author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 16 Apr 2010 14:53:18 +0300 | |
changeset 25 | 76a2435edfd4 |
child 27 | de1630741fbe |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2009 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: |
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* |
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*/ |
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|
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#ifndef CNTVIEWNAVIGATOR_H_ |
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#define CNTVIEWNAVIGATOR_H_ |
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#include <QObject> |
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#include <QStack> |
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#include "cntviewparameters.h" |
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|
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/*! |
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* Navigator keeps track on view history, the path that user has |
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* gone throug. If back() is called, one step back view id |
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* given, unless exception is set to current view id. In case of |
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* exception, navigator goes back in history until the exception |
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* value is found. Note the difference between "back with exeception" vs. |
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* "launching given view id" (next()). |
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* |
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* Next goes one step forward and stores history. |
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* Navigator is implemented as stack of view ids. |
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* |
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*/ |
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class CntViewNavigator : public QObject |
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{ |
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Q_OBJECT |
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public: |
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CntViewNavigator( QObject* aParent ); |
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~CntViewNavigator(); |
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public: |
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/*! |
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* Next view puts the given id as current view |
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*/ |
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void next( const CntViewParameters::ViewId& aId ); |
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/*! |
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* Back view returns the previous view |
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*/ |
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const CntViewParameters::ViewId& back(); |
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/*! |
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* Add exceptions to next/back mechanism. Function will use the aBack argument |
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* for previous view when aCurrent is the active view. |
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*/ |
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void addException( const CntViewParameters::ViewId& aCurrent, const CntViewParameters::ViewId& aBack ); |
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void removeException( const CntViewParameters::ViewId& aCurrent ); |
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private: |
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QStack<CntViewParameters::ViewId> iViewStack; |
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QMap< CntViewParameters::ViewId, CntViewParameters::ViewId> iExceptions; |
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CntViewParameters::ViewId iTop; |
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}; |
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#endif /* CNTVIEWNAVIGATOR_H_ */ |