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Settings Framework API

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Created: ltomuta (17 Jun 2007)
Last edited: hamishwillee (30 May 2013)

Note.pngNote: :This API is not part of the public SDK. It can be found in the SDK API Plug-in.

Settings Framework is an application used for viewing dynamic plug-ins. This will load the plug-ins dynamically using ECom Architecture. It is designed to handle the minimum amount of plug-in related logic. All the plug-ins are implemented based on the ECom Plug-in Architecture.

Description

Creation of a General Setting Plug-in can be done directly by implementing CGSPluginInterface, or indirectly from the CGSBaseView. The Plug-in View class can be inherited from above classes based on the requirement. Create a container level class that implements the visualization of the plug-in view. Container level classes should be created when the view is activated

and destroyed when the view is deactivated.

CGSBaseView:

This class provides the common functionality in CAknView and CGSPluginInterface classes. One can inherit this class and implement the common functionality.

The responsibilities of the view level classes are:

  • Implementing the view functionality defined by CGSBaseView:
TUid Id() const; // from CAknView

This returns the current view id.

  • Creating and adding a container to the view stack when the view is activated.
void DoActivateL( 
const TVwsViewId& aPrevViewId,
TUid /* aCustomMessageId */,
const TDesC8& /* aCustomMessage */); // from CAknView, incase of multiple views

This function should call the NewContainerL() where a new instance of the container is created and add the container to the control stack.

  • Removing the container from the view stack and destroying it when the view is deactivated.
void DoDeactivate(); // from CAknView, incase of multiple views

This function should remove container from the control stack and delete it.

void ConstructL();
void NewContainerL();

Create an instance of Container here.

void HandleListBoxSelectionL(); // from MEikListBoxObserver
  • Implementing the plug-in functionality defined by CGSPluginInterface.
void GetCaptionL( TDes& aCaption ); //from CGSPluginInterface

This function is used in getting caption of this plugin.


CGSBaseContainer:

This class provides the common functionality for the CCoeControl classes. So a container level class can derive from this to implement the common functionality.

The container level class responsibilities are:

  • Implementing the view functionality defined by CGSBaseContainer:
void ConstructL();
  • Call this API which will initialize the ListBox:
BaseConstructL( const TRect& aRect, TInt aResTitleId, TInt aResLbxId );

This API internally calls ConstructListBoxL() which constructs the ListBox.

  • Call this API which will update the changes in the contents in the ListBox:
void UpdateListBoxL();

Example project

The following is the link to the Example Project:

File:SettingFrameWork.zip

Known issues

This page was last modified on 30 May 2013, at 04:40.
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