// Load the extension nodes at the specified path. If the path
// contains extension nodes implemented in an add-in which is
// not loaded, the add-in will be automatically loaded
internal void LoadExtensions(string requestedExtensionPath)
{
TreeNode node = GetNode(requestedExtensionPath);
if (node == null)
{
throw new InvalidOperationException("Extension point not defined: " + requestedExtensionPath);
}
ExtensionPoint ep = node.ExtensionPoint;
if (ep != null)
{
// Collect extensions to be loaded from add-ins. Before loading the extensions,
// they must be sorted, that's why loading is split in two steps (collecting + loading).
ArrayList loadData = new ArrayList();
foreach (string addin in GetAddinsForPath(ep.Path, ep.Addins))
{
ExtensionLoadData ed = GetAddinExtensions(addin, ep);
if (ed != null)
{
// Insert the addin data taking into account dependencies.
// An add-in must be processed after all its dependencies.
bool added = false;
for (int n = 0; n < loadData.Count; n++)
{
ExtensionLoadData other = (ExtensionLoadData)loadData [n];
if (AddinManager.Registry.AddinDependsOn(other.AddinId, ed.AddinId))
{
loadData.Insert(n, ed);
added = true;
break;
}
}
if (!added)
{
loadData.Add(ed);
}
}
}
// Now load the extensions
ArrayList loadedNodes = new ArrayList();
foreach (ExtensionLoadData data in loadData)
{
foreach (Extension ext in data.Extensions)
{
TreeNode cnode = GetNode(ext.Path);
if (cnode != null && cnode.ExtensionNodeSet != null)
{
LoadModuleExtensionNodes(ext, data.AddinId, cnode.ExtensionNodeSet, loadedNodes);
}
else
{
AddinManager.ReportError("Extension node not found or not extensible: " + ext.Path, data.AddinId, null, false);
}
}
}
// Call the OnAddinLoaded method on nodes, if the add-in is already loaded
foreach (TreeNode nod in loadedNodes)
{
nod.ExtensionNode.OnAddinLoaded();
}
NotifyExtensionsChanged(new ExtensionEventArgs(requestedExtensionPath));
}
}
internal void ActivateAddinExtensions(string id)
{
// Looks for loaded extension points which are extended by the provided
// add-in, and adds the new nodes
try {
fireEvents = true;
Addin addin = AddinManager.Registry.GetAddin(id);
if (addin == null)
{
AddinManager.ReportError("Required add-in not found", id, null, false);
return;
}
// Take note that his add-in has been enabled at run-time
// Needed because loaded add-in descriptions may not include this add-in.
RegisterRuntimeEnabledAddin(id);
// Look for loaded extension points
Hashtable eps = new Hashtable();
foreach (ModuleDescription mod in addin.Description.AllModules)
{
foreach (Extension ext in mod.Extensions)
{
ExtensionPoint ep = tree.FindLoadedExtensionPoint(ext.Path);
if (ep != null && !eps.Contains(ep))
{
eps.Add(ep, ep);
}
}
}
// Add the new nodes
ArrayList loadedNodes = new ArrayList();
foreach (ExtensionPoint ep in eps.Keys)
{
ExtensionLoadData data = GetAddinExtensions(id, ep);
if (data != null)
{
foreach (Extension ext in data.Extensions)
{
TreeNode node = GetNode(ext.Path);
if (node != null && node.ExtensionNodeSet != null)
{
if (node.ChildrenLoaded)
{
LoadModuleExtensionNodes(ext, data.AddinId, node.ExtensionNodeSet, loadedNodes);
}
}
else
{
AddinManager.ReportError("Extension node not found or not extensible: " + ext.Path, id, null, false);
}
}
// Global extension change event. Other events are fired by LoadModuleExtensionNodes.
NotifyExtensionsChanged(new ExtensionEventArgs(ep.Path));
}
}
// Call the OnAddinLoaded method on nodes, if the add-in is already loaded
foreach (TreeNode nod in loadedNodes)
{
nod.ExtensionNode.OnAddinLoaded();
}
}
finally {
fireEvents = false;
}
// Do the same in child contexts
lock (conditionTypes) {
if (childContexts != null)
{
foreach (WeakReference wref in childContexts)
{
ExtensionContext ctx = wref.Target as ExtensionContext;
if (ctx != null)
{
ctx.ActivateAddinExtensions(id);
}
}
}
}
}
internal bool LoadAddin(IProgressStatus statusMonitor, string id, bool throwExceptions)
{
try {
if (IsAddinLoaded(id))
{
return(true);
}
if (!AddinManager.Registry.IsAddinEnabled(id))
{
string msg = GettextCatalog.GetString("Disabled add-ins can't be loaded.");
AddinManager.ReportError(msg, id, null, false);
if (throwExceptions)
{
throw new InvalidOperationException(msg);
}
return(false);
}
ArrayList addins = new ArrayList();
Stack depCheck = new Stack();
ResolveLoadDependencies(addins, depCheck, id, false);
addins.Reverse();
if (statusMonitor != null)
{
statusMonitor.SetMessage("Loading Addins");
}
for (int n = 0; n < addins.Count; n++)
{
if (statusMonitor != null)
{
statusMonitor.SetProgress((double)n / (double)addins.Count);
}
Addin iad = (Addin)addins [n];
if (IsAddinLoaded(iad.Id))
{
continue;
}
if (statusMonitor != null)
{
statusMonitor.SetMessage(string.Format(GettextCatalog.GetString("Loading {0} add-in"), iad.Id));
}
if (!InsertAddin(statusMonitor, iad))
{
return(false);
}
}
return(true);
}
catch (Exception ex) {
AddinManager.ReportError("Add-in could not be loaded: " + ex.Message, id, ex, false);
if (statusMonitor != null)
{
statusMonitor.ReportError("Add-in '" + id + "' could not be loaded.", ex);
}
if (throwExceptions)
{
throw;
}
return(false);
}
}
void LoadExtensionElement(TreeNode tnode, string addin, ExtensionNodeDescriptionCollection extension, ref int curPos, BaseCondition parentCondition, bool inComplextCondition, ArrayList addedNodes)
{
foreach (ExtensionNodeDescription elem in extension)
{
if (inComplextCondition)
{
parentCondition = ReadComplexCondition(elem, parentCondition);
inComplextCondition = false;
continue;
}
if (elem.NodeName == "ComplexCondition")
{
LoadExtensionElement(tnode, addin, elem.ChildNodes, ref curPos, parentCondition, true, addedNodes);
continue;
}
if (elem.NodeName == "Condition")
{
Condition cond = new Condition(elem, parentCondition);
LoadExtensionElement(tnode, addin, elem.ChildNodes, ref curPos, cond, false, addedNodes);
continue;
}
string after = elem.GetAttribute("insertafter");
if (after.Length > 0)
{
int i = tnode.Children.IndexOfNode(after);
if (i != -1)
{
curPos = i + 1;
}
}
string before = elem.GetAttribute("insertbefore");
if (before.Length > 0)
{
int i = tnode.Children.IndexOfNode(before);
if (i != -1)
{
curPos = i;
}
}
// Find the type of the node in this extension
ExtensionNodeType ntype = AddinManager.SessionService.FindType(tnode.ExtensionNodeSet, elem.NodeName, addin);
if (ntype == null)
{
AddinManager.ReportError("Node '" + elem.NodeName + "' not allowed in extension: " + tnode.GetPath(), addin, null, false);
continue;
}
string id = elem.GetAttribute("id");
if (id.Length == 0)
{
id = AutoIdPrefix + (++internalId);
}
TreeNode cnode = new TreeNode(id);
ExtensionNode enode = ReadNode(cnode, addin, ntype, elem);
if (enode == null)
{
continue;
}
cnode.Condition = parentCondition;
cnode.ExtensionNodeSet = ntype;
tnode.InsertChildNode(curPos, cnode);
addedNodes.Add(cnode);
if (cnode.Condition != null)
{
Context.RegisterNodeCondition(cnode, cnode.Condition);
}
// Load children
if (elem.ChildNodes.Count > 0)
{
int cp = 0;
LoadExtensionElement(cnode, addin, elem.ChildNodes, ref cp, parentCondition, false, addedNodes);
}
curPos++;
}
if (Context.FireEvents)
{
tnode.NotifyChildrenChanged();
}
}
bool InitializeNodeType(ExtensionNodeType ntype)
{
RuntimeAddin p = AddinManager.SessionService.GetAddin(ntype.AddinId);
if (p == null)
{
if (!AddinManager.SessionService.IsAddinLoaded(ntype.AddinId))
{
if (!AddinManager.SessionService.LoadAddin(null, ntype.AddinId, false))
{
return(false);
}
p = AddinManager.SessionService.GetAddin(ntype.AddinId);
if (p == null)
{
AddinManager.ReportError("Add-in not found", ntype.AddinId, null, false);
return(false);
}
}
}
// If no type name is provided, use TypeExtensionNode by default
if (ntype.TypeName == null || ntype.TypeName.Length == 0)
{
ntype.Type = typeof(TypeExtensionNode);
return(true);
}
ntype.Type = p.GetType(ntype.TypeName, false);
if (ntype.Type == null)
{
AddinManager.ReportError("Extension node type '" + ntype.TypeName + "' not found.", ntype.AddinId, null, false);
return(false);
}
Hashtable fields = new Hashtable();
// Check if the type has NodeAttribute attributes applied to fields.
Type type = ntype.Type;
while (type != typeof(object) && type != null)
{
foreach (FieldInfo field in type.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly))
{
NodeAttributeAttribute at = (NodeAttributeAttribute)Attribute.GetCustomAttribute(field, typeof(NodeAttributeAttribute), true);
if (at != null)
{
ExtensionNodeType.FieldData fdata = new ExtensionNodeType.FieldData();
fdata.Field = field;
fdata.Required = at.Required;
fdata.Localizable = at.Localizable;
string name;
if (at.Name != null && at.Name.Length > 0)
{
name = at.Name;
}
else
{
name = field.Name;
}
fields [name] = fdata;
}
}
type = type.BaseType;
}
if (fields.Count > 0)
{
ntype.Fields = fields;
}
return(true);
}
bool InitializeNodeType(ExtensionNodeType ntype)
{
RuntimeAddin p = AddinManager.SessionService.GetAddin(ntype.AddinId);
if (p == null)
{
if (!AddinManager.SessionService.IsAddinLoaded(ntype.AddinId))
{
if (!AddinManager.SessionService.LoadAddin(null, ntype.AddinId, false))
{
return(false);
}
p = AddinManager.SessionService.GetAddin(ntype.AddinId);
if (p == null)
{
AddinManager.ReportError("Add-in not found", ntype.AddinId, null, false);
return(false);
}
}
}
// If no type name is provided, use TypeExtensionNode by default
if (ntype.TypeName == null || ntype.TypeName.Length == 0)
{
ntype.Type = typeof(TypeExtensionNode);
return(true);
}
ntype.Type = p.GetType(ntype.TypeName, false);
if (ntype.Type == null)
{
AddinManager.ReportError("Extension node type '" + ntype.TypeName + "' not found.", ntype.AddinId, null, false);
return(false);
}
Hashtable fields = new Hashtable();
ArrayList reqFields = new ArrayList();
// Check if the type has NodeAttribute attributes applied to fields.
foreach (FieldInfo field in ntype.Type.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance))
{
NodeAttributeAttribute at = (NodeAttributeAttribute)Attribute.GetCustomAttribute(field, typeof(NodeAttributeAttribute), true);
if (at != null)
{
string name;
if (at.Name != null && at.Name.Length > 0)
{
name = at.Name;
}
else
{
name = field.Name;
}
if (at.Required)
{
reqFields.Add(name);
}
fields [name] = field;
}
}
if (fields.Count > 0)
{
ntype.Fields = fields;
if (reqFields.Count > 0)
{
ntype.RequiredFields = (string[])reqFields.ToArray(typeof(string));
}
}
return(true);
}
