# clipboard.py: support for cut & paste of wxGlade widgets
# $Id: clipboard.py,v 1.19 2007/07/21 11:30:29 agriggio Exp $
#
# Copyright (c) 2002-2007 Alberto Griggio <agriggio@users.sourceforge.net>
# License: MIT (see license.txt)
# THIS PROGRAM COMES WITH NO WARRANTY
#from wxPython.wx import *
import wx
# Format used by wxGlade for the clipboard.
_widget_data_format = wx.CustomDataFormat("wxglade_widget")
class _WidgetDataObject(wx.CustomDataObject):
"""\
Object representig a widget in the clipboard.
"""
def __init__(self, *args):
wx.CustomDataObject.__init__(self, _widget_data_format)
if args:
data = apply(self._widget2repr, args)
self.SetData(data)
def _widget2repr(self, *args):
"""\
Convert *args into a string and returns it.
*args contains option, flag, border, xml_str.
"""
assert len(args) == 4
return ":".join([str(elem) for elem in args])
def GetWidgetData(self):
"""\
Convert a string into option, flag, border and xml_string
and returns them in a list.
"""
ret = self.GetData().split(":", 3)
assert len(ret) == 4, _("Invalid data in the clipboard")
# remove the dirt at the end of xml_str
bound = ret[3].rfind('>')+1
ret[3] = ret[3][:bound]
for i in range(3):
# option, flag and border are integers.
ret[i] = int(ret[i])
return ret
def copy(widget):
"""\
Copies widget and all its children to the clipboard.
"""
from cStringIO import StringIO
xml_str = StringIO()
widget.node.write(xml_str, 0)
flag = widget.get_int_flag()
option = widget.get_option()
border = widget.get_border()
if wx.TheClipboard.Open():
try:
wdo = _WidgetDataObject(option, flag, border,
xml_str.getvalue())
if not wx.TheClipboard.SetData(wdo):
print _("Data can't be copied to clipboard.")
return False
return True
finally:
wx.TheClipboard.Close()
else:
print _("Clipboard can't be opened.")
return False
def cut(widget):
"""\
Copies widget and all its children to the clipboard and then
removes them.
"""
if copy(widget):
widget.remove()
return True
else:
return False
def paste(parent, sizer, pos):
"""\
Copies a widget (and all its children) from the clipboard to the given
destination (parent, sizer and position inside the sizer)
returns True if there was something to paste, False otherwise.
"""
if wx.TheClipboard.Open():
try:
if wx.TheClipboard.IsSupported(_widget_data_format):
wdo = _WidgetDataObject()
if not wx.TheClipboard.GetData(wdo):
print _("Data can't be copied from clipboard.")
return False
else:
return False
finally:
wx.TheClipboard.Close()
else:
print _("Clipboard can't be opened.")
return False
option, flag, border, xml_str = wdo.GetWidgetData()
if xml_str:
import xml_parse
try:
wx.BeginBusyCursor()
parser = xml_parse.ClipboardXmlWidgetBuilder(parent, sizer, pos,
option, flag, border)
parser.parse_string(xml_str)
return True # Widget hierarchy pasted.
finally:
wx.EndBusyCursor()
return False # There's nothing to paste.
#-----------------------------------------------------------------------------
# 2004-02-19 ALB: D&D support (thanks to Chris Liechti)
#-----------------------------------------------------------------------------
class FileDropTarget(wx.FileDropTarget):
def __init__(self, parent):
wx.FileDropTarget.__init__(self)
self.parent = parent
def OnDropFiles(self, x, y, filenames):
if len(filenames) > 1:
wx.MessageBox(_("Please only drop one file at a time"),
"wxGlade", wx.ICON_ERROR)
elif filenames:
path = filenames[0]
if self.parent.ask_save():
self.parent._open_app(path)
# end of class FileDropTarget
|