add assets

Author: vinniefalco

assets/index.js

@@ -0,0 +1,87 @@
+// Append using posix-style a file name or directory to Base
+function append(Base, New) {
+  if (!New)
+    return Base;
+  if (Base)
+    Base += "/";
+  Base += New;
+  return Base;
+}
+
+// Get relative path to access FilePath from CurrentDirectory
+function computeRelativePath(FilePath, CurrentDirectory) {
+  var Path = FilePath;
+  while (Path) {
+    if (CurrentDirectory == Path)
+      return FilePath.substring(Path.length + 1);
+    Path = Path.substring(0, Path.lastIndexOf("/"));
+  }
+
+  var Dir = CurrentDirectory;
+  var Result = "";
+  while (Dir) {
+    if (Dir == FilePath)
+      break;
+    Dir = Dir.substring(0, Dir.lastIndexOf("/"));
+    Result = append(Result, "..")
+  }
+  Result = append(Result, FilePath.substring(Dir.length))
+  return Result;
+}
+
+function genLink(Ref, CurrentDirectory) {
+  var Path = computeRelativePath(Ref.Path, CurrentDirectory);
+  if (Ref.RefType == "namespace")
+    Path = append(Path, "index.html");
+  else
+    Path = append(Path, Ref.Name + ".html")
+
+    ANode = document.createElement("a");
+  ANode.setAttribute("href", Path);
+  var TextNode = document.createTextNode(Ref.Name);
+  ANode.appendChild(TextNode);
+  return ANode;
+}
+
+function genHTMLOfIndex(Index, CurrentDirectory, IsOutermostList) {
+  // Out will store the HTML elements that Index requires to be generated
+  var Out = [];
+  if (Index.Name) {
+    var SpanNode = document.createElement("span");
+    var TextNode = document.createTextNode(Index.Name);
+    SpanNode.appendChild(genLink(Index, CurrentDirectory));
+    Out.push(SpanNode);
+  }
+  if (Index.Children.length == 0)
+    return Out;
+  // Only the outermost list should use ol, the others should use ul
+  var ListNodeName = IsOutermostList ? "ol" : "ul";
+  var ListNode = document.createElement(ListNodeName);
+  for (Child of Index.Children) {
+    var LiNode = document.createElement("li");
+    ChildNodes = genHTMLOfIndex(Child, CurrentDirectory, false);
+    for (Node of ChildNodes)
+      LiNode.appendChild(Node);
+    ListNode.appendChild(LiNode);
+  }
+  Out.push(ListNode);
+  return Out;
+}
+
+function createIndex(Index) {
+  // Get the DOM element where the index will be created
+  var IndexDiv = document.getElementById("sidebar-left");
+  // Get the relative path of this file
+  CurrentDirectory = IndexDiv.getAttribute("path");
+  var IndexNodes = genHTMLOfIndex(Index, CurrentDirectory, true);
+  for (Node of IndexNodes)
+    IndexDiv.appendChild(Node);
+}
+
+// Runs after DOM loads
+document.addEventListener("DOMContentLoaded", function() {
+  // JsonIndex is a variable from another file that contains the index
+  // in JSON format
+  var Index = JSON.parse(JsonIndex);
+  createIndex(Index);
+});