src/Tizen.Applications.WidgetApplication/Tizen.Applications.CoreBackend/WidgetCoreBackend.cs

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
   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 using System;
  18 using System.Collections.Generic;
  19 using Tizen.Internals.Errors;
  20
  21 namespace Tizen.Applications.CoreBackend
  22 {
  23     internal class WidgetCoreBackend : ICoreBackend
  24     {
  25         protected static readonly string LogTag = typeof(WidgetCoreBackend).Namespace;
  26
  27         private Dictionary<EventType, object> _handlers = new Dictionary<EventType, object>();
  28
  29         private bool _disposedValue = false;
  30
  31         private Interop.Widget.AppEventCallback _lowMemoryCallback;
  32         private Interop.Widget.AppEventCallback _lowBatteryCallback;
  33         private Interop.Widget.AppEventCallback _localeChangedCallback;
  34         private Interop.Widget.AppEventCallback _regionChangedCallback;
  35
  36         private IntPtr _lowMemoryEventHandle = IntPtr.Zero;
  37         private IntPtr _lowBatteryEventHandle = IntPtr.Zero;
  38         private IntPtr _localeChangedEventHandle = IntPtr.Zero;
  39         private IntPtr _regionChangedEventHandle = IntPtr.Zero;
  40
  41         private Interop.Widget.WidgetAppLifecycleCallbacks _callbacks;
  42
  43         internal IList<WidgetType> WidgetTypes = new List<WidgetType>();
  44
  45         public WidgetCoreBackend()
  46         {
  47             _lowMemoryCallback = new Interop.Widget.AppEventCallback(OnLowMemoryNative);
  48             _lowBatteryCallback = new Interop.Widget.AppEventCallback(OnLowBatteryNative);
  49             _localeChangedCallback = new Interop.Widget.AppEventCallback(OnLocaleChangedNative);
  50             _regionChangedCallback = new Interop.Widget.AppEventCallback(OnRegionChangedNative);
  51
  52             _callbacks.OnCreate = new Interop.Widget.WidgetAppCreateCallback(OnCreateNative);
  53             _callbacks.OnTerminate = new Interop.Widget.WidgetAppTerminateCallback(OnTerminateNative);
  54         }
  55
  56         ~WidgetCoreBackend()
  57         {
  58             Dispose(false);
  59         }
  60
  61         internal void CreateWidgetTypes(IDictionary<Type, string> typeInfo)
  62         {
  63             foreach (Type w in typeInfo.Keys)
  64             {
  65                 WidgetTypes.Add(new WidgetType(w, typeInfo[w]));
  66             }
  67         }
  68
  69         public void Dispose()
  70         {
  71             Dispose(true);
  72             GC.SuppressFinalize(this);
  73         }
  74
  75         protected virtual void Dispose(bool disposing)
  76         {
  77             if (!_disposedValue)
  78             {
  79                 if (disposing)
  80                 {
  81                     // Release disposable objects
  82                 }
  83
  84                 if (_lowMemoryEventHandle != IntPtr.Zero)
  85                 {
  86                     Interop.Widget.RemoveEventHandler(_lowMemoryEventHandle);
  87                 }
  88                 if (_lowBatteryEventHandle != IntPtr.Zero)
  89                 {
  90                     Interop.Widget.RemoveEventHandler(_lowBatteryEventHandle);
  91                 }
  92                 if (_localeChangedEventHandle != IntPtr.Zero)
  93                 {
  94                     Interop.Widget.RemoveEventHandler(_localeChangedEventHandle);
  95                 }
  96                 if (_regionChangedEventHandle != IntPtr.Zero)
  97                 {
  98                     Interop.Widget.RemoveEventHandler(_regionChangedEventHandle);
  99                 }
 100
 101                 _disposedValue = true;
 102             }
 103         }
 104
 105         public void Exit()
 106         {
 107             Interop.Widget.Exit();
 108         }
 109
 110         public void Run(string[] args)
 111         {
 112             Interop.Widget.ErrorCode err = Interop.Widget.ErrorCode.None;
 113             err = Interop.Widget.AddEventHandler(out _lowMemoryEventHandle, Interop.Widget.AppEventType.LowMemory, _lowMemoryCallback, IntPtr.Zero);
 114             if (err != Interop.Widget.ErrorCode.None)
 115             {
 116                 Log.Error(LogTag, "Failed to add event handler for LowMemory event. Err = " + err);
 117             }
 118             err = Interop.Widget.AddEventHandler(out _lowBatteryEventHandle, Interop.Widget.AppEventType.LowBattery, _lowBatteryCallback, IntPtr.Zero);
 119             if (err != Interop.Widget.ErrorCode.None)
 120             {
 121                 Log.Error(LogTag, "Failed to add event handler for LowBattery event. Err = " + err);
 122             }
 123
 124             err = Interop.Widget.AddEventHandler(out _localeChangedEventHandle, Interop.Widget.AppEventType.LanguageChanged, _localeChangedCallback, IntPtr.Zero);
 125             if (err != Interop.Widget.ErrorCode.None)
 126             {
 127                 Log.Error(LogTag, "Failed to add event handler for LocaleChanged event. Err = " + err);
 128             }
 129
 130             err = Interop.Widget.AddEventHandler(out _regionChangedEventHandle, Interop.Widget.AppEventType.RegionFormatChanged, _regionChangedCallback, IntPtr.Zero);
 131             if (err != Interop.Widget.ErrorCode.None)
 132             {
 133                 Log.Error(LogTag, "Failed to add event handler for RegionFormatChanged event. Err = " + err);
 134             }
 135
 136             err = Interop.Widget.Main(args.Length, args, ref _callbacks, IntPtr.Zero);
 137             if (err != Interop.Widget.ErrorCode.None)
 138             {
 139                 Log.Error(LogTag, "Failed to run the application. Err = " + err);
 140             }
 141         }
 142
 143         private IntPtr OnCreateNative(IntPtr data)
 144         {
 145             if (_handlers.ContainsKey(EventType.Created))
 146             {
 147                 var handler = _handlers[EventType.Created] as Action;
 148                 handler?.Invoke();
 149             }
 150
 151             IntPtr h = IntPtr.Zero;
 152             foreach (WidgetType type in WidgetTypes)
 153                 h = type.Bind(h);
 154
 155             return h;
 156         }
 157
 158         private void OnTerminateNative(IntPtr data)
 159         {
 160             if (_handlers.ContainsKey(EventType.Terminated))
 161             {
 162                 var handler = _handlers[EventType.Terminated] as Action;
 163                 handler?.Invoke();
 164             }
 165         }
 166
 167         public void AddEventHandler(EventType evType, Action handler)
 168         {
 169             _handlers.Add(evType, handler);
 170         }
 171
 172         public void AddEventHandler<TEventArgs>(EventType evType, Action<TEventArgs> handler) where TEventArgs : EventArgs
 173         {
 174             _handlers.Add(evType, handler);
 175         }
 176
 177         private void OnLowMemoryNative(IntPtr infoHandle, IntPtr data)
 178         {
 179             LowMemoryStatus status = LowMemoryStatus.None;
 180             ErrorCode err = Interop.Widget.AppEventGetLowMemoryStatus(infoHandle, out status);
 181             if (err != ErrorCode.None)
 182             {
 183                 Log.Error(LogTag, "Failed to get memory status. Err = " + err);
 184             }
 185             if (_handlers.ContainsKey(EventType.LowMemory))
 186             {
 187                 var handler = _handlers[EventType.LowMemory] as Action<LowMemoryEventArgs>;
 188                 handler?.Invoke(new LowMemoryEventArgs(status));
 189             }
 190         }
 191
 192         private void OnLowBatteryNative(IntPtr infoHandle, IntPtr data)
 193         {
 194             LowBatteryStatus status = LowBatteryStatus.None;
 195             ErrorCode err = Interop.Widget.AppEventGetLowBatteryStatus(infoHandle, out status);
 196             if (err != ErrorCode.None)
 197             {
 198                 Log.Error(LogTag, "Failed to get battery status. Err = " + err);
 199             }
 200             if (_handlers.ContainsKey(EventType.LowBattery))
 201             {
 202                 var handler = _handlers[EventType.LowBattery] as Action<LowBatteryEventArgs>;
 203                 handler?.Invoke(new LowBatteryEventArgs(status));
 204             }
 205         }
 206
 207         private void OnLocaleChangedNative(IntPtr infoHandle, IntPtr data)
 208         {
 209             string lang;
 210             ErrorCode err = Interop.Widget.AppEventGetLanguage(infoHandle, out lang);
 211             if (err != ErrorCode.None)
 212             {
 213                 Log.Error(LogTag, "Failed to get changed language. Err = " + err);
 214             }
 215             if (_handlers.ContainsKey(EventType.LocaleChanged))
 216             {
 217                 var handler = _handlers[EventType.LocaleChanged] as Action<LocaleChangedEventArgs>;
 218                 handler?.Invoke(new LocaleChangedEventArgs(lang));
 219             }
 220         }
 221
 222         private void OnRegionChangedNative(IntPtr infoHandle, IntPtr data)
 223         {
 224             string region;
 225             ErrorCode err = Interop.Widget.AppEventGetRegionFormat(infoHandle, out region);
 226             if (err != ErrorCode.None)
 227             {
 228                 Log.Error(LogTag, "Failed to get changed region format. Err = " + err);
 229             }
 230             if (_handlers.ContainsKey(EventType.RegionFormatChanged))
 231             {
 232                 var handler = _handlers[EventType.RegionFormatChanged] as Action<RegionFormatChangedEventArgs>;
 233                 handler?.Invoke(new RegionFormatChangedEventArgs(region));
 234             }
 235         }
 236
 237     }
 238 }