1 /* |
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2 * Copyright (c) 2002-2006 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 |
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19 #ifndef GSSHIMMEDVIEW_H |
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20 #define GSSHIMMEDVIEW_H |
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21 |
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22 // INCLUDES |
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23 #include <e32base.h> |
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24 #include <vwsdef.h> |
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25 #include <coeview.h> |
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26 |
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27 // CONSTANTS |
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28 |
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29 // FORWARD DECLARATIONS |
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30 class CGSPluginAndViewIdCache; |
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31 |
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32 // CLASS DECLARATION |
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33 |
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34 /** |
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35 * CGSShimmedView is used by CGSPluginAndViewIdCache to provide view-framework |
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36 * with all existing plugin views immediately in GS start-up. Shimmed views |
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37 * are used to cache actual views: in case GS view is opened outside GS |
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38 * application while GS is not running in the background, view-framework needs |
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39 * the requested view to exist immediately after GS start-up. This is a problem |
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40 * as GS loads plugins asynchronously after GS start-up. Therefore we provide |
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41 * view-framework with shimmed views in the GS start-up instead of the actual |
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42 * views. Afterwards, when each plugin is loaded, we replace the shimmed view |
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43 * representing the plugin with a real view provided by the loaded plugin. |
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44 * (Each plugin is normally also a view). |
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45 * |
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46 * Shimmed views are only used and needed for enabling external GS plugin |
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47 * view launch. |
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48 * |
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49 * See CGSPluginAndViewIdCache for details. |
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50 * |
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51 * @since Series60_3.1 |
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52 * |
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53 */ |
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54 class CGSShimmedView : public CActive, public MCoeView |
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55 { |
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56 public: // Constructor and destructor |
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57 |
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58 /** |
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59 * |
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60 */ |
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61 static CGSShimmedView* NewLC( TUid aViewId, CGSPluginAndViewIdCache& aCache, CCoeAppUi& aAppUi ); |
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62 |
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63 /** |
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64 * Destructor. |
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65 */ |
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66 ~CGSShimmedView(); |
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67 |
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68 private: |
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69 |
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70 /** |
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71 * C++ constructor |
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72 */ |
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73 CGSShimmedView( TUid aViewId, CGSPluginAndViewIdCache& aCache, CCoeAppUi& aAppUi ); |
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74 |
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75 /** |
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76 * Second phase constructor |
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77 */ |
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78 void ConstructL(); |
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79 |
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80 public: // API |
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81 |
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82 /** |
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83 * |
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84 */ |
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85 void RegisterViewL(); |
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86 |
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87 /** |
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88 * |
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89 */ |
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90 void DeregisterView(); |
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91 |
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92 public: // From MCoeView |
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93 TVwsViewId ViewId() const; |
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94 void ViewActivatedL( const TVwsViewId& aPrevViewId, TUid aCustomMessageId, const TDesC8& aCustomMessage ); |
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95 void ViewDeactivated(); |
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96 |
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97 private: // State |
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98 enum TState |
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99 { |
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100 EStateInactive = 0, |
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101 EStateActivatingPlaceholderView, |
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102 EStateLoadingPlugin, |
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103 EStateDeletingSelf |
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104 }; |
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105 |
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106 void SetState( TState aState, TBool aCompleteRequest = ETrue ); |
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107 void StateActivatePlaceholderViewL(); |
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108 void StateLoadPluginL(); |
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109 |
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110 private: // From CActive |
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111 void RunL(); |
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112 void DoCancel(); |
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113 |
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114 private: // Data |
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115 TUid iViewId; |
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116 CGSPluginAndViewIdCache& iCache; |
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117 CCoeAppUi& iAppUi; |
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118 TState iState; |
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119 TBool iIsRegistered; |
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120 HBufC8* iCustomMessage; |
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121 TUid iCustomMessageId; |
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122 }; |
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123 |
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124 |
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125 #endif // GSSHIMMEDVIEW_H |
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126 // End of File |
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