[Sommaire] [Imprimer]

   1  //
   2  // Created on: <14-Jul-2004 14:18:58 dl>
   3  //
   4  // SOFTWARE NAME: eZ publish
   5  // SOFTWARE RELEASE: 3.9.0
   6  // BUILD VERSION: 17785
   7  // COPYRIGHT NOTICE: Copyright (C) 1999-2006 eZ systems AS
   8  // SOFTWARE LICENSE: GNU General Public License v2.0
   9  // NOTICE: >
  10  //   This program is free software; you can redistribute it and/or
  11  //   modify it under the terms of version 2.0  of the GNU General
  12  //   Public License as published by the Free Software Foundation.
  13  //
  14  //   This program is distributed in the hope that it will be useful,
  15  //   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  //   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  //   GNU General Public License for more details.
  18  //
  19  //   You should have received a copy of version 2.0 of the GNU General
  20  //   Public License along with this program; if not, write to the Free
  21  //   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  22  //   MA 02110-1301, USA.
  23  //
  24  //
  25  
  26  /*! \file ezjslibdomsupport.js
  27  */
  28  
  29  /*!
  30      \brief
  31  
  32      Functions which works with HTMLElements:
  33          ezjslib_findHTMLChildTextNode,
  34          ezjslib_setTextToHTMLChildTextNode,
  35          ezjslib_removeHTMLChildTextNode,
  36          ezjslib_createHTMLChildTextNode,
  37          ezjslib_setHTMLNodeClassStyle,
  38          ezjslib_appendHTMLNodeClassStyle,
  39          ezjslib_getHTMLNodeById,
  40          ezjslib_getHTMLChildNodeByTag,
  41          ezjslib_getHTMLChildNodeByProperty,
  42      ezjslib_getStyleObject.
  43  */
  44  
  45  /*!
  46      Finds the text of \a node
  47  */
  48  function ezjslib_findHTMLChildTextNode( node )
  49  {
  50      return ezjslib_findHTMLChildNodeByType( node, 3 );
  51  }
  52  
  53  /*!
  54      Finds the image of \a node
  55  */
  56  function ezjslib_findHTMLChildImageNode( node )
  57  {
  58      return ezjslib_findHTMLChildNodeByType( node, 1 );
  59  }
  60  
  61  /*!
  62      Finds child node of \a node by \a type
  63  */
  64  function ezjslib_findHTMLChildNodeByType( node, type )
  65  {
  66      if( node )
  67      {
  68          for ( var i = 0; i < node.childNodes.length; i++ )
  69          {
  70              if ( node.childNodes[i].nodeType == type )
  71              {
  72                  return node.childNodes[i];
  73              }
  74          }
  75      }
  76  
  77      return null;
  78  }
  79  
  80  /*!
  81      Finds the text of \a node and replaces it with \a text
  82  */
  83  function ezjslib_setTextToHTMLChildTextNode( node, text )
  84  {
  85      var textNode = ezjslib_findHTMLChildTextNode( node );
  86      if( textNode != null )
  87      {
  88          textNode.data = text;
  89      }
  90  }
  91  
  92  /*!
  93  */
  94  function ezjslib_setImageSourceToHTMLChildImageNode( node, imageSource )
  95  {
  96      var imageNode = ezjslib_findHTMLChildImageNode( node );
  97      if( imageNode != null )
  98      {
  99          imageNode.src = imageSource;
 100      }
 101  }
 102  
 103  /*!
 104      Finds text of \a node and removes it
 105  */
 106  function ezjslib_removeHTMLChildTextNode( node )
 107  {
 108      ezjslib_removeHTMLChildNodeByType( node, 3 );
 109  }
 110  
 111  /*!
 112      Finds image of \a node and removes it
 113  */
 114  function ezjslib_removeHTMLChildImageNode( node )
 115  {
 116      ezjslib_removeHTMLChildNodeByType( node, 1 );
 117  }
 118  
 119  /*!
 120      Finds a child of \a node by \a type and removes it
 121  */
 122  function ezjslib_removeHTMLChildNodeByType( node, type )
 123  {
 124      var textNode = ezjslib_findHTMLChildNodeByType( node, type );
 125      if( textNode != null )
 126      {
 127          node.removeChild( textNode );
 128      }
 129  }
 130  
 131  /*!
 132      Creates and appends child text node with text \a text to node \a node
 133  */
 134  function ezjslib_createHTMLChildTextNode( node, text )
 135  {
 136      if ( node != null )
 137      {
 138          var textNode = document.createTextNode( text );
 139          node.appendChild( textNode );
 140      }
 141  }
 142  
 143  /*!
 144  */
 145  function  ezjslib_createHTMLChildImageNode( node, imageSource, imageWidth, imageHeight )
 146  {
 147      if ( node != null )
 148      {
 149          var imageNode = document.createElement( 'img' );
 150          imageNode.src = imageSource;
 151          if ( imageWidth )
 152              imageNode.width = imageWidth;
 153          if ( imageHeight )
 154              imageNode.height = imageHeight;
 155  
 156          node.appendChild( imageNode );
 157      }
 158  }
 159  
 160  /*!
 161      \return HTMLElement with id \a node_id
 162  */
 163  function ezjslib_getHTMLNodeById( node_id )
 164  {
 165      return document.getElementById( node_id );
 166  }
 167  
 168  /*!
 169      \return a FIRST child HTMLElement of \a node with tag \a tag
 170  */
 171  function ezjslib_getHTMLChildNodeByTag( node, tag )
 172  {
 173      for ( var i = 0; i < node.childNodes.length; ++i )
 174      {
 175          var child = node.childNodes[i];
 176  
 177          if ( child["tagName"] && child.tagName.toLowerCase() == tag )
 178          {
 179              return child;
 180          }
 181      }
 182  
 183      return null;
 184  }
 185  
 186  /*!
 187      \return a FIRST child HTMLElement of \a node with property name
 188      \a attrName and property value \a attrValue
 189  */
 190  function ezjslib_getHTMLChildNodeByProperty( node, propName, propValue )
 191  {
 192      if( node )
 193      {
 194          for ( var i = 0; i < node.childNodes.length; ++i )
 195          {
 196              var child   = node.childNodes[i];
 197              var value   = child[propName];
 198  
 199              if ( value && value == propValue )
 200              {
 201                  return child;
 202              }
 203          }
 204      }
 205  
 206      return null;
 207  }
 208  
 209  /*!
 210      Sets 'className' property of node \a node to value \a styleClassName
 211  */
 212  function ezjslib_setHTMLNodeClassStyle( node, styleClassName )
 213  {
 214      if ( node && styleClassName )
 215      {
 216          node['className'] = styleClassName;
 217      }
 218  }
 219  
 220  /*!
 221      Appends to 'className' property of node \a node the value \a styleClassName
 222  */
 223  function ezjslib_appendHTMLNodeClassStyle( node, styleClassName )
 224  {
 225      if ( node && styleClassName )
 226      {
 227          if ( node['className'] == '' )
 228              node['className'] = styleClassName;
 229          else
 230              node['className'] = node['className'] + ' ' + styleClassName;
 231      }
 232  }
 233  
 234  /*!
 235    Get the style object for the element with id objID
 236   */
 237  function ezjslib_getStyleObject( objID )
 238  {
 239      if( document.getElementById && document.getElementById( objID ) ) // DOM
 240      {
 241          return document.getElementById( objID ).style;
 242      }
 243      else if ( document.all && document.all( objID ) ) // IE
 244      {
 245          return document.all( objID ).style;
 246      }
 247      else if ( document.layers && document.layers[objID] )
 248      {
 249          return false; // Netscape 4.x Not currently supported.
 250      }
 251      else
 252      {
 253          return false;
 254      }
 255  }
 256  
 257  /*!
 258    Get the properties of the visible screen. Returns an object containing
 259    .ScrollX - The amount of pixels the page has been scrolled vertically
 260    .ScrollY - The amount of pixels the page has been scrolled horizontally
 261    .Height - The height of the browser window
 262    .Width - The width of the browser window.
 263  */
 264  function ezjslib_getScreenProperties()
 265  {
 266    // client width and height
 267    result = new Array();
 268    result.ScrollX = 0;
 269    result.ScrollY = 0;
 270    result.Height = 0;
 271    result.Width = 0;
 272  
 273    if( typeof( window.innerWidth ) == 'number' )
 274    {
 275      // all but IE
 276      result.Width = window.innerWidth;
 277      result.Height = window.innerHeight;
 278    }
 279    else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) )
 280    {
 281      // IE 6
 282      result.Width = document.documentElement.clientWidth;
 283      result.Height = document.documentElement.clientHeight;
 284    }
 285    else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) )
 286    {
 287      // IE 4
 288      result.Width = document.body.clientWidth;
 289      result.Height = document.body.clientHeight;
 290    }
 291  
 292    // offsets
 293    if( typeof( window.pageYOffset ) == 'number' )
 294    {
 295      // Netscape compliant
 296      result.ScrollY = window.pageYOffset;
 297      result.ScrollX = window.pageXOffset;
 298    }
 299    else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) )
 300    {
 301      // DOM
 302      result.ScrollY = document.body.scrollTop;
 303      result.ScrollX = document.body.scrollLeft;
 304    }
 305    else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) )
 306    {
 307      // IE6
 308      result.ScrollY = document.documentElement.scrollTop;
 309      result.ScrollX = document.documentElement.scrollLeft;
 310    }
 311  
 312    return result;
 313  }