|
1 /* |
|
2 * Copyright (c) 2007-2008 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: Observes the state of a Vcc P&S property |
|
15 * |
|
16 */ |
|
17 |
|
18 |
|
19 #include <e32cmn.h> |
|
20 #include <e32debug.h> |
|
21 #include <vccsubscribekeys.h> |
|
22 |
|
23 #include "vccuipspropertylistener.h" |
|
24 #include "rubydebug.h" |
|
25 |
|
26 // ======== MEMBER FUNCTIONS ======== |
|
27 // ----------------------------------------------------------------------------- |
|
28 // C++ constructor |
|
29 // ----------------------------------------------------------------------------- |
|
30 // |
|
31 CVccUiPsPropertyListener::CVccUiPsPropertyListener( const TUint aKeyId ) |
|
32 :CActive( EPriorityStandard ), |
|
33 iCategoryId( KPSVccPropertyCategory ), |
|
34 iKeyId( aKeyId ) |
|
35 { |
|
36 } |
|
37 |
|
38 // ----------------------------------------------------------------------------- |
|
39 // 2nd phase constructor |
|
40 // ----------------------------------------------------------------------------- |
|
41 // |
|
42 void CVccUiPsPropertyListener::ConstructL() |
|
43 { |
|
44 RUBY_DEBUG_BLOCKL( "CVccUiPsPropertyListener::ConstructL" ); |
|
45 // Attach to categroy and key. |
|
46 User::LeaveIfError( iProperty.Attach( iCategoryId, iKeyId ) ); |
|
47 // Add to active scheduler |
|
48 CActiveScheduler::Add( this ); |
|
49 } |
|
50 |
|
51 // ----------------------------------------------------------------------------- |
|
52 // Constructor |
|
53 // ----------------------------------------------------------------------------- |
|
54 // |
|
55 EXPORT_C CVccUiPsPropertyListener* CVccUiPsPropertyListener::NewL( |
|
56 const TUint aKeyId ) |
|
57 { |
|
58 RUBY_DEBUG_BLOCKL( "CVccUiPsPropertyListener::NewL" ); |
|
59 |
|
60 CVccUiPsPropertyListener* self = new ( ELeave ) CVccUiPsPropertyListener( |
|
61 aKeyId ); |
|
62 CleanupStack::PushL( self ); |
|
63 self->ConstructL(); |
|
64 CleanupStack::Pop( self ); |
|
65 |
|
66 return self; |
|
67 } |
|
68 |
|
69 // ----------------------------------------------------------------------------- |
|
70 // Destructor |
|
71 // ----------------------------------------------------------------------------- |
|
72 // |
|
73 EXPORT_C CVccUiPsPropertyListener::~CVccUiPsPropertyListener() |
|
74 { |
|
75 RUBY_DEBUG0( "CVccUiPsPropertyListener::~CVccUiPsPropertyListener() - ENTER" ); |
|
76 Cancel(); |
|
77 iProperty.Close(); |
|
78 iObservers.Close(); |
|
79 RUBY_DEBUG0( "CVccUiPsPropertyListener::~CVccUiPsPropertyListener() - EXIT" ); |
|
80 } |
|
81 |
|
82 // ----------------------------------------------------------------------------- |
|
83 // Adds a Vcc property observer to the list of observers |
|
84 // ----------------------------------------------------------------------------- |
|
85 // |
|
86 EXPORT_C void CVccUiPsPropertyListener::AddObserverL( |
|
87 MVccPsPropertyListenerObserver& aObserver ) |
|
88 { |
|
89 RUBY_DEBUG_BLOCKL( "CVccUiPsPropertyListener::AddObserverL" ); |
|
90 |
|
91 if ( iObservers.Find( &aObserver ) == KErrNotFound ) |
|
92 { |
|
93 User::LeaveIfError( iObservers.Append( &aObserver ) ); |
|
94 } |
|
95 |
|
96 // And then start. Start() do not start if there are no observers |
|
97 // so we must also try to start here after adding an observer |
|
98 // (if somebody has called Start() before this method). |
|
99 Start(); |
|
100 } |
|
101 |
|
102 // ----------------------------------------------------------------------------- |
|
103 // Removes observer |
|
104 // ----------------------------------------------------------------------------- |
|
105 // |
|
106 EXPORT_C void CVccUiPsPropertyListener::RemoveObserver( |
|
107 MVccPsPropertyListenerObserver& aObserver ) |
|
108 { |
|
109 RUBY_DEBUG_BLOCK( "CVccUiPsPropertyListener::RemoveObserver" ); |
|
110 TInt index = iObservers.Find( &aObserver ); |
|
111 |
|
112 if ( index != KErrNotFound ) |
|
113 { |
|
114 iObservers.Remove( index ); |
|
115 } |
|
116 } |
|
117 |
|
118 // ----------------------------------------------------------------------------- |
|
119 // Fetches the current value of the key |
|
120 // ----------------------------------------------------------------------------- |
|
121 // |
|
122 EXPORT_C TInt CVccUiPsPropertyListener::CurrentValue() |
|
123 { |
|
124 RUBY_DEBUG_BLOCK( "CVccUiPsPropertyListener::CurrentValue" ); |
|
125 TInt value( KErrNotFound ); |
|
126 iProperty.Get( iCategoryId, iKeyId, value ); |
|
127 return value; |
|
128 } |
|
129 |
|
130 // ----------------------------------------------------------------------------- |
|
131 // Subscribes to property |
|
132 // ----------------------------------------------------------------------------- |
|
133 // |
|
134 EXPORT_C void CVccUiPsPropertyListener::Start() |
|
135 { |
|
136 RUBY_DEBUG_BLOCK( "CVccUiPsPropertyListener::Start" ); |
|
137 |
|
138 // If no obsevers, do not start. |
|
139 if ( iObservers.Count() == 0 ) |
|
140 { |
|
141 return; |
|
142 } |
|
143 |
|
144 // Subscribe to get updates. |
|
145 if ( !IsActive() ) |
|
146 { |
|
147 iProperty.Subscribe( iStatus ); |
|
148 SetActive(); |
|
149 } |
|
150 } |
|
151 |
|
152 // ----------------------------------------------------------------------------- |
|
153 // Cancels the outstanding subsription request |
|
154 // ----------------------------------------------------------------------------- |
|
155 // |
|
156 void CVccUiPsPropertyListener::DoCancel() |
|
157 { |
|
158 RUBY_DEBUG0( "CVccUiPsPropertyListener::DoCancel - ENTER" ); |
|
159 iProperty.Cancel(); |
|
160 RUBY_DEBUG0( "CVccUiPsPropertyListener::DoCancel - EXIT" ); |
|
161 } |
|
162 |
|
163 // ----------------------------------------------------------------------------- |
|
164 // Handles the request completion event |
|
165 // ----------------------------------------------------------------------------- |
|
166 // |
|
167 void CVccUiPsPropertyListener::RunL() |
|
168 { |
|
169 RUBY_DEBUG_BLOCKL( "CVccUiPsPropertyListener::RunL" ); |
|
170 TInt err = iStatus.Int(); |
|
171 |
|
172 // Re-issue the subscription request if there are observers. |
|
173 // Do this before notifying our observser so that we get all |
|
174 // notifications (if the rest of the RunL takes some time). |
|
175 |
|
176 if ( iObservers.Count() > 0 ) |
|
177 { |
|
178 Start(); |
|
179 } |
|
180 |
|
181 if ( KErrNone == err ) |
|
182 { |
|
183 // Notify property changes to observers. |
|
184 NotifyObserversL(); |
|
185 } |
|
186 } |
|
187 |
|
188 // ----------------------------------------------------------------------------- |
|
189 // Notifies all observers about the changed value |
|
190 // ----------------------------------------------------------------------------- |
|
191 // |
|
192 void CVccUiPsPropertyListener::NotifyObserversL() |
|
193 { |
|
194 RUBY_DEBUG_BLOCKL( "CVccUiPsPropertyListener::NotifyObserversL" ); |
|
195 |
|
196 TInt value = CurrentValue(); |
|
197 |
|
198 RUBY_DEBUG1( " -value[%d]", value); |
|
199 |
|
200 for ( TInt i(0) ; i < iObservers.Count() ; i++ ) |
|
201 { |
|
202 MVccPsPropertyListenerObserver* observer = iObservers[i]; |
|
203 |
|
204 if ( observer ) |
|
205 { |
|
206 observer->VccPropertyChangedL( iKeyId, value ); |
|
207 } |
|
208 } |
|
209 } |