From 38a3a8214e80cf5102ead3e25a10b6495215230d Mon Sep 17 00:00:00 2001
From: Patrick McDermott <pj@pehjota.net>
Date: Wed, 27 Sep 2017 03:28:57 -0400
Subject: MqTabBody: Handle middle mouse clicks on Web view

Open a targeted link in a new tab or load a URI from the primary
clipboard.
---
(limited to 'src')

diff --git a/src/tab-body.c b/src/tab-body.c
index 58f3eea..6bf95b1 100644
--- a/src/tab-body.c
+++ b/src/tab-body.c
@@ -418,6 +418,56 @@ context_menu_cb(WebKitWebView __attribute__((unused)) *web_view,
 	return FALSE;
 }
 
+static void
+clipboard_text_recv_cb(GtkClipboard *clipboard, const gchar *text,
+	MqTabBody *body)
+{
+	webkit_web_view_load_uri(body->web_view, text);
+}
+
+/* This callback is a hack to determine on middle mouse click whether to open a
+ * link in a new tab or to load a URI from the primary clipboard.  The WebKit1
+ * API provided webkit_web_view_get_hit_test_result() which would have been
+ * easier. */
+static void
+mouse_target_changed_cb(WebKitWebView __attribute__((unused)) *web_view,
+	WebKitHitTestResult *hit_test_result,
+	guint __attribute__((unused)) modifiers,
+	MqTabBody *body)
+{
+	body->mouse_target_hit_test_result = hit_test_result;
+	g_object_ref(body->mouse_target_hit_test_result);
+}
+
+static gboolean
+button_press_cb(WebKitWebView *web_view, GdkEvent *event, MqTabBody *body)
+{
+	WebKitHitTestResult *hit_test_result;
+	GtkClipboard        *clipboard;
+
+	/* Make sure this is a middle mouse button press event. */
+	if (event->type != GDK_BUTTON_PRESS || event->button.button != 2) {
+		return FALSE;
+	}
+
+	hit_test_result = body->mouse_target_hit_test_result;
+
+	if (webkit_hit_test_result_context_is_link(hit_test_result)) {
+		mq_tab_new_relative(
+			webkit_hit_test_result_get_link_uri(hit_test_result),
+			body->tab);
+	} else {
+		clipboard = gtk_clipboard_get(GDK_SELECTION_PRIMARY);
+		gtk_clipboard_request_text(clipboard,
+			(GtkClipboardTextReceivedFunc) clipboard_text_recv_cb,
+			body);
+	}
+
+	g_object_unref(hit_test_result);
+
+	return TRUE;
+}
+
 MqTabBody *
 mq_tab_body_new(MqTab *tab, const gchar *uri)
 {
@@ -439,6 +489,10 @@ mq_tab_body_new(MqTab *tab, const gchar *uri)
 	body->hit_test_result = NULL;
 	g_signal_connect(body->web_view, "context-menu",
 		G_CALLBACK(context_menu_cb), body);
+	g_signal_connect(body->web_view, "mouse-target-changed",
+		G_CALLBACK(mouse_target_changed_cb), body);
+	g_signal_connect(body->web_view, "button-press-event",
+		G_CALLBACK(button_press_cb), body);
 
 	return body;
 }
diff --git a/src/tab-body.h b/src/tab-body.h
index 1e3b3f9..0b75b4c 100644
--- a/src/tab-body.h
+++ b/src/tab-body.h
@@ -34,6 +34,7 @@ struct MqTabBody {
 	GtkWidget           *container;
 	WebKitWebView       *web_view;
 	WebKitHitTestResult *hit_test_result;
+	WebKitHitTestResult *mouse_target_hit_test_result;
 };
 
 MqTabBody *
--
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