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# Copyright (C) 2009, Aleksey Lim
#
# 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 gtk
import gobject
import logging
from sugar.graphics.palette import Invoker
_SHOW_PALETTE_TIMEOUT = 200
class TreeView(gtk.TreeView):
def __init__(self):
gtk.TreeView.__init__(self)
self._invoker = _TreeInvoker(self)
def set_cursor(self, path, column, edit=False):
if path is not None:
gtk.TreeView.set_cursor(self, path, column, edit)
def append_column(self, column):
if isinstance(column, TreeViewColumn):
column.view = self
return gtk.TreeView.append_column(self, column)
def create_palette(self):
return self._invoker.cell_palette
class TreeViewColumn(gtk.TreeViewColumn):
def __init__(self, title=None, cell=None, **kwargs):
gtk.TreeViewColumn.__init__(self, title, cell, **kwargs)
self.view = None
self._order_by = None
self.palette_cb = None
self.connect('clicked', self._clicked_cb)
def set_sort_column_id(self, field):
self.props.clickable = True
self._order_by = field
def get_sort_column_id(self):
return self._order_by
def _clicked_cb(self, column):
if not self.view:
return
if self.props.sort_indicator:
if self.props.sort_order == gtk.SORT_DESCENDING:
new_order = gtk.SORT_ASCENDING
else:
new_order = gtk.SORT_DESCENDING
else:
new_order = gtk.SORT_ASCENDING
self.view.get_model().set_order(self._order_by, new_order)
class _TreeInvoker(Invoker):
def __init__(self, tree=None):
Invoker.__init__(self)
self._position_hint = self.AT_CURSOR
self._tree = None
self.cell_palette = None
self._palette_pos = None
self._enter_timeout = None
self._enter_hid = None
self._motion_hid = None
self._leave_hid = None
self._button_hid = None
if tree:
self.attach(tree)
def get_toplevel(self):
return self._tree.get_toplevel()
def attach(self, tree):
self._tree = tree
self._enter_hid = tree.connect('enter-notify-event', self._enter_cb)
self._motion_hid = tree.connect('motion-notify-event', self._enter_cb)
self._leave_hid = tree.connect('leave-notify-event', self._leave_cb)
self._button_hid = tree.connect('button-release-event', self._button_cb)
Invoker.attach(self, tree)
def detach(self):
Invoker.detach(self)
self._tree.disconnect(self._enter_hid)
self._tree.disconnect(self._motion_hid)
self._tree.disconnect(self._leave_hid)
self._tree.disconnect(self._button_cb)
def _close_palette(self):
if self._enter_timeout:
gobject.source_remove(self._enter_timeout)
self._enter_timeout = None
self.cell_palette = None
self._palette_pos = None
def _open_palette(self, notify, force):
if self._enter_timeout:
gobject.source_remove(self._enter_timeout)
self._enter_timeout = None
coords = self._tree.convert_widget_to_bin_window_coords(
*self._tree.get_pointer())
pos = self._tree.get_path_at_pos(*coords)
if not pos:
self._close_palette()
return False
path, column, x, y = pos
if not hasattr(column, 'palette_cb') or not column.palette_cb:
self._close_palette()
return False
row = self._tree.props.model.get_row(path)
if not row:
logging.debug('_open_palette: wait for row %s' % path)
self._enter_timeout = gobject.timeout_add(500, self._open_palette,
self.notify_mouse_enter, False)
return False
palette = column.palette_cb(self._tree.props.model, row, x, y)
if not palette:
self._close_palette()
return False
if self._palette_pos != (path, column) or self.cell_palette != palette:
if self.palette:
self.palette.popdown(True)
self.palette = None
self._palette_pos = (path, column)
self.cell_palette = palette
notify()
return False
def notify_popup(self):
Invoker.notify_popup(self)
def notify_popdown(self):
Invoker.notify_popdown(self)
def _enter_cb(self, widget, event):
if self._enter_timeout:
gobject.source_remove(self._enter_timeout)
self._enter_timeout = gobject.timeout_add(_SHOW_PALETTE_TIMEOUT,
self._open_palette, self.notify_mouse_enter, False)
def _leave_cb(self, widget, event):
self.notify_mouse_leave()
self._close_palette()
def _button_cb(self, widget, event):
if event.button == 3:
return self._open_palette(self.notify_right_click, True)
else:
return False
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