X-Git-Url: https://scm.cri.ensmp.fr/git/ckeditor.git/blobdiff_plain/256592bf803e851aa7fc953e08a6e9e58d970f8c..871bad8291b6dbc29d489d95d185458caab25158:/skins/ckeditor/_source/plugins/clipboard/plugin.js

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+/*
+Copyright (c) 2003-2011, CKSource - Frederico Knabben. All rights reserved.
+For licensing, see LICENSE.html or http://ckeditor.com/license
+*/
+
+/**
+ * @file Clipboard support
+ */
+
+(function()
+{
+	// Tries to execute any of the paste, cut or copy commands in IE. Returns a
+	// boolean indicating that the operation succeeded.
+	var execIECommand = function( editor, command )
+	{
+		var doc = editor.document,
+			body = doc.getBody();
+
+		var enabled = 0;
+		var onExec = function()
+		{
+			enabled = 1;
+		};
+
+		// The following seems to be the only reliable way to detect that
+		// clipboard commands are enabled in IE. It will fire the
+		// onpaste/oncut/oncopy events only if the security settings allowed
+		// the command to execute.
+		body.on( command, onExec );
+
+		// IE6/7: document.execCommand has problem to paste into positioned element.
+		( CKEDITOR.env.version > 7 ? doc.$ : doc.$.selection.createRange() ) [ 'execCommand' ]( command );
+
+		body.removeListener( command, onExec );
+
+		return enabled;
+	};
+
+	// Attempts to execute the Cut and Copy operations.
+	var tryToCutCopy =
+		CKEDITOR.env.ie ?
+			function( editor, type )
+			{
+				return execIECommand( editor, type );
+			}
+		:		// !IE.
+			function( editor, type )
+			{
+				try
+				{
+					// Other browsers throw an error if the command is disabled.
+					return editor.document.$.execCommand( type, false, null );
+				}
+				catch( e )
+				{
+					return false;
+				}
+			};
+
+	// A class that represents one of the cut or copy commands.
+	var cutCopyCmd = function( type )
+	{
+		this.type = type;
+		this.canUndo = this.type == 'cut';		// We can't undo copy to clipboard.
+		this.startDisabled = true;
+	};
+
+	cutCopyCmd.prototype =
+	{
+		exec : function( editor, data )
+		{
+			this.type == 'cut' && fixCut( editor );
+
+			var success = tryToCutCopy( editor, this.type );
+
+			if ( !success )
+				alert( editor.lang.clipboard[ this.type + 'Error' ] );		// Show cutError or copyError.
+
+			return success;
+		}
+	};
+
+	// Paste command.
+	var pasteCmd =
+	{
+		canUndo : false,
+
+		exec :
+			CKEDITOR.env.ie ?
+				function( editor )
+				{
+					// Prevent IE from pasting at the begining of the document.
+					editor.focus();
+
+					if ( !editor.document.getBody().fire( 'beforepaste' )
+						 && !execIECommand( editor, 'paste' ) )
+					{
+						editor.fire( 'pasteDialog' );
+						return false;
+					}
+				}
+			:
+				function( editor )
+				{
+					try
+					{
+						if ( !editor.document.getBody().fire( 'beforepaste' )
+							 && !editor.document.$.execCommand( 'Paste', false, null ) )
+						{
+							throw 0;
+						}
+					}
+					catch ( e )
+					{
+						setTimeout( function()
+							{
+								editor.fire( 'pasteDialog' );
+							}, 0 );
+						return false;
+					}
+				}
+	};
+
+	// Listens for some clipboard related keystrokes, so they get customized.
+	var onKey = function( event )
+	{
+		if ( this.mode != 'wysiwyg' )
+			return;
+
+		switch ( event.data.keyCode )
+		{
+			// Paste
+			case CKEDITOR.CTRL + 86 :		// CTRL+V
+			case CKEDITOR.SHIFT + 45 :		// SHIFT+INS
+
+				var body = this.document.getBody();
+
+				// Simulate 'beforepaste' event for all none-IEs.
+				if ( !CKEDITOR.env.ie && body.fire( 'beforepaste' ) )
+					event.cancel();
+				// Simulate 'paste' event for Opera/Firefox2.
+				else if ( CKEDITOR.env.opera
+						 || CKEDITOR.env.gecko && CKEDITOR.env.version < 10900 )
+					body.fire( 'paste' );
+				return;
+
+			// Cut
+			case CKEDITOR.CTRL + 88 :		// CTRL+X
+			case CKEDITOR.SHIFT + 46 :		// SHIFT+DEL
+
+				// Save Undo snapshot.
+				var editor = this;
+				this.fire( 'saveSnapshot' );		// Save before paste
+				setTimeout( function()
+					{
+						editor.fire( 'saveSnapshot' );		// Save after paste
+					}, 0 );
+		}
+	};
+
+	function cancel( evt ) { evt.cancel(); }
+
+	// Allow to peek clipboard content by redirecting the
+	// pasting content into a temporary bin and grab the content of it.
+	function getClipboardData( evt, mode, callback )
+	{
+		var doc = this.document;
+
+		// Avoid recursions on 'paste' event or consequent paste too fast. (#5730)
+		if ( doc.getById( 'cke_pastebin' ) )
+			return;
+
+		// If the browser supports it, get the data directly
+		if ( mode == 'text' && evt.data && evt.data.$.clipboardData )
+		{
+			// evt.data.$.clipboardData.types contains all the flavours in Mac's Safari, but not on windows.
+			var plain = evt.data.$.clipboardData.getData( 'text/plain' );
+			if ( plain )
+			{
+				evt.data.preventDefault();
+				callback( plain );
+				return;
+			}
+		}
+
+		var sel = this.getSelection(),
+			range = new CKEDITOR.dom.range( doc );
+
+		// Create container to paste into
+		var pastebin = new CKEDITOR.dom.element( mode == 'text' ? 'textarea' : CKEDITOR.env.webkit ? 'body' : 'div', doc );
+		pastebin.setAttribute( 'id', 'cke_pastebin' );
+		// Safari requires a filler node inside the div to have the content pasted into it. (#4882)
+		CKEDITOR.env.webkit && pastebin.append( doc.createText( '\xa0' ) );
+		doc.getBody().append( pastebin );
+
+		pastebin.setStyles(
+			{
+				position : 'absolute',
+				// Position the bin exactly at the position of the selected element
+				// to avoid any subsequent document scroll.
+				top : sel.getStartElement().getDocumentPosition().y + 'px',
+				width : '1px',
+				height : '1px',
+				overflow : 'hidden'
+			});
+
+		// It's definitely a better user experience if we make the paste-bin pretty unnoticed
+		// by pulling it off the screen.
+		pastebin.setStyle( this.config.contentsLangDirection == 'ltr' ? 'left' : 'right', '-1000px' );
+
+		var bms = sel.createBookmarks();
+
+		this.on( 'selectionChange', cancel, null, null, 0 );
+
+		// Turn off design mode temporarily before give focus to the paste bin.
+		if ( mode == 'text' )
+			pastebin.$.focus();
+		else
+		{
+			range.setStartAt( pastebin, CKEDITOR.POSITION_AFTER_START );
+			range.setEndAt( pastebin, CKEDITOR.POSITION_BEFORE_END );
+			range.select( true );
+		}
+
+		var editor  = this;
+		// Wait a while and grab the pasted contents
+		window.setTimeout( function()
+		{
+			mode == 'text' && CKEDITOR.env.gecko && editor.focusGrabber.focus();
+			pastebin.remove();
+			editor.removeListener( 'selectionChange', cancel );
+
+			// Grab the HTML contents.
+			// We need to look for a apple style wrapper on webkit it also adds
+			// a div wrapper if you copy/paste the body of the editor.
+			// Remove hidden div and restore selection.
+			var bogusSpan;
+			pastebin = ( CKEDITOR.env.webkit
+						 && ( bogusSpan = pastebin.getFirst() )
+						 && ( bogusSpan.is && bogusSpan.hasClass( 'Apple-style-span' ) ) ?
+							bogusSpan : pastebin );
+
+			sel.selectBookmarks( bms );
+			callback( pastebin[ 'get' + ( mode == 'text' ? 'Value' : 'Html' ) ]() );
+		}, 0 );
+	}
+
+	// Cutting off control type element in IE standards breaks the selection entirely. (#4881)
+	function fixCut( editor )
+	{
+		if ( !CKEDITOR.env.ie || CKEDITOR.env.quirks )
+			return;
+
+		var sel = editor.getSelection();
+		var control;
+		if( ( sel.getType() == CKEDITOR.SELECTION_ELEMENT ) && ( control = sel.getSelectedElement() ) )
+		{
+			var range = sel.getRanges()[ 0 ];
+			var dummy = editor.document.createText( '' );
+			dummy.insertBefore( control );
+			range.setStartBefore( dummy );
+			range.setEndAfter( control );
+			sel.selectRanges( [ range ] );
+
+			// Clear up the fix if the paste wasn't succeeded.
+			setTimeout( function()
+			{
+				// Element still online?
+				if ( control.getParent() )
+				{
+					dummy.remove();
+					sel.selectElement( control );
+				}
+			}, 0 );
+		}
+	}
+
+	var depressBeforeEvent;
+	function stateFromNamedCommand( command, editor )
+	{
+		// IE Bug: queryCommandEnabled('paste') fires also 'beforepaste(copy/cut)',
+		// guard to distinguish from the ordinary sources( either
+		// keyboard paste or execCommand ) (#4874).
+		CKEDITOR.env.ie && ( depressBeforeEvent = 1 );
+
+		var retval = CKEDITOR.TRISTATE_OFF;
+		try { retval = editor.document.$.queryCommandEnabled( command ) ? CKEDITOR.TRISTATE_OFF : CKEDITOR.TRISTATE_DISABLED; }catch( er ){}
+
+		depressBeforeEvent = 0;
+		return retval;
+	}
+
+	var inReadOnly;
+	function setToolbarStates()
+	{
+		if ( this.mode != 'wysiwyg' )
+			return;
+
+		this.getCommand( 'cut' ).setState( inReadOnly ? CKEDITOR.TRISTATE_DISABLED : stateFromNamedCommand( 'Cut', this ) );
+		this.getCommand( 'copy' ).setState( stateFromNamedCommand( 'Copy', this ) );
+		var pasteState = inReadOnly ? CKEDITOR.TRISTATE_DISABLED :
+						CKEDITOR.env.webkit ? CKEDITOR.TRISTATE_OFF : stateFromNamedCommand( 'Paste', this );
+		this.fire( 'pasteState', pasteState );
+	}
+
+	// Register the plugin.
+	CKEDITOR.plugins.add( 'clipboard',
+		{
+			requires : [ 'dialog', 'htmldataprocessor' ],
+			init : function( editor )
+			{
+				// Inserts processed data into the editor at the end of the
+				// events chain.
+				editor.on( 'paste', function( evt )
+					{
+						var data = evt.data;
+						if ( data[ 'html' ] )
+							editor.insertHtml( data[ 'html' ] );
+						else if ( data[ 'text' ] )
+							editor.insertText( data[ 'text' ] );
+
+						setTimeout( function () { editor.fire( 'afterPaste' ); }, 0 );
+
+					}, null, null, 1000 );
+
+				editor.on( 'pasteDialog', function( evt )
+					{
+						setTimeout( function()
+						{
+							// Open default paste dialog.
+							editor.openDialog( 'paste' );
+						}, 0 );
+					});
+
+				editor.on( 'pasteState', function( evt )
+					{
+						editor.getCommand( 'paste' ).setState( evt.data );
+					});
+
+				function addButtonCommand( buttonName, commandName, command, ctxMenuOrder )
+				{
+					var lang = editor.lang[ commandName ];
+
+					editor.addCommand( commandName, command );
+					editor.ui.addButton( buttonName,
+						{
+							label : lang,
+							command : commandName
+						});
+
+					// If the "menu" plugin is loaded, register the menu item.
+					if ( editor.addMenuItems )
+					{
+						editor.addMenuItem( commandName,
+							{
+								label : lang,
+								command : commandName,
+								group : 'clipboard',
+								order : ctxMenuOrder
+							});
+					}
+				}
+
+				addButtonCommand( 'Cut', 'cut', new cutCopyCmd( 'cut' ), 1 );
+				addButtonCommand( 'Copy', 'copy', new cutCopyCmd( 'copy' ), 4 );
+				addButtonCommand( 'Paste', 'paste', pasteCmd, 8 );
+
+				CKEDITOR.dialog.add( 'paste', CKEDITOR.getUrl( this.path + 'dialogs/paste.js' ) );
+
+				editor.on( 'key', onKey, editor );
+
+				// We'll be catching all pasted content in one line, regardless of whether the
+				// it's introduced by a document command execution (e.g. toolbar buttons) or
+				// user paste behaviors. (e.g. Ctrl-V)
+				editor.on( 'contentDom', function()
+				{
+					var body = editor.document.getBody();
+					body.on( CKEDITOR.env.webkit ? 'paste' : 'beforepaste', function( evt )
+						{
+							if ( depressBeforeEvent )
+								return;
+
+							// Fire 'beforePaste' event so clipboard flavor get customized
+							// by other plugins.
+							var eventData =  { mode : 'html' };
+							editor.fire( 'beforePaste', eventData );
+
+							getClipboardData.call( editor, evt, eventData.mode, function ( data )
+							{
+								// The very last guard to make sure the
+								// paste has successfully happened.
+								if ( !( data = CKEDITOR.tools.trim( data.replace( /<span[^>]+data-cke-bookmark[^<]*?<\/span>/ig,'' ) ) ) )
+									return;
+
+								var dataTransfer = {};
+								dataTransfer[ eventData.mode ] = data;
+								editor.fire( 'paste', dataTransfer );
+							} );
+						});
+
+					// Dismiss the (wrong) 'beforepaste' event fired on context menu open. (#7953)
+					body.on( 'contextmenu', function()
+					{
+						depressBeforeEvent = 1;
+						setTimeout( function() { depressBeforeEvent = 0; }, 10 );
+					});
+
+					body.on( 'beforecut', function() { !depressBeforeEvent && fixCut( editor ); } );
+
+					body.on( 'mouseup', function(){ setTimeout( function(){ setToolbarStates.call( editor ); }, 0 ); }, editor );
+					body.on( 'keyup', setToolbarStates, editor );
+				});
+
+				// For improved performance, we're checking the readOnly state on selectionChange instead of hooking a key event for that.
+				editor.on( 'selectionChange', function( evt )
+				{
+					inReadOnly = evt.data.selection.getRanges()[ 0 ].checkReadOnly();
+					setToolbarStates.call( editor );
+				});
+
+				// If the "contextmenu" plugin is loaded, register the listeners.
+				if ( editor.contextMenu )
+				{
+					editor.contextMenu.addListener( function( element, selection )
+						{
+							var readOnly = selection.getRanges()[ 0 ].checkReadOnly();
+							return {
+								cut : !readOnly && stateFromNamedCommand( 'Cut', editor ),
+								copy : stateFromNamedCommand( 'Copy', editor ),
+								paste : !readOnly && ( CKEDITOR.env.webkit ? CKEDITOR.TRISTATE_OFF : stateFromNamedCommand( 'Paste', editor ) )
+							};
+						});
+				}
+			}
+		});
+})();
+
+/**
+ * Fired when a clipboard operation is about to be taken into the editor.
+ * Listeners can manipulate the data to be pasted before having it effectively
+ * inserted into the document.
+ * @name CKEDITOR.editor#paste
+ * @since 3.1
+ * @event
+ * @param {String} [data.html] The HTML data to be pasted. If not available, e.data.text will be defined.
+ * @param {String} [data.text] The plain text data to be pasted, available when plain text operations are to used. If not available, e.data.html will be defined.
+ */
+
+/**
+ * Internal event to open the Paste dialog
+ * @name CKEDITOR.editor#pasteDialog
+ * @event
+ */