uri_handler functions from sysobj

This allows link clicks to be intercepted so that they might
be used by the application internally before falling back
to the system uri handler.

I've also found the default GTK label link handler to be unreliable
outside of GNOME Shell, and this will use xdg-open instead.

Signed-off-by: Burt P <pburt0@gmail.com>

4 files changed, 107 insertions, 0 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8bbf301c..8bbdd837 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -98,6 +98,7 @@ include_directories(
 	${CMAKE_SOURCE_DIR}/includes/${HARDINFO_ARCH}
 	${CMAKE_SOURCE_DIR}/deps/uber-graph
 	${CMAKE_SOURCE_DIR}/deps/sysobj_early/include
+	${CMAKE_SOURCE_DIR}/deps/sysobj_early/gui
 	${CMAKE_BINARY_DIR}
 	${GTK_INCLUDE_DIRS}
 	${LIBSOUP_INCLUDE_DIRS}
@@ -216,6 +217,7 @@ endforeach()
 add_library(sysobj_early STATIC
 	deps/sysobj_early/src/gg_slist.c
 	deps/sysobj_early/src/strstr_word.c
+	deps/sysobj_early/gui/uri_handler.c
 )
 set_target_properties(sysobj_early PROPERTIES COMPILE_FLAGS "-std=c99 -Wall -Wextra -Wno-parentheses -Wno-unused-function")
 
diff --git a/deps/sysobj_early/gui/uri_handler.c b/deps/sysobj_early/gui/uri_handler.c
new file mode 100644
index 00000000..055dbaca
--- /dev/null
+++ b/deps/sysobj_early/gui/uri_handler.c
@@ -0,0 +1,48 @@
+/*
+ * sysobj - https://github.com/bp0/verbose-spork
+ * Copyright (C) 2018  Burt P. <pburt0@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
+
+#include <stdio.h>
+#include "uri_handler.h"
+
+static uri_handler uri_func = NULL;
+
+void uri_set_function(uri_handler f) {
+    uri_func = f;
+}
+
+gboolean uri_open(const gchar *uri) {
+    gboolean ret = FALSE;
+    if (uri_func)
+        ret = uri_func(uri);
+    if (ret) return TRUE;
+
+    return uri_open_default(uri);
+}
+
+gboolean uri_open_default(const gchar *uri) {
+    gchar *argv[] = { "/usr/bin/xdg-open", (gchar*)uri, NULL };
+    GError *err = NULL;
+    g_spawn_async(NULL, argv, NULL, G_SPAWN_DEFAULT, NULL, NULL, NULL, &err );
+    if (err) {
+        fprintf(stderr, "Error opening URI %s: %s\n", uri, err->message);
+        g_error_free(err);
+    }
+    return TRUE;
+}
diff --git a/deps/sysobj_early/gui/uri_handler.h b/deps/sysobj_early/gui/uri_handler.h
new file mode 100644
index 00000000..8d7892c5
--- /dev/null
+++ b/deps/sysobj_early/gui/uri_handler.h
@@ -0,0 +1,32 @@
+/*
+ * sysobj - https://github.com/bp0/verbose-spork
+ * Copyright (C) 2018  Burt P. <pburt0@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
+
+#ifndef URI_HANDLER_H
+#define URI_HANDLER_H
+
+#include <glib.h>
+
+typedef gboolean (*uri_handler)(const gchar *uri);
+
+void uri_set_function(uri_handler f);
+gboolean uri_open(const gchar *uri);
+gboolean uri_open_default(const gchar *uri); /* uses xdg-open */
+
+#endif
diff --git a/shell/shell.c b/shell/shell.c
index 75ee8300..31836d62 100644
--- a/shell/shell.c
+++ b/shell/shell.c
@@ -720,6 +720,22 @@ select_first_tree_item(gpointer data)
     return FALSE;
 }
 
+gboolean hardinfo_link(const gchar *uri) {
+    /* Clicked link events pass through here on their
+     * way to the default handler (xdg-open).
+     *
+     * TODO: In the future, links could be used to
+     * jump to different pages in hardinfo.
+     *
+     * if (g_str_has_prefix(uri, "hardinfo:")) {
+     *       hardinfo_navigate(g_utf8_strchr(uri, strlen("hardinfo"), ':') + 1);
+     *       return TRUE;
+     * }
+     */
+
+    return FALSE; /* didn't handle it */
+}
+
 void shell_init(GSList * modules)
 {
     if (shell) {
@@ -729,6 +745,8 @@ void shell_init(GSList * modules)
 
     DEBUG("initializing shell");
 
+    uri_set_function(hardinfo_link);
+
     create_window();
 
     shell_action_set_property("ConnectToAction", "is-important", TRUE);
@@ -1502,6 +1520,10 @@ static void module_selected_show_info_list(GKeyFile *key_file,
                                      ngroups > 1);
 }
 
+static gboolean detail_activate_link (GtkLabel *label, gchar *uri, gpointer user_data) {
+    return uri_open(uri);
+}
+
 static void module_selected_show_info_detail(GKeyFile *key_file,
                                              ShellModuleEntry *entry,
                                              gchar **groups)
@@ -1570,6 +1592,9 @@ static void module_selected_show_info_detail(GKeyFile *key_file,
                 gtk_box_pack_start(GTK_BOX(value_box), value_icon, FALSE, FALSE, 0);
                 gtk_box_pack_start(GTK_BOX(value_box), value_label, TRUE, TRUE, 0);
 
+                g_signal_connect(key_label, "activate-link", G_CALLBACK(detail_activate_link), NULL);
+                g_signal_connect(value_label, "activate-link", G_CALLBACK(detail_activate_link), NULL);
+
                 gtk_widget_show(key_label);
                 gtk_widget_show(value_box);
                 gtk_widget_show(value_label);