Chapter 21 Flashcards

1
Q

What are input events

A

Events coming from keyboard, stylus, multi touch screen

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2
Q

What are routed events

A

A routed event is a type of event that can invoke handlers on multiple listeners in an element tree, rather than just on the object that raised the event.

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3
Q

What are 2 types of elements tree

A
  1. Logical element tree

2. Visual element tree

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4
Q

What are 3 routing strategies of routed events

A
  1. Bubbling: Event handlers on the event source are invoked. Events handlers starts from the source until the root
  2. Tunneling: Initially, event handlers at the element tree root are invoked. Event moves from top to bottom. It is reverse of bubble.
  3. Direct: Event is only intended to the element and that’s it.
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5
Q

What is the purpose of handler mark

A

It means there is no need to further process it.

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