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/*
* Copyright (c) 2017 Boucher, Antoni <bouanto@zoho.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
extern crate gtk;
#[macro_use]
extern crate relm;
#[macro_use]
extern crate relm_derive;
#[cfg_attr(test, macro_use)]
extern crate gtk_test;
use gtk::{
Button,
ButtonExt,
ContainerExt,
Inhibit,
Label,
LabelExt,
WidgetExt,
Window,
WindowType,
};
use gtk::Orientation::Vertical;
use relm::{Relm, Update, Widget, WidgetTest};
struct Model {
counter: i32,
}
#[derive(Msg)]
enum Msg {
Decrement,
Increment,
Quit,
}
// Create the structure that holds the widgets used in the view.
#[derive(Clone)]
struct Widgets {
counter_label: Label,
minus_button: Button,
plus_button: Button,
window: Window,
}
struct Win {
model: Model,
widgets: Widgets,
}
impl Update for Win {
// Specify the model used for this widget.
type Model = Model;
// Specify the model parameter used to init the model.
type ModelParam = ();
// Specify the type of the messages sent to the update function.
type Msg = Msg;
fn model(_: &Relm<Self>, _: ()) -> Model {
Model {
counter: 0,
}
}
fn update(&mut self, event: Msg) {
let label = &self.widgets.counter_label;
match event {
Msg::Decrement => {
self.model.counter -= 1;
// Manually update the view.
label.set_text(&self.model.counter.to_string());
},
Msg::Increment => {
self.model.counter += 1;
label.set_text(&self.model.counter.to_string());
},
Msg::Quit => gtk::main_quit(),
}
}
}
impl Widget for Win {
// Specify the type of the root widget.
type Root = Window;
// Return the root widget.
fn root(&self) -> Self::Root {
self.widgets.window.clone()
}
fn view(relm: &Relm<Self>, model: Self::Model) -> Self {
// Create the view using the normal GTK+ method calls.
let vbox = gtk::Box::new(Vertical, 0);
let plus_button = Button::new_with_label("+");
vbox.add(&plus_button);
let counter_label = Label::new("0");
vbox.add(&counter_label);
let minus_button = Button::new_with_label("-");
vbox.add(&minus_button);
let window = Window::new(WindowType::Toplevel);
window.add(&vbox);
window.show_all();
// Send the message Increment when the button is clicked.
connect!(relm, plus_button, connect_clicked(_), Msg::Increment);
connect!(relm, minus_button, connect_clicked(_), Msg::Decrement);
connect!(relm, window, connect_delete_event(_, _), return (Some(Msg::Quit), Inhibit(false)));
Win {
model,
widgets: Widgets {
counter_label,
minus_button,
plus_button,
window: window,
},
}
}
}
impl WidgetTest for Win {
type Widgets = Widgets;
fn get_widgets(&self) -> Self::Widgets {
self.widgets.clone()
}
}
fn main() {
Win::run(()).expect("Win::run failed");
}
#[cfg(test)]
mod tests {
use gtk::LabelExt;
use relm;
use gtk_test::click;
use Win;
#[test]
fn label_change() {
let (_component, widgets) = relm::init_test::<Win>(()).expect("init_test failed");
let plus_button = &widgets.plus_button;
let minus_button = &widgets.minus_button;
let label = &widgets.counter_label;
assert_text!(label, 0);
click(plus_button);
assert_text!(label, 1);
click(plus_button);
assert_text!(label, 2);
click(plus_button);
assert_text!(label, 3);
click(plus_button);
assert_text!(label, 4);
click(minus_button);
assert_text!(label, 3);
click(minus_button);
assert_text!(label, 2);
click(minus_button);
assert_text!(label, 1);
click(minus_button);
assert_text!(label, 0);
click(minus_button);
assert_text!(label, -1);
}
}