
								type: 'html',
								id: 'htmlPreview',
								className: 'cke_dark_background',
								style: 'border:1px solid #eeeeee;font-size:14px;height:20px;width:70px;padding-top:2px;font-family:\'Microsoft Sans Serif\',Arial,Helvetica,Verdana;text-align:center;',
								html: '<div>&nbsp;</div>'
							}
						]
					} ]
				} ]
			} ]
		} ]
	};
} );