Added Article List Tree View

app/helpers/knowledgebase_helper.rb

@@ -49,6 +49,10 @@ def sort_categories?
   def show_category_totals?
     redmine_knowledgebase_settings_value(:show_category_totals)
   end
+
+  def show_article_tree_lists?
+    redmine_knowledgebase_settings_value(:show_article_tree_lists)
+  end
 
   def updated_by(updated, updater)
      l(:label_updated_who, :updater => link_to_user(updater), :age => time_tag(updated)).html_safe

app/views/articles/_article_tree.erb

@@ -0,0 +1,54 @@
+<div id="article-tree-options">	
+	<a id="articleTreeExpandBtn" href="#" class="btn" onclick="articleTree.expandAllNodes(); articleTree.reload(); expandArticleTree();"><%= l(:label_expand_all) %></a>
+	<a id="articleTreeCollapseBtn" href="#" class="btn" onclick="articleTree.collapseAllNodes(); articleTree.reload(); collapseArticleTree();"><%= l(:label_collapse_all) %></a>
+</div>
+
+<div id="article-tree"></div>
+
+<script type="text/javascript">
+function expandArticleTree() {
+	$('#articleTreeExpandBtn').hide(); 
+	$('#articleTreeCollapseBtn').show();
+}
+
+function collapseArticleTree() {
+	$('#articleTreeCollapseBtn').hide(); 
+	$('#articleTreeExpandBtn').show();
+}
+
+var expandIcon = '<i class="icon-folder-expand"></i>';
+var collapseIcon = '<i class="icon-folder-collapse"></i>';
+
+var rootNode = new TreeNode("Categories", 
+	{
+		icon: expandIcon
+	}
+);
+
+rootNode.on('expand', function(node){
+  node.setOptions({
+	icon: expandIcon
+  });
+});
+
+rootNode.on('collapse', function(node){
+  node.setOptions({
+	icon: collapseIcon
+  });
+});
+
+<% cats = @categories %>
+<% cats = cats.sort_by(&:title) if sort_categories? %>
+<% cats.each do |category| %>
+	<%= render :partial => "articles/article_tree_row", :locals => { :category => category, :parent_node_id => 'rootNode' } %>	
+<% end %>
+
+var articleTree = new TreeView(rootNode, "#article-tree");
+
+$(document).ready(function() {
+	articleTree.collapseAllNodes(); 
+	articleTree.reload();
+	collapseArticleTree();
+});
+
+</script>

app/views/articles/_article_tree_row.erb

@@ -0,0 +1,38 @@
+node<%= category.id %> = new TreeNode('<%= link_to(category.title, {:controller => 'categories', :action => 'show', :id => category.id, :project_id => @project} ) %>', 
+	{
+		icon: expandIcon
+	}
+);
+
+node<%= category.id %>.on('expand', function(node){
+  node.setOptions({
+	icon: expandIcon
+  });
+});
+
+node<%= category.id %>.on('collapse', function(node){
+  node.setOptions({
+	icon: collapseIcon
+  });
+});
+
+<%= parent_node_id %>.addChild(node<%= category.id %>);
+
+<% subs = category.children %>
+<% subs = subs.sort_by(&:title) if sort_categories? %>
+<% subs.each do |subcat| %>
+	<%= render :partial => 'articles/article_tree_row', :locals => { :category => subcat, :parent_node_id => "node#{category.id}" } %>	
+<% end %>
+
+<% arts = category.articles %>
+<% arts = arts.sort_by(&:title) if sort_categories? %>
+<% arts.each do |article| %>
+	<% truncate_length = 100 if local_assigns[:truncate_length].nil? %>
+
+	node<%= category.id %>.addChild(new TreeNode('<%= link_to truncate(article.title, :length => truncate_length), { :controller => 'articles', :action => 'show', :id => article.id, :project_id => @project}, :title => article.title %>', 
+		{
+			icon: '<i class="icon-article"></i>'
+		}
+	));
+<% end %>
+

app/views/articles/_index_original.html.erb

@@ -12,6 +12,14 @@
             <% end %>
         </ul>
         </div>
+
+		<% if show_article_tree_lists?	%>	
+			<div class="articles box">
+				<h3><%= l(:title_article_tree_lists) %></h3>
+				<%= render :partial => 'articles/article_tree' %>            
+			</div>
+		<% end %>
+
         <% if User.current.allowed_to?(:view_recent_articles, @project) %>
           <h3><%= l(:title_recently_updated_articles) %></h3>
           <div class="articles index-summary">

app/views/redmine_knowledgebase/_knowledgebase_settings.html.erb

@@ -45,6 +45,11 @@
   <%= check_box_tag 'settings[show_tiled_article_lists]', 1, @settings[:show_tiled_article_lists] %>
 </p>
 
+<p>
+  <%= label_tag :settings_show_category_tree_lists, l(:show_article_tree_lists) %>
+  <%= check_box_tag 'settings[show_article_tree_lists]', 1, @settings[:show_article_tree_lists] %>
+</p>
+
 <p>
   <%= label_tag :settings_critical_tags, l(:critical_tags) %>
   <%= text_field_tag "settings[critical_tags]", @settings[:critical_tags] %>