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egOpen.js
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egOpen.js
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#!/usr/bin/gjs
/*
GJS example showing how to build Gtk javascript applications
with FileChooserDialog with FileFilter, set_extra_widget (ComboBox),
Gio File new_for_path, load_contents_async, query_info_async
Run it with:
gjs egOpen.js
*/
const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const GObj = imports.gi.GObject;
const Gtk = imports.gi.Gtk;
const Lang = imports.lang;
// Get application folder and add it into the imports path
function getAppFileInfo() {
let stack = (new Error()).stack,
stackLine = stack.split('\n')[1],
coincidence, path, file;
if (!stackLine) throw new Error('Could not find current file (1)');
coincidence = new RegExp('@(.+):\\d+').exec(stackLine);
if (!coincidence) throw new Error('Could not find current file (2)');
path = coincidence[1];
file = Gio.File.new_for_path(path);
return [file.get_path(), file.get_parent().get_path(), file.get_basename()];
}
const path = getAppFileInfo()[1];
imports.searchPath.push(path);
const App = function () {
this.title = 'Example Open';
GLib.set_prgname(this.title);
};
App.prototype.run = function (ARGV) {
this.application = new Gtk.Application();
this.application.connect('activate', () => { this.onActivate(); });
this.application.connect('startup', () => { this.onStartup(); });
this.application.run([]);
};
App.prototype.onActivate = function () {
this.window.show_all();
};
App.prototype.onStartup = function() {
this.buildUI();
};
App.prototype.buildUI = function() {
this.window = new Gtk.ApplicationWindow({ application: this.application,
title: this.title,
default_height: 400,
default_width: 500,
window_position: Gtk.WindowPosition.CENTER });
try {
this.window.set_icon_from_file(path + '/assets/appIcon.png');
} catch (err) {
this.window.set_icon_name('application-x-executable');
}
this.window.set_titlebar(this.getHeader());
this.window.add(this.getBody());
};
App.prototype.getHeader = function () {
let headerBar, button;
headerBar = new Gtk.HeaderBar();
headerBar.set_show_close_button(true);
button = new Gtk.Button({ label: 'Open' });
button.connect ('clicked', () => { this.openDialog(); });
headerBar.pack_start(button);
return headerBar;
};
App.prototype.getBody = function () {
let content, scroll, view, label;
content = new Gtk.Grid();
scroll = new Gtk.ScrolledWindow({ hexpand: true, vexpand: true });
this.buffer = new Gtk.TextBuffer();
view = new Gtk.TextView();
view.set_buffer(this.buffer);
scroll.add(view);
this.label = new Gtk.Label({ halign: Gtk.Align.START, label: 'Open a file...' });
content.attach(scroll, 0, 0, 1, 1);
content.attach(this.label, 0, 1, 1, 1);
return content;
};
App.prototype.openDialog = function() {
let filter, chooser, store, combo, renderer, result, name, file, exit = false;
filter = new Gtk.FileFilter();
filter.add_mime_type('text/plain');
chooser = new Gtk.FileChooserDialog({
action: Gtk.FileChooserAction.OPEN,
filter: filter,
select_multiple: false,
transient_for: this.window,
title: 'Open'
});
// Without setting a current folder, folders won't show its contents
//
// Example set home folder by default:
// chooser.set_current_folder(GLib.get_home_dir());
chooser.set_current_folder(path);
// Add the buttons and its return values
chooser.add_button('Cancel', Gtk.ResponseType.CANCEL);
chooser.add_button('OK', Gtk.ResponseType.OK);
// This is to add the 'combo' filtering options
store = new Gtk.ListStore();
store.set_column_types([GObj.TYPE_STRING, GObj.TYPE_STRING]);
store.set(store.append(), [0, 1], ['text', 'text/plain']);
store.set(store.append(), [0, 1], ['js', '*.js']);
store.set(store.append(), [0, 1], ['md', '*.md']);
combo = new Gtk.ComboBox({ model: store });
renderer = new Gtk.CellRendererText();
combo.pack_start(renderer, false);
combo.add_attribute(renderer, "text", 1);
combo.set_active(0);
combo.connect ('changed', (widget) => {
let model, active, type, text, filter;
model = widget.get_model();
active = widget.get_active_iter()[1];
type = model.get_value(active, 0);
text = model.get_value(active, 1);
if (type === 'text') {
filter = new Gtk.FileFilter();
filter.add_mime_type(text);
} else {
filter = new Gtk.FileFilter();
filter.add_pattern(text);
}
chooser.set_filter(filter);
});
chooser.set_extra_widget(combo);
// Run the dialog
result = chooser.run();
name = chooser.get_filename();
if (result === Gtk.ResponseType.OK) {
this.openFile(name);
}
chooser.destroy();
};
App.prototype.openFile = function(name) {
let file;
file = Gio.File.new_for_path(name);
file.load_contents_async(null, (file, res) => {
let contents;
try {
contents = file.load_contents_finish(res)[1];
this.buffer.delete(this.buffer.get_iter_at_offset(0),
this.buffer.get_iter_at_offset(this.buffer.get_char_count()));
this.buffer.insert_at_cursor(contents.toString() + '\n', -1);
} catch (e) {
return;
}
});
file.query_info_async('standard::type,standard::size',
Gio.FileQueryInfoFlags.NONE, GLib.PRIORITY_LOW, null,
(source, async) => {
let info, type, size, text;
info = source.query_info_finish(async);
type = info.get_file_type();
size = info.get_size();
text = 'File info type: ' + type + ', size: ' + size;
this.label.set_text(text);
});
};
//Run the application
let app = new App();
app.run(ARGV);
// Help: https://people.gnome.org/~gcampagna/docs/Gio-2.0/Gio.File.html