// Copyright (c) 1999-2009 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:

//

#ifndef __THELPVIEW_H__

#define __THELPVIEW_H__

// System includes

#include <coecntrl.h>

#include <coecobs.h>

#include <eikappui.h>

#include <eikapp.h>

#include <eikdoc.h>

#include "hlpmodel.h"

#include <techview/eikon.hrh>

// Constants

const TUid KUidHelpViewApp		= { 0x100068D3 };

const TInt KNumberOfZoomStates	= 3;

// Classes referenced

class CHlpModel;

class CEikRichTextEditor;

class CEikChoiceList;

class CHlpAppUi;

// 

class CHlpListBox;

class CHlpSearchPrompt;

//

// ----> MZoomableControl (header)

//

class MZoomableControl

	{

//

public: // ZOOM ENUM

//

	enum TZoomEvent

		{

		EEventZoomIn = EEikCmdZoomIn,

		EEventZoomOut = EEikCmdZoomOut,

		EEventZoomDefault

		};

//

public:

//

	virtual void HandleZoomEventL(TZoomEvent aEvent) = 0;

	};

//

// ----> CHlpView (header)

//

class CHlpView : public CCoeControl, public MCoeControlObserver, public MHlpModelObserver, public MZoomableControl

    {

//

public: // ZOOM ENUMERATION

//

	enum TZoomStates

		{

		EZoomStateOne		= 750,

		EZoomStateTwo		= TZoomFactor::EZoomOneToOne,

		EZoomStateThree		= 1250

		};

//

public: // CONSTRUCT / DESTRUCT

//

	CHlpView(CHlpAppUi& aAppUi, CHlpModel& aModel);

	~CHlpView();

	void ConstructL();

//

public:	// NEW

//

	void PopulateCategoryListL();

	void PopulateTopicListL(const TDesC& aTopic);

	void UpdateEdwinL(const CHlpItem& aItem);

//

public: // FROM MZoomableControl

//

	void HandleZoomEventL(TZoomEvent aEvent);

//

public:	// FROM CCoeControl

//

	void SizeChanged();

	TInt CountComponentControls() const;

	CCoeControl* ComponentControl(TInt aIndex) const;

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

//

private: // FROM MCoeControlObserver

//

	void HandleControlEventL(CCoeControl* aControl, TCoeEvent aEventType);

//

private: // FROM MHlpModelObserver

//

	void HandleModelEventL(TInt aEvent);

//

private: // FROM MPictureFactory

//

	void NewPictureL(TPictureHeader& aHdr,const CStreamStore& aDeferredPictureStore) const;

//

private: // FROM MRichTextStoreResolver

//

	const CStreamStore& StreamStoreL(TInt aPos) const;

//

private: // NEW INTERNAL

//

	static TInt ZoomForIndex(TInt aIndex);

//

private: // MEMBER DATA

//

	CCoeControl* iFocusedControl;

	// Referenced

	CHlpAppUi& iAppUi;

	CHlpModel& iHelpModel;

	// Owned

	TInt iLastResponseFromHelpModel;

	TInt iCurrentZoom;

	TZoomFactor iZoom;

	CEikChoiceList* iHelpCategories;

	CEikChoiceList* iHelpTopicsForCategory;

	CEikRichTextEditor* iRichTextEditor;

	CHlpList* iCurrentTopics;

	CHlpTopic* iLastTopic;

    };

//

// ----> CHlpMainView (header)

//

class CHlpMainView : public CCoeControl, public MCoeControlObserver, public MHlpModelObserver

    {

//

public: // CONSTRUCT / DESTRUCT

//

	CHlpMainView(CHlpAppUi& aAppUi, CHlpModel& aModel);

	~CHlpMainView();

	void ConstructL();

//

public: // ACCESS

//

	TBool IsSearchPromptVisible() const;

	TBool IsSearchResultVisible() const;

	void ShowSearchPrompt(TBool aShow);

	void MakeResultsVisible(TBool aVisible);

//

public:	// FROM CCoeControl

//

	void SizeChanged();

	TInt CountComponentControls() const;

	CCoeControl* ComponentControl(TInt aIndex) const;

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

//

public:	// FROM MCoeControlObserver

//

	void HandleControlEventL(CCoeControl* aControl, TCoeEvent aEventType);

//

public:	// FROM MHlpModelObserver

//

	void HandleModelEventL(TInt aEvent);

//

public: // INTERNAL

//

	void DoSearchL();

//

private: // MEMBER DATA

//

	// Referenced

	CHlpAppUi& iAppUi;

	CHlpModel& iModel;

	// Owned

	TInt iLastHelpModelResponse;

	CHlpView* iView;

	CHlpListBox* iSearchResults;

	CHlpSearchPrompt* iSearchPrompt;

	};

//

// ----> CHlpAppUi (header)

//

class CHlpDocument : public CEikDocument

	{

//

public:

//

	CHlpDocument(CEikApplication& aApp);

	~CHlpDocument();

	void NewDocumentL();

	inline CHlpModel& Model() const { return *iModel; }

	inline CHlpAppUi& AppUi() const;

//

private: // FROM CEikDocument

//

	CEikAppUi* CreateAppUiL();

//

private: // MEMBER DATA

//

	CHlpModel* iModel;

	};

//

// ----> CHlpApplication (header)

//

class CHlpApplication : public CEikApplication

	{

//

private: // FROM CEikApplication - pure virutal

//

	CApaDocument* CreateDocumentL();

	// FROM CApaApplication - pure virutal	

	TUid AppDllUid() const;

	};

//

// ----> CHlpAppUi (header)

//

class CHlpAppUi : public CEikAppUi

    {

//

public:

//

	~CHlpAppUi();

    void ConstructL();

	inline CHlpDocument& Document() const	{ return *STATIC_CAST(CHlpDocument*, iDocument); }

	inline CHlpMainView& View() const		{ return *iView; }

	inline void SetZoomHandler(MZoomableControl* aZoomableControl) { iZoomHandler = aZoomableControl; }

//

private: // FROM CEikAppUi

//

	void HandleCommandL(TInt aCommand);

	void DynInitMenuPaneL(TInt aMenuId, CEikMenuPane* aMenuPane);

//

private: // NEW

//

	void HandleZoomL(TInt aZoomEvent);

//

private: // MEMBER DATA

//

	CHlpMainView* iView;

	MZoomableControl* iZoomHandler;

	};

inline CHlpAppUi& CHlpDocument::AppUi() const

	{

	return *STATIC_CAST(CHlpAppUi*, iAppUi); 

	}

#endif