436 lines
17 KiB
C++
436 lines
17 KiB
C++
/*
|
|
* Copyright 2010 by Ryan Rix <ry@n.rix.si>
|
|
*
|
|
* 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 PLUGIN_LOADER_H
|
|
#define PLUGIN_LOADER_H
|
|
|
|
#include <plasma/package.h>
|
|
#include <plasma/plasma.h>
|
|
#include <kplugininfo.h>
|
|
|
|
namespace Plasma {
|
|
|
|
class AbstractRunner;
|
|
class Applet;
|
|
class Containment;
|
|
class ContainmentActions;
|
|
class DataEngine;
|
|
class Service;
|
|
|
|
class PluginLoaderPrivate;
|
|
|
|
//TODO:
|
|
// * add loadWallpaper
|
|
// * add KPluginInfo listing support for Containments (already loaded via the applet loading code)
|
|
|
|
/**
|
|
* This is an abstract base class which defines an interface to which Plasma's
|
|
* Applet Loading logic can communicate with a parent application. The plugin loader
|
|
* must be set before any plugins are loaded, otherwise (for safety reasons), the
|
|
* default PluginLoader implementation will be used. The reimplemented version should
|
|
* not do more than simply returning a loaded plugin. It should not init() it, and it should not
|
|
* hang on to it. The associated methods will be called only when a component of Plasma
|
|
* needs to load a _new_ plugin. (e.g. DataEngine does its own caching).
|
|
*
|
|
* @author Ryan Rix <ry@n.rix.si>
|
|
* @since 4.6
|
|
**/
|
|
class PLASMA_EXPORT PluginLoader
|
|
{
|
|
public:
|
|
/**
|
|
* Load an Applet plugin.
|
|
*
|
|
* @param name the plugin name, as returned by KPluginInfo::pluginName()
|
|
* @param appletId unique ID to assign the applet, or zero to have one
|
|
* assigned automatically.
|
|
* @param args to send the applet extra arguments
|
|
* @return a pointer to the loaded applet, or 0 on load failure
|
|
**/
|
|
Applet *loadApplet(const QString &name, uint appletId = 0,
|
|
const QVariantList &args = QVariantList());
|
|
|
|
/**
|
|
* Load a DataEngine plugin.
|
|
*
|
|
* @param name the name of the engine
|
|
* @return the DataEngine that was loaded, or the NullEngine on failure.
|
|
**/
|
|
DataEngine *loadDataEngine(const QString &name);
|
|
|
|
/**
|
|
* Load a Runner plugin
|
|
*
|
|
* @return the Runner that was loaded, or 0 on failure.
|
|
*/
|
|
AbstractRunner *loadRunner(const QString &name);
|
|
|
|
/**
|
|
* Load a Service plugin.
|
|
*
|
|
* @param name the plugin name of the service to load
|
|
* @param args a list of arguments to supply to the service plugin when loading it
|
|
* @param parent the parent object, if any, for the service
|
|
*
|
|
* @return a Service object, unlike Plasma::Service::loadService, this can return null.
|
|
**/
|
|
Service *loadService(const QString &name, const QVariantList &args, QObject *parent = 0);
|
|
|
|
/**
|
|
* Load a ContainmentActions plugin.
|
|
*
|
|
* Returns a pointer to the containmentactions if successful.
|
|
* The caller takes responsibility for the containmentactions, including
|
|
* deleting it when no longer needed.
|
|
*
|
|
* @param parent the parent containment. @since 4.6 null is allowed.
|
|
* @param name the plugin name, as returned by KPluginInfo::pluginName()
|
|
* @param args to send the containmentactions extra arguments
|
|
* @return a ContaimentActions object
|
|
**/
|
|
ContainmentActions *loadContainmentActions(Containment *parent, const QString &containmentActionsName,
|
|
const QVariantList &args = QVariantList());
|
|
|
|
/**
|
|
* Load a Package plugin.
|
|
*
|
|
* @param name the plugin name of the package to load
|
|
* @param specialization used to find script extensions for the given format, e.g. "QML" for "Plasma/Applet"
|
|
*
|
|
* @return a Package object matching name, or an invalid package on failure
|
|
**/
|
|
Package loadPackage(const QString &packageFormat, const QString &specialization = QString());
|
|
|
|
/**
|
|
* Returns a list of all known applets.
|
|
* This may skip applets based on security settings and ExcludeCategories in the application's config.
|
|
*
|
|
* @param category Only applets matchin this category will be returned.
|
|
* Useful in conjunction with knownCategories.
|
|
* If "Misc" is passed in, then applets without a
|
|
* Categories= entry are also returned.
|
|
* If an empty string is passed in, all applets are
|
|
* returned.
|
|
* @param parentApp the application to filter applets on. Uses the
|
|
* X-KDE-ParentApp entry (if any) in the plugin info.
|
|
* The default value of QString() will result in a
|
|
* list containing only applets not specifically
|
|
* registered to an application.
|
|
* @return list of applets
|
|
**/
|
|
KPluginInfo::List listAppletInfo(const QString &category, const QString &parentApp = QString());
|
|
|
|
/**
|
|
* Returns a list of all known applets associated with a certain mimetype.
|
|
*
|
|
* @return list of applets
|
|
**/
|
|
KPluginInfo::List listAppletInfoForMimeType(const QString &mimetype);
|
|
|
|
/**
|
|
* Returns a list of all known applets associated with a certain URL.
|
|
*
|
|
* @return list of applets
|
|
**/
|
|
KPluginInfo::List listAppletInfoForUrl(const QUrl &url);
|
|
|
|
/**
|
|
* Returns a list of all the categories used by installed applets.
|
|
*
|
|
* @param parentApp the application to filter applets on. Uses the
|
|
* X-KDE-ParentApp entry (if any) in the plugin info.
|
|
* The default value of QString() will result in a
|
|
* list containing only applets not specifically
|
|
* registered to an application.
|
|
* @return list of categories
|
|
* @param visibleOnly true if it should only return applets that are marked as visible
|
|
*/
|
|
QStringList listAppletCategories(const QString &parentApp = QString(),
|
|
bool visibleOnly = true);
|
|
|
|
/**
|
|
* Sets the list of custom categories that are used in addition to the default
|
|
* set of categories known to libplasma for Applets.
|
|
* @param categories a list of categories
|
|
* @since 4.3
|
|
*/
|
|
void setCustomAppletCategories(const QStringList &categories);
|
|
|
|
/**
|
|
* @return the list of custom categories known to libplasma
|
|
* @since 4.3
|
|
*/
|
|
QStringList customAppletCategories() const;
|
|
|
|
/**
|
|
* Get the category of the given applet
|
|
*
|
|
* @param appletName the name of the applet
|
|
*/
|
|
QString appletCategory(const QString &appletName);
|
|
|
|
/**
|
|
* Returns a list of all known DataEngines.
|
|
*
|
|
* @param parentApp the application to filter applets on. Uses the
|
|
* X-KDE-ParentApp entry (if any) in the plugin info.
|
|
* The default value of QString() will result in a
|
|
* list containing only applets not specifically
|
|
* registered to an application.
|
|
* @return list of DataEngines
|
|
**/
|
|
KPluginInfo::List listDataEngineInfo(const QString &parentApp = QString());
|
|
|
|
/**
|
|
* Returns a list of all known Runner implementations
|
|
*
|
|
* @param parentApp the application to filter applets on. Uses the
|
|
* X-KDE-ParentApp entry (if any) in the plugin info.
|
|
* The default value of QString() will result in a
|
|
* list containing only applets not specifically
|
|
* registered to an application.
|
|
* @return list of AbstractRunners
|
|
**/
|
|
KPluginInfo::List listRunnerInfo(const QString &parentApp = QString());
|
|
|
|
/**
|
|
* Returns a list of all known ContainmentActions.
|
|
*
|
|
* @param parentApp the application to filter applets on. Uses the
|
|
* X-KDE-ParentApp entry (if any) in the plugin info.
|
|
* The default value of QString() will result in a
|
|
* list containing only applets not specifically
|
|
* registered to an application.
|
|
* @return list of applets
|
|
**/
|
|
KPluginInfo::List listContainmentActionsInfo(const QString &parentApp);
|
|
|
|
/**
|
|
* Set the plugin loader which will be queried for all loads.
|
|
*
|
|
* @param loader A subclass of PluginLoader which will be supplied
|
|
* by the application
|
|
**/
|
|
static void setPluginLoader(PluginLoader* loader);
|
|
|
|
/**
|
|
* Return the active plugin loader
|
|
**/
|
|
static PluginLoader *self();
|
|
|
|
protected:
|
|
/**
|
|
* A re-implementable method that allows subclasses to override
|
|
* the default behaviour of loadApplet. If the applet requested is not recognized,
|
|
* then the implementation should return a NULL pointer. This method is called
|
|
* by loadApplet prior to attempting to load an applet using the standard Plasma
|
|
* plugin mechanisms.
|
|
*
|
|
* @param name the plugin name, as returned by KPluginInfo::pluginName()
|
|
* @param appletId unique ID to assign the applet, or zero to have one
|
|
* assigned automatically.
|
|
* @param args to send the applet extra arguments
|
|
* @return a pointer to the loaded applet, or 0 on load failure
|
|
**/
|
|
virtual Applet *internalLoadApplet(const QString &name, uint appletId = 0,
|
|
const QVariantList &args = QVariantList());
|
|
|
|
/**
|
|
* A re-implementable method that allows subclasses to override
|
|
* the default behaviour of loadRunner. If the runner requested is not recognized,
|
|
* then the implementation should return a NULL pointer. This method is called
|
|
* by loadRunner prior to attempting to load a DataEgine using the standard Plasma
|
|
* plugin mechanisms.
|
|
*
|
|
* @param name the name of the engine
|
|
* @return the data engine that was loaded, or the NullEngine on failure.
|
|
**/
|
|
virtual AbstractRunner *internalLoadRunner(const QString &name);
|
|
|
|
/**
|
|
* A re-implementable method that allows subclasses to override
|
|
* the default behaviour of loadDataEngine. If the engine requested is not recognized,
|
|
* then the implementation should return a NULL pointer. This method is called
|
|
* by loadDataEngine prior to attempting to load a DataEgine using the standard Plasma
|
|
* plugin mechanisms.
|
|
*
|
|
* @param name the name of the engine
|
|
* @return the data engine that was loaded, or the NullEngine on failure.
|
|
**/
|
|
virtual DataEngine *internalLoadDataEngine(const QString &name);
|
|
|
|
/**
|
|
* A re-implementable method that allows subclasses to override
|
|
* the default behaviour of loadService. If the service requested is not recognized,
|
|
* then the implementation should return a NULL pointer. This method is called
|
|
* by loadService prior to attempting to load a Service using the standard Plasma
|
|
* plugin mechanisms.
|
|
*
|
|
* @param name the plugin name of the service to load
|
|
* @param args a list of arguments to supply to the service plugin when loading it
|
|
* @param parent the parent object, if any, for the service
|
|
*
|
|
* @return a Service object, unlike Plasma::Service::loadService, this can return null.
|
|
**/
|
|
virtual Service *internalLoadService(const QString &name, const QVariantList &args, QObject *parent = 0);
|
|
|
|
/**
|
|
* A re-implementable method that allows subclasses to override
|
|
* the default behaviour of loadContainmentActions. If the Containments Action requested is not recognized,
|
|
* then the implementation should return a NULL pointer. This method is called
|
|
* by loadService prior to attempting to load a Service using the standard Plasma
|
|
* plugin mechanisms.
|
|
*
|
|
* Returns a pointer to the containmentactions if successful.
|
|
* The caller takes responsibility for the containmentactions, including
|
|
* deleting it when no longer needed.
|
|
*
|
|
* @param parent the parent containment. @since 4.6 null is allowed.
|
|
* @param name the plugin name, as returned by KPluginInfo::pluginName()
|
|
* @param args to send the containmentactions extra arguments
|
|
* @return a ContaimentActions object
|
|
**/
|
|
virtual ContainmentActions *internalLoadContainmentActions(Containment *parent, const QString &containmentActionsName, const QVariantList &args);
|
|
|
|
/**
|
|
* A re-implementable method that allows subclasses to override
|
|
* the default behaviour of loadPackage. If the service requested is not recognized,
|
|
* then the implementation should return a NULL pointer. This method is called
|
|
* by loadService prior to attempting to load a Service using the standard Plasma
|
|
* plugin mechanisms.
|
|
*
|
|
* @param name the plugin name of the service to load
|
|
* @param args a list of arguments to supply to the service plugin when loading it
|
|
* @param parent the parent object, if any, for the service
|
|
*
|
|
* @return a Service object, unlike Plasma::Service::loadService, this can return null.
|
|
**/
|
|
virtual Package internalLoadPackage(const QString &name, const QString &specialization);
|
|
|
|
/**
|
|
* A re-implementable method that allows subclasses to provide additional applets
|
|
* for listAppletInfo. If the application has no applets to give to the application,
|
|
* then the implementation should return an empty list.
|
|
*
|
|
* This method is called by listAppletInfo prior to generating the list of applets installed
|
|
* on the system using the standard Plasma plugin mechanisms, and will try to find .desktop
|
|
* files for your applets.
|
|
*
|
|
* @param category Only applets matching this category will be returned.
|
|
* Useful in conjunction with knownCategories.
|
|
* If "Misc" is passed in, then applets without a
|
|
* Categories= entry are also returned.
|
|
* If an empty string is passed in, all applets are
|
|
* returned.
|
|
* @return list of applets
|
|
**/
|
|
virtual KPluginInfo::List internalAppletInfo(const QString &category) const;
|
|
|
|
/**
|
|
* A re-implementable method that allows subclasses to provide additional DataEngines
|
|
* for DataEngine::listDataEngines.
|
|
*
|
|
* @return list of DataEngines info, or an empty list if none
|
|
**/
|
|
virtual KPluginInfo::List internalDataEngineInfo() const;
|
|
|
|
/**
|
|
* Returns a list of all known Runner implementations
|
|
*
|
|
* @return list of AbstractRunners info, or an empty list if none
|
|
*/
|
|
virtual KPluginInfo::List internalRunnerInfo() const;
|
|
|
|
/**
|
|
* Returns a list of all known Runner implementations
|
|
*
|
|
* @return list of AbstractRunners info, or an empty list if none
|
|
*/
|
|
virtual KPluginInfo::List internalServiceInfo() const;
|
|
|
|
/**
|
|
* Returns a list of all known Runner implementations
|
|
*
|
|
* @return list of ContainmentActions info, or an empty list if none
|
|
*/
|
|
virtual KPluginInfo::List internalContainmentActionsInfo() const;
|
|
|
|
/**
|
|
* Standardized mechanism for providing internal Applets by install .desktop files
|
|
* in $APPPDATA/plasma/internal/applets/
|
|
*
|
|
* For applications that do this, internalAppletInfo can be implemented as a one-liner
|
|
* call to this method.
|
|
*
|
|
* @param category Only applets matching this category will be returned.
|
|
* Useful in conjunction with knownCategories.
|
|
* If "Misc" is passed in, then applets without a
|
|
* Categories= entry are also returned.
|
|
* If an empty string is passed in, all applets are
|
|
* returned.
|
|
* @return list of Applets, or an empty list if none
|
|
*/
|
|
KPluginInfo::List standardInternalAppletInfo(const QString &category) const;
|
|
|
|
/**
|
|
* Standardized mechanism for providing internal Applets by install .desktop files
|
|
* in $APPPDATA/plasma/internal/dataengines/
|
|
*
|
|
* For applications that do this, internalDataEngineInfo can be implemented as a one-liner
|
|
* call to this method.
|
|
*
|
|
* @return list of applets
|
|
*/
|
|
KPluginInfo::List standardInternalDataEngineInfo() const;
|
|
|
|
/**
|
|
* Standardized mechanism for providing internal Applets by install .desktop files
|
|
* in $APPPDATA/plasma/internal/runners/
|
|
*
|
|
* For applications that do this, internalRunnerInfo can be implemented as a one-liner
|
|
* call to this method.
|
|
*
|
|
* @return list of applets
|
|
*/
|
|
KPluginInfo::List standardInternalRunnerInfo() const;
|
|
|
|
/**
|
|
* Standardized mechanism for providing internal Applets by install .desktop files
|
|
* in $APPPDATA/plasma/internal/services/
|
|
*
|
|
* For applications that do this, internalRunnerInfo can be implemented as a one-liner
|
|
* call to this method.
|
|
*
|
|
* @return list of applets
|
|
*/
|
|
KPluginInfo::List standardInternalServiceInfo() const;
|
|
|
|
PluginLoader();
|
|
virtual ~PluginLoader();
|
|
|
|
private:
|
|
PluginLoaderPrivate * const d;
|
|
};
|
|
|
|
}
|
|
|
|
Q_DECLARE_METATYPE(Plasma::PluginLoader*)
|
|
|
|
#endif
|