/// <summary>
/// Registers the specified plugin item in the plugin tree.
/// </summary>
/// <param name="itemMetadata">Metadata structure of the item to register.</param>
/// <returns><c>true</c>, if the plugin item could be registered, <c>false</c>,
/// if the item already existed and <see cref="PluginItemMetadata.IsRedundant"/> is specified.</returns>
/// <exception cref="ArgumentException">If there is already an item registered at the registration
/// location and the <see cref="PluginItemMetadata.IsRedundant"/> flag is not set.</exception>
internal bool RegisterItem(PluginItemMetadata itemMetadata)
{
lock (_syncObj)
{
IRegistryNode node = GetRegistryNode(itemMetadata.RegistrationLocation, true);
itemMetadata.PluginRuntime = this;
if (node.Items != null && node.Items.ContainsKey(itemMetadata.Id))
{
if (itemMetadata.IsRedundant)
{
PluginItemRegistration itemRegistration = (PluginItemRegistration)node.Items[itemMetadata.Id];
itemRegistration.AdditionalRedundantItemsMetadata.Add(itemMetadata);
return(false);
}
else
{
throw new ArgumentException(string.Format("At location '{0}', a plugin item with id '{1}' is already registered",
itemMetadata.RegistrationLocation, itemMetadata.Id));
}
}
PluginItemRegistration resultItemRegistration = new PluginItemRegistration(itemMetadata);
node.AddItem(itemMetadata.Id, resultItemRegistration);
_itemRegistrations.Add(itemMetadata, resultItemRegistration);
}
return(true);
}
/// <summary>
/// Unregisters the specified plugin item from the plugin tree.
/// </summary>
/// <param name="itemMetadata">Meta data structure of the item to unregister.</param>
/// <returns>Plugin item registration structure of the item to be unregistered.</returns>
internal void UnregisterItem(PluginItemMetadata itemMetadata)
{
lock (_syncObj)
try
{
IRegistryNode node = GetRegistryNode(itemMetadata.RegistrationLocation, false);
if (node == null || node.Items == null)
{
return;
}
if (node.Items.ContainsKey(itemMetadata.Id))
{
PluginItemRegistration itemRegistration = (PluginItemRegistration)node.Items[itemMetadata.Id];
// Check, if there are additional redundant items registered at this position. If yes, we'll use
// the first of them instead of the old item to be unregistered.
PluginItemMetadata newItemMetadata = null;
IEnumerator <PluginItemMetadata> enumerator = itemRegistration.AdditionalRedundantItemsMetadata.GetEnumerator();
if (enumerator.MoveNext())
{
newItemMetadata = enumerator.Current;
itemRegistration.AdditionalRedundantItemsMetadata.Remove(newItemMetadata);
}
node.Items.Remove(itemMetadata.Id);
if (newItemMetadata != null)
{
newItemMetadata.PluginRuntime.RegisterItem(newItemMetadata);
}
}
}
finally
{
_itemRegistrations.Remove(itemMetadata);
}
}
public void Continue(PluginItemRegistration itemRegistration)
{
}
public void Stop(PluginItemRegistration itemRegistration)
{
Uninstall();
}
public bool RequestEnd(PluginItemRegistration itemRegistration)
{
return true;
}
protected void RemoveLanguageResource(PluginItemRegistration itemRegistration)
{
PluginResource languageResource = (PluginResource) itemRegistration.Item;
lock (_syncObj)
_languageDirectories.Remove(languageResource.Path);
ReLoad();
}
/// <summary>
/// Registers the specified plugin item in the plugin tree.
/// </summary>
/// <param name="itemMetadata">Metadata structure of the item to register.</param>
/// <returns><c>true</c>, if the plugin item could be registered, <c>false</c>,
/// if the item already existed and <see cref="PluginItemMetadata.IsRedundant"/> is specified.</returns>
/// <exception cref="ArgumentException">If there is already an item registered at the registration
/// location and the <see cref="PluginItemMetadata.IsRedundant"/> flag is not set.</exception>
internal bool RegisterItem(PluginItemMetadata itemMetadata)
{
lock (_syncObj)
{
IRegistryNode node = GetRegistryNode(itemMetadata.RegistrationLocation, true);
itemMetadata.PluginRuntime = this;
if (node.Items != null && node.Items.ContainsKey(itemMetadata.Id))
if (itemMetadata.IsRedundant)
{
PluginItemRegistration itemRegistration = (PluginItemRegistration) node.Items[itemMetadata.Id];
itemRegistration.AdditionalRedundantItemsMetadata.Add(itemMetadata);
return false;
}
else
throw new ArgumentException(string.Format("At location '{0}', a plugin item with id '{1}' is already registered",
itemMetadata.RegistrationLocation, itemMetadata.Id));
PluginItemRegistration resultItemRegistration = new PluginItemRegistration(itemMetadata);
node.AddItem(itemMetadata.Id, resultItemRegistration);
_itemRegistrations.Add(itemMetadata, resultItemRegistration);
}
return true;
}
