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Commit	Line	Data
	1	# 11/20/2003 - Jeff Grimmett (grimmtooth@softhome.net)
	2	#
	3	# o Updated for wx namespace
	4	#
	5	# 11/29/2003 - Jeff Grimmett (grimmtooth@softhome.net)
	6	#
	7	# o wx.ListItem.GetText() returns a wxString pointer, not the text.
	8	#
	9
	10	import wx
	11	import images
	12
	13	#----------------------------------------------------------------------
	14
	15	class TestVirtualList(wx.ListCtrl):
	16	def __init__(self, parent, log):
	17	wx.ListCtrl.__init__(
	18	self, parent, -1,
	19	style=wx.LC_REPORT\|wx.LC_VIRTUAL\|wx.LC_HRULES\|wx.LC_VRULES
	20	)
	21
	22	self.log = log
	23
	24	self.il = wx.ImageList(16, 16)
	25	self.idx1 = self.il.Add(images.getSmilesBitmap())
	26	self.SetImageList(self.il, wx.IMAGE_LIST_SMALL)
	27
	28
	29	self.InsertColumn(0, "First")
	30	self.InsertColumn(1, "Second")
	31	self.InsertColumn(2, "Third")
	32	self.SetColumnWidth(0, 175)
	33	self.SetColumnWidth(1, 175)
	34	self.SetColumnWidth(2, 175)
	35
	36	self.SetItemCount(1000000)
	37
	38	self.attr1 = wx.ListItemAttr()
	39	self.attr1.SetBackgroundColour("yellow")
	40
	41	self.attr2 = wx.ListItemAttr()
	42	self.attr2.SetBackgroundColour("light blue")
	43
	44	self.Bind(wx.EVT_LIST_ITEM_SELECTED, self.OnItemSelected)
	45	self.Bind(wx.EVT_LIST_ITEM_ACTIVATED, self.OnItemActivated)
	46	self.Bind(wx.EVT_LIST_ITEM_DESELECTED, self.OnItemDeselected)
	47
	48
	49	def OnItemSelected(self, event):
	50	self.currentItem = event.m_itemIndex
	51	self.log.WriteText('OnItemSelected: "%s", "%s", "%s", "%s"\n' %
	52	(self.currentItem,
	53	self.GetItemText(self.currentItem),
	54	self.getColumnText(self.currentItem, 1),
	55	self.getColumnText(self.currentItem, 2)))
	56
	57	def OnItemActivated(self, event):
	58	self.currentItem = event.m_itemIndex
	59	self.log.WriteText("OnItemActivated: %s\nTopItem: %s\n" %
	60	(self.GetItemText(self.currentItem), self.GetTopItem()))
	61
	62	def getColumnText(self, index, col):
	63	item = self.GetItem(index, col)
	64	return item.GetText()
	65
	66	def OnItemDeselected(self, evt):
	67	self.log.WriteText("OnItemDeselected: %s" % evt.m_itemIndex)
	68
	69
	70	#---------------------------------------------------
	71	# These methods are callbacks for implementing the
	72	# "virtualness" of the list... Normally you would
	73	# determine the text, attributes and/or image based
	74	# on values from some external data source, but for
	75	# this demo we'll just calculate them
	76	def OnGetItemText(self, item, col):
	77	return "Item %d, column %d" % (item, col)
	78
	79	def OnGetItemImage(self, item):
	80	if item % 3 == 0:
	81	return self.idx1
	82	else:
	83	return -1
	84
	85	def OnGetItemAttr(self, item):
	86	if item % 3 == 1:
	87	return self.attr1
	88	elif item % 3 == 2:
	89	return self.attr2
	90	else:
	91	return None
	92
	93
	94	#----------------------------------------------------------------------
	95
	96	def runTest(frame, nb, log):
	97	win = TestVirtualList(nb, log)
	98	return win
	99
	100	#----------------------------------------------------------------------
	101
	102
	103	overview = """\
	104	This example demonstrates the ListCtrl's Virtual List features. A Virtual list
	105	can contain any number of cells, but data is not loaded into the control itself.
	106	It is loaded on demand via virtual methods <code>OnGetItemText(), OnGetItemImage()</code>,
	107	and <code>OnGetItemAttr()</code>. This greatly reduces the amount of memory required
	108	without limiting what can be done with the list control itself.
	109	"""
	110
	111
	112
	113	if __name__ == '__main__':
	114	import sys,os
	115	import run
	116	run.main(['', os.path.basename(sys.argv[0])])
	117