//--- Methods ---
public virtual NavBE Copy() {
NavBE np = new NavBE();
np.ChildCount = ChildCount;
np.DisplayName = DisplayName;
np.Id = Id;
np.NameSpace = NameSpace;
np.ParentId = ParentId;
np.RestrictionFlags = RestrictionFlags;
np.Title = Title;
return np;
}
//--- Methods ---
public virtual NavBE Copy()
{
NavBE np = new NavBE();
np.ChildCount = ChildCount;
np.DisplayName = DisplayName;
np.Id = Id;
np.NameSpace = NameSpace;
np.ParentId = ParentId;
np.RestrictionFlags = RestrictionFlags;
np.Title = Title;
return(np);
}
public Yield GetNavigationFull(DreamContext context, DreamMessage request, Result<DreamMessage> response) {
CheckResponseCache(context, false);
PageBE page = PageBL_GetPageFromUrl(context, false);
if (page.Title.IsTalk) {
page = PageBL.GetPageByTitle(page.Title.AsFront());
}
// check if requestest page exists, otherwise find nearest parent
uint new_page_id = NavBL.NEW_PAGE_ID;
ulong homepageId = DekiContext.Current.Instance.HomePageId;
List<NavBE> list;
bool expandableNav = context.GetParam("type", "compact").EqualsInvariantIgnoreCase("expandable");
// check if a page was found
if(page.ID == 0) {
// find nearest ancestor and authorize access
PageBE ancestor = page;
while(!ancestor.Title.IsHomepage) {
// fetch ancestor page based on title
ulong id = DbUtils.CurrentSession.Nav_GetNearestParent(ancestor.Title);
ancestor = PageBL.GetPageById(id);
if(PermissionsBL.IsUserAllowed(DekiContext.Current.User, ancestor, Permissions.BROWSE)) {
break;
}
// determine parent page title
Title title = ancestor.Title.GetParent();
if(title == null) {
// current ancestor was the homepage
break;
}
ancestor = new PageBE { Title = title };
}
if(ancestor.ID == 0) {
ancestor = PageBL.GetHomePage();
}
list = NavBL.QueryNavTreeData(ancestor, context.Culture, expandableNav).ToList();
// find the nearest parent node and increase its child count
foreach(NavBE nearestAncestors in list) {
if(nearestAncestors.Id == ancestor.ID) {
nearestAncestors.ChildCount = nearestAncestors.ChildCount + 1;
break;
}
}
// for each missing node, generate a dummy page and insert it into result set
ulong ancestor_id = ancestor.ID;
string[] ancestor_segments = ancestor.Title.AsUnprefixedDbSegments();
string[] new_page_segments = page.Title.AsUnprefixedDbSegments();
List<NavBE> newNodes = new List<NavBE>(32);
for(int i = ancestor_segments.Length; i < new_page_segments.Length; ++i) {
string title = string.Join("/", new_page_segments, 0, i + 1);
// create dummy node with <page><page_id /><page_namespace /><page_title ><page_parent /><page_children /></page>
NavBE newPage = new NavBE {
Id = new_page_id,
NameSpace = (ushort)page.Title.Namespace,
Title = title,
ParentId = (ancestor_id == homepageId) ? 0 : ancestor_id,
ChildCount = (i == new_page_segments.Length - 1) ? 0 : 1
};
newNodes.Add(newPage);
// update page information
page.ID = new_page_id;
page.ParentID = ancestor_id;
ancestor_id = new_page_id++;
}
// check if we need to remove the children nodes of the ancestor
ancestor_id = (ancestor.ID == homepageId) ? 0 : (uint)ancestor.ID;
if(!expandableNav && (new_page_segments.Length - ancestor_segments.Length) > 1) {
// remove ancestor children and add new dummy nodes
for(int start = 0; start < list.Count; ++start ) {
// check if we found a matching child
if((list[start].ParentId == ancestor_id) && (list[start].Id != homepageId)) {
// look for last child to remove so we can remove an entire range at once
int end = start + 1;
for(; (end < list.Count) && (list[end].ParentId == ancestor_id) && (list[end].Id != homepageId); ++end) { }
list.RemoveRange(start, end - start);
--start;
}
}
} else {
// find where among the ancestor children we need to insert the dummy node
for(int index = 0; index < list.Count; ++index) {
NavBE current = list[index];
if((current.ParentId == ancestor_id) && (current.Id != homepageId)) {
string[] parts = Title.FromDbPath(NS.UNKNOWN, current.Title, current.DisplayName).AsUnprefixedDbSegments();
if((parts.Length > 0) && (new_page_segments.Length > 0) && (string.Compare(parts[parts.Length - 1], new_page_segments[parts.Length - 1], true, context.Culture) > 0)) {
// found the spot
list.InsertRange(index, newNodes);
newNodes = null;
break;
}
}
}
}
// check if we didn't find the spot
if(newNodes != null) {
// add new nodes to the end
list.AddRange(newNodes);
}
} else {
list = NavBL.QueryNavTreeData(page, context.Culture, expandableNav).ToList();
}
// find first parent
ulong parent_id = homepageId;
int parent_index = -1;
for(int i = 0; i < list.Count; ++i) {
if(list[i].Id == parent_id) {
parent_index = i;
break;
}
}
if(parent_index == -1) {
throw new Exception("unexpected [homepage not found]");
}
// add any missing ancestor nodes (might have been removed by permission check or might simply not exist)
string[] page_segments = page.Title.AsUnprefixedDbSegments();
ushort ns = (ushort)page.Title.Namespace;
for(int i = 0; i <= page_segments.Length; ++i) {
string title = string.Join("/", page_segments, 0, i);
// loop over all nodes
bool found = false;
for(int j = 0; j < list.Count; ++j) {
NavBE node = list[j];
// NOTE (steveb): we walk the path one parent at a time; however, there are a few special cases, because of namespaces
// for instance, the parent page of User:Bob is the homepage (ditto for Template:Page), but the parent page of Admin:Config is Admin:
// check if we found a node matching the current title
if((string.Compare(node.Title, title, true, context.Culture) == 0) && (((i == 0) && (ns != (ushort)NS.ADMIN)) ? (node.NameSpace == (ushort)NS.MAIN) : (node.NameSpace == ns))) {
found = true;
// let's make sure node is pointing to right parent
node.ParentId = (parent_id == homepageId) ? 0 : parent_id;
parent_id = node.Id;
parent_index = j;
break;
}
}
if(!found) {
// node is missing, let's create a new one
NavBE newPage = new NavBE {
Id = new_page_id,
NameSpace = (ushort)page.Title.Namespace,
Title = title,
ParentId = (parent_id == homepageId) ? 0 : parent_id, ChildCount = 1
};
// add new page after parent
list.Insert(parent_index + 1, newPage);
parent_id = new_page_id++;
parent_index = parent_index + 1;
}
}
// build response
if(ShowDebug(context)) {
response.Return(DreamMessage.Ok(NavBL.ConvertNavPageListToDoc(list)));
} else {
XDoc result = expandableNav ? NavBL.ComputeExpandableNavigationDocument(list, page, 0, 0, false) : NavBL.ComputeNavigationDocument(list, page, 0, 0, false, context.GetParam("width", int.MaxValue));
if(ShowXml(context)) {
response.Return(DreamMessage.Ok(result));
} else {
response.Return(DreamMessage.Ok(new XDoc("tree").Value(result.Contents)));
}
}
yield break;
}
//--- Constructors ---
public ExpandableNavPage(NavBE navPage) {
this.NavPage = navPage;
}
