1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package android.webkit;
17
18interface ZoomControlBase {
19
20    /**
21     * Causes the on-screen zoom control to be made visible
22     */
23    public void show();
24
25    /**
26     * Causes the on-screen zoom control to disappear
27     */
28    public void hide();
29
30    /**
31     * Enables the control to update its state if necessary in response to a
32     * change in the pages zoom level. For example, if the max zoom level is
33     * reached then the control can disable the button for zooming in.
34     */
35    public void update();
36
37    /**
38     * Checks to see if the control is currently visible to the user.
39     */
40    public boolean isVisible();
41}
42