142 lines
4.3 KiB
C++
142 lines
4.3 KiB
C++
/*
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* Copyright 2007 by Aaron Seigo <aseigo@kde.org>
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*
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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_SCRIPTENGINE_H
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#define PLASMA_SCRIPTENGINE_H
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#include <plasma/plasma_export.h>
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#include <plasma/packagestructure.h>
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#include <plasma/plasma.h>
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#include <QtCore/QObject>
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#include <QtCore/QRect>
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#include <QtCore/QSizeF>
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class QPainter;
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class QStyleOptionGraphicsItem;
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namespace Plasma
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{
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class AbstractRunner;
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class Applet;
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class AppletScript;
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class DataEngine;
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class DataEngineScript;
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class RunnerScript;
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class Package;
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/**
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* @brief The base class for scripting interfaces to be used in loading
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* plasmoids of a given language.
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*
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* All ScriptEngines should export as consistent an interface as possible
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* so that the learning curve is limited. In particular, the following
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* API should be made available in the script environment:
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*
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* TODO: define the actual scripting APIas ...
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* PlasmaApplet - the applet of this plasmoid
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* LoadUserInterface(String uiFile) - loads and returns a given UI file
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* LoadImage - loads an image resource out of the plasmoid's package
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* PlasmaSvg - creates and returns an Svg file
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**/
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class PLASMA_EXPORT ScriptEngine : public QObject
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{
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Q_OBJECT
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public:
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~ScriptEngine();
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/**
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* Called when it is safe to initialize the internal state of the engine
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*/
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virtual bool init();
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protected:
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explicit ScriptEngine(QObject *parent = 0);
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/**
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* @return absolute path to the main script file for this plasmoid
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*/
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virtual QString mainScript() const;
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/**
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* @return the Package associated with this plasmoid which can
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* be used to request resources, such as images and
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* interface files.
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*/
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virtual const Package* package() const;
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private:
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class Private;
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Private * const d;
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};
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/**
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* @arg types a set of ComponentTypes flags for which to look up the
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* language support for
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* @return a list of all supported languages for the given type(s).
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**/
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QStringList knownLanguages(ComponentTypes types);
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/**
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* Loads an Applet script engine for the given language.
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*
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* @param language the language to load for
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* @param applet the Plasma::Applet for this script
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* @return pointer to the AppletScript or 0 on failure; the caller is responsible
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* for the return object which will be parented to the Applet
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**/
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AppletScript* loadScriptEngine(const QString &language, Applet *applet);
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/**
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* Loads an DataEngine script engine for the given language.
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*
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* @param language the language to load for
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* @param dataEngine the Plasma::DataEngine for this script;
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* @return pointer to the DataEngineScript or 0 on failure; the caller is responsible
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* for the return object which will be parented to the DataEngine
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**/
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DataEngineScript* loadScriptEngine(const QString &language, DataEngine *dataEngine);
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/**
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* Loads an Applet script engine for the given language.
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*
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* @param language the language to load for
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* @param runner the Plasma::AbstractRunner for this script
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* @return pointer to the RunnerScript or 0 on failure; the caller is responsible
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* for the return object which will be parented to the AbstractRunner
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**/
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RunnerScript* loadScriptEngine(const QString &language, AbstractRunner *runner);
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/**
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* Loads an appropriate PackageStructure for the given language and type
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*
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* @param langauge the language to load the PackageStructure for
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* @param type the component type
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* @return a guarded PackageStructure pointer
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*/
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PackageStructure::Ptr packageStructure(const QString &language, ComponentType type);
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} // namespace Plasma
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#endif
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