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1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 package org.chromium.blimp.session; | |
6 | |
7 import android.view.View; | |
8 | |
9 import org.chromium.base.annotations.JNINamespace; | |
10 | |
11 /** | |
12 * A Java representation of the native ControlFeature class. Provides easy acce
ss for Java control | |
13 * UI to interact with the native content-lite feature proxy and talk to the eng
ine. | |
14 */ | |
15 @JNINamespace("blimp::client") | |
16 public class TabControlFeature implements View.OnLayoutChangeListener { | |
17 private View mContentAreaView; | |
18 private long mNativeTabControlFeatureAndroidPtr; | |
19 | |
20 /** | |
21 * Creates an instance of a {@link TabControlFeature}. This will register w
ith | |
22 * {@code contentAreaView} as a {@link android.view.View.OnLayoutChangeListe
ner} and will | |
23 * unregister when {@link #destroy()} is called. | |
24 * @param blimpClientSession The {@link BlimpClientSession} that contains th
e content-lite | |
25 * features required by the native components of t
he | |
26 * {@link TabControlFeature}. | |
27 * @param contentAreaView A {@link View} that represents the content area
of the screen. | |
28 * This is used to notify the engine of the correc
t size of the web | |
29 * content area. | |
30 */ | |
31 public TabControlFeature(BlimpClientSession blimpClientSession, View content
AreaView) { | |
32 mContentAreaView = contentAreaView; | |
33 mContentAreaView.addOnLayoutChangeListener(this); | |
34 mNativeTabControlFeatureAndroidPtr = nativeInit(blimpClientSession); | |
35 } | |
36 | |
37 /** | |
38 * Tears down the native counterpart to this class and unregisters any {@lin
k View} listeners. | |
39 * This class should not be used after this. | |
40 */ | |
41 public void destroy() { | |
42 if (mContentAreaView != null) { | |
43 mContentAreaView.removeOnLayoutChangeListener(this); | |
44 mContentAreaView = null; | |
45 } | |
46 | |
47 if (mNativeTabControlFeatureAndroidPtr != 0) { | |
48 nativeDestroy(mNativeTabControlFeatureAndroidPtr); | |
49 mNativeTabControlFeatureAndroidPtr = 0; | |
50 } | |
51 } | |
52 | |
53 // View.OnLayoutChangeListener implementation. | |
54 @Override | |
55 public void onLayoutChange(View v, int left, int top, int right, int bottom, | |
56 int oldLeft, int oldTop, int oldRight, int oldBottom) { | |
57 if (mNativeTabControlFeatureAndroidPtr == 0) return; | |
58 nativeOnContentAreaSizeChanged(mNativeTabControlFeatureAndroidPtr, right
- left, | |
59 bottom - top, | |
60 mContentAreaView.getContext().getResources().getDisplayMetrics()
.density); | |
61 } | |
62 | |
63 private native long nativeInit(BlimpClientSession blimpClientSession); | |
64 private native void nativeDestroy(long nativeTabControlFeatureAndroid); | |
65 private native void nativeOnContentAreaSizeChanged( | |
66 long nativeTabControlFeatureAndroid, int width, int height, float dp
ToPx); | |
67 } | |
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