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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: Thumbnail Composer plugin |
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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 12/07/2007 by Simon Brooks |
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23 */ |
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24 |
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25 #ifndef __CTHUMBNAILCOMPOSERPLUGIN_H__ |
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26 #define __CTHUMBNAILCOMPOSERPLUGIN_H__ |
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27 |
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28 #include <ComposerPlugin.h> |
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29 #include <MdEObject.h> |
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30 #include <MpxCollectionObserver.h> |
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31 class MMPXCollectionUtility; |
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32 class CMPXCollectionPath; |
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33 class CGlxThumbnailComposerPlugin; |
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34 |
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35 /** |
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36 * Timer to allow inactivity delay if background generation task is cancelled |
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37 */ |
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38 class CGlxThumbnailCompeserInactivityTimer : public CTimer |
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39 { |
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40 public: |
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41 ~CGlxThumbnailCompeserInactivityTimer(); |
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42 static CGlxThumbnailCompeserInactivityTimer* NewL(TInt aPriority, CGlxThumbnailComposerPlugin& aCallback); |
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43 void After(TTimeIntervalMicroSeconds32 aInterval); |
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44 private: |
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45 CGlxThumbnailCompeserInactivityTimer(TInt aPriority, CGlxThumbnailComposerPlugin& aCallback); |
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46 private: // from CActive |
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47 void RunL(); |
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48 void DoCancel(); |
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49 TInt RunError(TInt aError); |
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50 private: |
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51 CGlxThumbnailComposerPlugin& iCallback; |
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52 }; |
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53 |
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54 |
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55 /** |
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56 * Composer plugin to initiate background generation when new items are |
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57 * harvested by the MDS harvester. |
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58 * |
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59 * @author David Holland |
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60 */ |
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61 NONSHARABLE_CLASS( CGlxThumbnailComposerPlugin ) : |
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62 public CComposerPlugin, MMPXCollectionObserver |
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63 { |
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64 public: |
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65 /** |
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66 * Construction |
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67 */ |
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68 static CGlxThumbnailComposerPlugin* NewL(); |
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69 |
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70 /** |
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71 * Destruction |
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72 */ |
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73 ~CGlxThumbnailComposerPlugin(); |
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74 |
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75 private: // From CComposerPlugin |
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76 |
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77 TBool IsComposingComplete(); |
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78 void SetObservers(); |
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79 void RemoveObservers(); |
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80 |
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81 private: // From MMdEObjectObserver |
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82 |
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83 #ifdef RD_MDS_2_0 |
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84 void HandleObjectAdded(CMdESession& aSession, |
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85 const RArray<TItemId>& aObjectIdArray); |
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86 void HandleObjectModified(CMdESession& aSession, |
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87 const RArray<TItemId>& aObjectIdArray); |
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88 void HandleObjectRemoved(CMdESession& aSession, |
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89 const RArray<TItemId>& aObjectIdArray); |
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90 #else |
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91 /** |
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92 * See @ref MMdEObjectObserver::HandleObjectNotification |
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93 */ |
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94 void HandleObjectNotification(CMdESession& aSession, |
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95 TObserverNotificationType aType, |
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96 const RArray<TItemId>& aObjectIdArray); |
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97 #endif |
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98 |
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99 private: // From MMPXCollectionObserver |
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100 |
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101 void HandleCollectionMediaL( const CMPXMedia& aMedia, TInt aError ); |
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102 void HandleCollectionMessage( CMPXMessage* aMsg, TInt aErr ); |
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103 void HandleOpenL( const CMPXMedia& aEntries, |
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104 TInt aIndex, TBool aComplete, TInt aError ); |
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105 void HandleOpenL( const CMPXCollectionPlaylist& aPlaylist, |
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106 TInt aError ); |
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107 void HandleCommandComplete( CMPXCommand* aCommandResult, |
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108 TInt aError ); |
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109 |
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110 private: |
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111 |
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112 /** |
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113 * Private constructor |
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114 */ |
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115 CGlxThumbnailComposerPlugin(); |
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116 |
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117 /** |
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118 * 2nd phase construction |
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119 */ |
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120 void ConstructL(); |
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121 |
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122 /** |
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123 * Add observers to MdE session. |
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124 */ |
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125 void SetObserversL(); |
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126 |
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127 void DoHandleCollectionMessageL( const CMPXMessage& aMsg ); |
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128 |
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129 /** |
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130 * Send next media request to the collection. |
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131 */ |
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132 void RequestItemL(); |
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133 |
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134 public: |
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135 /** |
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136 * Open "all" collection with thumbnail loadability filter. |
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137 */ |
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138 void DoOpenCollectionL(); |
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139 |
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140 /** |
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141 * Send next media request to the collection. |
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142 */ |
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143 void DoRequestItemL(); |
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144 |
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145 /** |
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146 * Free resources and go to idle state. |
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147 */ |
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148 void ReturnToIdle(); |
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149 |
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150 /** |
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151 * Delay display state check, if screen is on. |
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152 */ |
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153 void DelayDisplayStateCheck(); |
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154 |
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155 /** |
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156 * Callback for iCollectionCloser |
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157 */ |
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158 void CloseCollection(); |
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159 |
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160 public: |
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161 /** |
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162 * Enumeration of states for the plugin. |
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163 */ |
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164 enum TComposerState |
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165 { |
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166 EStateIdle, |
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167 EStateFirstOpening, |
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168 EStateOpening, |
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169 EStateActiveLarge, |
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170 EStateActiveSmall, |
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171 EStateCleanup, |
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172 EStateClosing |
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173 }; |
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174 |
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175 /** Current state of the plugin */ |
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176 TComposerState iState; |
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177 |
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178 private: |
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179 /** Isolated collection utility (owned) */ |
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180 MMPXCollectionUtility* iCollectionUtility; |
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181 |
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182 /** Path from collection (owned) */ |
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183 CMPXCollectionPath* iPath; |
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184 |
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185 /** Index of item to thumbnail */ |
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186 TInt iCurrentIndex; |
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187 |
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188 /** Timer to restart Background Harvesting once inactive */ |
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189 CGlxThumbnailCompeserInactivityTimer* iInactivityTimer; |
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190 |
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191 TInt iLastError; |
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192 }; |
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193 |
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194 #endif // __CTHUMBNAILCOMPOSERPLUGIN_H__ |