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| 1 // Copyright (c) 2013 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.ui; |
| 6 |
| 7 import org.chromium.base.JNINamespace; |
| 8 import org.chromium.ui.ViewAndroidDelegate; |
| 9 import org.chromium.ui.WindowAndroid; |
| 10 |
| 11 /** |
| 12 * From the Chromium architecture point of view, ViewAndroid and its native coun
terpart |
| 13 * serve purpose of representing Android view where Chrome expects to have a cro
ss platform |
| 14 * handle to the system view type. As Views are Java object on Android, this Vie
wAndroid |
| 15 * and its native counterpart provide the expected abstractions on the C++ side
and allow |
| 16 * it to be flexibly glued to an actual Android Java View at runtime. |
| 17 * |
| 18 * It should only be used where access to Android Views is needed from the C++ c
ode. |
| 19 */ |
| 20 @JNINamespace("ui") |
| 21 public class ViewAndroid { |
| 22 // Native pointer to the c++ ViewAndroid object. |
| 23 private int mNativeViewAndroid = 0; |
| 24 private final ViewAndroidDelegate mViewAndroidDelegate; |
| 25 private final WindowAndroid mWindowAndroid; |
| 26 |
| 27 /** |
| 28 * Constructs a View object. |
| 29 */ |
| 30 public ViewAndroid(WindowAndroid nativeWindow, ViewAndroidDelegate viewAndro
idDelegate) { |
| 31 mWindowAndroid = nativeWindow; |
| 32 mViewAndroidDelegate = viewAndroidDelegate; |
| 33 mNativeViewAndroid = nativeInit(mWindowAndroid.getNativePointer()); |
| 34 } |
| 35 |
| 36 public ViewAndroidDelegate getViewAndroidDelegate() { |
| 37 return mViewAndroidDelegate; |
| 38 } |
| 39 |
| 40 /** |
| 41 * Destroys the c++ ViewAndroid object if one has been created. |
| 42 */ |
| 43 public void destroy() { |
| 44 if (mNativeViewAndroid != 0) { |
| 45 nativeDestroy(mNativeViewAndroid); |
| 46 mNativeViewAndroid = 0; |
| 47 } |
| 48 } |
| 49 |
| 50 /** |
| 51 * Returns a pointer to the c++ AndroidWindow object. |
| 52 * @return A pointer to the c++ AndroidWindow. |
| 53 */ |
| 54 public int getNativePointer() { |
| 55 return mNativeViewAndroid; |
| 56 } |
| 57 |
| 58 private native int nativeInit(int windowPtr); |
| 59 private native void nativeDestroy(int nativeViewAndroid); |
| 60 } |
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