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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: Media List Command Handler |
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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 #include <e32base.h> |
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22 |
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23 #include "glxmedialistcommandhandler.h" |
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24 |
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25 #include <eikprogi.h> |
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26 #include <mpxmediageneraldefs.h> |
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27 #include <mpxmediadrmdefs.h> |
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28 #include <mpxmessagegeneraldefs.h> |
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29 #include <mpxmessageprogressdefs.h> |
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30 #include <StringLoader.h> |
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31 |
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32 #include <glxattributecontext.h> |
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33 #include <glxattributeretriever.h> |
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34 #include <glxfetchcontextremover.h> |
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35 #include <glxgeneraluiutilities.h> |
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36 #include <glxuiutility.h> |
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37 #include <glxmediageneraldefs.h> |
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38 #include <glxuistd.h> |
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39 #include <mglxmedialist.h> |
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40 #include <glxcommandhandlers.hrh> |
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41 |
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42 #include "mglxmedialistprovider.h" |
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43 |
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44 // ----------------------------------------------------------------------------- |
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45 // Constructor for command info |
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46 // ----------------------------------------------------------------------------- |
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47 // |
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48 EXPORT_C CGlxMediaListCommandHandler::TCommandInfo::TCommandInfo(TInt aCommandId) |
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49 { |
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50 // Set command id |
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51 iCommandId = aCommandId; |
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52 |
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53 // Do not stop animation before execution |
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54 iStopAnimationForExecution = EFalse; |
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55 |
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56 // Disable for system items |
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57 iDisallowSystemItems = EFalse; |
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58 |
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59 // Disable for DRM protected items |
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60 iDisallowDRM = EFalse; |
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61 |
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62 // Set selection length requirement so that it does not filter |
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63 iMinSelectionLength = 0; |
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64 iMaxSelectionLength = KMaxTInt; |
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65 |
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66 // default minimum item count |
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67 iMinSlideshowPlayableContainedItemCount = 0; |
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68 |
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69 // Disable for animated GIFs |
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70 iDisallowAnimatedGIFs = EFalse; |
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71 |
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72 // Default item category is "none" |
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73 iCategoryFilter = EMPXNoCategory; |
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74 |
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75 // Don't apply category filter |
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76 iCategoryRule = EIgnore; |
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77 |
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78 // Set the default viewing state |
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79 iViewingState = EViewingStateUndefined; |
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80 } |
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81 |
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82 // ----------------------------------------------------------------------------- |
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83 // Constructor |
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84 // ----------------------------------------------------------------------------- |
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85 // |
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86 EXPORT_C CGlxMediaListCommandHandler::CGlxMediaListCommandHandler( |
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87 MGlxMediaListProvider* aMediaListProvider, |
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88 TBool aHasToolbarItem):CGlxCommandHandler(aHasToolbarItem) |
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89 { |
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90 iMediaListProvider = aMediaListProvider; |
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91 iCurrentViewingState = TCommandInfo::EViewingStateUndefined; |
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92 } |
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93 |
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94 // ----------------------------------------------------------------------------- |
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95 // Destructor |
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96 // ----------------------------------------------------------------------------- |
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97 // |
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98 EXPORT_C CGlxMediaListCommandHandler::~CGlxMediaListCommandHandler() |
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99 { |
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100 iCommandInfoArray.Reset(); |
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101 } |
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102 |
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103 // ----------------------------------------------------------------------------- |
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104 // ExecuteL |
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105 // ----------------------------------------------------------------------------- |
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106 // |
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107 EXPORT_C TBool CGlxMediaListCommandHandler::ExecuteL(TInt aCommandId) |
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108 { |
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109 TBool consume = EFalse; |
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110 |
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111 switch (aCommandId) |
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112 { |
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113 case EGlxCmdStateBrowse: |
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114 iCurrentViewingState = TCommandInfo::EViewingStateBrowse; |
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115 break; |
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116 |
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117 case EGlxCmdStateView: |
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118 iCurrentViewingState = TCommandInfo::EViewingStateView; |
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119 break; |
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120 |
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121 default: // Do nothing |
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122 break; |
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123 } |
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124 /// @todo Consume the state command. This requires changing derived classes so that they do not |
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125 /// receive the state commands, but use the TCommandInfo filtering for state. Too risky change |
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126 /// to do for inc6.1. |
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127 |
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128 if ( BypassFiltersForExecute() ) |
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129 { |
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130 MGlxMediaList& list = MediaList(); |
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131 |
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132 consume = DoExecuteL(aCommandId, list); |
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133 } |
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134 else |
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135 { |
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136 // Is this command handled by this command handler |
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137 if ( IsSupported( aCommandId ) ) |
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138 { |
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139 MGlxMediaList& list = MediaList(); |
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140 |
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141 // Do not consume if the command is disabled |
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142 if ( !IsDisabledL(aCommandId, list) ) |
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143 { |
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144 // Ask deriving class to execute |
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145 consume = DoExecuteL(aCommandId, list); |
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146 } |
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147 } |
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148 } |
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149 |
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150 return consume; |
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151 } |
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152 |
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153 // ----------------------------------------------------------------------------- |
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154 // DynInitMenuPaneL |
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155 // ----------------------------------------------------------------------------- |
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156 // |
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157 EXPORT_C void CGlxMediaListCommandHandler::DynInitMenuPaneL(TInt aResourceId, |
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158 CEikMenuPane* aMenuPane) |
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159 { |
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160 if ( aMenuPane ) |
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161 { |
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162 if ( BypassFiltersForMenu() ) |
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163 { |
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164 DoDynInitMenuPaneL(aResourceId, aMenuPane); |
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165 } |
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166 else |
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167 { |
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168 TInt num_items = aMenuPane->NumberOfItemsInPane(); |
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169 TBool atLeastOneEnabledSupportedItem = EFalse; |
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170 |
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171 //CGlxUiUtility* uiUtility = CGlxUiUtility::UtilityL(); |
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172 //CleanupClosePushL(*uiUtility); |
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173 |
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174 // Iterate through menu pane |
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175 for ( TInt i = 0; i < num_items; i++) |
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176 { |
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177 CEikMenuPaneItem::SData& item = aMenuPane->ItemDataByIndexL(i); |
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178 |
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179 // Check if the menu command is know to this command handler |
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180 if ( IsSupported( item.iCommandId ) ) |
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181 { |
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182 TBool isDisabled = IsDisabledL(item.iCommandId, MediaList()); |
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183 |
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184 if( !isDisabled && |
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185 iCurrentViewingState == TCommandInfo::EViewingStateView ) |
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186 { |
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187 //isDisabled = sf.IsActivePaletteItemVisible( item.iCommandId ); |
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188 } |
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189 // Check visibility of the menu item |
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190 aMenuPane->SetItemDimmed( item.iCommandId, isDisabled); |
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191 |
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192 atLeastOneEnabledSupportedItem = atLeastOneEnabledSupportedItem || (!isDisabled); |
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193 } |
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194 } |
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195 |
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196 // CleanupStack::PopAndDestroy(uiUtility); |
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197 |
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198 if ( atLeastOneEnabledSupportedItem ) |
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199 { |
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200 DoDynInitMenuPaneL(aResourceId, aMenuPane); |
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201 } |
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202 } |
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203 } |
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204 } |
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205 |
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206 // --------------------------------------------------------------------------- |
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207 // ActivateL |
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208 // --------------------------------------------------------------------------- |
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209 // |
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210 EXPORT_C void CGlxMediaListCommandHandler::DoActivateL(TInt /*aViewId*/) |
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211 { |
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212 |
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213 } |
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214 |
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215 // --------------------------------------------------------------------------- |
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216 // Default implementation does nothing |
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217 // --------------------------------------------------------------------------- |
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218 // |
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219 EXPORT_C void CGlxMediaListCommandHandler::Deactivate() |
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220 { |
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221 // Do nothing |
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222 } |
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223 |
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224 // --------------------------------------------------------------------------- |
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225 // OfferKeyEventL |
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226 // --------------------------------------------------------------------------- |
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227 // |
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228 EXPORT_C TKeyResponse CGlxMediaListCommandHandler::OfferKeyEventL( |
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229 const TKeyEvent& /*aKeyEvent*/, TEventCode /*aType*/) |
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230 { |
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231 return EKeyWasNotConsumed; |
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232 } |
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233 |
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234 // --------------------------------------------------------------------------- |
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235 // PreDynInitMenuPaneL |
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236 // --------------------------------------------------------------------------- |
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237 // |
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238 EXPORT_C void CGlxMediaListCommandHandler::PreDynInitMenuPaneL( TInt /*aResourceId*/ ) |
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239 { |
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240 // No implementation |
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241 } |
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242 |
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243 // --------------------------------------------------------------------------- |
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244 // CGlxMediaListCommandHandler::GetRequiredAttributesL |
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245 // --------------------------------------------------------------------------- |
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246 // |
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247 EXPORT_C void CGlxMediaListCommandHandler::GetRequiredAttributesL( |
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248 RArray< TMPXAttribute >& aAttributes, |
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249 TBool aFilterUsingSelection, |
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250 TBool aFilterUsingCommandId, |
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251 TInt aCommandId) const |
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252 { |
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253 if (!aFilterUsingCommandId || IsSupported(aCommandId)) |
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254 { |
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255 GetRequiredAttributesL(aAttributes, aFilterUsingSelection); |
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256 } |
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257 } |
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258 |
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259 // ----------------------------------------------------------------------------- |
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260 // Check if command is currently disabled |
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261 // ----------------------------------------------------------------------------- |
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262 // |
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263 EXPORT_C TBool CGlxMediaListCommandHandler::IsDisabledL(TInt aCommandId, |
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264 MGlxMediaList& aMediaList) const |
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265 { |
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266 __ASSERT_DEBUG(IsSupported(aCommandId), Panic(EGlxPanicIllegalArgument)); |
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267 const TCommandInfo& info = CommandInfo(aCommandId); |
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268 |
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269 // Perform expensive checks only if necessary |
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270 TBool isDisabled = IsDisabled(info); |
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271 |
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272 if (!isDisabled) |
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273 { |
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274 /** |
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275 * The disabling check must be done so that we go through the selection |
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276 * and check each item separately against all filter rules. |
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277 * |
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278 * There can for example be a filter that does not allow system items, |
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279 * anim gifs or videos. Now if the selection contains 10 items and 3 of |
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280 * them are system items, 4 are anim gifs and 3 are videos we need to disable the |
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281 * command. If that selection contained 1 "normal" image we must enable |
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282 * the command accordingly. |
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283 */ |
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284 // assume this item is not disabled |
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285 |
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286 |
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287 // Check through all selected items, if no selection then the focused item |
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288 TGlxSelectionIterator iterator; |
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289 iterator.SetToFirst( &aMediaList ); |
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290 // Loop until iterator does not give any more indexes |
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291 TInt index = KErrNotFound; |
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292 while ( KErrNotFound != (index = iterator++ ) ) |
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293 { |
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294 // get the media item |
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295 const TGlxMedia& item = aMediaList.Item( index ); |
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296 |
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297 // check category rule first |
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298 TMPXGeneralCategory cat = item.Category(); |
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299 if( ( TCommandInfo::EIgnore != info.iCategoryRule )&& |
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300 ( cat != EMPXNoCategory ) ) |
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301 { |
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302 // get category attribute |
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303 // did we want to deny all items of this type |
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304 if( TCommandInfo::EForbidAll == info.iCategoryRule ) |
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305 { |
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306 // disable if the category was same |
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307 isDisabled = (info.iCategoryFilter == cat); |
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308 } |
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309 else |
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310 { |
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311 // assign the value |
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312 isDisabled = info.iCategoryFilter != cat; |
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313 // disable if the category was not same |
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314 if( isDisabled ) |
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315 { |
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316 // we found first that is not same so end the loop |
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317 break; |
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318 } |
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319 } |
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320 } |
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321 // Check system item if not yet disabled by previous rules |
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322 TBool isSystemItem = EFalse; |
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323 if( ( !isDisabled )&&( info.iDisallowSystemItems )&& |
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324 ( item.GetSystemItem(isSystemItem) ) ) |
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325 { |
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326 // disable if this was system item |
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327 isDisabled = isSystemItem; |
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328 } |
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329 // Check DRM if not yet disabled by previous rules |
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330 if( (!isDisabled )&&( info.iDisallowDRM ) ) |
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331 { |
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332 // disable if DRM protected |
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333 isDisabled = item.IsDrmProtected(); |
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334 } |
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335 // Check animated GIF if not yet disabled by previous rules |
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336 TInt frameCount(0); |
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337 if( ( !isDisabled )&&( info.iDisallowAnimatedGIFs )&& |
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338 ( item.GetFrameCount(frameCount) ) ) |
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339 { |
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340 // disable if framecount is greater than one |
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341 isDisabled = ( 1 < frameCount ); |
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342 } |
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343 // Check minimum item count if not yet disabled by previous rules |
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344 TInt count(0); |
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345 if( ( !isDisabled )&&( info.iMinSlideshowPlayableContainedItemCount )&& |
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346 ( item.GetSlideshowPlayableContainedItemCount(count) ) ) |
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347 { |
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348 // disable if less than required amount of items in container (ignore non-containers, i.e. -1) |
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349 if( count != -1 ) |
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350 { |
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351 isDisabled = ( count < info.iMinSlideshowPlayableContainedItemCount ); |
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352 } |
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353 } |
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354 // when we find the first item for which the command is not disabled |
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355 // we can end the loop unless the category rule states we need to check them all |
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356 if( ( !isDisabled )&&( TCommandInfo::ERequireAll != info.iCategoryRule ) ) |
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357 { |
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358 // this is the exit of the loop in case there is an item to enable for |
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359 break; |
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360 } |
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361 } |
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362 |
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363 // Check deriving class if we are still not disabled |
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364 if ( !isDisabled ) |
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365 { |
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366 isDisabled = DoIsDisabled( aCommandId, aMediaList ); |
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367 } |
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368 } |
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369 return isDisabled; |
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370 } |
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371 |
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372 // ----------------------------------------------------------------------------- |
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373 // MediaList |
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374 // ----------------------------------------------------------------------------- |
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375 // |
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376 EXPORT_C MGlxMediaList& CGlxMediaListCommandHandler::MediaList() |
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377 { |
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378 return iMediaListProvider->MediaList(); |
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379 } |
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380 |
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381 // ----------------------------------------------------------------------------- |
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382 // MediaList |
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383 // ----------------------------------------------------------------------------- |
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384 // |
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385 EXPORT_C const MGlxMediaList& CGlxMediaListCommandHandler::MediaList() const |
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386 { |
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387 return const_cast<CGlxMediaListCommandHandler*>(this)->MediaList(); |
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388 //return iMediaListProvider->MediaList(); |
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389 } |
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390 |
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391 // ----------------------------------------------------------------------------- |
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392 // Default implementation of elaborate filtering returns EFalse for "not disabled" |
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393 // ----------------------------------------------------------------------------- |
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394 // |
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395 EXPORT_C TBool CGlxMediaListCommandHandler::DoIsDisabled(TInt /*aCommandId*/, |
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396 MGlxMediaList& /*aList*/) const |
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397 { |
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398 return EFalse; |
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399 } |
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400 |
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401 // ----------------------------------------------------------------------------- |
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402 // Return selection length. Length is zero if static item is focused |
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403 // ----------------------------------------------------------------------------- |
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404 // |
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405 EXPORT_C TInt CGlxMediaListCommandHandler::SelectionLength() const |
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406 { |
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407 const MGlxMediaList& ml = MediaList(); |
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408 |
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409 TInt selectionLength = ml.SelectionCount(); |
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410 |
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411 // If there is no selection, treat the focused item as selected, unless |
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412 // it is a static item |
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413 if ( 0 == selectionLength ) |
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414 { |
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415 if (ml.Count() > 0) |
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416 { |
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417 // see if item is a static item |
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418 // get focussed item |
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419 const TGlxMedia& item = ml.Item(ml.FocusIndex()); |
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420 if(!item.IsStatic()) |
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421 { |
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422 // not static item - set selection length to 1 |
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423 selectionLength = 1; |
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424 } |
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425 } |
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426 } |
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427 |
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428 return selectionLength; |
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429 } |
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430 |
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431 // ----------------------------------------------------------------------------- |
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432 // Add the command to command array |
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433 // ----------------------------------------------------------------------------- |
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434 // |
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435 EXPORT_C void CGlxMediaListCommandHandler::AddCommandL( |
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436 const CGlxMediaListCommandHandler::TCommandInfo& aCommand) |
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437 { |
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438 // Make sure command not already added |
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439 __ASSERT_DEBUG(!IsSupported(aCommand.iCommandId), Panic(EGlxPanicAlreadyAdded)); |
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440 |
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441 // This function is rarely called, so copying the object should be ok |
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442 iCommandInfoArray.AppendL(aCommand); |
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443 } |
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444 |
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445 // ----------------------------------------------------------------------------- |
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446 // Return index of command info by command id |
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447 // ----------------------------------------------------------------------------- |
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448 // |
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449 EXPORT_C TInt CGlxMediaListCommandHandler::CommandInfoIndex(TInt aCommandId) const |
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450 { |
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451 // Find the index of the command |
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452 TInt index = KErrNotFound; |
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453 TInt count = iCommandInfoArray.Count(); |
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454 for (TInt i = 0; i < count; i++) |
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455 { |
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456 if (iCommandInfoArray[i].iCommandId == aCommandId) |
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457 { |
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458 index = i; |
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459 break; |
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460 } |
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461 } |
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462 |
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463 return index; |
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464 } |
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465 |
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466 |
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467 // ----------------------------------------------------------------------------- |
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468 // DoDynInitMenuPaneL |
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469 // ----------------------------------------------------------------------------- |
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470 // |
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471 EXPORT_C void CGlxMediaListCommandHandler::DoDynInitMenuPaneL(TInt /*aResourceId*/, CEikMenuPane* /*aMenuPane*/) |
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472 { |
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473 // No implementation by default |
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474 } |
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475 |
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476 |
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477 // ----------------------------------------------------------------------------- |
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478 // Return command info by id |
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479 // ----------------------------------------------------------------------------- |
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480 // |
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481 EXPORT_C CGlxMediaListCommandHandler::TCommandInfo& |
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482 CGlxMediaListCommandHandler::CommandInfo(TInt aCommandId) |
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483 { |
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484 // Assuming the deriving class knows the command ids it supports |
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485 __ASSERT_DEBUG(IsSupported(aCommandId), Panic(EGlxPanicIllegalArgument)); |
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486 return iCommandInfoArray[CommandInfoIndex(aCommandId)]; |
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487 } |
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488 |
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489 // ----------------------------------------------------------------------------- |
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490 // Return command info by id |
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491 // ----------------------------------------------------------------------------- |
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492 // |
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493 const CGlxMediaListCommandHandler::TCommandInfo& |
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494 CGlxMediaListCommandHandler::CommandInfo(TInt aCommandId) const |
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495 { |
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496 // Assuming the deriving class knows the command ids it supports |
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497 __ASSERT_DEBUG(IsSupported(aCommandId), Panic(EGlxPanicIllegalArgument)); |
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498 return iCommandInfoArray[CommandInfoIndex(aCommandId)]; |
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499 } |
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500 |
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501 // ----------------------------------------------------------------------------- |
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502 // return ETrue if command is handled by this command handler |
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503 // ----------------------------------------------------------------------------- |
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504 // |
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505 EXPORT_C TBool CGlxMediaListCommandHandler::IsSupported(TInt aCommandId) const |
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506 { |
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507 return CommandInfoIndex(aCommandId) != KErrNotFound; |
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508 } |
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509 |
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510 // ----------------------------------------------------------------------------- |
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511 // BypassFiltersForExecute |
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512 // ----------------------------------------------------------------------------- |
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513 // |
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514 EXPORT_C TBool CGlxMediaListCommandHandler::BypassFiltersForExecute() const |
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515 { |
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516 // Return false by default: should only return true in special circumstances |
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517 return EFalse; |
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518 } |
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519 |
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520 // ----------------------------------------------------------------------------- |
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521 // CGlxMediaListCommandHandler::DoGetRequiredAttributesL |
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522 // ----------------------------------------------------------------------------- |
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523 // |
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524 EXPORT_C void CGlxMediaListCommandHandler:: |
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525 DoGetRequiredAttributesL( RArray<TMPXAttribute>& /*aAttributes*/, TBool /*aFilterUsingSelection*/) const |
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526 { |
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527 // No implementation required |
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528 } |
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529 |
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530 // ----------------------------------------------------------------------------- |
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531 // BypassFiltersForMenu |
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532 // ----------------------------------------------------------------------------- |
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533 // |
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534 EXPORT_C TBool CGlxMediaListCommandHandler::BypassFiltersForMenu() const |
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535 { |
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536 // Return false by default: should only return true in special circumstances |
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537 return EFalse; |
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538 } |
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539 |
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540 // ----------------------------------------------------------------------------- |
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541 // ViewingState |
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542 // ----------------------------------------------------------------------------- |
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543 // |
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544 EXPORT_C CGlxMediaListCommandHandler::TCommandInfo::TViewingState |
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545 CGlxMediaListCommandHandler::ViewingState() const |
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546 { |
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547 return iCurrentViewingState; |
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548 } |
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549 |
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550 // ----------------------------------------------------------------------------- |
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551 // IsViewable |
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552 // ----------------------------------------------------------------------------- |
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553 // |
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554 TBool CGlxMediaListCommandHandler::IsViewable(const TCommandInfo& aInfo) const |
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555 { |
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556 return aInfo.iViewingState & iCurrentViewingState; |
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557 } |
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558 |
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559 // ----------------------------------------------------------------------------- |
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560 // CGlxMediaListCommandHandler::IsDisabled |
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561 // ----------------------------------------------------------------------------- |
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562 // |
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563 TBool CGlxMediaListCommandHandler::IsDisabled(const TCommandInfo& aInfo) const |
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564 { |
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565 // Check selection length validitity first, because it is a very fast check, |
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566 // and covers so many situations |
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567 TInt selectionLength = SelectionLength(); |
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568 return (selectionLength < aInfo.iMinSelectionLength || |
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569 selectionLength > aInfo.iMaxSelectionLength) || |
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570 !IsViewable(aInfo); |
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571 |
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572 } |
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573 |
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574 // --------------------------------------------------------------------------- |
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575 // CGlxMediaListCommandHandler::GetRequiredAttributesL |
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576 // --------------------------------------------------------------------------- |
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577 // |
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578 void CGlxMediaListCommandHandler::GetRequiredAttributesL( |
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579 RArray< TMPXAttribute >& aAttributes, |
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580 TBool aFilterUsingSelection) const |
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581 { |
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582 // Check selection length validitity first, because it is a very fast check, |
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583 // and covers so many situations |
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584 |
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585 |
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586 TInt commandCount = iCommandInfoArray.Count(); |
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587 |
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588 TBool requireMediaGeneralCategory = EFalse; |
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589 TBool requireMediaDrmProtected = EFalse; |
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590 TBool requireMediaGeneralSystemItem = EFalse; |
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591 TBool requireMediaGeneralFramecount = EFalse; |
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592 TBool requireMediaGeneralSlideshowableContent = EFalse; |
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593 |
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594 for (TInt i = 0; i < commandCount; i++) |
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595 { |
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596 |
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597 if (aFilterUsingSelection && IsDisabled(iCommandInfoArray[i])) |
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598 { |
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599 continue; // No need to add attributes if we already know that the command handler is disabled. |
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600 } |
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601 |
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602 // request category if matters |
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603 if (TCommandInfo::EIgnore != iCommandInfoArray[i].iCategoryRule) |
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604 { |
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605 requireMediaGeneralCategory = ETrue; |
|
606 } |
|
607 |
|
608 // request drm info if matters |
|
609 if (iCommandInfoArray[i].iDisallowDRM) |
|
610 { |
|
611 requireMediaDrmProtected = ETrue; |
|
612 } |
|
613 |
|
614 // request system item info if matters |
|
615 if (iCommandInfoArray[i].iDisallowSystemItems) |
|
616 { |
|
617 requireMediaGeneralSystemItem = ETrue; |
|
618 } |
|
619 |
|
620 // request animated GIFs if matters |
|
621 if (iCommandInfoArray[i].iDisallowAnimatedGIFs ) |
|
622 { |
|
623 requireMediaGeneralFramecount = ETrue; |
|
624 } |
|
625 |
|
626 // request item count if this filter is specified |
|
627 if (iCommandInfoArray[i].iMinSlideshowPlayableContainedItemCount ) |
|
628 { |
|
629 requireMediaGeneralSlideshowableContent = ETrue; |
|
630 } |
|
631 } |
|
632 |
|
633 if (requireMediaGeneralCategory) |
|
634 { |
|
635 aAttributes.AppendL(KMPXMediaGeneralCategory); |
|
636 } |
|
637 |
|
638 if (requireMediaDrmProtected) |
|
639 { |
|
640 aAttributes.AppendL(KMPXMediaDrmProtected); |
|
641 } |
|
642 |
|
643 if (requireMediaGeneralSystemItem) |
|
644 { |
|
645 aAttributes.AppendL(KGlxMediaGeneralSystemItem); |
|
646 } |
|
647 |
|
648 if (requireMediaGeneralFramecount) |
|
649 { |
|
650 aAttributes.AppendL(KGlxMediaGeneralFramecount); |
|
651 } |
|
652 |
|
653 if (requireMediaGeneralSlideshowableContent) |
|
654 { |
|
655 aAttributes.AppendL(KGlxMediaGeneralSlideshowableContent); |
|
656 } |
|
657 |
|
658 DoGetRequiredAttributesL(aAttributes, aFilterUsingSelection); |
|
659 } |