[Sommaire] [Imprimer]

   1  /*
   2   * FCKeditor - The text editor for internet
   3   * Copyright (C) 2003-2006 Frederico Caldeira Knabben
   4   * 
   5   * Licensed under the terms of the GNU Lesser General Public License:
   6   *         http://www.opensource.org/licenses/lgpl-license.php
   7   * 
   8   * For further information visit:
   9   *         http://www.fckeditor.net/
  10   * 
  11   * "Support Open Source software. What about a donation today?"
  12   * 
  13   * File Name: fck_link.js
  14   *     Scripts related to the Link dialog window (see fck_link.html).
  15   * 
  16   * File Authors:
  17   *         Frederico Caldeira Knabben (fredck@fckeditor.net)
  18   *         Dominik Pesch ?dom? (empty selection patch) (d.pesch@11com7.de)
  19   */
  20  
  21  var oEditor        = window.parent.InnerDialogLoaded() ;
  22  var FCK            = oEditor.FCK ;
  23  var FCKLang        = oEditor.FCKLang ;
  24  var FCKConfig    = oEditor.FCKConfig ;
  25  
  26  //#### Dialog Tabs
  27  
  28  // Set the dialog tabs.
  29  window.parent.AddTab( 'Info', FCKLang.DlgLnkInfoTab ) ;
  30  
  31  if ( !FCKConfig.LinkDlgHideTarget )
  32      window.parent.AddTab( 'Target', FCKLang.DlgLnkTargetTab, true ) ;
  33  
  34  if ( FCKConfig.LinkUpload )
  35      window.parent.AddTab( 'Upload', FCKLang.DlgLnkUpload, true ) ;
  36  
  37  if ( !FCKConfig.LinkDlgHideAdvanced )
  38      window.parent.AddTab( 'Advanced', FCKLang.DlgAdvancedTag ) ;
  39  
  40  // Function called when a dialog tag is selected.
  41  function OnDialogTabChange( tabCode )
  42  {
  43      ShowE('divInfo'        , ( tabCode == 'Info' ) ) ;
  44      ShowE('divTarget'    , ( tabCode == 'Target' ) ) ;
  45      ShowE('divUpload'    , ( tabCode == 'Upload' ) ) ;
  46      ShowE('divAttribs'    , ( tabCode == 'Advanced' ) ) ;
  47  
  48      window.parent.SetAutoSize( true ) ;
  49  }
  50  
  51  //#### Regular Expressions library.
  52  var oRegex = new Object() ;
  53  
  54  oRegex.UriProtocol = new RegExp('') ;
  55  oRegex.UriProtocol.compile( '^(((http|https|ftp|news):\/\/)|mailto:)', 'gi' ) ;
  56  
  57  oRegex.UrlOnChangeProtocol = new RegExp('') ;
  58  oRegex.UrlOnChangeProtocol.compile( '^(http|https|ftp|news)://(?=.)', 'gi' ) ;
  59  
  60  oRegex.UrlOnChangeTestOther = new RegExp('') ;
  61  //oRegex.UrlOnChangeTestOther.compile( '^(javascript:|#|/)', 'gi' ) ;
  62  oRegex.UrlOnChangeTestOther.compile( '^((javascript:)|[#/\.])', 'gi' ) ; 
  63  
  64  oRegex.ReserveTarget = new RegExp('') ;
  65  oRegex.ReserveTarget.compile( '^_(blank|self|top|parent)$', 'i' ) ;
  66  
  67  oRegex.PopupUri = new RegExp('') ;
  68  oRegex.PopupUri.compile( "^javascript:void\\(\\s*window.open\\(\\s*'([^']+)'\\s*,\\s*(?:'([^']*)'|null)\\s*,\\s*'([^']*)'\\s*\\)\\s*\\)\\s*$" ) ;
  69  
  70  oRegex.PopupFeatures = new RegExp('') ;
  71  oRegex.PopupFeatures.compile( '(?:^|,)([^=]+)=(\\d+|yes|no)', 'gi' ) ;
  72  
  73  //#### Parser Functions
  74  
  75  var oParser = new Object() ;
  76  
  77  oParser.ParseEMailUrl = function( emailUrl )
  78  {
  79      // Initializes the EMailInfo object.
  80      var oEMailInfo = new Object() ;
  81      oEMailInfo.Address    = '' ;
  82      oEMailInfo.Subject    = '' ;
  83      oEMailInfo.Body        = '' ;
  84  
  85      var oParts = emailUrl.match( /^([^\?]+)\??(.+)?/ ) ;
  86      if ( oParts )
  87      {
  88          // Set the e-mail address.
  89          oEMailInfo.Address = oParts[1] ;
  90  
  91          // Look for the optional e-mail parameters.
  92          if ( oParts[2] )
  93          {
  94              var oMatch = oParts[2].match( /(^|&)subject=([^&]+)/i ) ;
  95              if ( oMatch ) oEMailInfo.Subject = unescape( oMatch[2] ) ;
  96  
  97              oMatch = oParts[2].match( /(^|&)body=([^&]+)/i ) ;
  98              if ( oMatch ) oEMailInfo.Body = unescape( oMatch[2] ) ;
  99          }
 100      }
 101  
 102      return oEMailInfo ;
 103  }
 104  
 105  oParser.CreateEMailUri = function( address, subject, body )
 106  {
 107      var sBaseUri = 'mailto:' + address ;
 108  
 109      var sParams = '' ;
 110  
 111      if ( subject.length > 0 )
 112          sParams = '?subject=' + escape( subject ) ;
 113  
 114      if ( body.length > 0 )
 115      {
 116          sParams += ( sParams.length == 0 ? '?' : '&' ) ;
 117          sParams += 'body=' + escape( body ) ;
 118      }
 119  
 120      return sBaseUri + sParams ;
 121  }
 122  
 123  //#### Initialization Code
 124  
 125  // oLink: The actual selected link in the editor.
 126  var oLink = FCK.Selection.MoveToAncestorNode( 'A' ) ;
 127  if ( oLink )
 128      FCK.Selection.SelectNode( oLink ) ;
 129  
 130  window.onload = function()
 131  {
 132      // Translate the dialog box texts.
 133      oEditor.FCKLanguageManager.TranslatePage(document) ;
 134  
 135      // Fill the Anchor Names and Ids combos.
 136      LoadAnchorNamesAndIds() ;
 137  
 138      // Load the selected link information (if any).
 139      LoadSelection() ;
 140  
 141      // Update the dialog box.
 142      SetLinkType( GetE('cmbLinkType').value ) ;
 143  
 144      // Show/Hide the "Browse Server" button.
 145      GetE('divBrowseServer').style.display = FCKConfig.LinkBrowser ? '' : 'none' ;
 146  
 147      // Show the initial dialog content.
 148      GetE('divInfo').style.display = '' ;
 149  
 150      // Set the actual uploader URL.
 151      if ( FCKConfig.LinkUpload )
 152          GetE('frmUpload').action = FCKConfig.LinkUploadURL ;
 153  
 154      // Activate the "OK" button.
 155      window.parent.SetOkButton( true ) ;
 156  }
 157  
 158  var bHasAnchors ;
 159  
 160  function LoadAnchorNamesAndIds()
 161  {
 162      // Since version 2.0, the anchors are replaced in the DOM by IMGs so the user see the icon 
 163      // to edit them. So, we must look for that images now.
 164      var aAnchors = new Array() ;
 165      
 166      var oImages = oEditor.FCK.EditorDocument.getElementsByTagName( 'IMG' ) ;
 167      for( var i = 0 ; i < oImages.length ; i++ )
 168      {
 169          if ( oImages[i].getAttribute('_fckanchor') )
 170              aAnchors[ aAnchors.length ] = oEditor.FCK.GetRealElement( oImages[i] ) ;
 171      }
 172      
 173      var aIds = oEditor.FCKTools.GetAllChildrenIds( oEditor.FCK.EditorDocument.body ) ;
 174  
 175      bHasAnchors = ( aAnchors.length > 0 || aIds.length > 0 ) ;
 176  
 177      for ( var i = 0 ; i < aAnchors.length ; i++ )
 178      {
 179          var sName = aAnchors[i].name ;
 180          if ( sName && sName.length > 0 )
 181              oEditor.FCKTools.AddSelectOption( GetE('cmbAnchorName'), sName, sName ) ;
 182      }
 183  
 184      for ( var i = 0 ; i < aIds.length ; i++ )
 185      {
 186          oEditor.FCKTools.AddSelectOption( GetE('cmbAnchorId'), aIds[i], aIds[i] ) ;
 187      }
 188  
 189      ShowE( 'divSelAnchor'    , bHasAnchors ) ;
 190      ShowE( 'divNoAnchor'    , !bHasAnchors ) ;
 191  }
 192  
 193  function LoadSelection()
 194  {
 195      if ( !oLink ) return ;
 196  
 197      var sType = 'url' ;
 198  
 199      // Get the actual Link href.
 200      var sHRef = oLink.getAttribute( '_fcksavedurl' ) ;
 201      if ( !sHRef || sHRef.length == 0 )
 202          sHRef = oLink.getAttribute( 'href' , 2 ) + '' ;
 203      
 204      // TODO: Wait stable version and remove the following commented lines.
 205  //    if ( sHRef.startsWith( FCK.BaseUrl ) )
 206  //        sHRef = sHRef.remove( 0, FCK.BaseUrl.length ) ;
 207  
 208      // Look for a popup javascript link.
 209      var oPopupMatch = oRegex.PopupUri.exec( sHRef ) ;
 210      if( oPopupMatch )
 211      {
 212          GetE('cmbTarget').value = 'popup' ;
 213          sHRef = oPopupMatch[1] ;
 214          FillPopupFields( oPopupMatch[2], oPopupMatch[3] ) ;
 215          SetTarget( 'popup' ) ;
 216      }
 217  
 218      // Search for the protocol.
 219      var sProtocol = oRegex.UriProtocol.exec( sHRef ) ;
 220  
 221      if ( sProtocol )
 222      {
 223          sProtocol = sProtocol[0].toLowerCase() ;
 224          GetE('cmbLinkProtocol').value = sProtocol ;
 225  
 226          // Remove the protocol and get the remainig URL.
 227          var sUrl = sHRef.replace( oRegex.UriProtocol, '' ) ;
 228  
 229          if ( sProtocol == 'mailto:' )    // It is an e-mail link.
 230          {
 231              sType = 'email' ;
 232  
 233              var oEMailInfo = oParser.ParseEMailUrl( sUrl ) ;
 234              GetE('txtEMailAddress').value    = oEMailInfo.Address ;
 235              GetE('txtEMailSubject').value    = oEMailInfo.Subject ;
 236              GetE('txtEMailBody').value        = oEMailInfo.Body ;
 237          }
 238          else                // It is a normal link.
 239          {
 240              sType = 'url' ;
 241              GetE('txtUrl').value = sUrl ;
 242          }
 243      }
 244      else if ( sHRef.substr(0,1) == '#' && sHRef.length > 1 )    // It is an anchor link.
 245      {
 246          sType = 'anchor' ;
 247          GetE('cmbAnchorName').value = GetE('cmbAnchorId').value = sHRef.substr(1) ;
 248      }
 249      else                    // It is another type of link.
 250      {
 251          sType = 'url' ;
 252  
 253          GetE('cmbLinkProtocol').value = '' ;
 254          GetE('txtUrl').value = sHRef ;
 255      }
 256  
 257      if ( !oPopupMatch )
 258      {
 259          // Get the target.
 260          var sTarget = oLink.target ;
 261  
 262          if ( sTarget && sTarget.length > 0 )
 263          {
 264              if ( oRegex.ReserveTarget.test( sTarget ) )
 265              {
 266                  sTarget = sTarget.toLowerCase() ;
 267                  GetE('cmbTarget').value = sTarget ;
 268              }
 269              else
 270                  GetE('cmbTarget').value = 'frame' ;
 271              GetE('txtTargetFrame').value = sTarget ;
 272          }
 273      }
 274  
 275      // Get Advances Attributes
 276      GetE('txtAttId').value            = oLink.id ;
 277      GetE('txtAttName').value        = oLink.name ;
 278      GetE('cmbAttLangDir').value        = oLink.dir ;
 279      GetE('txtAttLangCode').value    = oLink.lang ;
 280      GetE('txtAttAccessKey').value    = oLink.accessKey ;
 281      GetE('txtAttTabIndex').value    = oLink.tabIndex <= 0 ? '' : oLink.tabIndex ;
 282      GetE('txtAttTitle').value        = oLink.title ;
 283      GetE('txtAttContentType').value    = oLink.type ;
 284      GetE('txtAttCharSet').value        = oLink.charset ;
 285  
 286      if ( oEditor.FCKBrowserInfo.IsIE )
 287      {
 288          GetE('txtAttClasses').value    = oLink.getAttribute('className',2) || '' ;
 289          GetE('txtAttStyle').value    = oLink.style.cssText ;
 290      }
 291      else
 292      {
 293          GetE('txtAttClasses').value    = oLink.getAttribute('class',2) || '' ;
 294          GetE('txtAttStyle').value    = oLink.getAttribute('style',2) ;
 295      }
 296  
 297      // Update the Link type combo.
 298      GetE('cmbLinkType').value = sType ;
 299  }
 300  
 301  //#### Link type selection.
 302  function SetLinkType( linkType )
 303  {
 304      ShowE('divLinkTypeUrl'        , (linkType == 'url') ) ;
 305      ShowE('divLinkTypeAnchor'    , (linkType == 'anchor') ) ;
 306      ShowE('divLinkTypeEMail'    , (linkType == 'email') ) ;
 307  
 308      if ( !FCKConfig.LinkDlgHideTarget )
 309          window.parent.SetTabVisibility( 'Target'    , (linkType == 'url') ) ;
 310  
 311      if ( FCKConfig.LinkUpload )
 312          window.parent.SetTabVisibility( 'Upload'    , (linkType == 'url') ) ;
 313  
 314      if ( !FCKConfig.LinkDlgHideAdvanced )
 315          window.parent.SetTabVisibility( 'Advanced'    , (linkType != 'anchor' || bHasAnchors) ) ;
 316  
 317      if ( linkType == 'email' )
 318          window.parent.SetAutoSize( true ) ;
 319  }
 320  
 321  //#### Target type selection.
 322  function SetTarget( targetType )
 323  {
 324      GetE('tdTargetFrame').style.display    = ( targetType == 'popup' ? 'none' : '' ) ;
 325      GetE('tdPopupName').style.display    =
 326          GetE('tablePopupFeatures').style.display = ( targetType == 'popup' ? '' : 'none' ) ;
 327  
 328      switch ( targetType )
 329      {
 330          case "_blank" :
 331          case "_self" :
 332          case "_parent" :
 333          case "_top" :
 334              GetE('txtTargetFrame').value = targetType ;
 335              break ;
 336          case "" :
 337              GetE('txtTargetFrame').value = '' ;
 338              break ;
 339      }
 340  
 341      if ( targetType == 'popup' )
 342          window.parent.SetAutoSize( true ) ;
 343  }
 344  
 345  //#### Called while the user types the URL.
 346  function OnUrlChange()
 347  {
 348      var sUrl = GetE('txtUrl').value ;
 349      var sProtocol = oRegex.UrlOnChangeProtocol.exec( sUrl ) ;
 350  
 351      if ( sProtocol )
 352      {
 353          sUrl = sUrl.substr( sProtocol[0].length ) ;
 354          GetE('txtUrl').value = sUrl ;
 355          GetE('cmbLinkProtocol').value = sProtocol[0].toLowerCase() ;
 356      }
 357      else if ( oRegex.UrlOnChangeTestOther.test( sUrl ) )
 358      {
 359          GetE('cmbLinkProtocol').value = '' ;
 360      }
 361  }
 362  
 363  //#### Called while the user types the target name.
 364  function OnTargetNameChange()
 365  {
 366      var sFrame = GetE('txtTargetFrame').value ;
 367  
 368      if ( sFrame.length == 0 )
 369          GetE('cmbTarget').value = '' ;
 370      else if ( oRegex.ReserveTarget.test( sFrame ) )
 371          GetE('cmbTarget').value = sFrame.toLowerCase() ;
 372      else
 373          GetE('cmbTarget').value = 'frame' ;
 374  }
 375  
 376  //#### Builds the javascript URI to open a popup to the specified URI.
 377  function BuildPopupUri( uri )
 378  {
 379      var oReg = new RegExp( "'", "g" ) ;
 380      var sWindowName = "'" + GetE('txtPopupName').value.replace(oReg, "\\'") + "'" ;
 381  
 382      var sFeatures = '' ;
 383      var aChkFeatures = document.getElementsByName('chkFeature') ;
 384      for ( var i = 0 ; i < aChkFeatures.length ; i++ )
 385      {
 386          if ( i > 0 ) sFeatures += ',' ;
 387          sFeatures += aChkFeatures[i].value + '=' + ( aChkFeatures[i].checked ? 'yes' : 'no' ) ;
 388      }
 389  
 390      if ( GetE('txtPopupWidth').value.length > 0 )    sFeatures += ',width=' + GetE('txtPopupWidth').value ;
 391      if ( GetE('txtPopupHeight').value.length > 0 )    sFeatures += ',height=' + GetE('txtPopupHeight').value ;
 392      if ( GetE('txtPopupLeft').value.length > 0 )    sFeatures += ',left=' + GetE('txtPopupLeft').value ;
 393      if ( GetE('txtPopupTop').value.length > 0 )        sFeatures += ',top=' + GetE('txtPopupTop').value ;
 394  
 395      return ( "javascript:void(window.open('" + uri + "'," + sWindowName + ",'" + sFeatures + "'))" ) ;
 396  }
 397  
 398  //#### Fills all Popup related fields.
 399  function FillPopupFields( windowName, features )
 400  {
 401      if ( windowName )
 402          GetE('txtPopupName').value = windowName ;
 403  
 404      var oFeatures = new Object() ;
 405      var oFeaturesMatch ;
 406      while( ( oFeaturesMatch = oRegex.PopupFeatures.exec( features ) ) != null )
 407      {
 408          var sValue = oFeaturesMatch[2] ;
 409          if ( sValue == ( 'yes' || '1' ) )
 410              oFeatures[ oFeaturesMatch[1] ] = true ;
 411          else if ( ! isNaN( sValue ) && sValue != 0 )
 412              oFeatures[ oFeaturesMatch[1] ] = sValue ;
 413      }
 414  
 415      // Update all features check boxes.
 416      var aChkFeatures = document.getElementsByName('chkFeature') ;
 417      for ( var i = 0 ; i < aChkFeatures.length ; i++ )
 418      {
 419          if ( oFeatures[ aChkFeatures[i].value ] )
 420              aChkFeatures[i].checked = true ;
 421      }
 422  
 423      // Update position and size text boxes.
 424      if ( oFeatures['width'] )    GetE('txtPopupWidth').value        = oFeatures['width'] ;
 425      if ( oFeatures['height'] )    GetE('txtPopupHeight').value    = oFeatures['height'] ;
 426      if ( oFeatures['left'] )    GetE('txtPopupLeft').value        = oFeatures['left'] ;
 427      if ( oFeatures['top'] )        GetE('txtPopupTop').value        = oFeatures['top'] ;
 428  }
 429  
 430  //#### The OK button was hit.
 431  function Ok()
 432  {
 433      var sUri, sInnerHtml ;
 434  
 435      switch ( GetE('cmbLinkType').value )
 436      {
 437          case 'url' :
 438              sUri = GetE('txtUrl').value ;
 439  
 440              if ( sUri.length == 0 )
 441              {
 442                  alert( FCKLang.DlnLnkMsgNoUrl ) ;
 443                  return false ;
 444              }
 445  
 446              sUri = GetE('cmbLinkProtocol').value + sUri ;
 447  
 448              if( GetE('cmbTarget').value == 'popup' )
 449                  sUri = BuildPopupUri( sUri ) ;
 450  
 451              break ;
 452  
 453          case 'email' :
 454              sUri = GetE('txtEMailAddress').value ;
 455  
 456              if ( sUri.length == 0 )
 457              {
 458                  alert( FCKLang.DlnLnkMsgNoEMail ) ;
 459                  return false ;
 460              }
 461  
 462              sUri = oParser.CreateEMailUri(
 463                  sUri,
 464                  GetE('txtEMailSubject').value,
 465                  GetE('txtEMailBody').value ) ;
 466              break ;
 467  
 468          case 'anchor' :
 469              var sAnchor = GetE('cmbAnchorName').value ;
 470              if ( sAnchor.length == 0 ) sAnchor = GetE('cmbAnchorId').value ;
 471  
 472              if ( sAnchor.length == 0 )
 473              {
 474                  alert( FCKLang.DlnLnkMsgNoAnchor ) ;
 475                  return false ;
 476              }
 477  
 478              sUri = '#' + sAnchor ;
 479              break ;
 480      }
 481  
 482      // No link selected, so try to create one.
 483      if ( !oLink )
 484          oLink = oEditor.FCK.CreateLink( sUri ) ;
 485      
 486      if ( oLink )
 487          sInnerHtml = oLink.innerHTML ;        // Save the innerHTML (IE changes it if it is like a URL).
 488      else
 489      {
 490          // If no selection, use the uri as the link text (by dom, 2006-05-26)
 491  
 492          sInnerHtml = sUri;
 493  
 494          // try to built better text for empty link
 495          switch (GetE('cmbLinkType').value)
 496          {
 497              // anchor: use old behavior --> return true
 498              case 'anchor':
 499                  sInnerHtml = sInnerHtml.replace( /^#/, '' ) ;
 500                  break;
 501  
 502              // url: try to get path
 503              case 'url':
 504                  var oLinkPathRegEx = new RegExp("//?([^?\"']+)([?].*)?$");
 505                  var asLinkPath = oLinkPathRegEx.exec( sUri );
 506                  if (asLinkPath != null)
 507                      sInnerHtml = asLinkPath[1];  // use matched path
 508                  break;
 509  
 510              // mailto: try to get email address
 511              case 'email':
 512                  sInnerHtml = GetE('txtEMailAddress').value
 513                  break;
 514          }
 515  
 516          // built new anchor and add link text
 517          oLink = oEditor.FCK.CreateElement( 'a' ) ;
 518      }
 519      
 520      oEditor.FCKUndo.SaveUndoStep() ;
 521  
 522      oLink.href = sUri ;
 523      SetAttribute( oLink, '_fcksavedurl', sUri ) ;
 524  
 525      oLink.innerHTML = sInnerHtml ;        // Set (or restore) the innerHTML
 526  
 527      // Target
 528      if( GetE('cmbTarget').value != 'popup' )
 529          SetAttribute( oLink, 'target', GetE('txtTargetFrame').value ) ;
 530      else
 531          SetAttribute( oLink, 'target', null ) ;
 532  
 533      // Advances Attributes
 534      SetAttribute( oLink, 'id'        , GetE('txtAttId').value ) ;
 535      SetAttribute( oLink, 'name'        , GetE('txtAttName').value ) ;        // No IE. Set but doesnt't update the outerHTML.
 536      SetAttribute( oLink, 'dir'        , GetE('cmbAttLangDir').value ) ;
 537      SetAttribute( oLink, 'lang'        , GetE('txtAttLangCode').value ) ;
 538      SetAttribute( oLink, 'accesskey', GetE('txtAttAccessKey').value ) ;
 539      SetAttribute( oLink, 'tabindex'    , ( GetE('txtAttTabIndex').value > 0 ? GetE('txtAttTabIndex').value : null ) ) ;
 540      SetAttribute( oLink, 'title'    , GetE('txtAttTitle').value ) ;
 541      SetAttribute( oLink, 'type'        , GetE('txtAttContentType').value ) ;
 542      SetAttribute( oLink, 'charset'    , GetE('txtAttCharSet').value ) ;
 543  
 544      if ( oEditor.FCKBrowserInfo.IsIE )
 545      {
 546          SetAttribute( oLink, 'className', GetE('txtAttClasses').value ) ;
 547          oLink.style.cssText = GetE('txtAttStyle').value ;
 548      }
 549      else
 550      {
 551          SetAttribute( oLink, 'class', GetE('txtAttClasses').value ) ;
 552          SetAttribute( oLink, 'style', GetE('txtAttStyle').value ) ;
 553      }
 554  
 555      // Select the link.
 556      oEditor.FCKSelection.SelectNode(oLink);
 557      
 558      return true ;
 559  }
 560  
 561  function BrowseServer()
 562  {
 563      OpenFileBrowser( FCKConfig.LinkBrowserURL, FCKConfig.LinkBrowserWindowWidth, FCKConfig.LinkBrowserWindowHeight ) ;
 564  }
 565  
 566  function SetUrl( url )
 567  {
 568      document.getElementById('txtUrl').value = url ;
 569      OnUrlChange() ;
 570      window.parent.SetSelectedTab( 'Info' ) ;
 571  }
 572  
 573  function OnUploadCompleted( errorNumber, fileUrl, fileName, customMsg )
 574  {
 575      switch ( errorNumber )
 576      {
 577          case 0 :    // No errors
 578              alert( 'Your file has been successfully uploaded' ) ;
 579              break ;
 580          case 1 :    // Custom error
 581              alert( customMsg ) ;
 582              return ;
 583          case 101 :    // Custom warning
 584              alert( customMsg ) ;
 585              break ;
 586          case 201 :
 587              alert( 'A file with the same name is already available. The uploaded file has been renamed to "' + fileName + '"' ) ;
 588              break ;
 589          case 202 :
 590              alert( 'Invalid file type' ) ;
 591              return ;
 592          case 203 :
 593              alert( "Security error. You probably don't have enough permissions to upload. Please check your server." ) ;
 594              return ;
 595          default :
 596              alert( 'Error on file upload. Error number: ' + errorNumber ) ;
 597              return ;
 598      }
 599  
 600      SetUrl( fileUrl ) ;
 601      GetE('frmUpload').reset() ;
 602  }
 603  
 604  var oUploadAllowedExtRegex    = new RegExp( FCKConfig.LinkUploadAllowedExtensions, 'i' ) ;
 605  var oUploadDeniedExtRegex    = new RegExp( FCKConfig.LinkUploadDeniedExtensions, 'i' ) ;
 606  
 607  function CheckUpload()
 608  {
 609      var sFile = GetE('txtUploadFile').value ;
 610      
 611      if ( sFile.length == 0 )
 612      {
 613          alert( 'Please select a file to upload' ) ;
 614          return false ;
 615      }
 616      
 617      if ( ( FCKConfig.LinkUploadAllowedExtensions.length > 0 && !oUploadAllowedExtRegex.test( sFile ) ) ||
 618          ( FCKConfig.LinkUploadDeniedExtensions.length > 0 && oUploadDeniedExtRegex.test( sFile ) ) )
 619      {
 620          OnUploadCompleted( 202 ) ;
 621          return false ;
 622      }
 623      
 624      return true ;
 625  }