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
