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tdelibs/tdeui/tdeconfigdialog.h

280 lines
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/*
* This file is part of the KDE libraries
* Copyright (C) 2003 Benjamin C Meyer (ben+tdelibs 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 TDECONFIGDIALOG_H
#define TDECONFIGDIALOG_H
class TDEConfig;
class TDEConfigSkeleton;
class TDEConfigDialogManager;
#include <kdialogbase.h>
#include <tqasciidict.h>
/**
* \short Standard %KDE configuration dialog class
*
* The TDEConfigDialog class provides an easy and uniform means of displaying
* a settings dialog using KDialogBase, TDEConfigDialogManager and a
* TDEConfigSkeleton derived settings class.
*
* TDEConfigDialog handles the enabling and disabling of buttons, creation
* of the dialog, and deletion of the widgets. Because of
* TDEConfigDialogManager, this class also manages: restoring
* the settings, reseting them to the default values, and saving them. This
* requires that the names of the widgets corresponding to configuration entries
* have to have the same name plus an additional "kcfg_" prefix. For example the
* widget named "kcfg_MyOption" would be associated with the configuration entry
* "MyOption".
*
* Here is an example usage of TDEConfigDialog:
*
* \code
* void KCoolApp::showSettings(){
* if(TDEConfigDialog::showDialog("settings"))
* return;
* TDEConfigDialog *dialog = new TDEConfigDialog(this, "settings", MySettings::self(), KDialogBase::IconList);
* dialog->addPage(new General(0, "General"), i18n("General") );
* dialog->addPage(new Appearance(0, "Style"), i18n("Appearance") );
* connect(dialog, TQT_SIGNAL(settingsChanged()), mainWidget, TQT_SLOT(loadSettings()));
* connect(dialog, TQT_SIGNAL(settingsChanged()), this, TQT_SLOT(loadSettings()));
* dialog->show();
* }
* \endcode
*
* Other than the above code, each class that has settings in the dialog should
* have a loadSettings() type slot to read settings and perform any
* necessary changes.
*
* Please note that using the setMainWidget method inherited from KDialogBase
* currently yields broken behaviour at runtime; use @ref addPage() instead.
*
* @see TDEConfigSkeleton
* @author Waldo Bastian <bastian@kde.org>
* @since 3.2
*/
class TDEUI_EXPORT TDEConfigDialog : public KDialogBase {
TQ_OBJECT
signals:
/**
* A widget in the dialog was modified.
*/
void widgetModified();
/**
* One or more of the settings have been permanently changed such as if
* the user clicked on the Apply or Ok button.
*/
void settingsChanged();
/**
* One or more of the settings have been permanently changed such as if
* the user clicked on the Apply or Ok button.
* This signal is useful when using TDEConfigDialog to configure
* items in a list. When emitted the main class would then know what
* item in the list was actually changed.
* @param dialogName the name of the dialog.
*/
void settingsChanged(const char *dialogName);
public:
/**
* @param parent - The parent of this object. Even though the class
* deletes itself the parent should be set so the dialog can be centered
* with the application on the screen.
*
* @param name - The name of this object. The name is used in determining if
* there can be more than one dialog at a time. Use names such as:
* "Font Settings" or "Color Settings" and not just "Settings" in
* applications where there is more than one dialog.
*
* @param dialogType - Type used in creating the dialog. See KDialogBase
*
* @param config - Config object containing settings.
*
* @param dialogButtons - Buttons that should show up on the dialog.
*
* @param defaultButton default button that is choosen by hitting the enter key.
*
* @param modal - Whether the dialog should be modal. To prevent more than one
* non-modal settings dialog from showing the static function showDialog() can be
* used in determining if the settings dialog already exists before creating
* a new TDEConfigDialog object.
*/
// KDE4: Add the "separator" parameter as in KDialogBase
// Make "dialogType" an int
TDEConfigDialog( TQWidget *parent, const char *name,
TDEConfigSkeleton *config,
DialogType dialogType = IconList,
int dialogButtons = Default|Ok|Apply|Cancel|Help,
ButtonCode defaultButton = Ok,
bool modal=false );
/**
* Deconstructor, removes name from the list of open dialogs.
* Deletes private class.
* @see exists()
*/
~TDEConfigDialog();
/**
* Adds page to the dialog and to TDEConfigDialogManager. When an
* application is done adding pages show() should be called to
* display the dialog.
* Note that after you call show() you can not add any more pages
* to the dialog.
* @param page - Pointer to the page that is to be added to the dialog.
* This object is reparented.
* @param itemName - Name of the page.
* @param pixmapName - Name of the pixmap that should be used if needed.
* @param header - Header text use in the list modes. Ignored in Tabbed
* mode. If empty, the itemName text is used when needed.
* @param manage - Whether TDEConfigDialogManager should manage the page or not.
*/
// KDE4: Add a default value for itemName & pixmapName
void addPage( TQWidget *page, const TQString &itemName,
const TQString &pixmapName,
const TQString &header=TQString::null,
bool manage=true );
/**
* Adds page to the dialog that is managed by a custom TDEConfigDialogManager.
* This is useful for dialogs that contain settings spread over more than
* one configuration file and thus have/need more than one TDEConfigSkeleton.
* When an application is done adding pages show() should be called to
* display the dialog.
* Note that after you call show() you can not add any more pages
* to the dialog.
* @param page - Pointer to the page that is to be added to the dialog.
* This object is reparented.
* @param config - Config object containing corresponding settings.
* @param itemName - Name of the page.
* @param pixmapName - Name of the pixmap that should be used if needed.
* @param header - Header text use in the list modes. Ignored in Tabbed
* mode. If empty, the itemName text is used when needed.
*/
// KDE4: Add a default value for itemName & pixmapName
void addPage( TQWidget *page, TDEConfigSkeleton *config,
const TQString &itemName,
const TQString &pixmapName,
const TQString &header=TQString::null );
/**
* See if a dialog with the name 'name' already exists.
* @see showDialog()
* @param name - Dialog name to look for.
* @return Pointer to widget or NULL if it does not exist.
*/
static TDEConfigDialog* exists( const char* name );
/**
* Attempts to show the dialog with the name 'name'.
* @see exists()
* @param name - The name of the dialog to show.
* @return True if the dialog 'name' exists and was shown.
*/
static bool showDialog( const char* name );
/**
* Show the dialog.
*/
virtual void show();
protected slots:
/**
* Update the settings from the dialog.
* Virtual function for custom additions.
*
* Example use: User clicks Ok or Apply button in a configure dialog.
*/
virtual void updateSettings();
/**
* Update the dialog based on the settings.
* Virtual function for custom additions.
*
* Example use: Initialisation of dialog.
* Example use: User clicks Reset button in a configure dialog.
*/
virtual void updateWidgets();
/**
* Update the dialog based on the default settings.
* Virtual function for custom additions.
*
* Example use: User clicks Defaults button in a configure dialog.
*/
virtual void updateWidgetsDefault();
protected:
/**
* Returns whether the current state of the dialog is
* different from the current configutation.
* Virtual function for custom additions.
*/
virtual bool hasChanged() { return false; }
/**
* Returns whether the current state of the dialog is
* the same as the default configuration.
*/
virtual bool isDefault() { return true; }
protected slots:
/**
* Updates the Apply and Default buttons.
*/
void updateButtons();
/**
* Some setting was changed. Emit the signal with the dialogs name
*/
void settingsChangedSlot();
private:
/**
* Internal function with common addPage code.
*/
void addPageInternal(TQWidget *page, const TQString &itemName,
const TQString &pixmapName, const TQString &header);
/**
* Sets the connections from a manager to the dialog (and the other
* way round) up.
*/
void setupManagerConnections(TDEConfigDialogManager *manager);
private:
/**
* The list of existing dialogs.
*/
static TQAsciiDict<TDEConfigDialog> openDialogs;
class TDEConfigDialogPrivate;
/**
* Private class.
*/
TDEConfigDialogPrivate *d;
};
#endif //TDECONFIGDIALOG_H