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// Copyright 2013 Endless Mobile, Inc.
const Lang = imports.lang;
const Endless = imports.gi.Endless;
const Gtk = imports.gi.Gtk;
const Gdk = imports.gi.Gdk;
const GObject = imports.gi.GObject;
const TEST_APPLICATION_ID = 'com.endlessm.example.test-back-forward';
const CSS_STYLES = ' \
.count { \
font-size: 36px; \
padding: 10px; \
color: black; \
background-color: white; \
border-radius: 0; \
transition: border-radius 500ms, background-color 500ms; \
} \
.current { \
border-radius: 20px; \
background-color: purple; \
}';
const Page = new Lang.Class({
Name: 'Page',
Extends: Gtk.Grid,
Properties: {
'current': GObject.ParamSpec.int('current', '', '',
GObject.ParamFlags.READABLE | GObject.ParamFlags.WRITABLE,
0, 4, 0)
},
_init: function (props) {
this._current = 0;
this._frames = null;
props = props || {};
props.orientation = Gtk.Orientation.HORIZONTAL;
this.parent(props);
this._frames = [0, 1, 2, 3, 4].map(function (item, index) {
let frame = new Gtk.Frame({
margin: 5
});
let label = new Gtk.Label({
label: index.toString()
});
frame.add(label);
frame.get_style_context().add_class('count');
this.add(frame);
return frame;
}, this);
},
get current() {
return this._current;
},
set current(value) {
if(this._frames)
this._frames[this._current].get_style_context().remove_class('current');
this._current = value;
if(this._frames)
this._frames[this._current].get_style_context().add_class('current');
this.notify('current');
}
});
const TestApplication = new Lang.Class ({
Name: 'TestApplication',
Extends: Endless.Application,
vfunc_startup: function () {
this.parent();
this._win = new Endless.Window({
application: this
});
let page = new Page({
halign: Gtk.Align.CENTER,
valign: Gtk.Align.CENTER,
expand: true,
});
let nav = new Endless.TopbarNavButton();
this._win.page_manager.add(page, {
left_topbar_widget: nav
});
let provider = new Gtk.CssProvider();
provider.load_from_data(CSS_STYLES);
Gtk.StyleContext.add_provider_for_screen(Gdk.Screen.get_default(), provider,
Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
nav.back_button.connect('clicked', function () {
page.current--;
});
nav.forward_button.connect('clicked', function () {
page.current++;
});
page.connect('notify::current', function () {
nav.back_button.sensitive = true;
nav.forward_button.sensitive = true;
if (page.current === 0)
nav.back_button.sensitive = false;
if (page.current === 4)
nav.forward_button.sensitive = false;
});
page.current = 0;
},
vfunc_activate: function () {
this._win.show_all();
this.parent();
}
});
let app = new TestApplication({
application_id: TEST_APPLICATION_ID,
flags: 0
});
app.run(ARGV);
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