plasma-framework/corona.h

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/*
* Copyright 2007 Aaron Seigo <aseigo@kde.org>
* Copyright 2007 Matt Broadstone <mbroadst@gmail.com>
* Copyright 2012 Marco MArtin <mart@kde.org>
*
* This program 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, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef PLASMA_CORONABASE_H
#define PLASMA_CORONABASE_H
#include <plasma/containment.h>
#include <plasma/plasma.h>
#include <plasma/plasma_export.h>
class QAction;
class KAction;
namespace Plasma
{
class CoronaPrivate;
class ContainmentActionsPluginsConfig;
class AbstractDialogManager;
/**
* @class CoronaBase plasma/CoronaBase.h <Plasma/CoronaBase>
*
* @short A bookkeeping Scene for Plasma::Applets
*/
class PLASMA_EXPORT Corona : public QObject
{
Q_OBJECT
//typedef QHash<QString, QList<Plasma::Applet*> > layouts;
public:
explicit Corona(QObject * parent = 0);
~Corona();
/**
* Sets the mimetype of Drag/Drop items. Default is
* text/x-plasmoidservicename
*/
void setAppletMimeType(const QString &mimetype);
/**
* The current mime type of Drag/Drop items.
*/
QString appletMimeType();
/**
* @return the default containment plugin type
* @since 4.7
*/
QString defaultContainmentPlugin() const;
/**
* @return all containments on this CoronaBase
*/
QList<Containment*> containments() const;
/**
* Clear the CoronaBase from all applets.
*/
void clearContainments();
/**
* Returns the config file used to store the configuration for this CoronaBase
*/
KSharedConfig::Ptr config() const;
/**
* Adds a Containment to the CoronaBase
*
* @param name the plugin name for the containment, as given by
* KPluginInfo::pluginName(). If an empty string is passed in, the default
* containment plugin will be used (usually DesktopContainment). If the
* string literal "null" is passed in, then no plugin will be loaded and
* a simple Containment object will be created instead.
* @param args argument list to pass to the containment
*
* @return a pointer to the containment on success, or 0 on failure. Failure can be
* caused by too restrictive of an Immutability type, as containments cannot be added
* when widgets are locked, or if the requested containment plugin can not be located
* or successfully loaded.
*/
Containment *addContainment(const QString &name, const QVariantList &args = QVariantList());
/**
* Loads a containment with delayed initialization, primarily useful
* for implementations of loadDefaultLayout. The caller is responsible
* for all initializating, saving and notification of a new containment.
*
* @param name the plugin name for the containment, as given by
* KPluginInfo::pluginName(). If an empty string is passed in, the defalt
* containment plugin will be used (usually DesktopContainment). If the
* string literal "null" is passed in, then no plugin will be loaded and
* a simple Containment object will be created instead.
* @param args argument list to pass to the containment
*
* @return a pointer to the containment on success, or 0 on failure. Failure can
* be caused by the Immutability type being too restrictive, as containments can't be added
* when widgets are locked, or if the requested containment plugin can not be located
* or successfully loaded.
* @see addContainment
**/
Containment *addContainmentDelayed(const QString &name,
const QVariantList &args = QVariantList());
/**
* Returns the Containment, if any, for a given physical screen and desktop
*
* @param screen number of the physical screen to locate
* @param desktop the virtual desktop) to locate; if < 0 then it will
* simply return the first Containment associated with screen
*/
Containment *containmentForScreen(int screen, int desktop = -1) const;
/**
* Returns the Containment for a given physical screen and desktop, creating one
* if none exists
*
* @param screen number of the physical screen to locate
* @param desktop the virtual desktop) to locate; if < 0 then it will
* simply return the first Containment associated with screen
* @param defaultPluginIfNonExistent the plugin to load by default; "null" is an empty
* Containment and "default" creates the default plugin
* @param defaultArgs optional arguments to pass in when creating a Containment if needed
* @since 4.6
*/
Containment *containmentForScreen(int screen, int desktop,
const QString &defaultPluginIfNonExistent,
const QVariantList &defaultArgs = QVariantList());
/**
* Returns the number of screens available to plasma.
* Subclasses should override this method as the default
* implementation returns a meaningless value.
*/
virtual int numScreens() const;
/**
* Returns the geometry of a given screen.
* Valid screen ids are 0 to numScreen()-1, or -1 for the full desktop geometry.
* Subclasses should override this method as the default
* implementation returns a meaningless value.
*/
virtual QRect screenGeometry(int id) const;
/**
* Returns the available region for a given screen.
* The available region excludes panels and similar windows.
* Valid screen ids are 0 to numScreens()-1.
* By default this method returns a rectangular region
* equal to screenGeometry(id); subclasses that need another
* behavior should override this method.
*/
virtual QRegion availableScreenRegion(int id) const;
/**
* This method is useful in order to retrieve the list of available
* screen edges for panel type containments.
* @param screen the id of the screen to look for free edges.
* @returns a list of free edges not filled with panel type containments.
*/
QList<Plasma::Location> freeEdges(int screen) const;
/**
* Returns the QAction with the given name from our collection
*/
QAction *action(QString name) const;
/**
* Adds the action to our collection under the given name
*/
void addAction(QString name, QAction *action);
/**
* Returns all the actions in our collection
*/
QList<QAction*> actions() const;
/**
* convenience function - enables or disables an action by name
*
* @param name the name of the action in our collection
* @param enable true to enable, false to disable
*/
void enableAction(const QString &name, bool enable);
/**
* @since 4.3
* Updates keyboard shortcuts for all the CoronaBase's actions.
* If you've added actions to the CoronaBase you'll need to
* call this for them to be configurable.
*/
void updateShortcuts();
/**
* @since 4.3
* Adds a set of actions to the shortcut config dialog.
* don't use this on actions in the CoronaBase's own actioncollection,
* those are handled automatically. this is for stuff outside of that.
*/
void addShortcuts(KActionCollection *newShortcuts);
/**
* @since 4.3
* Creates an action in our collection under the given name
* @return the new action
* FIXME I'm wrapping so much of kactioncollection API now, maybe I should just expose the
* collection itself :P
*/
KAction* addAction(QString name);
/**
* @since 4.4
* Sets the default containmentactions plugins for the given containment type
*/
void setContainmentActionsDefaults(Containment::Type containmentType, const ContainmentActionsPluginsConfig &config);
/**
* @since 4.4
* Returns the default containmentactions plugins for the given containment type
*/
ContainmentActionsPluginsConfig containmentActionsDefaults(Containment::Type containmentType);
/**
* @param the AbstractDialogManager implementaion
*
* @since 4.5
*/
void setDialogManager(AbstractDialogManager *manager);
/**
* @return the AbstractDialogManager that will show dialogs used by applets, like configuration dialogs
*
* @since 4.5
*/
AbstractDialogManager *dialogManager();
/**
* Returns the name of the preferred plugin to be used as containment toolboxes.
* CustomContainments and CustomPanelContainments can still override it as their liking. It's also not guaranteed that the plugin will actually exist.
*
* @param type the containment type of which we want to know the associated toolbox plugin
* @since 4.6
*/
QString preferredToolBoxPlugin(const Containment::Type type) const;
/**
* Imports an applet layout from a config file. The results will be added to the
* current set of Containments.
*
* @param config the name of the config file to load from,
* or the default config file if QString()
* @return the list of containments that were loaded
* @since 4.6
*/
QList<Plasma::Containment *> importLayout(const KConfigGroup &config);
/**
* Exports a set of containments to a config file.
*
* @param config the config group to save to
* @param containments the list of containments to save
* @since 4.6
*/
void exportLayout(KConfigGroup &config, QList<Containment*> containments);
public Q_SLOTS:
/**
* Initializes the layout from a config file. This will first clear any existing
* Containments, load a layout from the requested configuration file, request the
* default layout if needed and update immutability.
*
* @param config the name of the config file to load from,
* or the default config file if QString()
*/
void initializeLayout(const QString &config = QString());
/**
* Load applet layout from a config file. The results will be added to the
* current set of Containments.
*
* @param config the name of the config file to load from,
* or the default config file if QString()
*/
void loadLayout(const QString &config = QString());
/**
* Save applets layout to file
* @param config the file to save to, or the default config file if QString()
*/
void saveLayout(const QString &config = QString()) const;
/**
* @return The type of immutability of this CoronaBase
*/
ImmutabilityType immutability() const;
/**
* Sets the immutability type for this CoronaBase (not immutable,
* user immutable or system immutable)
* @param immutable the new immutability type of this applet
*/
void setImmutability(const ImmutabilityType immutable);
/**
* Schedules a flush-to-disk synchronization of the configuration state
* at the next convenient moment.
*/
void requestConfigSync();
/**
* Schedules a time sensitive flush-to-disk synchronization of the
* configuration state. Since this method does not provide any sort of
* event compression, it should only be used when an *immediate* disk
* sync is *absolutely* required. Otherwise, use @see requestConfigSync()
* which does do event compression.
*/
void requireConfigSync();
Q_SIGNALS:
/**
* This signal indicates a new containment has been added to
* the CoronaBase
*/
void containmentAdded(Plasma::Containment *containment);
/**
* This signal indicates that a containment has been newly
* associated (or dissociated) with a physical screen.
*
* @param wasScreen the screen it was associated with
* @param isScreen the screen it is now associated with
* @param containment the containment switching screens
*/
void screenOwnerChanged(int wasScreen, int isScreen, Plasma::Containment *containment);
/**
* 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 hides when such an event is
* triggered by an item it is displaying.
*/
void releaseVisualFocus();
/**
* This signal indicates that the configuration file was flushed to disc.
*/
void configSynced();
/**
* This signal inicates that a change in available screen goemetry occurred.
*/
void availableScreenRegionChanged();
/**
* emitted when immutability changes.
* this is for use by things that don't get contraints events, like plasmaapp.
* it's NOT for containments or applets or any of the other stuff on the scene.
* if your code's not in shells/ it probably shouldn't be using it.
*/
void immutabilityChanged(Plasma::ImmutabilityType immutability);
/**
* @since 4.3
* emitted when the user changes keyboard shortcut settings
* connect to this if you've put some extra shortcuts in your app
* that are NOT in CoronaBase's actioncollection.
* if your code's not in shells/ it probably shouldn't be using this function.
* @see addShortcuts
*/
void shortcutsChanged();
protected:
/**
* Loads the default (system wide) layout for this user
**/
virtual void loadDefaultLayout();
/**
* @return The preferred toolbox plugin name for a given containment type.
* @param type the containment type of which we want to know the preferred toolbox plugin.
* @param plugin the toolbox plugin name
* @since 4.6
*/
void setPreferredToolBoxPlugin(const Containment::Type type, const QString &plugin);
/**
* Sets the default containment plugin to try and load
* @since 4.7
*/
void setDefaultContainmentPlugin(const QString &name);
private:
CoronaPrivate *const d;
Q_PRIVATE_SLOT(d, void containmentDestroyed(QObject*))
Q_PRIVATE_SLOT(d, void syncConfig())
Q_PRIVATE_SLOT(d, void toggleImmutability())
Q_PRIVATE_SLOT(d, void showShortcutConfig())
friend class CoronaPrivate;
friend class View;
};
} // namespace Plasma
#endif