[Layout] Support sub-object selection in layout (#1811)

Updates to sub object selection, first cut of selection APIs.

* [API] Add inspector view registry to register inspector view providers and show a view in the inspector.

[API] Modify the selection API to register the click event and handle the event. The API will add a class to the selected object and the immediate parent of the selected object.

[Directive] Implemenet mct-selectable directive for making an element selectable.

[Layout] Update the layout controller to use the Selection API. Also, add double click gesture to allow drilling into a selected object.

Populate the Elements pool with contained elements of the selected object. Update toolbar and inspector to listen for the changes in selection.

* [Frontend] Mods to markup and CSS for sub-object selection

* MCTSelectable allows selection in initialization, use to select on navigation

[Frontend] Show grid in first nested layout, hide from deeper nesting. Only show grids when applicable to relative selection.

* Fix checkstyle and lint errors

* Bring back the change that made mct-init-select work

* [Inspector] Make sure the right content is displayed based on whether a view provider exists or not.

* Only show table options when editing

* Make reviewers' requested changes

* Fix broken tests

* [Frontend] Cleanups and tweaks

Fixes #1811
- Cleanups between frame, editor and selecting.scss;
- Hover and selected borders visually pumped up a bit;
- Solid borders on hover and selecting when browsing;
- Dashed borders for layouts when editing;
- Fixed cursor to only show move capability when
element is selected;

* [Frontend] Tweaks to frame.no-frame layout

Fixes #1811
- Margin set to 0;
- Overflow set to hidden;

* [Frontend] Fixed position items border width fixed

Fixes #1811
- Set to 1px;

* Add tests for inspector controller and fix broken tests. Clean up code.

* [Fixed Position] Stop event propagation on click handlers in fixed position to avoid the event reaching the selection click handlers which caused issues with toolbar and selection."

* Fix tests

* Add tests

* Add test

* Remove element from document

platform/commonUI/general/src/controllers/ObjectInspectorController.js

@@ -40,7 +40,7 @@ define(
 
             // Gets an array of the contextual parents/ancestors of the selected object
             function getContextualPath() {
-                var currentObj = $scope.ngModel.selectedObject,
+                var currentObj = $scope.domainObject,
                     currentParent,
                     parents = [];
 
@@ -68,7 +68,7 @@ define(
 
                 // If this the the initial call of this recursive function
                 if (!current) {
-                    current = $scope.ngModel.selectedObject;
+                    current = $scope.domainObject;
                     $scope.primaryParents = [];
                 }
 
@@ -87,16 +87,16 @@ define(
 
             // Gets the metadata for the selected object
             function getMetadata() {
-                $scope.metadata = $scope.ngModel.selectedObject &&
-                    $scope.ngModel.selectedObject.hasCapability('metadata') &&
-                    $scope.ngModel.selectedObject.useCapability('metadata');
+                $scope.metadata = $scope.domainObject &&
+                    $scope.domainObject.hasCapability('metadata') &&
+                    $scope.domainObject.useCapability('metadata');
             }
 
             // Set scope variables when the selected object changes
-            $scope.$watch('ngModel.selectedObject', function () {
-                $scope.isLink = $scope.ngModel.selectedObject &&
-                    $scope.ngModel.selectedObject.hasCapability('location') &&
-                    $scope.ngModel.selectedObject.getCapability('location').isLink();
+            $scope.$watch('domainObject', function () {
+                $scope.isLink = $scope.domainObject &&
+                    $scope.domainObject.hasCapability('location') &&
+                    $scope.domainObject.getCapability('location').isLink();
 
                 if ($scope.isLink) {
                     getPrimaryPath();
@@ -109,7 +109,7 @@ define(
                 getMetadata();
             });
 
-            var mutation = $scope.ngModel.selectedObject.getCapability('mutation');
+            var mutation = $scope.domainObject.getCapability('mutation');
             var unlisten = mutation.listen(getMetadata);
             $scope.$on('$destroy', unlisten);
         }