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use gtk::prelude::*;
use relm4::{prelude::*, Sender};
struct Dialog {
buffer: gtk::EntryBuffer,
}
#[derive(Debug)]
enum DialogMsg {
Accept,
Cancel,
}
#[relm4::component]
impl SimpleComponent for Dialog {
type Init = ();
type Input = DialogMsg;
type Output = String;
type Widgets = DialogWidgets;
view! {
#[root]
dialog = gtk::MessageDialog {
set_margin_all: 12,
set_modal: true,
set_text: Some("Enter a search query"),
add_button: ("Search", gtk::ResponseType::Accept),
present: (),
connect_response[sender] => move |dialog, resp| {
dialog.hide();
sender.input(if resp == gtk::ResponseType::Accept {
DialogMsg::Accept
} else {
DialogMsg::Cancel
});
}
},
dialog.content_area() -> gtk::Box {
gtk::Entry {
set_buffer: &model.buffer,
}
}
}
fn init(
_: Self::Init,
root: &Self::Root,
sender: ComponentSender<Self>,
) -> ComponentParts<Self> {
let model = Dialog {
buffer: gtk::EntryBuffer::new(None),
};
let widgets = view_output!();
ComponentParts { model, widgets }
}
fn update(&mut self, msg: Self::Input, sender: ComponentSender<Self>) {
match msg {
DialogMsg::Accept => {
sender.output(self.buffer.text()).unwrap();
}
DialogMsg::Cancel => {
sender.output(String::default()).unwrap();
}
}
}
fn shutdown(&mut self, _widgets: &mut Self::Widgets, _output: Sender<Self::Output>) {
println!("Dialog shutdown");
}
}
#[derive(Debug)]
enum AppMsg {
StartSearch,
}
struct App {
result: Option<String>,
searching: bool,
}
#[relm4::component]
impl Component for App {
type Init = ();
type Input = AppMsg;
type Output = ();
type Widgets = AppWidgets;
type CommandOutput = Option<String>;
view! {
main_window = gtk::ApplicationWindow {
set_default_size: (300, 100),
gtk::Box {
set_orientation: gtk::Orientation::Vertical,
set_margin_all: 12,
set_spacing: 12,
if let Some(result) = &model.result {
gtk::LinkButton {
set_label: "Your search result",
#[watch]
set_uri: result,
}
} else {
gtk::Label {
set_label: "Click the button to start a web-search"
}
},
gtk::Button {
set_label: "Start search",
connect_clicked => AppMsg::StartSearch,
#[watch]
set_sensitive: !model.searching,
}
}
}
}
fn init(
_: Self::Init,
root: &Self::Root,
_sender: ComponentSender<Self>,
) -> ComponentParts<Self> {
let model = App {
result: None,
searching: false,
};
let widgets = view_output!();
ComponentParts { model, widgets }
}
fn update(&mut self, msg: Self::Input, sender: ComponentSender<Self>, root: &Self::Root) {
match msg {
AppMsg::StartSearch => {
self.searching = true;
let stream = Dialog::builder()
.transient_for(root)
.launch(())
.into_stream();
sender.oneshot_command(async move {
let result = stream.recv_one().await;
if let Some(search) = result {
let response =
reqwest::get(format!("https://duckduckgo.com/lite/?q={search}"))
.await
.unwrap();
let response_text = response.text().await.unwrap();
if let Some(url) = response_text.split("<a rel=\"nofollow\" href=\"").nth(1)
{
let url = url.split('\"').next().unwrap().replace("amp;", "");
Some(format!("https:{url}"))
} else {
None
}
} else {
None
}
});
}
}
}
fn update_cmd(
&mut self,
message: Self::CommandOutput,
_sender: ComponentSender<Self>,
_root: &Self::Root,
) {
self.searching = false;
self.result = message;
}
}
fn main() {
let app = RelmApp::new("relm4.example.message_stream");
app.run::<App>(());
}