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/***************************************************************************
 *   Copyright (C) 2002 by Wilco Greven <greven@kde.org>                   *
 *   Copyright (C) 2003-2004 by Christophe Devriese                        *
 *                         <Christophe.Devriese@student.kuleuven.ac.be>    *
 *   Copyright (C) 2003 by Andy Goossens <andygoossens@telenet.be>         *
 *   Copyright (C) 2003 by Laurent Montel <montel@kde.org>                 *
 *   Copyright (C) 2004 by Dominique Devriese <devriese@kde.org>           *
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 *   Copyright (C) 2004-2007 by Albert Astals Cid <aacid@kde.org>          *
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 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 ***************************************************************************/

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#ifndef _PART_H_
#define _PART_H_
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#include <kparts/browserextension.h>
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#include <kparts/part.h>
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#include <qicon.h>
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#include <qlist.h>
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#include <qpointer.h>
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#include <qprocess.h>
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#include "core/observer.h"
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#include "core/document.h"
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#include "kdocumentviewer.h"
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#include <QtDBus/QtDBus>
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class QAction;
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class QWidget;
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class QSplitter;
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class QToolBox;
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class KUrl;
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class KConfigGroup;
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class KDirWatch;
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class KToggleAction;
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class KToggleFullScreenAction;
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class KSelectAction;
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class KAboutData;
class KPrinter;
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class KTemporaryFile;
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class FindBar;
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class ThumbnailList;
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class PageSizeLabel;
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class PageView;
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class PageViewTopMessage;
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class PresentationWidget;
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class ProgressWidget;
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class SearchWidget;
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class TOC;
class MiniBar;
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namespace Okular
{
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class ExportFormat;
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}
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class BrowserExtension;

/**
 * This is a "Part".  It that does all the real work in a KPart
 * application.
 *
 * @short Main Part
 * @author Wilco Greven <greven@kde.org>
 * @version 0.2
 */
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class Part : public KParts::ReadOnlyPart, public Okular::DocumentObserver, public KDocumentViewer
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{
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    Q_OBJECT
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    Q_CLASSINFO("D-Bus Interface", "org.kde.okular")
    Q_INTERFACES(KDocumentViewer)
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    public:
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        // Default constructor
        Part(QWidget* parentWidget, QObject* parent, const QStringList& args);

        // Destructor
        ~Part();

        // inherited from DocumentObserver
        uint observerId() const { return PART_ID; }
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        void notifySetup( const QVector< Okular::Page * > &pages, bool documentChanged );
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        void notifyViewportChanged( bool smoothMove );
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        void notifyPageChanged( int page, int flags );
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        static KAboutData* createAboutData();

        bool openDocument(const KUrl& url, uint page);
        void startPresentation();
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        QStringList supportedMimeTypes() const;
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        KUrl realUrl() const;

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    public slots:                // dbus
        Q_SCRIPTABLE Q_NOREPLY void goToPage(uint page);
        Q_SCRIPTABLE Q_NOREPLY void openDocument(KUrl doc);
        Q_SCRIPTABLE uint pages();
        Q_SCRIPTABLE uint currentPage();
        Q_SCRIPTABLE KUrl currentDocument();
        Q_SCRIPTABLE void slotPreferences();
        Q_SCRIPTABLE void slotFind();
        Q_SCRIPTABLE void slotPrintPreview();
        Q_SCRIPTABLE void slotPreviousPage();
        Q_SCRIPTABLE void slotNextPage();
        Q_SCRIPTABLE void slotGotoFirst();
        Q_SCRIPTABLE void slotGotoLast();

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    signals:
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        void enablePrintAction(bool enable);

    protected:
        // reimplemented from KParts::ReadOnlyPart
        bool openFile();
        bool openUrl(const KUrl &url);
        bool closeUrl();

    protected slots:
        // connected to actions
        void openUrlFromDocument(const KUrl &url);
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        void openUrlFromBookmarks(const KUrl &url);
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        void slotGoToPage();
        void slotHistoryBack();
        void slotHistoryNext();
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        void slotAddBookmark();
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        void slotPreviousBookmark();
        void slotNextBookmark();
        void slotFindNext();
        void slotSaveFileAs();
        void slotGetNewStuff();
        void slotNewConfig();
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        void slotNewGeneratorConfig();
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        void slotShowMenu(const Okular::Page *page, const QPoint &point);
        void slotShowProperties();
        void slotShowEmbeddedFiles();
        void slotShowLeftPanel();
        void slotShowPresentation();
        void slotHidePresentation();
        void slotExportAs(QAction *);
        bool slotImportPSFile();
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        void slotAboutBackend();
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        void slotReload();
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        void close();
        void cannotQuit();
        void splitterMoved( int pos, int index );
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        void slotShowFindBar();
        void slotHideFindBar();
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        void setMimeTypes(KIO::Job *job);
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        void readMimeType(KIO::Job *job, const QString &mime);
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        void loadCancelled(const QString &reason);
        void setWindowTitleFromDocument();
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        void saveSplitterSize();
        // can be connected to widget elements
        void updateViewActions();
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        void updateBookmarksActions();
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        void enableTOC(bool enable);

    public slots:
        // connected to Shell action (and browserExtension), not local one
        void slotPrint();
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        void restoreDocument(const KConfigGroup &group);
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        void saveDocumentRestoreInfo(KConfigGroup &group);
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        void slotFileDirty( const QString& );
        void slotDoFileDirty();
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        void psTransformEnded(int, QProcess::ExitStatus);
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    private:
        void doPrint( KPrinter& printer );
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        bool handleCompressed( QString &destpath, const QString &path, const QString &compressedMimetype );
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        void rebuildBookmarkMenu( bool unplugActions = true );
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        void updateAboutBackendAction();
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        void unsetDummyMode();

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        KTemporaryFile *m_tempfile;

        // the document
        Okular::Document * m_document;
        QString m_temporaryLocalFile;

        // main widgets
        QSplitter *m_splitter;
        QWidget *m_leftPanel;
        QToolBox *m_toolBox;
        SearchWidget *m_searchWidget;
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        FindBar * m_findBar;
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        PageViewTopMessage * m_topMessage;
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        PageViewTopMessage * m_formsMessage;
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        QPointer<ThumbnailList> m_thumbnailList;
        QPointer<PageView> m_pageView;
        QPointer<TOC> m_toc;
        QPointer<MiniBar> m_miniBar;
        QPointer<PresentationWidget> m_presentationWidget;
        QPointer<ProgressWidget> m_progressWidget;
        QPointer<PageSizeLabel> m_pageSizeLabel;

        // document watcher (and reloader) variables
        KDirWatch *m_watcher;
        QTimer *m_dirtyHandler;
        Okular::DocumentViewport m_viewportDirty;
        bool m_wasPresentationOpen;
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        int m_dirtyToolboxIndex;
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        // Remember the search history
        QStringList m_searchHistory;

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        // mimetype got from the job
        QString m_jobMime;

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        // actions
        QAction *m_gotoPage;
        QAction *m_prevPage;
        QAction *m_nextPage;
        QAction *m_firstPage;
        QAction *m_lastPage;
        QAction *m_historyBack;
        QAction *m_historyNext;
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        QAction *m_addBookmark;
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        QAction *m_prevBookmark;
        QAction *m_nextBookmark;
        QAction *m_copy;
        QAction *m_find;
        QAction *m_findNext;
        QAction *m_saveAs;
        QAction *m_printPreview;
        QAction *m_showProperties;
        QAction *m_showEmbeddedFiles;
        QAction *m_exportAs;
        QAction *m_exportAsText;
        QAction *m_showPresentation;
        KToggleAction* m_showMenuBarAction;
        KToggleAction* m_showLeftPanel;
        KToggleFullScreenAction* m_showFullScreenAction;
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        QAction *m_aboutBackend;
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        QAction *m_reload;
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        bool m_actionsSearched;
        bool m_searchStarted;
        BrowserExtension *m_bExtension;

        KSelectAction * m_confGens;
        QList<Okular::ExportFormat> m_exportFormats;
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        QList<QAction*> m_bookmarkActions;
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        bool m_cliPresentation;
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        QString m_addBookmarkText;
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        QIcon m_addBookmarkIcon;
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        bool m_dummyMode;

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        KUrl m_realUrl;

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    private slots:
        void slotGeneratorPreferences();
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};
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class BrowserExtension : public KParts::BrowserExtension
{
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    Q_OBJECT
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    public:
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        BrowserExtension(Part*);
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    public slots:
        // Automatically detected by the host.
        void print();
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    private:
        Part *m_part;
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};
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#endif

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