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/*
* This file is part of the KDE libraries
* Copyright (C) 2003 Benjamin C Meyer (ben+kdelibs at meyerhome dot net)
* Copyright (C) 2003 Waldo Bastian <bastian@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef KCONFIGDIALOGMANAGER_H
#define KCONFIGDIALOGMANAGER_H
#include <tqobject.h>
#include <tqptrlist.h>
#include "kdelibs_export.h"
class KConfigSkeleton;
class KConfigSkeletonItem;
class TQWidget;
class TQSqlPropertyMap;
/**
* @short Provides a means of automatically retrieving,
* saving and resetting KConfigSkeleton based settings in a dialog.
*
* The KConfigDialogManager class provides a means of automatically
* retrieving, saving and resetting basic settings.
* It also can emit signals when settings have been changed
* (settings were saved) or modified (the user changes a checkbox
* from on to off).
*
* The names of the widgets to be managed have to correspond to the names of the
* configuration entries in the KConfigSkeleton object plus an additional
* "kcfg_" prefix. For example a widget named "kcfg_MyOption" would be
* associated to the configuration entry "MyOption".
*
* KConfigDialogManager uses the TQSqlPropertyMap class to determine if it can do
* anything to a widget. Note that KConfigDialogManager doesn't require a
* database, it simply uses the functionality that is built into the
* TQSqlPropertyMap class. New widgets can be added to the map using
* TQSqlPropertyMap::installDefaultMap(). Note that you can't just add any
* class. The class must have a matching Q_PROPERTY(...) macro defined.
*
* For example (note that KColorButton is already added and it doesn't need to
* manually added):
*
* kcolorbutton.h defines the following property:
* \code
* Q_PROPERTY( TQColor color READ color WRITE setColor )
* \endcode
*
* To add KColorButton the following code would be inserted in the main.
*
* \code
* kapp->installKDEPropertyMap();
* TQSqlPropertyMap *map = TQSqlPropertyMap::defaultMap();
* map->insert("KColorButton", "color");
* \endcode
*
* If you add a new widget to the TQSqlPropertyMap and wish to be notified when
* it is modified you should add its signal using addWidgetChangedSignal().
* @since 3.2
* @author Benjamin C Meyer <ben+kdelibs at meyerhome dot net>
* @author Waldo Bastian <bastian@kde.org>
*/
class KDECORE_EXPORT KConfigDialogManager : public TQObject {
Q_OBJECT
signals:
/**
* One or more of the settings have been saved (such as when the user
* clicks on the Apply button). This is only emitted by updateSettings()
* whenever one or more setting were changed and consequently saved.
*/
void settingsChanged();
/**
* TODO: Verify
* One or more of the settings have been changed.
* @param widget - The widget group (pass in via addWidget()) that
* contains the one or more modified setting.
* @see settingsChanged()
*/
void settingsChanged( TQWidget *widget );
/**
* If retrieveSettings() was told to track changes then if
* any known setting was changed this signal will be emitted. Note
* that a settings can be modified several times and might go back to the
* original saved state. hasChanged() will tell you if anything has
* actually changed from the saved values.
*/
void widgetModified();
public:
/**
* Constructor.
* @param parent Dialog widget to manage
* @param conf Object that contains settings
* @param name - Object name.
*/
KConfigDialogManager(TQWidget *parent, KConfigSkeleton *conf, const char *name=0);
/**
* Destructor.
*/
~KConfigDialogManager();
/**
* Add additional widgets to manage
* @param widget Additional widget to manage, inlcuding all its children
*/
void addWidget(TQWidget *widget);
/**
* Returns whether the current state of the known widgets are
* different from the state in the config object.
*/
bool hasChanged();
/**
* Returns whether the current state of the known widgets are
* the same as the default state in the config object.
*/
bool isDefault();
public slots:
/**
* Traverse the specified widgets, saving the settings of all known
* widgets in the settings object.
*
* Example use: User clicks Ok or Apply button in a configure dialog.
*/
void updateSettings();
/**
* Traverse the specified widgets, sets the state of all known
* widgets according to the state in the settings object.
*
* Example use: Initialisation of dialog.
* Example use: User clicks Reset button in a configure dialog.
*/
void updateWidgets();
/**
* Traverse the specified widgets, sets the state of all known
* widgets according to the default state in the settings object.
*
* Example use: User clicks Defaults button in a configure dialog.
*/
void updateWidgetsDefault();
protected:
/**
* @param trackChanges - If any changes by the widgets should be tracked
* set true. This causes the emitting the modified() signal when
* something changes.
* TODO: @return bool - True if any setting was changed from the default.
*/
void init(bool trackChanges);
/**
* Recursive function that finds all known children.
* Goes through the children of widget and if any are known and not being
* ignored, stores them in currentGroup. Also checks if the widget
* should be disabled because it is set immutable.
* @param widget - Parent of the children to look at.
* @param trackChanges - If true then tracks any changes to the children of
* widget that are known.
* @return bool - If a widget was set to something other then its default.
*/
bool parseChildren(const TQWidget *widget, bool trackChanges);
/**
* Set a property
*/
void setProperty(TQWidget *w, const TQVariant &v);
/**
* Retrieve a property
*/
TQVariant property(TQWidget *w);
/**
* Setup secondary widget properties
*/
void setupWidget(TQWidget *widget, KConfigSkeletonItem *item);
protected:
/**
* KConfigSkeleton object used to store settings
*/
KConfigSkeleton *m_conf;
/**
* Dialog being managed
*/
TQWidget *m_dialog;
/**
* Pointer to the property map for easy access.
*/
TQSqlPropertyMap *propertyMap;
/**
* Map of the classes and the signals that they emit when changed.
*/
TQMap<TQString, TQCString> changedMap;
private:
class Private;
/**
* KConfigDialogManager Private class.
*/
Private *d;
};
#endif // KCONFIGDIALOGMANAGER_H
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