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280 lines
9.5 KiB
280 lines
9.5 KiB
/*
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* This file is part of the KDE libraries
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* Copyright (C) 2003 Benjamin C Meyer (ben+kdelibs at meyerhome dot net)
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* Copyright (C) 2003 Waldo Bastian <bastian@kde.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef KCONFIGDIALOG_H
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#define KCONFIGDIALOG_H
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class KConfig;
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class KConfigSkeleton;
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class KConfigDialogManager;
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#include <kdialogbase.h>
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#include <qasciidict.h>
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/**
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* \short Standard %KDE configuration dialog class
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*
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* The KConfigDialog class provides an easy and uniform means of displaying
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* a settings dialog using KDialogBase, KConfigDialogManager and a
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* KConfigSkeleton derived settings class.
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*
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* KConfigDialog handles the enabling and disabling of buttons, creation
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* of the dialog, and deletion of the widgets. Because of
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* KConfigDialogManager, this class also manages: restoring
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* the settings, reseting them to the default values, and saving them. This
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* requires that the names of the widgets corresponding to configuration entries
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* have to have the same name plus an additional "kcfg_" prefix. For example the
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* widget named "kcfg_MyOption" would be associated with the configuration entry
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* "MyOption".
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*
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* Here is an example usage of KConfigDialog:
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*
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* \code
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* void KCoolApp::showSettings(){
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* if(KConfigDialog::showDialog("settings"))
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* return;
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* KConfigDialog *dialog = new KConfigDialog(this, "settings", MySettings::self(), KDialogBase::IconList);
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* dialog->addPage(new General(0, "General"), i18n("General") );
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* dialog->addPage(new Appearance(0, "Style"), i18n("Appearance") );
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* connect(dialog, SIGNAL(settingsChanged()), mainWidget, SLOT(loadSettings()));
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* connect(dialog, SIGNAL(settingsChanged()), this, SLOT(loadSettings()));
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* dialog->show();
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* }
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* \endcode
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*
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* Other than the above code, each class that has settings in the dialog should
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* have a loadSettings() type slot to read settings and perform any
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* necessary changes.
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*
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* Please note that using the setMainWidget method inherited from KDialogBase
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* currently yields broken behaviour at runtime; use @ref addPage() instead.
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*
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* @see KConfigSkeleton
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* @author Waldo Bastian <bastian@kde.org>
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* @since 3.2
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*/
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class KDEUI_EXPORT KConfigDialog : public KDialogBase {
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Q_OBJECT
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signals:
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/**
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* A widget in the dialog was modified.
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*/
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void widgetModified();
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/**
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* One or more of the settings have been permanently changed such as if
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* the user clicked on the Apply or Ok button.
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*/
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void settingsChanged();
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/**
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* One or more of the settings have been permanently changed such as if
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* the user clicked on the Apply or Ok button.
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* This signal is useful when using KConfigDialog to configure
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* items in a list. When emitted the main class would then know what
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* item in the list was actually changed.
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* @param dialogName the name of the dialog.
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*/
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void settingsChanged(const char *dialogName);
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public:
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/**
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* @param parent - The parent of this object. Even though the class
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* deletes itself the parent should be set so the dialog can be centered
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* with the application on the screen.
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*
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* @param name - The name of this object. The name is used in determining if
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* there can be more than one dialog at a time. Use names such as:
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* "Font Settings" or "Color Settings" and not just "Settings" in
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* applications where there is more than one dialog.
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*
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* @param dialogType - Type used in creating the dialog. See KDialogBase
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*
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* @param config - Config object containing settings.
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*
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* @param dialogButtons - Buttons that should show up on the dialog.
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*
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* @param defaultButton default button that is choosen by hitting the enter key.
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*
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* @param modal - Whether the dialog should be modal. To prevent more than one
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* non-modal settings dialog from showing the static function showDialog() can be
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* used in determining if the settings dialog already exists before creating
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* a new KConfigDialog object.
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*/
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// KDE4: Add the "separator" parameter as in KDialogBase
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// Make "dialogType" an int
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KConfigDialog( QWidget *parent, const char *name,
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KConfigSkeleton *config,
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DialogType dialogType = IconList,
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int dialogButtons = Default|Ok|Apply|Cancel|Help,
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ButtonCode defaultButton = Ok,
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bool modal=false );
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/**
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* Deconstructor, removes name from the list of open dialogs.
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* Deletes private class.
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* @see exists()
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*/
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~KConfigDialog();
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/**
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* Adds page to the dialog and to KConfigDialogManager. When an
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* application is done adding pages show() should be called to
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* display the dialog.
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* Note that after you call show() you can not add any more pages
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* to the dialog.
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* @param page - Pointer to the page that is to be added to the dialog.
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* This object is reparented.
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* @param itemName - Name of the page.
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* @param pixmapName - Name of the pixmap that should be used if needed.
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* @param header - Header text use in the list modes. Ignored in Tabbed
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* mode. If empty, the itemName text is used when needed.
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* @param manage - Whether KConfigDialogManager should manage the page or not.
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*/
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// KDE4: Add a default value for itemName & pixmapName
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void addPage( QWidget *page, const QString &itemName,
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const QString &pixmapName,
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const QString &header=QString::null,
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bool manage=true );
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/**
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* Adds page to the dialog that is managed by a custom KConfigDialogManager.
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* This is useful for dialogs that contain settings spread over more than
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* one configuration file and thus have/need more than one KConfigSkeleton.
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* When an application is done adding pages show() should be called to
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* display the dialog.
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* Note that after you call show() you can not add any more pages
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* to the dialog.
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* @param page - Pointer to the page that is to be added to the dialog.
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* This object is reparented.
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* @param config - Config object containing corresponding settings.
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* @param itemName - Name of the page.
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* @param pixmapName - Name of the pixmap that should be used if needed.
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* @param header - Header text use in the list modes. Ignored in Tabbed
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* mode. If empty, the itemName text is used when needed.
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*/
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// KDE4: Add a default value for itemName & pixmapName
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void addPage( QWidget *page, KConfigSkeleton *config,
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const QString &itemName,
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const QString &pixmapName,
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const QString &header=QString::null );
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/**
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* See if a dialog with the name 'name' already exists.
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* @see showDialog()
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* @param name - Dialog name to look for.
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* @return Pointer to widget or NULL if it does not exist.
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*/
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static KConfigDialog* exists( const char* name );
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/**
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* Attempts to show the dialog with the name 'name'.
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* @see exists()
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* @param name - The name of the dialog to show.
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* @return True if the dialog 'name' exists and was shown.
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*/
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static bool showDialog( const char* name );
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/**
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* Show the dialog.
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*/
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virtual void show();
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protected slots:
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/**
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* Update the settings from the dialog.
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* Virtual function for custom additions.
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*
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* Example use: User clicks Ok or Apply button in a configure dialog.
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*/
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virtual void updateSettings();
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/**
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* Update the dialog based on the settings.
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* Virtual function for custom additions.
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*
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* Example use: Initialisation of dialog.
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* Example use: User clicks Reset button in a configure dialog.
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*/
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virtual void updateWidgets();
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/**
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* Update the dialog based on the default settings.
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* Virtual function for custom additions.
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*
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* Example use: User clicks Defaults button in a configure dialog.
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*/
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virtual void updateWidgetsDefault();
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protected:
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/**
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* Returns whether the current state of the dialog is
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* different from the current configutation.
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* Virtual function for custom additions.
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*/
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virtual bool hasChanged() { return false; }
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/**
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* Returns whether the current state of the dialog is
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* the same as the default configuration.
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*/
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virtual bool isDefault() { return true; }
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protected slots:
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/**
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* Updates the Apply and Default buttons.
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*/
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void updateButtons();
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/**
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* Some setting was changed. Emit the signal with the dialogs name
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*/
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void settingsChangedSlot();
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private:
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/**
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* Internal function with common addPage code.
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*/
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void addPageInternal(QWidget *page, const QString &itemName,
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const QString &pixmapName, const QString &header);
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/**
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* Sets the connections from a manager to the dialog (and the other
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* way round) up.
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*/
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void setupManagerConnections(KConfigDialogManager *manager);
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private:
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/**
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* The list of existing dialogs.
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*/
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static QAsciiDict<KConfigDialog> openDialogs;
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class KConfigDialogPrivate;
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/**
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* Private class.
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*/
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KConfigDialogPrivate *d;
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};
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#endif //KCONFIGDIALOG_H
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