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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 base PyQt classes the various styles of editors used in a
Traits-based user interface.
"""
#-------------------------------------------------------------------------------
# Imports:
#-------------------------------------------------------------------------------
from pyface.qt import QtCore, QtGui
from traits.api \
import TraitError
from traitsui.editor_factory \
import EditorFactory as BaseEditorFactory
from editor \
import Editor
#-------------------------------------------------------------------------------
# 'EditorFactory' class
# Deprecated alias for traitsui.editor_factory.EditorFactory
#-------------------------------------------------------------------------------
class EditorFactory(BaseEditorFactory):
""" Deprecated alias for traitsui.editor_factory.EditorFactory.
"""
def __init__(self, *args, **kwds):
super(EditorFactory, self).__init__(*args, **kwds)
warnings.warn("DEPRECATED: Use traitsui.editor_factory."
".EditorFactory instead.", DeprecationWarning)
#-------------------------------------------------------------------------------
# 'SimpleEditor' class:
#-------------------------------------------------------------------------------
class SimpleEditor ( Editor ):
""" Base class for simple style editors, which displays a text field
containing the text representation of the object trait value. Clicking in
the text field displays an editor-specific dialog box for changing the
value.
"""
#---------------------------------------------------------------------------
# Finishes initializing the editor by creating the underlying toolkit
# widget:
#---------------------------------------------------------------------------
def init ( self, parent ):
""" Finishes initializing the editor by creating the underlying toolkit
widget.
"""
self.control = _SimpleField(self)
self.set_tooltip()
#---------------------------------------------------------------------------
# Invokes the pop-up editor for an object trait:
#
# (Normally overridden in a subclass)
#---------------------------------------------------------------------------
def popup_editor(self):
""" Invokes the pop-up editor for an object trait.
"""
pass
#-------------------------------------------------------------------------------
# 'TextEditor' class:
#-------------------------------------------------------------------------------
class TextEditor ( Editor ):
""" Base class for text style editors, which displays an editable text
field, containing a text representation of the object trait value.
"""
#---------------------------------------------------------------------------
# Finishes initializing the editor by creating the underlying toolkit
# widget:
#---------------------------------------------------------------------------
def init ( self, parent ):
""" Finishes initializing the editor by creating the underlying toolkit
widget.
"""
self.control = QtGui.QLineEdit(self.str_value)
QtCore.QObject.connect(self.control,
QtCore.SIGNAL('editingFinished()'), self.update_object)
self.set_tooltip()
#---------------------------------------------------------------------------
# Handles the user changing the contents of the edit control:
#---------------------------------------------------------------------------
def update_object(self):
""" Handles the user changing the contents of the edit control.
"""
try:
self.value = unicode(self.control.text())
except TraitError, excp:
pass
#-------------------------------------------------------------------------------
# 'ReadonlyEditor' class:
#-------------------------------------------------------------------------------
class ReadonlyEditor ( Editor ):
""" Base class for read-only style editors, which displays a read-only text
field, containing a text representation of the object trait value.
"""
#---------------------------------------------------------------------------
# Finishes initializing the editor by creating the underlying toolkit
# widget:
#---------------------------------------------------------------------------
text_alignment_map = {
'left' : QtCore.Qt.AlignLeft,
'right' : QtCore.Qt.AlignRight,
'just' : QtCore.Qt.AlignJustify,
'top' : QtCore.Qt.AlignLeft,
'bottom' : QtCore.Qt.AlignBottom,
'vcenter' : QtCore.Qt.AlignVCenter,
'hcenter' : QtCore.Qt.AlignHCenter,
'center' : QtCore.Qt.AlignVCenter | QtCore.Qt.AlignHCenter
}
def init ( self, parent ):
""" Finishes initializing the editor by creating the underlying toolkit
widget.
"""
self.control = QtGui.QLabel(self.str_value)
if self.item.resizable is True or self.item.height != -1.0:
self.control.setSizePolicy(QtGui.QSizePolicy.Expanding,
QtGui.QSizePolicy.Expanding)
self.control.setWordWrap(True)
alignment = None
for item in self.factory.text_alignment.split(",") :
item_alignment = self.text_alignment_map.get(item, None)
if item_alignment :
if alignment :
alignment = alignment | item_alignment
else :
alignment = item_alignment
if alignment :
self.control.setAlignment(alignment)
self.set_tooltip()
#---------------------------------------------------------------------------
# Updates the editor when the object trait changes external to the editor:
#---------------------------------------------------------------------------
def update_editor ( self ):
""" Updates the editor when the object trait changes externally to the
editor.
"""
self.control.setText(self.str_value)
#-------------------------------------------------------------------------------
# '_SimpleField' class:
#-------------------------------------------------------------------------------
class _SimpleField(QtGui.QLineEdit):
def __init__(self, editor):
QtGui.QLineEdit.__init__(self, editor.str_value)
self.setReadOnly(True)
self._editor = editor
def mouseReleaseEvent(self, e):
QtGui.QLineEdit.mouseReleaseEvent(self, e)
if e.button() == QtCore.Qt.LeftButton:
self._editor.popup_editor()
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