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#
# Filtering UI for the simple path through the storage code.
#
# Copyright (C) 2009 Red Hat, Inc.
# All rights reserved.
#
# 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, see <http://www.gnu.org/licenses/>.
#
import gtk, gobject
import gtk.glade
import gui
import gettext
_ = lambda x: gettext.ldgettext("anaconda", x)
# The column that holds a python object containing information about the
# device in each row. This value really shouldn't be overridden.
OBJECT_COL = 0
# These columns can be overridden with the active= and visible= parameters to
# __init__. active indicates which column tracks whether the row is checked
# by default, and visible indicates which column tracks whether the row is
# seen or not.
VISIBLE_COL = 1
ACTIVE_COL = 2
# This should not be overridden. It controls whether or not a row may be
# deselected. Rows with this column set will stay in selected or not
# (whichever they were initialized to) permanently.
IMMUTABLE_COL = 3
class DeviceDisplayer(object):
def _column_toggled(self, menuItem, col):
# This is called when a selection is made in the column visibility drop
# down menu, and obviously makes a column visible (or not).
col.set_visible(not col.get_visible())
def __init__(self, store, model, view, active=ACTIVE_COL, visible=VISIBLE_COL):
self.store = store
self.model = model
self.view = view
self.menu = None
self.active = active
self.visible = visible
def addColumn(self, title, num, displayed=True):
cell = gtk.CellRendererText()
cell.set_property("yalign", 0)
col = gtk.TreeViewColumn(title, cell, text=num, active=self.active)
col.set_visible(displayed)
col.set_expand(True)
col.set_resizable(True)
self.view.append_column(col)
# This needs to be set on all columns or it will be impossible to sort
# by that column.
col.set_sort_column_id(num)
if self.menu:
# Add a new entry to the drop-down menu.
item = gtk.CheckMenuItem(title)
item.set_active(displayed)
item.connect("toggled", self._column_toggled, col)
item.show()
self.menu.append(item)
def createMenu(self):
self.menu = gtk.Menu()
# Add a blank column at the (current) end of the view. This column
# exists only so we can have a header to click on and display the
# drop down allowing column configuration.
menuCol = gtk.TreeViewColumn("")
menuCol.set_clickable(True)
menuCol.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED)
menuCol.set_fixed_width(30)
menuCol.connect("clicked", lambda col, menu: menu.popup(None, None, None, 0, 0),
self.menu)
image = gui.readImageFromFile("filter-menu.png")
image.show_all()
menuCol.set_widget(image)
# Make sure the menu column gets added after all other columns so it
# will be on the far right edge.
self.view.connect("show", lambda x: self.view.append_column(menuCol))
def getStoreIter(self, row, model=None):
"""Get an iter on the underlying store that maps to a row on the
provided model. If model is None, use the default.
"""
if not model:
model = self.model
iter = model.get_iter(row)
if not iter:
return None
while not self.store.iter_is_valid(iter):
if isinstance(model, gtk.TreeModelFilter):
iter = model.convert_iter_to_child_iter(iter)
elif isinstance(model, gtk.TreeModelSort):
iter = model.convert_iter_to_child_iter(None, iter)
model = model.get_model()
return iter
def getSelected(self):
"""Return a list of all the items currently checked in the UI, or
an empty list if nothing is selected.
"""
return filter(lambda row: row[self.active], self.store)
def getNVisible(self):
"""Return the number of items currently visible in the UI."""
return len(filter(lambda row: row[self.visible], self.store))
class DeviceSelector(DeviceDisplayer):
def createSelectionCol(self, title="", radioButton=False, toggledCB=None,
membershipCB=None):
# Add a column full of checkboxes/radiobuttons in the first column of the view.
crt = gtk.CellRendererToggle()
crt.set_property("activatable", True)
crt.set_property("yalign", 0)
crt.set_radio(radioButton)
crt.connect("toggled", self._device_toggled, toggledCB, radioButton)
col = gtk.TreeViewColumn(title, crt, active=self.active)
col.set_alignment(0.75)
if not radioButton:
self.allButton = gtk.ToggleButton()
col.connect("clicked", lambda *args: self.allButton.set_active(not self.allButton.get_active()))
col.set_widget(self.allButton)
self.allButton.show_all()
self.allButton.connect("toggled", self._all_clicked, toggledCB, membershipCB)
self.view.append_column(col)
self.view.set_headers_clickable(True)
self.view.connect("row-activated", self._row_activated, toggledCB, radioButton)
def _all_clicked(self, button, toggledCB=None, membershipCB=None):
# This is called when the Add/Remove all button is checked and does
# the obvious.
def _toggle_all(model, path, iter, set):
# Don't check the boxes of rows that aren't visible or aren't part
# of the currently displayed page. We'd like the all button to
# only operate on the current page, after all.
if not model[path][self.visible] or model[path][IMMUTABLE_COL] or \
(membershipCB and not membershipCB(model[path][OBJECT_COL])):
return
# Don't try to set a row to active if it's already been checked.
# This prevents devices that have been checked before the all
# button was checked from getting double counted.
if model[path][self.active] == set:
return
model[path][self.active] = set
if toggledCB:
toggledCB(set, model[path][OBJECT_COL])
set = button.get_active()
self.store.foreach(_toggle_all, set)
def _row_activated(self, view, row, col, cb, isRadio):
# This is called when a row is double-clicked, or selected via space or
# enter. We just want to do the same as if the checkbox were clicked.
self._device_toggled(None, row, cb, isRadio)
def _device_toggled(self, button, row, cb, isRadio):
# This is called when the checkbox for a device is clicked or unclicked.
iter = self.getStoreIter(row)
if not iter:
return
storeRow = self.store.get_path(iter)
if self.store[storeRow][IMMUTABLE_COL]:
return
if isRadio:
# This is lame, but there's no other way to do it. First we have
# to uncheck everything in the store, then we check the one that
# was clicked on.
for r in self.store:
r[self.active] = False
self.store[storeRow][self.active] = True
if cb:
cb(True, self.store[storeRow][OBJECT_COL])
else:
is_checked = self.store[storeRow][self.active]
self.store[storeRow][self.active] = not is_checked
if cb:
cb(not is_checked, self.store[storeRow][OBJECT_COL])
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