--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cagou/core/widgets_handler.py	Sat Jul 09 17:24:01 2016 +0200
@@ -0,0 +1,106 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+# Cagou: desktop/mobile frontend for Salut à Toi XMPP client
+# Copyright (C) 2016 Jérôme Poisson (goffi@goffi.org)
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+from sat.core import log as logging
+log = logging.getLogger(__name__)
+from kivy.uix.boxlayout import BoxLayout
+from kivy.uix.button import Button
+from kivy import properties
+
+
+NEW_WIDGET_DIST = 10
+REMOVE_WIDGET_DIST = NEW_WIDGET_DIST
+
+
+class WHSplitter(Button):
+    horizontal=properties.BooleanProperty(True)
+    thickness=properties.NumericProperty(15)
+    split_move = None # we handle one split at a time, so we use a class attribute
+
+    def __init__(self, handler, **kwargs):
+        super(WHSplitter, self).__init__(**kwargs)
+        self.handler = handler
+
+    def getPos(self, touch):
+        if self.horizontal:
+            relative_y = self.handler.to_local(*touch.pos, relative=True)[1]
+            return self.handler.height - relative_y
+        else:
+            return touch.x
+
+    def on_touch_move(self, touch):
+        if self.split_move is None and self.collide_point(*touch.opos):
+            WHSplitter.split_move = self
+
+        if self.split_move is self:
+            pos = self.getPos(touch)
+            if pos > NEW_WIDGET_DIST:
+                # we are above minimal distance, we resize the widget
+                self.handler.setWidgetSize(self.horizontal, pos)
+
+    def on_touch_up(self, touch):
+        if self.split_move is self:
+            pos = self.getPos(touch)
+            if pos <= REMOVE_WIDGET_DIST:
+                # if we go under minimal distance, the widget is not wanted anymore
+                self.handler.removeWidget(self.horizontal)
+            WHSplitter.split_move=None
+        return super(WHSplitter, self).on_touch_up(touch)
+
+
+class WidgetsHandler(BoxLayout):
+
+    def __init__(self, host, wid=None, **kw):
+        self.host = host
+        if wid is None:
+            wid=self.default_widget
+        self.vert_wid = self.hor_wid = None
+        BoxLayout.__init__(self, orientation="vertical", **kw)
+        self.blh = BoxLayout(orientation="horizontal")
+        self.blv = BoxLayout(orientation="vertical")
+        self.blv.add_widget(WHSplitter(self))
+        self.blv.add_widget(wid)
+        self.blh.add_widget(WHSplitter(self, horizontal=False))
+        self.blh.add_widget(self.blv)
+        self.add_widget(self.blh)
+
+    @property
+    def default_widget(self):
+        return self.host.default_wid['factory'](self.host, self.host.default_wid, None, None)
+
+    def removeWidget(self, vertical):
+        if vertical and self.vert_wid is not None:
+            self.remove_widget(self.vert_wid)
+            self.vert_wid = None
+        elif self.hor_wid is not None:
+            self.blh.remove_widget(self.hor_wid)
+            self.hor_wid = None
+
+    def setWidgetSize(self, vertical, size):
+        if vertical:
+            if self.vert_wid is None:
+                self.vert_wid = WidgetsHandler(self.host, self.default_widget, size_hint=(1, None))
+                self.add_widget(self.vert_wid, len(self.children))
+            self.vert_wid.height=size
+        else:
+            if self.hor_wid is None:
+                self.hor_wid = WidgetsHandler(self.host, self.default_widget, size_hint=(None, 1))
+                self.blh.add_widget(self.hor_wid, len(self.blh.children))
+            self.hor_wid.width=size