private void LoadPluginsFromRegistryPaths(PluginLoader pluginLoader, bool showErrors)
{
try
{
// build list of assemblies
ArrayList assemblyPaths = new ArrayList();
// HKCU
using (SettingsPersisterHelper userSettingsKey = ApplicationEnvironment.UserSettingsRoot.GetSubSettings(PLUGIN_ASSEMBLIES))
AddPluginsFromKey(assemblyPaths, userSettingsKey);
if (_pluginsKey != PLUGIN_LEGACY_KEY)
using (RegistryKey legacyKey = Registry.CurrentUser.OpenSubKey(PLUGIN_LEGACY_KEY))
if (legacyKey != null) // Don't create the key if it doesn't already exist
using (SettingsPersisterHelper legacyUserSettingsKey = new SettingsPersisterHelper(new RegistrySettingsPersister(Registry.CurrentUser, PLUGIN_LEGACY_KEY)))
AddPluginsFromKey(assemblyPaths, legacyUserSettingsKey);
// HKLM (this may not work for limited users and/or on vista)
try
{
if (ApplicationEnvironment.MachineSettingsRoot.HasSubSettings(PLUGIN_ASSEMBLIES))
using (SettingsPersisterHelper machineSettingsKey = ApplicationEnvironment.MachineSettingsRoot.GetSubSettings(PLUGIN_ASSEMBLIES))
AddPluginsFromKey(assemblyPaths, machineSettingsKey);
if (_pluginsKey != PLUGIN_LEGACY_KEY)
using (RegistryKey legacyKey = Registry.LocalMachine.OpenSubKey(PLUGIN_LEGACY_KEY))
if (legacyKey != null) // Don't create the key if it doesn't already exist
using (SettingsPersisterHelper legacyUserSettingsKey = new SettingsPersisterHelper(new RegistrySettingsPersister(Registry.LocalMachine, PLUGIN_LEGACY_KEY)))
AddPluginsFromKey(assemblyPaths, legacyUserSettingsKey);
}
catch (Exception ex)
{
Debug.WriteLine("Error occurred while attempting to read HKLM for PluginAssemblies: " + ex.ToString());
}
// load them
foreach (string assemblyPath in assemblyPaths)
pluginLoader.LoadPluginsFromAssemblyPath(assemblyPath, showErrors);
}
catch (Exception ex)
{
Trace.Fail("Unexpected exception loading plugins from registry paths: " + ex.ToString());
}
}
private void LoadPluginTypes(bool showErrors)
{
lock (_pluginTypesTable)
{
// reset existing contents
_pluginTypesTable.Clear();
PluginLoader pluginLoader = new PluginLoader(typeof(WriterPlugin).Assembly);
//register the callbacks for each supported plugin type.
foreach (Type pluginType in SupportedPluginTypes)
{
//subscribe for a callback when a matching implementation type is found.
pluginLoader.AddPluginTypeCallback(pluginType, new PluginLoader.PluginLoadedCallback(RegisterPluginImpl));
//create a list to hold discovered plugin implementations.
_pluginTypesTable[pluginType] = new ArrayList();
}
// load from plugin directory
if (PluginDirectory != null && Directory.Exists(PluginDirectory))
pluginLoader.LoadPluginsFromDirectory(PluginDirectory, showErrors);
// load from plugins specified in the registry
LoadPluginsFromRegistryPaths(pluginLoader, showErrors);
// load from legacy plugin directory
if (PluginDirectoryLegacy != null && Directory.Exists(PluginDirectoryLegacy))
pluginLoader.LoadPluginsFromDirectory(PluginDirectoryLegacy, showErrors);
}
// fire event
if (PluginListChanged != null)
PluginListChanged(this, EventArgs.Empty);
}