/***************************************************************************
 *   Copyright (C) 2001-2002 by Bernd Gehrmann                             *
 *   bernd@kdevelop.org                                                    *
 *   Copyright (C) 2003 by Mario Scalas (VCS Support)                      *
 *   mario.scalas@libero.it                                                *
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef _FILETREEWIDGET_H_
#define _FILETREEWIDGET_H_

#include <tqguardedptr.h>
#include <tdefiletreeview.h>

#include <kdevversioncontrol.h>

class FileViewPart;
class FileTreeViewWidgetImpl;
class KDevVersionControl;

/**
* This is FileTree widget for listing files belonging to the project. It does feature:
*   - dynamic updates reflecting the state of the project dir and subdirs
*   - VCS support for showing VCS fields like state, working and repository revisions
*   - bolding the filenames belonging to project to distinguish them from the others
*   - dynamic filtering so the user has not to care about temporary files eating screen space ;-)
*
* Design notes
* The class uses two different implementations (referred by m_impl data member):
* - @see VCSFileTreeWidgetImpl for VCS support
*   VCS support is detencted by the constructor looking for the @see KDevPlugin::versionControl() member:
*   if the current VCS plug-in does offer a @see KDevVCSFileInfoProvider object than this will be used for
*   querying about files' data. If neither VCS plugin nor valid info provider is found then the filetreeview
*   will fallback to the standard implementation
* - @see StdFileTreeWidgetImpl for standard visualization, just like the KFileTreeView
*
* Each implementation must provide a branch item factory which the file filetree will delegate the creation
* of specific KFileTreeViewItem-derived objects: currently they are both defined in the same .h/.cpp files
* of the implementations listed above.
*
*/
class FileTreeWidget : public KFileTreeView
{
    Q_OBJECT
  
public:
    FileTreeWidget( FileViewPart *part, TQWidget *parent, KDevVCSFileInfoProvider *infoProvider );
    virtual ~FileTreeWidget();

    void openDirectory(const TQString &dirName);
    bool shouldBeShown( KFileTreeViewItem* item );

    TQString projectDirectory();
    bool isInProject(const TQString &fileName) const;

    FileViewPart *part() const { return m_part; }

    //KDevVCSFileInfoProvider *vcsFileInfoProvider() const;
    void applyHidePatterns( const TQString &hidePatterns );
    TQString hidePatterns() const;

    bool showNonProjectFiles() const;

public slots:
    void hideOrShow();


private slots:
    void slotItemExecuted(TQListViewItem *item);
    void slotContextMenu(TDEListView *, TQListViewItem *item, const TQPoint &p);

    void changeActiveDirectory( const TQString&, const TQString& );
    void finishPopulate(KFileTreeViewItem* item);

    void addProjectFiles( TQStringList const & fileList, bool constructing = false );
    void removeProjectFiles( TQStringList const & fileList );
    //! We must guard against unloading the used VCS plug-in when using it: we
    //! fall back to the implementation (a file view without VCS fields, only filenames)
    void slotImplementationInvalidated();

private:
    bool matchesHidePattern(const TQString &fileName);
    KDevVersionControl *versionControl() const;

    TQStringList m_hidePatterns;
    /**
     * @brief Set of all the files in this project.
     *
     * In addition to all the project files,
     * we also keep a list of all directories containing any project files -
     * effectively holding the whole project tree.
     *
     * @bug
     * Well, it is not just a plain set,
     * but rather a map with next-to-useless element value,
     * keyed by names of files.
     * QT3 does not seem to have a set datatype,
     * thus we use the TQMap type instead.
     */
    TQMap<TQString, bool> m_projectFiles;

    FileViewPart *m_part;
    KFileTreeBranch *m_rootBranch;
    TQGuardedPtr<FileTreeViewWidgetImpl> m_impl;
};

#endif