httemplate/elements/fckeditor/editor/plugins/autogrow/fckplugin.js

   1 /*\r
   2  * FCKeditor - The text editor for Internet - http://www.fckeditor.net\r
   3  * Copyright (C) 2003-2010 Frederico Caldeira Knabben\r
   4  *\r
   5  * == BEGIN LICENSE ==\r
   6  *\r
   7  * Licensed under the terms of any of the following licenses at your\r
   8  * choice:\r
   9  *\r
  10  *  - GNU General Public License Version 2 or later (the "GPL")\r
  11  *    http://www.gnu.org/licenses/gpl.html\r
  12  *\r
  13  *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")\r
  14  *    http://www.gnu.org/licenses/lgpl.html\r
  15  *\r
  16  *  - Mozilla Public License Version 1.1 or later (the "MPL")\r
  17  *    http://www.mozilla.org/MPL/MPL-1.1.html\r
  18  *\r
  19  * == END LICENSE ==\r
  20  *\r
  21  * Plugin: automatically resizes the editor until a configurable maximun\r
  22  * height (FCKConfig.AutoGrowMax), based on its contents.\r
  23  */\r
  24 \r
  25 var FCKAutoGrow = {\r
  26         MIN_HEIGHT : window.frameElement.offsetHeight,\r
  27 \r
  28         Check : function()\r
  29         {\r
  30                 var delta = FCKAutoGrow.GetHeightDelta() ;\r
  31                 if ( delta != 0 )\r
  32                 {\r
  33                         var newHeight = window.frameElement.offsetHeight + delta ;\r
  34 \r
  35                         newHeight = FCKAutoGrow.GetEffectiveHeight( newHeight ) ;\r
  36 \r
  37                         if ( newHeight != window.frameElement.height )\r
  38                         {\r
  39                                 window.frameElement.style.height = newHeight + "px" ;\r
  40 \r
  41                                 // Gecko browsers use an onresize handler to update the innermost\r
  42                                 // IFRAME's height. If the document is modified before the onresize\r
  43                                 // is triggered, the plugin will miscalculate the new height. Thus,\r
  44                                 // forcibly trigger onresize. #1336\r
  45                                 if ( typeof window.onresize == 'function' )\r
  46                                 {\r
  47                                         window.onresize() ;\r
  48                                 }\r
  49                         }\r
  50                 }\r
  51         },\r
  52 \r
  53         CheckEditorStatus : function( sender, status )\r
  54         {\r
  55                 if ( status == FCK_STATUS_COMPLETE )\r
  56                         FCKAutoGrow.Check() ;\r
  57         },\r
  58 \r
  59         GetEffectiveHeight : function( height )\r
  60         {\r
  61                 if ( height < FCKAutoGrow.MIN_HEIGHT )\r
  62                         height = FCKAutoGrow.MIN_HEIGHT;\r
  63                 else\r
  64                 {\r
  65                         var max = FCKConfig.AutoGrowMax;\r
  66                         if ( max && max > 0 && height > max )\r
  67                                 height = max;\r
  68                 }\r
  69 \r
  70                 return height;\r
  71         },\r
  72 \r
  73         GetHeightDelta : function()\r
  74         {\r
  75                 var oInnerDoc = FCK.EditorDocument ;\r
  76 \r
  77                 var iFrameHeight ;\r
  78                 var iInnerHeight ;\r
  79 \r
  80                 if ( FCKBrowserInfo.IsIE )\r
  81                 {\r
  82                         iFrameHeight = FCK.EditorWindow.frameElement.offsetHeight ;\r
  83                         iInnerHeight = oInnerDoc.body.scrollHeight ;\r
  84                 }\r
  85                 else\r
  86                 {\r
  87                         iFrameHeight = FCK.EditorWindow.innerHeight ;\r
  88                         iInnerHeight = oInnerDoc.body.offsetHeight +\r
  89                                 ( parseInt( FCKDomTools.GetCurrentElementStyle( oInnerDoc.body, 'margin-top' ), 10 ) || 0 ) +\r
  90                                 ( parseInt( FCKDomTools.GetCurrentElementStyle( oInnerDoc.body, 'margin-bottom' ), 10 ) || 0 ) ;\r
  91                 }\r
  92 \r
  93                 return iInnerHeight - iFrameHeight ;\r
  94         },\r
  95 \r
  96         SetListeners : function()\r
  97         {\r
  98                 if ( FCK.EditMode != FCK_EDITMODE_WYSIWYG )\r
  99                         return ;\r
 100 \r
 101                 FCK.EditorWindow.attachEvent( 'onscroll', FCKAutoGrow.Check ) ;\r
 102                 FCK.EditorDocument.attachEvent( 'onkeyup', FCKAutoGrow.Check ) ;\r
 103         }\r
 104 };\r
 105 \r
 106 FCK.AttachToOnSelectionChange( FCKAutoGrow.Check ) ;\r
 107 \r
 108 if ( FCKBrowserInfo.IsIE )\r
 109         FCK.Events.AttachEvent( 'OnAfterSetHTML', FCKAutoGrow.SetListeners ) ;\r
 110 \r
 111 FCK.Events.AttachEvent( 'OnStatusChange', FCKAutoGrow.CheckEditorStatus ) ;\r