_source/core/command.js

   1 /*\r
   2 Copyright (c) 2003-2009, CKSource - Frederico Knabben. All rights reserved.\r
   3 For licensing, see LICENSE.html or http://ckeditor.com/license\r
   4 */\r
   5 \r
   6 CKEDITOR.command = function( editor, commandDefinition )\r
   7 {\r
   8         this.uiItems = [];\r
   9 \r
  10         this.exec = function( data )\r
  11         {\r
  12                 if ( this.state == CKEDITOR.TRISTATE_DISABLED )\r
  13                         return false;\r
  14 \r
  15                 if( this.editorFocus )     // Give editor focus if necessary (#4355).\r
  16                         editor.focus();\r
  17 \r
  18                 return ( commandDefinition.exec.call( this, editor, data ) !== false );\r
  19         };\r
  20 \r
  21         CKEDITOR.tools.extend( this, commandDefinition,\r
  22                 // Defaults\r
  23                 {\r
  24                         modes : { wysiwyg : 1 },\r
  25                         editorFocus : true,\r
  26                         state : CKEDITOR.TRISTATE_OFF\r
  27                 });\r
  28 \r
  29         // Call the CKEDITOR.event constructor to initialize this instance.\r
  30         CKEDITOR.event.call( this );\r
  31 };\r
  32 \r
  33 CKEDITOR.command.prototype =\r
  34 {\r
  35         enable : function()\r
  36         {\r
  37                 if ( this.state == CKEDITOR.TRISTATE_DISABLED )\r
  38                         this.setState( ( !this.preserveState || ( typeof this.previousState == 'undefined' ) ) ? CKEDITOR.TRISTATE_OFF : this.previousState );\r
  39         },\r
  40 \r
  41         disable : function()\r
  42         {\r
  43                 this.setState( CKEDITOR.TRISTATE_DISABLED );\r
  44         },\r
  45 \r
  46         setState : function( newState )\r
  47         {\r
  48                 // Do nothing if there is no state change.\r
  49                 if ( this.state == newState )\r
  50                         return false;\r
  51 \r
  52                 this.previousState = this.state;\r
  53 \r
  54                 // Set the new state.\r
  55                 this.state = newState;\r
  56 \r
  57                 // Fire the "state" event, so other parts of the code can react to the\r
  58                 // change.\r
  59                 this.fire( 'state' );\r
  60 \r
  61                 return true;\r
  62         },\r
  63 \r
  64         toggleState : function()\r
  65         {\r
  66                 if ( this.state == CKEDITOR.TRISTATE_OFF )\r
  67                         this.setState( CKEDITOR.TRISTATE_ON );\r
  68                 else if ( this.state == CKEDITOR.TRISTATE_ON )\r
  69                         this.setState( CKEDITOR.TRISTATE_OFF );\r
  70         }\r
  71 };\r
  72 \r
  73 CKEDITOR.event.implementOn( CKEDITOR.command.prototype, true );\r