_source/plugins/button/plugin.js

   1 /*\r
   2 Copyright (c) 2003-2011, 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.plugins.add( 'button',\r
   7 {\r
   8         beforeInit : function( editor )\r
   9         {\r
  10                 editor.ui.addHandler( CKEDITOR.UI_BUTTON, CKEDITOR.ui.button.handler );\r
  11         }\r
  12 });\r
  13 \r
  14 /**\r
  15  * Button UI element.\r
  16  * @constant\r
  17  * @example\r
  18  */\r
  19 CKEDITOR.UI_BUTTON = 1;\r
  20 \r
  21 /**\r
  22  * Represents a button UI element. This class should not be called directly. To\r
  23  * create new buttons use {@link CKEDITOR.ui.prototype.addButton} instead.\r
  24  * @constructor\r
  25  * @param {Object} definition The button definition.\r
  26  * @example\r
  27  */\r
  28 CKEDITOR.ui.button = function( definition )\r
  29 {\r
  30         // Copy all definition properties to this object.\r
  31         CKEDITOR.tools.extend( this, definition,\r
  32                 // Set defaults.\r
  33                 {\r
  34                         title           : definition.label,\r
  35                         className       : definition.className || ( definition.command && 'cke_button_' + definition.command ) || '',\r
  36                         click           : definition.click || function( editor )\r
  37                                 {\r
  38                                         editor.execCommand( definition.command );\r
  39                                 }\r
  40                 });\r
  41 \r
  42         this._ = {};\r
  43 };\r
  44 \r
  45 /**\r
  46  * Transforms a button definition in a {@link CKEDITOR.ui.button} instance.\r
  47  * @type Object\r
  48  * @example\r
  49  */\r
  50 CKEDITOR.ui.button.handler =\r
  51 {\r
  52         create : function( definition )\r
  53         {\r
  54                 return new CKEDITOR.ui.button( definition );\r
  55         }\r
  56 };\r
  57 \r
  58 /**\r
  59  * Handles a button click.\r
  60  * @private\r
  61  */\r
  62 CKEDITOR.ui.button._ =\r
  63 {\r
  64         instances : [],\r
  65 \r
  66         keydown : function( index, ev )\r
  67         {\r
  68                 var instance = CKEDITOR.ui.button._.instances[ index ];\r
  69 \r
  70                 if ( instance.onkey )\r
  71                 {\r
  72                         ev = new CKEDITOR.dom.event( ev );\r
  73                         return ( instance.onkey( instance, ev.getKeystroke() ) !== false );\r
  74                 }\r
  75         },\r
  76 \r
  77         focus : function( index, ev )\r
  78         {\r
  79                 var instance = CKEDITOR.ui.button._.instances[ index ],\r
  80                         retVal;\r
  81 \r
  82                 if ( instance.onfocus )\r
  83                         retVal = ( instance.onfocus( instance, new CKEDITOR.dom.event( ev ) ) !== false );\r
  84 \r
  85                 // FF2: prevent focus event been bubbled up to editor container, which caused unexpected editor focus.\r
  86                 if ( CKEDITOR.env.gecko && CKEDITOR.env.version < 10900 )\r
  87                         ev.preventBubble();\r
  88                 return retVal;\r
  89         }\r
  90 };\r
  91 \r
  92 ( function()\r
  93 {\r
  94         var keydownFn = CKEDITOR.tools.addFunction( CKEDITOR.ui.button._.keydown, CKEDITOR.ui.button._ ),\r
  95                 focusFn = CKEDITOR.tools.addFunction( CKEDITOR.ui.button._.focus, CKEDITOR.ui.button._ );\r
  96 \r
  97 CKEDITOR.ui.button.prototype =\r
  98 {\r
  99         canGroup : true,\r
 100 \r
 101         /**\r
 102          * Renders the button.\r
 103          * @param {CKEDITOR.editor} editor The editor instance which this button is\r
 104          *              to be used by.\r
 105          * @param {Array} output The output array to which append the HTML relative\r
 106          *              to this button.\r
 107          * @example\r
 108          */\r
 109         render : function( editor, output )\r
 110         {\r
 111                 var env = CKEDITOR.env,\r
 112                         id = this._.id = CKEDITOR.tools.getNextId(),\r
 113                         classes = '',\r
 114                         command = this.command, // Get the command name.\r
 115                         clickFn,\r
 116                         index;\r
 117 \r
 118                 this._.editor = editor;\r
 119 \r
 120                 var instance =\r
 121                 {\r
 122                         id : id,\r
 123                         button : this,\r
 124                         editor : editor,\r
 125                         focus : function()\r
 126                         {\r
 127                                 var element = CKEDITOR.document.getById( id );\r
 128                                 element.focus();\r
 129                         },\r
 130                         execute : function()\r
 131                         {\r
 132                                 this.button.click( editor );\r
 133                         }\r
 134                 };\r
 135 \r
 136                 instance.clickFn = clickFn = CKEDITOR.tools.addFunction( instance.execute, instance );\r
 137 \r
 138                 instance.index = index = CKEDITOR.ui.button._.instances.push( instance ) - 1;\r
 139 \r
 140                 // Indicate a mode sensitive button.\r
 141                 if ( this.modes )\r
 142                 {\r
 143                         var modeStates = {};\r
 144                         editor.on( 'beforeModeUnload', function()\r
 145                                 {\r
 146                                         modeStates[ editor.mode ] = this._.state;\r
 147                                 }, this );\r
 148 \r
 149                         editor.on( 'mode', function()\r
 150                                 {\r
 151                                         var mode = editor.mode;\r
 152                                         // Restore saved button state.\r
 153                                         this.setState( this.modes[ mode ] ?\r
 154                                                 modeStates[ mode ] != undefined ? modeStates[ mode ] :\r
 155                                                         CKEDITOR.TRISTATE_OFF : CKEDITOR.TRISTATE_DISABLED );\r
 156                                 }, this);\r
 157                 }\r
 158                 else if ( command )\r
 159                 {\r
 160                         // Get the command instance.\r
 161                         command = editor.getCommand( command );\r
 162 \r
 163                         if ( command )\r
 164                         {\r
 165                                 command.on( 'state', function()\r
 166                                         {\r
 167                                                 this.setState( command.state );\r
 168                                         }, this);\r
 169 \r
 170                                 classes += 'cke_' + (\r
 171                                         command.state == CKEDITOR.TRISTATE_ON ? 'on' :\r
 172                                         command.state == CKEDITOR.TRISTATE_DISABLED ? 'disabled' :\r
 173                                         'off' );\r
 174                         }\r
 175                 }\r
 176 \r
 177                 if ( !command )\r
 178                         classes += 'cke_off';\r
 179 \r
 180                 if ( this.className )\r
 181                         classes += ' ' + this.className;\r
 182 \r
 183                 output.push(\r
 184                         '<span class="cke_button' + ( this.icon && this.icon.indexOf( '.png' ) == -1 ? ' cke_noalphafix' : '' ) + '">',\r
 185                         '<a id="', id, '"' +\r
 186                                 ' class="', classes, '"',\r
 187                                 env.gecko && env.version >= 10900 && !env.hc  ? '' : '" href="javascript:void(\''+ ( this.title || '' ).replace( "'", '' )+ '\')"',\r
 188                                 ' title="', this.title, '"' +\r
 189                                 ' tabindex="-1"' +\r
 190                                 ' hidefocus="true"' +\r
 191                             ' role="button"' +\r
 192                                 ' aria-labelledby="' + id + '_label"' +\r
 193                                 ( this.hasArrow ?  ' aria-haspopup="true"' : '' ) );\r
 194 \r
 195                 // Some browsers don't cancel key events in the keydown but in the\r
 196                 // keypress.\r
 197                 // TODO: Check if really needed for Gecko+Mac.\r
 198                 if ( env.opera || ( env.gecko && env.mac ) )\r
 199                 {\r
 200                         output.push(\r
 201                                 ' onkeypress="return false;"' );\r
 202                 }\r
 203 \r
 204                 // With Firefox, we need to force the button to redraw, otherwise it\r
 205                 // will remain in the focus state.\r
 206                 if ( env.gecko )\r
 207                 {\r
 208                         output.push(\r
 209                                 ' onblur="this.style.cssText = this.style.cssText;"' );\r
 210                 }\r
 211 \r
 212                 output.push(\r
 213                                         ' onkeydown="return CKEDITOR.tools.callFunction(', keydownFn, ', ', index, ', event);"' +\r
 214                                         ' onfocus="return CKEDITOR.tools.callFunction(', focusFn,', ', index, ', event);"' +\r
 215                                 ' onclick="CKEDITOR.tools.callFunction(', clickFn, ', this); return false;">' +\r
 216                                         '<span class="cke_icon"' );\r
 217 \r
 218                 if ( this.icon )\r
 219                 {\r
 220                         var offset = ( this.iconOffset || 0 ) * -16;\r
 221                         output.push( ' style="background-image:url(', CKEDITOR.getUrl( this.icon ), ');background-position:0 ' + offset + 'px;"' );\r
 222                 }\r
 223 \r
 224                 output.push(\r
 225                                         '>&nbsp;</span>' +\r
 226                                         '<span id="', id, '_label" class="cke_label">', this.label, '</span>' );\r
 227 \r
 228                 if ( this.hasArrow )\r
 229                 {\r
 230                         output.push(\r
 231                                         '<span class="cke_buttonarrow">'\r
 232                                         // BLACK DOWN-POINTING TRIANGLE\r
 233                                         + ( CKEDITOR.env.hc ? '&#9660;' : '&nbsp;' )\r
 234                                         + '</span>' );\r
 235                 }\r
 236 \r
 237                 output.push(\r
 238                         '</a>',\r
 239                         '</span>' );\r
 240 \r
 241                 if ( this.onRender )\r
 242                         this.onRender();\r
 243 \r
 244                 return instance;\r
 245         },\r
 246 \r
 247         setState : function( state )\r
 248         {\r
 249                 if ( this._.state == state )\r
 250                         return false;\r
 251 \r
 252                 this._.state = state;\r
 253 \r
 254                 var element = CKEDITOR.document.getById( this._.id );\r
 255 \r
 256                 if ( element )\r
 257                 {\r
 258                         element.setState( state );\r
 259                         state == CKEDITOR.TRISTATE_DISABLED ?\r
 260                                 element.setAttribute( 'aria-disabled', true ) :\r
 261                                 element.removeAttribute( 'aria-disabled' );\r
 262 \r
 263                         state == CKEDITOR.TRISTATE_ON ?\r
 264                                 element.setAttribute( 'aria-pressed', true ) :\r
 265                                 element.removeAttribute( 'aria-pressed' );\r
 266 \r
 267                         return true;\r
 268                 }\r
 269                 else\r
 270                         return false;\r
 271         }\r
 272 };\r
 273 \r
 274 })();\r
 275 \r
 276 /**\r
 277  * Adds a button definition to the UI elements list.\r
 278  * @param {String} name The button name.\r
 279  * @param {Object} definition The button definition.\r
 280  * @example\r
 281  * editorInstance.ui.addButton( 'MyBold',\r
 282  *     {\r
 283  *         label : 'My Bold',\r
 284  *         command : 'bold'\r
 285  *     });\r
 286  */\r
 287 CKEDITOR.ui.prototype.addButton = function( name, definition )\r
 288 {\r
 289         this.add( name, CKEDITOR.UI_BUTTON, definition );\r
 290 };\r
 291 \r
 292 CKEDITOR.on( 'reset', function()\r
 293         {\r
 294                 CKEDITOR.ui.button._.instances = [];\r
 295         });\r