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package ui
import (
"fmt"
"git.sr.ht/~rjarry/aerc/config"
"git.sr.ht/~rockorager/vaxis"
)
type Stack struct {
children []Drawable
uiConfig *config.UIConfig
}
func NewStack(uiConfig *config.UIConfig) *Stack {
return &Stack{uiConfig: uiConfig}
}
func (stack *Stack) Children() []Drawable {
return stack.children
}
func (stack *Stack) Invalidate() {
Invalidate()
}
func (stack *Stack) Draw(ctx *Context) {
if len(stack.children) > 0 {
stack.Peek().Draw(ctx)
} else {
ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ',
stack.uiConfig.GetStyle(config.STYLE_STACK))
}
}
func (stack *Stack) MouseEvent(localX int, localY int, event vaxis.Event) {
if len(stack.children) > 0 {
if element, ok := stack.Peek().(Mouseable); ok {
element.MouseEvent(localX, localY, event)
}
}
}
func (stack *Stack) Push(d Drawable) {
stack.children = append(stack.children, d)
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()
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]
}
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