Add drag and drop to structure side_bar

Gemfile

@@ -10,6 +10,7 @@ gem 'devise', '1.5.3'
 gem 'exception_notification' # Send error trace
 gem 'execjs'
 gem 'jquery-rails'
+gem 'jquery-ui-rails'
 
 gem 'kaminari', :git => 'git://github.com/amatsuda/kaminari.git'
 

Gemfile.lock

@@ -96,6 +96,9 @@ GEM
     jquery-rails (1.0.19)
       railties (~> 3.0)
       thor (~> 0.14)
+    jquery-ui-rails (0.4.0)
+      jquery-rails
+      railties (>= 3.1.0)
     json (1.6.5)
     linecache19 (0.5.12)
       ruby_core_source (>= 0.1.4)
@@ -269,6 +272,7 @@ DEPENDENCIES
   execjs
   factory_girl_rails
   jquery-rails
+  jquery-ui-rails
   kaminari!
   mini_magick
   mongo_session_store-rails3

app/assets/javascripts/lib/jquery.ui.nestedSortable.js

@@ -0,0 +1,391 @@
+/*
+ * jQuery UI Nested Sortable
+ * v 1.3.4 / 28 apr 2011
+ * http://mjsarfatti.com/sandbox/nestedSortable
+ *
+ * Depends:
+ *	 jquery.ui.sortable.js 1.8+
+ *
+ * License CC BY-SA 3.0
+ * Copyright 2010-2011, Manuele J Sarfatti
+ */
+
+(function($) {
+
+	$.widget("ui.nestedSortable", $.extend({}, $.ui.sortable.prototype, {
+
+		options: {
+			tabSize: 20,
+			disableNesting: 'ui-nestedSortable-no-nesting',
+			errorClass: 'ui-nestedSortable-error',
+			listType: 'ol',
+			maxLevels: 0,
+			revertOnError: 1
+		},
+
+		_create: function() {
+			this.element.data('sortable', this.element.data('nestedSortable'));
+			return $.ui.sortable.prototype._create.apply(this, arguments);
+		},
+
+		destroy: function() {
+			this.element
+				.removeData("nestedSortable")
+				.unbind(".nestedSortable");
+			return $.ui.sortable.prototype.destroy.apply(this, arguments);
+		},
+
+		_mouseDrag: function(event) {
+
+			//Compute the helpers position
+			this.position = this._generatePosition(event);
+			this.positionAbs = this._convertPositionTo("absolute");
+
+			if (!this.lastPositionAbs) {
+				this.lastPositionAbs = this.positionAbs;
+			}
+
+			//Do scrolling
+			if(this.options.scroll) {
+				var o = this.options, scrolled = false;
+				if(this.scrollParent[0] != document && this.scrollParent[0].tagName != 'HTML') {
+
+					if((this.overflowOffset.top + this.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity)
+						this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop + o.scrollSpeed;
+					else if(event.pageY - this.overflowOffset.top < o.scrollSensitivity)
+						this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop - o.scrollSpeed;
+
+					if((this.overflowOffset.left + this.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity)
+						this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft + o.scrollSpeed;
+					else if(event.pageX - this.overflowOffset.left < o.scrollSensitivity)
+						this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft - o.scrollSpeed;
+
+				} else {
+
+					if(event.pageY - $(document).scrollTop() < o.scrollSensitivity)
+						scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
+					else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity)
+						scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
+
+					if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity)
+						scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
+					else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity)
+						scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
+
+				}
+
+				if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour)
+					$.ui.ddmanager.prepareOffsets(this, event);
+			}
+
+			//Regenerate the absolute position used for position checks
+			this.positionAbs = this._convertPositionTo("absolute");
+
+			//Set the helper position
+			if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px';
+			if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px';
+
+			//Rearrange
+			for (var i = this.items.length - 1; i >= 0; i--) {
+
+				//Cache variables and intersection, continue if no intersection
+				var item = this.items[i], itemElement = item.item[0], intersection = this._intersectsWithPointer(item);
+				if (!intersection) continue;
+
+				if(itemElement != this.currentItem[0] //cannot intersect with itself
+					&&	this.placeholder[intersection == 1 ? "next" : "prev"]()[0] != itemElement //no useless actions that have been done before
+					&&	!$.contains(this.placeholder[0], itemElement) //no action if the item moved is the parent of the item checked
+					&& (this.options.type == 'semi-dynamic' ? !$.contains(this.element[0], itemElement) : true)
+					//&& itemElement.parentNode == this.placeholder[0].parentNode // only rearrange items within the same container
+				) {
+
+					$(itemElement).mouseenter();
+
+					this.direction = intersection == 1 ? "down" : "up";
+
+					if (this.options.tolerance == "pointer" || this._intersectsWithSides(item)) {
+						$(itemElement).mouseleave();
+						this._rearrange(event, item);
+					} else {
+						break;
+					}
+
+					// Clear emtpy ul's/ol's
+					this._clearEmpty(itemElement);
+
+					this._trigger("change", event, this._uiHash());
+					break;
+				}
+			}
+
+			var parentItem = (this.placeholder[0].parentNode.parentNode
+				       && $(this.placeholder[0].parentNode.parentNode).closest('.ui-sortable').length)
+				       ? $(this.placeholder[0].parentNode.parentNode)
+				       : null,
+			    level = this._getLevel(this.placeholder),
+			    childLevels = this._getChildLevels(this.helper),
+			    previousItem = this.placeholder[0].previousSibling ? $(this.placeholder[0].previousSibling) : null;
+
+			if (previousItem != null) {
+				while (previousItem[0].nodeName.toLowerCase() != 'li' || previousItem[0] == this.currentItem[0]) {
+					if (previousItem[0].previousSibling) {
+						previousItem = $(previousItem[0].previousSibling);
+					} else {
+						previousItem = null;
+						break;
+					}
+				}
+			}
+
+			newList = document.createElement(o.listType);
+
+			this.beyondMaxLevels = 0;
+
+			// If the item is moved to the left, send it to its parent level
+			if (parentItem != null && this.positionAbs.left < parentItem.offset().left) {
+				parentItem.after(this.placeholder[0]);
+				this._clearEmpty(parentItem[0]);
+				this._trigger("change", event, this._uiHash());
+			}
+			// If the item is below another one and is moved to the right, make it a children of it
+			else if (previousItem != null && this.positionAbs.left > previousItem.offset().left + o.tabSize) {
+				this._isAllowed(previousItem, level+childLevels+1);
+				if (!previousItem.children(o.listType).length) {
+					previousItem[0].appendChild(newList);
+				}
+				previousItem.children(o.listType)[0].appendChild(this.placeholder[0]);
+				this._trigger("change", event, this._uiHash());
+			}
+			else {
+				this._isAllowed(parentItem, level+childLevels);
+			}
+
+			//Post events to containers
+			this._contactContainers(event);
+
+			//Interconnect with droppables
+			if($.ui.ddmanager) $.ui.ddmanager.drag(this, event);
+
+			//Call callbacks
+			this._trigger('sort', event, this._uiHash());
+
+			this.lastPositionAbs = this.positionAbs;
+			return false;
+
+		},
+
+		_mouseStop: function(event, noPropagation) {
+
+			// If the item is in a position not allowed, send it back
+			if (this.beyondMaxLevels) {
+
+				this.placeholder.removeClass(this.options.errorClass);
+
+				if (this.options.revertOnError) {
+					if (this.domPosition.prev) {
+						$(this.domPosition.prev).after(this.placeholder);
+					} else {
+						$(this.domPosition.parent).prepend(this.placeholder);
+					}
+					this._trigger("revert", event, this._uiHash());
+				} else {
+					var parent = this.placeholder.parent().closest(this.options.items);
+
+					for (var i = this.beyondMaxLevels - 1; i > 0; i--) {
+						parent = parent.parent().closest(this.options.items);
+					}
+
+					parent.after(this.placeholder);
+					this._trigger("change", event, this._uiHash());
+				}
+
+			}
+
+			// Clean last empty ul/ol
+			for (var i = this.items.length - 1; i >= 0; i--) {
+				var item = this.items[i].item[0];
+				this._clearEmpty(item);
+			}
+
+			$.ui.sortable.prototype._mouseStop.apply(this, arguments);
+
+		},
+
+		serialize: function(o) {
+
+			var items = this._getItemsAsjQuery(o && o.connected),
+			    str = []; o = o || {};
+
+			$(items).each(function() {
+				var res = ($(o.item || this).attr(o.attribute || 'id') || '')
+						.match(o.expression || (/(.+)[-=_](.+)/)),
+				    pid = ($(o.item || this).parent(o.listType)
+						.parent('li')
+						.attr(o.attribute || 'id') || '')
+						.match(o.expression || (/(.+)[-=_](.+)/));
+
+				if (res) {
+					str.push(((o.key || res[1]) + '[' + (o.key && o.expression ? res[1] : res[2]) + ']')
+						+ '='
+						+ (pid ? (o.key && o.expression ? pid[1] : pid[2]) : 'root'));
+				}
+			});
+
+			if(!str.length && o.key) {
+				str.push(o.key + '=');
+			}
+
+			return str.join('&');
+
+		},
+
+		toHierarchy: function(o) {
+
+			o = o || {};
+			var sDepth = o.startDepthCount || 0,
+			    ret = [];
+
+			$(this.element).children('li').each(function () {
+				var level = _recursiveItems($(this));
+				ret.push(level);
+			});
+
+			return ret;
+
+			function _recursiveItems(li) {
+				var id = ($(li).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
+				if (id) {
+					var item = {"id" : id[2]};
+					if ($(li).children(o.listType).children('li').length > 0) {
+						item.children = [];
+						$(li).children(o.listType).children('li').each(function() {
+							var level = _recursiveItems($(this));
+							item.children.push(level);
+						});
+					}
+					return item;
+				}
+			}
+		},
+
+		toArray: function(o) {
+
+			o = o || {};
+			var sDepth = o.startDepthCount || 0,
+			    ret = [],
+			    left = 2;
+
+			ret.push({
+				"item_id": 'root',
+				"parent_id": 'none',
+				"depth": sDepth,
+				"left": '1',
+				"right": ($('li', this.element).length + 1) * 2
+			});
+
+			$(this.element).children('li').each(function () {
+				left = _recursiveArray(this, sDepth + 1, left);
+			});
+
+			ret = ret.sort(function(a,b){ return (a.left - b.left); });
+
+			return ret;
+
+			function _recursiveArray(item, depth, left) {
+
+				var right = left + 1,
+				    id,
+				    pid;
+
+				if ($(item).children(o.listType).children('li').length > 0) {
+					depth ++;
+					$(item).children(o.listType).children('li').each(function () {
+						right = _recursiveArray($(this), depth, right);
+					});
+					depth --;
+				}
+
+				id = ($(item).attr(o.attribute || 'id')).match(o.expression || (/(.+)[-=_](.+)/));
+
+				if (depth === sDepth + 1) {
+					pid = 'root';
+				} else {
+					var parentItem = ($(item).parent(o.listType)
+						.parent('li')
+						.attr(o.attribute || 'id'))
+						.match(o.expression || (/(.+)[-=_](.+)/));
+					pid = parentItem[2];
+				}
+
+				if (id) {
+						ret.push({"item_id": id[2], "parent_id": pid, "depth": depth, "left": left, "right": right});
+				}
+
+				left = right + 1;
+				return left;
+			}
+
+		},
+
+		_clearEmpty: function(item) {
+
+			var emptyList = $(item).children(this.options.listType);
+			if (emptyList.length && !emptyList.children().length) {
+				emptyList.remove();
+			}
+
+		},
+
+		_getLevel: function(item) {
+
+			var level = 1;
+
+			if (this.options.listType) {
+				var list = item.closest(this.options.listType);
+				while (!list.is('.ui-sortable')) {
+					level++;
+					list = list.parent().closest(this.options.listType);
+				}
+			}
+
+			return level;
+		},
+
+		_getChildLevels: function(parent, depth) {
+			var self = this,
+			    o = this.options,
+			    result = 0;
+			depth = depth || 0;
+
+			$(parent).children(o.listType).children(o.items).each(function (index, child) {
+					result = Math.max(self._getChildLevels(child, depth + 1), result);
+			});
+
+			return depth ? result + 1 : result;
+		},
+
+		_isAllowed: function(parentItem, levels) {
+			var o = this.options;
+			// Are we trying to nest under a no-nest or are we nesting too deep?
+			if (parentItem == null || !(parentItem.hasClass(o.disableNesting))) {
+				if (o.maxLevels < levels && o.maxLevels != 0) {
+					this.placeholder.addClass(o.errorClass);
+					this.beyondMaxLevels = levels - o.maxLevels;
+				} else {
+					this.placeholder.removeClass(o.errorClass);
+					this.beyondMaxLevels = 0;
+				}
+			} else {
+				this.placeholder.addClass(o.errorClass);
+				if (o.maxLevels < levels && o.maxLevels != 0) {
+					this.beyondMaxLevels = levels - o.maxLevels;
+				} else {
+					this.beyondMaxLevels = 1;
+				}
+			}
+		}
+
+	}));
+
+	$.ui.nestedSortable.prototype.options = $.extend({}, $.ui.sortable.prototype.options, $.ui.nestedSortable.prototype.options);
+})(jQuery);

app/assets/javascripts/site_editor.js

@@ -5,6 +5,9 @@
 // the compiled file.
 //
 //= require jquery
+//= require jquery.ui.draggable
+//= require jquery.ui.droppable
+//= require jquery.ui.sortable
 //= require jquery_ujs
 //= require bootstrap
 //= require jquery.isotope.min
@@ -14,4 +17,5 @@
 //= require side_bar_history
 //= require page_edit
 //= require tinymce-jquery
-//= require tinymce_orbit
+//= require tinymce_orbit
+//= require lib/jquery.ui.nestedSortable.js

app/assets/stylesheets/sidebar.css.erb

@@ -6,13 +6,13 @@
 .nav-list li {
 	position: relative;
 }
-.nav-list ul {
+.nav-list ol {
 	margin-left: 10px;
 }
-.nav-list ul li {
+.nav-list ol li {
 	padding: 5px 0;
 }
-.nav-list ul li a {
+.nav-list ol li a {
 	font-size: 13px;
 	padding: 3px 0px;
 	display: block;

app/controllers/admin/items_controller.rb

@@ -15,6 +15,10 @@ class Admin::ItemsController < ApplicationController
       @item = get_homepage
     end
   end
+
+  def update_position
+    render :nothing => true
+  end
   
   protected
   

app/helpers/admin/item_helper.rb

@@ -9,8 +9,8 @@ module Admin::ItemHelper
         when 'Link'
           dest = admin_link_path(node)
       end
-      ret << "<ul>" unless node.parent.nil?
+      # ret << "<ol>" unless node.parent.nil?
-      ret << "<li>"
+      ret << "<li id='#{node.id}'>"
       ret << "<div class='with_action'>"
       ret << (link_to node.i18n_variable[I18n.locale], dest)
       ret << "<div class='quick-edit hide'>"
@@ -22,7 +22,7 @@ module Admin::ItemHelper
       ret << "</div>"
       ret << render_children(node)
       ret << "</li>"
-      ret << "</ul>" unless node.parent.nil?
+      # ret << "</ol>" unless node.parent.nil?
     end
     ret.html_safe
   end
@@ -31,13 +31,27 @@ module Admin::ItemHelper
     children = parent.ordered_children
     if !children.entries.blank?
       ret = ''
+      ret << "<ol class='#{'sortable' if parent.parent.nil?}'>"
       children.each do |child|
         ret << render_node_and_children(child)
       end
+      ret << '</ol>'
       ret
     else
       ''
     end
   end
   
-end
+end
+
+
+# <ol class="sortable">
+#   <li><div>Some content</div></li>
+#   <li><div>Some content</div>
+#     <ol>
+#       <li><div>Some sub-item content</div></li>
+#       <li><div>Some sub-item content</div></li>
+#     </ol>
+#   </li>
+#   <li><div>Some content</div></li>
+# </ol>

app/views/admin/items/_site_map_left_bar.html.erb

@@ -1 +1,28 @@
-<%= render_node_and_children(Item.first(:conditions => {:parent_id => nil})) %>
+<%= render_node_and_children(Item.first(:conditions => {:parent_id => nil})) %>
+
+
+<script>
+	$(document).ready(function(){
+		$('ol.sortable').nestedSortable({
+			disableNesting: 'no-nest',
+			forcePlaceholderSize: true,
+			handle: 'div',
+			helper:	'clone',
+			items: 'li',
+			maxLevels: 3,
+			opacity: .6,
+			placeholder: 'placeholder',
+			revert: 250,
+			tabSize: 25,
+			tolerance: 'pointer',
+			toleranceElement: '> div',
+
+			stop: function(event, ui) {
+				$.post("<%= admin_update_position_path %>", { id: ui.item.attr('id'), parent_id: ui.item.parent().closest('li').attr('id'), position: ui.item.index() } );
+        // console.log("parent: " + ui.item.parent().closest('li').attr('id'));
+        // console.log("id: " + ui.item.attr('id'));
+        // console.log("position: " + ui.item.index());
+    	}
+		});
+	});
+</script>

app/views/layouts/site_editor.html.erb

@@ -23,9 +23,9 @@
 		</div>
 		<div class="viewport">
 			<div id='back_sidebar' class="overview">
-				<ul class="nav nav-list">
+				<ol class="nav nav-list">
 					<%= yield :sidebar %>
-				</ul>
+				</ol>
 			</div>
 		</div>
 	</nav>

config/routes.rb

@@ -49,6 +49,7 @@ Orbit::Application.routes.draw do
       get 'add_attribute_field'
     end
     resources :items
+    match 'update_position' => 'items#update_position'
     resources :links do
       member do
         get 'delete'