/*

* Copyright (c) 1997-2009 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:

*

*/

#if !defined(__EIKCAPC_H__)

#define __EIKCAPC_H__

#if !defined(__COECNTRL_H__)

#include <coecntrl.h>

#endif

#if !defined(__FEPBASE_H__)

#include <fepbase.h>

#endif

#if !defined(__EIKLABEL_H__)

#include <eiklabel.h>

#endif

#include <eikdialg.h>

#include <eikdpage.h>

#include <AknControl.h>

#include <AknsConstants.h>

class CEikImage ;

class CEikDialogPage;

// Forward declaration of types used in layout routines.

class CAknPopupField;

class CAknSlider;

class CEikEdwin;

class CEikMfne; 

class CEikSecretEditor;

class CEikCapCLabel ;

class CEikCapCExtension;

class MPointerEventObserver;

class MAknsControlContext;

/** CaptionedControl

 *

 * CaptionedControl is part of the dialogs. All dialogs and forms use captionedcontrol

 * as a control for one DLG_LINE. Each DLG_LINE has one captionedcontrol in it.

 * 

 * Rectangle of the captionedcontrol is single form field / form line or DLG_LINE's

 * rectangle dependent on the dialog type.

 */

class CEikCaptionedControl : public CAknControl, public MCoeCaptionRetrieverForFep, public MCoeControlObserver

    {

    friend class CEikCapCExtension;

public:

    enum TSpaceSharingFlags

        {

        EIfTooSmallCtlGetsWidthLast         =0x0,

        EIfTooSmallCtlGetsWidthFirst        =0x1,

        EIfTooSmallCtlGetsEqualShareOfWidth =0x2,

        EIfTooBigCtlStaysMinHeight          =0x4,

        EIfTooBigCtlStaysMinWidth           =0x8,

        EIfTooBigCtlStaysMinSize            =0xc,

        EIfTooSmallDontStrech               =0x10

        };

    enum TCaptionExpandingState

        {

        EInitial = 0,

        EExtended =1,

        ERetracted =2

        };

public:

 	/** Constructor

 	 */	

    IMPORT_C CEikCaptionedControl();

    /** Destructor

     */

    IMPORT_C ~CEikCaptionedControl();

public: // new functions

	/** SetUsesEars() sets a flag Uses Ears.

	 */

    IMPORT_C void SetUsesEars();

    /** SetSpaceSharingFlags() sets flags for space sharing

     */

    IMPORT_C void SetSpaceSharingFlags(TInt aFlags);

    /** SetExtraAscent() modifies layout to include extra ascent for fonts

     */

    IMPORT_C void SetExtraAscent();

    /** SetCaptionL() Sets label of the DLG_LINE

     * @param aText Descriptor

     */

    IMPORT_C void SetCaptionL(const TDesC& aText);

    /** SetTrailerL() Sets trailer

     * Should not be used

     * @param aText Descriptor

     */

    IMPORT_C void SetTrailerL(const TDesC& aText);

	/** Sets the captionedcontrol to be currently focused or not

     * @param aSelected whether captionedcontrol is focused

	 */

    IMPORT_C void SetCurrent(TBool aSelected);

	/** Updates captionedcontrol's dimmed state

	 */

    IMPORT_C void CheckDimmedDisplayState();

	/** Sets minimumsizes to zero

	 */

    IMPORT_C void ResetMinimumSizes();

	/** Whether captionedcontrol is latent

	 *

	 * @return true if is latent

	 */

    IMPORT_C TBool IsLatent() const;

	/** Sets captionedcontrol latent status

	 */

    IMPORT_C void SetLatent(TBool aLatent);

	/** Whether captionedcontrol has latent group following it

     * @returns true if has latent group following

	 */

    IMPORT_C TBool LatentGroupLineFollows() const;

	/** Sets latent group following flag

     * @param aLglf true if latent group following

	 */

    IMPORT_C void SetLatentGroupLineFollows(TBool aLglf);

	/** Whether there is a divider after the captionedcontrol

	 */

    IMPORT_C TBool DividerAfter() const;

    /** Sets divider after the captionedcontrol

     */

    IMPORT_C void SetDividerAfter(TBool aDividerAfter);

    /** Whether captionedcontrol consumes enter key

     */

    IMPORT_C TBool TakesEnterKey() const;

    /** Sets captionedcontrol to take enter key

     * @param aTakesEnter true if takes enter key, false if not

     */

    IMPORT_C void SetTakesEnterKey(TBool aTakesEnter);

    /** Whether offers hot keys

     * @return boolean true if offers hotkeys

     */

    IMPORT_C TBool OfferHotKeys() const;

    /** Sets captionedcontrol to offer hotkeys

     */

    IMPORT_C void SetOfferHotKeys(TBool aOffer);

    /**

     * From MCoeControlObserver:

     * Acts upon changes in the hosted control's state. 

     * 

     * This class's implementation handles events from MFNE editor editing

     * buttons in touch enabled builds

     *

     * @param	aControl	The control changing its state (not used)

     * @param	aEventType	The type of control event 

     */

	IMPORT_C virtual void HandleControlEventL(CCoeControl* aControl,TCoeEvent aEventType);

public:

    TInt MaximumNumberOfControlLinesOnVisiblePage() const;

	TInt NumberOfLines() const;

public:

    TBool ControlIsAnEdwin(TInt aControlType) const;

    TBool ControlIsAMfne(TInt aControlType) const;

    TBool ControlIsAPopfield(TInt aControlType) const;

    TBool ControlIsASecretEditor(TInt aControlType) const;

    TBool ControlIsASlider(TInt aControlType) const;

    TBool ControlIsAColourSelGrid(TInt aControlType) const;

	TInt ControlType() const;

public: // from CCoeControl

    /** MinimumSize() returns minimum size of the control

     */

    IMPORT_C TSize MinimumSize();

    /** ConstructFromResourceL() constructs the captionedcontrol from DLG_LINE resource

     *

     * usually called with the following code:

     * TResourceReader reader;

     * iCoeEnv->CreateResourceReaderLC(reader, resId);

     * control->ConstructFromResourceL(reader);

     * CleanupStack::PopAndDestroy();

     */

    IMPORT_C void ConstructFromResourceL(TResourceReader& aReader);

    /** OfferKeyEventL() handles key events

     */

    IMPORT_C TKeyResponse OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType);

    /** GetColorUseListL() gets color use list

     */

    IMPORT_C virtual void GetColorUseListL(CArrayFix<TCoeColorUse>& aColorUseList) const; // not available before Release 005u

    /** HandleResourceChange handles several kinds of resource change event

     */

    IMPORT_C virtual void HandleResourceChange(TInt aType);         // not available before Release 005u

    /** Provides ability to get input capabilities needed for fep

     */

    IMPORT_C TCoeInputCapabilities InputCapabilities() const;

    /** SetDimmed sets captionedcontrol to dimmed state

     */

    IMPORT_C void SetDimmed(TBool aDimmed);

    /** HandlePointerEventL handles touch pointer events

     */

    IMPORT_C void HandlePointerEventL(const TPointerEvent& aPointerEvent);

public:

    void RegisterPageWithCaptionControl(CEikDialogPage* aPage);

private: // from CCoeControl

    IMPORT_C TInt CountComponentControls() const;

    IMPORT_C CCoeControl* ComponentControl(TInt aIndex) const;

    IMPORT_C void SizeChanged();

    IMPORT_C void FocusChanged(TDrawNow aDrawNow);

protected: // from CCoeControl

    IMPORT_C void Draw(const TRect& aRect) const;

    IMPORT_C void WriteInternalStateL(RWriteStream& aWriteStream) const;

private: // from CCoeControl

    IMPORT_C void Reserved_2();

    // from MCoeCaptionRetrieverForFep

    IMPORT_C virtual void GetCaptionForFep(TDes& aCaption) const;

    IMPORT_C virtual void MCoeCaptionRetrieverForFep_Reserved_1();

    IMPORT_C virtual void MCoeCaptionRetrieverForFep_Reserved_2();

private:

    /**

    * From CAknControl

    */

    IMPORT_C void* ExtensionInterface( TUid aInterface );

protected: // from MObjectProvider

    IMPORT_C TTypeUid::Ptr MopSupplyObject(TTypeUid aId);

public:

    /** SetToolTipTextL() sets tooltip text

     * @param aText descriptor for tooltip text

     */

    IMPORT_C void SetToolTipTextL( const TDesC& aText ) ;

    /** Ability to query tooltip text string

     */

    IMPORT_C const TDesC* ToolTipText() const ;

    /** SetBitmapFromFileL() sets icon contents for the captionedcontrol

     */

    IMPORT_C void SetBitmapFromFileL( const TDesC& aFilename,TInt aMainId,TInt aMaskId =-1 ) ;

    /** SetEditable sets captionedcontrol to editable state

     */

    IMPORT_C void SetEditableL( TBool aEditable, TBool aShowEmptyFields = ETrue ) ;

    IMPORT_C void SetFormFlags( TInt aFlags ) ;

    TBool HasSeparator() const;

    /** GetFullCaptionText() gets caption descriptor

     *

     */

    IMPORT_C const TPtrC GetFullCaptionText() const;

    TBool   IsDisplayable() const;

    /** 

     * Allows clients of CEikCaptionedControl to turn off drawing 

     * of white background of captionedcontrol.

     *

     * @since 2.1

     */

    IMPORT_C void SetDrawNoWhiteBackground(TBool aEnabled); // for list queries with find.

    /**

    * In case of an editor control residing in a form,

    * sets up a pictograph animation callback to redraw the form highlight

    * control when pictograph animations are updated.

    */

    void SetPictographCallBack();

    /**

    * Sets icon and sets its size.

    * @param aBitmap a bitmap which has already been loaded. Must not be NULL.

    * @param aMask a mask bitmap which has already been loaded. Can be NULL.

    * Takes ownership of the bitmap objects.

    * @since 2.8

    */

    IMPORT_C void SetIconL( CFbsBitmap* aBitmap, CFbsBitmap* aMask ); 

    /**

     * Sets one of the two small indicator icons

     * @param aIcon a index 0 or 1 depending on which icon to set

     * @param aBitmap a bitmap pointer or NULL

     * @param aMask a mask pointer or NULL

     */

	IMPORT_C void SetIndicatorIconL( TInt aIcon, CFbsBitmap *aBitmap, CFbsBitmap *aMask );

    /** SetPointerEventObserver

     * Low level observer for touch related pointer events.

     * This can be used to receive low level pointer events.

     */

	IMPORT_C void SetPointerEventObserver(MPointerEventObserver *aObserver);

	MPointerEventObserver *PointerEventObserver() const;

    /** Sets the captionedcontrol to be currently focused or not.

     * @param aSelected whether captionedcontrol is focused

     * @param aRedraw whether redraw is needed or not

     */    

    void SetCurrent(TBool aSelected, TBool aRedraw );

private: // new functions

    void StretchComponents();

    void SquashComponents();

    void CalculateNumberOfLinesForControl( TInt aLines ) ;

    static TInt PictographAnimationCallBack( TAny* aPtr );

    /**

    * Sets a size for a bitmap that has already been loaded.

    * @since 2.8

    */    

    void SetIconSizeL(CFbsBitmap* aBitmap);

    /**

    * Gets control context for the given control

    * @param aDialog a dialog to get context for

    * If aDialog provided does not exist, TODO

    */

    MAknsControlContext* GetDialogControlContext(const CCoeControl* aDialog) const;

    /**

     * Searches recursively for control's parents until it finds a window owning control

     */

    const CCoeControl* WindowOwningParent() const;

public:

    /**

     * Positions form components in accordance with dialog page flags. 

     * If the dialog instance is not registered, them flags set with SetFormFlags() are used. 

     */	

    void PositionFormComponents();

    void ScrollBackEditorL();

public:

    void DrawClosingLine() const;

	const CEikDialogPage* DialogPage() const { return iDialogPage; }

    TBool PressedDownState() const;

	void SetPressedDownState( TBool aPressed );

private:

    void SetElementBrushColorsL( TRgb aColor ) ;

    void SetElementTextColorsL( TRgb aColor ) ;

    TBool ShowBitmap() const;

    void LayoutBitmap(const TRect& aRect);

    void LayoutCaption(const TRect& aRect);

    void DoFormCaptionSettingsL(const TDesC& aText);

private:

    static void FormLayoutControlBitmap(CEikImage* aBitmap, const TRect& aParent, TBool aIsEditable, TBool aSingleLayout, TInt aNumberOfLines);

    void FormLayoutControlEdwin(CEikEdwin* aEdwin, const TRect& aParent, TBool aIsEditable, TBool aSingleLayout, TInt aNumberOfLines, TBool aBitmapPresent, TBool aIsFocused);

    void FormLayoutControlLabel(CEikLabel* aSlider, const TRect& aParent, TBool aIsEditable, TBool aSingleLayout, TInt aNumberOfLines, TBool aLayoutWithBitmap, TBool aIsFocused, TInt aIconCount);

    void FormLayoutControlMfne(CEikMfne* aMfne,  const TRect& aParent, TBool aIsEditable, TBool aSingleLayout, TInt aNumberOfLines, TBool aBitmapPresent, TBool aIsFocused );

    void FormLayoutControlPopfield(CAknPopupField* aPopfield, const TRect& aParent, TBool aIsEditable, TBool aSingleLayout, TInt aNumberOfLines, TBool aBitmapPresent, TBool aIsFocused);

    void FormLayoutControlSecretEditor(CEikSecretEditor* aSecretEd, const TRect& aParent, TBool aIsEditable, TBool aSingleLayout, TInt aNumberOfLines, TBool aBitmapPresent, TBool aIsFocused );

    static void FormLayoutControlSlider(CAknSlider* aSlider, const TRect& aParent, TBool aIsEditable, TBool aSingleLayout, TInt aNumberOfLines, TBool aBitmapPresent);

    /*	

    *

    * Access method for use in a CAknForm context. 

    *

    * @return   Enumeration for layout for the CAknForm

    *           Layout value is received from owning CEikDialogPage, if it is not defined then EEikFormUseDoubleSpacedFormat flag is checked.

    *           Default value is CEikDialogPage::ESingle

    */

    CEikDialogPage::TFormLayoutSelection FormLayout() const;

    /**

    * Draws the separator between (at the top of current ) caption control(s)

    *

    * @param    gc  Current graphics contect

    */

    void DrawFormSeparator( CWindowGc& gc ) const;

    /**

    * Constructs the extension object.

    * There is no base constructL, so it is necessary to call this in several places

    */

    void ConstructExtensionL() ;

    void DrawAsSkinnedForm( CWindowGc& aGc, const TRect& aRect ) const;

    void LayoutSkinControlContexts();

    TBool DrawingSkins() const;

    void DrawAsForm( const TRect& aRect ) const;

    void DrawAsEikonDialog( const TRect& aRect ) const;

    void DrawAsFormInEditMode( const TRect& aRect ) const;

    void DrawAsFormInViewMode( const TRect& aRect ) const;

    void DrawAsFormUnFocusedLine( const TRect& aRect ) const;

    /**

     * Returns correct text color index.

     *

     * @since S60 5.2

     * @return Text color index.

     */

    TAknsQsnTextColorsIndex TextColorIndex() const;

public:

    CCoeControl* iControl;

    CEikCapCLabel* iCaption;

    HBufC* iCaptionText;

    CEikLabel* iTrailer;

    TInt iId;

    TInt iControlType;

    TAny* iReturnValue;

    TBool iIsFormControl ;

    CEikImage* iBitmap ;

    TBool iIsEditable ;

private:

    TInt iSpare1[3];

    TInt iCapCFlags;

    TInt iCaptionWidth;

    TInt iFullWidth;

    TInt iSpare2[9];

    TInt iNumberOfLines;

    friend class CEikCapCArray;

    enum { ENotSupplied = -1 };

    TInt iFlags;

    TInt iSpare3;

    TInt iCaptionFontId;

    TInt iEditorFontId;

    TInt iVerticalLineXPosition;

    CCoeControl* iHighlightControl;

    CEikCapCExtension* iExtension;  // BC extension for additional Data members.

    TInt iSpare4[4];

    TBool iIsCurrentLine;

    CEikDialogPage* iDialogPage;

    };

/*

 * Special Label Class which appends colon to label text

 */

NONSHARABLE_CLASS(CEikCapCLabel) : public CEikLabel

    {

public :

    CEikCapCLabel() ;

    ~CEikCapCLabel() ;

    TBool ColonEnabled() const ;

    void EnableColon( TBool aEnable ) ;

protected :

    void Draw(const TRect& aRect) const ;

    void DrawL(const TRect& aRect) ;

private:

    TBool iIsColonEnabled ;

    } ;

class MPointerEventObserver

	{

public:

	virtual bool PointerEvent(CEikCaptionedControl *aControl, const TPointerEvent& aPointerEvent)=0;

	};

#endif