114 lines
3.4 KiB
Rust
114 lines
3.4 KiB
Rust
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use gtk4::{prelude::*, Align, Label, Orientation, Widget};
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use relm4::{ComponentParts, Sender, SimpleComponent};
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#[derive(Debug)]
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pub enum LabeledItemMessage {
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Title(String),
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Desc(Option<String>),
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Align(Align),
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Child(Widget),
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}
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#[track]
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struct LabeledItem {
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title: String,
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desc: Option<String>,
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align: Align,
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child: Option<Widget>,
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}
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#[component]
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impl SimpleComponent for LabeledItem {
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type Widgets = AppWidgets;
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type InitParams = ();
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type Input = LabeledItemMessage;
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type Output = ();
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view! {
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base_box = gtk4::Box {
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add_css_class: "labeled-item",
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set_orientation: Orientation::Horizontal,
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set_hexpand: true,
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set_margin_start: 24,
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set_margin_end: 24,
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set_margin_top: 8,
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set_margin_bottom: 8,
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set_spacing: 16,
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append: labeled_item_info = >k4::Box {
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add_css_class: "labeled-item-info",
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set_orientation: Orientation::Vertical,
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set_hexpand: true,
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set_spacing: 8,
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set_valign: Align::Center,
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&Label {
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add_css_class: "labeled-item-title",
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set_halign: Align::Start,
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set_label: watch! { &model.title }
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},
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&Label {
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add_css_class: "labeled-item-desc",
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set_halign: Align::Start,
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set_visible: watch! { model.desc.is_some() },
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set_label: watch! { &model.desc.clone().unwrap_or_default() }
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},
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}
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}
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}
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fn init_parts(
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_init_params: Self::InitParams,
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root: &Self::Root,
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_input: &Sender<Self::Input>,
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_output: &Sender<Self::Output>,
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) -> ComponentParts<Self, Self::Widgets> {
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let model = LabeledItem {
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title: String::default(),
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desc: None,
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align: Align::Start,
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child: None,
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tracker: 0,
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};
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let widgets = view_output!();
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ComponentParts { model, widgets }
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}
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fn update(
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&mut self,
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msg: Self::Input,
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_input: &Sender<Self::Input>,
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_ouput: &Sender<Self::Output>,
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) {
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self.reset();
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match msg {
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LabeledItemMessage::Title(title) => self.set_title(title),
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LabeledItemMessage::Desc(desc) => self.set_desc(desc),
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LabeledItemMessage::Align(align) => self.set_align(align),
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LabeledItemMessage::Child(child) => self.set_child(Some(child)),
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}
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}
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fn post_view() {
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if self.changed(LabeledItem::child()) {
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let child = self.child.as_ref().expect("there's no child??");
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widgets.base_box.append(child);
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}
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if self.changed(LabeledItem::align()) {
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let child = self.child.as_ref().expect("set alignment without child");
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match self.align {
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Align::Start => {
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widgets
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.base_box
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.reorder_child_after(&widgets.labeled_item_info, Some(child));
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}
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Align::End => {
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widgets
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.base_box
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.reorder_child_after(child, Some(&widgets.labeled_item_info));
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}
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_ => unimplemented!(),
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}
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}
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}
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}
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