Renderable (wear-services 1.0.0 API)

```
public interface Renderable
```
Represents a UI that can be rendered on a graphics context and that can be shown on the display.
The methods of a renderable are called in the following order:
1. one call to onAttached()
2. any number of calls to render(ej.microui.display.GraphicsContext)
3. one optional call to showOnDisplay()
4. one call to onDetached()

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onAttached()`	Called when this instance is scheduled for imminent rendering.
`void`	`onDetached()`	Called when this instance is no longer scheduled for imminent rendering.
`void`	`render(ej.microui.display.GraphicsContext g)`	Renders this instance on the given graphics context.
`void`	`showOnDisplay()`	Shows this instance on the display.

- Method Detail
  - onAttached
```
void onAttached()
```
    Called when this instance is scheduled for imminent rendering.
    For example, this method can load the resources necessary for rendering.
  - onDetached
```
void onDetached()
```
    Called when this instance is no longer scheduled for imminent rendering.
    For example, this method can dispose the resources loaded in onAttached().
  - render
```
void render(ej.microui.display.GraphicsContext g)
```
    Renders this instance on the given graphics context.
    This method applies the translation and clip set in the given graphics context (it should not reset the translation and clip before drawing).
    
    Parameters:
    
    g - the graphics context to draw with.
  - showOnDisplay
```
void showOnDisplay()
```
    Shows this instance on the display.
    Once the displayable is shown on the display, it can start animations and handle events. Once it is hidden (due to an other displayable being shown), it can stop the started animations and dispose the resources loaded in onAttached().