|
1 /* |
|
2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: Event manager implementation. |
|
15 * |
|
16 */ |
|
17 |
|
18 |
|
19 |
|
20 // INCLUDE FILES |
|
21 #include "CVtEngEventManager.h" |
|
22 #include "MVtEngEventObserver.h" |
|
23 #include "VtEngUtils.h" |
|
24 #include "VtEngEvents.h" |
|
25 #include "VtEngPanic.h" |
|
26 #include <cvtlogger.h> |
|
27 |
|
28 // CONSTANTS |
|
29 const TInt KMaxEventsInQueue = 8; |
|
30 |
|
31 // max amount of simultanous event observers |
|
32 const TInt KMaxVtEventObservers = 2; |
|
33 |
|
34 // ============================ MEMBER FUNCTIONS =============================== |
|
35 |
|
36 // ----------------------------------------------------------------------------- |
|
37 // CVtEngEventManager::CVtEngEventManager |
|
38 // C++ constructor can NOT contain any code, that |
|
39 // might leave. |
|
40 // ----------------------------------------------------------------------------- |
|
41 // |
|
42 CVtEngEventManager::CVtEngEventManager() : CActive( CActive::EPriorityHigh ), |
|
43 iObservers( KMaxVtEventObservers ) |
|
44 { |
|
45 CActiveScheduler::Add( this ); |
|
46 } |
|
47 |
|
48 |
|
49 // ----------------------------------------------------------------------------- |
|
50 // CVtEngEventManager::NewL |
|
51 // Two-phased constructor. |
|
52 // ----------------------------------------------------------------------------- |
|
53 // |
|
54 CVtEngEventManager* CVtEngEventManager::NewL( |
|
55 MVtEngEventObserver& aEventObserver ) |
|
56 { |
|
57 CVtEngEventManager* self = |
|
58 new ( ELeave ) CVtEngEventManager(); |
|
59 CleanupStack::PushL( self ); |
|
60 self->ConstructL( aEventObserver ); |
|
61 CleanupStack::Pop(); // self |
|
62 return self; |
|
63 } |
|
64 |
|
65 // ----------------------------------------------------------------------------- |
|
66 // CVtEngEventManager::ConstructL |
|
67 // 2nd phase constructor. |
|
68 // ----------------------------------------------------------------------------- |
|
69 // |
|
70 void CVtEngEventManager::ConstructL( MVtEngEventObserver& aEventObserver ) |
|
71 { |
|
72 iEventQueue = new ( ELeave ) CArrayFixFlat< TInt >( KMaxEventsInQueue ); |
|
73 iEventQueue->SetReserveL( KMaxEventsInQueue ); |
|
74 iObservers.Append( &aEventObserver ); |
|
75 } |
|
76 |
|
77 // Destructor |
|
78 CVtEngEventManager::~CVtEngEventManager() |
|
79 { |
|
80 Cancel(); |
|
81 delete iEventQueue; |
|
82 iObservers.Close(); |
|
83 } |
|
84 |
|
85 // ----------------------------------------------------------------------------- |
|
86 // CVtEngEventManager::SessionStateChangedL |
|
87 // Notifies session state change to UI. |
|
88 // ----------------------------------------------------------------------------- |
|
89 // |
|
90 void CVtEngEventManager::SessionStateChanged() |
|
91 { |
|
92 __VTPRINTENTER( "EventManager.SessionStateChanged" ) |
|
93 NotifyEvent( KVtEngSessionStateChanged ); |
|
94 __VTPRINTEXIT( "EventManager.SessionStateChanged" ) |
|
95 } |
|
96 |
|
97 // ----------------------------------------------------------------------------- |
|
98 // CVtEngEventManager::NotifyEvent |
|
99 // ----------------------------------------------------------------------------- |
|
100 // |
|
101 void CVtEngEventManager::NotifyEvent( const TInt aEvent ) |
|
102 { |
|
103 __VTPRINTENTER( "EventManager.NotifyEvent" ) |
|
104 __VTPRINT2( DEBUG_GEN, "EventManager.NotifyEvent event=%d", aEvent ); |
|
105 CVtEngEventManager& eventManager = |
|
106 CVtEngUtility::EventManager(); |
|
107 if ( !eventManager.QueueAsyncEvent( aEvent ) ) |
|
108 { |
|
109 eventManager.DoNotifyEvent( aEvent ); |
|
110 } |
|
111 __VTPRINTEXIT( "EventManager.NotifyEvent" ) |
|
112 } |
|
113 |
|
114 // ----------------------------------------------------------------------------- |
|
115 // CVtEngEventManager::AddObserverL |
|
116 // |
|
117 // ----------------------------------------------------------------------------- |
|
118 // |
|
119 void CVtEngEventManager::AddObserverL( MVtEngEventObserver* aObserver ) |
|
120 { |
|
121 TInt count( iObservers.Count() ); |
|
122 TBool duplicate = EFalse; |
|
123 while ( count-- ) |
|
124 { |
|
125 if ( aObserver == iObservers[ count ] ) |
|
126 { |
|
127 count = 0; // break loop |
|
128 duplicate = ETrue; |
|
129 } |
|
130 } |
|
131 if ( !duplicate ) |
|
132 { |
|
133 User::LeaveIfError( iObservers.Append( aObserver ) ); |
|
134 } |
|
135 } |
|
136 |
|
137 // ----------------------------------------------------------------------------- |
|
138 // CVtEngEventManager::RemoveObserver |
|
139 // |
|
140 // ----------------------------------------------------------------------------- |
|
141 // |
|
142 void CVtEngEventManager::RemoveObserver( const MVtEngEventObserver* aObserver ) |
|
143 { |
|
144 TInt count( iObservers.Count() ); |
|
145 while ( count-- ) |
|
146 { |
|
147 if ( aObserver == iObservers[ count ] ) |
|
148 { |
|
149 iObservers.Remove( count ); |
|
150 count = 0; // break loop |
|
151 } |
|
152 } |
|
153 } |
|
154 |
|
155 // ----------------------------------------------------------------------------- |
|
156 // CVtEngEventManager::RunL |
|
157 // Notify event |
|
158 // ----------------------------------------------------------------------------- |
|
159 // |
|
160 void CVtEngEventManager::RunL() |
|
161 { |
|
162 __VTPRINTENTER( "EventManager.RunL" ) |
|
163 __VTPRINT2( DEBUG_GEN, "EventManager.RunL count=%d", iEventQueue->Count() ); |
|
164 // get oldest event in queue (event at index 0) |
|
165 const TInt event = iEventQueue->At( 0 ) ; |
|
166 |
|
167 // delete event before calling DoNotifyEvent(), because DoNotifyEvent() may |
|
168 // hang if it causes ASynchronous call in handler |
|
169 iEventQueue->Delete( 0 ); |
|
170 |
|
171 // if more events pending -> signal again |
|
172 if( iEventQueue->Count() > 0 ) |
|
173 { |
|
174 Signal(); |
|
175 } |
|
176 |
|
177 // and finally notify event |
|
178 DoNotifyEvent( event ); |
|
179 __VTPRINTEXIT( "EventManager.RunL" ) |
|
180 } |
|
181 |
|
182 // ----------------------------------------------------------------------------- |
|
183 // CVtEngEventManager::DoCancel |
|
184 // No op |
|
185 // ----------------------------------------------------------------------------- |
|
186 // |
|
187 void CVtEngEventManager::DoCancel() |
|
188 { |
|
189 } |
|
190 |
|
191 // ----------------------------------------------------------------------------- |
|
192 // CVtEngEventManager::DoNotifyEvent |
|
193 // ----------------------------------------------------------------------------- |
|
194 // |
|
195 void CVtEngEventManager::DoNotifyEvent( const TInt aEvent ) |
|
196 { |
|
197 __VTPRINTENTER( "EventManager.DoNotifyEvent" ) |
|
198 __VTPRINT2( DEBUG_GEN, "EventManager.DoNotifyEvent event=%d", aEvent ); |
|
199 TRAP_IGNORE( { |
|
200 TInt count( iObservers.Count() ); |
|
201 while ( count-- ) |
|
202 { |
|
203 iObservers[count]->HandleVtEventL( aEvent ) ; |
|
204 } |
|
205 } ) |
|
206 __VTPRINTEXIT( "EventManager.DoNotifyEvent" ) |
|
207 } |
|
208 |
|
209 // ----------------------------------------------------------------------------- |
|
210 // CVtEngEventManager::QueueAsyncEvent |
|
211 // ----------------------------------------------------------------------------- |
|
212 // |
|
213 TBool CVtEngEventManager::QueueAsyncEvent( const TInt aEvent ) |
|
214 { |
|
215 __VTPRINTENTER( "EventManager.QueueAsyncEvent" ) |
|
216 __VTPRINT2( DEBUG_GEN, "EventManager.QueueAsyncEvent event=%d", aEvent ); |
|
217 TBool async( EFalse ); |
|
218 switch ( aEvent ) |
|
219 { |
|
220 case KVtEngSessionStateChanged: |
|
221 case KVtEngNegotiationProblem: |
|
222 case KVtEngShareImageInitializeBegin: |
|
223 case KVtEngShareImageInitializeEnd: |
|
224 async = ETrue; |
|
225 QueueAndSignal( aEvent ); |
|
226 break; |
|
227 default: |
|
228 break; |
|
229 } |
|
230 __VTPRINTEXIT( "EventManager.QueueAsyncEvent" ) |
|
231 return async; |
|
232 } |
|
233 |
|
234 // ----------------------------------------------------------------------------- |
|
235 // CVtEngEventManager::QueueAndSignal |
|
236 // ----------------------------------------------------------------------------- |
|
237 // |
|
238 void CVtEngEventManager::QueueAndSignal( const TInt aEvent ) |
|
239 { |
|
240 __VTPRINTENTER( "EventManager.QueueAndSignal" ) |
|
241 __VTPRINT2( DEBUG_GEN, "EventManager.QueueAndSignal event=%d", aEvent ); |
|
242 if( iEventQueue->Count() < KMaxEventsInQueue ) |
|
243 { |
|
244 TRAP_IGNORE( iEventQueue->AppendL( aEvent ) ); // can't leave |
|
245 Signal(); |
|
246 } |
|
247 else |
|
248 { |
|
249 Panic( EVtEngPanicInvalidTooManyPendingEvents ); |
|
250 } |
|
251 __VTPRINTEXIT( "EventManager.QueueAndSignal" ) |
|
252 } |
|
253 |
|
254 // ----------------------------------------------------------------------------- |
|
255 // CVtEngEventManager::Signal |
|
256 // ----------------------------------------------------------------------------- |
|
257 // |
|
258 void CVtEngEventManager::Signal() |
|
259 { |
|
260 __VTPRINTENTER( "EventManager.Signal" ) |
|
261 if( !IsActive() ) |
|
262 { |
|
263 SetActive(); |
|
264 TRequestStatus* status = &iStatus; |
|
265 User::RequestComplete( status, KErrNone ); |
|
266 __VTPRINT2( DEBUG_GEN, "EventManager.QueueAndSignal count=%d", iEventQueue->Count() ); |
|
267 } |
|
268 __VTPRINTEXIT( "EventManager.Signal" ) |
|
269 } |
|
270 |
|
271 // End of File |