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# Orca # # Copyright 2010-2011 The Orca Team # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2.1 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the # Free Software Foundation, Inc., Franklin Street, Fifth Floor, # Boston MA 02110-1301 USA. """Implements generic chat support.""" __id__ = "$Id$" __version__ = "$Revision$" __date__ = "$Date$" __copyright__ = "Copyright (c) 2010-2011 The Orca Team" __license__ = "LGPL" from . import cmdnames from . import debug from . import focus_manager from . import guilabels from . import input_event from . import keybindings from . import messages from . import script_manager from . import settings from . import settings_manager from .ax_object import AXObject from .ax_utilities import AXUtilities ############################################################################# # # # Ring List. A fixed size circular list by Flavio Catalani # # http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/435902 # # # # Included here to keep track of conversation histories. # # # ############################################################################# class RingList: def __init__(self, length): self.__data__ = [] self.__full__ = 0 self.__max__ = length self.__cur__ = 0 def append(self, x): if self.__full__ == 1: for i in range (0, self.__cur__ - 1): self.__data__[i] = self.__data__[i + 1] self.__data__[self.__cur__ - 1] = x else: self.__data__.append(x) self.__cur__ += 1 if self.__cur__ == self.__max__: self.__full__ = 1 def get(self): return self.__data__ def remove(self): if (self.__cur__ > 0): del self.__data__[self.__cur__ - 1] self.__cur__ -= 1 def size(self): return self.__cur__ def maxsize(self): return self.__max__ def __str__(self): return ''.join(self.__data__) ############################################################################# # # # Conversation # # # ############################################################################# class Conversation: # The number of messages to keep in the history # MESSAGE_LIST_LENGTH = 9 def __init__(self, name, accHistory, inputArea=None): """Creates a new instance of the Conversation class. Arguments: - name: the chatroom/conversation name - accHistory: the accessible which holds the conversation history - inputArea: the editable text object for this conversation. """ self.name = name self.accHistory = accHistory self.inputArea = inputArea # A cyclic list to hold the chat room history for this conversation # self._messageHistory = RingList(Conversation.MESSAGE_LIST_LENGTH) # Initially populate the cyclic lists with empty strings. # i = 0 while i < self._messageHistory.maxsize(): self.addMessage("") i += 1 # Keep track of the last typing status because some platforms (e.g. # MSN) seem to issue the status constantly and even though it has # not changed. # self._typingStatus = "" def addMessage(self, message): """Adds the current message to the message history. Arguments: - message: A string containing the message to add """ self._messageHistory.append(message) def getNthMessage(self, messageNumber): """Returns the specified message from the message history. Arguments: - messageNumber: the index of the message to get. """ messages = self._messageHistory.get() return messages[messageNumber] def getTypingStatus(self): """Returns the typing status of the buddy in this conversation.""" return self._typingStatus def setTypingStatus(self, status): """Sets the typing status of the buddy in this conversation. Arguments: - status: a string describing the current status. """ self._typingStatus = status ############################################################################# # # # ConversationList # # # ############################################################################# class ConversationList: def __init__(self, messageListLength): """Creates a new instance of the ConversationList class. Arguments: - messageListLength: the size of the message history to keep. """ self.conversations = [] # A cyclic list to hold the most recent (messageListLength) previous # messages for all conversations in the ConversationList. # self._messageHistory = RingList(messageListLength) # A corresponding cyclic list to hold the name of the conversation # associated with each message in the messageHistory. # self._roomHistory = RingList(messageListLength) # Initially populate the cyclic lists with empty strings. # i = 0 while i < self._messageHistory.maxsize(): self.addMessage("", None) i += 1 def addMessage(self, message, conversation): """Adds the current message to the message history. Arguments: - message: A string containing the message to add - conversation: The instance of the Conversation class with which the message is associated """ if not conversation: name = "" else: if not self.hasConversation(conversation): self.addConversation(conversation) name = conversation.name self._messageHistory.append(message) self._roomHistory.append(name) def getNthMessageAndName(self, messageNumber): """Returns a list containing the specified message from the message history and the name of the chatroom/conversation associated with that message. Arguments: - messageNumber: the index of the message to get. """ messages = self._messageHistory.get() rooms = self._roomHistory.get() return messages[messageNumber], rooms[messageNumber] def hasConversation(self, conversation): """Returns True if we know about this conversation. Arguments: - conversation: the conversation of interest """ return conversation in self.conversations def getNConversations(self): """Returns the number of conversations we currently know about.""" return len(self.conversations) def addConversation(self, conversation): """Adds conversation to the list of conversations. Arguments: - conversation: the conversation to add """ self.conversations.append(conversation) def removeConversation(self, conversation): """Removes conversation from the list of conversations. Arguments: - conversation: the conversation to remove Returns True if conversation was successfully removed. """ # TODO - JD: In the Pidgin script, I do not believe we handle the # case where a conversation window is closed. I *think* it remains # in the overall chat history. What do we want to do in that case? # I would assume that we'd want to remove it.... So here's a method # to do so. Nothing in the Chat class uses it yet. # try: self.conversations.remove(conversation) except Exception: return False else: return True ############################################################################# # # # Chat # # # ############################################################################# class Chat: """This class implements the chat functionality which is available to scripts. """ def __init__(self, script, buddyListAncestries): """Creates an instance of the Chat class. Arguments: - script: the script with which this instance is associated. - buddyListAncestries: a list of lists of roles beginning with the object serving as the actual buddy list (e.g. ROLE_TREE_TABLE) and ending with the top level object (e.g. ROLE_FRAME). """ self._script = script self._buddyListAncestries = buddyListAncestries # Keybindings to provide conversation message history. The message # review order will be based on the index within the list. Thus F1 # is associated with the most recent message, F2 the message before # that, and so on. A script could override this. Setting messageKeys # to ["a", "b", "c" ... ] will cause "a" to be associated with the # most recent message, "b" to be associated with the message before # that, etc. Scripts can also override the messageKeyModifier. # self.messageKeys = \ ["F1", "F2", "F3", "F4", "F5", "F6", "F7", "F8", "F9"] self.messageKeyModifier = keybindings.ORCA_MODIFIER_MASK self.inputEventHandlers = {} self.setupInputEventHandlers() self.keyBindings = self.getKeyBindings() # The length of the message history will be based on how many keys # are bound to the task of providing it. # self.messageListLength = len(self.messageKeys) self._conversationList = ConversationList(self.messageListLength) self.focusedChannelRadioButton = None self.allChannelsRadioButton = None self.allMessagesRadioButton = None self.buddyTypingCheckButton = None self.chatRoomHistoriesCheckButton = None self.speakNameCheckButton = None def setupInputEventHandlers(self): """Defines InputEventHandler fields for chat functions which will be used by the script associated with this chat instance.""" self.inputEventHandlers["togglePrefixHandler"] = \ input_event.InputEventHandler( self.togglePrefix, cmdnames.CHAT_TOGGLE_ROOM_NAME_PREFIX) self.inputEventHandlers["toggleBuddyTypingHandler"] = \ input_event.InputEventHandler( self.toggleBuddyTyping, cmdnames.CHAT_TOGGLE_BUDDY_TYPING) self.inputEventHandlers["toggleMessageHistoriesHandler"] = \ input_event.InputEventHandler( self.toggleMessageHistories, cmdnames.CHAT_TOGGLE_MESSAGE_HISTORIES) self.inputEventHandlers["reviewMessage"] = \ input_event.InputEventHandler( self.readPreviousMessage, cmdnames.CHAT_PREVIOUS_MESSAGE) return def getKeyBindings(self): """Defines the chat-related key bindings which will be used by the script associated with this chat instance. Returns: an instance of keybindings.KeyBindings. """ keyBindings = keybindings.KeyBindings() keyBindings.add( keybindings.KeyBinding( "", keybindings.defaultModifierMask, keybindings.NO_MODIFIER_MASK, self.inputEventHandlers["togglePrefixHandler"])) keyBindings.add( keybindings.KeyBinding( "", keybindings.defaultModifierMask, keybindings.NO_MODIFIER_MASK, self.inputEventHandlers["toggleBuddyTypingHandler"])) keyBindings.add( keybindings.KeyBinding( "", keybindings.defaultModifierMask, keybindings.NO_MODIFIER_MASK, self.inputEventHandlers["toggleMessageHistoriesHandler"])) for messageKey in self.messageKeys: keyBindings.add( keybindings.KeyBinding( messageKey, self.messageKeyModifier, keybindings.ORCA_MODIFIER_MASK, self.inputEventHandlers["reviewMessage"])) return keyBindings def getAppPreferencesGUI(self): """Return a GtkGrid containing the application unique configuration GUI items for the current application. """ from gi.repository import Gtk grid = Gtk.Grid() grid.set_border_width(12) label = guilabels.CHAT_SPEAK_ROOM_NAME value = settings_manager.getManager().getSetting('chatSpeakRoomName') self.speakNameCheckButton = Gtk.CheckButton.new_with_mnemonic(label) self.speakNameCheckButton.set_active(value) grid.attach(self.speakNameCheckButton, 0, 0, 1, 1) label = guilabels.CHAT_ANNOUNCE_BUDDY_TYPING value = settings_manager.getManager().getSetting('chatAnnounceBuddyTyping') self.buddyTypingCheckButton = Gtk.CheckButton.new_with_mnemonic(label) self.buddyTypingCheckButton.set_active(value) grid.attach(self.buddyTypingCheckButton, 0, 1, 1, 1) label = guilabels.CHAT_SEPARATE_MESSAGE_HISTORIES value = settings_manager.getManager().getSetting('chatRoomHistories') self.chatRoomHistoriesCheckButton = \ Gtk.CheckButton.new_with_mnemonic(label) self.chatRoomHistoriesCheckButton.set_active(value) grid.attach(self.chatRoomHistoriesCheckButton, 0, 2, 1, 1) messagesFrame = Gtk.Frame() grid.attach(messagesFrame, 0, 3, 1, 1) label = Gtk.Label(f"<b>{guilabels.CHAT_SPEAK_MESSAGES_FROM}</b>") label.set_use_markup(True) messagesFrame.set_label_widget(label) messagesAlignment = Gtk.Alignment.new(0.5, 0.5, 1, 1) messagesAlignment.set_padding(0, 0, 12, 0) messagesFrame.add(messagesAlignment) messagesGrid = Gtk.Grid() messagesAlignment.add(messagesGrid) value = settings_manager.getManager().getSetting('chatMessageVerbosity') label = guilabels.CHAT_SPEAK_MESSAGES_ALL rb1 = Gtk.RadioButton.new_with_mnemonic(None, label) rb1.set_active(value == settings.CHAT_SPEAK_ALL) self.allMessagesRadioButton = rb1 messagesGrid.attach(self.allMessagesRadioButton, 0, 0, 1, 1) label = guilabels.CHAT_SPEAK_MESSAGES_ACTIVE rb2 = Gtk.RadioButton.new_with_mnemonic(None, label) rb2.join_group(rb1) rb2.set_active(value == settings.CHAT_SPEAK_FOCUSED_CHANNEL) self.focusedChannelRadioButton = rb2 messagesGrid.attach(self.focusedChannelRadioButton, 0, 1, 1, 1) label = guilabels.CHAT_SPEAK_MESSAGES_ALL_IF_FOCUSED % \ AXObject.get_name(self._script.app) rb3 = Gtk.RadioButton.new_with_mnemonic(None, label) rb3.join_group(rb1) rb3.set_active(value == settings.CHAT_SPEAK_ALL_IF_FOCUSED) self.allChannelsRadioButton = rb3 messagesGrid.attach(self.allChannelsRadioButton, 0, 2, 1, 1) grid.show_all() return grid def getPreferencesFromGUI(self): """Returns a dictionary with the app-specific preferences.""" if self.allChannelsRadioButton.get_active(): verbosity = settings.CHAT_SPEAK_ALL_IF_FOCUSED elif self.focusedChannelRadioButton.get_active(): verbosity = settings.CHAT_SPEAK_FOCUSED_CHANNEL else: verbosity = settings.CHAT_SPEAK_ALL return { 'chatMessageVerbosity': verbosity, 'chatSpeakRoomName': self.speakNameCheckButton.get_active(), 'chatAnnounceBuddyTyping': self.buddyTypingCheckButton.get_active(), 'chatRoomHistories': self.chatRoomHistoriesCheckButton.get_active(), } ######################################################################## # # # InputEvent handlers and supporting utilities # # # ######################################################################## def togglePrefix(self, script, inputEvent): """ Toggle whether we prefix chat room messages with the name of the chat room. Arguments: - script: the script associated with this event - inputEvent: if not None, the input event that caused this action. """ line = messages.CHAT_ROOM_NAME_PREFIX_ON speakRoomName = settings_manager.getManager().getSetting('chatSpeakRoomName') settings_manager.getManager().setSetting('chatSpeakRoomName', not speakRoomName) if speakRoomName: line = messages.CHAT_ROOM_NAME_PREFIX_OFF self._script.presentMessage(line) return True def toggleBuddyTyping(self, script, inputEvent): """ Toggle whether we announce when our buddies are typing a message. Arguments: - script: the script associated with this event - inputEvent: if not None, the input event that caused this action. """ line = messages.CHAT_BUDDY_TYPING_ON announceTyping = settings_manager.getManager().getSetting('chatAnnounceBuddyTyping') settings_manager.getManager().setSetting( 'chatAnnounceBuddyTyping', not announceTyping) if announceTyping: line = messages.CHAT_BUDDY_TYPING_OFF self._script.presentMessage(line) return True def toggleMessageHistories(self, script, inputEvent): """ Toggle whether we provide chat room specific message histories. Arguments: - script: the script associated with this event - inputEvent: if not None, the input event that caused this action. """ line = messages.CHAT_SEPARATE_HISTORIES_ON roomHistories = settings_manager.getManager().getSetting('chatRoomHistories') settings_manager.getManager().setSetting('chatRoomHistories', not roomHistories) if roomHistories: line = messages.CHAT_SEPARATE_HISTORIES_OFF self._script.presentMessage(line) return True def readPreviousMessage(self, script, inputEvent=None, index=0): """ Speak/braille a previous chat room message. Arguments: - script: the script associated with this event - inputEvent: if not None, the input event that caused this action. - index: The index of the message to read -- by default, the most recent message. If we get an inputEvent, however, the value of index is ignored and the index of the event_string with respect to self.messageKeys is used instead. """ try: index = self.messageKeys.index(inputEvent.event_string) except Exception: pass messageNumber = self.messageListLength - (index + 1) message, chatRoomName = None, None if settings_manager.getManager().getSetting('chatRoomHistories'): conversation = self.getConversation(focus_manager.getManager().get_locus_of_focus()) if conversation: message = conversation.getNthMessage(messageNumber) chatRoomName = conversation.name else: message, chatRoomName = \ self._conversationList.getNthMessageAndName(messageNumber) if message and chatRoomName: self.utterMessage(chatRoomName, message, True) def utterMessage(self, chatRoomName, message, focused=True): """ Speak/braille a chat room message. Arguments: - chatRoomName: name of the chat room this message came from - message: the chat room message - focused: whether or not the current chatroom has focus. Defaults to True so that we can use this method to present chat history as well as incoming messages. """ # Only speak/braille the new message if it matches how the user # wants chat messages spoken. # verbosity = settings_manager.getManager().getAppSetting( self._script.app, 'chatMessageVerbosity') script = script_manager.getManager().getActiveScript() if script.name != self._script.name \ and verbosity == settings.CHAT_SPEAK_ALL_IF_FOCUSED: return elif not focused and verbosity == settings.CHAT_SPEAK_FOCUSED_CHANNEL: return text = "" if chatRoomName and \ settings_manager.getManager().getAppSetting(self._script.app, 'chatSpeakRoomName'): text = messages.CHAT_MESSAGE_FROM_ROOM % chatRoomName if not settings.presentChatRoomLast: text = self._script.utilities.appendString(text, message) else: text = self._script.utilities.appendString(message, text) if len(text.strip()): voice = self._script.speechGenerator.voice(string=text) self._script.speakMessage(text, voice=voice) self._script.displayBrailleMessage(text) def getMessageFromEvent(self, event): """Get the actual displayed message. This will almost always be the unaltered any_data from an event of type object:text-changed:insert. Arguments: - event: the Event from which to take the text. Returns the string which should be presented as the newly-inserted text. (Things like chatroom name prefacing get handled elsewhere.) """ return event.any_data def presentInsertedText(self, event): """Gives the Chat class an opportunity to present the text from the text inserted Event. Arguments: - event: the text inserted Event Returns True if we handled this event here; otherwise False, which tells the associated script that is not a chat event that requires custom handling. """ if not event \ or not event.type.startswith("object:text-changed:insert") \ or not event.any_data: return False if self.isGenericTextObject(event.source): # The script should handle non-chat specific text areas (e.g., # adding a new account). # return False elif self.isInBuddyList(event.source): # These are status changes. What the Pidgin script currently # does for these is ignore them. It might be nice to add # some options to allow the user to customize what status # changes are presented. But for now, we'll ignore them # across the board. # return True elif self.isTypingStatusChangedEvent(event): self.presentTypingStatusChange(event, event.any_data) return True elif self.isChatRoomMsg(event.source): if self.isNewConversation(event.source): name = self.getChatRoomName(event.source) conversation = Conversation(name, event.source) else: conversation = self.getConversation(event.source) name = conversation.name message = self.getMessageFromEvent(event).strip("\n") if message: self.addMessageToHistory(message, conversation) # The user may or may not want us to present this message. Also, # don't speak the name if it's the focused chat. # focused = self.isFocusedChat(event.source) if focused: name = "" if message: self.utterMessage(name, message, focused) return True elif self.isAutoCompletedTextEvent(event): text = event.any_data voice = self._script.speechGenerator.voice(string=text) self._script.speakMessage(text, voice=voice) return True return False def presentTypingStatusChange(self, event, status): """Presents a change in typing status for the current conversation if the status has indeed changed and if the user wants to hear it. Arguments: - event: the accessible Event - status: a string containing the status change Returns True if we spoke the change; False otherwise """ if settings_manager.getManager().getSetting('chatAnnounceBuddyTyping'): conversation = self.getConversation(event.source) if conversation and (status != conversation.getTypingStatus()): voice = self._script.speechGenerator.voice(string=status) self._script.speakMessage(status, voice=voice) conversation.setTypingStatus(status) return True return False def addMessageToHistory(self, message, conversation): """Adds message to both the individual conversation's history as well as to the complete history stored in our conversation list. Arguments: - message: a string containing the message to be added - conversation: the instance of the Conversation class to which this message belongs """ conversation.addMessage(message) self._conversationList.addMessage(message, conversation) ######################################################################## # # # Convenience methods for identifying, locating different accessibles # # # ######################################################################## def isGenericTextObject(self, obj): """Returns True if the given accessible seems to be something unrelated to the custom handling we're attempting to do here. Arguments: - obj: the accessible object to examine. """ return AXUtilities.is_editable(obj) and AXUtilities.is_single_line(obj) def isBuddyList(self, obj): """Returns True if obj is the list of buddies in the buddy list window. Note that this method relies upon a hierarchical check, using a list of hierarchies provided by the script. Scripts which have more reliable means of identifying the buddy list can override this method. Arguments: - obj: the accessible being examined """ if obj is None: return False for roleList in self._buddyListAncestries: if self._script.utilities.hasMatchingHierarchy(obj, roleList): return True return False def isInBuddyList(self, obj, includeList=True): """Returns True if obj is, or is inside of, the buddy list. Arguments: - obj: the accessible being examined - includeList: whether or not the list itself should be considered "in" the buddy list. """ if includeList and self.isBuddyList(obj): return True for roleList in self._buddyListAncestries: role = roleList[0] candidate = AXObject.find_ancestor(obj, lambda x: AXObject.get_role(x) == role) if self.isBuddyList(candidate): return True return False def isNewConversation(self, obj): """Returns True if the given accessible is the chat history associated with a new conversation. Arguments: - obj: the accessible object to examine. """ conversation = self.getConversation(obj) return not self._conversationList.hasConversation(conversation) def getConversation(self, obj): """Attempts to locate the conversation associated with obj. Arguments: - obj: the accessible of interest Returns the conversation if found; None otherwise """ if not obj: return None name = "" # TODO - JD: If we have multiple chats going on and those # chats have the same name, and we're in the input area, # this approach will fail. What I should probably do instead # is, upon creation of a new conversation, figure out where # the input area is and save it. For now, I just want to get # things working. And people should not be in multiple chat # rooms with identical names anyway. :-) # if (AXUtilities.is_text(obj) or AXObject.is_entry(obj)) \ and AXUtilities.is_editable(obj): name = self.getChatRoomName(obj) for conversation in self._conversationList.conversations: if name: if name == conversation.name: return conversation # Doing an equality check seems to be preferable here to # utilities.isSameObject as a result of false positives. # elif obj == conversation.accHistory: return conversation return None def isChatRoomMsg(self, obj): """Returns True if the given accessible is the text object for associated with a chat room conversation. Arguments: - obj: the accessible object to examine. """ if AXUtilities.is_text(obj) and AXUtilities.is_scroll_pane(AXObject.get_parent(obj)): return not AXUtilities.is_editable(obj) and AXUtilities.is_multi_line(obj) return False def isFocusedChat(self, obj): """Returns True if we plan to treat this chat as focused for the purpose of deciding whether or not a message should be presented to the user. Arguments: - obj: the accessible object to examine. """ if AXUtilities.is_showing(obj): active = self._script.utilities.topLevelObjectIsActiveAndCurrent(obj) tokens = ["INFO:", obj, "'s window is focused chat:", active] debug.printTokens(debug.LEVEL_INFO, tokens, True) return active tokens = ["INFO:", obj, "is not focused chat (not showing)"] debug.printTokens(debug.LEVEL_INFO, tokens, True) return False def getChatRoomName(self, obj): """Attempts to find the name of the current chat room. Arguments: - obj: The accessible of interest Returns a string containing what we think is the chat room name. """ # Most of the time, it seems that the name can be found in the # page tab which is the ancestor of the chat history. Failing # that, we'll look at the frame name. Failing that, scripts # should override this method. :-) # def pred(x): return AXUtilities.is_page_tab(x) or AXUtilities.is_frame(x) ancestor = AXObject.find_ancestor(obj, pred) name = "" try: text = self._script.utilities.displayedText(ancestor) if text.lower().strip() != self._script.name.lower().strip(): name = text except Exception: pass # Some applications don't trash their page tab list when there is # only one active chat, but instead they remove the text or hide # the item. Therefore, we'll give it one more shot. # if not name: ancestor = AXObject.find_ancestor(obj, AXUtilities.is_frame) try: text = self._script.utilities.displayedText(ancestor) if text.lower().strip() != self._script.name.lower().strip(): name = text except Exception: pass return name def isAutoCompletedTextEvent(self, event): """Returns True if event is associated with text being autocompleted. Arguments: - event: the accessible event being examined """ if not AXUtilities.is_text(event.source): return False lastKey, mods = self._script.utilities.lastKeyAndModifiers() if lastKey == "Tab" and event.any_data and event.any_data != "\t": return True return False def isTypingStatusChangedEvent(self, event): """Returns True if event is associated with a change in typing status. Arguments: - event: the accessible event being examined """ # TODO - JD: I still need to figure this one out. Pidgin seems to # no longer be presenting this change in the conversation history # as it was doing before. And I'm not yet sure what other apps do. # In the meantime, scripts can override this. # return False