sirgl / reactive-swing

An attempt to make React-like framework for Swing

Reactive swing library

An attempt to make library to create UI in Swing easily using virtual DOM. Inspired by React/JS.

Example:

class ExampleComponent(props: ExampleProps, kit: UiKit) : StatefulComponent<ExampleProps, Int>(props, 2, kit) {
    private fun handleAdd() {
        setState { state + 1 }
    }

    private fun handleRemove() {
        setState { state - 1 }
    }

    override fun RenderContext.render() {
        box {
            label("Total: $state")
            box {
                for (i in 0 until state) {
                    label(i.toString())
                }
            }
            button("add", onClick = ::handleAdd)
            button("remove", onClick = ::handleRemove)
        }
    }
}

Library mostly not bound to Swing, so theoretically it is possible to utilize other rendering backends (e. g. DOM).

Things that work:

• Basic reconciliation
• Changes detection for VM (using cells and read tracking)
• Basic primitives

TODO:

• Input field
• Placement/Alignment strategies
• Horizontal box
• Component size management
• Custom reconciliations
• Keys to help reconciliation
• Batch updates
• More fine-grained change detection
• Stop recomputation calculation when results are equal
• ...