/*

* Copyright (c) 2007-2008 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:  FreestyleEmailUi folder list visualiser definition

*

*/

#ifndef __FREESTYLEEMAILUI_FOLDERLISTVISUALISER_H__

#define __FREESTYLEEMAILUI_FOLDERLISTVISUALISER_H__

#include <e32base.h>

//<cmail>

#include "fstreelistconstants.h"

//</cmail>

#include "FreestyleEmailUiConstants.h"

#include "FreestyleEmailUiViewBase.h"

#include "FreestyleEmailUiControlBarCallback.h"

#include "fstreelistobserver.h"

#include <alf/alfanchorlayout.h>

#include <alf/alfimagebrush.h>

// forward declarations

class CAlfTextVisual;

class CAlfGridLayout;

class CAlfImageVisual;

class CAlfShadowBorderBrush;

class CAlfDeckLayout;

class CAlfAnchorLayout;

class CFSEmailUiFolderListControl;

class CFSEmailUiFolderListModel;

class CAlfBorderBrush;

class CFSMailMessage;

class CScrollerTimer;

class CMessageChangerTimer;

class CFreestyleEmailUiTextureManager;

class CFreestyleEmailUiAppUi;

class CFsTreeVisualizerBase;

class CFsTreeList;

class MFsTreeItemVisualizer;

class CFsTreePlainOneLineItemData;

class CFsTreePlainOneLineNodeData;

class CFsTreePlainOneLineItemVisualizer;

class CFsTreePlainOneLineNodeVisualizer;

class MFsControlButtonInterface;

class TFSMailMsgId;

class CFSMailClient;

class CFSMailBox;

class CFSMailFolder;

class CAlfFrameBrush;

class CFSEmailUiFolderListVisualiser : public CFsEmailUiViewBase,

                                       public MFsTreeListObserver

	{

public: // Data types

    enum TExpandCollapseType

        {

        EFolderListExpand,

        EFolderListCollapse,

        EFolderListAutomatic

        };

public: // Construction and destruction

    /**

     * Destructor

     */

	~CFSEmailUiFolderListVisualiser();

    /**

     * Two phase constructors

     *

     * @param aEnv Alfred environmet

     * @param aControlGroup Alfred control group

     * @param aAppUi Application main UI class

     * @return Pointer to newly created object

     */

	static CFSEmailUiFolderListVisualiser* NewL( CAlfEnv& aEnv,

                                                 CAlfControlGroup& aControlGroup,

                                                 CFreestyleEmailUiAppUi& aAppUi );

	static CFSEmailUiFolderListVisualiser* NewLC( CAlfEnv& aEnv,

                                                  CAlfControlGroup& aControlGroup,

                                                  CFreestyleEmailUiAppUi& aAppUi );

public: // From base class CAknView

	void DynInitMenuPaneL(TInt aResourceId, CEikMenuPane* aMenuPane);

	void HandleCommandL( TInt aCommand );

    TUid Id() const;

    void ChildDoDeactivate();

    void DoTransitionEffect( TBool aDirectionOut );

    void GetParentLayoutsL( RPointerArray<CAlfVisual>& aLayoutArray ) const;

public: // Own public functions

    virtual TBool HandleWsEventL( const TWsEvent& aEvent );

    // Handle foreground event (called by FreestyleEmailUiMailListVisualiser)

    void HandleForegroundEventL();

    /**

	 * Dynamic switch handling and background updating

	 */

	void HandleDynamicVariantSwitchL( CFsEmailUiViewBase::TDynamicSwitchType aType );

    /**

     * Event handling forwarded from control

     *

     * @param aEvent Event forwarded from control

     * @return ETrue if event was consumed, otherwise EFalse

     */

	TBool OfferEventL( const TAlfEvent& aEvent );

    /**

     * Handling pointer events.

     *

     * @param aEvent Event forwarded from control

     * @return ETrue if event was consumed, otherwise EFalse

     */

	TBool HandlePointerEventL(const TAlfEvent& aEvent);

	/**

	 * Expands or collpases the currently highlighted folder

	 */

	void ExpandOrCollapseL( const TExpandCollapseType& aType );

    /**

	 * Tells wheter the folder list is shown in full screen or in popup

	 *

     * @return ETrue if list is shown in fullscreen, otherwise EFalse

	 */

	TBool IsFullScreen() const;

    /**

	 * Show folder list in control bar popup

	 *

     * @param aFolderId Folder id of the currently visible folder in mail list

     * @param aCallback Call back to inform the result of the folder query

     * @param aButton Control bar button from where the popup is opened

   	 */

    void ShowInPopupL( const TFSMailMsgId aFolderId,

                       MFSEmailUiFolderListCallback* aCallback,

    				   MFsControlButtonInterface* aButton = NULL );

    /**

	 * Quick and dirty solution to show the sort list with the same list.

	 * Could be changed to some more elegant implementation (e.g. folder list

	 * and sort list derive from some generic control base class that

	 * implements the common operations), if time permits.

	 *

	 * @param aCurrentSortCriteria Current sort criteria in mail list

     * @param aFolderType Folder type of the currently visible folder in mail list

     * @param aCallback Call back to inform the result of the sort order query

     * @param aButton Control bar button from where the popup is opened

	 */

    void ShowSortListPopupL( const TFSMailSortCriteria aCurrentSortCriteria,

                             const TFSFolderType aFolderType,

    						 MFSEmailUiSortListCallback* aCallback,

    						 MFsControlButtonInterface* aButton  = NULL );

    /**

     * Does a horizontal scroll for the list if needed

     *

     * @param aForceRecalculation If ETrue, recalculates the list rect always.

     *                            If EFalse, recalculates the list rect only

     *                            if list level has changed.

     */

    void DoHorizontalScrollL( TBool aForceRecalculation = EFalse );

    /**

     * Function to check whether folder list is displaying popup

     */

    TBool IsPopupShown();

    /**

     * Function to hide popup

     */

    void HidePopupL();

    /**

     * From MFsTreeListObserver

     */

    void TreeListEventL( const TFsTreeListEvent aEvent,

                         const TFsTreeItemId aId,

                         const TPoint& aPoint );

// <cmail> Receiving online/offline events

    void HandleMailBoxEventL( TFSMailEvent aEvent, TFSMailMsgId aMailbox,

        TAny* aParam1, TAny* aParam2, TAny* aParam3 );

// </cmail>

    /**

     * From CFsEmailUiViewBase

     * This method is called from the appui when the focus state is changed.

     *

     * @param aVisible Indicates if focus should become visible or removed

     */

    void FocusVisibilityChange( TBool aVisible );

private: // from

    /**

     * @see CFsEmailUiViewBase::ChildDoActivateL

     */

    void ChildDoActivateL( const TVwsViewId& aPrevViewId,

            TUid aCustomMessageId,

            const TDesC8& aCustomMessage );

    /**

     *  @see CFsEmailUiViewBase::OfferToolbarEventL

     */

    void OfferToolbarEventL( TInt aCommand );

    /**

     * @see CFsEmailUiViewBase::ToolbarResourceId

     */

    TInt ToolbarResourceId() const;

private: // Private functions

    /**

     * Comparison function for TLinearOrder

     *

     * @param aFirst First folder to compare

     * @param aSecond Second folder to compare

     * @return Zero if parameters are equal,

     *         negative if first parameter is less than second,

     *         positive if first parameter is greater than second

     */

    static TInt CompareFolders( const CFSMailFolder& aFirst, const CFSMailFolder& aSecond );

	// Construction

	CFSEmailUiFolderListVisualiser( CAlfEnv& aEnv, CFreestyleEmailUiAppUi &aAppUi, CAlfControlGroup& aControlGroup );

	void ConstructL();

	void LoadIconsL();

	// Internal functions used when showing and hiding the list

	//void DoShowInPopupL();

	void DoShowInPopupL( MFsControlButtonInterface* aButton,

	        MFSEmailUiFolderListCallback* aFolderCallback,

	        MFSEmailUiSortListCallback* aSortCallback );

	void PrepareFolderListL();

    void PopulateFolderListL();

    void PopulateFolderListDeferred();

    static TInt DoPopulateFolderList( TAny* aSelfPtr );

	// Recreate list content

	void UpdateFolderListL();

	void UpdateSortListL();

	// View layout handling and item position calculation

	void UpdateListSizeAttributes();

	void ResizeListIcons();

	void ResizeListItemsL();

	void AdaptScreenRectToListContent();

	void AdjustWidthByContent( TRect& aRect ) const;

	void SetAnchors();

	void SetItemVisualizerPropertiesL( MFsTreeItemVisualizer* aItemVisualizer );

	// Popup list position calcualtion

	TRect LeftListRectInThisResolution();

	TRect RightListRectInThisResolution();

	TRect FolderListRectInThisResolution();

	TRect SortListRectInThisResolution();

	// Handle the selection or cancelation of the list

	void HandleSelectionL( TFSEmailUiCtrlBarResponse aSelection );

	TBool HandleCallbackL();

	// Set header text

	void SetHeaderTextByResourceIdL( TInt aResourceId );

	// Append folder list data

	void AppendActiveMailboxFoldersL();

	void AppendMoreFoldersL();

	void AppendMailboxesL();

	void AppendSeparatorLineL();

	// Append sort list data

	void AppendSortListItemsL();

	// Helper functions used to append different kind of items to list

	void AppendSubfoldersL( TFSMailMsgId aFolder,

	                        TFsTreeItemId aParentNode,

	                        TBool aRefreshLastItem );

	TFsTreeItemId AppendNodeFolderL( CFSMailFolder* aFolder, TFsTreeItemId aParentNode );

	TFsTreeItemId AppendLeafFolderL( CFSMailFolder* aFolder, TFsTreeItemId aParentNode, TBool aAllowRefresh );

	TFsTreeItemId AppendNodeToListFromResourceL( TInt aResourceId,

												 TFsTreeItemId aParentNode,

												 CAlfTexture* aIcon,

												 TUint aUnreadCnt = 0);

	TFsTreeItemId AppendNodeToListL( TDesC* aItemData,

									 TFsTreeItemId aParentNode,

									 CAlfTexture* aIcon,

									 TUint aUnreadCnt);

	TFsTreeItemId AppendItemToListFromResourceL( TInt aResourceId,

												 TFsTreeItemId aParentNode,

												 CAlfTexture* aIcon,

                                                 TBool aAllowRefresh,

                                                 TUint aUnreadCnt = 0);

	TFsTreeItemId AppendItemToListL( TDesC* aItemData,

									 TFsTreeItemId aParentNode,

									 CAlfTexture* aIcon,

                                     TBool aAllowRefresh,

                                     TUint aUnreadCnt = 0);

    TDesC* CFSEmailUiFolderListVisualiser::GetItemDisplayNameLC( TDesC& aItemData, TUint aUnreadCnt );

	void CreatePlainItemLC2( const TDesC* aItemDataBuff,

                             CFsTreePlainOneLineItemData* &aItemData,

                             CFsTreePlainOneLineItemVisualizer* &aItemVisualizer,

                             CAlfTexture* aIcon );

	void CreatePlainNodeLC2( TDesC* aItemDataBuff,

                             CFsTreePlainOneLineNodeData* &aItemData,

                             CFsTreePlainOneLineNodeVisualizer* &aNodeVisualizer,

                             CAlfTexture* aIcon );

	TBool GetStandardFolderResouceIdAndIconL( const TInt aFolderType, TInt &aResourceId, CAlfTexture* &aIcon ) const;

	TBool ShowThisTypeOfFolderL( CFSMailFolder* folder ) const;

	// Hepler function for folder comparison, return internal folder priority

	// used when sorting the list

    static TInt GetFolderPriorityByType( const CFSMailFolder& aFolder );

	// Set and clear soft keys when popup list shown

	void SetPopupSoftkeysL();

	void ClearPopupSoftkeys();

	// Set initial list focus by current/previous activity

    void SetFocusToCurrentSortItemL();

    void SetFocusToCurrentFolderL();

	void SetFocusToLatestMovedFolderL();

	// Move list focus to first or to last item

	void GoToTopL();

	void GoToBottomL();

    // Set toolbar buttons' dimmed/undimmed statuses.

    void UpdateToolbarButtons();

	// Check wheter all list nodes are expanded or collapsed

	TBool AllNodesCollapsed() const;

	TBool AllNodesExpanded( TFsTreeItemId aParentNodeId = KFsTreeRootID ) const;

	// Recursive function to get item's root level parent

	TFsTreeItemId GetRootParent( const TFsTreeItemId aItemId ) const;

    void DoFirstStartL();

    void SetHeaderTextAttributesL();

    void ConnectToMailboxL();

    void DisconnectFromMailboxL();

    TBool CbaButtonPressed( TPoint aPosition );

    void GetCbaRects( TRect& aLeftCbaRect, TRect&  aRightCbaRect );

    TBool IsAreaSideRightPaneActive();

private:

    // Array of list item infos

    RPointerArray< CFsTreePlainOneLineItemData > iListItemDatas;

private: // Typedefs and member variables

	// Array type for the list icons

	typedef RPointerArray<CAlfTexture> TFsEmailFolderListIconArray;

	// Array type for the sort list icons

	typedef RPointerArray<CAlfTexture> TFsEmailSortListIconArray;

	// ALF environment

    CAlfEnv& iEnv;

	// View layouts

    CAlfDeckLayout* iFaderLayout;

    CAlfAnchorLayout* iParentLayout;

    CAlfLayout* iListLayout;

	CAlfLayout* iHeaderLayout;

	// ALF visuals etc. for list background and header

	CAlfImageVisual* iListBgImageVisual;

	CAlfImageVisual* iHeaderImageVisual;

    CAlfTextVisual* iHeaderTextVisual;

    CAlfFrameBrush* iBackgroundBrush;

    CAlfShadowBorderBrush* iShadowBrush;

	// ALF visual for background

	CAlfVisual* iFaderVisual;

	// Pointers to control and model

    CFSEmailUiFolderListControl* iControl;	// not owned (owned by ALF env)

    CFSEmailUiFolderListModel* iModel;		// owned

	// Callback pointers

	MFSEmailUiFolderListCallback* iCallback;

	MFSEmailUiSortListCallback* iSortListCallback;

	// Type of the currently visible folder in mail list

	TFSFolderType iCurrentFolderType;

	// Custom message ID passed in view activation

	TUid iCustomMessageId;

	// List/view size attributes

   	TRect iScreenRect;

	TRect iCtrlButtonRect;

    TRect iPreviousListRect;

	TInt iListItemHeight;

	TInt iListHeaderHeight;

    TInt iListSeparatorHeight;

	TSize iListIconSize;

	TSize iPreviousListIconSize;

	TPoint iPadding;

	// ETrue if list shown in fullscreen

	TBool iFullScreen;

	// List id of the "More folders" item in folder list

	TFsTreeItemId iMoreFoldersItemId;

    // Pointer to the tree list component visualizer.

    CFsTreeVisualizerBase* iTreeVisualizer;

    // Pointer to the tree list component, owned

    CFsTreeList* iTreeList;

	// Mailbox that is currently active in mail list

 	CFSMailBox* iActiveMailbox;

	// Folder list icons, items not owned (are owned by texture manager)

	TFsEmailFolderListIconArray iIconArray;

	// Sort list icons, items not owned (are owned by texture manager)

	TFsEmailSortListIconArray iSortIconArray;

	// Previously selected items

	TFSMailMsgId iLatestSelectedMoveFolderId;

    TFSMailMsgId iCurrentFolderId;

	TFSMailSortCriteria iCurrentSortCriteria;

	// Pointers to list items (and nodes)

	RPointerArray<MFsTreeItemVisualizer> iListItemVisulizers;

    // Previous level in list, used in horizontal scrolling

	TInt iPreviousListLevel;

	TBool iFirstStartCompleted;

	TBool iPopupListShown;

	//For header text caption

  	TBool iTitleCaptionVisible;

  	// Flag to see if view opened with move/copy command

  	TBool iMoveOrCopyInitiated;

  	// Flag to see if connection was started

  	TBool iWaitingToGoOnline;

    // Do we need to connect the mailbox before showing the folder list

    TBool iNoConnectNeeded;

	// Should we use expansion animation for the next transition effect

	TBool iAnimateNextActivation;

	CAsyncCallBack* iAsyncCallback;

	TBool iConsumeUntilNextUpEvent;

	};

#endif //__FREESTYLEEMAILUI_FOLDERLISTVISUALISER_H__