/// <summary>
/// Do a recursive walk on the hierarchy to find all this language files in it.
/// It will generate an event for every file found.
/// </summary>
private void InternalScanHierarchy(uint itemId)
{
uint currentItem = itemId;
while (VSConstants.VSITEMID_NIL != currentItem) {
// If this item is a my language file, then send the add item event.
string itemName;
if ((null != onItemAdded) && IsAnalyzableSource(currentItem, out itemName)) {
HierarchyEventArgs args = new HierarchyEventArgs(currentItem, itemName);
onItemAdded(_hierarchy, args);
}
// NOTE: At the moment we skip the nested hierarchies, so here we look for the
// children of this node.
// Before looking at the children we have to make sure that the enumeration has not
// side effects to avoid unexpected behavior.
object propertyValue;
bool canScanSubitems = true;
int hr = _hierarchy.GetProperty(currentItem, (int)__VSHPROPID.VSHPROPID_HasEnumerationSideEffects, out propertyValue);
if ((VSConstants.S_OK == hr) && (propertyValue is bool)) {
canScanSubitems = !(bool)propertyValue;
}
// If it is allow to look at the sub-items of the current one, lets do it.
if (canScanSubitems) {
object child;
hr = _hierarchy.GetProperty(currentItem, (int)__VSHPROPID.VSHPROPID_FirstChild, out child);
if (VSConstants.S_OK == hr) {
// There is a sub-item, call this same function on it.
InternalScanHierarchy(GetItemId(child));
}
}
// Move the current item to its first visible sibling.
object sibling;
hr = _hierarchy.GetProperty(currentItem, (int)__VSHPROPID.VSHPROPID_NextSibling, out sibling);
if (VSConstants.S_OK != hr) {
currentItem = VSConstants.VSITEMID_NIL;
} else {
currentItem = GetItemId(sibling);
}
}
}
public void OnIdle()
{
if (!_isDirty) {
return;
}
var onFileChanged = OnFileChanged;
if (null != onFileChanged) {
HierarchyEventArgs args = new HierarchyEventArgs(_fileId.ItemID, _fileName);
args.TextBuffer = _buffer;
onFileChanged(_fileId.Hierarchy, args);
}
_isDirty = false;
}
public int OnItemDeleted(uint itemid)
{
// Notify that the item is deleted only if it is my language file.
string name;
if (!IsAnalyzableSource(itemid, out name)) {
return VSConstants.S_OK;
}
if (null != onItemDeleted) {
HierarchyEventArgs args = new HierarchyEventArgs(itemid, name);
onItemDeleted(_hierarchy, args);
}
return VSConstants.S_OK;
}
public int OnItemAdded(uint itemidParent, uint itemidSiblingPrev, uint itemidAdded)
{
// Check if the item is my language file.
string name;
if (!IsAnalyzableSource(itemidAdded, out name)) {
return VSConstants.S_OK;
}
// This item is a my language file, so we can notify that it is added to the hierarchy.
if (null != onItemAdded) {
HierarchyEventArgs args = new HierarchyEventArgs(itemidAdded, name);
onItemAdded(_hierarchy, args);
}
return VSConstants.S_OK;
}
private void OnNewFile(object sender, HierarchyEventArgs args)
{
IVsHierarchy hierarchy = sender as IVsHierarchy;
if (null == hierarchy) {
return;
}
ITextBuffer buffer = null;
if (null != args.TextBuffer) {
buffer = _adapterFactory.GetDocumentBuffer(args.TextBuffer);
}
OnNewFile(new LibraryTask(args.CanonicalName, buffer, new ModuleId(hierarchy, args.ItemID)));
}
private void OnDeleteFile(object sender, HierarchyEventArgs args)
{
IVsHierarchy hierarchy = sender as IVsHierarchy;
if (null == hierarchy) {
return;
}
ModuleId id = new ModuleId(hierarchy, args.ItemID);
LibraryNode node = null;
lock (_files) {
if (_files.TryGetValue(id, out node)) {
_files.Remove(id);
}
}
if (null != node) {
_library.RemoveNode(node);
}
}
public int OnBeforeLastDocumentUnlock(uint docCookie, uint dwRDTLockType, uint dwReadLocksRemaining, uint dwEditLocksRemaining)
{
if ((0 != dwEditLocksRemaining) || (0 != dwReadLocksRemaining)) {
return VSConstants.S_OK;
}
TextLineEventListener listener;
if (!_documents.TryGetValue(docCookie, out listener) || (null == listener)) {
return VSConstants.S_OK;
}
using (listener) {
_documents.Remove(docCookie);
// Now make sure that the information about this file are up to date (e.g. it is
// possible that Class View shows something strange if the file was closed without
// saving the changes).
HierarchyEventArgs args = new HierarchyEventArgs(listener.FileID.ItemID, listener.FileName);
OnNewFile(listener.FileID.Hierarchy, args);
}
return VSConstants.S_OK;
}