1 /* This file is part of the KDE project 2 * Copyright (C) 2011 Ko GmbH <cbo@kogmbh.com> 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 #ifndef INDEXGENERATORMANAGER_H 20 #define INDEXGENERATORMANAGER_H 21 22 23 #include <QObject> 24 #include <QMetaType> 25 #include <QHash> 26 #include <QTimer> 27 28 class QTextDocument; 29 class KoTextDocumentLayout; 30 class KoTableOfContentsGeneratorInfo; 31 class ToCGenerator; 32 33 class IndexGeneratorManager : public QObject 34 { 35 Q_OBJECT 36 private: 37 explicit IndexGeneratorManager(QTextDocument *document); 38 public: 39 ~IndexGeneratorManager() override; 40 41 static IndexGeneratorManager *instance(QTextDocument *document); 42 43 bool generate(); 44 45 public Q_SLOTS: 46 void requestGeneration(); 47 void startDoneTimer(); 48 49 private Q_SLOTS: 50 void layoutDone(); 51 void timeout(); 52 53 private: 54 enum State { 55 Resting, // We are not doing anything, and don't need to either 56 FirstRunNeeded, // We would like to update the indexes, with dummy pg nums 57 FirstRun, // Updating indexes, so prevent layout and ignore documentChanged() 58 FirstRunLayouting, // KoTextDocumentLayout is layouting so sit still 59 SecondRunNeeded, // Would like to update the indexes, getting pg nums right 60 SecondRun, // Updating indexes, so prevent layout and ignore documentChanged() 61 SecondRunLayouting // KoTextDocumentLayout is layouting so sit still 62 }; 63 QTextDocument *m_document; 64 KoTextDocumentLayout *m_documentLayout; 65 QHash<KoTableOfContentsGeneratorInfo *, ToCGenerator *> m_generators; 66 State m_state; 67 QTimer m_updateTimer; 68 QTimer m_doneTimer; 69 }; 70 71 Q_DECLARE_METATYPE(IndexGeneratorManager *) 72 73 #endif 74