com.google.gwt.user.client.ui.HasTreeItems.java Source code

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Here is the source code for com.google.gwt.user.client.ui.HasTreeItems.java

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/*
 * Copyright 2010 Google Inc.
 * 
 * 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.
 */
package com.google.gwt.user.client.ui;

import com.google.gwt.safehtml.shared.SafeHtml;

/**
 * A widget that implements this interface contains
 * {@link com.google.gwt.user.client.ui.TreeItem items} and can operate them.
 */
public interface HasTreeItems {

    /**
     * Extends this interface with convenience methods to handle {@link IsWidget}.
     */
    interface ForIsWidget extends HasTreeItems {
        TreeItem addItem(IsWidget w);
    }

    /**
     * Adds a simple tree item containing the specified html.
     * 
     * @param itemHtml the html of the item to be added
     * @return the item that was added
     */
    TreeItem addItem(SafeHtml itemHtml);

    /**
     * Adds an tree item.
     * 
     * @param item the item to be added
     */
    void addItem(TreeItem item);

    /**
     * Adds an item wrapped by specified {@link IsTreeItem}.
     * 
     * @param isItem the wrapper of item to be added
     */
    void addItem(IsTreeItem isItem);

    /**
     * Adds a new tree item containing the specified widget.
     * 
     * @param widget the widget to be added
     * @return the new item
     */
    TreeItem addItem(Widget widget);

    /**
     * Adds a simple tree item containing the specified text.
     * 
     * @param itemText the text of the item to be added
     * @return the item that was added
     */
    TreeItem addTextItem(String itemText);

    /**
     * Removes an item.
     * 
     * @param item the item to be removed
     */
    void removeItem(TreeItem item);

    /**
     * Removes an item.
     * 
     * @param isItem the wrapper of item to be removed
     */
    void removeItem(IsTreeItem isItem);

    /**
     * Removes all items.
     */
    void removeItems();

}