package ui import ( "fmt" "git.sr.ht/~rjarry/aerc/config" "github.com/gdamore/tcell/v2" ) 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 tcell.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] }