Reuse hotkeys

[kayvanbree]

For now it's only possible to add one hotkey per application. The users of this library should be able to add a hotkey in the context of a component.

Use case:

• A user has selected an item of a list (by clicking or right-clicking)
• The user uses the hotkey 'del'
• The hotkey deletes the item from the list

Use case 2:

• There are two lists on the page
• A user clicks somewhere in list 1
• The user uses the hotkey 'insert'
• The hotkey adds an item to list 1, not list 2

Current behavior

When the same hotkey is registered twice, only the last registered hotkey will work.

Expected behavior

You should be able to register a hotkey within a component. The hotkey will only fire if an HTML element with that context or a child of that element is clicked.

[kayvanbree]

We can track the last clicked/right-clicked context, every element that has the ctx directive. The directive will have a unique identifier using Symbol. The ContexrService keeps a list of contexts. If we give that list of context a unique object, we know which of those actions to perform. Then we call the corresponding action.

The directive should be a unique object.

[kayvanbree]

Now possible to use hotkeys on a per context basis in develop