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#------------------------------------------------------------------------------
# Copyright (c) 2007, Riverbank Computing Limited
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD license.
# However, when used with the GPL version of PyQt the additional terms described in the PyQt GPL exception also apply
#
# Author: Riverbank Computing Limited
#------------------------------------------------------------------------------
""" Defines the various button editors for the PyQt user interface toolkit.
"""
#-------------------------------------------------------------------------------
# Imports:
#-------------------------------------------------------------------------------
from pyface.qt import QtCore, QtGui
from traits.api import Unicode, List, Str, on_trait_change
# FIXME: ToolkitEditorFactory is a proxy class defined here just for backward
# compatibility. The class has been moved to the
# traitsui.editors.button_editor file.
from traitsui.editors.button_editor \
import ToolkitEditorFactory
from editor import Editor
#-------------------------------------------------------------------------------
# 'SimpleEditor' class:
#-------------------------------------------------------------------------------
class SimpleEditor ( Editor ):
""" Simple style editor for a button.
"""
#---------------------------------------------------------------------------
# Trait definitions:
#---------------------------------------------------------------------------
# The button label
label = Unicode
# The list of items in a drop-down menu, if any
#menu_items = List
# The selected item in the drop-down menu.
selected_item = Str
#---------------------------------------------------------------------------
# Finishes initializing the editor by creating the underlying toolkit
# widget:
#---------------------------------------------------------------------------
def init ( self, parent ):
""" Finishes initializing the editor by creating the underlying toolkit
widget.
"""
label = self.factory.label or self.item.get_label(self.ui)
if self.factory.values_trait:
self.control = QtGui.QToolButton()
self.control.toolButtonStyle = QtCore.Qt.ToolButtonTextOnly
self.control.setText(self.string_value(label))
self.object.on_trait_change(self._update_menu, self.factory.values_trait)
self.object.on_trait_change(self._update_menu, self.factory.values_trait + "_items")
self._menu = QtGui.QMenu()
self._update_menu()
self.control.setMenu(self._menu)
else:
self.control = QtGui.QPushButton(self.string_value(label))
self._menu = None
self.control.setAutoDefault(False)
self.sync_value(self.factory.label_value, 'label', 'from')
self.control.clicked.connect(self.update_object)
self.set_tooltip()
def _label_changed(self, label):
self.control.setText(self.string_value(label))
def _update_menu(self):
self._menu.blockSignals(True)
self._menu.clear()
for item in getattr(self.object, self.factory.values_trait):
action = self._menu.addAction(item)
action.triggered.connect(lambda event, name=item: self._menu_selected(name))
self.selected_item = ""
self._menu.blockSignals(False)
def _menu_selected(self, item_name):
self.selected_item = item_name
self.label = item_name
def update_object(self):
""" Handles the user clicking the button by setting the factory value
on the object.
"""
if self.selected_item != "":
self.value = self.selected_item
else:
self.value = self.factory.value
# If there is an associated view, then display it:
if (self.factory is not None) and (self.factory.view is not None):
self.object.edit_traits( view = self.factory.view,
parent = self.control )
def update_editor(self):
""" Updates the editor when the object trait changes externally to the
editor.
"""
pass
#-------------------------------------------------------------------------------
# 'CustomEditor' class:
#-------------------------------------------------------------------------------
class CustomEditor ( SimpleEditor ):
""" Custom style editor for a button, which can contain an image.
"""
# The mapping of button styles to Qt classes.
_STYLE_MAP = {
'checkbox': QtGui.QCheckBox,
'radio': QtGui.QRadioButton,
'toolbar': QtGui.QToolButton
}
#---------------------------------------------------------------------------
# Finishes initializing the editor by creating the underlying toolkit
# widget:
#---------------------------------------------------------------------------
def init ( self, parent ):
""" Finishes initializing the editor by creating the underlying toolkit
widget.
"""
# FIXME: We ignore orientation, width_padding and height_padding.
factory = self.factory
btype = self._STYLE_MAP.get(factory.style, QtGui.QPushButton)
self.control = btype()
self.control.setText(self.string_value(factory.label))
if factory.image is not None:
self.control.setIcon(factory.image.create_icon())
QtCore.QObject.connect(self.control, QtCore.SIGNAL('clicked()'),
self.update_object )
self.set_tooltip()
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