/***************************************************** vim:set ts=4 sw=4 sts=4:
  KControl module for KTTSD configuration and job management
  -------------------
  Copyright 2002-2003 by José Pablo Ezequiel "Pupeno" Fernández <pupeno@kde.org>
  Copyright 2004-2005 by Gary Cramblitt <garycramblitt@comcast.net>
  Copyright 2009 by Jeremy Whiting <jpwhiting@kde.org>
  -------------------
  Original author: José Pablo Ezequiel "Pupeno" Fernández <pupeno@kde.org>
  Current Maintainer: Jeremy Whiting <jpwhiting@kde.org>

  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.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 ***************************************************************************/

/**
* @author José Pablo Ezequiel "Pupeno" Fernández
* @author Gary Cramblitt
*/

#ifndef KCMKTTSMGR_H
#define KCMKTTSMGR_H

// Qt includes.
#include <QtCore/QMap>
#include <QtCore/qabstractitemmodel.h>

// KDE includes.
#include <kcmodule.h>
#include <kdebug.h>

// KTTS includes.
#include "talkercode.h"
#include "talkerlistmodel.h"
#include "addtalker.h"
#include "ui_kcmkttsmgrwidget.h"
#include "kspeechinterface.h"

class KttsFilterConf;
#include <QTreeWidget>
#include <QTreeWidgetItem>
class KAboutData;
class KConfig;
class KttsJobMgr;

class FilterItem
{
public:
    QString id;
    QString userFilterName;
    QString plugInName;
    QString desktopEntryName;
    bool enabled;
    bool multiInstance;
};

typedef QList<FilterItem> FilterList;

class FilterListModel : public QAbstractListModel
{
    Q_OBJECT
public:
    explicit FilterListModel(FilterList filters = FilterList(), QObject *parent = 0);

    FilterList datastore() { return m_filters; }
    void setDatastore(FilterList filters = FilterList()) { m_filters = filters; }
    int rowCount(const QModelIndex &parent = QModelIndex()) const;
    int columnCount(const QModelIndex &parent = QModelIndex()) const;
    QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const;
    QModelIndex parent(const QModelIndex & index ) const;
    QVariant data(const QModelIndex &index, int role) const;
    QVariant headerData(int section, Qt::Orientation orientation,
        int role = Qt::DisplayRole) const;
    Qt::ItemFlags flags(const QModelIndex &index) const;
    bool removeRow(int row, const QModelIndex & parent = QModelIndex());

    FilterItem getRow(int row) const;
    bool appendRow(FilterItem& filter);
    bool updateRow(int row, FilterItem& filter);
    bool swap(int i, int j);
    void clear();
protected:
    FilterList m_filters;
};

class KCMKttsMgr :
    public KCModule,
    private Ui::KCMKttsMgrWidget
{
    Q_OBJECT

    public:
        KCMKttsMgr(QWidget *parent, const QVariantList &);

        ~KCMKttsMgr();

        /**
        * This method is invoked whenever the module should read its
        * configuration (most of the times from a config file) and update the
        * user interface. This happens when the user clicks the "Reset" button in
        * the control center, to undo all of his changes and restore the currently
        * valid settings. NOTE that this is not called after the modules is loaded,
        * so you probably want to call this method in the constructor.
        */
        void load();

        /**
        * This function gets called when the user wants to save the settings in
        * the user interface, updating the config files or wherever the
        * configuration is stored. The method is called when the user clicks "Apply"
        * or "Ok".
        */
        void save();

        /**
        * This function is called to set the settings in the module to sensible
        * default values. It gets called when hitting the "Default" button. The
        * default values should probably be the same as the ones the application
        * uses when started without a config file.
        */
        void defaults();

        /**
        * This is a static method which gets called to realize the modules settings
        * durign the startup of KDE. NOTE that most modules do not implement this
        * method, but modules like the keyboard and mouse modules, which directly
        * interact with the X-server, need this method. As this method is static,
        * it can avoid to create an instance of the user interface, which is often
        * not needed in this case.
        */
        static void init();

        /**
        * This function returns the small quickhelp.
        * That is displayed in the sidebar in the KControl
        */
        QString quickHelp() const;

        /**
        * Return the about information for this module
        */
        const KAboutData* aboutData() const;

    public slots:
        /**
        * This slot is used to emit the signal changed when any widget changes the configuration
        */
        void configChanged()
        {
            if (!m_suppressConfigChanged)
            {
                // kDebug() << "KCMKttsMgr::configChanged: Running";
                m_changed = true;
                emit changed(true);
            }
        }

    protected slots:
        /** DCOP Methods connected to D-Bus Signals emitted by KTTSD. */
        /** Most of these are not used */

        /**
        * This slot is called when Jovie starts or restarts after a call to reinit.
        */
        void jovieStarted();

        /**
        * This slot is called just before Jovie exits.
        */
        void jovieExiting();

        void slotServiceUnregistered( const QString & );
        void slotServiceOwnerChanged( const QString &, const QString &, const QString & );
    private:
        enum widgetPages
        {
            wpGeneral = 0,          // General tab.
            wpTalkers = 1,          // Talkers tab.
            wpFilters = 2,          // Filters tab.
            wpJobs = 3              // Jobs tab.
        };

        /**
        * Given a language code and plugin name, returns a normalized default talker code.
        * @param languageCode     Language code.
        * @param plugInName       Name of the plugin.
        * @return                 Full normalized talker code.
        *
        * Example returned from defaultTalkerCode("en", "Festival")
        *   <voice lang="en" name="fixed" gender="neutral"/>
        *   <prosody volume="medium" rate="medium"/>
        *   <kttsd synthesizer="Festival" />
        */
        QString defaultTalkerCode(const QString &languageCode, const QString &plugInName);

        /**
        * Loads the configuration plugin for a named Filter plugin.
        * @param plugInName       DesktopEntryName of the plugin.
        * @return                 Pointer to the configuration plugin for the Filter.
        */
        KttsFilterConf* loadFilterPlugin(const QString& plugInName);

        /**
        * Display the Filter Configuration Dialog.
        */
        void configureFilterItem();
        void configureFilter();

        /**
        * Add a filter.
        */
        void addFilter();

        /**
        * Remove a filter.
        */
        void removeFilter();

        /**
        * Count number of configured Filters with the specified plugin name.
        */
        int countFilterPlugins(const QString& filterPlugInName);

        /**
         * Uses KTrader to convert a translated Filter Plugin Name to DesktopEntryName.
         * @param name                   The translated plugin name.  From Name= line in .desktop file.
         * @return                       DesktopEntryName.  The name of the .desktop file (less .desktop).
         *                               QString() if not found.
         */
        QString FilterNameToDesktopEntryName(const QString& name);

        /**
         * Uses KTrader to convert a DesktopEntryName into a translated Filter Plugin Name.
         * @param desktopEntryName       The DesktopEntryName.
         * @return                       The translated Name of the plugin, from Name= line in .desktop file.
         */
        QString FilterDesktopEntryNameToName(const QString& desktopEntryName);


        /**
        * A convenience method that finds an item in a TreeViewWidget, assuming there is at most
        * one occurrence of the item.  Returns 0 if not found.
        * @param tw                     The TreeViewWidget to search.
        * @param sought                 The string sought.
        * @param col                    Column of the TreeViewWidget to search.
        * @return                       The item of the TreeViewWidget found or null if not found.
        *
        * An exact match is performed.
        */
        //QTreeWidgetItem* findTreeWidgetItem(QTreeWidget* tw, const QString& sought, int col);

        /**
        * DBUS KSpeech Interface.
        */
        org::kde::KSpeech* m_kspeech;

        /**
        * Object holding all the configuration
        */
        KConfig *m_config;

        /**
        * KTTS Job Manager.
        */
        KttsJobMgr *m_jobMgrWidget;

        /**
        * Plugin configuration dialog.
        */
        KDialog* m_configDlg;

        /**
        * Filter Plugin currently loaded into configuration dialog.
        */
        KttsFilterConf *m_loadedFilterPlugIn;

        /**
        * Model containing list of Talker Codes.
        */
        TalkerListModel m_talkerListModel;

        /**
        * Last talker ID.  Used to generate a new ID.
        */
        int m_lastTalkerID;

        /**
        * Model containing normal filters.
        */
        FilterListModel m_filterListModel;

        /**
        * Last filter ID.  Used to generate a new ID.
        */
        int m_lastFilterID;

        /**
        * True if the configuration has been changed.
        */
        bool m_changed;

        /**
        * When True, suppresses emission of changed() signal.  Used to suppress this
        * signal while loading configuration.
        */
        bool m_suppressConfigChanged;

        /**
        * Dictionary mapping language names to codes.
        */
        QMap<QString, QString> m_languagesToCodes;

        /**
        * A QMap of languages codes indexed by synthesizer that supports them.
        */
        //SynthToLangMap m_synthToLangMap;

    private slots:
        /**
        * Update the status of the Talker/Filter buttons.
        */
        void updateTalkerButtons();
        void updateFilterButtons();

        /**
        * Slots for the Talker/Filter Configuration dialogs.
        */
        void slotConfigTalkerDlg_ConfigChanged();
        void slotConfigFilterDlg_ConfigChanged();
        void slotConfigTalkerDlg_DefaultClicked();
        void slotConfigFilterDlg_DefaultClicked();
        void slotConfigTalkerDlg_CancelClicked();
        void slotConfigFilterDlg_CancelClicked();

        /**
        * General tab slots.
        */
        void slotEnableJovie_toggled(bool checked);

        /**
        * Talker tab slots.
        */
        void slotAddTalkerButton_clicked();
        void slotRemoveTalkerButton_clicked();
        void slotHigherTalkerPriorityButton_clicked();
        void slotLowerTalkerPriorityButton_clicked();
        void slotConfigureTalkerButton_clicked();

        /**
        * Filters tab slots.
        */
        void slotFilterListView_clicked(const QModelIndex & index);
        void slotAddFilterButton_clicked();
        void slotRemoveFilterButton_clicked();
        void slotHigherFilterPriorityButton_clicked();
        void slotLowerFilterPriorityButton_clicked();
        void slotConfigureFilterButton_clicked();

        /**
        * Other slots.
        */
        void slotTabChanged();
};

#endif