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search.py
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search.py
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#
# Kiwi: a Framework and Enhanced Widgets for Python
#
# Copyright (C) 2007 Async Open Source
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
#
# Author(s): Johan Dahlin <jdahlin@async.com.br>
#
"""
Search related widgets
"""
import datetime
from decimal import Decimal
import gettext
import sys
import gobject
import gtk
from kiwi import ValueUnset
from kiwi.component import implements
from kiwi.currency import currency
from kiwi.db.query import (NumberQueryState, StringQueryState,
DateQueryState, DateIntervalQueryState,
NumberIntervalQueryState, BoolQueryState,
QueryExecuter)
from kiwi.enums import SearchFilterPosition
from kiwi.interfaces import ISearchFilter
from kiwi.python import enum
from kiwi.ui.delegates import SlaveDelegate
from kiwi.ui.lazyobjectlist import (LazyObjectListUpdater,
LazySummaryLabel)
from kiwi.ui.objectlist import (ObjectList, ObjectTree,
SummaryLabel, SearchColumn)
from kiwi.ui.widgets.checkbutton import ProxyCheckButton
from kiwi.ui.widgets.combo import ProxyComboBox
from kiwi.ui.widgets.entry import ProxyDateEntry
from kiwi.utils import gsignal
_ = lambda m: gettext.dgettext('kiwi', m)
#
# Date Search Options
#
class DateSearchOption(object):
"""
Base class for Date search options
A date search option is an interval of dates
:cvar name: name of the search option
"""
name = None
def get_today_date(self):
return datetime.date.today()
def get_interval(self):
"""
Get start and end date.
:returns: start date, end date
:rtype: datetime.date tuple
"""
class Any(DateSearchOption):
name = _('Any')
def get_interval(self):
return None, None
class Today(DateSearchOption):
name = _('Today')
def get_interval(self):
today = self.get_today_date()
return today, today
class Yesterday(DateSearchOption):
name = _('Yesterday')
def get_interval(self):
yesterday = self.get_today_date() - datetime.timedelta(days=1)
return yesterday, yesterday
class LastWeek(DateSearchOption):
name = _('Last 7 days')
def get_interval(self):
today = self.get_today_date()
return (today - datetime.timedelta(days=7), today)
class LastMonth(DateSearchOption):
name = _('Last 30 days')
def get_interval(self):
today = self.get_today_date()
year = today.year
month = today.month - 1
if not month:
month = 12
year -= 1
# Try 31 first then remove one until date() does not complain.
day = today.day
while True:
try:
start_date = datetime.date(year, month, day)
break
except ValueError:
day -= 1
return start_date, self.get_today_date()
class FixedIntervalSearchOption(DateSearchOption):
start = None
end = None
def get_interval(self):
return self.start, self.end
class FixedDateSearchOption(DateSearchOption):
date = None
def get_interval(self):
return self.date, self.date
#
# Number Search Options
#
class NumberSearchOption(object):
"""
Base class for Number search options
A number search option is an interval of numbers
:cvar name: name of the search option
:cvar numbers: how many numbers must the user input: 0, 1 or 2
"""
name = None
numbers = 0
def get_interval(self, start, end):
"""
Get start and end interval.
:returns: start, end
"""
class Between(NumberSearchOption):
name = _('Between')
numbers = 2
def get_interval(self, start, end):
return (start, end)
class EqualsTo(NumberSearchOption):
name = _('Equals to')
numbers = 1
def get_interval(self, start, end):
return (start, start)
class GreaterThan(NumberSearchOption):
name = _('Greater or Equal')
numbers = 1
def get_interval(self, start, end):
return (start, None)
class LowerThan(NumberSearchOption):
name = _('Lower or Equal')
numbers = 1
def get_interval(self, start, end):
return (None, start)
#
# String Search Options
#
class StringSearchOption(object):
pass
class Contains(StringSearchOption):
name = _('Contains')
mode = StringQueryState.CONTAINS
class DoesNotContain(StringSearchOption):
name = _('Does Not Contain')
mode = StringQueryState.NOT_CONTAINS
#
# Search Filters
#
class SearchFilter(gtk.HBox):
"""
A base class used by common search filters
"""
label = gobject.property(type=str, flags=(gobject.PARAM_READWRITE))
gsignal('changed')
gsignal('removed')
implements(ISearchFilter)
def __init__(self, label=''):
gtk.HBox.__init__(self)
self.props.label = label
self._label = label
self._remove_button = None
def _add_remove_button(self):
self._remove_button = SearchFilterButton(stock=gtk.STOCK_REMOVE)
self._remove_button.set_relief(gtk.RELIEF_NONE)
self._remove_button.set_label_visible(False)
self._remove_button.connect('clicked', self._on_remove_clicked)
self._remove_button.show()
self.pack_start(self._remove_button, False, False)
def _on_remove_clicked(self, button):
self.emit('removed')
def do_set_property(self, pspec, value):
if pspec.name == 'label':
self._label = value
else:
raise AssertionError(pspec.name)
def do_get_property(self, child, property_id, pspec):
if pspec.name == 'label':
return self._label
else:
raise AssertionError(pspec.name)
def set_label(self, label):
self._label = label
def get_state(self):
"""
Implement this in a subclass
"""
raise NotImplementedError
def get_title_label(self):
raise NotImplementedError
def get_mode_combo(self):
raise NotImplementedError
def get_description(self):
"""Returns a description of the search filter.
:returns: a string describing the search filter.
"""
raise NotImplementedError
def set_removable(self):
if self._remove_button is None:
self._add_remove_button()
class DateSearchFilter(SearchFilter):
"""
A filter which helps you to search by a date interval.
Can be customized through add_option.
"""
__gtype_name__ = 'DateSearchFilter'
class Type(enum):
(USER_DAY,
USER_INTERVAL) = range(100, 102)
def __init__(self, label=''):
"""
Create a new DateSearchFilter object.
:param label: name of the search filter
"""
self._options = {}
SearchFilter.__init__(self, label=label)
self.title_label = gtk.Label(label)
self.pack_start(self.title_label, False, False)
self.title_label.show()
self.mode = ProxyComboBox()
self.mode.connect(
'content-changed',
self._on_mode__content_changed)
self.pack_start(self.mode, False, False, 6)
self.mode.show()
self.from_label = gtk.Label(_("From:"))
self.pack_start(self.from_label, False, False)
self.from_label.show()
self.start_date = ProxyDateEntry()
self._start_changed_id = self.start_date.connect(
'content-changed', self._on_start_date__changed)
self.pack_start(self.start_date, False, False, 6)
self.start_date.show()
self.to_label = gtk.Label(_("To:"))
self.pack_start(self.to_label, False, False)
self.to_label.show()
self.end_date = ProxyDateEntry()
self._end_changed_id = self.end_date.connect(
'content-changed', self._on_end_date__changed)
self.pack_start(self.end_date, False, False, 6)
self.end_date.show()
self.add_custom_options()
for option in (Any, Today, Yesterday, LastWeek, LastMonth):
self.add_option(option)
self.mode.select_item_by_position(0)
#
# SearchFilter
#
def get_state(self):
start = self.start_date.get_date()
end = self.end_date.get_date()
if start == end:
return DateQueryState(filter=self, date=start)
return DateIntervalQueryState(filter=self, start=start, end=end)
def set_state(self, start, end=None):
self.start_date.set_date(start)
if end is not None:
self.end_date.set_date(end)
def get_title_label(self):
return self.title_label
def get_mode_combo(self):
return self.mode
def get_description(self):
desc = ''
start_date = self.start_date.get_date()
end_date = self.end_date.get_date()
if start_date:
if end_date and start_date != end_date:
desc += ' %s %s %s %s' % (_(u'from'), start_date.strftime('%x'),
_(u'to'), end_date.strftime('%x'),)
else:
desc += start_date.strftime('%x')
if desc:
return '%s %s' % (self.get_title_label().get_text(), desc,)
#
# Public API
#
def clear_options(self):
"""
Removes all previously added options
"""
self._options = {}
self.mode.clear()
def add_option(self, option_type, position=-2):
"""
Adds a date option
:param option_type: option to add
:type option_type: a :class:`DateSearchOption` subclass
"""
option = option_type()
num = len(self.mode) + position
self.mode.insert_item(num, option.name, option_type)
self._options[option_type] = option
def add_option_fixed(self, name, date, position=-2):
"""
Adds a fixed option, eg one for which date is not
possible to modify.
:param name: name of the option
:param date: fixed data
:param position: position to add the option at
"""
option_type = type('', (FixedDateSearchOption,),
dict(name=name, date=date))
self.add_option(option_type, position=position)
def add_option_fixed_interval(self, name, start, end, position=-2):
"""
Adds a fixed option interval, eg one for which the dates are not
possible to modify.
:param name: name of the option
:param start: start of the fixed interval
:param end: end of the fixed interval
:param position: position to add the option at
"""
option_type = type('', (FixedIntervalSearchOption,),
dict(name=name, start=start, end=end))
self.add_option(option_type, position=position)
def add_custom_options(self):
"""Adds the custom options 'Custom day' and 'Custom interval' which
let the user define its own interval dates.
"""
pos = len(self.mode) + 1
for name, option_type in [
(_('Custom day'), DateSearchFilter.Type.USER_DAY),
(_('Custom interval'), DateSearchFilter.Type.USER_INTERVAL)]:
self.mode.insert_item(pos, name, option_type)
pos += 1
def get_start_date(self):
"""
Get the start date.
:returns: start date
:rtype: datetime.date or None
"""
return self.start_date.get_date()
def get_end_date(self):
"""
Get the end date.
:returns: end date
:rtype: datetime.date or None
"""
return self.end_date.get_date()
def set_use_date_entries(self, use_date_entries):
"""
Toggles the visibility of the user selectable date entries
:param use_date_entries:
"""
self.from_label.props.visible = use_date_entries
self.to_label.props.visible = use_date_entries
self.start_date.props.visible = use_date_entries
self.end_date.props.visible = use_date_entries
def select(self, data=None, position=None):
"""
selects an item in the combo
Data or position can be sent in. If nothing
is sent in the first item will be selected, if any
:param data: data to select
:param position: position of data to select
"""
if data is not None and position is not None:
raise TypeError("You can't send in both data and position")
if data is None and position is None:
position = 0
if position is not None:
if len(self.mode):
self.mode.select_item_by_position(position)
elif data:
self.mode.select(data)
#
# Private
#
def _update_dates(self):
# This is called when we change mode
date_type = self.mode.get_selected_data()
if date_type is None:
return
# If we switch to a user selectable day, make sure that
# both dates are set to today
if date_type == DateSearchFilter.Type.USER_DAY:
today = datetime.date.today()
self.start_date.set_date(today)
self.end_date.set_date(today)
# And for user interval, set start to today and to tomorrow
elif date_type == DateSearchFilter.Type.USER_INTERVAL:
today = datetime.date.today()
self.start_date.set_date(today)
self.end_date.set_date(today + datetime.timedelta(days=1))
# Finally for pre-defined ones let the DateSearchOption decide what the
# values are going to be, these dates are not user editable so
# we don't need to do any checking.
else:
option = self._options.get(date_type)
assert option, (date_type, self._options)
start_date, end_date = option.get_interval()
self.start_date.set_date(start_date)
self.end_date.set_date(end_date)
def _update_sensitivity(self):
date_type = self.mode.get_selected_data()
enabled = date_type == DateSearchFilter.Type.USER_INTERVAL
self.to_label.set_sensitive(enabled)
self.end_date.set_sensitive(enabled)
enabled = (date_type == DateSearchFilter.Type.USER_INTERVAL or
date_type == DateSearchFilter.Type.USER_DAY)
self.from_label.set_sensitive(enabled)
self.start_date.set_sensitive(enabled)
def _internal_set_start_date(self, date):
self.start_date.handler_block(self._start_changed_id)
self.start_date.set_date(date)
self.start_date.handler_unblock(self._start_changed_id)
def _internal_set_end_date(self, date):
self.end_date.handler_block(self._end_changed_id)
self.end_date.set_date(date)
self.end_date.handler_unblock(self._end_changed_id)
def _restore_date_validation(self):
self.start_date.set_valid()
self.end_date.set_valid()
#
# Callbacks
#
def _on_mode__content_changed(self, mode):
self._update_dates()
self._update_sensitivity()
self._restore_date_validation()
self.emit('changed')
def _on_start_date__changed(self, start_date):
date_type = self.mode.get_selected_data()
start = start_date.get_date()
# For user days, just make sure that the date entries
# always are in sync
if date_type == DateSearchFilter.Type.USER_DAY:
if start is None:
self.start_date.set_invalid(_(u'Invalid date'))
else:
self.start_date.set_valid()
self._internal_set_end_date(start)
# Make sure that we cannot select a start date after
# the end date, be nice and increase the end date if
# the start date happen to be the same
elif date_type == DateSearchFilter.Type.USER_INTERVAL:
end = self.end_date.get_date()
if start is None:
self.start_date.set_invalid(_(u'Invalid date'))
return
if end and start >= end:
self._internal_set_end_date(start + datetime.timedelta(days=1))
self.start_date.set_valid()
def _on_end_date__changed(self, end_date):
date_type = self.mode.get_selected_data()
# We don't need to do anything for user day, since
# this the end date widget is disabled
if date_type == DateSearchFilter.Type.USER_DAY:
pass
# Make sure that we cannot select an end date before
# the start date, be nice and decrease the start date if
# the end date happen to be the same
elif date_type == DateSearchFilter.Type.USER_INTERVAL:
start = self.start_date.get_date()
end = end_date.get_date()
if end is None:
self.end_date.set_invalid(_(u'Invalid date'))
else:
self.end_date.set_valid()
if start and end and end <= start:
self._internal_set_start_date(end - datetime.timedelta(days=1))
class ComboSearchFilter(SearchFilter):
"""
- a label
- a combo with a set of predefined item to select from
"""
__gtype_name__ = 'ComboSearchFilter'
def __init__(self, label='', values=None):
"""
Create a new ComboSearchFilter object.
:param label: label of the search filter
:param values: items to put in the combo, see
:class:`kiwi.ui.widgets.combo.ProxyComboBox.prefill`
"""
self._block_updates = False
SearchFilter.__init__(self, label=label)
label = gtk.Label(label)
self.pack_start(label, False, False)
label.show()
self.title_label = label
self.combo = ProxyComboBox()
if values:
self.update_values(values)
self.combo.connect('content-changed', self._on_combo__content_changed)
self.pack_start(self.combo, False, False, 6)
self.combo.show()
#
# SearchFilter
#
def get_state(self):
value = self.combo.get_selected_data()
state = NumberQueryState(filter=self,
value=value)
if hasattr(value, 'id'):
state.value_id = value.id
return state
def set_state(self, value, value_id=None):
if value_id is not None:
for item in self.combo.get_model_items().values():
if item is None:
continue
if item.id == value_id:
value = item
break
self.select(value)
def update_values(self, values):
self._block_updates = True
self.combo.prefill(values)
self._block_updates = False
def get_title_label(self):
return self.title_label
def get_mode_combo(self):
return self.combo
def get_description(self):
desc = ''
data = self.combo.get_selected_data()
if data is not None:
desc += self.combo.get_selected_label()
return '%s %s' % (self.title_label.get_text(), desc,)
#
# Public API
#
def select(self, data):
"""
selects an item in the combo
:param data: what to select
"""
self.combo.select(data)
#
# Callbacks
#
def _on_combo__content_changed(self, mode):
if not self._block_updates:
self.emit('changed')
class BoolSearchFilter(SearchFilter):
"""
- a checkbutton
- a label
"""
__gtype_name__ = 'BoolSearchFilter'
def __init__(self, label=''):
"""
Create a new BoolSearchFilter object.
:param label: label of the search filter
"""
self._block_updates = False
SearchFilter.__init__(self, label=label)
self.button = ProxyCheckButton(label=label)
self.button.connect('content-changed', self._on_button__content_changed)
self.pack_start(self.button, False, False, 6)
self.button.show()
self.combo = False
#
# SearchFilter
#
def get_state(self):
return BoolQueryState(filter=self,
value=self.button.read())
def set_state(self, value):
if isinstance(value, bool):
self.button.set_active(value)
elif value is None or value is ValueUnset:
self.button.set_active(False)
else:
self.button.set_active(True)
def get_title_label(self):
return self.button.get_label()
def get_description(self):
return '%s: %s' % (self.get_label(), str(self.get_state()))
def get_mode_combo(self):
return None
#
# Public API
#
def check(self, data):
self.button.set_active(True)
def uncheck(self, data):
self.button.set_active(False)
#
# Callbacks
#
def _on_button__content_changed(self, mode):
if not self._block_updates:
self.emit('changed')
# Ported from evolution
# Replace with GtkEntry::placeholder-text in Gtk 3.2
class HintedEntry(gtk.Entry):
def __init__(self):
gtk.Entry.__init__(self)
self._hint_shown = False
self._hint = None
def set_hint(self, text):
self._hint = text
if self._hint_shown:
gtk.Entry.set_text(self, text)
def set_text(self, text):
if not text and not self.has_focus():
self.show_hint()
else:
self.show_text(text)
def get_text(self):
text = ""
if not self._hint_shown:
text = gtk.Entry.get_text(self)
return text
def show_hint(self):
self._hint_shown = True
gtk.Entry.set_text(self, self._hint)
self.modify_text(gtk.STATE_NORMAL,
self.get_style().text[gtk.STATE_INSENSITIVE])
def show_text(self, text):
self._hint_shown = False
gtk.Entry.set_text(self, text)
self.modify_text(gtk.STATE_NORMAL, None)
def do_grab_focus(self):
chain = gtk.Entry
if self._hint_shown:
chain = gtk.Entry.__base__
chain.do_grab_focus(self)
def do_focus_in_event(self, event):
if self._hint_shown:
self.show_text("")
return gtk.Entry.do_focus_in_event(self, event)
def do_focus_out_event(self, event):
text = self.get_text()
if not text:
self.show_hint()
return gtk.Entry.do_focus_out_event(self, event)
gobject.type_register(HintedEntry)
class StringSearchFilter(SearchFilter):
"""
- a label
- an entry
:ivar entry: the entry
:ivar label: the label
"""
def __init__(self, label, chars=0, container=None):
"""
Create a new StringSearchFilter object.
:param label: label of the search filter
:param chars: maximum number of chars used by the search entry
"""
self._container = container
SearchFilter.__init__(self, label=label)
self.title_label = gtk.Label(label)
self.pack_start(self.title_label, False, False)
self.title_label.show()
self._options = {}
self.mode = ProxyComboBox()
self.mode.connect('content-changed', self._on_mode__content_changed)
self.pack_start(self.mode, False, False, 6)
self.entry = HintedEntry()
self.entry.set_hint(_("Search"))
self.entry.show_hint()
self.entry.props.secondary_icon_sensitive = False
self.entry.set_icon_from_stock(gtk.ENTRY_ICON_PRIMARY,
gtk.STOCK_FIND)
self.entry.set_icon_from_stock(gtk.ENTRY_ICON_SECONDARY,
gtk.STOCK_CLEAR)
self.entry.set_icon_tooltip_text(gtk.ENTRY_ICON_SECONDARY,
_("Clear the search"))
self.entry.connect("icon-release", self._on_entry__icon_release)
self.entry.connect('activate', self._on_entry__activate)
self.entry.connect('changed', self._on_entry__changed)
if chars:
self.entry.set_width_chars(chars)
self.pack_start(self.entry, False, False, 6)
self.entry.show()
for option in (Contains, DoesNotContain):
self._add_option(option)
self.mode.select_item_by_position(0)
def _add_option(self, option_type, position=-2):
option = option_type()
num = abs(position)
self.mode.insert_item(num, option.name, option_type)
self._options[option_type] = option
#
# Callbacks
#
def _on_mode__content_changed(self, combo):
self.emit('changed')
def _on_entry__activate(self, entry):
self.emit('changed')
def _on_entry__changed(self, entry):
entry.props.secondary_icon_sensitive = bool(entry.get_text())
def _position_filter_menu(self, data):
window = self.entry.get_icon_window(gtk.ENTRY_ICON_PRIMARY)
x, y = window.get_origin()
y += window.get_size()[1]
border = self.entry.style_get_property('progress-border')
if border is not None:
y += border.bottom
return (x, y, True)
def _on_entry__icon_release(self, entry, icon_pos, event):
if icon_pos == gtk.ENTRY_ICON_SECONDARY:
entry.set_text("")
entry.grab_focus()
self.emit('changed')
elif icon_pos == gtk.ENTRY_ICON_PRIMARY:
# We don't need create popup filters if haven't search columns.
if (not self._container or not hasattr(self._container, 'menu') or
not self._container.menu):
return
self._container.menu.popup(None, None,
self._position_filter_menu, 0, event.time)
#
# SearchFilter
#
def get_state(self):
option = self.mode.get_selected_data()
return StringQueryState(filter=self,
text=self.entry.get_text(),
mode=option and option.mode)
def set_state(self, text, mode=None):
self.entry.set_text(text)
if mode is not None:
self.mode.select_item_by_position(mode)
def get_title_label(self):
return self.title_label
def get_mode_combo(self):
return self.mode
def get_description(self):
desc = self.entry.get_text()
if desc:
mode = self.mode.get_selected_label()
return '%s %s "%s"' % (self.title_label.get_text(), mode, desc,)
#
# Public API
#
def enable_advanced(self):
self.mode.show()
def set_label(self, label):
self.title_label.set_text(label)
class NumberSearchFilter(SearchFilter):
"""
A filter which helps you to search by a number interval.
"""
__gtype_name__ = 'NumberSearchFilter'
def __init__(self, label=''):
"""
Create a new NumberSearchFilter object.
:param label: name of the search filter
"""
self._options = {}
SearchFilter.__init__(self, label=label)
self.title_label = gtk.Label(label)
self.title_label.set_alignment(1.0, 0.5)
self.pack_start(self.title_label, False, False)
self.title_label.show()
self.mode = ProxyComboBox()
self.mode.connect('content-changed', self._on_mode__content_changed)
self.pack_start(self.mode, False, False, 6)
self.mode.show()
self.start = gtk.SpinButton(climb_rate=1.0)
self.start.get_adjustment().step_increment = 1.0
self.start.set_range(-sys.maxint - 1, sys.maxint)
self.pack_start(self.start, False, False, 6)
self.start.show()
self.start.connect_after('activate', self._on_entry__activate)
self.and_label = gtk.Label(_("And"))
self.pack_start(self.and_label, False, False)
self.and_label.show()
self.end = gtk.SpinButton(climb_rate=1.0)
self.end.get_adjustment().step_increment = 1.0
self.end.set_range(-sys.maxint - 1, sys.maxint)
self.pack_start(self.end, False, False, 6)
self.end.show()
self.end.connect_after('activate', self._on_entry__activate)
for option in (LowerThan, EqualsTo, GreaterThan, Between):
self.add_option(option)
self.mode.select_item_by_position(0)
def set_digits(self, digits):
"""
Number of decimal place to be displayed
:param digits: number of decimal places
"""
self.start.set_digits(digits)
self.end.set_digits(digits)
#
# Private
#
def _update_visibility(self):
option = self.mode.get_selected_data()
numbers = option.numbers
if numbers == 0:
self.start.hide()
self.and_label.hide()
self.end.hide()