Kordophone/src/transcript/transcript-container-view.vala

using Gtk;
using Adw;

class TranscriptContainerView : Adw.Bin {
    public TranscriptView transcript_view;
    public Entry message_entry;
    public signal void on_send(string message);

    private Box container;
    private Button send_button;

    public TranscriptContainerView () {
        container = new Gtk.Box (Gtk.Orientation.VERTICAL, 0);
        set_child (container);

        // Create message list view
        transcript_view = new TranscriptView();
        transcript_view.set_vexpand(true);
        container.append(transcript_view);

        // Create bottom box for input
        var input_box = new Box(Orientation.HORIZONTAL, 6);
        input_box.add_css_class("message-input-box");
        input_box.set_valign(Align.END);
        input_box.set_spacing(6);
        container.append(input_box);

        // Create message entry
        message_entry = new Entry();
        message_entry.add_css_class("message-input-entry");
        message_entry.set_placeholder_text("Type a message...");
        message_entry.set_hexpand(true);
        message_entry.changed.connect(on_text_changed);
        message_entry.activate.connect(on_request_send);
        input_box.append(message_entry);

        // Create send button
        send_button = new Button();
        send_button.set_label("Send");
        send_button.set_sensitive(false);
        send_button.add_css_class("suggested-action");
        send_button.clicked.connect(on_request_send);
        input_box.append(send_button);
    }

    private void on_text_changed() {
        send_button.set_sensitive(message_entry.text.length > 0);
    }

    private void on_request_send() {
        if (message_entry.text.length > 0) {
            on_send(message_entry.text);
            message_entry.text = "";
        }
    }
}