Initial commit

10 files changed, 1022 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..2f836aa
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*~
+*.pyc
diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..4a004d5
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,2 @@
+Tomeu Vizoso <tomeu@sugarlabs.org>
+
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..d511905
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,339 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
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+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
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+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
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+
+The source code for a work means the preferred form of the work for
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+distribution of the source code, even though third parties are not
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+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
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+these terms and conditions.  You may not impose any further
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+You are not responsible for enforcing compliance by third parties to
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+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
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+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
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+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+			    NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+	    How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    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.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
diff --git a/activity/activity-mindmap.svg b/activity/activity-mindmap.svg
new file mode 100644
index 0000000..b27192d
--- /dev/null
+++ b/activity/activity-mindmap.svg
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd" [
+  <!ENTITY fill_color "#FFFFFF">
+  <!ENTITY stroke_color "#010101">
+]>
+<svg xmlns="http://www.w3.org/2000/svg" width="50" height="50">
+    <rect x="4" y="20" width="14" height="10" style="fill:&fill_color;;stroke:&stroke_color;;stroke-width:2.5;;stroke-linejoin:round"/>
+    <path d="M18 25 C28,23 22,12 31,10" style="fill:none;;stroke:&stroke_color;;stroke-width:2.5"/>
+    <path d="M18 25 L31,25" style="fill:none;;stroke:&stroke_color;;stroke-width:2.5"/>
+    <path d="M18 25 C28,27 22,37 31,40" style="fill:none;;stroke:&stroke_color;;stroke-width:2.5"/>
+    <rect x="31" y="5" width="14" height="10" style="fill:&fill_color;;stroke:&stroke_color;;stroke-width:2.5;;stroke-linejoin:round"/>
+    <rect x="31" y="20" width="14" height="10" style="fill:&fill_color;;stroke:&stroke_color;;stroke-width:2.5;;stroke-linejoin:round"/>
+    <rect x="31" y="35" width="14" height="10" style="fill:&fill_color;;stroke:&stroke_color;;stroke-width:2.5;;stroke-linejoin:round"/>
+</svg>
diff --git a/activity/activity.info b/activity/activity.info
new file mode 100755
index 0000000..c0a1cd5
--- /dev/null
+++ b/activity/activity.info
@@ -0,0 +1,7 @@
+[Activity]
+name = MindMap
+activity_version = 1
+service_name = org.sugarlabs.MindMap
+icon = activity-mindmap
+class = mindmapactivity.MindMapActivity
+
diff --git a/mindmapactivity.py b/mindmapactivity.py
new file mode 100755
index 0000000..e972f79
--- /dev/null
+++ b/mindmapactivity.py
@@ -0,0 +1,83 @@
+# Copyright (C) 2009, Tomeu Vizoso
+#
+# 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+
+import logging
+from gettext import gettext as _
+
+import gtk
+
+from sugar.activity import activity
+from sugar.graphics.toolbutton import ToolButton
+
+from model import MindMapModel
+from view import MindMapView
+from treeview import TreeView
+
+class MindMapActivity(activity.Activity):
+    def __init__(self, handle):
+        activity.Activity.__init__(self, handle)
+
+        toolbox = activity.ActivityToolbox(self)
+        self.set_toolbox(toolbox)
+        toolbox.show()
+
+        self._edit_toolbar = EditToolbar()
+        self._edit_toolbar.new_thought_button.connect('clicked',
+                self.__new_thought_button_cb)
+        toolbox.add_toolbar(_('Edit'), self._edit_toolbar)
+        self._edit_toolbar.show()
+
+        self._model = MindMapModel()
+
+        pane = gtk.HPaned()
+        self.set_canvas(pane)
+        pane.show()
+
+        self._tree_view = TreeView(self._model)
+        pane.add1(self._tree_view)
+        self._tree_view.show()
+
+        self._view = MindMapView(model=self._model)
+        pane.pack2(self._view)
+        self._view.show()
+
+    def __new_thought_button_cb(self, button):
+        self._model.create_new_thought()
+
+    def write_file(self, file_path):
+        data = self._model.serialize()
+        open(file_path, 'w').write(data)
+
+    def read_file(self, file_path):
+        data = open(file_path, 'r').read()
+        self._model.unserialize(data)
+
+class EditToolbar(activity.EditToolbar):
+    __gtype_name__ = 'MindMapEditToolbar'
+
+    def __init__(self):
+        activity.EditToolbar.__init__(self)
+
+        separator = gtk.SeparatorToolItem()
+        self.insert(separator, -1)
+        separator.show()
+
+        self.new_thought_button = ToolButton('list-add')
+        self.new_thought_button.set_tooltip(_('New thought'))
+        self.new_thought_button.props.accelerator = _('<ctrl>n')
+        self.insert(self.new_thought_button, -1)
+        self.new_thought_button.show()
+
diff --git a/model.py b/model.py
new file mode 100644
index 0000000..75ad6a8
--- /dev/null
+++ b/model.py
@@ -0,0 +1,210 @@
+# Copyright (C) 2009, Tomeu Vizoso
+#
+# 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+
+import logging
+
+import gobject
+import gtk
+import cjson
+
+from sugar import dispatch
+
+class MindMapModel(gtk.GenericTreeModel):
+
+    _COLUMN_TYPES = (str, str, long, long)
+
+    def __init__(self):
+        gobject.GObject.__init__(self)
+
+        self._next_thought_id = 0
+        self._thoughts_by_id = {}
+        self._thoughts = []
+
+    def create_new_thought(self):
+        thought = Thought(self._next_thought_id)
+        self._add_thought(thought)
+
+    def _add_thought(self, thought):
+        thought.changed.connect(self.__thought_changed_cb)
+        self._thoughts.append(thought)
+        self._thoughts_by_id[thought.id] = thought
+        self._next_thought_id += 1
+
+        path = (thought.id,)
+        self.row_inserted(path, self.get_iter(path))
+
+    def get_thought(self, thought_id):
+        return self._thoughts_by_id[int(thought_id)]
+
+    def __thought_changed_cb(self, **kwargs):
+        thought = kwargs['sender']
+        path = (thought.id,)
+        self.row_changed(path, self.get_iter(path))
+
+    def get_thoughts(self):
+        return self._thoughts
+
+    def serialize(self):
+        thoughts = []
+        for thought in self._thoughts:
+            thought_dict = {}
+            thought_dict['id'] = thought.id
+            thought_dict['name'] = thought.name
+            thought_dict['x'] = thought.x
+            thought_dict['y'] = thought.y
+            thoughts.append(thought_dict)
+
+        return cjson.encode({'thoughts': thoughts})
+
+    def unserialize(self, data):
+        thoughts = cjson.decode(data)['thoughts']
+        for thought_dict in thoughts:
+            thought = Thought(thought_dict['id'])
+            thought.name = thought_dict['name']
+            thought.x = thought_dict['x']
+            thought.y = thought_dict['y']
+            self._add_thought(thought)
+
+    # gtk.GenericTreeModel methods
+    # paths and rowrefs are the thought ids
+    def on_get_flags(self):
+        return gtk.TREE_MODEL_ITERS_PERSIST
+
+    def on_get_n_columns(self):
+        return len(self._COLUMN_TYPES)
+
+    def on_get_column_type(self, n):
+        return self._COLUMN_TYPES[n]
+
+    def on_get_iter(self, path):
+        logging.debug('on_get_iter %r %r' % (type(path), path))
+        if path[0] in self._thoughts_by_id:
+            return path[0]
+        else:
+            return None
+
+    def on_get_path(self, rowref):
+        logging.debug('on_get_path %r' % rowref)
+        return (rowref,)
+
+    def on_get_value(self, rowref, column):
+        #logging.debug('on_get_value %r %r' % (rowref, column))
+        if rowref >= len(self._thoughts):
+            return None
+        thought = self._thoughts[rowref]
+        value_tuple = thought.get_tuple()
+        return value_tuple[column]
+
+    def on_iter_next(self, rowref):
+        #logging.debug('on_iter_next %r' % rowref)
+        if rowref not in self._thoughts_by_id:
+            return None
+        thought = self._thoughts_by_id[rowref]
+        
+        index = self._thoughts.index(thought)
+        if index + 1 >= len(self._thoughts):
+            return None
+        next_thought = self._thoughts[index + 1]
+        #logging.debug('on_iter_next returning %r' % next_thought.id)
+        return next_thought.id
+
+    def on_iter_children(self, rowref):
+        logging.debug('on_iter_children %r' % rowref)
+        if rowref:
+            return None
+        if self._thoughts:
+            return self._thoughts[0].id
+        else:
+            return None
+
+    def on_iter_has_child(self, rowref):
+        return False
+
+    def on_iter_n_children(self, rowref):
+        logging.debug('on_iter_n_children %r' % rowref)
+        if rowref:
+            return 0
+        return len(self._thoughts)
+
+    def on_iter_nth_child(self, rowref, n):
+        logging.debug('on_iter_nth_child %r %r' % (rowref, n))
+        if rowref is not None:
+            return None
+        if n < len(self._thoughts):
+            return self._thoughts[n].id
+
+    def on_iter_parent(child):
+        return None
+
+class Thought(object):
+
+    def __init__(self, thought_id, name=None, x=0, y=0):
+        if thought_id is None:
+            raise ValueError('thought_id cannot be None')
+        self._id = thought_id
+        self._name = name
+        self._x = x
+        self._y = y
+
+        self.changed = dispatch.Signal()
+
+    def get_tuple(self):
+        return (self.id, self.name, self.x, self.y)
+
+    def set_id(self, new_id):
+        if self._id == new_id:
+            return
+        self._id = new_id
+        self.changed.send(self)
+
+    def get_id(self):
+        return self._id
+
+    id = property(get_id, set_id)
+
+    def set_name(self, new_name):
+        if self._name == new_name:
+            return
+        self._name = new_name
+        self.changed.send(self)
+
+    def get_name(self):
+        return self._name
+
+    name = property(get_name, set_name)
+
+    def set_x(self, new_x):
+        if self._x == new_x:
+            return
+        self._x = new_x
+        self.changed.send(self)
+
+    def get_x(self):
+        return self._x
+
+    x = property(get_x, set_x)
+
+    def set_y(self, new_y):
+        if self._y == new_y:
+            return
+        self._y = new_y
+        self.changed.send(self)
+
+    def get_y(self):
+        return self._y
+
+    y = property(get_y, set_y)
+
diff --git a/setup.py b/setup.py
new file mode 100755
index 0000000..fae74b8
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python
+
+# Copyright (C) 2006, Red Hat, Inc.
+#
+# 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+
+from sugar.activity import bundlebuilder
+
+bundlebuilder.start()
+
diff --git a/treeview.py b/treeview.py
new file mode 100644
index 0000000..42fdbf4
--- /dev/null
+++ b/treeview.py
@@ -0,0 +1,75 @@
+# Copyright (C) 2009, Tomeu Vizoso
+#
+# 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+
+import logging
+from gettext import gettext as _
+
+import gtk
+
+class TreeView(gtk.ScrolledWindow):
+    __gtype_name__ = 'MindMapTreeView'
+
+    def __init__(self, model):
+        gtk.ScrolledWindow.__init__(self)
+
+        self.props.hscrollbar_policy = gtk.POLICY_AUTOMATIC
+        self.props.vscrollbar_policy = gtk.POLICY_AUTOMATIC
+
+        self._tree_view = gtk.TreeView(model=model)
+        self.add(self._tree_view)
+        self._tree_view.show()
+
+        cell = gtk.CellRendererText()
+        column = gtk.TreeViewColumn(_('Id'), cell, text=0)
+        self._tree_view.append_column(column)
+
+        cell = gtk.CellRendererText()
+        cell.connect('edited', self.__name_edited_cb)
+        cell.props.editable = True
+
+        column = gtk.TreeViewColumn(_('Name'), cell, text=1)
+        self._tree_view.append_column(column)
+        self._tree_view.set_search_column(1)
+
+        cell = gtk.CellRendererText()
+        cell.connect('edited', self.__x_edited_cb)
+        cell.props.editable = True
+
+        column = gtk.TreeViewColumn(_('x'), cell, text=2)
+        self._tree_view.append_column(column)
+
+        cell = gtk.CellRendererText()
+        cell.connect('edited', self.__y_edited_cb)
+        cell.props.editable = True
+
+        column = gtk.TreeViewColumn(_('y'), cell, text=3)
+        self._tree_view.append_column(column)
+
+        # TODO: should be calculated based on the text size
+        self.set_size_request(200, -1)
+
+    def __name_edited_cb(self, cell_renderer, path, new_text):
+        thought = self._tree_view.props.model.get_thought(path[0])
+        thought.name = new_text
+
+    def __x_edited_cb(self, cell_renderer, path, new_text):
+        thought = self._tree_view.props.model.get_thought(path[0])
+        thought.x = int(new_text)
+
+    def __y_edited_cb(self, cell_renderer, path, new_text):
+        thought = self._tree_view.props.model.get_thought(path[0])
+        thought.y = int(new_text)
+
diff --git a/view.py b/view.py
new file mode 100644
index 0000000..b7b1914
--- /dev/null
+++ b/view.py
@@ -0,0 +1,268 @@
+# Copyright (C) 2009, Tomeu Vizoso
+#
+# 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+
+import logging
+from gettext import gettext as _
+
+import gobject
+import gtk
+
+# We'd rather not depend on sugar in this class
+from sugar.graphics import style
+
+class MindMapView(gtk.DrawingArea):
+    
+    def __init__(self, model=None):
+        self._model = None
+        self._row_changed_sid = None
+        self._row_deleted_sid = None
+        self._row_inserted_sid = None
+        self._thought_views = None
+
+        gobject.GObject.__init__(self)
+
+        self.connect('expose-event', self.__expose_event_cb)
+
+        if model is not None:
+            self.model = model
+
+        # DND stuff
+        self._pressed_button = None
+        self._press_start_x = None
+        self._press_start_y = None
+        self._last_clicked_thought = None
+        self.drag_source_set(0, [], 0)
+        self.add_events(gtk.gdk.BUTTON_PRESS_MASK |
+                        gtk.gdk.POINTER_MOTION_HINT_MASK)
+        self.connect('motion-notify-event', self.__motion_notify_event_cb)
+        self.connect('button-press-event', self.__button_press_event_cb)
+        self.connect('drag-end', self.__drag_end_cb)
+        self.connect('drag-data-get', self.__drag_data_get_cb)
+        self.connect('drag-data-received', self.__drag_data_received_cb)
+
+        self.drag_dest_set(gtk.DEST_DEFAULT_MOTION |
+                            gtk.DEST_DEFAULT_HIGHLIGHT |
+                            gtk.DEST_DEFAULT_DROP,
+                            [('application/x-thought', 0, 0)],
+                            gtk.gdk.ACTION_MOVE)
+
+    def set_model(self, new_model):
+        logging.debug('set_model %r' % new_model)
+        if self._model == new_model:
+            return
+
+        if self._model is not None:
+            self._model.disconnect(self._row_changed_sid)
+            self._model.disconnect(self._row_deleted_sid)
+            self._model.disconnect(self._row_inserted_sid)
+            
+        self._model = new_model
+
+        if self._model is not None:
+            self._row_changed_sid = \
+                    self._model.connect('row-changed', self.__row_changed_cb)
+            self._row_deleted_sid = \
+                    self._model.connect('row-deleted', self.__row_deleted_cb)
+            self._row_inserted_sid = \
+                    self._model.connect('row-inserted', self.__row_inserted_cb)
+
+            self._thought_views = []
+            for thought_model in self._model.get_thoughts():
+                though_view = ThoughtView(thought_model)
+                self._thought_views.append(though_view)
+
+    def get_model(self):
+        return self._model
+
+    model = property(get_model, set_model)
+
+    def __expose_event_cb(self, widget, event):
+        logging.debug('expose %r' % self._model)
+        if self._model is None or not self._model:
+            return
+
+        context = self.window.cairo_create()
+
+        rect = self.get_allocation()
+        rect.x = 0
+        rect.y = 0
+        logging.debug('do_expose_event %r' % ((rect.x, rect.y, rect.width, rect.height),))
+
+        context.rectangle(event.area.x, event.area.y,
+                          event.area.width, event.area.height)
+        context.clip()
+
+        context.set_source_rgb(1.0, 1.0, 1.0)
+        context.paint()
+
+        for thought_view in self._thought_views:
+            if thought_view.overlaps(event.area):
+                context.save()
+                thought_view.draw(context)
+                context.restore()
+
+        return False
+
+    def _invalidate_whole_area(self):
+        alloc = self.get_allocation()
+        rect = gtk.gdk.Rectangle(0, 0, alloc.width, alloc.height)
+        self.window.invalidate_rect(rect, True)
+        self.window.process_updates(True)
+
+    def __row_changed_cb(self, model, path, iter):
+        logging.debug('__row_changed_cb %r' % path)
+        self._invalidate_whole_area()
+
+    def __row_inserted_cb(self, model, path, iter):
+        logging.debug('__row_inserted_cb %r' % path)
+
+        thought_model = model.get_thought(path[0])
+        though_view = ThoughtView(thought_model)
+        self._thought_views.append(though_view)
+
+        self._invalidate_whole_area()
+
+    def __row_deleted_cb(self, model, path):
+        logging.debug('__row_deleted_cb %r' % path)
+
+        for thought_view in self._thought_views:
+            if thought_view.model.id == path[0]:
+                self._thought_views.remove(thought_view)
+                break
+
+        self._invalidate_whole_area()
+
+    # DND methods
+    def __motion_notify_event_cb(self, widget, event):
+        if not self._pressed_button:
+            return True
+        
+        # if the mouse button is not pressed, no drag should occurr
+        if not event.state & gtk.gdk.BUTTON1_MASK:
+            self._pressed_button = None
+            return True
+
+        logging.debug('motion_notify_event_cb')
+
+        if event.is_hint:
+            x, y, state_ = event.window.get_pointer()
+        else:
+            x = event.x
+            y = event.y
+
+        if widget.drag_check_threshold(int(self._press_start_x),
+                                       int(self._press_start_y),
+                                       int(x),
+                                       int(y)):
+            context_ = widget.drag_begin([('application/x-thought', 0, 0)],
+                                         gtk.gdk.ACTION_MOVE,
+                                         1,
+                                         event)
+        return True
+
+    def __drag_end_cb(self, widget, drag_context):
+        logging.debug('drag_end_cb')
+        self._pressed_button = None
+        self._press_start_x = None
+        self._press_start_y = None
+        self._last_clicked_thought = None
+
+    def __drag_data_get_cb(self, widget, context, selection, target_type,
+                          event_time):
+        logging.debug('drag_data_get_cb: requested target ' + selection.target)
+
+        thought_id = self._last_clicked_thought.model.id
+        selection.set(selection.target, 8, str(thought_id))
+
+    def __button_press_event_cb(self, widget, event):
+        logging.debug('button_press_event_cb')
+
+        if event.button == 1 and event.type == gtk.gdk.BUTTON_PRESS:
+            self._last_clicked_thought = \
+                    self._get_thought_at_coords(event.x, event.y)
+            if self._last_clicked_thought is not None:
+                self._pressed_button = event.button
+                self._press_start_x = event.x
+                self._press_start_y = event.y
+
+        return False
+
+    def _get_thought_at_coords(self, x, y):
+        for thought in self._thought_views:
+            thought_x = thought.model.x
+            thought_y = thought.model.y
+            width, height = thought.get_size()
+
+            if x >= thought_x and (x <= thought_x + width) and      \
+                    y >= thought_y and (y <= thought_y + height):
+                return thought
+        return None
+
+    def __drag_data_received_cb(self, widget, drag_context, x, y,
+                                selection_data, info, time):
+        thought_id = int(selection_data.data)
+        for thought in self._thought_views:
+            if thought.model.id == thought_id:
+                thought.model.x = x
+                thought.model.y = y
+                break
+
+class ThoughtView(object):
+
+    _PADDING = style.zoom(10)
+
+    def __init__(self, model):
+        self.model = model
+        self._last_width = 0
+        self._last_height = 0
+
+    def draw(self, context):
+        if self.model.name is None or not self.model.name:
+            name = _('Unnamed')
+        else:
+            name = self.model.name
+
+        context.save()
+        context.set_source_rgb(0, 0, 0)
+        layout = context.create_layout()
+        layout.set_text(name)
+
+        width, height = layout.get_pixel_size()
+
+        x, y = self.model.x + self._PADDING, self.model.y + self._PADDING
+        context.translate(x, y)
+        context.show_layout(layout)
+        context.restore()
+
+        width += self._PADDING * 2
+        height += self._PADDING * 2
+
+        context.save()
+        context.set_line_width(1)
+        context.set_source_rgb(0.2, 0.2, 0.2)
+        context.rectangle(self.model.x, self.model.y, width, height)
+        context.stroke()
+        context.restore()
+        
+        self._last_width = width
+        self._last_height = height
+
+    def overlaps(self, rect):
+        return True
+
+    def get_size(self, context=None):
+        return self._last_width, self._last_height
+