dialogwidgets.js

const {GObject, Gtk} = imports.gi;

const ExtensionUtils = imports.misc.extensionUtils;
const Extension = ExtensionUtils.getCurrentExtension();
const Gettext = imports.gettext.domain(Extension.uuid);
const _ = Gettext.gettext;

var KeyValueDialog = GObject.registerClass(
    {
        GTypeName: (Extension.uuid + '.KeyValueDialog').replace(/[\W_]+/g,'_')
    },
    class EntryDialog extends Gtk.Dialog{
        _init(parent, title, keyLabel, valueLabel, key="", value=""){
            super._init({
                title: title,
                transientFor: parent.get_root(),
                modal: true,
                use_header_bar: true
            });
            let grid = new Gtk.Grid({
                marginTop: 10,
                marginBottom: 10,
                marginStart: 10,
                marginEnd:10,
                columnSpacing: 20,
                rowSpacing: 20,
                hexpand: true,
                vexpand: true,
                halign: Gtk.Align.CENTER
            });
            grid.insert_after(this.get_content_area(), null);

            let label1 = new Gtk.Label({
                halign: Gtk.Align.START,
                label: keyLabel
            });
            grid.attach(label1, 0, 0, 1, 1);
            this._entry1 = new Gtk.Entry({
                text: key
            });
            grid.attach(this._entry1, 1, 0, 1, 1);

            let label2 = new Gtk.Label({
                halign: Gtk.Align.START,
                label: valueLabel
            });
            grid.attach(label2, 0, 1, 1, 1);
            this._entry2 = new Gtk.Entry({
                text: value
            });
            grid.attach(this._entry2, 1, 1, 1, 1);

            this.add_button(_('Cancel'), Gtk.ResponseType.CANCEL);
            this.add_button(_('Ok'), Gtk.ResponseType.OK);
        }

        getKey(){
            return this._entry1.get_text();
        }
        setKey(key){
            this._entry1.set_text(key);
        }
        getValue(){
            return this._entry2.get_text();
        }
        setValue(value){
            this._entry2.set_text(value);
        }
    }
);