Added stdinstance plugin and a ton of plugin stuff.

3 files changed, 208 insertions, 0 deletions

diff --git a/data/plugin/instancetypeplugin.h b/data/plugin/instancetypeplugin.h
new file mode 100644
index 00000000..8e3febdb
--- /dev/null
+++ b/data/plugin/instancetypeplugin.h
@@ -0,0 +1,41 @@
+/* Copyright 2013 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef INSTANCETYPEPLUGIN_H
+#define INSTANCETYPEPLUGIN_H
+
+#include <QList>
+
+#include "data/inst/instancetype.h"
+
+/*!
+ * \brief Interface for plugins that want to provide custom instance types.
+ */
+class InstanceTypePlugin
+{
+public:
+	/*!
+	 * \brief Gets a QList containing the instance types that this plugin provides.
+	 * These instance types are then registered with the InstanceLoader.
+	 * The InstanceType objects should \e not be deleted by the plugin. Once they 
+	 * are registered, they belong to the InstanceLoader.
+	 * \return A QList containing this plugin's instance types.
+	 */
+	virtual QList<InstanceType *> getInstanceTypes() = 0;
+};
+
+Q_DECLARE_INTERFACE(InstanceTypePlugin, "net.forkk.MultiMC.InstanceTypePlugin/0.1")
+
+#endif // INSTANCETYPEPLUGIN_H
diff --git a/data/plugin/pluginmanager.cpp b/data/plugin/pluginmanager.cpp
new file mode 100644
index 00000000..cd33b285
--- /dev/null
+++ b/data/plugin/pluginmanager.cpp
@@ -0,0 +1,96 @@
+/* Copyright 2013 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "pluginmanager.h"
+
+#include <QDir>
+#include <QDirIterator>
+#include <QFileInfo>
+
+#include <QtPlugin>
+
+#include "data/plugin/instancetypeplugin.h"
+
+PluginManager PluginManager::manager;
+
+PluginManager::PluginManager() :
+	QObject(NULL)
+{
+	
+}
+
+bool PluginManager::loadPlugins(QString pluginDir)
+{
+	m_plugins.clear();
+	
+	QDir dir(pluginDir);
+	QDirIterator iter(dir);
+	
+	while (iter.hasNext())
+	{
+		QFileInfo pluginFile(dir.absoluteFilePath(iter.next()));
+		
+		if (pluginFile.exists() && pluginFile.isFile())
+		{
+			QPluginLoader pluginLoader(pluginFile.absoluteFilePath());
+			pluginLoader.load();
+			QObject *plugin = pluginLoader.instance();
+			if (plugin)
+			{
+				qDebug(QString("Loaded plugin %1.").
+					   arg(pluginFile.baseName()).toUtf8());
+				m_plugins.push_back(plugin);
+			}
+			else
+			{
+				qWarning(QString("Error loading plugin %1. Not a valid plugin.").
+						 arg(pluginFile.baseName()).toUtf8());
+			}
+		}
+	}
+	
+	return true;
+}
+
+bool PluginManager::initInstanceTypes()
+{
+	for (int i = 0; i < m_plugins.count(); i++)
+	{
+		InstanceTypePlugin *plugin = qobject_cast<InstanceTypePlugin *>(m_plugins[i]);
+		if (plugin)
+		{
+			QList<InstanceType *> instanceTypes = plugin->getInstanceTypes();
+			
+			for (int i = 0; i < instanceTypes.count(); i++)
+			{
+				InstanceLoader::InstTypeError error = 
+						InstanceLoader::loader.registerInstanceType(instanceTypes[i]);
+				switch (error)
+				{
+				case InstanceLoader::TypeIDExists:
+					qWarning(QString("Instance type %1 already registered.").
+							 arg(instanceTypes[i]->typeID()).toUtf8());
+				}
+			}
+		}
+	}
+	
+	return true;
+}
+
+QObject *PluginManager::getPlugin(int index)
+{
+	return m_plugins[index];
+}
diff --git a/data/plugin/pluginmanager.h b/data/plugin/pluginmanager.h
new file mode 100644
index 00000000..8e2dba0d
--- /dev/null
+++ b/data/plugin/pluginmanager.h
@@ -0,0 +1,71 @@
+/* Copyright 2013 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef PLUGINMANAGER_H
+#define PLUGINMANAGER_H
+
+#include <QObject>
+#include <QList>
+#include <QPluginLoader>
+
+/*!
+ * \brief This class is a singleton that manages loading plugins.
+ */
+class PluginManager : public QObject
+{
+	Q_OBJECT
+public:
+	/*!
+	 * \brief Gets the plugin manager instance.
+	 */
+	static PluginManager &get() { return manager; }
+	
+	/*!
+	 * \brief Loads plugins from the given directory.
+	 * This function does \e not initialize the plugins. It simply loads their
+	 * classes. Use the init functions to initialize the various plugin types.
+	 * \param The directory to load plugins from.
+	 * \return True if successful. False on failure.
+	 */
+	bool loadPlugins(QString pluginDir);
+	
+	/*!
+	 * \brief Initializes the instance type plugins.
+	 * \return True if successful. False on failure.
+	 */
+	bool initInstanceTypes();
+	
+	/*!
+	 * \brief Checks how many plugins are loaded.
+	 * \return The number of plugins.
+	 */
+	int count() { return m_plugins.count(); }
+	
+	/*!
+	 * \brief Gets the plugin at the given index.
+	 * \param index The index of the plugin to get.
+	 * \return The plugin at the given index.
+	 */
+	QObject *getPlugin(int index);
+	
+private:
+	PluginManager();
+	
+	QList<QObject *> m_plugins;
+	
+	static PluginManager manager;
+};
+
+#endif // PLUGINMANAGER_H