/*

* Copyright (c) 2008-2009 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:    Cloud View Context menu control class 

 *

*/

// Alf Headers

#include <alf/alflayout.h>

#include <alf/alfgridlayout.h> // For CAlfGridLayout

#include <alf/alfborderbrush.h> // For CAlfBorderBrush

#include <alf/alfroster.h> // For CalfRoster

#include <alf/alfanchorlayout.h>

#include <alf/alftextvisual.h>

#include <alf/alfimagevisual.h>

#include <alf/alfbrusharray.h>

#include <alf/alftextstyle.h>

#include <alf/alfenv.h>

#include <alf/alfeventhandler.h>

#include <alf/alfutil.h>

#include <alf/alftexture.h>

#include <alf/alfcurvepath.h>

#include <alf/alflinevisual.h>

#include <alf/alfevent.h>

#include <alf/alfdisplay.h>

#include <alf/alfframebrush.h>

#include <StringLoader.h>

// Photos Headers

#include "glxtagscontextmenucontrol.h"

#include "glxcommandfactory.h"

#include <mglxmedialist.h>                          //for medialist

#include <glxuiutility.h>

#include <glxtexturemanager.h>                      // Texturemanager

#include <glxicons.mbg>                             // icons

#include <glxuistd.h>                               // Attribute fetch priority

#include <glxcommandhandlers.hrh>

#include "glxbubbletimer.h"                         //for timer functionality

#include <glxtagsbrowserview.rsg>                   // For resources

#include <glxtracer.h>                              // For Logs

//Left & Top padding of text within text box (In Pixels)

const TInt KMinimalGap = 5;         

//Height of each menu item

const TInt KReqHeightPerMenuItem = 47;

//Number of menu items present in stylus menu

const TInt KNumofMenuItems = 3;

//Number of columns present in grid control showing menu  

const TInt KNoOfColumns = 1;

//Highest possible value to make control opaque

const TReal KOpacityOpaque = 1.0;

//lowest possible value to make control completely transparent

const TReal KOpacityTransparent = 0.0;

const TPoint KDummyPoint(500, 500);

//6 Seconds delay for menu control visibility on screen 

const TInt KTimerDelay = 6000000;

//Control complete height

const TInt KGridHeight = ((KReqHeightPerMenuItem * KNumofMenuItems) + (KMinimalGap * (KNumofMenuItems + 1)));

//Text size for menu items

const TInt KTextSizeInPixels = 20;

//X shrink factor for stylus menu border to be drawn/visible

const TInt KShrinkXCoord = 5;

//Y shrink factor for stylus menu border to be drawn/visible

const TInt KShrinkYCoord = 5;

//Padding value for Minimum width for control

const TInt KWidthPadding = 30;

//Padding value for Minimum spacing for line separators

const TInt KLinePadding = 5;

//Padding value for right margin

const TInt KRightMargin = 10;

//Context menu separator line thickness value

const TReal KSeparatorLineThickness = 0.2;

//For Tagging the visuals

_LIT8(KTagSlideshow, "SS");

_LIT8(KTagRename, "Ren");

_LIT8(KTagDelete, "Del");

// --------------------------------------------------------------------------- 

// NewL()

// --------------------------------------------------------------------------- 

//

CGlxTagsContextMenuControl* CGlxTagsContextMenuControl::NewL( 

        MGlxItemMenuObserver& aItemMenuObserver)

    {

    TRACER("GLX_CLOUD::CGlxTagsContextMenuControl::NewL");

    CGlxTagsContextMenuControl* self = CGlxTagsContextMenuControl::NewLC(

            aItemMenuObserver);

    CleanupStack::Pop(self);

    return self;

    }

// --------------------------------------------------------------------------- 

// NewLC()

// --------------------------------------------------------------------------- 

//

CGlxTagsContextMenuControl* CGlxTagsContextMenuControl::NewLC( 

        MGlxItemMenuObserver& aItemMenuObserver )

    {

    TRACER("GLX_CLOUD::CGlxTagsContextMenuControl::NewLC");

    CGlxTagsContextMenuControl* self =

            new (ELeave) CGlxTagsContextMenuControl(aItemMenuObserver);

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

// --------------------------------------------------------------------------- 

// CGlxTagsContextMenuControl()

// --------------------------------------------------------------------------- 

//

CGlxTagsContextMenuControl::CGlxTagsContextMenuControl(

        MGlxItemMenuObserver& aItemMenuObserver) :

    iItemMenuObserver(aItemMenuObserver), iCommandId(KErrNotFound)

    {

    TRACER("GLX_CLOUD::CGlxTagsContextMenuControl::CGlxTagsContextMenuControl");

    //Nothing more to do for now

    }

// --------------------------------------------------------------------------- 

// ConstructL()

// --------------------------------------------------------------------------- 

//

void CGlxTagsContextMenuControl::ConstructL()

    {

    TRACER("GLX_CLOUD::CGlxTagsContextMenuControl::ConstructL");

    CGlxUiUtility* utility = CGlxUiUtility::UtilityL();

    CleanupClosePushL( *utility );

    iAlfEnv = utility->Env();

    CleanupStack::PopAndDestroy( utility );

    CAlfControl::ConstructL(*iAlfEnv);

    iTimer = CGlxBubbleTimer::NewL(this);

    iMainVisual = CAlfAnchorLayout::AddNewL(*this);

    iMainVisual->SetFlag(EAlfVisualFlagManualLayout);

    iMainVisual->SetPos(TAlfRealPoint(KDummyPoint));

    // Create a new 3x1 grid layout visual.

    iGrid = CAlfGridLayout::AddNewL(*this, KNoOfColumns, KNumofMenuItems,

            iMainVisual);//columns, rows

    iGrid->SetFlag(EAlfVisualFlagManualLayout);

    //Finally create the menu list that will appear in screen

    CreateMenuListL(CreateFontL());

    CalculateMaxWidth();

    iMainVisual->SetSize(TSize(KWidthPadding + iMaxTextWidth, KGridHeight));

    iGrid->SetInnerPadding(TPoint(KLinePadding,KLinePadding));

    const TRect gridSize(TPoint(KLinePadding,KLinePadding),TSize(KTextSizeInPixels + iMaxTextWidth, KGridHeight - 10));

    iGrid->SetRect(TAlfRealRect(gridSize));

    iMainVisual->EnableBrushesL(ETrue);

    TRect outerRect(TRect(TPoint(KDummyPoint),

                    TSize(KWidthPadding + iMaxTextWidth, KGridHeight)));

    TRect innerRect(outerRect);

    innerRect.Shrink(KShrinkXCoord, KShrinkYCoord);

    CAlfFrameBrush* frameBrush = CAlfFrameBrush::NewLC(*iAlfEnv,

                                        KAknsIIDQsnFrPopupSub);

    frameBrush->SetFrameRectsL(innerRect, outerRect);

    iMainVisual->Brushes()->AppendL(frameBrush, EAlfHasOwnership);

    CleanupStack::Pop(frameBrush);

    DrawLineSeparatorsL();

	ShowItemMenuL(EFalse);

    }

// --------------------------------------------------------------------------- 

// ~CGlxTagsContextMenuControl()

// --------------------------------------------------------------------------- 

//

CGlxTagsContextMenuControl::~CGlxTagsContextMenuControl()

    {

    TRACER("GLX_CLOUD::CGlxTagsContextMenuControl::CGlxTagsContextMenuControl");

    if (iMainVisual)

        {

        iMainVisual->RemoveAndDestroyAllD();

        iMainVisual = NULL;

        }

    if ( iTimer)

        {

        iTimer->Cancel();//cancels any outstanding requests

        delete iTimer;

        iTimer = NULL;

        }

    }

// --------------------------------------------------------------------------- 

// CreateFont()

// --------------------------------------------------------------------------- 

//

TInt CGlxTagsContextMenuControl::CreateFontL()

    {

    TRACER("GLX_CLOUD::CGlxTagsContextMenuControl::CreateFont");

    // Create a new style based on the required font

    CAlfTextStyleManager& styleMan = iAlfEnv->TextStyleManager();

    // remember its id for return later

    TInt id = styleMan.CreatePlatformTextStyleL(EAlfTextStyleNormal);

    // Get style. It is not owned

    CAlfTextStyle* style = styleMan.TextStyle(id);

    // Set this style to have required size and to be normal weight

    style->SetTextSizeInPixels(KTextSizeInPixels);

    style->SetBold(ETrue);

    return id;

    }

// --------------------------------------------------------------------------- 

// CreateMenuListL()

// --------------------------------------------------------------------------- 

//

void CGlxTagsContextMenuControl::CreateMenuListL(TInt aFontId)

    {

    TRACER("GLX_CLOUD::CGlxTagsContextMenuControl::CreateMenuList");

    TRgb color;

    //Gets the color of the text specific to skin 

    AknsUtils::GetCachedColor(AknsUtils::SkinInstance(), color,

            KAknsIIDQsnTextColors, EAknsCIQsnTextColorsCG20);

    //Loading the strings from rss

    HBufC* renameTitle = StringLoader::LoadLC( R_GLX_TAGS_RENAME_TITLE );

    HBufC* slideshowTitle = StringLoader::LoadLC( R_GLX_TAGS_SLIDESHOW_TITLE );

    HBufC* deleteTitle = StringLoader::LoadLC( R_GLX_TAGS_DELETE_TITLE );

    iSlideshowTextVisual = CAlfTextVisual::AddNewL(*this, iGrid);

    iSlideshowTextVisual->SetTagL(KTagSlideshow);

    iSlideshowTextVisual->SetTextStyle(aFontId);

    iSlideshowTextVisual->SetColor(color);

    iSlideshowTextVisual->SetTextL(*slideshowTitle);

    iSlideshowTextVisual->SetOffset(TAlfTimedPoint(10,0));

    iSlideshowTextVisual->SetAlign(EAlfAlignHLocale, EAlfAlignVCenter);

    iDeleteTextVisual = CAlfTextVisual::AddNewL(*this, iGrid);

    iDeleteTextVisual->SetTagL(KTagDelete);

    iDeleteTextVisual->SetTextStyle(aFontId);

    iDeleteTextVisual->SetColor(color);

    iDeleteTextVisual->SetTextL(*deleteTitle);

    iDeleteTextVisual->SetOffset(TAlfTimedPoint(10,0));

    iDeleteTextVisual->SetAlign(EAlfAlignHLocale, EAlfAlignVCenter);

    iRenameTextVisual = CAlfTextVisual::AddNewL(*this, iGrid);

    iRenameTextVisual->SetTagL(KTagRename);

    iRenameTextVisual->SetTextStyle(aFontId);

    iRenameTextVisual->SetColor(color);

    iRenameTextVisual->SetTextL(*renameTitle);

    iRenameTextVisual->SetOffset(TAlfTimedPoint(10,0));

    iRenameTextVisual->SetAlign(EAlfAlignHLocale, EAlfAlignVCenter);

    CleanupStack::PopAndDestroy(deleteTitle); // for deleteTitle

    CleanupStack::PopAndDestroy(slideshowTitle);// slideshowTitle

    CleanupStack::PopAndDestroy(renameTitle);// renameTitle

    }

// --------------------------------------------------------------------------- 

// SetDisplayL()

// --------------------------------------------------------------------------- 

//

void CGlxTagsContextMenuControl::SetDisplay(const TPoint& aPoint)

    {

    TRACER("GLX_CLOUD::CGlxTagsContextMenuControl::SetDisplayL");

    //if already started , cancel it

    if(iTimer && iTimer->IsActive())

        {

        iTimer->Cancel();//cancels any outstanding requests

        }

    TInt upperYPos = aPoint.iY - KMinimalGap;

    TInt XPos = aPoint.iX;

    //Preferred is to display in upper area

    TInt upperDisplayableHeight = upperYPos - iViewableRect.iTl.iY;

    TInt rightDisplayableWidth = iViewableRect.iBr.iX - (XPos + KRightMargin

            + KWidthPadding);

    //always draw above

    if(rightDisplayableWidth < iMaxTextWidth)

        {

        XPos = aPoint.iX - iMaxTextWidth;

        }

    if(upperDisplayableHeight < KGridHeight)

        {

        iMainVisual->SetPos(TAlfRealPoint(XPos , upperYPos ));

        }

    else

        {

        iMainVisual->SetPos(TAlfRealPoint(XPos , upperYPos - KGridHeight));

        }

	if ( iTimer)

	    {

		iTimer->Cancel();          //cancels any outstanding requests

	    iTimer->SetDelay(KTimerDelay);

		}

    }

// --------------------------------------------------------------------------- 

// ShowItemMenuL()

// --------------------------------------------------------------------------- 

//

void CGlxTagsContextMenuControl::ShowItemMenuL(TBool aShow)

    {

    TRACER("GLX_CLOUD::CGlxTagsContextMenuControl::ShowItemMenuL");

    if(aShow)

        {

        iMainVisual->SetOpacity(KOpacityOpaque);    

        iItemMenuVisibility = ETrue;

        }

    else

        {

        iMainVisual->SetOpacity(KOpacityTransparent);

        iRenameTextVisual->EnableBrushesL(EFalse);

        iDeleteTextVisual->EnableBrushesL(EFalse);

        iSlideshowTextVisual->EnableBrushesL(EFalse);

        iItemMenuVisibility = EFalse;

        iMainVisual->SetPos(TAlfRealPoint(KDummyPoint));

        }

    }

// --------------------------------------------------------------------------- 

// ItemMenuVisibility()

// --------------------------------------------------------------------------- 

//

TBool CGlxTagsContextMenuControl::ItemMenuVisibility()

    {

    return iItemMenuVisibility;

    }

// --------------------------------------------------------------------------- 

// OfferEventL()

// --------------------------------------------------------------------------- 

//

TBool CGlxTagsContextMenuControl::OfferEventL(const TAlfEvent& aEvent)

    {

    TRACER("GLX_CLOUD::CGlxTagsContextMenuControl::OfferEventL");

    TBool consumed = EFalse;

    if (aEvent.IsPointerEvent() && iItemMenuVisibility )

        {

        if (aEvent.PointerDown())

            {

            iCommandId = KErrNotFound;

            Display()->Roster().SetPointerEventObservers(

                    EAlfPointerEventReportDrag

                            + EAlfPointerEventReportLongTap

                            + EAlfPointerEventReportUnhandled, *this);

            if (iItemMenuVisibility)

                {

                CAlfVisual* onVisual = aEvent.Visual();

                CAlfFrameBrush* brush = CAlfFrameBrush::NewLC(*iAlfEnv,

                        KAknsIIDQsnFrList);

                TRect textVisualRect = TRect(TPoint(

                        iSlideshowTextVisual->Pos().IntValueNow()), TSize(

                        iSlideshowTextVisual->Size().ValueNow().AsSize()));

                TRect innerRect(textVisualRect);

                innerRect.Shrink(KShrinkXCoord, KShrinkYCoord);

                brush->SetFrameRectsL(innerRect, textVisualRect);

                iTimer->Cancel(); //cancels any outstanding requests

                if (AlfUtil::TagMatches(onVisual->Tag(), KTagSlideshow))

                    {

                    iSlideshowTextVisual->EnableBrushesL(ETrue);

                    iSlideshowTextVisual->Brushes()->AppendL(brush,

                            EAlfHasOwnership);

                    iCommandId = EGlxCmdSlideshowPlay;

                    }

                else if (AlfUtil::TagMatches(onVisual->Tag(), KTagDelete))

                    {

                    iDeleteTextVisual->EnableBrushesL(ETrue);

                    iDeleteTextVisual->Brushes()->AppendL(brush,

                            EAlfHasOwnership);

                    iCommandId = EGlxCmdDelete;

                    }

                else if (AlfUtil::TagMatches(onVisual->Tag(), KTagRename))

                    {

                    iRenameTextVisual->EnableBrushesL(ETrue);

                    iRenameTextVisual->Brushes()->AppendL(brush,

                            EAlfHasOwnership);

                    iCommandId = EGlxCmdRename;

                    }

                consumed = ETrue;

                CleanupStack::Pop(brush);

                }//End of iItemMenuVisibility check

            }//End of Pointer down event 

        else if (aEvent.PointerUp())

            {

            if (iCommandId >= 0)

                {

                TBool eventInsideControl = HitTest(

                        aEvent.PointerEvent().iParentPosition);

                //If Up event is received only within Menu control, handle the command

                if (eventInsideControl)

                    {

                    ShowItemMenuL(EFalse);

                    iItemMenuObserver.HandleGridMenuListL(iCommandId);

                    iCommandId = KErrNotFound;

                    }

                else

                    {

                    HandleUpEventL();

                    }

                }

            consumed = ETrue;

            }

        else if (aEvent.PointerEvent().EDrag)

            {

            TBool eventInsideControl = HitTest(

                    aEvent.PointerEvent().iParentPosition);

            if (!eventInsideControl)

                {

                HandleUpEventL();

                }

            consumed = ETrue;

            }

        consumed = ETrue;

        }

    return consumed;

    }

// ---------------------------------------------------------------------------

// TimerCompleteL()

// ---------------------------------------------------------------------------

//

void CGlxTagsContextMenuControl::TimerCompleteL()

    {

    TRACER("GLX_CLOUD::CGlxTagsContextMenuControl::TimerCompleteL");

    ShowItemMenuL(EFalse);

    }

// --------------------------------------------------------------------------- 

// SetViewableRect()

// --------------------------------------------------------------------------- 

//

void CGlxTagsContextMenuControl::SetViewableRect(TRect aRect)

    {

    TRACER("GLX_CLOUD::CGlxTagsContextMenuControl::SetViewableRect");

    iViewableRect.SetRect(aRect.iTl.iX, aRect.iTl.iY, 

                                aRect.iBr.iX, aRect.iBr.iY);

    }

// --------------------------------------------------------------------------- 

// CalculateMaxWidth()

// --------------------------------------------------------------------------- 

//

void CGlxTagsContextMenuControl::CalculateMaxWidth()

    {

    TRACER("GLX_CLOUD::CGlxTagsContextMenuControl::CalculateMaxWidth");

    iMaxTextWidth

            = (iSlideshowTextVisual->TextExtents().iWidth

                    > iRenameTextVisual->TextExtents().iWidth

                              ? iSlideshowTextVisual->TextExtents().iWidth

                                 : iRenameTextVisual->TextExtents().iWidth);

    iMaxTextWidth

            = (iMaxTextWidth > iDeleteTextVisual->TextExtents().iWidth

                              ? iMaxTextWidth

                                 : iDeleteTextVisual->TextExtents().iWidth);

    }

// --------------------------------------------------------------------------- 

// HandleUpEventL()

// --------------------------------------------------------------------------- 

//

void CGlxTagsContextMenuControl::HandleUpEventL()

    {

    TRACER("GLX_CLOUD::CGlxTagsContextMenuControl::HandleUpEventL");

    if(iCommandId >=0 && iItemMenuVisibility)

        {

        iCommandId = KErrNotFound;

        iRenameTextVisual->EnableBrushesL(EFalse);

        iDeleteTextVisual->EnableBrushesL(EFalse);

        iSlideshowTextVisual->EnableBrushesL(EFalse);

        iTimer->SetDelay(KTimerDelay);

        }

    }

// --------------------------------------------------------------------------- 

// DrawLineSeparatorsL()

// --------------------------------------------------------------------------- 

//

void CGlxTagsContextMenuControl::DrawLineSeparatorsL()

    {

    TRACER("GLX_CLOUD::CGlxTagsContextMenuControl::DrawLineSeparators");

    TRgb color;

    //Gets the color of the line specific to skin 

    AknsUtils::GetCachedColor(AknsUtils::SkinInstance(), color,