# ITransferAdviseSink implementation template

import pythoncom
from win32com.shell import shell, shellcon
from win32com.server.policy import DesignatedWrapPolicy

tsf_flags = list((k,v) for k,v in shellcon.__dict__.items() if k.startswith('TSF_'))
def decode_flags(flags):
		if flags == 0:
			return 'TSF_NORMAL'
		flag_txt = ''
		for k,v in tsf_flags:
			if flags & v:
				if flag_txt:
					flag_txt = flag_txt + '|' + k
				else:
					flag_txt = k
		return flag_txt

TRANSFER_ADVISE_STATES = {}
for k,v in shellcon.__dict__.items():
	if k.startswith('TS_'):
		TRANSFER_ADVISE_STATES[v] = k

def decode_flags(flags):
		if flags == 0:
			return 'TSF_NORMAL'
		flag_txt = ''
		for k,v in tsf_flags:
			if flags & v:
				if flag_txt:
					flag_txt = flag_txt + '|' + k
				else:
					flag_txt = k
		return flag_txt
		
class TransferAdviseSink(DesignatedWrapPolicy):
	_com_interfaces_ = [shell.IID_ITransferAdviseSink]
	_public_methods_ = [
		"UpdateProgress", "UpdateTransferState", "ConfirmOverwrite",
		"ConfirmEncryptionLoss", "FileFailure", "SubStreamFailure", "PropertyFailure"
		]

	def __init__(self):
		self._wrap_(self)

	def UpdateProgress(self, SizeCurrent, SizeTotal, FilesCurrent, FilesTotal, FoldersCurrent, FoldersTotal):
		print ('UpdateProgress - processed so far:')
		print ('\t %s out of %s bytes' %(SizeCurrent, SizeTotal))
		print ('\t %s out of %s files' %(FilesCurrent, FilesTotal))
		print ('\t %s out of %s folders' %(FoldersCurrent, FoldersTotal))

	def	UpdateTransferState(self, State):
		print ('Current state: ', TRANSFER_ADVISE_STATES.get(State, '??? Unknown state %s ???' %State))

	def	ConfirmOverwrite(self, Source, DestParent , Name):
		print ('ConfirmOverwrite: ', Source.GetDisplayName(shellcon.SHGDN_FORPARSING),
			DestParent.GetDisplayName(shellcon.SHGDN_FORPARSING),
			Name)

	def	ConfirmEncryptionLoss(self, Source):
		print ('ConfirmEncryptionLoss:', Source.GetDisplayName(shellcon.SHGDN_FORPARSING))
		
	def	FileFailure(self, Item, ItemName , Error):
		print ('FileFailure:', Item.GetDisplayName(shellcon.SHGDN_FORPARSING), ItemName)
		
	def	SubStreamFailure(self, Item, StreamName , Error):
		print ('SubStreamFailure:\n')
		
	def	PropertyFailure(self, Item, key , Error):
		print ('PropertyFailure:\n')

def CreateSink():
    return pythoncom.WrapObject(TransferAdviseSink(), shell.IID_ITransferAdviseSink, shell.IID_ITransferAdviseSink)
