text: ﻿/**
   * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
   * For licensing, see LICENSE.md or http://ckeditor.com/license
   */
  
  CKEDITOR.dialog.add( 'a11yHelp', function( editor ) {
  	var lang = editor.lang.a11yhelp,
  		coreLang = editor.lang.common.keyboard,
  		id = CKEDITOR.tools.getNextId();
  
  	// CharCode <-> KeyChar.
  	var keyMap = {
  		8: coreLang[ 8 ],
  		9: lang.tab,
  		13: coreLang[ 13 ],
  		16: coreLang[ 16 ],
  		17: coreLang[ 17 ],
  		18: coreLang[ 18 ],
  		19: lang.pause,
  		20: lang.capslock,
  		27: lang.escape,
  		33: lang.pageUp,
  		34: lang.pageDown,
  		35: coreLang[ 35 ],
  		36: coreLang[ 36 ],
  		37: lang.leftArrow,
  		38: lang.upArrow,
  		39: lang.rightArrow,
  		40: lang.downArrow,
  		45: lang.insert,
  		46: coreLang[ 46 ],
  		91: lang.leftWindowKey,
  		92: lang.rightWindowKey,
  		93: lang.selectKey,
  		96: lang.numpad0,
  		97: lang.numpad1,
  		98: lang.numpad2,
  		99: lang.numpad3,
  		100: lang.numpad4,
  		101: lang.numpad5,
  		102: lang.numpad6,
  		103: lang.numpad7,
  		104: lang.numpad8,
  		105: lang.numpad9,
  		106: lang.multiply,
  		107: lang.add,
  		109: lang.subtract,
  		110: lang.decimalPoint,
  		111: lang.divide,
  		112: lang.f1,
  		113: lang.f2,
  		114: lang.f3,
  		115: lang.f4,
  		116: lang.f5,
  		117: lang.f6,
  		118: lang.f7,
  		119: lang.f8,
  		120: lang.f9,
  		121: lang.f10,
  		122: lang.f11,
  		123: lang.f12,
  		144: lang.numLock,
  		145: lang.scrollLock,
  		186: lang.semiColon,
  		187: lang.equalSign,
  		188: lang.comma,
  		189: lang.dash,
  		190: lang.period,
  		191: lang.forwardSlash,
  		192: lang.graveAccent,
  		219: lang.openBracket,
  		220: lang.backSlash,
  		221: lang.closeBracket,
  		222: lang.singleQuote
  	};
  
  	// Modifier keys override.
  	keyMap[ CKEDITOR.ALT ] = coreLang[ 18 ];
  	keyMap[ CKEDITOR.SHIFT ] = coreLang[ 16 ];
  	keyMap[ CKEDITOR.CTRL ] = CKEDITOR.env.mac ? coreLang[ 224 ] : coreLang[ 17 ];
  
  	// Sort in desc.
  	var modifiers = [ CKEDITOR.ALT, CKEDITOR.SHIFT, CKEDITOR.CTRL ];
  
  	function representKeyStroke( keystroke ) {
  		var quotient, modifier,
  			presentation = [];
  		for ( var i = 0; i < modifiers.length; i++ ) {
  			modifier = modifiers[ i ];
  			quotient = keystroke / modifiers[ i ];
  			if ( quotient > 1 && quotient <= 2 ) {
  				keystroke -= modifier;
  				presentation.push( keyMap[ modifier ] );
  			}
  		}
  
  		presentation.push( keyMap[ keystroke ] || String.fromCharCode( keystroke ) );
  
  		return presentation.join( '+' );
  	}
  
  	var variablesPattern = /\$\{(.*?)\}/g,
  		replaceVariables = function( match, name ) {
  			var keystrokeCode = editor.getCommandKeystroke( name );
  
  			// Return the keystroke representation or leave match untouched
  			// if there's no keystroke for such command.
  			return keystrokeCode ? representKeyStroke( keystrokeCode ) : match;
  		};
  
  	// Create the help list directly from lang file entries.
  	function buildHelpContents() {
  		var pageTpl = '<div class="cke_accessibility_legend" role="document" aria-labelledby="' + id + '_arialbl" tabIndex="-1">%1</div>' +
  				'<span id="' + id + '_arialbl" class="cke_voice_label">' + lang.contents + ' </span>',
  			sectionTpl = '<h1>%1</h1><dl>%2</dl>',
  			itemTpl = '<dt>%1</dt><dd>%2</dd>';
  
  		var pageHtml = [],
  			sections = lang.legend,
  			sectionLength = sections.length;
  
  		for ( var i = 0; i < sectionLength; i++ ) {
  			var section = sections[ i ],
  				sectionHtml = [],
  				items = section.items,
  				itemsLength = items.length;
  
  			for ( var j = 0; j < itemsLength; j++ ) {
  				var item = items[ j ],
  					// (http://dev.ckeditor.com/ticket/16980) There should be a different hotkey shown in Commands on Edge browser.
  					itemLegend = CKEDITOR.env.edge && item.legendEdge ? item.legendEdge : item.legend;
  
  				itemLegend = itemLegend.replace( variablesPattern, replaceVariables );
  
  				// (http://dev.ckeditor.com/ticket/9765) If some commands haven't been replaced in the legend,
  				// most likely their keystrokes are unavailable and we shouldn't script
  				// them in our help list.
  				if ( itemLegend.match( variablesPattern ) ) {
  					continue;
  				}
  
  				sectionHtml.push( itemTpl.replace( '%1', item.name ).replace( '%2', itemLegend ) );
  			}
  
  			pageHtml.push( sectionTpl.replace( '%1', section.name ).replace( '%2', sectionHtml.join( '' ) ) );
  		}
  
  		return pageTpl.replace( '%1', pageHtml.join( '' ) );
  	}
  
  	return {
  		title: lang.title,
  		minWidth: 600,
  		minHeight: 400,
  		contents: [ {
  			id: 'info',
  			label: editor.lang.common.generalTab,
  			expand: true,
  			elements: [
  				{
  					type: 'html',
  					id: 'legends',
  					style: 'white-space:normal;',
  					focus: function() {
  						this.getElement().focus();
  					},
  					html: buildHelpContents() + '<style type="text/css">' +
  						'.cke_accessibility_legend' +
  						'{' +
  							'width:600px;' +
  							'height:400px;' +
  							'padding-right:5px;' +
  							'overflow-y:auto;' +
  							'overflow-x:hidden;' +
  						'}' +
  						// Some adjustments are to be done for Quirks to work "properly" (http://dev.ckeditor.com/ticket/5757)
  						'.cke_browser_quirks .cke_accessibility_legend,' +
  						'{' +
  							'height:390px' +
  						'}' +
  						// Override non-wrapping white-space rule in reset css.
  						'.cke_accessibility_legend *' +
  						'{' +
  							'white-space:normal;' +
  						'}' +
  						'.cke_accessibility_legend h1' +
  						'{' +
  							'font-size: 20px;' +
  							'border-bottom: 1px solid #AAA;' +
  							'margin: 5px 0px 15px;' +
  						'}' +
  						'.cke_accessibility_legend dl' +
  						'{' +
  							'margin-left: 5px;' +
  						'}' +
  						'.cke_accessibility_legend dt' +
  						'{' +
  							'font-size: 13px;' +
  							'font-weight: bold;' +
  						'}' +
  						'.cke_accessibility_legend dd' +
  						'{' +
  							'margin:10px' +
  						'}' +
  						'</style>'
  				}
  			]
  		} ],
  		buttons: [ CKEDITOR.dialog.cancelButton ]
  	};
  } );
  