clipboard.js

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/*
* Copyright 2001-2007 Hippo (www.hippo.nl)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
 * Clipboard class.
 * The clipboard contains a list of resources. The resources can be selected
 * from any view in the CMS implementing the "add to clipboard" action.
 * The list can be imported from a document, and pasted back into a document
 * (after editing).
 */
function Clipboard() {
  if(!Cfx.Class.IsDefined(Clipboard)) {
    Cfx.Class.New(Clipboard);
  
    if(Cfx.Class.IsInitializing(Clipboard)) {
       Clipboard.Method(init);
       Clipboard.Method(reset);
       Clipboard.Method(activate);
       Clipboard.Method(deactivate);
       Clipboard.Method(copy);
       Clipboard.Method(paste);
       Clipboard.Method(importItems);
       Clipboard.Method(importXml);
       Clipboard.Method(getListView);
       
       return;
    }
  }
  this.InitInstance();

  var list = null;
  var visible = false;
  var destination = null;
  var workbench = null;
  var destinationPerspective = null;
  var listview = null;

  function init()
  {
    this.list = new List();
    this.list.init();
    this.list.setCaptionAttributeName(null);
    this.list.setUriPrefix("");
    this.list.setUriPostfix("");
    this.workbench = top.frames["topframe"];
    this.listView = new ListGUI();
    this.listView.init(this.list);
    this.pasteAction = null;
    this.updateAction = null;
  }
  
  function reset()
  {
    this.destination = null;
    this.visible = false;
    this.list.clear();
    this.init();
  }

  /**
   * Activates the clipboard.
   *
   * @param selectionPerspective perspective to switch to on activation
   * @param destinationPerspective perspective to switch to on "paste"
   * @param destinationFormField form field to paste list xml into
   * @param pasteAction optional javascript function to call on paste
   * @param maxNumberOfItems optional max number of items allowed
   */  
  function activate(selectionPerspective, destinationPerspective, destinationFormField, updateAction, pasteAction, uriPrefix, uriPostfix, listElementName, itemElementName, uriAttributeName, maxNumberOfItems)
  {
    this.init();
    this.destination = destinationFormField;
    this.destinationPerspective = destinationPerspective;
    this.updateAction = updateAction;
    if (uriPrefix != null)
    {
      this.list.setUriPrefix(uriPrefix);
    }

    if (uriPostfix != null)
    {
      this.list.setUriPostfix(uriPostfix);
    }

    if (maxNumberOfItems != null)
    {
        this.list.setMaxNumberOfItems(maxNumberOfItems);
    }
    this.list.setTopLevelElementName(listElementName);
    this.list.setItemElementName(itemElementName);
    this.list.setUriAttributeName(uriAttributeName);
    this.importXml(destinationFormField.value);
    if (!this.visible)
    {
      this.workbench.showClipboard();      
      this.visible = true;
    }    
    this.workbench.workbench.showMenu(selectionPerspective);    
    if (pasteAction != null)
    {
      this.pasteAction = pasteAction;
    }
    setTimeout("window.top.window.frames['topframe'].Application.sm.lookup('framework.eventmanager').fireEvent('doSearch', [{'key':'addClipboard','val':'true'}])",1500); 
  }
  
  /**
   * Deactivates the clipboard.
   *
   */
  function deactivate()
  {
    if (this.visible)
    {
      this.workbench.hideClipboard();
      this.visible = false;
    }
    if (this.destinationPerspective)
    {
      this.workbench.workbench.showMenu(this.destinationPerspective);
    }
  }

  /**
   * Adds a resource to the clipboard's list.
   *
   * @param uri      the resource's uri
   * @param caption  the resource's caption
   */  
  function copy(uri, caption)
  {
    if (this.visible && this.list != null)
    {
      this.list.addItem(uri, unescape(caption));
    }
    if (this.listView != null)
    {
      this.listView.update();
    }
  }
  
  /**
   * Pastes the clipboard's list into the destination form field (in XML format).
   */
  function paste()
  { 
    if (this.destination != null && this.list != null)
    {      
      this.updateAction(this.list.serializeAsXml());
    }
    if (this.pasteAction != null)
    {
      this.pasteAction.call();
    }
    this.deactivate();
  }
  
  /**
   * Imports an array of items into the clipboard's list. This method is called from
   * the iframe in which the captions are retrieved from the repository.
   */
  function importItems(items)
  {
    if (this.list != null)
    {
      for (var i = 0; i < items.length; i++)
      {
        this.list.addItem(items[i].uri, items[i].caption);
      }
      this.listView.update();
    }
  }
  
  /**
   * Import a list in XML format by posting it to an iframe in which the captions
   * of the resources in the list are retrieved.
   */
  function importXml(xml)
  {
    document.getElementById("clipboardContents").value = xml;
    document.getElementById("import").value = "true";
    document.getElementById("uriPrefix").value = this.list.getUriPrefix();
    document.getElementById("uriPostfix").value = this.list.getUriPostfix();
    document.getElementById("listElementName").value = this.list.getTopLevelElementName();
    document.getElementById("itemElementName").value = this.list.getItemElementName();
    document.getElementById("uriAttributeName").value = this.list.getUriAttributeName();
    document.forms["clipboardForm"].submit();
    document.getElementById("import").value = "false";
  }

  function getListView()
  {
    return this.listView;
  }  

}