[Unordered list-based hierarchy
tom@wwworldmedia.com**20050708160035] {
hunk ./incl_hierarchy.phtml 5
-	
+
+	//
+	// Basic, useless Hierarchy
+	//	
hunk ./incl_hierarchy.phtml 66
+	
+	
+	//
+	// Basic select-oriented hierarchy
+	//
hunk ./incl_hierarchy.phtml 177
+			sajax_handle_client_request();
+			return true;
+		}
+	}
+
+
+
+	//
+	// TreeHierarchy
+	//
+	class TreeHierarchy extends Hierarchy {
+		function HtmlTreeHierarchy() {
+			$this->Hierarchy();	
+		}
+		
+		function renderHeader() {
+			$html = "<script><!--";
+			$html.= sajax_get_javascript();
+			$html.= "
+				
+				var h_closed_img = '<img src=folder-closed.gif border=0>';
+				var h_open_img = '<img src=folder-open.gif border=0>';
+				
+				function h_open_or_close(id, data_key) {
+					var child_elem_id = 'h-child-' + id + data_key;
+					var button_elem_id = 'h-button-' + id + data_key;
+					var open_or_closed = elem(child_elem_id).getAttribute('hstatus');
+					if (open_or_closed == 'open') {
+						Element.hide(child_elem_id);
+						Element.Class.remove(child_elem_id, 'h-open');
+						Element.Class.add(child_elem_id, 'h-closed');
+						// alert('Classes after closing.. ' + get_repr(Element.Class.get(child_elem_id)));
+						elem(child_elem_id).setAttribute('hstatus', 'closed');
+						elem(button_elem_id).innerHTML = h_closed_img;
+					} else {
+						eval('h_load_data_' + id + '(\'' + data_key + '\')');
+						Element.show(child_elem_id);
+						Element.Class.remove(child_elem_id, 'h-closed');
+						Element.Class.add(child_elem_id, 'h-open');
+						// alert('Classes after opening.. ' + get_repr(Element.Class.get(child_elem_id)));
+						elem(child_elem_id).setAttribute('hstatus', 'open');
+						elem(button_elem_id).innerHTML = h_open_img;
+					}
+				}
+				
+				function h_click(id, data_key) {
+					// alert('h_click(id: ' + id + ' data: ' + data_key + ')');
+					h_open_or_close(id, data_key);
+				}
+				
+				function h_make_link(my_id, my_data_key, child_id, child_data_key) {
+					var html = '';
+					
+					html = html + '<a hstatus=\"closed\" class=\"h-button\" id=\"h-button-' + child_id + child_data_key + '\" href=\"#\" onclick=\"h_click(\'' + child_id + '\',\'' + child_data_key + '\')\">';
+					html = html + h_closed_img + '</a>';
+					return html;
+				}
+				
+				function h_make_empty_child(level, child_id, child_data_key) {
+					return '<ul hstatus=\"closed\" class=\"h-closed h-tree-' + level + '\" id=\"h-child-' + child_id + child_data_key + '\"></ul>';
+				}
+				
+				// --></script><div class=\"h-tree\">";
+			return $html;
+		}
+		
+		function renderLevel($n) {
+			$this->debug("renderLevel($n)..");
+			reset($this->levels);
+			
+			$n_plus_1 = $n + 1;
+			$lvl = $this->levels[$n];
+			$v_h = htmlspecialchars($lvl["value"]);
+			$id = $lvl["field_id"];
+			$callback = $lvl["callback"];
+			
+			$is_first = $n == 0 ? 1 : 0;
+			$is_last = $n == count($this->levels)-1 ? 1 : 0;
+			
+			if (! $is_first) {
+				$prev_id = $this->levels[$n-1]["field_id"];
+				$prev_level = $n - 1;
+			} else {
+				$prev_id = "";
+				$prev_level = 0;
+			}
+				
+			if (! $is_last) {
+				$next_id = $this->levels[$n+1]["field_id"];
+				$next_level = $n+1;
+			} else {
+				$next_id = "";
+				$next_level = 0;
+			}
+				
+			$html = "<script><!--
+			
+			function h_load_data_$id(data_key) {
+				if (! data_key)
+					data_key = '';
+				
+				x_$callback(data_key, { callback: h_ready_cb_$id, extra_data: data_key });
+			}
+			
+			function h_ready_cb_$id(data, this_data_key) {
+				// populate the UL and build sub-ULs.
+				
+				var html = '';
+				
+				if (! this_data_key)
+					this_data_key = '';
+				
+				for (var child_data_key in data) {
+					var label = data[child_data_key];
+					
+					html = html + '<li> ';
+					if (child_data_key != 0 && $is_last == 0) {
+						html = html + h_make_link('$id', this_data_key, '$next_id', child_data_key);
+					}
+					html = html + label;
+					if (child_data_key != 0 && $is_last == 0) {
+						html = html + h_make_empty_child($next_level, '$next_id', child_data_key);
+					}
+				}
+				
+				elem('h-child-$id' + this_data_key).innerHTML = html;
+			}
+			
+			// --></script>";
+			
+			if ($is_first)
+				$html .= "<ul id=\"h-child-$id\" class=\"h-closed h-tree-0\"></ul>";
+			
+			return $html;
+		}
+		
+		function renderFooter() {
+			$first_id = $this->levels[0]["field_id"];
+			$html = "<script><!--
+			
+			setTimeout('h_open_or_close(\'$first_id\', \'\');', 100);
+			
+			// --></script>
+				</div>";
+			return $html;
+		}
+		
+		function render() {
+			global $sajax_debug_mode;
+			
+			$n = 0;
+			// $sajax_debug_mode = true;
+			$html = $this->renderHeader();
+			reset($this->levels);
+			foreach ($this->levels as $lvl) {
+				$html .= $this->renderLevel($n);
+				$n++;
+			}
+			$html .= $this->renderFooter();
+			return $html;
+		}
+		
+		function handleRequest() {
}