feat(sortable): add workaround for horizontal lists

README.md

@@ -69,6 +69,41 @@ myAppModule.controller('MyController', function($scope) {
 When using event callbacks ([start](http://api.jqueryui.com/sortable/#event-start)/[update](http://api.jqueryui.com/sortable/#event-update)/[stop](http://api.jqueryui.com/sortable/#event-stop)...), avoid manipulating DOM elements (especially the one with the ng-repeat attached).
 The suggested pattern is to use callbacks for emmiting events and altering the scope (inside the 'Angular world').
 
+#### Floating
+
+To have a smooth horizontal-list reordering, jquery.ui.sortable needs to detect the orientation of the list.
+This detection takes place during the initialization of the plugin (and some of the checks include: whether the first item is floating left/right or if 'axis' parameter is 'x', etc).
+There is also a [known issue](bugs.jqueryui.com/ticket/7498) about initially empty horizontal lists.
+
+To provide a solution/workaround (till jquery.ui.sortable.refresh() also tests the orientation or a more appropriate method is provided), ui-sortable directive provides a `ui-floating` option as an extra to the [jquery.ui.sortable options](http://api.jqueryui.com/sortable/).
+
+```html
+<ul ui-sortable="{ 'ui-floating': true }" ng-model="items">
+  <li ng-repeat="item in items">{{ item }}</li>
+</ul>
+```
+
+**OR**
+
+```js
+$scope.sortableOptions = {
+  'ui-floating': true
+};
+```
+```html
+<ul ui-sortable="sortableOptions" ng-model="items">
+  <li ng-repeat="item in items">{{ item }}</li>
+</ul>
+```
+
+
+**ui-floating** (default: undefined)  
+Type: [Boolean](http://api.jquery.com/Types/#Boolean)/[String](http://api.jquery.com/Types/#String)/`undefined`
+*   **undefined**: Relies on jquery.ui to detect the list's orientation.
+*   **false**:     Forces jquery.ui.sortable to detect the list as vertical.
+*   **true**:      Forces jquery.ui.sortable to detect the list as horizontal.
+*   **"auto"**:    Detects on each drag `start` if the element is floating or not.
+
 #### Canceling
 
 Inside the `update` callback, you can check the item that is dragged and cancel the sorting.
@@ -138,6 +173,7 @@ For more details about the events check the [jQueryUI API documentation](http://
 - [Filtering](http://codepen.io/thgreasi/pen/mzGbq) ([details](https://github.com/angular-ui/ui-sortable/issues/113))
 - [Ordering 1](http://codepen.io/thgreasi/pen/iKEHd) & [Ordering 2](http://plnkr.co/edit/XPUzJjdvwE0QWQ6py6mQ?p=preview) ([details](https://github.com/angular-ui/ui-sortable/issues/70))
 - [Cloning](http://codepen.io/thgreasi/pen/qmvhG) ([details](https://github.com/angular-ui/ui-sortable/issues/139))
+- [Horizontal List](http://codepen.io/thgreasi/pen/wsfjD)
 - [Tree with dynamic template](http://codepen.io/thgreasi/pen/uyHFC)
 - Canceling
   - [Connected Lists With Max Size](http://codepen.io/thgreasi/pen/IdvFc)

src/sortable.js

@@ -28,8 +28,18 @@ angular.module('ui.sortable', [])
             return helperOption === 'clone' || (typeof helperOption === 'function' && ui.item.sortable.isCustomHelperUsed());
           }
 
+          // thanks jquery-ui
+          function isFloating (item) {
+            return (/left|right/).test(item.css('float')) || (/inline|table-cell/).test(item.css('display'));
+          }
+
           var opts = {};
 
+          // directive specific options
+          var directiveOpts = {
+            'ui-floating': undefined
+          };
+
           var callbacks = {
             receive: null,
             remove:null,
@@ -42,7 +52,7 @@ angular.module('ui.sortable', [])
             helper: null
           };
 
-          angular.extend(opts, uiSortableConfig, scope.$eval(attrs.uiSortable));
+          angular.extend(opts, directiveOpts, uiSortableConfig, scope.$eval(attrs.uiSortable));
 
           if (!angular.element.fn || !angular.element.fn.jquery) {
             $log.error('ui.sortable: jQuery should be included before AngularJS!');
@@ -65,6 +75,13 @@ angular.module('ui.sortable', [])
             });
 
             callbacks.start = function(e, ui) {
+              if (opts['ui-floating'] === 'auto') {
+                // since the drag has started, the element will be
+                // absolutely positioned, so we check its siblings
+                var siblings = ui.item.siblings();
+                angular.element(e.target).data('ui-sortable').floating = isFloating(siblings);
+              }
+
               // Save the starting position of dragged item
               ui.item.sortable = {
                 index: ui.item.index(),
@@ -228,7 +245,18 @@ angular.module('ui.sortable', [])
               // is still bound to the directive's element
               if (!!element.data('ui-sortable')) {
                 angular.forEach(newVal, function(value, key) {
-                  if(callbacks[key]) {
+                  // if it's a custom option of the directive,
+                  // handle it approprietly
+                  if (key in directiveOpts) {
+                    if (key === 'ui-floating' && (value === false || value === true)) {
+                      element.data('ui-sortable').floating = value;
+                    }
+
+                    opts[key] = value;
+                    return;
+                  }
+
+                  if (callbacks[key]) {
                     if( key === 'stop' ){
                       // call apply after stop
                       value = combineCallbacks(
@@ -240,6 +268,7 @@ angular.module('ui.sortable', [])
                     value = wrappers[key](value);
                   }
 
+                  opts[key] = value;
                   element.sortable('option', key, value);
                 });
               }

test/sortable.e2e.directiveoptions.spec.js

@@ -0,0 +1,172 @@
+'use strict';
+
+describe('uiSortable', function() {
+
+  // Ensure the sortable angular module is loaded
+  beforeEach(module('ui.sortable'));
+  beforeEach(module('ui.sortable.testHelper'));
+
+  var EXTRA_DY_PERCENTAGE, listContent;
+
+  beforeEach(inject(function (sortableTestHelper) {
+    EXTRA_DY_PERCENTAGE = sortableTestHelper.EXTRA_DY_PERCENTAGE;
+    listContent = sortableTestHelper.listContent;
+  }));
+
+  describe('Custom directive options related', function() {
+
+    var host;
+
+    beforeEach(inject(function() {
+      host = $('<div id="test-host"></div>');
+      $('body').append(host);
+    }));
+
+    afterEach(function() {
+      host.remove();
+      host = null;
+    });
+
+    it('should work when "ui-floating: false" option is used', function() {
+      inject(function($compile, $rootScope) {
+        var element;
+        element = $compile('<ul ui-sortable="opts" ng-model="items"><li ng-repeat="item in items" id="s-{{$index}}" class="sortable-item">{{ item }}</li></ul>')($rootScope);
+        $rootScope.$apply(function() {
+          $rootScope.opts = {
+            'ui-floating': false
+          };
+          $rootScope.items = ['One', 'Two', 'Three'];
+        });
+
+        host.append(element);
+
+        var li = element.find(':eq(0)');
+        var dy = (1 + EXTRA_DY_PERCENTAGE) * li.outerHeight();
+        li.simulate('drag', { dy: dy });
+        expect($rootScope.items).toEqual(['Two', 'One', 'Three']);
+        expect($rootScope.items).toEqual(listContent(element));
+
+        li = element.find(':eq(1)');
+        dy = (1 + EXTRA_DY_PERCENTAGE) * li.outerHeight();
+        li.simulate('drag', { dy: dy });
+        expect($rootScope.items).toEqual(['Two', 'Three', 'One']);
+        expect($rootScope.items).toEqual(listContent(element));
+
+        li = element.find(':eq(1)');
+        dy = (1 + EXTRA_DY_PERCENTAGE) * li.outerHeight();
+        li.simulate('drag', { dy: dy });
+        expect($rootScope.items).toEqual(['Two', 'One', 'Three']);
+        expect($rootScope.items).toEqual(listContent(element));
+
+        $(element).remove();
+      });
+    });
+
+    it('should work when "ui-floating: true" option is used', function() {
+      inject(function($compile, $rootScope) {
+        var element;
+        element = $compile('<ul ui-sortable="opts" ng-model="items"><li class="floatleft" ng-repeat="item in items" id="s-{{$index}}" class="sortable-item">{{ item }}</li></ul>')($rootScope);
+        $rootScope.$apply(function() {
+          $rootScope.opts = {
+            'ui-floating': true
+          };
+          $rootScope.items = ['One', 'Two', 'Three'];
+        });
+
+        host.append(element).append('<div class="clear"></div>');
+
+        var li = element.find(':eq(0)');
+        var dx = (1 + EXTRA_DY_PERCENTAGE) * li.outerWidth();
+        li.simulate('drag', { dx: dx });
+        expect($rootScope.items).toEqual(['Two', 'One', 'Three']);
+        expect($rootScope.items).toEqual(listContent(element));
+
+        li = element.find(':eq(1)');
+        dx = (1 + EXTRA_DY_PERCENTAGE) * li.outerWidth();
+        li.simulate('drag', { dx: dx });
+        expect($rootScope.items).toEqual(['Two', 'Three', 'One']);
+        expect($rootScope.items).toEqual(listContent(element));
+
+        li = element.find(':eq(1)');
+        dx = (1 + EXTRA_DY_PERCENTAGE) * li.outerWidth();
+        li.simulate('drag', { dx: dx, moves: 5 });
+        expect($rootScope.items).toEqual(['Two', 'One', 'Three']);
+        expect($rootScope.items).toEqual(listContent(element));
+
+        $(element).remove();
+      });
+    });
+
+    it('should work when "ui-floating: \'auto\'" option is used and elements are "float"ing', function() {
+      inject(function($compile, $rootScope) {
+        var element;
+        element = $compile('<ul ui-sortable="opts" ng-model="items"><li class="floatleft" ng-repeat="item in items" id="s-{{$index}}" class="sortable-item">{{ item }}</li></ul>')($rootScope);
+        $rootScope.$apply(function() {
+          $rootScope.opts = {
+            'ui-floating': 'auto'
+          };
+          $rootScope.items = ['One', 'Two', 'Three'];
+        });
+
+        host.append(element).append('<div class="clear"></div>');
+
+        var li = element.find(':eq(0)');
+        var dx = (1 + EXTRA_DY_PERCENTAGE) * li.outerWidth();
+        li.simulate('drag', { dx: dx });
+        expect($rootScope.items).toEqual(['Two', 'One', 'Three']);
+        expect($rootScope.items).toEqual(listContent(element));
+
+        li = element.find(':eq(1)');
+        dx = (1 + EXTRA_DY_PERCENTAGE) * li.outerWidth();
+        li.simulate('drag', { dx: dx });
+        expect($rootScope.items).toEqual(['Two', 'Three', 'One']);
+        expect($rootScope.items).toEqual(listContent(element));
+
+        li = element.find(':eq(1)');
+        dx = (1 + EXTRA_DY_PERCENTAGE) * li.outerWidth();
+        li.simulate('drag', { dx: dx, moves: 5 });
+        expect($rootScope.items).toEqual(['Two', 'One', 'Three']);
+        expect($rootScope.items).toEqual(listContent(element));
+
+        $(element).remove();
+      });
+    });
+
+    it('should work when "ui-floating: \'auto\'" option is used and elements are "display: inline-block"', function() {
+      inject(function($compile, $rootScope) {
+        var element;
+        element = $compile('<ul ui-sortable="opts" ng-model="items"><li class="inline-block" ng-repeat="item in items" id="s-{{$index}}" class="sortable-item">{{ item }}</li></ul>')($rootScope);
+        $rootScope.$apply(function() {
+          $rootScope.opts = {
+            'ui-floating': 'auto'
+          };
+          $rootScope.items = ['One', 'Two', 'Three'];
+        });
+
+        host.append(element);
+
+        var li = element.find(':eq(0)');
+        var dx = (1 + EXTRA_DY_PERCENTAGE) * li.outerWidth();
+        li.simulate('drag', { dx: dx });
+        expect($rootScope.items).toEqual(['Two', 'One', 'Three']);
+        expect($rootScope.items).toEqual(listContent(element));
+
+        li = element.find(':eq(1)');
+        dx = (1 + EXTRA_DY_PERCENTAGE) * li.outerWidth();
+        li.simulate('drag', { dx: dx });
+        expect($rootScope.items).toEqual(['Two', 'Three', 'One']);
+        expect($rootScope.items).toEqual(listContent(element));
+
+        li = element.find(':eq(1)');
+        dx = (1 + EXTRA_DY_PERCENTAGE) * li.outerWidth();
+        li.simulate('drag', { dx: dx, moves: 5 });
+        expect($rootScope.items).toEqual(['Two', 'One', 'Three']);
+        expect($rootScope.items).toEqual(listContent(element));
+
+        $(element).remove();
+      });
+    });
+
+  });
+
+});

test/sortable.tests.css

@@ -1,3 +1,8 @@
+.inline-block {
+	display: inline-block;
+}
+
+.floatleft,
 .cross-sortable {
 	float: left;
 }