javauis/eswt_akn/org.eclipse.ercp.swt.s60/native/inc/swtuiutils.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 14 May 2010 15:47:24 +0300
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/*******************************************************************************
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 * Copyright (c) 2005, 2010 Nokia Corporation and/or its subsidiary(-ies).
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 * All rights reserved. This program and the accompanying materials
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 * are made available under the terms of the Eclipse Public License v1.0
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 * which accompanies this distribution, and is available at
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 * http://www.eclipse.org/legal/epl-v10.html
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 *
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 * Contributors:
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 *     Nokia Corporation - S60 implementation
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 *******************************************************************************/
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#ifndef SWTUIUTILS_H
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#define SWTUIUTILS_H
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#include <AknPopupFader.h>
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#include "eswtwidgetscore.h"
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class CAknNavigationDecorator;
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/**
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 * CSwtUiUtils
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 * @lib eswt.dll
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 */
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NONSHARABLE_CLASS(CSwtUiUtils)
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        : public CBase
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        , public MSwtUiUtils
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        , public MEikStatusPaneObserver
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        , public MAknFadedComponent
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{
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public:
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    /**
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     * Two phase constructor
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     */
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    static CSwtUiUtils* NewL(MSwtDisplay& aDisplay);
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    /**
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     * Destructor
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     */
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    ~CSwtUiUtils();
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    /**
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     * Register shell.
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     * @param aShell
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     */
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    void RegisterShellL(MSwtShell& aShell);
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    /**
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     * Unregister shell.
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     * @param aShell
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     */
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    void UnregisterShell(MSwtShell& aShell);
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    /**
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     * Try setting a shell active. See CanBeActive().
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     * @param aShell The Shell to be made active.
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     * @param aSetFocus Instructs the newly activated Shell to try and set
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     *        the focus on one of its children.
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     * @return whether the Shell was actually made active.
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     */
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    TBool SetActiveShell(MSwtShell& aShell, TBool aSetFocus);
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    /**
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     * Test if a shell can become active taking into account the current
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     * active shell. For instance only modal Shells can become active
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     * when there is already an active Shell.
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     * @param aShell
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     * @param aStrictCheck controls if modality is a factor
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     */
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    TBool CanBeActive(MSwtShell& aShell, TBool aStrictCheck = ETrue) const;
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    /**
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     * Test if a shell can be displayed as top most (behind active child).
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     * @param aShell
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     */
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    TBool CanBeTopMost(MSwtShell& aShell) const;
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    /**
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     * Inform that the shell's activity may have changed.
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     * @param aShell
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     */
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    void ShellActivabilityChanged(MSwtShell& aShell);
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    /**
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     * Sets next focused control. This function is called when app lost focus, which stores
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     * a pointer of control that can be focused when app gains focus again.
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     * Calling with NULL of course unsets.
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     * @param aNextFocusedControl The pointer of control that can be focused when app gains focus again.
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     */
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    void SetNextFocusedControl(MSwtControl* aNextFocusedControl);
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    /**
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     * Returns the control that will gain focus when app gains focus again.
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     */
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    MSwtControl* NextFocusedControl();
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    /**
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     * Changes the application focus and sets the given shell to be active.
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     * @param aShell The shell to be activated after gaining to focus.
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     * @param aForeground brings application to foreground if True
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     */
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    void ChangeAppFocus(MSwtShell& aShell, TBool aForeground);
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    /**
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     * Browser engine dll loading must be done dynamically due to WSD.
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     * This function returns the interface creation function of the dll.
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     * The browser dll is loaded the first time this function is called.
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     */
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    TLibraryFunction BrowserDllEntryL();
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    /**
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     * Returns number of active browsers in applicaition.
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     */
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    TInt ActiveBrowserCount() const;
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    /**
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     * Notifies UiUtils that new instance of Browser was created
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     * and therefore previous garbage browser (and its shell
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     * if neccessary) can be removed.
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     */
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    void NotifyNewBrowserCreated();
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    /**
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     * Browser instance must be deleted only just before the application exits.
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     * If attempted earlier, the browser engine dll will crash due to WSD.
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     * This function sets the browser instance to be kept in limbo till app exit.
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     */
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    void GarbageCollect(MSwtBrowser& aBrowser);
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    /**
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     * Aside with browser we must collect also the window that contains it.
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     */
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    void GarbageCollect(MSwtShell& aShell);
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private:
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    /**
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     * First phase constructor.
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     */
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    CSwtUiUtils(MSwtDisplay& aDisplay);
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    /**
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     * Second phase constructor.
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     */
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    void ConstructL();
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    /**
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     * Set active shell.
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     * @param aShell
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     * @param aSetFocus
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     */
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    void DoSetActiveShell(MSwtShell& aShell, TBool aSetFocus);
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    /**
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     * Search for a shell capable of being active and activate it. The Shell
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     * list is searched in reverse order because this should match the
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     * Shells Z-order.
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     * @return TBool If no Shell found, return EFalse.
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     */
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    TBool FindAndActivateShell();
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    /**
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     * Test if a shell is application modal.
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     * @param aShell
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     * @return TBool
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     */
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    static TBool IsApplicationModal(MSwtShell& aShell);
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    /**
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     * Free memory from eSwt Browser and its children.
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     * @param aComposite The pointer to composite
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     * @return void
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     */
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    void FreeBrowserRamL(MSwtComposite* aComposite, TInt aEventType);
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    /**
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     * Move a Shell at the end of the Shell queue.
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     */
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    void MoveToEndOfQueue(MSwtShell& aShell);
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    /**
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     * Highest inline control default font. See InlineReferenceFontHeight.
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     */
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    const CFont& InlineReferenceFont() const;
23
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21
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    void HideIndicator(TInt aId);
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    void HideIndicators();
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// From MSwtUiUtils
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public:
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    TRgb GetSystemColor(TSwtColorId aId) const;
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    TFontSpec SystemFontSpec() const;
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    TInt RunMessageBoxDlgLD(MSwtDisplay& aDisplay, const TDesC& aTitle,
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                            const TDesC& aMessage, TInt aStyle) const;
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    MSwtShell* GetActiveShell() const
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    {
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        return iActiveShell;
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    };
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    MSwtShell* GetParentTopShellOfActiveShell() const;
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    MSwtShell* TopMostTopShell() const;
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    TSwtPeer GetActiveShellPeer() const;
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    inline const RPointerArray<MSwtShell>& Shells() const;
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    CSwtPeerArray* GetShellPeersL() const;
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    TSwtPeer GetFocusControl() const;
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    MSwtShell& GetControlTopShell(const MSwtControl& aControl) const;
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    void DrawFocusRect(MSwtGc& aGc, const TRect& aRect) const;
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    CEikButtonGroupContainer& Cba() const;
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    void UpdateStatusPaneL();
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    TBool IsAppFocused() const;
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    const HBufC* GetCommandOkTitleL() const;
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    const HBufC* GetCommandCancelTitleL() const;
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    TInt  GetPointerEventStateMask(TUint aPointerEventModifiers) const;
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    MSwtShell* FadingShell() const
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    {
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        return iFadingShell;
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    };
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    TMargins8 InlineReferencePadding() const;
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    TInt InlineReferenceFontHeight() const;
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    void SetAppNameL(const TDesC* aAppName);
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    TSize GetBestImageSize(TInt aImageType);
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    void HandleResourceChangedL(TInt aType);
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    TInt ScrollBarBreadth(const CEikScrollBar* aBar);
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    TBool NaviKeyInput() const;
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    void SetNaviKeyInput(TBool aStatus);
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    void SetCbaVisible(TBool aVisible);
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    MSwtControl* GetPointerGrabbingControl();
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    TRect TaskTipRect() const;
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    void SetPointerCaptureControl(MSwtControl* aControl);
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    MSwtControl* PointerCaptureControl();
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protected:
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    void HandleFreeRamEventL(TInt aEventType);
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21
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// From MSwtAppFocusObserver
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public:
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    void HandleAppFocusChangeL(TBool aFocused);
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// From MEikStatusPaneObserver
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public:
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    void HandleStatusPaneSizeChange();
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private:
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    void SetShellFade(MSwtShell* aShell, TBool aStatus);
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    TBool CanBeFaded(MSwtShell* aShell) const;
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// From MAknFadedComponent
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public:
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    TInt CountFadedComponents();
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    CCoeControl* FadedComponent(TInt aIndex);
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// Data
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private:
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    /**
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     * Display reference needed for getting CEikEnv for now.
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     */
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    MSwtDisplay& iDisplay;
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21
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    /**
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     * All shells.
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     * Not own.
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     */
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    RPointerArray<MSwtShell> iShells;
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    /**
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     * The currently active shell. Can be NULL.
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     * Not own.
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     */
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    MSwtShell* iActiveShell;
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    /**
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     * The next shell to be made active. Can be NULL.
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     * See HandleFocusLost(), HandleFocusLost()
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     * Not own.
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     */
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    MSwtShell* iNextActiveShell;
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    /**
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     * The next control to focus.
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     * Not own.
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     */
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    MSwtControl* iNextFocusedControl;
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    /**
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     * Focus lost flag.
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     * See HandleFocusLost(), HandleFocusLost().
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     */
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    TBool iFocusLost;
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    /**
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     * CBA, cannot be NULL
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     * Own.
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     */
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    CEikButtonGroupContainer* iCba;
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    /**
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     * The NaviDecorator which contain the text set by SetNaviPaneText()
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     * Not own.
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     */
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    CAknNavigationDecorator* iNaviDecorator;
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    /**
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     * The Status Pane
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     * Not own.
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     */
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    CEikStatusPane* iStatusPane;
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    /**
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     * Pointer to the control that has been
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     * set pointer capturing with setCapture.
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     * Not Own
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     */
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    MSwtControl* iPointerCaptureControl;
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    /**
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     * Browser engine dll.
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     */
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    RLibrary iBrowserEngineLib;
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    /**
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     * Entry point of browser engine dll.
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     */
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    TLibraryFunction iBrowserDllEntry;
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    /**
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     * Number of currently existing browser instances.
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     */
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    TInt iCurrentBrowserCount;
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   330
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   331
    /**
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   332
     * Browser instance must be deleted only just before the application exits.
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   333
     * If attempted earlier, the browser engine dll will crash due to WSD.
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   334
     * This is the browser instance to be kept in limbo till app exit.
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   335
     */
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   336
    MSwtBrowser* iBrowserGarbage;
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   337
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   338
    /**
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   339
     * Shell instance to be also garbage collected together with browser.
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   340
     * The browser needs to have the parent window alive till destroyed.
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   341
     */
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   342
    MSwtShell* iBrowserShellGarbage;
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   343
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   344
    /**
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   345
     * Flag signalling whether Browser's parent shell was requested to
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   346
     * collect.
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   347
     */
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   348
    TBool iShellGarbageCollectionRequested;
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   349
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   350
    /**
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   351
     * The string of status text separator.
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   352
     */
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   353
    HBufC* iSeparatorString;
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   354
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   355
    /**
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   356
     * Keep track of top most shells.
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   357
     */
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   358
    MSwtShell* iLastTopMostShell;
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   359
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   360
    /**
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   361
     * Used to fade the whole system behind modal child shells.
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   362
     */
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   363
    TAknPopupFader iFader;
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   364
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   365
    /**
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   366
     * The Shell which fades behind.
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   367
     */
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   368
    MSwtShell* iFadingShell;
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   369
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   370
    /**
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   371
     * Used by display appName to set the title for status pane.
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   372
     * Own.
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   373
     */
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   374
    TDesC* iAppName;
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   375
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   376
    /**
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   377
     * Cached scrollbar breadth. Valid till next resolution change.
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   378
     */
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   379
    TInt iScrollBarBreadth;
23
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 21
diff changeset
   380
21
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   381
    /**
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   382
     * Inline reference stuff
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   383
     */
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   384
    mutable const CFont* iInlineFont;
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   385
    mutable TInt iInlineFontHeight;
23
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 21
diff changeset
   386
    mutable TMargins8 iInlinePadding;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 21
diff changeset
   387
21
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   388
    /**
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   389
     * Key input flag.
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   390
     */
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   391
    TBool iNaviKeyInput;
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   392
};
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   393
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   394
/**
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   395
 * Return the existing shells
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   396
 */
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   397
inline const RPointerArray<MSwtShell>& CSwtUiUtils::Shells() const
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   398
{
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   399
    return iShells;
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   400
}
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   401
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   402
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   403
#endif // SWTUIUTILS_H