doodle/lib/ui/dragdrop.go

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package ui
// DragDrop is a state machine to manage draggable UI components.
type DragDrop struct {
isDragging bool
}
// NewDragDrop initializes the DragDrop struct. Normally your Supervisor
// will manage the drag/drop object, but you can use your own if you don't
// use a Supervisor.
func NewDragDrop() *DragDrop {
return &DragDrop{}
}
// IsDragging returns whether the drag state is active.
func (dd *DragDrop) IsDragging() bool {
return dd.isDragging
}
// Start the drag state.
func (dd *DragDrop) Start() {
dd.isDragging = true
}
// Stop dragging.
func (dd *DragDrop) Stop() {
dd.isDragging = false
}