1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
#------------------------------------------------------------------------------
#
# Copyright (c) 2005, Enthought, Inc.
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in enthought/LICENSE.txt and may be redistributed only
# under the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
#
# Author: David C. Morrill
# Date: 04/13/2005
#
#------------------------------------------------------------------------------
""" Defines a drop target editor for the wxPython user interface toolkit. A
drop target editor handles drag and drop operations as a drop target.
"""
#-------------------------------------------------------------------------------
# Imports:
#-------------------------------------------------------------------------------
import wx
# FIXME: ToolkitEditorFactory is a proxy class defined here just for backward
# compatibility. The class has been moved to the
# traitsui.editors.drop_editor file.
from traitsui.editors.drop_editor \
import ToolkitEditorFactory
from pyface.wx.drag_and_drop \
import PythonDropTarget, clipboard
from text_editor \
import SimpleEditor as Editor
from constants \
import DropColor
#-------------------------------------------------------------------------------
# 'SimpleEditor' class:
#-------------------------------------------------------------------------------
class SimpleEditor ( Editor ):
""" Simple style of drop editor, which displays a read-only text field that
contains the string representation of the object trait's value.
"""
# Background color when it is OK to drop objects.
ok_color = DropColor
#---------------------------------------------------------------------------
# Finishes initializing the editor by creating the underlying toolkit
# widget:
#---------------------------------------------------------------------------
def init ( self, parent ):
""" Finishes initializing the editor by creating the underlying toolkit
widget.
"""
if self.factory.readonly:
self.control = wx.TextCtrl( parent, -1, self.str_value,
style = wx.TE_READONLY )
self.set_tooltip()
else:
super( SimpleEditor, self ).init( parent )
self.control.SetBackgroundColour( self.ok_color )
self.control.SetDropTarget( PythonDropTarget( self ) )
#---------------------------------------------------------------------------
# Returns the text representation of a specified object trait value:
#---------------------------------------------------------------------------
def string_value ( self, value ):
""" Returns the text representation of a specified object trait value.
"""
if value is None:
return ''
return str( value )
#---------------------------------------------------------------------------
# Handles an error that occurs while setting the object's trait value:
#---------------------------------------------------------------------------
def error ( self, excp ):
""" Handles an error that occurs while setting the object's trait value.
"""
pass
#----- Drag and drop event handlers: -------------------------------------------
#---------------------------------------------------------------------------
# Handles a Python object being dropped on the control:
#---------------------------------------------------------------------------
def wx_dropped_on ( self, x, y, data, drag_result ):
""" Handles a Python object being dropped on the tree.
"""
klass = self.factory.klass
value = data
if self.factory.binding:
value = getattr( clipboard, 'node', None )
if (klass is None) or isinstance( data, klass ):
self._no_update = True
try:
if hasattr( value, 'drop_editor_value' ):
self.value = value.drop_editor_value()
else:
self.value = value
if hasattr( value, 'drop_editor_update' ):
value.drop_editor_update( self.control )
else:
self.control.SetValue( self.str_value )
finally:
self._no_update = False
return drag_result
return wx.DragNone
#---------------------------------------------------------------------------
# Handles a Python object being dragged over the control:
#---------------------------------------------------------------------------
def wx_drag_over ( self, x, y, data, drag_result ):
""" Handles a Python object being dragged over the tree.
"""
if self.factory.binding:
data = getattr( clipboard, 'node', None )
try:
self.object.base_trait( self.name ).validate( self.object,
self.name, data )
return drag_result
except:
return wx.DragNone
# Define the Text and ReadonlyEditor for use by the editor factory.
TextEditor = ReadonlyEditor = SimpleEditor
### EOF ########################################################################
|
