1 /* |
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2 * Copyright (c) 2006-1008 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: Shim view |
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15 * |
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16 */ |
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17 |
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18 #include "GSShimmedView.h" |
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19 |
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20 // System includes |
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21 #include <eikenv.h> |
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22 #include <aknViewAppUi.h> |
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23 |
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24 // User includes |
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25 #include "GSPluginAndViewIdCache.h" |
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26 #include <gsfwviewuids.h> |
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27 #include <gspluginloader.h> |
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28 #include <gsplugininterface.h> |
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29 |
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30 // ================= MEMBER FUNCTIONS ======================= |
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31 |
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32 // ---------------------------------------------------------------------------- |
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33 // CGSShimmedView::CGSShimmedView |
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34 // |
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35 // |
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36 // ---------------------------------------------------------------------------- |
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37 // |
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38 CGSShimmedView::CGSShimmedView( TUid aViewId, |
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39 CGSPluginAndViewIdCache& aCache, |
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40 CCoeAppUi& aAppUi ) |
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41 : CActive( KMaxTInt ), iViewId( aViewId ), iCache( aCache ), iAppUi( aAppUi ) |
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42 { |
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43 } |
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44 |
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45 |
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46 // ---------------------------------------------------------------------------- |
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47 // CGSShimmedView::~CGSShimmedView |
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48 // |
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49 // |
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50 // ---------------------------------------------------------------------------- |
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51 // |
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52 CGSShimmedView::~CGSShimmedView() |
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53 { |
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54 Cancel(); |
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55 DeregisterView(); |
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56 iCache.HandleShimDestruction( iViewId ); |
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57 delete iCustomMessage; |
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58 } |
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59 |
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60 |
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61 // ---------------------------------------------------------------------------- |
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62 // CGSShimmedView::ConstructL |
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63 // |
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64 // |
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65 // ---------------------------------------------------------------------------- |
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66 // |
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67 void CGSShimmedView::ConstructL() |
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68 { |
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69 RegisterViewL(); |
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70 } |
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71 |
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72 |
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73 // ---------------------------------------------------------------------------- |
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74 // CGSShimmedView::NewLC |
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75 // |
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76 // |
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77 // ---------------------------------------------------------------------------- |
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78 // |
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79 CGSShimmedView* CGSShimmedView::NewLC( TUid aViewId, |
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80 CGSPluginAndViewIdCache& aCache, |
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81 CCoeAppUi& aAppUi ) |
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82 { |
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83 CGSShimmedView* self = new(ELeave) CGSShimmedView( aViewId, aCache, aAppUi ); |
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84 CleanupStack::PushL( self ); |
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85 self->ConstructL(); |
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86 return self; |
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87 } |
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88 |
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89 |
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90 // ---------------------------------------------------------------------------- |
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91 // CGSShimmedView::ViewId |
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92 // |
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93 // |
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94 // ---------------------------------------------------------------------------- |
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95 // |
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96 TVwsViewId CGSShimmedView::ViewId() const |
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97 { |
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98 const TVwsViewId ret( KUidGS, iViewId ); |
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99 return ret; |
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100 } |
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101 |
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102 |
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103 // ---------------------------------------------------------------------------- |
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104 // CGSShimmedView::ViewActivatedL |
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105 // |
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106 // |
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107 // ---------------------------------------------------------------------------- |
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108 // |
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109 void CGSShimmedView::ViewActivatedL( const TVwsViewId& aPrevViewId, |
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110 TUid aCustomMessageId, |
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111 const TDesC8& aCustomMessage ) |
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112 { |
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113 const TBool isLoaded = iCache.IsPluginLoaded( iViewId ); |
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114 if ( isLoaded == EFalse ) |
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115 { |
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116 HBufC8* customMessage = aCustomMessage.AllocL(); |
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117 delete iCustomMessage; |
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118 iCustomMessage = customMessage; |
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119 |
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120 iCustomMessageId = aCustomMessageId; |
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121 |
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122 iCache.SetPriorToPlaceholderActiveViewId( aPrevViewId ); |
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123 SetState( EStateActivatingPlaceholderView ); |
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124 } |
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125 } |
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126 |
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127 |
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128 // ---------------------------------------------------------------------------- |
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129 // CGSShimmedView::ViewDeactivated |
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130 // |
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131 // |
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132 // ---------------------------------------------------------------------------- |
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133 // |
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134 void CGSShimmedView::ViewDeactivated() |
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135 { |
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136 } |
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137 |
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138 |
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139 // ---------------------------------------------------------------------------- |
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140 // CGSShimmedView::RunL |
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141 // |
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142 // |
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143 // ---------------------------------------------------------------------------- |
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144 // |
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145 void CGSShimmedView::RunL() |
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146 { |
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147 // NB: At this point, we are the active view. |
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148 |
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149 switch( iState ) |
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150 { |
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151 default: |
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152 case EStateInactive: |
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153 break; |
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154 |
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155 case EStateActivatingPlaceholderView: |
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156 StateActivatePlaceholderViewL(); |
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157 break; |
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158 |
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159 case EStateLoadingPlugin: |
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160 StateLoadPluginL(); |
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161 break; |
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162 |
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163 case EStateDeletingSelf: |
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164 SetState( EStateInactive, EFalse ); |
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165 delete this; |
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166 break; |
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167 } |
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168 } |
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169 |
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170 |
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171 // ---------------------------------------------------------------------------- |
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172 // CGSShimmedView::RegisterViewL |
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173 // |
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174 // |
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175 // ---------------------------------------------------------------------------- |
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176 // |
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177 void CGSShimmedView::RegisterViewL() |
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178 { |
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179 iAppUi.RegisterViewL( *this ); |
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180 iIsRegistered = ETrue; |
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181 } |
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182 |
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183 |
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184 // ---------------------------------------------------------------------------- |
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185 // CGSShimmedView::DeregisterView |
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186 // |
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187 // |
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188 // ---------------------------------------------------------------------------- |
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189 // |
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190 void CGSShimmedView::DeregisterView() |
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191 { |
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192 if ( iIsRegistered ) |
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193 { |
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194 iAppUi.DeregisterView( *this ); |
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195 } |
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196 iIsRegistered = EFalse; |
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197 } |
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198 |
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199 |
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200 |
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201 // ---------------------------------------------------------------------------- |
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202 // CGSShimmedView::DoCancel |
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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 void CGSShimmedView::DoCancel() |
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208 { |
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209 // Nothing to do here - requests already completed |
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210 } |
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211 |
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212 |
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213 // ---------------------------------------------------------------------------- |
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214 // CGSShimmedView::SetState |
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215 // |
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216 // |
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217 // ---------------------------------------------------------------------------- |
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218 // |
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219 void CGSShimmedView::SetState( TState aState, TBool aCompleteRequest ) |
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220 { |
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221 Cancel(); |
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222 // |
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223 iState = aState; |
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224 // |
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225 if ( aCompleteRequest ) |
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226 { |
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227 if ( !IsAdded() ) |
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228 { |
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229 // Add only on-demand to avoid cluttering the scheduler |
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230 CActiveScheduler::Add( this ); |
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231 } |
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232 |
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233 // Complete ourselves to continue activation process asynchronously |
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234 // via RunL(). |
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235 TRequestStatus* status = &iStatus; |
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236 User::RequestComplete( status, KErrNone ); |
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237 SetActive(); |
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238 } |
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239 } |
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240 |
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241 |
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242 // ---------------------------------------------------------------------------- |
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243 // CGSShimmedView::StateActivatePlaceholderViewL |
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244 // |
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245 // |
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246 // ---------------------------------------------------------------------------- |
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247 // |
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248 void CGSShimmedView::StateActivatePlaceholderViewL() |
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249 { |
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250 iCache.ActivatePlaceholderViewL(); |
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251 SetState( EStateLoadingPlugin ); |
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252 } |
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253 |
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254 |
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255 //Disabling warning caused by err variable used inside macros |
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256 #pragma diag_suppress 550 |
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257 // ---------------------------------------------------------------------------- |
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258 // CGSShimmedView::StateLoadPluginL |
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259 // |
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260 // |
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261 // ---------------------------------------------------------------------------- |
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262 // |
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263 void CGSShimmedView::StateLoadPluginL() |
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264 { |
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265 CAknViewAppUi& appUi = static_cast< CAknViewAppUi& >( iAppUi ); |
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266 |
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267 // As a fall back, we'll try to activate the view that was being |
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268 // displayed prior to us attempting to load a plugin. |
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269 TUid viewIdToActivate = iCache.PriorToPlaceholderActiveViewId().iViewUid; |
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270 |
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271 // Get the implementation uid that contains this view. |
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272 const TUid impUid = iCache.PluginImplementationUidForView( iViewId ); |
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273 |
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274 if ( impUid != KNullUid ) |
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275 { |
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276 CGSPluginLoader* loader = CGSPluginLoader::NewL( &appUi ); |
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277 CleanupStack::PushL( loader ); |
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278 |
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279 // Now try to load the specific instance of the GS plugin that |
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280 // implements the real view's concrete implementation. |
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281 // |
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282 // Since the act of loading a plugin will also attempt to register |
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283 // that plugin with the app ui (since a GS plugin "is a" view) we |
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284 // must first unregister the shim view. If there was an error |
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285 // loading the plugin, then we'll re-register the shim. |
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286 DeregisterView(); |
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287 |
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288 CGSPluginInterface* plugin = NULL; |
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289 TRAPD( loadError, plugin = &loader->LoadSyncL( KGSPluginInterfaceUid, impUid ) ); |
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290 CleanupStack::PopAndDestroy( loader ); |
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291 |
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292 if ( loadError == KErrNone ) |
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293 { |
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294 // .. and set us up to activate the newly loaded plugin view. |
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295 viewIdToActivate = iViewId; |
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296 |
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297 // Set ourselves up to be destroyed in the next RunL callback |
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298 SetState( EStateDeletingSelf ); |
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299 } |
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300 else |
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301 { |
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302 // Didn't manage to load plugin. Re-register the view |
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303 // and bail out. |
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304 SetState( EStateInactive, EFalse ); |
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305 RegisterViewL(); |
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306 } |
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307 } |
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308 |
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309 appUi.ActivateLocalViewL( viewIdToActivate, iCustomMessageId, *iCustomMessage ); |
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310 } |
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311 //Enabling warnings |
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312 #pragma diag_default 550 |
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313 |
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314 |
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315 |
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316 |
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317 |
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318 // End of File |
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