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+/* This file is part of the KDE project
+   Copyright (C) 2004 Alexander Dymo <adymo@kdevelop.org>
+
+   This library 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 of the License, or (at your option) any later version.
+
+   This library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+*/
+#ifndef KDEVPLUGINCONTROLLER_H
+#define KDEVPLUGINCONTROLLER_H
+
+#include <qobject.h>
+
+#include <kurl.h>
+#include <ktrader.h>
+
+/**
+@file kdevplugincontroller.h
+KDevelop plugin controller interface.
+*/
+
+class KDevPlugin;
+class ProfileEngine;
+
+/**
+The base class for KDevelop plugin controller.
+Plugin controller is responsible for quering, loading and unloading available plugins.
+*/
+class KDevPluginController: public QObject
+{
+    Q_OBJECT
+public:
+
+    /**
+     * Returns a uniquely specified plugin. If it isn't already loaded, it will be.
+     * Use with caution! See extension for parameter details.
+     */
+    virtual KDevPlugin * loadPlugin( const QString & serviceType, const QString & constraint ) = 0;
+
+    /**
+     * Unloads the plugin specified by @p plugin
+     * @param plugin The plugin desktopEntryName of the plugin to unload
+     */
+    virtual void unloadPlugin( const QString & plugin ) = 0;
+
+    /**Unloads plugins specified by @p list.
+    @param list The list of plugin names to unload. plugin name corresponds
+    to the "Name" property in plugin .desktop file.*/
+    virtual void unloadPlugins(QStringList const &list) = 0;
+
+    /**@return The list of currently loaded plugins.*/
+    virtual const QValueList<KDevPlugin*> loadedPlugins() = 0;
+
+    /**Queries for the plugin which supports given service type.
+    All already loaded plugins will be queried and the first one to support the service type
+    will be returned. Any plugin can be an extension, only "ServiceTypes=..." entry is
+    required in .desktop file for that plugin.
+    @param serviceType The service type of an extension (like "KDevelop/SourceFormatter")
+    @param constraint The constraint which is applied when quering for the service. This
+    constraint is a usual KTrader constraint statement (like "[X-KDevelop-Foo]=='MyFoo'").
+    @return A KDevelop extension plugin for given service type or 0 if no plugin supports it*/
+    virtual KDevPlugin *extension(const QString &serviceType, const QString &constraint = "") = 0;
+
+    /**Queries KDevelop services. Version is checked automatically
+    by adding proper X-KDevelop-Version=N statement into the query.
+    @param serviceType The service type to query, for example "KDevelop/Plugin" or
+    "KDevelop/SourceFormatter."
+    @param constraint A constraint for the service. Do not include plugin version number - it
+    is done automatically.
+    @return The list of plugin offers.*/
+    static KTrader::OfferList query(const QString &serviceType, const QString &constraint);
+
+    /**Queries KDevelop plugins. Works like
+    KDevPluginController::query with serviceType set to "KDevelop/Plugin".
+    @param constraint A constraint for the service. Do not include plugin version number - it
+    is done automatically.
+    @return The list of plugin offers.*/
+    static KTrader::OfferList queryPlugins(const QString &constraint);
+
+    /**Reimplement this function only if your shell supports plugin profiles.
+    @return The list of URLs to the profile resources (files) with given @p extension.
+    @param nameFilter Name filter for files. @see QDir::setNameFilter documentation
+    for name filters syntax.*/
+    virtual KURL::List profileResources(const QString &nameFilter);
+
+    /**Reimplement this function only if your shell supports plugin profiles.
+    @return The list of URLs to the resources (files) with given @p extension.
+    This list is obtained by a recursive search that process given profile
+    and all it's subprofiles.
+    @param nameFilter Name filter for files. @see QDir::setNameFilter documentation
+    for name filters syntax.*/
+    virtual KURL::List profileResourcesRecursive(const QString &nameFilter);
+
+    /** @return The current Profile Engine  */
+    virtual ProfileEngine &engine() = 0;
+
+signals:
+    /**Emitted when a plugin profile was changed (reloaded, other profile opened, etc.).
+    Should work only on shells with plugin profiles support.*/
+    void profileChanged();
+
+protected:
+    /**Constructor.*/
+    KDevPluginController();
+
+};
+
+#endif