/*

* Copyright (c) 2002-2007 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:  A default control in the status pane's navigation pane.

*

*/

#ifndef C_AKNNAVI_H

#define C_AKNNAVI_H

#include <AknControl.h>

#include <coeccntx.h>

#include <Aknvolumecontrol.h>

// FORWARD DECLARATIONS

class CAknNavigationDecorator;

class CEikStatusPaneBase;

class CFbsBitmap;

class MAknTabObserver;

class CAknNavigationControlContainerExtension;

class MAknsControlContext;

class MAknNavigationDecoratorInterface

    {

public:

    virtual ~MAknNavigationDecoratorInterface() { }

    virtual CCoeControl* DecoratedControl() = 0;

    };

class MAknNavigationContainerInterface

    {

public:

    virtual ~MAknNavigationContainerInterface() { }

    virtual CAknNavigationDecorator* CreateMessageLabelL(const TDesC& aText) = 0;

    virtual CAknNavigationDecorator* CreateTabGroupL() = 0;

    virtual void PushL( CAknNavigationDecorator& ) = 0;

    virtual void Pop() = 0;

    };

/**

 * A default control in the status pane's navigation pane.

 */

class CAknNavigationControlContainer : public CAknControl,

                                       public MCoeControlContext,

                                       public MCoeControlObserver,

                                       public MAknNavigationContainerInterface

    {

public:

    DECLARE_TYPE_ID( 0x101F8740 )

public:

    /**

     * C++ default constructor.

     *

     * This object does not own the contents of the navi pane controls stack.

     */

    IMPORT_C CAknNavigationControlContainer();

    /**

     * Destructor.

     *

     * This object does not own the contents of the navi pane controls stack.

     */

    IMPORT_C ~CAknNavigationControlContainer();

    /**

     * Handles 2nd phase construction.

     */

    IMPORT_C void ConstructL();

    /**

     * Constructs from a resource. Created object is owned by this object until

     * @c ResourceDecorator() method is called. If the application does not

     * fetch the object it is deleted in destructor.

     *

     * @param aReader Resource reader.

     */

    IMPORT_C void ConstructFromResourceL( TResourceReader& aReader );

    /**

     * Resource constructor that returns a new object to the application.

     *

     * @param aReader Resource reader.

     * @return Navigation decorator object that contains navigation pane

     *         control read from resources.

     */

    IMPORT_C CAknNavigationDecorator*

                    ConstructNavigationDecoratorFromResourceL(

                                                TResourceReader& aReader);

    /**

     * Creates and returns a new navigation decorator object containing tab

     * group.

     * The ownership of the object is transferred to the application.

     *

     * @return Navigation decorator object that contains tab group.

     */

    IMPORT_C CAknNavigationDecorator* CreateTabGroupL();

    /**

     * Creates and returns a new navigation decorator object containing tab

     * group. The ownership of the object is transferred to the application.

     *

     * @param aObserver Pointer to tab group observer

     * @return Navigation decorator object that contains tab group.

     */

    IMPORT_C CAknNavigationDecorator* CreateTabGroupL(

                                            MAknTabObserver* aObserver);

    /**

     * Creates from a resource and returns a new navigation decorator object

     * containing tab group.

     * The ownership of the object is transferred to the application.

     *

     * @param aReader Resource reader.

     * @return Navigation decorator object that contains tab group.

     */

    IMPORT_C CAknNavigationDecorator* CreateTabGroupL(

                                                TResourceReader& aReader);

    /**

     * Creates from a resource and returns a new navigation decorator object

     * containing tab group.

     * The ownership of the object is transferred to the application.

     *

     * @param aReader Resource reader.

     * @param aObserver Pointer to tab group observer.

     * @return Navigation decorator object that contains tab group.

     */

    IMPORT_C CAknNavigationDecorator* CreateTabGroupL(

                                            TResourceReader& aReader,

                                            MAknTabObserver* aObserver);

    /**

     * Creates and returns a new navigation decorator object containing

     * navigation label.

     * The ownership of the object is transferred to the application.

     *

     * @param aText Label text to the navigation pane.

     * @return Navigation decorator object that contains navigation label.

     */

    IMPORT_C CAknNavigationDecorator* CreateNavigationLabelL(

                                            const TDesC& aText = KNullDesC);

    /**

     * Creates from a resource and returns a new navigation decorator object

     * containing navigation label.

     * The ownership of the object is transferred to the application.

     *

     * @param aReader Resource reader.

     * @return Navigation decorator object that contains navigation label.

     */

    IMPORT_C CAknNavigationDecorator* CreateNavigationLabelL(

                                                    TResourceReader& aReader);

    /**

     * Creates and returns a new navigation decorator object containing

     * navigation image.

     * The ownership of the returned object is transferred to the application.

     * Moves ownership of @c aBitmap and @c aMaskBitmap to the navigation

     * decorator object at the end of the method.

     *

     * @param aBitmap Image to be shown in the navigation pane.

     * @param aMaskBitmap Mask of the image to be shown in the

     *        navigation panel.

     * @return Navigation decorator object that contains navigation image.

     */

    IMPORT_C CAknNavigationDecorator* CreateNavigationImageL(

                                        const CFbsBitmap* aBitmap = NULL,

                                        const CFbsBitmap* aMaskBitmap = NULL);

    /**

     * Creates from a resource and returns a new navigation decorator object

     * containing navigation image.

     * The ownership of the returned object is transferred to the application.

     *

     * @param aReader Resource reader.

     * @return Navigation decorator object that

     *         contains navigation image.

     */

    IMPORT_C CAknNavigationDecorator* CreateNavigationImageL(

                                            TResourceReader& aReader);

    /**

     * Creates and returns a new navigation decorator object containing

     * help text.

     * The ownership of the object is transferred to the application.

     *

     * @param aText Help text label to be shown in the navigation pane.

     * @return Navigation decorator object that

     *         contains message label (=hint text).

     */

    IMPORT_C CAknNavigationDecorator* CreateMessageLabelL(

                                        const TDesC& aText = KNullDesC);

    /**

     * Creates from a resource and returns a new navigation decorator object

     * containing help text.

     * The ownership of the object is transferred to the application.

     *

     * @param aReader Resource reader.

     * @return Navigation decorator object that contains message label

     *         (=hint text).

     */

    IMPORT_C CAknNavigationDecorator* CreateMessageLabelL(

                                            TResourceReader& aReader);

    /**

     * Creates volume control indicator to the navi pane.

     * The ownership of the object is transferred to the application.

     *

     * @param aResourceId Resource file id for the volume control

     * @return Navigation decorator object that contains volume indicator.

     *

     * @deprecated  Navi pane volume control is not supported anymore.

     */

    IMPORT_C CAknNavigationDecorator* CreateVolumeIndicatorL(TInt aResourceId);

    /**

     * Creates editor indicator container control to the navi pane.

     * The ownership of the object is transferred to the application.

     *

     * @return Navigation decorator object that contains editor indicator

     *         container.

     */

    IMPORT_C CAknNavigationDecorator* CreateEditorIndicatorContainerL();

    /**

     * Pushes default content (empty navigation pane) to the navigation pane's

     * object stack.

     * This operation also draws default content to the navigation pane.

     *

     * @param  aAllowDuplicates  If this is @c ETrue, duplicate default

     *                           navi pane contents are allowed.

     */

    IMPORT_C void PushDefaultL( TBool aAllowDuplicates = EFalse );

    /**

     * Pushes a navigation decorator object to the navigation pane's object

     * stack.

     * This operation also draws the control to the navigation pane. An object

     * can be on the stack only once. If the object already exists in the stack

     * it is moved to topmost object. Ownership is not transfered.

     * Editor indicator control has priority over others. It is always at the

     * top if it exists. In this case all other controls are pushed under

     * the editor indicator object.

     *

     * @param aNaviPaneControl Object to be added at the top of the stack.

     */

    IMPORT_C void PushL( CAknNavigationDecorator& aNaviPaneControl );

    /**

     * Pops topmost object from the navigation pane's object stack. If editor

     * indicator control is topmost, it is not popped. The next control

     * is popped instead.

     * It is not possible to pop editor indicator object with this method.

     * Use @c Pop(CAknNavigationDecorator* aControl) or @c delete(aControl)

     * instead if editor indicator control is needed to be popped.

     */

    IMPORT_C void Pop();

    /**

     * Pops (remove) certain object from the navigation pane's object stack.

     * The removed object does not need to be topmost.

     *

     * @param aControl Object to be removed from the stack.

     */

    IMPORT_C void Pop( CAknNavigationDecorator* aControl );

    /**

     * Returns topmost object from navigation pane's object stack.

     * Editor indicator object is transparent for this operation. If editor

     * indicators exist on the navi pane, next object on the stack is returned.

     *

     * @return Navigation decorator object that is topmost in navigation pane's

     *         object stack.

     */

    IMPORT_C CAknNavigationDecorator* Top();

    /**

    * Return topmost object from navigation pane's object stack.

    * FEP Editor indicator object is transparent or visible for this operation

    * depending on the given parameter value. If editor indicator object is to

    * be ignored and it exist on the navi pane, next object on the stack is

    * returned. Note that generally FEP does all the needed visibility etc.

    * handling for FEP editor indicators, so by default applications should

    * ignore FEP editor indicators.

    *

    * @since 3.1

    * @param  aIgnoreFepEditorIndicator  Tells if editor indicator

    *                                    object is ignored.

    *

    * @return Navigation decorator object that is topmost in

    *         navigation pane's object stack.

    */

    IMPORT_C CAknNavigationDecorator* Top(TBool aIgnoreFepEditorIndicator) const;

    /**

     * Replaces existing navigation decorator object in the navigation pane's

     * object stack. Any object can be on the stack only once. If the

     * replacement object already exists in the stack, previous copy is

     * removed from the stack. Ownership is not transfered.

     * Navi pane is redrawn if top item is changed.

     *

     * @param aToBeReplaced An object to be replaced.

     * @param aReplacement An object that is put to the stack instead.

     * @return Error number. @c KErrNone if the operation succeeds.

     *         @c KErrNotFound if @c 'aToBeReplaced' object cannot be

     *         found from the stack.

     */

    IMPORT_C TInt ReplaceL( CAknNavigationDecorator& aToBeReplaced,

                            CAknNavigationDecorator& aReplacement );

    /**

     * Returns the object constructed from resources with

     * @c ConstrucFromResourcesL() -method to the application.

     * Ownership of the object is transferred to the application.

     *

     * @return Navigation Decorator object that was

     *         created from resources.

     */

    IMPORT_C CAknNavigationDecorator* ResourceDecorator();

    /**

     * This non-exported method returns reference to navi arrow bitmaps.

     *

     * @param  aId  Id of the bitmap.

     * @return Reference to the navi arrow bitmap.

     */

    CFbsBitmap& NaviArrowBitmap( TInt aId );

public:

    /**

     * This method can be used to set preferred layout style for navi decorator

     * objects that are pushed into navistack.

     * Given layout is applied to objects only if that object supports it and

     * status pane layout allows that mode to be used.

     *

     * @since 3.1

     *

     * @param aLayoutStyle CAknNavigationDecorator::ENaviControlLayoutNormal,

     *                     CAknNavigationDecorator::ENaviControlLayoutNarrow or

     *                     CAknNavigationDecorator::ENaviControlLayoutWide

     *

     */

    IMPORT_C void SetPreferredNaviDecoratorLayoutStyle( TInt aLayoutStyle );

    /**

     * Static method to return current color scheme.

     * @return Current color scheme value.

     */

    IMPORT_C static TInt ColorScheme();

    /**

     * Used by the UI framework. Notifies context and signal

     * panes wheter navi wipe graphichs is to be drawn or not.

     */

    void NotifyNaviWipeStatusL();

    /**

     * Gets current wipe bitmap for navi pane.

     *

     * @return Wipe bitmap Id

     */

    static TInt CurrentNaviWipeBitmap();

    /**

     * From @c CCoeControl.

     *

     * Handles pointer events

     *

     * @param aPointerEvent The pointer event.

     */

    IMPORT_C void HandlePointerEventL(const TPointerEvent& aPointerEvent);

    /**

     * Used to notify the navi pane when it goes to background.

     * @internal Used by the UI framework.

     */

    void HandleLosingForeground();

    /**

     * Used to notify the navi pane when it gains foreground.

     * @internal Used by the UI framework.

     */

    void HandleGainingForegroundL();

protected: // from CCoeControl

    /**

     * From @c CCoeControl.

     *

     * Handles the size change events.

     */

    IMPORT_C virtual void SizeChanged();

    /**

     * From @c CCoeControl.

     *

     * Handles a change to the control's resources of type @c aType

     * which are shared across the environment, e.g. color scheme change.

     *

     * @param aType Event type.

     */

    IMPORT_C virtual void HandleResourceChange(TInt aType);

    /**

     * From @c CCoeControl.

     *

     * Returns number of controls inside the context pane control.

     *

     * @return Number of component controls.

     */

    IMPORT_C virtual TInt CountComponentControls() const;

    /**

     * From @c CCoeControl.

     *

     * Returns a control determined by control id.

     *

     * @param aIndex Index of a control to be returned.

     * @return Pointer to control.

     */

    IMPORT_C virtual CCoeControl* ComponentControl(TInt aIndex) const;

protected: // from MCoeControlObserver

    /**

     * From @c  MCoeControlObserver.

     *

     * Handles Control event.

     *

     * @param aControl Control that caused the event.

     * @param aEventType Type of the event.

     */

    IMPORT_C void HandleControlEventL(CCoeControl* aControl,

                                      TCoeEvent aEventType);

private: // from CCoeControl

    IMPORT_C virtual void Draw(const TRect& aRect) const;

private:

    /**

    * From CAknControl

    */

    IMPORT_C void* ExtensionInterface( TUid aInterface );

public:

    /**

     * Not used / implemented

     *

     * @deprecated

     *

     * @since S60 3.0

     *

     * @return @c EFalse

     */

    TBool NaviWipeUsed() const;

    /**

     * Gets navi bitmap.

     *

     * @return Bitmap's colour.

     */

    CFbsBitmap* NaviColorBitmap() const;

    /**

     * Not used / implemented

     *

     * @deprecated

     *

     * @since S60 3.0

     */

    static void SetBackgroundContextAttributes( CCoeControl* aControl,

                                                TBool aNaviWipeUsed );

private:

    TBool IsFepOwnedEditorIndicatorControl(

        CAknNavigationDecorator* aDecorator ) const;

    void HandleVisibilityOfNonFepOwnedIndicatorControl(

        CAknNavigationDecorator* aDecorator, TBool aVisible);

    /**

    * Checks wheter default navi wipe bitmap can be drawn to navipane and draws

    * it if it is possible.

    *

    * @since S60 2.6

    * @param aGc Used graphics context.

    * @param aRect Rect of the navipane.

    * @return @c ETrue if draw operation was done, otherwise @c EFalse.

    *

    */

    TBool DrawDefaultNaviWipe(CWindowGc& aGc, const TRect& aRect) const;

    /**

    * Checks wheter default navi solid bitmap can be drawn to navipane and draws

    * it if it is possible.

    *

    * @since S60 2.6

    * @param aGc Used graphics context.

    * @param aRect Rect of the navipane.

    * @return ETrue if draw operation was done, otherwise EFalse.

    *

    */

    TBool DrawDefaultNaviSolid(CWindowGc& aGc, const TRect& aRect) const;

    /**

    * Checks wheter skinned navi wipe bitmap can be drawn to navipane and draws