[pygobject] [gi-demos] add the links demo

[John Palmieri <johnp src gnome org>]

commit 03c0aa498470037ef2aa6a8233198ff521f8d42f
Author: John (J5) Palmieri <johnp redhat com>
Date:   Wed Feb 16 16:18:24 2011 -0500

    [gi-demos] add the links demo

 demos/gtk-demo/demos/links.py |   74 +++++++++++++++++++++++++++++++++++++++++
 1 files changed, 74 insertions(+), 0 deletions(-)
---
diff --git a/demos/gtk-demo/demos/links.py b/demos/gtk-demo/demos/links.py
new file mode 100644
index 0000000..898f3e6
--- /dev/null
+++ b/demos/gtk-demo/demos/links.py
@@ -0,0 +1,74 @@
+#!/usr/bin/env python
+# -*- Mode: Python; py-indent-offset: 4 -*-
+# vim: tabstop=4 shiftwidth=4 expandtab
+#
+# Copyright (C) 2010 Red Hat, Inc., John (J5) Palmieri <johnp redhat com>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
+# USA
+
+title = "Links"
+description = """
+GtkLabel can show hyperlinks. The default action is to call gtk_show_uri() on 
+their URI, but it is possible to override this with a custom handler.
+"""
+
+from gi.repository import Gtk
+
+class LinksApp:
+    def __init__(self):
+        self.window = Gtk.Window()
+        self.window.set_title('Links')
+        self.window.set_border_width(12)
+        self.window.connect('destroy', Gtk.main_quit)
+
+        label = Gtk.Label("""Some <a href="http://en.wikipedia.org/wiki/Text";
+title="plain text">text</a> may be marked up
+as hyperlinks, which can be clicked
+or activated via <a href="keynav">keynav</a>""")
+
+        label.set_use_markup(True)
+        label.connect("activate-link", self.activate_link)
+        self.window.add(label);
+        label.show()
+
+        self.window.show()
+
+    def activate_link(self, label, uri):
+        if uri == 'keynav':
+            parent = label.get_toplevel()
+            markup = """The term <i>keynav</i> is a shorthand for
+keyboard navigation and refers to the process of using
+a program (exclusively) via keyboard input."""
+            dialog = Gtk.MessageDialog(parent,
+                                       Gtk.DialogFlags.DESTROY_WITH_PARENT,
+                                       Gtk.MessageType.INFO,
+                                       Gtk.ButtonsType.OK,
+                                       text=markup,
+                                       use_markup=True)
+            dialog.present()
+            dialog.connect('response', self.response_cb)
+
+            return True
+
+    def response_cb(self, dialog, response_id):
+        dialog.destroy()
+
+def main(demoapp=None):
+    app = LinksApp()
+    Gtk.main()
+
+if __name__ == '__main__':
+    main()