descrip.mms


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generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-12-11 08:44:52 +0000
 

pan class="p">}
}

func (stack *Stack) Push(d Drawable) {
	if len(stack.children) != 0 {
		stack.Peek().OnInvalidate(nil)
	}
	stack.children = append(stack.children, d)
	d.OnInvalidate(stack.invalidateFromChild)
	stack.Invalidate()
}

func (stack *Stack) Pop() Drawable {
	if len(stack.children) == 0 {
		panic(fmt.Errorf("Tried to pop from an empty UI stack"))
	}
	d := stack.children[len(stack.children)-1]
	stack.children = stack.children[:len(stack.children)-1]
	stack.Invalidate()
	d.OnInvalidate(nil)
	if len(stack.children) != 0 {
		stack.Peek().OnInvalidate(stack.invalidateFromChild)
	}
	return d
}

func (stack *Stack) Peek() Drawable {
	if len(stack.children) == 0 {
		panic(fmt.Errorf("Tried to peek from an empty stack"))
	}
	return stack.children[len(stack.children)-1]
}

func (stack *Stack) invalidateFromChild(d Drawable) {
	stack.Invalidate()
}