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1 /* |
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2 * Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Base classes for multi-purpuse tasks |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 |
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21 /** |
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22 * @internal reviewed 31/07/2007 by Simon Brooks |
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23 */ |
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24 |
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25 |
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26 #include "glxtntask.h" |
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27 |
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28 #include <glxtracer.h> |
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29 |
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30 #include "mglxtnthumbnailcreatorclient.h" |
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31 |
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32 // ----------------------------------------------------------------------------- |
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33 // Constructor |
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34 // ----------------------------------------------------------------------------- |
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35 // |
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36 CGlxtnTask::CGlxtnTask(const TGlxtnTaskId& aId, const TGlxMediaId& aItemId, |
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37 MGlxtnThumbnailStorage* aStorage) |
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38 : iState(EStarting), iId(aId), iItemId(aItemId), iStorage(aStorage) |
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39 { |
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40 TRACER("CGlxtnTask::CGlxtnTask()"); |
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41 iPriority = CActive::EPriorityStandard; |
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42 } |
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43 |
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44 // ----------------------------------------------------------------------------- |
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45 // Destructor |
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46 // ----------------------------------------------------------------------------- |
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47 // |
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48 CGlxtnTask::~CGlxtnTask() |
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49 { |
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50 TRACER("CGlxtnTask::~CGlxtnTask()"); |
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51 } |
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52 |
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53 // ----------------------------------------------------------------------------- |
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54 // SetManager |
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55 // ----------------------------------------------------------------------------- |
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56 // |
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57 void CGlxtnTask::SetManager(CGlxtnTaskManager* /*aManager*/) |
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58 { |
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59 TRACER("CGlxtnTask::SetManager()"); |
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60 // No implementation - can be overridden by subclasses |
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61 } |
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62 |
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63 // ----------------------------------------------------------------------------- |
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64 // StartL |
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65 // ----------------------------------------------------------------------------- |
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66 // |
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67 void CGlxtnTask::StartL(TRequestStatus& aStatus) |
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68 { |
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69 TRACER("CGlxtnTask::StartL()"); |
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70 __ASSERT_DEBUG(iState == EIdle || iState == EStarting, Panic(EGlxPanicIllegalState)); |
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71 |
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72 iState = EStarting; |
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73 |
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74 TBool active = DoStartL(aStatus); |
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75 |
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76 if (active) |
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77 { |
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78 iState = ERunning; |
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79 } |
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80 else |
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81 { |
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82 iState = EComplete; // Well, that was quick |
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83 } |
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84 } |
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85 |
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86 // ----------------------------------------------------------------------------- |
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87 // Cancel |
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88 // ----------------------------------------------------------------------------- |
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89 // |
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90 void CGlxtnTask::Cancel() |
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91 { |
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92 TRACER("CGlxtnTask::Cancel()"); |
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93 if ( ERunning == iState ) |
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94 { |
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95 DoCancel(); |
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96 } |
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97 |
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98 iState = ECanceled; |
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99 } |
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100 |
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101 // ----------------------------------------------------------------------------- |
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102 // RunL |
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103 // ----------------------------------------------------------------------------- |
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104 // |
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105 void CGlxtnTask::RunL(TRequestStatus& aStatus) |
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106 { |
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107 TRACER("void CGlxtnTask::RunL()"); |
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108 __ASSERT_DEBUG(iState == ERunning, Panic(EGlxPanicIllegalState)); |
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109 |
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110 TBool active = DoRunL(aStatus); |
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111 |
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112 if (!active) |
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113 { |
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114 iState = EComplete; // The task is done |
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115 } |
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116 } |
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117 |
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118 // ----------------------------------------------------------------------------- |
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119 // RunError |
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120 // ----------------------------------------------------------------------------- |
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121 // |
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122 void CGlxtnTask::RunError(TInt aError) |
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123 { |
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124 TRACER("void CGlxtnTask::RunError()"); |
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125 if ( !DoRunError(aError) ) |
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126 { |
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127 iState = EComplete; // The task is done |
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128 } |
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129 } |
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130 |
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131 // ----------------------------------------------------------------------------- |
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132 // SelfComplete |
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133 // ----------------------------------------------------------------------------- |
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134 // |
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135 void CGlxtnTask::SelfComplete(TRequestStatus& aStatus) |
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136 { |
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137 TRACER("CGlxtnTask::SelfComplete()"); |
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138 aStatus = KRequestPending; |
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139 TRequestStatus* status = &aStatus; |
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140 User::RequestComplete(status, KErrNone); |
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141 } |
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142 |
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143 // ----------------------------------------------------------------------------- |
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144 // Constructor |
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145 // ----------------------------------------------------------------------------- |
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146 // |
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147 CGlxtnClientTask::CGlxtnClientTask(const TGlxtnTaskId& aId, |
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148 const TGlxMediaId& aItemId, MGlxtnThumbnailCreatorClient& aClient) : |
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149 CGlxtnTask(aId, aItemId, aClient.ThumbnailStorage()), iClient(aClient) |
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150 { |
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151 TRACER("CGlxtnClientTask::CGlxtnClientTask()"); |
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152 } |