Add support for generic widget

Author: antoyo

examples/generic-widget-attribute.rs

@@ -0,0 +1,141 @@
+/*
+ * 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.
+ */
+
+#![feature(proc_macro)]
+
+extern crate gtk;
+#[macro_use]
+extern crate relm;
+extern crate relm_attributes;
+#[macro_use]
+extern crate relm_derive;
+
+use std::fmt::Display;
+
+use gtk::{
+    ButtonExt,
+    Inhibit,
+    OrientableExt,
+    WidgetExt,
+};
+use gtk::Orientation::{Horizontal, Vertical};
+use relm::Widget;
+use relm_attributes::widget;
+
+use self::CounterMsg::*;
+use self::Msg::*;
+
+pub trait IncDec {
+    fn dec(&self) -> Self;
+    fn inc(&self) -> Self;
+}
+
+impl IncDec for i32 {
+    fn dec(&self) -> Self {
+        *self - 1
+    }
+
+    fn inc(&self) -> Self {
+        *self + 1
+    }
+}
+
+#[derive(Clone)]
+pub struct Model<T> {
+    counter: T,
+}
+
+#[derive(Msg)]
+pub enum CounterMsg {
+    Decrement,
+    Increment,
+}
+
+#[widget]
+impl<T: Clone + IncDec + Display> Widget for Counter<T> {
+    fn model(value: T) -> Model<T> {
+        Model {
+            counter: value,
+        }
+    }
+
+    fn update(&mut self, event: CounterMsg, model: &mut Self::Model) {
+        match event {
+            Decrement => {
+                model.counter = model.counter.dec();
+            },
+            Increment => {
+                model.counter = model.counter.inc();
+            },
+        }
+    }
+
+    view! {
+        gtk::Box {
+            orientation: Vertical,
+            gtk::Button {
+                label: "+",
+                clicked => Increment,
+            },
+            gtk::Label {
+                text: &model.counter.to_string(),
+                //let counter_label = Label::new(Some(model.counter.to_string().as_ref()));
+            },
+            gtk::Button {
+                label: "-",
+                clicked => Decrement,
+            },
+        }
+    }
+}
+
+#[derive(Msg)]
+pub enum Msg {
+    Quit,
+}
+
+#[widget]
+impl Widget for Win {
+    fn model(_: ()) -> () {
+        ()
+    }
+
+    fn update(&mut self, event: Msg, _model: &mut ()) {
+        match event {
+            Quit => gtk::main_quit(),
+        }
+    }
+
+    view! {
+        gtk::Window {
+            gtk::Box {
+                orientation: Horizontal,
+                Counter<i32>(2),
+                Counter<i32>(3),
+            },
+            delete_event(_, _) => (Quit, Inhibit(false)),
+        }
+    }
+}
+
+fn main() {
+    Win::run(()).unwrap();
+}

examples/generic-widget.rs

@@ -0,0 +1,189 @@
+/*
+ * 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;
+
+use std::fmt::Display;
+use std::marker::PhantomData;
+
+use gtk::{
+    Button,
+    ButtonExt,
+    ContainerExt,
+    Inhibit,
+    Label,
+    WidgetExt,
+    Window,
+    WindowType,
+};
+use gtk::Orientation::{Horizontal, Vertical};
+use relm::{Component, ContainerWidget, RemoteRelm, Widget};
+
+use self::CounterMsg::*;
+use self::Msg::*;
+
+trait IncDec {
+    fn dec(&mut self);
+    fn inc(&mut self);
+}
+
+impl IncDec for i32 {
+    fn dec(&mut self) {
+        *self -= 1;
+    }
+
+    fn inc(&mut self) {
+        *self += 1;
+    }
+}
+
+#[derive(Clone)]
+struct Model<T> {
+    counter: T,
+}
+
+#[derive(Msg)]
+enum CounterMsg {
+    Decrement,
+    Increment,
+}
+
+#[derive(Clone)]
+struct Counter<T> {
+    counter_label: Label,
+    vbox: gtk::Box,
+    _phantom: PhantomData<T>,
+}
+
+impl<T: Clone + IncDec + Display> Widget for Counter<T> {
+    type Model = Model<T>;
+    type ModelParam = T;
+    type Msg = CounterMsg;
+    type Root = gtk::Box;
+
+    fn model(value: T) -> Self::Model {
+        Model {
+            counter: value,
+        }
+    }
+
+    fn root(&self) -> &Self::Root {
+        &self.vbox
+    }
+
+    fn update(&mut self, event: CounterMsg, model: &mut Self::Model) {
+        let label = &self.counter_label;
+
+        match event {
+            Decrement => {
+                model.counter.dec();
+                label.set_text(&model.counter.to_string());
+            },
+            Increment => {
+                model.counter.inc();
+                label.set_text(&model.counter.to_string());
+            },
+        }
+    }
+
+    fn view(relm: &RemoteRelm<Self>, model: &Self::Model) -> Self {
+        let vbox = gtk::Box::new(Vertical, 0);
+
+        let plus_button = Button::new_with_label("+");
+        vbox.add(&plus_button);
+
+        let counter_label = Label::new(Some(model.counter.to_string().as_ref()));
+        vbox.add(&counter_label);
+
+        let minus_button = Button::new_with_label("-");
+        vbox.add(&minus_button);
+
+        connect!(relm, plus_button, connect_clicked(_), Increment);
+        connect!(relm, minus_button, connect_clicked(_), Decrement);
+
+        Counter {
+            counter_label: counter_label,
+            vbox: vbox,
+            _phantom: PhantomData,
+        }
+    }
+}
+
+#[derive(Msg)]
+enum Msg {
+    Quit,
+}
+
+#[derive(Clone)]
+struct Win {
+    _counter1: Component<Counter<i32>>,
+    _counter2: Component<Counter<i32>>,
+    window: Window,
+}
+
+impl Widget for Win {
+    type Model = ();
+    type ModelParam = ();
+    type Msg = Msg;
+    type Root = Window;
+
+    fn model(_: ()) -> () {
+        ()
+    }
+
+    fn root(&self) -> &Self::Root {
+        &self.window
+    }
+
+    fn update(&mut self, event: Msg, _model: &mut ()) {
+        match event {
+            Quit => gtk::main_quit(),
+        }
+    }
+
+    fn view(relm: &RemoteRelm<Self>, _model: &()) -> Win {
+        let window = Window::new(WindowType::Toplevel);
+
+        let hbox = gtk::Box::new(Horizontal, 0);
+
+        let counter1 = hbox.add_widget::<Counter<i32>, _>(&relm, 2);
+        let counter2 = hbox.add_widget::<Counter<i32>, _>(&relm, 3);
+        window.add(&hbox);
+
+        window.show_all();
+
+        connect!(relm, window, connect_delete_event(_, _) (Some(Quit), Inhibit(false)));
+
+        Win {
+            _counter1: counter1,
+            _counter2: counter2,
+            window: window,
+        }
+    }
+}
+
+fn main() {
+    Win::run(()).unwrap();
+}

relm-gen-widget/Cargo.toml

@@ -5,7 +5,7 @@ documentation = "https://docs.rs/relm-gen-widget/"
 license = "MIT"
 name = "relm-gen-widget"
 repository = "https://github.com/antoyo/relm"
-version = "0.9.0"
+version = "0.9.1"
 
 [dependencies]
 lazy_static = "^0.2.4"