src/tab-chrome.[ch]: Show hovered link URI in URI bar

And do so only if the URI bar hasn't been manually edited.  (Or maybe we
can just cache the edited string.  Then the cache would have to be
updated if the Web view's URI changes while a link is targeted.)

This is a cool feature I haven't seen anywhere.  It largely obviates a
status bar, puts the hovered link URI in arguably a more sensible
location, and allows the hovered link URI to be added to the primary
selection and/or clipboard quickly and easily from the URI bar.

2 files changed, 34 insertions, 0 deletions

diff --git a/src/tab-chrome.c b/src/tab-chrome.c
index ea168dd..1b07236 100644
--- a/src/tab-chrome.c
+++ b/src/tab-chrome.c
@@ -117,6 +117,11 @@ navigation_toolbar_new(MqTabChrome *chrome, gchar *uri)
 	gtk_tool_item_set_expand(uri_toolitem, TRUE);
 	gtk_toolbar_insert(navigation_toolbar, uri_toolitem, -1);
 
+	/* URI bar hovered link style */
+	chrome->hovered_link_style = pango_attr_list_new();
+	pango_attr_list_insert(chrome->hovered_link_style,
+		pango_attr_style_new(PANGO_STYLE_ITALIC));
+
 	gtk_widget_set_hexpand(GTK_WIDGET(navigation_toolbar), TRUE);
 
 	chrome->load_failed = FALSE;
@@ -203,6 +208,32 @@ load_failed_cb(WebKitWebView __attribute__((unused)) *web_view,
 }
 
 static void
+mouse_target_changed_cb(WebKitWebView __attribute__((unused)) *web_view,
+	WebKitHitTestResult *hit_test_result,
+	guint __attribute__((unused)) modifiers,
+	MqTabChrome *chrome)
+{
+	if (webkit_hit_test_result_context_is_link(hit_test_result)) {
+		if (g_strcmp0(gtk_entry_get_text(GTK_ENTRY(chrome->uri_entry)),
+				webkit_web_view_get_uri(web_view)) == 0) {
+			gtk_entry_set_text(GTK_ENTRY(chrome->uri_entry),
+				webkit_hit_test_result_get_link_uri(
+					hit_test_result));
+			gtk_entry_set_attributes(GTK_ENTRY(chrome->uri_entry),
+				chrome->hovered_link_style);
+		}
+	} else {
+		if (gtk_entry_get_attributes(GTK_ENTRY(chrome->uri_entry)) ==
+				chrome->hovered_link_style) {
+			gtk_entry_set_text(GTK_ENTRY(chrome->uri_entry),
+				webkit_web_view_get_uri(web_view));
+			gtk_entry_set_attributes(GTK_ENTRY(chrome->uri_entry),
+				NULL);
+		}
+	}
+}
+
+static void
 load_progress_cb(WebKitWebView *web_view,
 	GParamSpec __attribute__((unused)) *paramspec, MqTabChrome *chrome)
 {
@@ -276,6 +307,8 @@ connect_web_view(MqTabChrome *chrome)
 		G_CALLBACK(load_changed_cb), chrome);
 	g_signal_connect(chrome->web_view, "load-failed",
 		G_CALLBACK(load_failed_cb), chrome);
+	g_signal_connect(chrome->web_view, "mouse-target-changed",
+		G_CALLBACK(mouse_target_changed_cb), chrome);
 	g_signal_connect(chrome->web_view, "notify::estimated-load-progress",
 		G_CALLBACK(load_progress_cb), chrome);
 	g_signal_connect(chrome->web_view, "notify::uri",
diff --git a/src/tab-chrome.h b/src/tab-chrome.h
index aef59f9..61fc069 100644
--- a/src/tab-chrome.h
+++ b/src/tab-chrome.h
@@ -36,6 +36,7 @@ typedef struct {
 	GtkWidget     *reload_icon;
 	GtkToolItem   *stop_reload_button;
 	GtkWidget     *uri_entry;
+	PangoAttrList *hovered_link_style;
 	WebKitWebView *web_view;
 	gboolean       load_failed;
 } MqTabChrome;