tabswitch ported to gedit 3

plugins/gedit3/tabswitch/tabswitch.plugin

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+[Plugin]
+Loader=python
+Module=tabswitch
+IAge=3
+Name=TabSwitch
+Description=Allows to ctrl+tab-switch between documents
+Authors=Elia Sarti, Madhusudhan Sriniavasa
+Copyright=Copyright © 2009 Elia Sarti

plugins/gedit3/tabswitch/tabswitch.py

@@ -0,0 +1,62 @@
+# -*- coding: utf-8 -*-
+
+VERSION = "0.1"
+
+from gi.repository import GObject, Gtk, Gedit, Gdk, Gio
+from gettext import gettext as _
+import cPickle, os
+
+class TabSwitchPlugin(GObject.Object, Gedit.WindowActivatable):
+    __gtype_name__ = "ExamplePyWindowActivatable"
+    window = GObject.property(type=Gedit.Window)
+
+    def __init__(self):
+        GObject.Object.__init__(self)
+        self.id_name = 'TabSwitchPluginID'
+
+    def do_activate(self):
+        l_ids = []
+        for signal in ('key-press-event',):
+            method = getattr(self, 'on_window_' + signal.replace('-', '_'))
+            l_ids.append(self.window.connect(signal, method))
+        self.window.set_data(self.id_name, l_ids)
+
+    def do_deactivate(self):
+        l_ids = self.window.get_data(self.id_name)
+
+        for l_id in l_ids:
+            self.window.disconnect(l_id)
+
+    def on_window_key_press_event(self, window, event):
+        key = Gdk.keyval_name(event.keyval)
+
+        if event.state & Gdk.ModifierType.CONTROL_MASK and key in ('Tab', 'ISO_Left_Tab'):
+            atab = self.window.get_active_tab()
+            docs = self.window.get_documents()
+            tabs = []
+            for doc in docs:
+              tabs.append(Gedit.Tab.get_from_document(doc))
+
+            tlen = len(tabs)
+            i = 0
+            tab = atab
+
+            for tab in tabs:
+                i += 1
+                if tab == atab:
+                    break
+
+            if key == 'ISO_Left_Tab':
+                i -= 2
+
+            if i < 0:
+                tab = tabs[tlen-1]
+            elif i >= tlen:
+                tab = tabs[0]
+            else:
+                tab = tabs[i]
+
+            self.window.set_active_tab(tab)
+
+            return True
+