xTree usage-优快云博客

This tree widget is based on objects and all html code is generated from a js structure. To create a tree you won't have to write a single line of html however you will have to learn how to to create the tree and treeItem objects.

Usage

The tree(s) needs to be create during the initial load phase of the page. This is accomplished by creating a WebFXTree object and then add WebFXTreeItems to it. Once all items has been added document.write is used to generate the html code and insert it into the page.

  var tree = new WebFXTree('Root');
  tree.add(new WebFXTreeItem('Tree Item 1'));
  tree.add(new WebFXTreeItem('Tree Item 2'));
  tree.add(new WebFXTreeItem('Tree Item 3'));
  document.write(tree);

Folders

A folder is created by adding a new tree item to a already created tree item. However since we need to keep a reference to this tree item object (so that we can add tree items to it, and make it a folder) we cannot create the new object inside the add method. So instead we first create the new tree item object and then we add it to the tree.

  var tree = new WebFXTree('Root');
  
  tree.add(new WebFXTreeItem('1'));
  
  var folder = new WebFXTreeItem('2')
  tree.add(folder);
  
  folder.add(new WebFXTreeItem('2.1'));
  folder.add(new WebFXTreeItem('2.2'));
  folder.add(new WebFXTreeItem('2.3'));
  
  tree.add(new WebFXTreeItem('3'));
  document.write(tree);

Explorer behavior

Since I first published this tree control I've been getting a lot of requesters about making it contain only folders. So I added a setBehavior method to it. The example below is an exact copy of the one above, with the one exception that this uses tree.setBehavior('explorer');

  var tree = new WebFXTree('Root');
  
  tree.setBehavior('explorer');
  
  tree.add(new WebFXTreeItem('1'));
  
  var folder = new WebFXTreeItem('2')
  tree.add(folder);
  
  folder.add(new WebFXTreeItem('2.1'));
  folder.add(new WebFXTreeItem('2.2'));
  folder.add(new WebFXTreeItem('2.3'));
  
  tree.add(new WebFXTreeItem('3'));
  document.write(tree);

Custom Icons

Some times you might want to combine the two styles, or make some of the folders/items have a different icon than the default. To achieve that set the object.icon property to an uri, or to a javascript variable containing one. To change the open icons for folders use object.openIcon.

  var tree = new WebFXTree('Root');
  tree.setBehavior('explorer');
  tree.icon = 'http://webfx.eae.net/images/notepad.gif';
  tree.add(new WebFXTreeItem('1'));
  var folder = new WebFXTreeItem('2')
  tree.add(folder);
  var t21 = new WebFXTreeItem('2.1');
  
  t21.icon = webFXTreeConfig.fileIcon;
  folder.add(t21);
  var t22 = new WebFXTreeItem('2.2');
  
  t22.icon = webFXTreeConfig.fileIcon;
  folder.add(t22);
  var t23 = new WebFXTreeItem('2.3');
  
  t23.icon = webFXTreeConfig.fileIcon;
  folder.add(t23);
  tree.add(new WebFXTreeItem('3'));
  document.write(tree);

转载于:https://www.cnblogs.com/jeep/archive/2010/07/20/1781762.html