Struct scl_gui_widgets::widgets::OnCmd

pub struct OnCmd<CT, WT> { /* private fields */ }

一个控制器，当接收到特定的 [druid::Command] 时触发回调

推荐使用 crate::widget_ext::WidgetExt::on_command 来创建本控制器于一个组件上

Implementations

impl<CT, WT> OnCmd<CT, WT>

pub fn new( selector: Selector<CT>, handler: impl Fn(&mut EventCtx<'_, '_>, &CT, &mut WT) + 'static ) -> Self

根据所给指令 [druid::Command] 和回调创建此控制器

推荐使用 crate::widget_ext::WidgetExt::on_command 来创建本控制器于一个组件上

Trait Implementations

impl<WT: Data, W: Widget<WT>, CT: 'static> Controller<WT, W> for OnCmd<CT, WT>

fn event( &mut self, child: &mut W, ctx: &mut EventCtx<'_, '_>, event: &Event, data: &mut WT, env: &Env )

Analogous to [Widget::event].

fn lifecycle( &mut self, child: &mut W, ctx: &mut LifeCycleCtx<'_, '_>, event: &LifeCycle, data: &T, env: &Env )

Analogous to [Widget::lifecycle].

fn update( &mut self, child: &mut W, ctx: &mut UpdateCtx<'_, '_>, old_data: &T, data: &T, env: &Env )

Analogous to [Widget::update].