1169 lines
42 KiB
C++
1169 lines
42 KiB
C++
/*
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* Copyright 2006-2007 by Aaron Seigo <aseigo@kde.org>
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* Copyright 2007 by Riccardo Iaconelli <riccardo@kde.org>
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* Copyright 2008 by Ménard Alexis <darktears31@gmail.com>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU 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
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef PLASMA_APPLET_H
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#define PLASMA_APPLET_H
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#include <QtGui/QGraphicsItem>
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#include <QtGui/QGraphicsWidget>
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#include <QtGui/QIcon>
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#include <kconfiggroup.h>
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#include <kgenericfactory.h>
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#include <kplugininfo.h>
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#include <kshortcut.h>
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#include <plasma/configloader.h>
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#include <plasma/packagestructure.h>
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#include <plasma/plasma.h>
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#include <plasma/animator.h>
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#include <plasma/version.h>
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#include <plasma/framesvg.h>
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class QWidget;
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class KConfigDialog;
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class QGraphicsView;
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class KActionCollection;
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namespace Plasma
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{
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class AppletPrivate;
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class Containment;
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class Context;
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class DataEngine;
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class Extender;
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class ExtenderItem;
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class Package;
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/**
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* @class Applet plasma/applet.h <Plasma/Applet>
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*
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* @short The base Applet class
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*
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* Applet provides several important roles for add-ons widgets in Plasma.
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*
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* First, it is the base class for the plugin system and therefore is the
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* interface to applets for host applications. It also handles the life time
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* management of data engines (e.g. all data engines accessed via
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* Applet::dataEngine(const QString&) are properly deref'd on Applet
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* destruction), background painting (allowing for consistent and complex
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* look and feel in just one line of code for applets), loading and starting
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* of scripting support for each applet, providing access to the associated
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* plasmoid package (if any) and access to configuration data.
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*
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* See techbase.kde.org for tutorials on writing Applets using this class.
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*/
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class PLASMA_EXPORT Applet : public QGraphicsWidget
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{
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Q_OBJECT
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Q_PROPERTY(bool hasConfigurationInterface READ hasConfigurationInterface)
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Q_PROPERTY(QString name READ name)
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Q_PROPERTY(QString pluginName READ pluginName)
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Q_PROPERTY(QString category READ category)
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Q_PROPERTY(ImmutabilityType immutability READ immutability WRITE setImmutability)
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Q_PROPERTY(bool hasFailedToLaunch READ hasFailedToLaunch WRITE setFailedToLaunch)
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Q_PROPERTY(bool isBusy READ isBusy WRITE setBusy) //KDE5: remove
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Q_PROPERTY(bool busy READ isBusy WRITE setBusy)
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Q_PROPERTY(bool configurationRequired READ configurationRequired WRITE setConfigurationRequired)
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Q_PROPERTY(QRectF geometry READ geometry WRITE setGeometry)
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Q_PROPERTY(bool shouldConserveResources READ shouldConserveResources)
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Q_PROPERTY(uint id READ id)
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Q_PROPERTY(bool userConfiguring READ isUserConfiguring)
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Q_PROPERTY(BackgroundHints backgroundHints READ backgroundHints WRITE setBackgroundHints)
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Q_ENUMS(BackgroundHints)
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public:
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typedef QList<Applet*> List;
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typedef QHash<QString, Applet*> Dict;
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/**
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* Description on how draw a background for the applet
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*/
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enum BackgroundHint {
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NoBackground = 0, /**< Not drawing a background under the
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applet, the applet has its own implementation */
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StandardBackground = 1, /**< The standard background from the theme is drawn */
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TranslucentBackground = 2, /**< An alternate version of the background is drawn,
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usually more translucent */
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DefaultBackground = StandardBackground /**< Default settings:
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both standard background */
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};
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Q_DECLARE_FLAGS(BackgroundHints, BackgroundHint)
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~Applet();
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/**
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* @return a package structure representing an Applet
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*/
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static PackageStructure::Ptr packageStructure();
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/**
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* @return the id of this applet
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*/
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uint id() const;
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/**
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* Returns the KConfigGroup to access the applets configuration.
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*
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* This config object will write to an instance
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* specific config file named \<appletname\>\<instanceid\>rc
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* in the Plasma appdata directory.
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**/
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KConfigGroup config() const;
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/**
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* Returns a config group with the name provided. This ensures
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* that the group name is properly namespaced to avoid collision
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* with other applets that may be sharing this config file
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*
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* @param group the name of the group to access
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**/
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KConfigGroup config(const QString &group) const;
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/**
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* Saves state information about this applet that will
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* be accessed when next instantiated in the restore(KConfigGroup&) method.
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*
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* This method does not need to be reimplmented by Applet
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* subclasses, but can be useful for Applet specializations
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* (such as Containment) to do so.
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*
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* Applet subclasses may instead want to reimplement saveState().
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**/
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virtual void save(KConfigGroup &group) const;
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/**
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* Restores state information about this applet saved previously
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* in save(KConfigGroup&).
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*
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* This method does not need to be reimplmented by Applet
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* subclasses, but can be useful for Applet specializations
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* (such as Containment) to do so.
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**/
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virtual void restore(KConfigGroup &group);
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/**
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* Returns a KConfigGroup object to be shared by all applets of this
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* type.
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*
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* This config object will write to an applet-specific config object
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* named plasma_\<appletname\>rc in the local config directory.
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*/
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KConfigGroup globalConfig() const;
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/**
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* Returns the config skeleton object from this applet's package,
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* if any.
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*
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* @return config skeleton object, or 0 if none
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**/
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ConfigLoader *configScheme() const;
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/**
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* Loads the given DataEngine
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*
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* Tries to load the data engine given by @p name. Each engine is
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* only loaded once, and that instance is re-used on all subsequent
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* requests.
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*
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* If the data engine was not found, an invalid data engine is returned
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* (see DataEngine::isValid()).
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*
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* Note that you should <em>not</em> delete the returned engine.
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*
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* @param name Name of the data engine to load
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* @return pointer to the data engine if it was loaded,
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* or an invalid data engine if the requested engine
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* could not be loaded
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*/
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Q_INVOKABLE DataEngine *dataEngine(const QString &name) const;
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/**
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* Accessor for the associated Package object if any.
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* Generally, only Plasmoids come in a Package.
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*
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* @return the Package object, or 0 if none
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**/
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const Package *package() const;
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/**
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* Returns the view this widget is visible on, or 0 if none can be found.
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* @warning do NOT assume this will always return a view!
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* a null view probably means that either plasma isn't finished loading, or your applet is
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* on an activity that's not being shown anywhere.
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*/
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QGraphicsView *view() const;
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/**
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* Maps a QRect from a view's coordinates to local coordinates.
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* @param view the view from which rect should be mapped
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* @param rect the rect to be mapped
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*/
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QRectF mapFromView(const QGraphicsView *view, const QRect &rect) const;
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/**
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* Maps a QRectF from local coordinates to a view's coordinates.
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* @param view the view to which rect should be mapped
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* @param rect the rect to be mapped
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*/
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QRect mapToView(const QGraphicsView *view, const QRectF &rect) const;
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/**
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* Reccomended position for a popup window like a menu or a tooltip
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* given its size
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* @param s size of the popup
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* @returns reccomended position
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*/
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QPoint popupPosition(const QSize &s) const;
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/**
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* @since 4.4
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* Reccomended position for a popup window like a menu or a tooltip
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* given its size
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* @param s size of the popup
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* @param alignment alignment of the popup, valid flags are Qt::AlignLeft, Qt::AlignRight and Qt::AlignCenter
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* @returns reccomended position
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*/
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QPoint popupPosition(const QSize &s, Qt::AlignmentFlag alignment) const;
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/**
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* Called when any of the geometry constraints have been updated.
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* This method calls constraintsEvent, which may be reimplemented,
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* once the Applet has been prepared for updating the constraints.
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*
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* @param constraints the type of constraints that were updated
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*/
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void updateConstraints(Plasma::Constraints constraints = Plasma::AllConstraints);
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/**
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* Returns the current form factor the applet is being displayed in.
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*
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* @see Plasma::FormFactor
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*/
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virtual FormFactor formFactor() const;
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/**
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* Returns the location of the scene which is displaying applet.
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*
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* @see Plasma::Location
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*/
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virtual Location location() const;
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/**
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* Returns the workspace context which the applet is operating in
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*/
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Context *context() const;
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/**
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* @return the preferred aspect ratio mode for placement and resizing
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*/
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Plasma::AspectRatioMode aspectRatioMode() const;
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/**
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* Sets the preferred aspect ratio mode for placement and resizing
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*/
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void setAspectRatioMode(Plasma::AspectRatioMode);
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/**
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* Returns a list of all known applets.
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* This may skip applets based on security settings and ExcludeCategories in the application's config.
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*
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* @param category Only applets matchin this category will be returned.
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* Useful in conjunction with knownCategories.
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* If "Misc" is passed in, then applets without a
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* Categories= entry are also returned.
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* If an empty string is passed in, all applets are
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* returned.
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* @param parentApp the application to filter applets on. Uses the
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* X-KDE-ParentApp entry (if any) in the plugin info.
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* The default value of QString() will result in a
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* list containing only applets not specifically
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* registered to an application.
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* @return list of applets
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**/
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static KPluginInfo::List listAppletInfo(const QString &category = QString(),
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const QString &parentApp = QString());
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/**
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* Returns a list of all known applets associated with a certain mimetype.
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*
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* @return list of applets
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**/
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static KPluginInfo::List listAppletInfoForMimetype(const QString &mimetype);
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/**
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* Returns a list of all known applets associated with a certain URL.
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*
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* @since 4.4
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* @return list of applets
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**/
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static KPluginInfo::List listAppletInfoForUrl(const QUrl &url);
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/**
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* Returns a list of all the categories used by installed applets.
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*
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* @param parentApp the application to filter applets on. Uses the
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* X-KDE-ParentApp entry (if any) in the plugin info.
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* The default value of QString() will result in a
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* list containing only applets not specifically
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* registered to an application.
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* @return list of categories
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* @param visibleOnly true if it should only return applets that are marked as visible
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*/
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static QStringList listCategories(const QString &parentApp = QString(),
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bool visibleOnly = true);
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/**
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* Sets the list of custom categories that are used in addition to the default
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* set of categories known to libplasma for Applets.
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* @arg categories a list of categories
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* @since 4.3
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*/
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void setCustomCategories(const QStringList &categories);
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/**
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* @return the list of custom categories known to libplasma
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* @since 4.3
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*/
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QStringList customCategories();
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/**
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* Attempts to load an applet from a package
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*
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* Returns a pointer to the applet if successful.
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* The caller takes responsibility for the applet, including
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* deleting it when no longer needed.
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*
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* @param path the path to the package
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* @param appletId unique ID to assign the applet, or zero to have one
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* assigned automatically.
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* @param args to send the applet extra arguments
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* @return a pointer to the loaded applet, or 0 on load failure
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* @since 4.3
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**/
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static Applet *loadPlasmoid(const QString &path, uint appletId = 0,
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const QVariantList &args = QVariantList());
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/**
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* Attempts to load an applet
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*
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* Returns a pointer to the applet if successful.
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* The caller takes responsibility for the applet, including
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* deleting it when no longer needed.
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*
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* @param name the plugin name, as returned by KPluginInfo::pluginName()
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* @param appletId unique ID to assign the applet, or zero to have one
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* assigned automatically.
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* @param args to send the applet extra arguments
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* @return a pointer to the loaded applet, or 0 on load failure
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**/
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static Applet *load(const QString &name, uint appletId = 0,
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const QVariantList &args = QVariantList());
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/**
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* Attempts to load an applet
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*
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* Returns a pointer to the applet if successful.
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* The caller takes responsibility for the applet, including
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* deleting it when no longer needed.
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*
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* @param info KPluginInfo object for the desired applet
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* @param appletId unique ID to assign the applet, or zero to have one
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* assigned automatically.
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* @param args to send the applet extra arguments
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* @return a pointer to the loaded applet, or 0 on load failure
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**/
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static Applet *load(const KPluginInfo &info, uint appletId = 0,
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const QVariantList &args = QVariantList());
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/**
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* Get the category of the given applet
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*
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* @param applet a KPluginInfo object for the applet
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*/
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static QString category(const KPluginInfo &applet);
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/**
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* Get the category of the given applet
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*
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* @param appletName the name of the applet
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*/
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static QString category(const QString &appletName);
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/**
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* This method is called when the interface should be painted.
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*
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* @param painter the QPainter to use to do the paintiner
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* @param option the style options object
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* @param contentsRect the rect to paint within; automatically adjusted for
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* the background, if any
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**/
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virtual void paintInterface(QPainter *painter,
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const QStyleOptionGraphicsItem *option,
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const QRect &contentsRect);
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/**
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* Returns the user-visible name for the applet, as specified in the
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* .desktop file.
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*
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* @return the user-visible name for the applet.
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**/
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QString name() const;
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/**
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* @return the font currently set for this widget
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**/
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QFont font() const;
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/**
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* Returns the plugin name for the applet
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*/
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QString pluginName() const;
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/**
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* Whether the applet should conserve resources. If true, try to avoid doing stuff which
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* is computationally heavy. Try to conserve power and resources.
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*
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* @return true if it should conserve resources, false if it does not.
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*/
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bool shouldConserveResources() const;
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/**
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* Returns the icon related to this applet
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**/
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QString icon() const;
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/**
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* Returns the category the applet is in, as specified in the
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* .desktop file.
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*/
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QString category() const;
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/**
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* @return The type of immutability of this applet
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*/
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ImmutabilityType immutability() const;
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void paintWindowFrame(QPainter *painter,
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const QStyleOptionGraphicsItem *option, QWidget *widget);
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/**
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* If for some reason, the applet fails to get up on its feet (the
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* library couldn't be loaded, necessary hardware support wasn't found,
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* etc..) this method returns true
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**/
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bool hasFailedToLaunch() const;
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/**
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* @return true if the applet is busy and is showing an indicator widget for that
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*/
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bool isBusy() const;
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/**
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* @return true if the applet currently needs to be configured,
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* otherwise, false
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*/
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bool configurationRequired() const;
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/**
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* @return true if this plasmoid provides a GUI configuration
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**/
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bool hasConfigurationInterface() const;
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/**
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* Returns a list of context-related QAction instances.
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*
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* This is used e.g. within the \a DesktopView to display a
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* contextmenu.
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*
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* @return A list of actions. The default implementation returns an
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* empty list.
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**/
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virtual QList<QAction*> contextualActions();
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/**
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* Returns the QAction with the given name from our collection
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*/
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Q_INVOKABLE QAction *action(QString name) const;
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/**
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* Adds the action to our collection under the given name
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*/
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void addAction(QString name, QAction *action);
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/**
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* Sets the BackgroundHints for this applet @see BackgroundHint
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*
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* @param hints the BackgroundHint combination for this applet
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*/
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void setBackgroundHints(const BackgroundHints hints);
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/**
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* @return BackgroundHints flags combination telling if the standard background is shown
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* and if it has a drop shadow
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*/
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BackgroundHints backgroundHints() const;
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/**
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* @return true if this Applet is currently being used as a Containment, false otherwise
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*/
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bool isContainment() const;
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/**
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* This method returns screen coordinates for the widget; this method can be somewhat
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* expensive and should ONLY be called when screen coordinates are required. For
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* example when positioning top level widgets on top of the view to create the
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* appearance of unit. This should NOT be used for popups (@see popupPosition) or
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* for normal widget use (use Plasma:: widgets or QGraphicsProxyWidget instead).
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*
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* @return a rect of the applet in screen coordinates.
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*/
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QRect screenRect() const;
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/**
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* Reimplemented from QGraphicsItem
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**/
|
|
int type() const;
|
|
enum {
|
|
Type = Plasma::AppletType
|
|
};
|
|
|
|
/**
|
|
* @return the Containment, if any, this applet belongs to
|
|
**/
|
|
Containment *containment() const;
|
|
|
|
/**
|
|
* Sets the global shorcut to associate with this widget.
|
|
*/
|
|
void setGlobalShortcut(const KShortcut &shortcut);
|
|
|
|
/**
|
|
* @return the global shortcut associated with this wiget, or
|
|
* an empty shortcut if no global shortcut is associated.
|
|
*/
|
|
KShortcut globalShortcut() const;
|
|
|
|
/**
|
|
* @return true is there is a popup assoiated with this Applet
|
|
* showing, such as the dialog of a PopupApplet. May be reimplemented
|
|
* for custom popup implementations.
|
|
*/
|
|
virtual bool isPopupShowing() const;
|
|
|
|
/**
|
|
* associate actions with this widget, including ones added after this call.
|
|
* needed to make keyboard shortcuts work.
|
|
*/
|
|
virtual void addAssociatedWidget(QWidget *widget);
|
|
|
|
/**
|
|
* un-associate actions from this widget, including ones added after this call.
|
|
* needed to make keyboard shortcuts work.
|
|
*/
|
|
virtual void removeAssociatedWidget(QWidget *widget);
|
|
|
|
/**
|
|
* Gets called when an extender item has to be initialized after a plasma restart. If you
|
|
* create ExtenderItems in your applet, you should implement this function to again create
|
|
* the widget that should be shown in this extender item. This function might look something
|
|
* like this:
|
|
*
|
|
* @code
|
|
* SuperCoolWidget *widget = new SuperCoolWidget();
|
|
* dataEngine("engine")->connectSource(item->config("dataSourceName"), widget);
|
|
* item->setWidget(widget);
|
|
* @endcode
|
|
*
|
|
* You can also add one or more custom qactions to this extender item in this function.
|
|
*
|
|
* Note that by default, not all ExtenderItems are persistent. Only items that are detached,
|
|
* will have their configuration stored when plasma exits.
|
|
*/
|
|
virtual void initExtenderItem(ExtenderItem *item);
|
|
|
|
/**
|
|
* @param parent the QGraphicsItem this applet is parented to
|
|
* @param serviceId the name of the .desktop file containing the
|
|
* information about the widget
|
|
* @param appletId a unique id used to differentiate between multiple
|
|
* instances of the same Applet type
|
|
*/
|
|
explicit Applet(QGraphicsItem *parent = 0,
|
|
const QString &serviceId = QString(),
|
|
uint appletId = 0);
|
|
|
|
/**
|
|
* @param parent the QGraphicsItem this applet is parented to
|
|
* @param info the plugin information object for this Applet
|
|
* @param appletId a unique id used to differentiate between multiple
|
|
* instances of the same Applet type
|
|
* @since 4.6
|
|
*/
|
|
explicit Applet(const KPluginInfo &info, QGraphicsItem *parent = 0, uint appletId = 0);
|
|
|
|
/**
|
|
* @param parent the QGraphicsItem this applet is parented to
|
|
* @param serviceId the name of the .desktop file containing the
|
|
* information about the widget
|
|
* @param appletId a unique id used to differentiate between multiple
|
|
* instances of the same Applet type
|
|
* @param args a list of strings containing two entries: the service id
|
|
* and the applet id
|
|
* @since 4.3
|
|
*/
|
|
explicit Applet(QGraphicsItem *parent,
|
|
const QString &serviceId,
|
|
uint appletId,
|
|
const QVariantList &args);
|
|
|
|
|
|
/**
|
|
* @return true if destroy() was called; useful for Applets which should avoid
|
|
* certain tasks if they are about to be deleted permanently
|
|
*/
|
|
bool destroyed() const;
|
|
|
|
/**
|
|
* Reimplement this method so provide a configuration interface,
|
|
* parented to the supplied widget. Ownership of the widgets is passed
|
|
* to the parent widget.
|
|
*
|
|
* Typically one would add custom pages to the config dialog @p parent
|
|
* and then connect to the applyClicked() and okClicked() signals
|
|
* or @p parent to react on config changes:
|
|
*
|
|
* @code
|
|
* connect(parent, SIGNAL(applyClicked()), this, SLOT(myConfigAccepted()));
|
|
* connect(parent, SIGNAL(okClicked()), this, SLOT(myConfigAccepted()));
|
|
* @endcode
|
|
*
|
|
* With this approach it makes sense to store the custom pages in member
|
|
* variables to make their fields accessible from the myConfigAccepted()
|
|
* slot.
|
|
*
|
|
* Use config() to store your configuration.
|
|
*
|
|
* @param parent the dialog which is the parent of the configuration
|
|
* widgets
|
|
*/
|
|
virtual void createConfigurationInterface(KConfigDialog *parent);
|
|
|
|
/**
|
|
* Returns true if the applet is allowed to perform functions covered by the given constraint
|
|
* eg. hasAuthorization("FileDialog") returns true if applets are allowed to show filedialogs.
|
|
* @since 4.3
|
|
*/
|
|
bool hasAuthorization(const QString &constraint) const;
|
|
|
|
/**
|
|
* Sets an application associated to this applet, that will be
|
|
* regarded as a full view of what is represented in the applet
|
|
*
|
|
* @param string the name of the application. it can be
|
|
* \li a name understood by KService::serviceByDesktopName
|
|
* (e.g. "konqueror")
|
|
* \li a command in $PATH
|
|
* \li or an absolute path to an executable
|
|
* @since 4.4
|
|
*/
|
|
void setAssociatedApplication(const QString &string);
|
|
|
|
/**
|
|
* Sets a list of urls associated to this application,
|
|
* they will be used as parameters for the associated application
|
|
* @see setAssociatedApplication()
|
|
*
|
|
* @param urls
|
|
*/
|
|
void setAssociatedApplicationUrls(const KUrl::List &urls);
|
|
|
|
/**
|
|
* @return the application associated to this applet
|
|
* @since 4.4
|
|
*/
|
|
QString associatedApplication() const;
|
|
|
|
/**
|
|
* @return the urls associated to this applet
|
|
* @since 4.4
|
|
*/
|
|
KUrl::List associatedApplicationUrls() const;
|
|
|
|
/**
|
|
* @return true if the applet has a valid associated application or urls
|
|
* @since 4.4
|
|
*/
|
|
bool hasValidAssociatedApplication() const;
|
|
|
|
Q_SIGNALS:
|
|
/**
|
|
* This signal indicates that an application launch, window
|
|
* creation or window focus event was triggered. This is used, for instance,
|
|
* to ensure that the Dashboard view in Plasma Desktop hides when such an event is
|
|
* triggered by an item it is displaying.
|
|
*/
|
|
void releaseVisualFocus();
|
|
|
|
#if QT_VERSION >= 0x040700
|
|
protected:
|
|
void geometryChanged(); // in QGraphicsWidget now; preserve BC
|
|
#else
|
|
/**
|
|
* Emitted whenever the applet makes a geometry change, so that views
|
|
* can coordinate themselves with these changes if they desire.
|
|
*/
|
|
void geometryChanged();
|
|
#endif
|
|
|
|
Q_SIGNALS:
|
|
/**
|
|
* Emitted when the user completes a transformation of the applet.
|
|
*/
|
|
void appletTransformedByUser();
|
|
|
|
/**
|
|
* Emitted when the applet changes its own geometry or transform.
|
|
*/
|
|
void appletTransformedItself();
|
|
|
|
/**
|
|
* Emitted by Applet subclasses when they change a sizeHint and wants to announce the change
|
|
*/
|
|
void sizeHintChanged(Qt::SizeHint which);
|
|
|
|
/**
|
|
* Emitted when an applet has changed values in its configuration
|
|
* and wishes for them to be saved at the next save point. As this implies
|
|
* disk activity, this signal should be used with care.
|
|
*
|
|
* @note This does not need to be emitted from saveState by individual
|
|
* applets.
|
|
*/
|
|
void configNeedsSaving();
|
|
|
|
/**
|
|
* Emitted when activation is requested due to, for example, a global
|
|
* keyboard shortcut. By default the wiget is given focus.
|
|
*/
|
|
void activate();
|
|
|
|
/**
|
|
* Emitted when the user clicked on a button of the message overlay
|
|
*
|
|
* @see showMessage
|
|
* @see Plasma::MessageButton
|
|
* @since 4.3
|
|
*/
|
|
void messageButtonPressed(const Plasma::MessageButton button);
|
|
|
|
/**
|
|
* Emitted when the applet is deleted
|
|
*/
|
|
void appletDestroyed(Plasma::Applet *applet);
|
|
|
|
/**
|
|
* Emitted when the applet status changes
|
|
* @since 4.4
|
|
*/
|
|
void newStatus(Plasma::ItemStatus status);
|
|
|
|
/**
|
|
* Emitted when an ExtenderItem in a scripting applet needs to be initialized
|
|
*/
|
|
void extenderItemRestored(Plasma::ExtenderItem *item);
|
|
|
|
/**
|
|
* Emitted when the immutability changes
|
|
* @since 4.4
|
|
*/
|
|
void immutabilityChanged(Plasma::ImmutabilityType immutable);
|
|
|
|
public Q_SLOTS:
|
|
/**
|
|
* Sets the immutability type for this applet (not immutable,
|
|
* user immutable or system immutable)
|
|
* @arg immutable the new immutability type of this applet
|
|
*/
|
|
void setImmutability(const ImmutabilityType immutable);
|
|
|
|
/**
|
|
* Destroys the applet; it will be removed nicely and deleted.
|
|
* Its configuration will also be deleted.
|
|
*/
|
|
virtual void destroy();
|
|
|
|
/**
|
|
* Lets the user interact with the plasmoid options.
|
|
* Called when the user selects the configure entry
|
|
* from the context menu.
|
|
*
|
|
* Unless there is good reason for overriding this method,
|
|
* Applet subclasses should actually override createConfigurationInterface
|
|
* instead. A good example of when this isn't plausible is
|
|
* when using a dialog prepared by another library, such
|
|
* as KPropertiesDialog from libkfile.
|
|
* You probably want to call showConfigurationInterface(QWidget*)
|
|
* with the custom widget you created to actually show your interface
|
|
*/
|
|
virtual void showConfigurationInterface();
|
|
|
|
/**
|
|
* Actually show your custom configuration interface
|
|
* Use this only if you reimplemented showConfigurationInterface()
|
|
*
|
|
* @arg widget the widget representing your configuration interface
|
|
*
|
|
* @since 4.5
|
|
*/
|
|
void showConfigurationInterface(QWidget *widget);
|
|
|
|
/**
|
|
* @return true when the configuration interface is being shown
|
|
* @since 4.5
|
|
*/
|
|
bool isUserConfiguring() const;
|
|
|
|
/**
|
|
* Causes this applet to raise above all other applets.
|
|
*/
|
|
void raise();
|
|
|
|
/**
|
|
* Causes this applet to lower below all the other applets.
|
|
*/
|
|
void lower();
|
|
|
|
/**
|
|
* Sends all pending contraints updates to the applet. Will usually
|
|
* be called automatically, but can also be called manually if needed.
|
|
*/
|
|
void flushPendingConstraintsEvents();
|
|
|
|
/**
|
|
* This method is called once the applet is loaded and added to a Corona.
|
|
* If the applet requires a QGraphicsScene or has an particularly intensive
|
|
* set of initialization routines to go through, consider implementing it
|
|
* in this method instead of the constructor.
|
|
*
|
|
* Note: paintInterface may get called before init() depending on initialization
|
|
* order. Painting is managed by the canvas (QGraphisScene), and may schedule a
|
|
* paint event prior to init() being called.
|
|
**/
|
|
virtual void init();
|
|
|
|
/**
|
|
* Called when applet configuration values have changed.
|
|
*/
|
|
virtual void configChanged();
|
|
|
|
/**
|
|
* Shows a busy indicator that overlays the applet
|
|
* @param busy show or hide the busy indicator
|
|
*/
|
|
void setBusy(bool busy);
|
|
|
|
/**
|
|
* @return the list of arguments which the applet was called with
|
|
* @since KDE4.3
|
|
*/
|
|
QVariantList startupArguments() const;
|
|
|
|
/**
|
|
* @return the status of the applet
|
|
* @since 4.4
|
|
*/
|
|
ItemStatus status() const;
|
|
|
|
/**
|
|
* sets the status for this applet
|
|
* @since 4.4
|
|
*/
|
|
void setStatus(const ItemStatus stat);
|
|
|
|
/**
|
|
* Publishes and optionally announces this applet on the network for remote access.
|
|
* @param methods the methods to use for announcing this applet.
|
|
* @param resourceName the name under which this applet will be published (has to be unique
|
|
* for each machine)
|
|
*/
|
|
void publish(Plasma::AnnouncementMethods methods, const QString &resourceName);
|
|
|
|
void unpublish();
|
|
|
|
bool isPublished() const;
|
|
|
|
/**
|
|
* Open the application associated to this applet, if it's not set
|
|
* but some urls are, open those urls with the proper application
|
|
* for their mimetype
|
|
* @see setAssociatedApplication()
|
|
* @see setAssociatedApplicationUrls()
|
|
* @since 4.4
|
|
*/
|
|
void runAssociatedApplication();
|
|
|
|
protected:
|
|
/**
|
|
* This constructor is to be used with the plugin loading systems
|
|
* found in KPluginInfo and KService. The argument list is expected
|
|
* to have two elements: the KService service ID for the desktop entry
|
|
* and an applet ID which must be a base 10 number.
|
|
*
|
|
* @param parent a QObject parent; you probably want to pass in 0
|
|
* @param args a list of strings containing two entries: the service id
|
|
* and the applet id
|
|
*/
|
|
Applet(QObject *parent, const QVariantList &args);
|
|
|
|
/**
|
|
* Call this method when the applet fails to launch properly. An
|
|
* optional reason can be provided.
|
|
*
|
|
* Not that all children items will be deleted when this method is
|
|
* called. If you have pointers to these items, you will need to
|
|
* reset them after calling this method.
|
|
*
|
|
* @param failed true when the applet failed, false when it succeeded
|
|
* @param reason an optional reason to show the user why the applet
|
|
* failed to launch
|
|
**/
|
|
void setFailedToLaunch(bool failed, const QString &reason = QString());
|
|
|
|
/**
|
|
* When called, the Applet should write any information needed as part
|
|
* of the Applet's running state to the configuration object in config()
|
|
* and/or globalConfig().
|
|
*
|
|
* Applets that always sync their settings/state with the config
|
|
* objects when these settings/states change do not need to reimplement
|
|
* this method.
|
|
**/
|
|
virtual void saveState(KConfigGroup &config) const;
|
|
|
|
/**
|
|
* Sets whether or not this applet provides a user interface for
|
|
* configuring the applet.
|
|
*
|
|
* It defaults to false, and if true is passed in you should
|
|
* also reimplement createConfigurationInterface()
|
|
*
|
|
* @param hasInterface whether or not there is a user interface available
|
|
**/
|
|
void setHasConfigurationInterface(bool hasInterface);
|
|
|
|
/**
|
|
* When the applet needs to be configured before being usable, this
|
|
* method can be called to show a standard interface prompting the user
|
|
* to configure the applet
|
|
*
|
|
* @param needsConfiguring true if the applet needs to be configured,
|
|
* or false if it doesn't
|
|
* @param reason a translated message for the user explaining that the
|
|
* applet needs configuring; this should note what needs
|
|
* to be configured
|
|
*/
|
|
void setConfigurationRequired(bool needsConfiguring, const QString &reason = QString());
|
|
|
|
/**
|
|
* Shows a message as an overlay of the applet: the message has an
|
|
* icon, text and (optional) buttons
|
|
*
|
|
* @param icon the icon that will be shown
|
|
* @param message the message string that will be shown.
|
|
* If the message is empty nothng will be shown
|
|
* and if there was a message already it will be hidden
|
|
* @param buttons an OR combination of all the buttons needed
|
|
*
|
|
* @see Plasma::MessageButtons
|
|
* @see messageButtonPressed
|
|
* @since 4.3
|
|
*/
|
|
void showMessage(const QIcon &icon, const QString &message, const Plasma::MessageButtons buttons);
|
|
|
|
/**
|
|
* Called when any of the geometry constraints have been updated.
|
|
*
|
|
* This is always called prior to painting and should be used as an
|
|
* opportunity to layout the widget, calculate sizings, etc.
|
|
*
|
|
* Do not call update() from this method; an update() will be triggered
|
|
* at the appropriate time for the applet.
|
|
*
|
|
* @param constraints the type of constraints that were updated
|
|
* @property constraint
|
|
*/
|
|
virtual void constraintsEvent(Plasma::Constraints constraints);
|
|
|
|
/**
|
|
* Register the widgets that manage mouse clicks but you still want
|
|
* to be able to drag the applet around when holding the mouse pointer
|
|
* on that widget.
|
|
*
|
|
* Calling this results in an eventFilter being places on the widget.
|
|
*
|
|
* @param item the item to watch for mouse move
|
|
*/
|
|
void registerAsDragHandle(QGraphicsItem *item);
|
|
|
|
/**
|
|
* Unregister a widget registered with registerAsDragHandle.
|
|
*
|
|
* @param item the item to unregister
|
|
*/
|
|
void unregisterAsDragHandle(QGraphicsItem *item);
|
|
|
|
/**
|
|
* @param item the item to look for if it is registered or not
|
|
* @return true if it is registered, false otherwise
|
|
*/
|
|
bool isRegisteredAsDragHandle(QGraphicsItem *item);
|
|
|
|
/**
|
|
* @return the extender of this applet.
|
|
*/
|
|
Extender *extender() const;
|
|
|
|
/**
|
|
* @internal event filter; used for focus watching
|
|
**/
|
|
bool eventFilter(QObject *o, QEvent *e);
|
|
|
|
/**
|
|
* @internal scene event filter; used to manage applet dragging
|
|
*/
|
|
bool sceneEventFilter (QGraphicsItem *watched, QEvent *event);
|
|
|
|
/**
|
|
* @internal manage the mouse movement to drag the applet around
|
|
*/
|
|
void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
|
|
|
|
/**
|
|
* Reimplemented from QGraphicsItem
|
|
*/
|
|
void focusInEvent(QFocusEvent *event);
|
|
|
|
/**
|
|
* Reimplemented from QGraphicsItem
|
|
*/
|
|
void resizeEvent(QGraphicsSceneResizeEvent *event);
|
|
|
|
/**
|
|
* Reimplemented from QGraphicsItem
|
|
*/
|
|
QVariant itemChange(GraphicsItemChange change, const QVariant &value);
|
|
|
|
/**
|
|
* Reimplemented from QGraphicsItem
|
|
*/
|
|
QPainterPath shape() const;
|
|
|
|
/**
|
|
* Reimplemented from QGraphicsLayoutItem
|
|
*/
|
|
QSizeF sizeHint(Qt::SizeHint which, const QSizeF & constraint = QSizeF()) const;
|
|
|
|
/**
|
|
* Reimplemented from QGraphicsLayoutItem
|
|
*/
|
|
void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
|
|
|
|
/**
|
|
* Reimplemented from QGraphicsLayoutItem
|
|
*/
|
|
void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
|
|
|
|
/**
|
|
* Reimplemented from QObject
|
|
*/
|
|
void timerEvent (QTimerEvent *event);
|
|
|
|
|
|
private:
|
|
/**
|
|
* @internal This constructor is to be used with the Package loading system.
|
|
*
|
|
* @param parent a QObject parent; you probably want to pass in 0
|
|
* @param args a list of strings containing two entries: the service id
|
|
* and the applet id
|
|
* @since 4.3
|
|
*/
|
|
Applet(const QString &packagePath, uint appletId, const QVariantList &args);
|
|
|
|
Q_PRIVATE_SLOT(d, void setFocus())
|
|
Q_PRIVATE_SLOT(d, void themeChanged())
|
|
Q_PRIVATE_SLOT(d, void cleanUpAndDelete())
|
|
Q_PRIVATE_SLOT(d, void selectItemToDestroy())
|
|
Q_PRIVATE_SLOT(d, void updateRect(const QRectF& rect))
|
|
Q_PRIVATE_SLOT(d, void destroyMessageOverlay())
|
|
Q_PRIVATE_SLOT(d, void clearShortcutEditorPtr())
|
|
Q_PRIVATE_SLOT(d, void configDialogFinished())
|
|
Q_PRIVATE_SLOT(d, void updateShortcuts())
|
|
Q_PRIVATE_SLOT(d, void publishCheckboxStateChanged(int state))
|
|
Q_PRIVATE_SLOT(d, void globalShortcutChanged())
|
|
Q_PRIVATE_SLOT(d, void propagateConfigChanged())
|
|
|
|
/**
|
|
* Reimplemented from QGraphicsItem
|
|
**/
|
|
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
|
|
|
|
AppletPrivate *const d;
|
|
|
|
//Corona needs to access setFailedToLaunch and init
|
|
friend class Corona;
|
|
friend class CoronaPrivate;
|
|
friend class Containment;
|
|
friend class ContainmentPrivate;
|
|
friend class AppletScript;
|
|
friend class AppletHandle;
|
|
friend class AppletPrivate;
|
|
friend class AccessAppletJobPrivate;
|
|
friend class PluginLoader;
|
|
friend class PopupApplet;
|
|
friend class PopupAppletPrivate;
|
|
friend class AssociatedApplicationManager;
|
|
|
|
friend class Extender;
|
|
friend class ExtenderGroup;
|
|
friend class ExtenderGroupPrivate;
|
|
friend class ExtenderPrivate;
|
|
friend class ExtenderItem;
|
|
};
|
|
|
|
} // Plasma namespace
|
|
|
|
Q_DECLARE_OPERATORS_FOR_FLAGS(Plasma::Applet::BackgroundHints)
|
|
|
|
/**
|
|
* Register an applet when it is contained in a loadable module
|
|
*/
|
|
#define K_EXPORT_PLASMA_APPLET(libname, classname) \
|
|
K_PLUGIN_FACTORY(factory, registerPlugin<classname>();) \
|
|
K_EXPORT_PLUGIN(factory("plasma_applet_" #libname)) \
|
|
K_EXPORT_PLUGIN_VERSION(PLASMA_VERSION)
|
|
|
|
#endif // multiple inclusion guard
|