|
1 /* |
|
2 * Copyright (c) 2002 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: |
|
15 * Implementation for the CDosEventRcvService class |
|
16 * |
|
17 */ |
|
18 |
|
19 |
|
20 #include <e32base.h> |
|
21 #include "doseventrcvservice.h" |
|
22 #include "doseventmanagerbase.h" |
|
23 #include "doswaitingevent.h" |
|
24 #include "dosclientserver.h" |
|
25 #include "dosserver.h" |
|
26 |
|
27 // |
|
28 // --------------------------------------------------------- |
|
29 // CDosEventRcvService Constructor |
|
30 // --------------------------------------------------------- |
|
31 // |
|
32 |
|
33 |
|
34 CDosEventRcvService::CDosEventRcvService() |
|
35 : iEventQueue(_FOFF(CDosWaitingEvent,iLink)) , iQueueIter(iEventQueue) |
|
36 { |
|
37 iRegistered = EFalse; |
|
38 iReady = EFalse; |
|
39 } |
|
40 |
|
41 |
|
42 // |
|
43 // --------------------------------------------------------- |
|
44 // CDosEventRcvService Destructor |
|
45 // --------------------------------------------------------- |
|
46 // |
|
47 |
|
48 CDosEventRcvService::~CDosEventRcvService() |
|
49 { |
|
50 if(iRegistered) iEventManager->UnRegisterListener(this,iEvent); |
|
51 |
|
52 if (!iEventQueue.IsEmpty()) |
|
53 { |
|
54 CDosWaitingEvent* item; |
|
55 |
|
56 iQueueIter.SetToFirst(); |
|
57 while ((item = iQueueIter++) != NULL) |
|
58 { |
|
59 delete item; |
|
60 } |
|
61 iEventQueue.Reset(); |
|
62 } |
|
63 } |
|
64 |
|
65 |
|
66 // |
|
67 // --------------------------------------------------------- |
|
68 // CDosEventRcvService::NewL |
|
69 // --------------------------------------------------------- |
|
70 // |
|
71 |
|
72 CDosEventRcvService* CDosEventRcvService::NewL(CEventManagerBase* aEventManager) |
|
73 { |
|
74 CDosEventRcvService* result=new (ELeave) CDosEventRcvService; |
|
75 CleanupStack::PushL(result); |
|
76 result->ConstructL(aEventManager); |
|
77 CleanupStack::Pop(); |
|
78 |
|
79 return result; |
|
80 } |
|
81 |
|
82 // |
|
83 // --------------------------------------------------------- |
|
84 // CDosEventRcvService::ConstructL |
|
85 // --------------------------------------------------------- |
|
86 // |
|
87 |
|
88 void CDosEventRcvService::ConstructL(CEventManagerBase* aEventManager) |
|
89 { |
|
90 iEventManager = aEventManager; |
|
91 } |
|
92 |
|
93 // |
|
94 // --------------------------------------------------------- |
|
95 // CDosEventRcvService::InformListener |
|
96 // --------------------------------------------------------- |
|
97 // |
|
98 |
|
99 void CDosEventRcvService::InformListener(CDosWaitingEvent* aEvent) |
|
100 { |
|
101 TInt err = KErrNone; |
|
102 |
|
103 if(iReady) |
|
104 { |
|
105 iReady = EFalse; |
|
106 if(aEvent->HasParameter()) |
|
107 { |
|
108 TRAP(err,iMessage.WriteL(1, aEvent->Parameter())); |
|
109 } |
|
110 |
|
111 iMessage.Complete(err); |
|
112 } |
|
113 else |
|
114 { |
|
115 if(iQueue == EQueue) //The event is queued if the event supports queueing |
|
116 aEvent->AddMeToQueue(iEventQueue); |
|
117 else if(iQueue == EOnlyLast) |
|
118 { |
|
119 //In the EOnlyLast case the queue only has one member. |
|
120 |
|
121 if(!iEventQueue.IsEmpty()) |
|
122 { |
|
123 // If there is an event, we remove it |
|
124 CDosWaitingEvent* event = iEventQueue.First(); |
|
125 event->RemoveMeFromQueueD(iEventQueue); |
|
126 } |
|
127 |
|
128 aEvent->AddMeToQueue(iEventQueue); // We add the latest event. |
|
129 } |
|
130 } |
|
131 } |
|
132 |
|
133 // |
|
134 // --------------------------------------------------------- |
|
135 // CDosEventRcvService::ExecuteMessageL |
|
136 // --------------------------------------------------------- |
|
137 // |
|
138 |
|
139 TInt CDosEventRcvService::ExecuteMessageL(const RMessage2& aMessage) |
|
140 { |
|
141 TInt err=KErrNone; |
|
142 |
|
143 switch (aMessage.Function()) |
|
144 { |
|
145 case ERegisterEvent: |
|
146 iEvent = (TInt32)aMessage.Ptr0(); |
|
147 iEventManager->RegisterListenerL(this,iEvent); |
|
148 iRegistered=ETrue; |
|
149 return err; |
|
150 |
|
151 case EUnRegisterEvent: |
|
152 err = iEventManager->UnRegisterListener(this,iEvent); |
|
153 if(!err) |
|
154 { |
|
155 iRegistered=EFalse; |
|
156 iReady=EFalse; |
|
157 } |
|
158 return err; |
|
159 |
|
160 case EWaitEvent: |
|
161 iMessage = aMessage; |
|
162 iReady = ETrue; |
|
163 iQueue = (TQueueType)aMessage.Int0(); |
|
164 if(iQueue == EQueue || iQueue == EOnlyLast) |
|
165 { |
|
166 // If we have a Queue we take the events from it. |
|
167 if(!iEventQueue.IsEmpty()) |
|
168 { |
|
169 //There are events in the queue. We execute the first now. |
|
170 CDosWaitingEvent* event = iEventQueue.First(); |
|
171 InformListener(event); |
|
172 event->RemoveMeFromQueueD(iEventQueue); |
|
173 } |
|
174 } |
|
175 return KErrNone; |
|
176 |
|
177 case ECancelWaitEvent: |
|
178 if ( iReady ) |
|
179 { |
|
180 iReady = EFalse; |
|
181 iMessage.Complete(KErrCancel); |
|
182 } |
|
183 return KErrNone; |
|
184 |
|
185 default: |
|
186 PanicClient(aMessage,EPanicIllegalFunction); |
|
187 return KErrNone; |
|
188 } |
|
189 } |
|
190 |
|
191 |