1/*
2 * Copyright (C) 2013 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 */
16
17#ifndef _ANDROID_VIEW_INPUTQUEUE_H
18#define _ANDROID_VIEW_INPUTQUEUE_H
19
20#include <input/Input.h>
21#include <utils/Looper.h>
22#include <utils/TypeHelpers.h>
23#include <utils/Vector.h>
24
25#include "JNIHelp.h"
26
27/*
28 * Declare a concrete type for the NDK's AInputQueue forward declaration
29 */
30struct AInputQueue{
31};
32
33namespace android {
34
35class InputQueue : public AInputQueue, public MessageHandler {
36public:
37    virtual ~InputQueue();
38
39    void attachLooper(Looper* looper, int ident, ALooper_callbackFunc callback, void* data);
40
41    void detachLooper();
42
43    bool hasEvents();
44
45    status_t getEvent(InputEvent** outEvent);
46
47    bool preDispatchEvent(InputEvent* event);
48
49    void finishEvent(InputEvent* event, bool handled);
50
51    KeyEvent* createKeyEvent();
52
53    MotionEvent* createMotionEvent();
54
55    void recycleInputEvent(InputEvent* event);
56
57    void enqueueEvent(InputEvent* event);
58
59    static InputQueue* createQueue(jobject inputQueueObj, const sp<Looper>& looper);
60
61protected:
62    virtual void handleMessage(const Message& message);
63
64private:
65    InputQueue(jobject inputQueueObj, const sp<Looper>& looper,
66            int readDispatchFd, int writeDispatchFd);
67
68    void detachLooperLocked();
69
70    jobject mInputQueueWeakGlobal;
71    int mDispatchReadFd;
72    int mDispatchWriteFd;
73    Vector<Looper*> mAppLoopers;
74    sp<Looper> mDispatchLooper;
75    sp<WeakMessageHandler> mHandler;
76    PooledInputEventFactory mPooledInputEventFactory;
77    // Guards the pending and finished event vectors
78    mutable Mutex mLock;
79    Vector<InputEvent*> mPendingEvents;
80    Vector<key_value_pair_t<InputEvent*, bool> > mFinishedEvents;
81};
82
83} // namespace android
84
85#endif
86