[6779] | 1 | /*
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| 2 | Copyright (c) 2003-2009, CKSource - Frederico Knabben. All rights reserved.
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| 3 | For licensing, see LICENSE.html or http://ckeditor.com/license
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| 4 | */
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| 5 |
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| 6 | /**
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| 7 | * @file Clipboard support
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| 8 | */
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| 9 |
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| 10 | (function()
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| 11 | {
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| 12 | // Tries to execute any of the paste, cut or copy commands in IE. Returns a
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| 13 | // boolean indicating that the operation succeeded.
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| 14 | var execIECommand = function( editor, command )
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| 15 | {
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| 16 | var doc = editor.document,
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| 17 | body = doc.getBody();
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| 18 |
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| 19 | var enabled = false;
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| 20 | var onExec = function()
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| 21 | {
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| 22 | enabled = true;
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| 23 | };
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| 24 |
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| 25 | // The following seems to be the only reliable way to detect that
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| 26 | // clipboard commands are enabled in IE. It will fire the
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| 27 | // onpaste/oncut/oncopy events only if the security settings allowed
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| 28 | // the command to execute.
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| 29 | body.on( command, onExec );
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| 30 |
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| 31 | doc.$.execCommand( command );
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| 32 |
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| 33 | body.removeListener( command, onExec );
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| 34 |
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| 35 | return enabled;
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| 36 | };
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| 37 |
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| 38 | // Attempts to execute the Cut and Copy operations.
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| 39 | var tryToCutCopy =
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| 40 | CKEDITOR.env.ie ?
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| 41 | function( editor, type )
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| 42 | {
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| 43 | return execIECommand( editor, type );
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| 44 | }
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| 45 | : // !IE.
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| 46 | function( editor, type )
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| 47 | {
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| 48 | try
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| 49 | {
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| 50 | // Other browsers throw an error if the command is disabled.
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| 51 | return editor.document.$.execCommand( type );
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| 52 | }
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| 53 | catch( e )
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| 54 | {
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| 55 | return false;
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| 56 | }
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| 57 | };
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| 58 |
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| 59 | // A class that represents one of the cut or copy commands.
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| 60 | var cutCopyCmd = function( type )
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| 61 | {
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| 62 | this.type = type;
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| 63 | this.canUndo = ( this.type == 'cut' ); // We can't undo copy to clipboard.
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| 64 | };
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| 65 |
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| 66 | cutCopyCmd.prototype =
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| 67 | {
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| 68 | exec : function( editor, data )
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| 69 | {
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| 70 | var success = tryToCutCopy( editor, this.type );
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| 71 |
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| 72 | if ( !success )
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| 73 | alert( editor.lang.clipboard[ this.type + 'Error' ] ); // Show cutError or copyError.
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| 74 |
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| 75 | return success;
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| 76 | }
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| 77 | };
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| 78 |
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| 79 | // Paste command.
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| 80 | var pasteCmd =
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| 81 | CKEDITOR.env.ie ?
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| 82 | {
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| 83 | exec : function( editor, data )
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| 84 | {
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| 85 | // Prevent IE from pasting at the begining of the document.
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| 86 | editor.focus();
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| 87 |
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| 88 | if ( !editor.fire( 'beforePaste' )
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| 89 | && !execIECommand( editor, 'paste' ) )
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| 90 | {
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| 91 | editor.openDialog( 'paste' );
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| 92 | }
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| 93 | }
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| 94 | }
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| 95 | :
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| 96 | {
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| 97 | exec : function( editor )
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| 98 | {
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| 99 | try
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| 100 | {
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| 101 | if ( !editor.fire( 'beforePaste' )
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| 102 | && !editor.document.$.execCommand( 'Paste', false, null ) )
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| 103 | {
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| 104 | throw 0;
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| 105 | }
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| 106 | }
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| 107 | catch ( e )
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| 108 | {
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| 109 | // Open the paste dialog.
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| 110 | editor.openDialog( 'paste' );
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| 111 | }
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| 112 | }
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| 113 | };
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| 114 |
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| 115 | // Listens for some clipboard related keystrokes, so they get customized.
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| 116 | var onKey = function( event )
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| 117 | {
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| 118 | switch ( event.data.keyCode )
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| 119 | {
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| 120 | // Paste
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| 121 | case CKEDITOR.CTRL + 86 : // CTRL+V
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| 122 | case CKEDITOR.SHIFT + 45 : // SHIFT+INS
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| 123 |
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| 124 | var editor = this;
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| 125 | editor.fire( 'saveSnapshot' ); // Save before paste
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| 126 |
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| 127 | if ( editor.fire( 'beforePaste' ) )
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| 128 | event.cancel();
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| 129 |
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| 130 | setTimeout( function()
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| 131 | {
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| 132 | editor.fire( 'saveSnapshot' ); // Save after paste
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| 133 | }, 0 );
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| 134 | return;
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| 135 |
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| 136 | // Cut
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| 137 | case CKEDITOR.CTRL + 88 : // CTRL+X
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| 138 | case CKEDITOR.SHIFT + 46 : // SHIFT+DEL
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| 139 |
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| 140 | // Save Undo snapshot.
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| 141 | editor = this;
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| 142 | editor.fire( 'saveSnapshot' ); // Save before paste
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| 143 | setTimeout( function()
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| 144 | {
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| 145 | editor.fire( 'saveSnapshot' ); // Save after paste
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| 146 | }, 0 );
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| 147 | }
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| 148 | };
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| 149 |
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| 150 | // Register the plugin.
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| 151 | CKEDITOR.plugins.add( 'clipboard',
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| 152 | {
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| 153 | init : function( editor )
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| 154 | {
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| 155 | function addButtonCommand( buttonName, commandName, command, ctxMenuOrder )
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| 156 | {
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| 157 | var lang = editor.lang[ commandName ];
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| 158 |
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| 159 | editor.addCommand( commandName, command );
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| 160 | editor.ui.addButton( buttonName,
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| 161 | {
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| 162 | label : lang,
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| 163 | command : commandName
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| 164 | });
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| 165 |
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| 166 | // If the "menu" plugin is loaded, register the menu item.
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| 167 | if ( editor.addMenuItems )
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| 168 | {
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| 169 | editor.addMenuItem( commandName,
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| 170 | {
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| 171 | label : lang,
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| 172 | command : commandName,
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| 173 | group : 'clipboard',
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| 174 | order : ctxMenuOrder
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| 175 | });
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| 176 | }
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| 177 | }
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| 178 |
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| 179 | addButtonCommand( 'Cut', 'cut', new cutCopyCmd( 'cut' ), 1 );
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| 180 | addButtonCommand( 'Copy', 'copy', new cutCopyCmd( 'copy' ), 4 );
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| 181 | addButtonCommand( 'Paste', 'paste', pasteCmd, 8 );
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| 182 |
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| 183 | CKEDITOR.dialog.add( 'paste', CKEDITOR.getUrl( this.path + 'dialogs/paste.js' ) );
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| 184 |
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| 185 | editor.on( 'key', onKey, editor );
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| 186 |
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| 187 | // If the "contextmenu" plugin is loaded, register the listeners.
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| 188 | if ( editor.contextMenu )
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| 189 | {
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| 190 | function stateFromNamedCommand( command )
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| 191 | {
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| 192 | return editor.document.$.queryCommandEnabled( command ) ? CKEDITOR.TRISTATE_OFF : CKEDITOR.TRISTATE_DISABLED;
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| 193 | }
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| 194 |
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| 195 | editor.contextMenu.addListener( function()
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| 196 | {
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| 197 | return {
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| 198 | cut : stateFromNamedCommand( 'Cut' ),
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| 199 |
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| 200 | // Browser bug: 'Cut' has the correct states for both Copy and Cut.
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| 201 | copy : stateFromNamedCommand( 'Cut' ),
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| 202 | paste : CKEDITOR.env.webkit ? CKEDITOR.TRISTATE_OFF : stateFromNamedCommand( 'Paste' )
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| 203 | };
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| 204 | });
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| 205 | }
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| 206 | }
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| 207 | });
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| 208 | })();
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