landmarksui/uicontrols/inc/CLmkDlgSelectorImplBase.h
branchRCL_3
changeset 18 870918037e16
parent 0 522cd55cc3d7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/landmarksui/uicontrols/inc/CLmkDlgSelectorImplBase.h	Wed Sep 01 12:31:27 2010 +0100
@@ -0,0 +1,230 @@
+/*
+* Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:    LandmarksUi Content File -    Base class for common ui selectors (dialog-based).
+*
+*/
+
+
+
+
+
+
+
+#ifndef CLMKDLGSELECTORIMPLBASE_H
+#define CLMKDLGSELECTORIMPLBASE_H
+
+//  INCLUDES
+#include "CLmkSelectorImplBase.h"
+#include "MLmkNavigationObserver.h"
+#include "MLmkDlgMenuObserver.h"
+#include <eikcmobs.h>       // MEikCommandObserver
+
+// FORWARD DECLARATIONS
+class MObjectProvider;
+class CEikonEnv;
+class CLmkSelectorDialog;
+class TCoeHelpContext;
+class CEikTextListBox;
+
+// CLASS DECLARATION
+
+/**
+* Base class for common ui selectors (dialog-based).
+* During implementation it was noticed that pre-selection indexes
+* cause difficulties and some refactoring could be done to make the
+* code easier to read and maintain.
+*
+*/
+class CLmkDlgSelectorImplBase
+: public CLmkSelectorImplBase,
+  public MEikCommandObserver,
+  public MLmkNavigationObserver,
+  public MLmkDlgMenuObserver
+    {
+    public:  // Constructors and destructor
+        /**
+        * Destructor.
+        */
+        ~CLmkDlgSelectorImplBase();
+
+    public: // New functions
+        /**
+        * Selector implementation parent receives observed events when
+        * any of the base class's observation methods is executed.
+        * @param aParent parent of this selector implementor
+        */
+        void SetSelectorImplParent( CLmkDlgSelectorImplBase* aParent );
+
+        /**
+        * Object provider mechanism.
+        * @param aParent parent object
+        */
+        IMPORT_C void SetMopParent( MObjectProvider* aParent );
+
+        /**
+        * Runs single item selection dialog.
+        * @param aOpenedItem contains output selection id
+        * @param aAlwaysModifyOpened if ETrue then highlighted item
+        *        is set to aOpenedItem even if dialog was cancelled
+        * @return !=0 if accepted, 0 if canceled
+        */
+        virtual TInt ExecuteL( TPosLmItemId& aOpenedItem,
+                               TBool aAlwaysModifyOpened = EFalse );
+
+        /**
+        * Runs multiple item selection dialog.
+        * aSelectedItems is used as both input and output parameter
+        * (i.e. if a non-empty array is given then those items are
+        * marked selected by default.
+        * @param aSelectedItems contains input/output selection id(s)
+        * @param aAlwaysModifySelected if ETrue then selected items
+        *        are set to aSelectedItems even if dialog was cancelled
+        * @return !=0 if accepted, 0 if canceled
+        */
+        virtual TInt ExecuteL( RArray<TPosLmItemId>& aSelectedItems,
+                               TBool aAlwaysModifySelected = EFalse );
+
+        /**
+        * Runs single item selection dialog. This method is mainly
+        * targeted for internal use within LmkUi component.
+        * @param aOpenedItem contains output selection index
+        * @return !=0 if accepted, 0 if canceled
+        */
+        virtual TInt ExecuteL( TInt& aOpenedItem );
+
+        /**
+        * Runs multiple item selection dialog. This method is mainly
+        * targeted for internal use within LmkUi component.
+        * aSelectedItems is used as both input and output parameter
+        * (i.e. if a non-empty array is given then those items are
+        * marked selected by default.
+        * @param aSelectedItems contains input/output selection indexes
+        * @return !=0 if accepted, 0 if canceled
+        */
+        virtual TInt ExecuteL( CArrayFix<TInt>& aSelectedItems );
+
+         /**
+      	* Stores the empty dialog label
+        * @param aLabelRes Label resource id
+        */
+        virtual void SetEmptyDlgLabel( TInt aLabelPrimRes ,TInt aLabelSecRes );
+
+       // Added for accepting dynamically changing title pane parameter
+		virtual TInt ExecuteL( CArrayFix<TInt>& aSelectedItems, TPtrC aTitlePaneText );
+
+        /**
+        * Template method implemented by the subclass and called by
+        * the base class.
+        */
+        virtual void GetDlgResources( TBool aIsSingleSelector,
+                                      TInt& aTitlePaneResource,
+                                      TInt& aMenuBarResource,
+                                      TInt& aDialogResource ) const = 0;
+
+
+
+        /**
+        * Template method called by the base class,
+        * implemented by the subclass if dialog has a help.
+        * Base class implementation returns null help context.
+        * @return aContext help context
+        */
+        virtual TCoeHelpContext HelpContext() const;
+
+        virtual void StopExecutionL();
+
+        virtual void SetDialogTitleL(const TDesC& aTitle);
+
+    public: // From CLmkSelectorImplBase
+        MLmkListMemento* MementoL();
+        TInt ListVisibleItemCount();
+        TInt ListMarkedItemCountL();
+
+    protected: // From MEikCommandObserver
+        void ProcessCommandL( TInt aCommandId );
+
+    protected: // From MLmkDlgMenuObserver
+        void DynInitDlgMenuPaneL( TInt aResourceId, CEikMenuPane* aMenuPane );
+
+    protected: // From MLmkListProviderObserver
+        void HandleListProviderEvent( TLmkListProviderEventType aEvent );
+        void HandleListProviderError( TInt aError );
+
+    protected: // From MLmkNavigationObserver
+        TKeyResponse HandleNavigationEventL( const TKeyEvent& aKeyEvent );
+        void HandleLaunchingEventL();
+        void HandleClosingEventL();
+
+        /**
+        * Check whether Coordinates has to be hidden.
+        */
+        void CheckHideCoordinateL( );
+
+    protected: // Constructors and destructor
+        /**
+        * C++ default constructor.
+        * @param aDb
+        * @return newly instantiate object
+        */
+        CLmkDlgSelectorImplBase( CPosLandmarkDatabase& aDb );
+
+        /**
+        * By default Symbian 2nd phase constructor is private.
+        */
+        void BaseConstructL();
+
+    private: // New functions
+
+        /**
+        * Internal helper function which attempts to read indexes
+        * corresponding to stored lm item ids and to set them as
+        * selected in the listbox.
+        */
+        void RetrySetPreSelectedL();
+
+    protected: // Data
+        ///Ref: parent selector
+        CLmkDlgSelectorImplBase* iSelectorImplParent;
+
+        ///Ref: mop parent
+        MObjectProvider* iMopParent;
+
+        ///Own: Note that iDialog is a dynamic object which can be accessed
+        ///     between HandleLaunchingEventL() & HandleClosingEventL().
+        CLmkSelectorDialog* iDialog;
+        TInt iCurrentLabelPrimResource;
+        TInt iCurrentLabelSecResource;
+
+        //It will be ETrue when help has to be hidden.
+        TBool iIsHideHelp;
+
+    private: // Data
+        // These should not be used by subclasses, their content is
+        // guaranteed to be correct only within this class.
+
+        ///Latest provider event recorded by this class
+        TLmkListProviderEventType iDlgSelectorImplBaseLatestListEvent;
+
+        ///Ref: items to be set marked when provider gets ready if it
+        ///     wasn't ready when ExecuteL() was called
+        const RArray<TPosLmItemId>* iInputSelectedItems;
+
+        // user-specified title for the dialog
+        HBufC* iTitle;
+        
+    };
+
+#endif      // CLMKDLGSELECTORIMPLBASE_H
+
+// End of File