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use description_item;
use gtk::{ListBoxExt, ListBoxRowExt};
use indexmap::IndexMap;
use relm::{Component, ContainerWidget, Relm, Update, Widget};
use uuid::Uuid;
#[derive(Debug, Clone)]
pub struct Param {
pub items: IndexMap<Uuid, description_item::Item>,
}
#[derive(Msg, Debug)]
pub enum Msg {
Incoming(Incoming),
Internal(Internal),
Outgoing(Outgoing),
}
#[derive(Debug)]
pub struct Incoming {
pub msg: IncomingMsg,
}
#[derive(Debug)]
pub enum IncomingMsg {
Update(IndexMap<Uuid, description_item::Item>),
}
impl From<IncomingMsg> for Msg {
fn from(msg: IncomingMsg) -> Msg {
Msg::Incoming(Incoming { msg })
}
}
#[derive(Debug)]
pub struct Internal {
msg: InternalMsg,
}
#[derive(Debug)]
enum InternalMsg {
RowActivated(usize),
}
impl From<InternalMsg> for Msg {
fn from(msg: InternalMsg) -> Msg {
Msg::Internal(Internal { msg })
}
}
#[derive(Debug)]
pub struct Outgoing {
pub msg: OutgoingMsg,
}
#[derive(Debug, Clone)]
pub enum OutgoingMsg {
ItemActivated(Uuid),
}
impl From<OutgoingMsg> for Msg {
fn from(msg: OutgoingMsg) -> Msg {
Msg::Outgoing(Outgoing { msg })
}
}
impl Update for W {
type Model = Param;
type ModelParam = Param;
type Msg = Msg;
fn model(_relm: &Relm<Self>, details: Param) -> Self::Model {
details
}
fn update(&mut self, event: Msg) {
use self::Msg::*;
match event {
Incoming(e) => self.update_incoming(e.msg),
Internal(e) => self.update_internal(e.msg),
Outgoing(_) => {}
}
}
}
impl W {
fn update_incoming(&mut self, e: IncomingMsg) {
use self::IncomingMsg::*;
match e {
Update(items) => {
Self::build_widgets(
items,
&mut self.root,
&mut self.components,
);
}
}
}
fn update_internal(&mut self, e: InternalMsg) {
use self::InternalMsg::*;
match e {
RowActivated(index) => {
let uuid = self.components.get_index(index).unwrap().0;
self.relm
.stream()
.emit(Msg::from(OutgoingMsg::ItemActivated(*uuid)));
}
}
}
fn build_widgets(
items: IndexMap<Uuid, description_item::Item>,
root: &mut gtk::ListBox,
components: &mut IndexMap<Uuid, Component<description_item::W>>,
) {
use gtk::ContainerExt;
root.foreach(|child| root.remove(child));
components.clear();
*components = items
.into_iter()
.map(|(uuid, item)| {
(
uuid,
root.add_widget::<description_item::W>(
description_item::Param { item },
),
)
})
.collect();
use gtk::WidgetExt;
root.show_all();
}
}
impl Widget for W {
type Root = gtk::ListBox;
fn root(&self) -> Self::Root {
self.root.clone()
}
fn view(relm: &Relm<Self>, model: Self::Model) -> Self {
let mut root = gtk::ListBoxBuilder::new()
.selection_mode(gtk::SelectionMode::None)
.build();
let mut components = IndexMap::new();
Self::build_widgets(model.items, &mut root, &mut components);
connect!(
relm,
root,
connect_row_activated(_, row),
Msg::from(InternalMsg::RowActivated(row.get_index() as usize))
);
W {
relm: relm.clone(),
root,
components,
}
}
}
pub struct W {
relm: Relm<W>,
root: gtk::ListBox,
components: IndexMap<Uuid, Component<description_item::W>>,
}