1 /*
  2 Copyright (c) 2003-2012, CKSource - Frederico Knabben. All rights reserved.
  3 For licensing, see LICENSE.html or http://ckeditor.com/license
  4 */
  5 
  6 (function()
  7 {
  8 	function protectFormStyles( formElement )
  9 	{
 10 		if ( !formElement || formElement.type != CKEDITOR.NODE_ELEMENT || formElement.getName() != 'form' )
 11 			return [];
 12 
 13 		var hijackRecord = [],
 14 			hijackNames = [ 'style', 'className' ];
 15 		for ( var i = 0 ; i < hijackNames.length ; i++ )
 16 		{
 17 			var name = hijackNames[i];
 18 			var $node = formElement.$.elements.namedItem( name );
 19 			if ( $node )
 20 			{
 21 				var hijackNode = new CKEDITOR.dom.element( $node );
 22 				hijackRecord.push( [ hijackNode, hijackNode.nextSibling ] );
 23 				hijackNode.remove();
 24 			}
 25 		}
 26 
 27 		return hijackRecord;
 28 	}
 29 
 30 	function restoreFormStyles( formElement, hijackRecord )
 31 	{
 32 		if ( !formElement || formElement.type != CKEDITOR.NODE_ELEMENT || formElement.getName() != 'form' )
 33 			return;
 34 
 35 		if ( hijackRecord.length > 0 )
 36 		{
 37 			for ( var i = hijackRecord.length - 1 ; i >= 0 ; i-- )
 38 			{
 39 				var node = hijackRecord[i][0];
 40 				var sibling = hijackRecord[i][1];
 41 				if ( sibling )
 42 					node.insertBefore( sibling );
 43 				else
 44 					node.appendTo( formElement );
 45 			}
 46 		}
 47 	}
 48 
 49 	function saveStyles( element, isInsideEditor )
 50 	{
 51 		var data = protectFormStyles( element );
 52 		var retval = {};
 53 
 54 		var $element = element.$;
 55 
 56 		if ( !isInsideEditor )
 57 		{
 58 			retval[ 'class' ] = $element.className || '';
 59 			$element.className = '';
 60 		}
 61 
 62 		retval.inline = $element.style.cssText || '';
 63 		if ( !isInsideEditor )		// Reset any external styles that might interfere. (#2474)
 64 			$element.style.cssText = 'position: static; overflow: visible';
 65 
 66 		restoreFormStyles( data );
 67 		return retval;
 68 	}
 69 
 70 	function restoreStyles( element, savedStyles )
 71 	{
 72 		var data = protectFormStyles( element );
 73 		var $element = element.$;
 74 		if ( 'class' in savedStyles )
 75 			$element.className = savedStyles[ 'class' ];
 76 		if ( 'inline' in savedStyles )
 77 			$element.style.cssText = savedStyles.inline;
 78 		restoreFormStyles( data );
 79 	}
 80 
 81 	function refreshCursor( editor )
 82 	{
 83 		// Refresh all editor instances on the page (#5724).
 84 		var all = CKEDITOR.instances;
 85 		for ( var i in all )
 86 		{
 87 			var one = all[ i ];
 88 			if ( one.mode == 'wysiwyg' && !one.readOnly )
 89 			{
 90 				var body = one.document.getBody();
 91 				// Refresh 'contentEditable' otherwise
 92 				// DOM lifting breaks design mode. (#5560)
 93 				body.setAttribute( 'contentEditable', false );
 94 				body.setAttribute( 'contentEditable', true );
 95 			}
 96 		}
 97 
 98 		if ( editor.focusManager.hasFocus )
 99 		{
100 			editor.toolbox.focus();
101 			editor.focus();
102 		}
103 	}
104 
105 	/**
106 	 * Adding an iframe shim to this element, OR removing the existing one if already applied.
107 	 * Note: This will only affect IE version below 7.
108 	 */
109 	 function createIframeShim( element )
110 	{
111 		if ( !CKEDITOR.env.ie || CKEDITOR.env.version > 6 )
112 			return null;
113 
114 		var shim = CKEDITOR.dom.element.createFromHtml( '<iframe frameborder="0" tabindex="-1"' +
115 					' src="javascript:' +
116 					   'void((function(){' +
117 						   'document.open();' +
118 						   ( CKEDITOR.env.isCustomDomain() ? 'document.domain=\'' + this.getDocument().$.domain + '\';' : '' ) +
119 						   'document.close();' +
120 					   '})())"' +
121 					' style="display:block;position:absolute;z-index:-1;' +
122 					'progid:DXImageTransform.Microsoft.Alpha(opacity=0);' +
123 					'"></iframe>' );
124 		return element.append( shim, true );
125 	}
126 
127 	CKEDITOR.plugins.add( 'maximize',
128 	{
129 		init : function( editor )
130 		{
131 			var lang = editor.lang;
132 			var mainDocument = CKEDITOR.document,
133 				mainWindow = mainDocument.getWindow();
134 
135 			// Saved selection and scroll position for the editing area.
136 			var savedSelection,
137 				savedScroll;
138 
139 			// Saved scroll position for the outer window.
140 			var outerScroll;
141 
142 			var shim;
143 
144 			// Saved resize handler function.
145 			function resizeHandler()
146 			{
147 				var viewPaneSize = mainWindow.getViewPaneSize();
148 				shim && shim.setStyles( { width : viewPaneSize.width + 'px', height : viewPaneSize.height + 'px' } );
149 				editor.resize( viewPaneSize.width, viewPaneSize.height, null, true );
150 			}
151 
152 			// Retain state after mode switches.
153 			var savedState = CKEDITOR.TRISTATE_OFF;
154 
155 			editor.addCommand( 'maximize',
156 				{
157 					// Disabled on iOS (#8307).
158 					modes : { wysiwyg : !CKEDITOR.env.iOS, source : !CKEDITOR.env.iOS },
159 					readOnly : 1,
160 					editorFocus : false,
161 					exec : function()
162 					{
163 						var container = editor.container.getChild( 1 );
164 						var contents = editor.getThemeSpace( 'contents' );
165 
166 						// Save current selection and scroll position in editing area.
167 						if ( editor.mode == 'wysiwyg' )
168 						{
169 							var selection = editor.getSelection();
170 							savedSelection = selection && selection.getRanges();
171 							savedScroll = mainWindow.getScrollPosition();
172 						}
173 						else
174 						{
175 							var $textarea = editor.textarea.$;
176 							savedSelection = !CKEDITOR.env.ie && [ $textarea.selectionStart, $textarea.selectionEnd ];
177 							savedScroll = [ $textarea.scrollLeft, $textarea.scrollTop ];
178 						}
179 
180 						if ( this.state == CKEDITOR.TRISTATE_OFF )		// Go fullscreen if the state is off.
181 						{
182 							// Add event handler for resizing.
183 							mainWindow.on( 'resize', resizeHandler );
184 
185 							// Save the scroll bar position.
186 							outerScroll = mainWindow.getScrollPosition();
187 
188 							// Save and reset the styles for the entire node tree.
189 							var currentNode = editor.container;
190 							while ( ( currentNode = currentNode.getParent() ) )
191 							{
192 								currentNode.setCustomData( 'maximize_saved_styles', saveStyles( currentNode ) );
193 								currentNode.setStyle( 'z-index', editor.config.baseFloatZIndex - 1 );
194 							}
195 							contents.setCustomData( 'maximize_saved_styles', saveStyles( contents, true ) );
196 							container.setCustomData( 'maximize_saved_styles', saveStyles( container, true ) );
197 
198 							// Hide scroll bars.
199 							var styles =
200 								{
201 									overflow : CKEDITOR.env.webkit ? '' : 'hidden',		// #6896
202 									width : 0,
203 									height : 0
204 								};
205 
206 							mainDocument.getDocumentElement().setStyles( styles );
207 							!CKEDITOR.env.gecko && mainDocument.getDocumentElement().setStyle( 'position', 'fixed' );
208 							!( CKEDITOR.env.gecko && CKEDITOR.env.quirks ) && mainDocument.getBody().setStyles( styles );
209 
210 							// Scroll to the top left (IE needs some time for it - #4923).
211 							CKEDITOR.env.ie ?
212 								setTimeout( function() { mainWindow.$.scrollTo( 0, 0 ); }, 0 ) :
213 								mainWindow.$.scrollTo( 0, 0 );
214 
215 							// Resize and move to top left.
216 							// Special treatment for FF Quirks (#7284)
217 							container.setStyle( 'position', CKEDITOR.env.gecko && CKEDITOR.env.quirks ? 'fixed' : 'absolute' );
218 							container.$.offsetLeft;			// SAFARI BUG: See #2066.
219 							container.setStyles(
220 								{
221 									'z-index' : editor.config.baseFloatZIndex - 1,
222 									left : '0px',
223 									top : '0px'
224 								} );
225 
226 							shim =  createIframeShim( container );		// IE6 select element penetration when maximized. (#4459)
227 
228 							// Add cke_maximized class before resize handle since that will change things sizes (#5580)
229 							container.addClass( 'cke_maximized' );
230 
231 							resizeHandler();
232 
233 							// Still not top left? Fix it. (Bug #174)
234 							var offset = container.getDocumentPosition();
235 							container.setStyles(
236 								{
237 									left : ( -1 * offset.x ) + 'px',
238 									top : ( -1 * offset.y ) + 'px'
239 								} );
240 
241 							// Fixing positioning editor chrome in Firefox break design mode. (#5149)
242 							CKEDITOR.env.gecko && refreshCursor( editor );
243 
244 						}
245 						else if ( this.state == CKEDITOR.TRISTATE_ON )	// Restore from fullscreen if the state is on.
246 						{
247 							// Remove event handler for resizing.
248 							mainWindow.removeListener( 'resize', resizeHandler );
249 
250 							// Restore CSS styles for the entire node tree.
251 							var editorElements = [ contents, container ];
252 							for ( var i = 0 ; i < editorElements.length ; i++ )
253 							{
254 								restoreStyles( editorElements[i], editorElements[i].getCustomData( 'maximize_saved_styles' ) );
255 								editorElements[i].removeCustomData( 'maximize_saved_styles' );
256 							}
257 
258 							currentNode = editor.container;
259 							while ( ( currentNode = currentNode.getParent() ) )
260 							{
261 								restoreStyles( currentNode, currentNode.getCustomData( 'maximize_saved_styles' ) );
262 								currentNode.removeCustomData( 'maximize_saved_styles' );
263 							}
264 
265 							// Restore the window scroll position.
266 							CKEDITOR.env.ie ?
267 								setTimeout( function() { mainWindow.$.scrollTo( outerScroll.x, outerScroll.y ); }, 0 ) :
268 								mainWindow.$.scrollTo( outerScroll.x, outerScroll.y );
269 
270 							// Remove cke_maximized class.
271 							container.removeClass( 'cke_maximized' );
272 
273 							// Webkit requires a re-layout on editor chrome. (#6695)
274 							if ( CKEDITOR.env.webkit )
275 							{
276 								container.setStyle( 'display', 'inline' );
277 								setTimeout( function(){ container.setStyle( 'display', 'block' ); }, 0 );
278 							}
279 
280 							if ( shim )
281 							{
282 								shim.remove();
283 								shim = null;
284 							}
285 
286 							// Emit a resize event, because this time the size is modified in
287 							// restoreStyles.
288 							editor.fire( 'resize' );
289 						}
290 
291 						this.toggleState();
292 
293 						// Toggle button label.
294 						var button = this.uiItems[ 0 ];
295 						// Only try to change the button if it exists (#6166)
296 						if( button )
297 						{
298 							var label = ( this.state == CKEDITOR.TRISTATE_OFF )
299 								? lang.maximize : lang.minimize;
300 							var buttonNode = editor.element.getDocument().getById( button._.id );
301 							buttonNode.getChild( 1 ).setHtml( label );
302 							buttonNode.setAttribute( 'title', label );
303 							buttonNode.setAttribute( 'href', 'javascript:void("' + label + '");' );
304 						}
305 
306 						// Restore selection and scroll position in editing area.
307 						if ( editor.mode == 'wysiwyg' )
308 						{
309 							if ( savedSelection )
310 							{
311 								// Fixing positioning editor chrome in Firefox break design mode. (#5149)
312 								CKEDITOR.env.gecko && refreshCursor( editor );
313 
314 								editor.getSelection().selectRanges(savedSelection);
315 								var element = editor.getSelection().getStartElement();
316 								element && element.scrollIntoView( true );
317 							}
318 
319 							else
320 								mainWindow.$.scrollTo( savedScroll.x, savedScroll.y );
321 						}
322 						else
323 						{
324 							if ( savedSelection )
325 							{
326 								$textarea.selectionStart = savedSelection[0];
327 								$textarea.selectionEnd = savedSelection[1];
328 							}
329 							$textarea.scrollLeft = savedScroll[0];
330 							$textarea.scrollTop = savedScroll[1];
331 						}
332 
333 						savedSelection = savedScroll = null;
334 						savedState = this.state;
335 					},
336 					canUndo : false
337 				} );
338 
339 			editor.ui.addButton( 'Maximize',
340 				{
341 					label : lang.maximize,
342 					command : 'maximize'
343 				} );
344 
345 			// Restore the command state after mode change, unless it has been changed to disabled (#6467)
346 			editor.on( 'mode', function()
347 				{
348 					var command = editor.getCommand( 'maximize' );
349 					command.setState( command.state == CKEDITOR.TRISTATE_DISABLED ? CKEDITOR.TRISTATE_DISABLED : savedState );
350 				}, null, null, 100 );
351 		}
352 	} );
353 })();
354