Added sending cancellation

src/bitmessageqt/__init__.py

@@ -369,13 +369,16 @@ class MyForm(settingsmixin.SMainWindow):
         # Popup menu for the Sent page
         self.ui.sentContextMenuToolbar = QtGui.QToolBar()
         # Actions
-        self.actionTrashSentMessage = self.ui.sentContextMenuToolbar.addAction(
-            _translate(
-                "MainWindow", "Move to Trash"), self.on_action_SentTrash)
         self.actionSentClipboard = self.ui.sentContextMenuToolbar.addAction(
             _translate(
                 "MainWindow", "Copy destination address to clipboard"),
             self.on_action_SentClipboard)
+        self.actionTrashSentMessage = self.ui.sentContextMenuToolbar.addAction(
+            _translate(
+                "MainWindow", "Move to Trash"), self.on_action_SentTrash)
+        self.actionCancelSending = self.ui.sentContextMenuToolbar.addAction(
+            _translate(
+                "MainWindow", "Cancel sending"), self.on_action_CancelSending)
         self.actionForceSend = self.ui.sentContextMenuToolbar.addAction(
             _translate(
                 "MainWindow", "Force send"), self.on_action_ForceSend)
@@ -778,13 +781,15 @@ class MyForm(settingsmixin.SMainWindow):
         QtCore.QObject.connect(self.UISignalThread, QtCore.SIGNAL(
             "updateStatusBar(PyQt_PyObject)"), self.updateStatusBar)
         QtCore.QObject.connect(self.UISignalThread, QtCore.SIGNAL(
-            "updateSentItemStatusByToAddress(PyQt_PyObject,PyQt_PyObject)"), self.updateSentItemStatusByToAddress)
+            "updateSentItemStatusByToAddress(PyQt_PyObject,PyQt_PyObject,PyQt_PyObject)"), self.updateSentItemStatusByToAddress)
         QtCore.QObject.connect(self.UISignalThread, QtCore.SIGNAL(
-            "updateSentItemStatusByAckdata(PyQt_PyObject,PyQt_PyObject)"), self.updateSentItemStatusByAckdata)
+            "updateSentItemStatusByAckdata(PyQt_PyObject,PyQt_PyObject,PyQt_PyObject)"), self.updateSentItemStatusByAckdata)
         QtCore.QObject.connect(self.UISignalThread, QtCore.SIGNAL(
             "displayNewInboxMessage(PyQt_PyObject,PyQt_PyObject,PyQt_PyObject,PyQt_PyObject,PyQt_PyObject)"), self.displayNewInboxMessage)
         QtCore.QObject.connect(self.UISignalThread, QtCore.SIGNAL(
             "displayNewSentMessage(PyQt_PyObject,PyQt_PyObject,PyQt_PyObject,PyQt_PyObject,PyQt_PyObject,PyQt_PyObject)"), self.displayNewSentMessage)
+        QtCore.QObject.connect(self.UISignalThread, QtCore.SIGNAL(
+            "deleteSentItemByAckData(PyQt_PyObject)"), self.deleteSentItemByAckData)
         QtCore.QObject.connect(self.UISignalThread, QtCore.SIGNAL(
             "setStatusIcon(PyQt_PyObject)"), self.setStatusIcon)
         QtCore.QObject.connect(self.UISignalThread, QtCore.SIGNAL(
@@ -1102,6 +1107,8 @@ class MyForm(settingsmixin.SMainWindow):
         elif status == 'ackreceived':
             statusText = _translate("MainWindow", "Acknowledgement of the message received %1").arg(
                 l10n.formatTimestamp(lastactiontime))
+        elif status == "msgcanceled":
+            statusText = _translate("MainWindow", "Message canceled.")
         elif status == 'broadcastqueued':
             statusText = _translate(
                 "MainWindow", "Broadcast queued.")
@@ -1111,6 +1118,8 @@ class MyForm(settingsmixin.SMainWindow):
         elif status == 'broadcastsent':
             statusText = _translate("MainWindow", "Broadcast on %1").arg(
                 l10n.formatTimestamp(lastactiontime))
+        elif status == "broadcastcanceled":
+            statusText = _translate("MainWindow", "Broadcast canceled.")
         elif status == 'toodifficult':
             statusText = _translate("MainWindow", "Problem: The work demanded by the recipient is more difficult than you are willing to do. %1").arg(
                 l10n.formatTimestamp(lastactiontime))
@@ -1764,7 +1773,7 @@ class MyForm(settingsmixin.SMainWindow):
             self.unreadCount = count
         return self.unreadCount
 
-    def updateSentItemStatusByToAddress(self, toAddress, textToDisplay):
+    def updateSentItemStatusByToAddress(self, status, toAddress, textToDisplay):
         for sent in [self.ui.tableWidgetInbox, self.ui.tableWidgetInboxSubscriptions, self.ui.tableWidgetInboxChans]:
             treeWidget = self.widgetConvert(sent)
             if self.getCurrentFolder(treeWidget) != "sent":
@@ -1775,6 +1784,16 @@ class MyForm(settingsmixin.SMainWindow):
             for i in range(sent.rowCount()):
                 rowAddress = sent.item(i, 0).data(QtCore.Qt.UserRole)
                 if toAddress == rowAddress:
+                    tableAckData = str(sent.item(i, 3).data(QtCore.Qt.UserRole).toPyObject())
+
+                    count = sqlQuery("""
+                        SELECT COUNT(*) FROM "sent"
+                        WHERE "ackdata" == ? AND "status" == ?;
+                    """, tableAckData, status)[0][0]
+
+                    if count == 0:
+                        continue
+
                     sent.item(i, 3).setToolTip(textToDisplay)
                     try:
                         newlinePosition = textToDisplay.indexOf('\n')
@@ -1786,7 +1805,15 @@ class MyForm(settingsmixin.SMainWindow):
                     else:
                         sent.item(i, 3).setText(textToDisplay)
 
-    def updateSentItemStatusByAckdata(self, ackdata, textToDisplay):
+    def updateSentItemStatusByAckdata(self, status, ackdata, textToDisplay):
+        count = sqlQuery("""
+            SELECT COUNT(*) FROM "sent"
+            WHERE "ackdata" == ? AND "status" == ?;
+        """, ackdata, status)[0][0]
+
+        if count == 0:
+            return
+
         if type(ackdata) is str:
             ackdata = QtCore.QByteArray(ackdata)
         for sent in [self.ui.tableWidgetInbox, self.ui.tableWidgetInboxSubscriptions, self.ui.tableWidgetInboxChans]:
@@ -2356,6 +2383,37 @@ class MyForm(settingsmixin.SMainWindow):
                 dialogs.EmailGatewayDialog(
                     self, BMConfigParser(), acct).exec_()
 
+    def deleteSentItemByAckData(self, ackData):
+        ackData = QtCore.QByteArray(ackData)
+
+        for tableWidget in [
+            self.ui.tableWidgetInbox,
+            self.ui.tableWidgetInboxSubscriptions,
+            self.ui.tableWidgetInboxChans
+        ]:
+            treeWidget = self.widgetConvert(tableWidget)
+
+            if self.getCurrentFolder(treeWidget) != "sent":
+                continue
+
+            i = 0
+
+            while i < tableWidget.rowCount():
+                tableAckData = tableWidget.item(i, 3).data(QtCore.Qt.UserRole).toPyObject()
+
+                if ackData == tableAckData:
+                    textEdit = self.getCurrentMessageTextedit()
+
+                    if textEdit is not False:
+                        textEdit.setPlainText("")
+
+                    tableWidget.removeRow(i)
+                    tableWidget.selectRow(max(0, i - 1))
+
+                    self.updateStatusBar(_translate("MainWindow", "Moved items to trash."))
+                else:
+                    i += 1
+
     def click_pushButtonAddAddressBook(self, dialog=None):
         if not dialog:
             dialog = dialogs.AddAddressDialog(self)
@@ -3286,47 +3344,95 @@ class MyForm(settingsmixin.SMainWindow):
             logger.exception('Message not saved', exc_info=True)
             self.updateStatusBar(_translate("MainWindow", "Write error."))
 
-    # Send item on the Sent tab to trash
     def on_action_SentTrash(self):
-        currentRow = 0
-        unread = False
         tableWidget = self.getCurrentMessagelist()
+
         if not tableWidget:
             return
-        folder = self.getCurrentFolder()
-        shifted = (QtGui.QApplication.queryKeyboardModifiers() & QtCore.Qt.ShiftModifier) > 0
-        while tableWidget.selectedIndexes() != []:
-            currentRow = tableWidget.selectedIndexes()[0].row()
-            ackdataToTrash = str(tableWidget.item(
-                currentRow, 3).data(QtCore.Qt.UserRole).toPyObject())
-            if folder == "trash" or shifted:
-                sqlExecute('''DELETE FROM sent WHERE ackdata=?''', ackdataToTrash)
-            else:
-                sqlExecute('''UPDATE sent SET folder='trash' WHERE ackdata=?''', ackdataToTrash)
-            if tableWidget.item(currentRow, 0).unread:
-                self.propagateUnreadCount(tableWidget.item(currentRow, 1 if tableWidget.item(currentRow, 1).type == AccountMixin.SUBSCRIPTION else 0).data(QtCore.Qt.UserRole), folder, self.getCurrentTreeWidget(), -1)
-            self.getCurrentMessageTextedit().setPlainText("")
-            tableWidget.removeRow(currentRow)
-            self.updateStatusBar(_translate(
-                "MainWindow", "Moved items to trash."))
 
-        self.ui.tableWidgetInbox.selectRow(
+        shiftPressed = QtGui.QApplication.queryKeyboardModifiers() & QtCore.Qt.ShiftModifier != 0
-            currentRow if currentRow == 0 else currentRow - 1)
+        folder = self.getCurrentFolder()
+        trash = not (folder == "trash" or shiftPressed)
+
+        for i in tableWidget.selectedIndexes():
+            if i.column() != 3:
+                continue
+
+            currentRow = i.row()
+            ackData = str(i.data(QtCore.Qt.UserRole).toPyObject())
+
+            queryReturn = sqlQuery("""SELECT "status" FROM "sent" WHERE "ackdata" == ?;""", ackData)
+
+            if len(queryReturn) == 0:
+                continue
+
+            status = queryReturn[0][0]
+
+            if status in ["broadcastqueued", "doingbroadcastpow", "broadcastsent", "broadcastcanceled"]:
+                queues.workerQueue.put(("cancelBroadcast", ackData, True, trash))
+            else:
+                queues.workerQueue.put(("cancelMessage", ackData, True, trash))
+
+    def on_action_CancelSending(self):
+        tableWidget = self.getCurrentMessagelist()
+
+        if not tableWidget:
+            return
+
+        for i in tableWidget.selectedIndexes():
+            if i.column() != 3:
+                continue
+
+            currentRow = i.row()
+            ackData = str(i.data(QtCore.Qt.UserRole).toPyObject())
+
+            queryReturn = sqlQuery("""SELECT "status" FROM "sent" WHERE "ackdata" == ?;""", ackData)
+
+            if len(queryReturn) == 0:
+                continue
+
+            status = queryReturn[0][0]
+
+            if status in ["broadcastqueued", "doingbroadcastpow"]:
+                queues.workerQueue.put(("cancelBroadcast", ackData, False, None))
+            elif status not in ["ackreceived", "msgsentnoackexpected", "badkey", "msgcanceled"]:
+                queues.workerQueue.put(("cancelMessage", ackData, False, None))
 
     def on_action_ForceSend(self):
-        currentRow = self.ui.tableWidgetInbox.currentRow()
+        tableWidget = self.getCurrentMessagelist()
-        addressAtCurrentRow = self.ui.tableWidgetInbox.item(
+
-            currentRow, 0).data(QtCore.Qt.UserRole)
+        if not tableWidget:
-        toRipe = decodeAddress(addressAtCurrentRow)[3]
+            return
-        sqlExecute(
+
-            '''UPDATE sent SET status='forcepow' WHERE toripe=? AND status='toodifficult' and folder='sent' ''',
+        resendMessages = False
-            toRipe)
+
-        queryreturn = sqlQuery('''select ackdata FROM sent WHERE status='forcepow' ''')
+        for i in tableWidget.selectedIndexes():
-        for row in queryreturn:
+            if i.column() != 3:
-            ackdata, = row
+                continue
-            queues.UISignalQueue.put(('updateSentItemStatusByAckdata', (
+
-                ackdata, 'Overriding maximum-difficulty setting. Work queued.')))
+            ackData = str(i.data(QtCore.Qt.UserRole).toPyObject())
-        queues.workerQueue.put(('sendmessage', ''))
+
+            queryReturn = sqlQuery("""SELECT "status" FROM "sent" WHERE "ackdata" == ?;""", ackData)
+
+            if len(queryReturn) == 0:
+                continue
+
+            if queryReturn[0][0] == "toodifficult":
+                sqlExecute("""
+                    UPDATE "sent" SET "status" = 'forcepow'
+                    WHERE "ackdata" == ? AND "status" == 'toodifficult' AND "folder" = 'sent';
+                """, ackData)
+
+                queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+                    "forcepow",
+                    ackData,
+                    "Overriding maximum-difficulty setting. Work queued." # TODO: add translation?
+                )))
+
+                resendMessages = True
+
+        if resendMessages:
+            queues.workerQueue.put(("sendmessage", ))
 
     def on_action_SentClipboard(self):
         currentRow = self.ui.tableWidgetInbox.currentRow()
@@ -3988,23 +4094,51 @@ class MyForm(settingsmixin.SMainWindow):
                 self.popMenuInbox.exec_(tableWidget.mapToGlobal(point))
 
     def on_context_menuSent(self, point):
+        tableWidget = self.getCurrentMessagelist()
+
+        if not tableWidget:
+            return
+
+        showMenu = False
+        cancelSending = False
+        forceSend = False
+
+        for i in tableWidget.selectedIndexes():
+            if i.column() != 3:
+                continue
+
+            ackData = str(i.data(QtCore.Qt.UserRole).toPyObject())
+
+            queryReturn = sqlQuery("""SELECT "status" FROM "sent" WHERE "ackdata" == ?;""", ackData)
+
+            if len(queryReturn) == 0:
+                continue
+
+            status = queryReturn[0][0]
+
+            if status not in [
+                "ackreceived", "msgsentnoackexpected", "badkey", "msgcanceled",
+                "broadcastsent", "broadcastcanceled"
+            ]:
+                cancelSending = True
+
+            if status == "toodifficult":
+                forceSend = True
+
+            showMenu = True
+
+        if showMenu:
             self.popMenuSent = QtGui.QMenu(self)
             self.popMenuSent.addAction(self.actionSentClipboard)
             self.popMenuSent.addAction(self.actionTrashSentMessage)
 
-        # Check to see if this item is toodifficult and display an additional
+            if cancelSending:
-        # menu option (Force Send) if it is.
+                self.popMenuSent.addAction(self.actionCancelSending)
-        currentRow = self.ui.tableWidgetInbox.currentRow()
+
-        if currentRow >= 0:
+            if forceSend:
-            ackData = str(self.ui.tableWidgetInbox.item(
-                currentRow, 3).data(QtCore.Qt.UserRole).toPyObject())
-            queryreturn = sqlQuery('''SELECT status FROM sent where ackdata=?''', ackData)
-            for row in queryreturn:
-                status, = row
-            if status == 'toodifficult':
                 self.popMenuSent.addAction(self.actionForceSend)
 
-        self.popMenuSent.exec_(self.ui.tableWidgetInbox.mapToGlobal(point))
+            self.popMenuSent.exec_(tableWidget.mapToGlobal(point))
 
     def inboxSearchLineEditUpdated(self, text):
         # dynamic search for too short text is slow

src/bitmessageqt/uisignaler.py

@@ -26,14 +26,13 @@ class UISignaler(QThread):
                     "writeNewAddressToTable(PyQt_PyObject,PyQt_PyObject,PyQt_PyObject)"), label, address, str(streamNumber))
             elif command == 'updateStatusBar':
                 self.emit(SIGNAL("updateStatusBar(PyQt_PyObject)"), data)
-            elif command == 'updateSentItemStatusByToAddress':
+            elif command == "updateSentItemStatusByToAddress":
-                toAddress, message = data
                 self.emit(SIGNAL(
-                    "updateSentItemStatusByToAddress(PyQt_PyObject,PyQt_PyObject)"), toAddress, message)
+                    "updateSentItemStatusByToAddress(PyQt_PyObject,PyQt_PyObject,PyQt_PyObject)"), *data)
-            elif command == 'updateSentItemStatusByAckdata':
+            elif command == "updateSentItemStatusByAckdata":
-                ackData, message = data
+                status, address, message = data
                 self.emit(SIGNAL(
-                    "updateSentItemStatusByAckdata(PyQt_PyObject,PyQt_PyObject)"), ackData, message)
+                    "updateSentItemStatusByAckdata(PyQt_PyObject,PyQt_PyObject,PyQt_PyObject)"), *data)
             elif command == 'displayNewInboxMessage':
                 inventoryHash, toAddress, fromAddress, subject, body = data
                 self.emit(SIGNAL(
@@ -44,6 +43,8 @@ class UISignaler(QThread):
                 self.emit(SIGNAL(
                     "displayNewSentMessage(PyQt_PyObject,PyQt_PyObject,PyQt_PyObject,PyQt_PyObject,PyQt_PyObject,PyQt_PyObject)"),
                     toAddress, fromLabel, fromAddress, subject, message, ackdata)
+            elif command == "deleteSentItemByAckData":
+                self.emit(SIGNAL("deleteSentItemByAckData(PyQt_PyObject)"), data)
             elif command == 'updateNetworkStatusTab':
                 outbound, add, destination = data
                 self.emit(SIGNAL("updateNetworkStatusTab(PyQt_PyObject,PyQt_PyObject,PyQt_PyObject)"), outbound, add, destination)

src/class_objectProcessor.py

@@ -131,6 +131,7 @@ class objectProcessor(threading.Thread):
         """, int(time.time()), ackData)
 
         queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+            "ackreceived",
             ackData,
             tr._translate(
                 "MainWindow",
@@ -1041,6 +1042,7 @@ class objectProcessor(threading.Thread):
 
             for i, in queued:
                 queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+                    "msgqueued",
                     i,
                     tr._translate(
                         "MainWindow",

src/class_singleCleaner.py

@@ -60,6 +60,7 @@ def resendStaleMessages():
             """, ackData)
 
         queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+            "msgqueued",
             ackData,
             tr._translate(
                 "MainWindow",

src/class_smtpDeliver.py

@@ -42,10 +42,10 @@ class smtpDeliver(threading.Thread, StoppableThread):
             elif command == 'updateStatusBar':
                 pass
             elif command == 'updateSentItemStatusByToAddress':
-                toAddress, message = data
+                status, toAddress, message = data
                 pass
             elif command == 'updateSentItemStatusByAckdata':
-                ackData, message = data
+                status, ackData, message = data
                 pass
             elif command == 'displayNewInboxMessage':
                 inventoryHash, toAddress, fromAddress, subject, body = data

src/singleworker.py

@@ -38,10 +38,14 @@ import workprover
 #                                                          | +-> toodifficult --> forcepow -+
 #                                                          |                                |
 #                                                          +--------------------------------+
+#
+# Can also be "msgcanceled"
 
 # Broadcast status flow:
 #
 # broadcastqueued --> doingbroadcastpow --> broadcastsent
+#
+# Can also be "broadcastcanceled"
 
 # TODO: queued pubkey messages are not saved to the database, they disappear when the client is closed
 
@@ -191,6 +195,7 @@ def getDestinationAddressProperties(address):
 
         for i, in queued:
             queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+                "msgqueued",
                 i,
                 tr._translate(
                     "MainWindow",
@@ -282,8 +287,12 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
 
             if command == "sendmessage":
                 self.sendMessages()
+            elif command == "cancelMessage":
+                self.cancelMessage(*arguments)
             elif command == "sendbroadcast":
                 self.sendBroadcasts()
+            elif command == "cancelBroadcast":
+                self.cancelBroadcast(*arguments)
             elif command == "sendMyPubkey":
                 self.sendMyPubkey(*arguments)
             elif command == "requestPubkey":
@@ -316,6 +325,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
     def workDone(self, ID, nonce, expiryTime):
         debug.logger.info("Found proof of work %s", ID)
 
+        if ID in self.startedWorks:
             self.startedWorks[ID](nonce, expiryTime)
 
             del self.startedWorks[ID]
@@ -426,6 +436,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
             addressProperties = getMyAddressProperties(address)
         except:
             queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+                "broadcastqueued",
                 ackData,
                 tr._translate(
                     "MainWindow",
@@ -527,6 +538,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
             """, inventoryHash, int(time.time()), ackData)
 
             queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+                "broadcastsent",
                 ackData,
                 tr._translate("MainWindow", "Broadcast sent on %1").arg(l10n.formatTimestamp())
             )))
@@ -543,6 +555,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
         helper_sql.sqlExecute("""UPDATE "sent" SET "status" = 'doingbroadcastpow' WHERE "ackdata" == ?;""", ackData)
 
         queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+            "doingbroadcastpow",
             ackData,
             tr._translate(
                 "MainWindow",
@@ -569,6 +582,36 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
 
             self.processBroadcast(*i)
 
+    def cancelBroadcast(self, ackData, delete, trash):
+        ID = "broadcast", ackData
+
+        if ID in self.startedWorks:
+            del self.startedWorks[ID]
+
+            self.workProver.commandsQueue.put(("cancelTask", ID))
+
+        helper_sql.sqlExecute("""
+            UPDATE "sent" SET "status" = 'broadcastcanceled'
+            WHERE "ackdata" == ? AND "status" != 'broadcastsent';
+        """, ackData)
+
+        if delete:
+            if trash:
+                helper_sql.sqlExecute("""UPDATE "sent" SET "folder" = 'trash' WHERE "ackdata" == ?;""", ackData)
+            else:
+                helper_sql.sqlExecute("""DELETE FROM "sent" WHERE "ackdata" == ?""", ackData)
+
+            queues.UISignalQueue.put(("deleteSentItemByAckData", ackData))
+        else:
+            queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+                "broadcastcanceled",
+                ackData,
+                tr._translate(
+                    "MainWindow",
+                    "Broadcast canceled."
+                )
+            )))
+
     def generateAckMessage(self, ackData, stream, TTL, callback):
         ID = "ack", ackData
 
@@ -616,6 +659,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
             queues.workerQueue.put(("requestPubkey", destination))
 
             queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+                "awaitingpubkey",
                 ackData,
                 tr._translate(
                     "MainWindow",
@@ -634,6 +678,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
             sourceProperties = getMyAddressProperties(source, defaultDifficulty)
         except:
             queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+                "msgqueued",
                 ackData,
                 tr._translate(
                     "MainWindow",
@@ -669,6 +714,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
                 helper_sql.sqlExecute("""UPDATE "sent" SET "status" = 'toodifficult' WHERE "ackdata" == ?;""", ackData)
 
                 queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+                    "toodifficult",
                     ackData,
                     tr._translate(
                         "MainWindow",
@@ -733,6 +779,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
                 helper_sql.sqlExecute("""UPDATE "sent" SET "status" = 'badkey' WHERE "ackdata" == ?;""", ackData)
 
                 queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+                    "badkey",
                     ackData,
                     tr._translate(
                         "MainWindow",
@@ -784,6 +831,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
 
                 if ackMessage is None:
                     queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+                        "msgsentnoackexpected",
                         ackData,
                         tr._translate(
                             "MainWindow",
@@ -792,6 +840,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
                     )))
                 else:
                     queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+                        "msgsent",
                         ackData,
                         tr._translate(
                             "MainWindow",
@@ -811,6 +860,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
 
         if relativeByteDifficulty != 1 or relativeLengthExtension != 1:
             queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+                "doingmsgpow",
                 ackData,
                 tr._translate(
                     "MainWindow",
@@ -819,6 +869,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
             )))
         else:
             queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+                "doingmsgpow",
                 ackData,
                 tr._translate(
                     "MainWindow",
@@ -849,6 +900,75 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
 
             self.processMessage(*i)
 
+    def cancelMessage(self, ackData, delete, trash):
+        #multpubky
+        #neededkeys
+
+        ID = "ack", ackData
+
+        if ID in self.startedWorks:
+            del self.startedWorks[ID]
+
+            self.workProver.commandsQueue.put(("cancelTask", ID))
+
+        ID = "message", ackData
+
+        if ID in self.startedWorks:
+            del self.startedWorks[ID]
+
+            self.workProver.commandsQueue.put(("cancelTask", ID))
+
+        state.watchedAckData -= {ackData}
+
+        queryReturn = helper_sql.sqlQuery("""SELECT "toaddress" FROM "sent" WHERE "ackdata" == ?;""", ackData)
+
+        if len(queryReturn) != 0:
+            destination = queryReturn[0][0]
+
+            count = helper_sql.sqlQuery("""
+                SELECT COUNT(*) FROM "sent"
+                WHERE "status" IN ('doingpubkeypow', 'awaitingpubkey') AND "toaddress" == ? AND "ackdata" != ?;
+            """, destination, ackData)[0][0]
+
+            if count == 0:
+                ID = "getpubkey", destination
+
+                if ID in self.startedWorks:
+                    del self.startedWorks[ID]
+
+                    self.workProver.commandsQueue.put(("cancelTask", ID))
+
+                status, version, stream, ripe = addresses.decodeAddress(destination)
+
+                if version == 4:
+                    secretEncryptionKey, tag = protocol.calculateAddressTag(version, stream, ripe)
+
+                    state.neededPubkeys.pop(tag, None)
+                else:
+                    state.neededPubkeys.pop(destination, None)
+
+        helper_sql.sqlExecute("""
+            UPDATE "sent" SET "status" = 'msgcanceled'
+            WHERE "ackdata" == ? AND "status" NOT IN ('ackreceived', 'msgsentnoackexpected', 'badkey');
+        """, ackData)
+
+        if delete:
+            if trash:
+                helper_sql.sqlExecute("""UPDATE "sent" SET "folder" = 'trash' WHERE "ackdata" == ?;""", ackData)
+            else:
+                helper_sql.sqlExecute("""DELETE FROM "sent" WHERE "ackdata" == ?""", ackData)
+
+            queues.UISignalQueue.put(("deleteSentItemByAckData", ackData))
+        else:
+            queues.UISignalQueue.put(("updateSentItemStatusByAckdata", (
+                "msgcanceled",
+                ackData,
+                tr._translate(
+                    "MainWindow",
+                    "Message canceled."
+                )
+            )))
+
     def requestPubkey(self, address):
         ID = "getpubkey", address
 
@@ -879,6 +999,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
             """, currentExpiryTime, address)
 
             queues.UISignalQueue.put(("updateSentItemStatusByToAddress", (
+                "awaitingpubkey",
                 address,
                 tr._translate(
                     "MainWindow",
@@ -912,6 +1033,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
             """, sleepTill, int(time.time()), address)
 
             queues.UISignalQueue.put(("updateSentItemStatusByToAddress", (
+                "awaitingpubkey",
                 address,
                 tr._translate(
                     "MainWindow",
@@ -925,6 +1047,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
         """, address)
 
         queues.UISignalQueue.put(("updateSentItemStatusByToAddress", (
+            "doingpubkeypow",
             address,
             tr._translate(
                 "MainWindow",