From 4d93a73047c687c9f930f5432611d129dea3c8ea Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Wed, 03 Oct 2018 01:02:04 -0400
Subject: MqTabLabel: Rename tab on double click

---
diff --git a/src/tab-label.c b/src/tab-label.c
index b9fcbbd..ec3429c 100644
--- a/src/tab-label.c
+++ b/src/tab-label.c
@@ -44,6 +44,8 @@ struct _MqTabLabel {
 	gchar         *scrolled_title;
 	gchar         *scrolled_markup;
 	GtkWidget     *popover;
+	GtkWidget     *name_popover;
+	GtkWidget     *name_entry;
 };
 
 enum {
@@ -243,13 +245,121 @@ set_web_view(MqTabLabel *tab_label, MqWebView *web_view)
 		G_CALLBACK(title_cb), tab_label);
 }
 
+static void
+set_custom_title(MqTabLabel *tab_label, const gchar *title)
+{
+	/* TODO: Handle empty string.  Set custom title instead of overriding
+	 * (temporarily) regular title. */
+	mq_tab_page_set_title(tab_label->tab_page, title);
+	set_title(tab_label, title);
+}
+
+static gboolean
+name_entry_key_press_event_cb(GtkEntry G_GNUC_UNUSED *entry, GdkEventKey *event,
+	MqTabLabel *tab_label)
+{
+	switch (event->keyval) {
+		case GDK_KEY_Escape:
+			gtk_widget_hide(tab_label->name_popover);
+			return TRUE;
+		case GDK_KEY_Return:
+		case GDK_KEY_KP_Enter:
+		case GDK_KEY_ISO_Enter:
+			set_custom_title(tab_label, gtk_entry_get_text(
+					GTK_ENTRY(tab_label->name_entry)));
+			gtk_widget_hide(tab_label->name_popover);
+			return TRUE;
+		default:
+			return FALSE;
+	}
+}
+
+static void
+name_entry_changed_cb(GtkEditable *editable, G_GNUC_UNUSED gpointer user_data)
+{
+	GtkEntry    *entry;
+	const gchar *text;
+	const gchar *icon;
+
+	entry = GTK_ENTRY(editable);
+
+	text = gtk_entry_get_text(entry);
+	if (text && text[0]) {
+		icon = "edit-clear-symbolic";
+	} else {
+		icon = NULL;
+	}
+
+	gtk_entry_set_icon_from_icon_name(entry, GTK_ENTRY_ICON_SECONDARY,
+		icon);
+	gtk_entry_set_icon_activatable(entry, GTK_ENTRY_ICON_SECONDARY,
+		icon ? TRUE : FALSE);
+	gtk_entry_set_icon_sensitive(entry, GTK_ENTRY_ICON_SECONDARY,
+		icon ? TRUE : FALSE);
+}
+
+static void
+name_entry_icon_press_cb(GtkEntry *entry, GtkEntryIconPosition icon_pos,
+	G_GNUC_UNUSED GdkEvent *event, G_GNUC_UNUSED gpointer user_data)
+{
+	if (icon_pos == GTK_ENTRY_ICON_SECONDARY) {
+		gtk_entry_set_text(entry, "");
+	}
+}
+
+static void
+name_close_clicked_cb(G_GNUC_UNUSED GtkButton *button, MqTabLabel *tab_label)
+{
+	set_custom_title(tab_label, gtk_entry_get_text(
+			GTK_ENTRY(tab_label->name_entry)));
+	gtk_widget_hide(tab_label->name_popover);
+}
+
+static void
+create_name_popover(MqTabLabel *tab_label)
+{
+	GtkWidget *close_button;
+	GtkWidget *box;
+
+	/* Title entry */
+	tab_label->name_entry = gtk_entry_new();
+	g_signal_connect(tab_label->name_entry, "key-press-event",
+		G_CALLBACK(name_entry_key_press_event_cb), tab_label);
+	g_signal_connect(GTK_EDITABLE(tab_label->name_entry), "changed",
+		G_CALLBACK(name_entry_changed_cb), NULL);
+	g_signal_connect(GTK_ENTRY(tab_label->name_entry), "icon-press",
+		G_CALLBACK(name_entry_icon_press_cb), NULL);
+	gtk_entry_set_text(GTK_ENTRY(tab_label->name_entry), tab_label->title);
+
+	/* Close button */
+	close_button = gtk_button_new_from_icon_name("window-close",
+		GTK_ICON_SIZE_BUTTON);
+	gtk_button_set_relief(GTK_BUTTON(close_button), GTK_RELIEF_NONE);
+	gtk_widget_set_tooltip_text(close_button, _("Rename tab"));
+	gtk_widget_set_can_focus(close_button, FALSE);
+	g_signal_connect(close_button, "clicked",
+		G_CALLBACK(name_close_clicked_cb), tab_label);
+
+	/* Box */
+	box = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0);
+	gtk_box_pack_start(GTK_BOX(box), tab_label->name_entry, FALSE, FALSE,
+		0);
+	gtk_box_pack_end(GTK_BOX(box), close_button, FALSE, FALSE, 0);
+
+	/* Set up the popover. */
+	tab_label->name_popover = gtk_popover_new(GTK_WIDGET(tab_label));
+	gtk_container_add(GTK_CONTAINER(tab_label->name_popover), box);
+
+	/* NB: gtk_popover_popup() is new in GTK+ 3.22. */
+	gtk_widget_show_all(tab_label->name_popover);
+}
+
 static gboolean
 button_press_cb(GtkWidget *widget, GdkEventButton *event,
 	MqTabLabel *tab_label)
 {
 	if (event->type == GDK_2BUTTON_PRESS) {
-		mq_tab_page_set_title(tab_label->tab_page, "Renamed");
-		set_title(tab_label, "Renamed");
+		create_name_popover(tab_label);
 	} else if (event->button == 2) {
 		mq_tab_page_close(tab_label->tab_page);
 	} else if (event->button == 3) {
--
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