emailuis/emailui/inc/FreestyleEmailUiHtmlViewerContainer.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:39:21 +0200
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/*
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* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). 
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  CFsEmailUiHtmlViewerContainer class definition
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*
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*/
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#ifndef __FREESTYLEEMAILUI_HTML_VIEWER_CONTAINER_H__
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#define __FREESTYLEEMAILUI_HTML_VIEWER_CONTAINER_H__
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#include <coecntrl.h>
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#include <BrCtlSpecialLoadObserver.h>
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#include <BrCtlLinkResolver.h>
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#include "FreestyleEmailDownloadInformationMediator.h"
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class CFSMailMessage;
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class CFreestyleEmailUiAppUi;
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class CFreestyleMessageHeaderURLEventHandler;
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/**
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 * Html viewer container.
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 */
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class CFsEmailUiHtmlViewerContainer : public CCoeControl,
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                                      public MBrCtlSpecialLoadObserver,
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                                      public MBrCtlLinkResolver,
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                                      public MBrCtlSoftkeysObserver,
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                                      public MFSEmailDownloadInformationObserver
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    {
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public:
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    /** Two-phased constructor. */
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    static CFsEmailUiHtmlViewerContainer* NewL( CFreestyleEmailUiAppUi& aAppUi,
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        CFsEmailUiHtmlViewerView& aView );
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    /** Destrcutor. */
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    ~CFsEmailUiHtmlViewerContainer();
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    CBrCtlInterface* BrowserControlIf();
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    void LoadContentFromFileL( const TDesC& aFileName );
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    void LoadContentFromFileL( RFile& aFile );
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    void LoadContentFromUrlL( const TDesC& aUrl );
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    void LoadContentFromMailMessageL( CFSMailMessage* aMailMessage );
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    void ResetContent();
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    void CancelFetch();
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    void ClearCacheAndLoadEmptyContent();
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    // <cmail>
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    void PrepareForExit();
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    // </cmail>
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// from base class CCoeControl
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    CCoeControl* ComponentControl( TInt aIndex ) const;
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    TInt CountComponentControls() const;
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    void Draw( const TRect& aRect ) const;
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    void SizeChanged();
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    TKeyResponse OfferKeyEventL( const TKeyEvent& aKeyEvent, TEventCode aType );
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// from base class MBrCtlSpecialLoadObserver
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    void NetworkConnectionNeededL( TInt* aConnectionPtr, TInt* aSockSvrHandle,
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        TBool* aNewConn, TApBearerType* aBearerType );
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    TBool HandleRequestL( RArray<TUint>* aTypeArray, CDesCArrayFlat* aDesArray );
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    TBool HandleDownloadL( RArray<TUint>* aTypeArray, CDesCArrayFlat* aDesArray );
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// from base class MFSEmailDownloadInformationObserver
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    void RequestResponseL( const TFSProgress& aEvent, const TPartData& aPart );
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// from base class MBrCtlLinkResolver
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    TBool ResolveEmbeddedLinkL( const TDesC& aEmbeddedUrl,
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        const TDesC& aCurrentUrl, TBrCtlLoadContentType aLoadContentType, 
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        MBrCtlLinkContent& aEmbeddedLinkContent ); 
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    TBool ResolveLinkL( const TDesC& aUrl, const TDesC& aCurrentUrl,
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        MBrCtlLinkContent& aBrCtlLinkContent );
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    void CancelAll();
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// from base class MBrCtlSoftkeysObserver
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    void UpdateSoftkeyL( TBrCtlKeySoftkey aKeySoftkey, const TDesC& aLabel,
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        TUint32 aCommandId, TBrCtlSoftkeyChangeReason aBrCtlSoftkeyChangeReason );
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    void StopObserving();
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private:
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    // Second phase constructor.
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    void ConstructL();
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    // C++ constructor.
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    CFsEmailUiHtmlViewerContainer( CFreestyleEmailUiAppUi& aAppUi,
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        CFsEmailUiHtmlViewerView& aView );
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    // Set HTML folder path name
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    void SetHtmlFolderPathL();
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    // Sets temporary HTML folder path name
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    void SetTempHtmlFolderPath();
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    // Remove all previously created files from temporary HTML folder
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    void EmptyTempHtmlFolderL();
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    // Copies given file to temporary HTML folder and returns an open file
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    // handle to the created copy.
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// <cmail>
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    void CopyFileToHtmlFileL( RFile& aFile, const TDesC& aFileName, CFSMailMessagePart& aHtmlBodyPart );
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    // Reads given file content to buffer and return pointer to it
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    HBufC8* ReadContentFromFileLC( RFile& aFile );
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    // Writes buffer to given file
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    void WriteContentToFileL( const TDesC8& aContent, const TDesC& aFileName, CFSMailMessagePart& aHtmlBodyPart );
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// </cmail>
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    // Finds the attachment from the list that matches the given content ID 
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    CFSMailMessagePart* MatchingAttacmentL( const TDesC& aContentId,
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        const RPointerArray<CFSMailMessagePart>& aAttachments ) const;
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   122
    // Resolves embedded link referring to file in temporary HTML folder
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    TBool ResolveLinkL( const TDesC& aLink, TBool aContentId,
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        MBrCtlLinkContent& aEmbeddedLinkContent );
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    // Downloads and return attachment content via MBrCtlLinkContent interface
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    void DownloadAttachmentL( CFSMailMessagePart& aAttachment,
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        MBrCtlLinkContent& aEmbeddedLinkContent );
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    void SetHTMLResourceFlagFullName();
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    void EnableHTMLResourceFlagL();
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    TBool HTMLResourceFlagEnabled();
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    void CopyHTMLResourceL();
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    // Ensure all resource files (eg. images) required by HTML display to be ready in C:\[private]\HtmlFile
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    void EnsureHTMLResourceL(); 
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    void ConvertPlainTextToHTML(CFSMailMessagePart* aTextBodyPart, RFile htmlFile);
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    void CopyFileToHtmlFileL( const TDesC8& aBuffer,
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            const TDesC& aFileName, CFSMailMessagePart& aHtmlBodyPart );
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    void ConvertToHTML( const TDesC8& aContent,
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            const TDesC& aFileName, CFSMailMessagePart& aHtmlBodyPart );
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    HBufC8* GetCharacterSetL( CFSMailMessagePart& aHtmlBodyPart );
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   142
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private: // data
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   144
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    // Reference to AppUi.
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    CFreestyleEmailUiAppUi& iAppUi;
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    // Reference to Html viewer view.
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    CFsEmailUiHtmlViewerView& iView;
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    // Browser control interface. Own.
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    CBrCtlInterface* iBrCtlInterface;
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    // Message. Not own.
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    CFSMailMessage*  iMessage;
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    RFile            iFile;
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    RFs              iFs;
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    RSocketServ      iSocketServer;
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    RConnection      iConnection;
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    TBool            iFirstTime;
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    // HTML folder path.
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    TPath iHtmlFolderPath;
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    // Temporary HTML folder path.
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    TPath iTempHtmlFolderPath;
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    // HTML resource flag file path
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    TPath iHtmlResourceFlagPath;
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    // Interfaces waiting for embedded link content.
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    RPointerArray<MBrCtlLinkContent> iLinkContents;
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    // Message parts being downloaded as embedded link content.
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    RArray<TPartData> iMessageParts;
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    CFreestyleMessageHeaderURLEventHandler* iEventHandler;
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    TBool iObservingDownload;
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    };
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#endif // __FREESTYLEEMAILUI_HTML_VIEWER_CONTAINER_H__