widget/gonk/nsAppShell.h

   1 /* Copyright 2012 Mozilla Foundation and Mozilla contributors
   2  *
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 #ifndef nsAppShell_h
  17 #define nsAppShell_h
  18
  19 #include <queue>
  20
  21 #include "mozilla/Mutex.h"
  22 #include "nsBaseAppShell.h"
  23 #include "nsTArray.h"
  24
  25 #include "utils/RefBase.h"
  26
  27 namespace mozilla {
  28 bool ProcessNextEvent();
  29 void NotifyEvent();
  30 }
  31
  32 extern bool gDrawRequest;
  33
  34 class FdHandler;
  35 typedef void(*FdHandlerCallback)(int, FdHandler *);
  36
  37 class FdHandler {
  38 public:
  39     FdHandler()
  40     {
  41         memset(name, 0, sizeof(name));
  42     }
  43
  44     int fd;
  45     char name[64];
  46     FdHandlerCallback func;
  47     void run()
  48     {
  49         func(fd, this);
  50     }
  51 };
  52
  53 namespace android {
  54 class EventHub;
  55 class InputReader;
  56 class InputReaderThread;
  57 }
  58
  59 class GeckoInputReaderPolicy;
  60 class GeckoInputDispatcher;
  61
  62 class nsAppShell : public nsBaseAppShell {
  63 public:
  64     nsAppShell();
  65
  66     NS_DECL_ISUPPORTS_INHERITED
  67     NS_DECL_NSIOBSERVER
  68
  69     nsresult Init();
  70
  71     NS_IMETHOD Exit() MOZ_OVERRIDE;
  72
  73     virtual bool ProcessNextNativeEvent(bool maywait);
  74
  75     void NotifyNativeEvent();
  76
  77     static void NotifyScreenInitialized();
  78     static void NotifyScreenRotation();
  79
  80 protected:
  81     virtual ~nsAppShell();
  82
  83     virtual void ScheduleNativeEventCallback();
  84
  85 private:
  86     nsresult AddFdHandler(int fd, FdHandlerCallback handlerFunc,
  87                           const char* deviceName);
  88     void InitInputDevices();
  89
  90     // This is somewhat racy but is perfectly safe given how the callback works
  91     bool mNativeCallbackRequest;
  92
  93     // This gets flipped when we observe a browser-ui-startup-complete.
  94     // browser-ui-startup-complete means that we're really ready to draw
  95     // and can stop the boot animation
  96     bool mEnableDraw;
  97     nsTArray<FdHandler> mHandlers;
  98
  99     android::sp<android::EventHub>               mEventHub;
 100     android::sp<GeckoInputReaderPolicy> mReaderPolicy;
 101     android::sp<GeckoInputDispatcher>   mDispatcher;
 102     android::sp<android::InputReader>            mReader;
 103     android::sp<android::InputReaderThread>      mReaderThread;
 104 };
 105
 106 #endif /* nsAppShell_h */
 107