Examples of net.mygwt.ui.client.widget.tree.TreeItem

net.mygwt.ui.client.widget.tree.TreeItem
A item in a Tree. All events are bubbled to the item's parent tree.
Events:
BeforeAdd : (widget, item, index)

Fires before a item is added or inserted. Listeners can set the doit field to false to cancel the action.
- widget : this
- item : the item being added
- index : the index at which the item will be added
BeforeRemove : (widget, item)

Fires before a item is removed. Listeners can set the doit field to false to cancel the action.
- widget : this
- item : the item being removed
BeforeExpand : (widget, item)

Fires before a item is expanded. Listeners can set the doit field to false to cancel the expand.
- widget : this
- item : the item being expanded
BeforeCollapse : (widget, item)

Fires before a item is collapsed. Listeners can set the doit field to false to cancel the collapse.
- widget : this
- item : the item being expanded
Add : (widget, item, index)

Fires after a item has been added or inserted.
- widget : this
- item : the item that was added
- index : the index at which the item will be added
Remove : (widget, item)

Fires after a item has been removed.
- widget : this
- item : the item being removed
Expand : (widget, item)

Fires after a item has been expanded.
- widget : this
- item : the item being expanded
Collapse : (widget, item)

Fires ater a item is collapsed.
- widget : this
- item : the item being collapsed
CheckChange : (widget)

Fires after a check state change.
- widget : this
CSS:

.my-tree-item (the item itself)

.my-tree-item-text span (the tree item text)

   * 
   * @param tree the tree
   * @param model the model
   */
  public static void buildTree(Tree tree, Model model) {
    TreeItem root = tree.getRootItem();
    for (int i = 0; i < model.getChildCount(); i++) {
      Model m = model.getChild(i);
      TreeItem item = new TreeItem();
      item.setText(m.toString());
      root.add(item);
      process(item, m);
    }
  }

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  }


  private static void process(TreeItem parentItem, Model model) {
    for (int i = 0; i < model.getChildCount(); i++) {
      Model m = model.getChild(i);
      TreeItem item = new TreeItem();
      item.setText(m.toString());
      parentItem.add(item);
      process(item, m);
    }
  }

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  private static void process(TreeItem item, Element parent) {
    int size = DOM.getChildCount(parent);
    for (int i = 0; i < size; i++) {
      Element li = DOM.getChild(parent, i);
      TreeItem childItem = new TreeItem();
      String id = DOM.getElementAttribute(li, "id");
      if (id != null && !id.equals("")) {
        childItem.setId(id);
      }
      childItem.setText(DOM.getElementProperty(li, "title"));
      item.add(childItem);
      for (int j = 0; j < DOM.getChildCount(li); j++) {
        Element subList = DOM.getChild(li, j);
        process(childItem, subList);
      }

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   * @param parent the parent element
   * @param child the child element
   * @param position the insert position
   */
  public void insert(Object parent, Object child, int position) {
    TreeItem p = (TreeItem) findItem(parent);
    internalAdd(p, child, position);
  }

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   * Refreshes this viewer starting with the given element.
   * 
   * @param elem the element
   */
  public void refresh(Object elem) {
    TreeItem item = (TreeItem) findItem(elem);
    if (item != null) {
      if (item.getData("loaded") != null) {
        int count = item.getItemCount();
        for (int i = 0; i < count; i++) {
          item.remove(item.getItem(0));
        }
        item.setData("loaded", null);
        loadChildren(item, item.isExpanded());
      }
    }
  }

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   * Removes the given element from the viewer.
   * 
   * @param element the element to be removed
   */
  public void remove(Object element) {
    TreeItem item = (TreeItem) findItem(element);
    if (item != null) {
      TreeItem parent = item.getParentItem();
      parent.remove(item);
      removeElement(item.getData());
      item.setData(null);
    }
  }

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   * Selects the elements.
   * 
   * @param elem the element to be selected
   */
  public void select(Object elem) {
    TreeItem item = (TreeItem) findItem(elem);
    tree.getSelectionModel().select(item);
  }

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    TreeItem item = (TreeItem) findItem(elem);
    tree.getSelectionModel().select(item);
  }


  public boolean setChecked(Object element, boolean state) {
    TreeItem item = (TreeItem) findItem(element);


    if (item != null) {
      item.setChecked(state);
      return true;
    }


    return false;
  }

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   * 
   * @param element the element
   * @param expanded the expand state
   */
  public void setExpanded(Object element, boolean expanded) {
    TreeItem item = (TreeItem) findItem(element);
    if (item != null) {
      item.setExpanded(expanded);
    }
  }

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  public void setSelection(ISelection selection, boolean reveal) {
    List selected = selection.toList();
    tree.getSelectionModel().deselectAll();
    TreeItem[] items = tree.getAllItems();
    for (int i = 0; i < items.length; i++) {
      TreeItem item = items[i];
      Object elem = item.getData();
      if (selected.contains(elem)) {
        tree.getSelectionModel().select(item);
      }
    }
  }

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Related Classes of net.mygwt.ui.client.widget.tree.TreeItem

net.mygwt.ui.client.util.TreeBuilder

net.mygwt.ui.client.viewer.TreeViewer

java.util.ArrayList

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