OpenCCM.prototype.showLinkDialog = function(link)
{
  if (!this.dialogs["links"])
  {
    this.prepareLinkDialog();
  }

  if(!link && this.editor.selectionEmpty(this.editor.getSelection()))
  {
    alert(this._lc("You need to select some text before creating a link"));
    return false;
  }

  var editor = this.editor;
  this.link = link;

  var data =
  {
    title   : '',
    type    : 'internal',
    ci_name : '',
    ci_href : '',
    href    : ''
  };

  if(link && link.tagName.toLowerCase() == 'a')
  {
    var href =this.editor.fixRelativeLinks(link.getAttribute('href'));
    var internal = href.match(/^(\/.*)$/);
    var external = href.match(/^http(.*)$/);
/*
    var mailto = href.match(/^mailto:(.*@[^?&]*)(\?(.*))?$/);
    var anchor = href.match(/^#(.*)$/);
*/
    data.title  = link.title;

    if(internal)
    {
      data.type = 'internal';
      data.ci_name = link.alt;
      data.ci_href = href;
    }
    
    if(external)
    {
      data.type = 'external';
      data.href = href;
    }

  }

  // now calling the show method of the Xinha.Dialog object to set the values and show the actual dialog
  this.dialogs["links"].show(data);

};

// Prepare the link dialog
OpenCCM.prototype.prepareLinkDialog = function()
{
  var self = this;
  var editor = this.editor;

  var dialog = this.dialogs["links"] = new Xinha.Dialog(editor, OpenCCM.linksHtml, 'Xinha',{width:400})

  // Connect the OK and Cancel buttons
  dialog.getElementById('ok').onclick = function() { self.linkApply(); };
  dialog.getElementById('clear').onclick = function() { self.linkRemove(); };
  dialog.getElementById('cancel').onclick = function() { self.dialogs["links"].hide()};

  // Connect the Browse and Search button
  dialog.getElementById('ci_browse').onclick = function() { self.linkBrowse(window); };
/* Suche deaktivert, bis eine bessere JSP / Java-Klasse vorhanden ist
  dialog.getElementById('ci_search').onclick = function() { alert("Das geht auch noch nicht.");};
*/

  this.linkDialogReady = true;
};

// 
OpenCCM.prototype.linkApply = function()
{

  var values = this.dialogs["links"].hide();
  var link   = this.link;
  var editor = this.editor;

  var linkAttr =
  {
    href  : '',
    alt   : '',
    title : '',
    class : ''
  };

  // Read needed form values
  switch(values.type)
  {
    case "internal":  //alert("Internal");
                      linkAttr.href  = values.ci_href;
                      /* Deaktiviert bis es eine bessere JSP / Java-Klasse gibt
                      linkAttr.alt   = values.ci_name;
                      */
                      linkAttr.title = values.title;
                      linkAttr.class = "linkInternal";
                      break;
                      
    case "external":  //alert("External");
                      linkAttr.href  = values.href;
                      linkAttr.title = values.title;
                      linkAttr.class = "linkExternal";
                      
                      // Make absolute url
                      
                      break;
                      
    default:          //alert("Mist");
                      return false;
  }

  // If not all mandatory informations are set
  if(linkAttr.href == "" || linkAttr.title == "")
  {
    // don't do anything at all
    return false;
  }

  // Modify Link
  if(link && link.tagName.toLowerCase() == "a")
  {

    for(var i in linkAttr)
    {
      link.setAttribute(i, linkAttr[i]);
    }

/* from Linker-Plugin
    // If we change a mailto link in IE for some hitherto unknown
    // reason it sets the innerHTML of the link to be the
    // href of the link.  Stupid IE.
    if(Xinha.is_ie)
    {
      if(/mailto:([^?<>]*)(\?[^<]*)?$/i.test(link.innerHTML))
      {
        link.innerHTML = RegExp.$1;
      }
    }
*/

  }
  // Add Link
  else
  {

    // Insert a link, we let the editor do this, we figure it knows best
    var tmp = Xinha.uniq("http://www.example.com/Link");
    editor._doc.execCommand("createlink", false, tmp);

    // Fix it up
    var anchors = editor._doc.getElementsByTagName('a');
    for(var i = 0; i < anchors.length; i++)
    {
      var anchor = anchors[i];
      if(anchor.href == tmp)
      {
        // Found one.
        if (!link) link = anchor;
        for(var j in linkAttr)
        {
          anchor.setAttribute(j, linkAttr[j]);
        }
      }
    }

  }

  editor.selectNodeContents(link);
  editor.updateToolbar();
};

// Remove a link
OpenCCM.prototype.linkRemove = function()
{

  var values = this.dialogs["links"].hide();
  var link   = this.link;
  var editor = this.editor;

  if(link && link.tagName.toLowerCase() == 'a')
  {
    if(confirm(this._lc('Are you sure you wish to remove this link?')))
    {
      var parent = link.parentNode;
      while(link.hasChildNodes())
      {
        parent.insertBefore(link.removeChild(link.childNodes[0]), link);
      }
      
      parent.removeChild(link);
      editor.updateToolbar();
      return true;
    }
  }
};

OpenCCM.prototype.linkBrowse = function(window)
{
  var baseURL = window.location.href;
  var offset  = baseURL.lastIndexOf("/");
  var destURL = baseURL.slice(0, offset+1) + "search.jsp?useURL=true&widget=getElementById('" + this.dialogs["links"].id["ci_href"] + "')";

//  var searchDialog = new Xinha.Dialog(this.editor, destURL, '');//,{width:800, height:600}, {'closable':true});
//  searchDialog.show();
  window.open(destURL, "_blank", "scrollbars=yes,directories=no,toolbar=no,width=800,height=600,status=no,menubar=no");

  return false;
}

// Get selected anchor
OpenCCM.prototype._getSelectedAnchor = function()
{
  var sel  = this.editor.getSelection();
  var rng  = this.editor.createRange(sel);
  var link = this.editor.activeElement(sel);
  
  if(link != null && link.tagName.toLowerCase() == 'a')
  {
    return link;
  }
  else
  {
    link = this.editor._getFirstAncestor(sel, 'a');
    if(link != null)
    {
      return link;
    }
  }
  return null;
};