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# -*- coding: utf-8 -*- 

 

''' 

Task Coach - Your friendly task manager 

Copyright (C) 2004-2010 Task Coach developers <developers@taskcoach.org> 

 

Task Coach is free software: you can redistribute it and/or modify 

it under the terms of the GNU General Public License as published by 

the Free Software Foundation, either version 3 of the License, or 

(at your option) any later version. 

 

Task Coach 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 General Public License for more details. 

 

You should have received a copy of the GNU General Public License 

along with this program.  If not, see <http://www.gnu.org/licenses/>. 

''' 

 

import wx 

from taskcoachlib import patterns 

from taskcoachlib.domain import base, date, categorizable, note, attachment 

from taskcoachlib.domain.attribute import color 

 

 

class Task(note.NoteOwner, attachment.AttachmentOwner, 

           categorizable.CategorizableCompositeObject): 

 

    def __init__(self, subject='', description='', 

                 dueDateTime=None, startDateTime=None, completionDateTime=None, 

                 budget=None, priority=0, id=None, hourlyFee=0, # pylint: disable-msg=W0622 

                 fixedFee=0, reminder=None, categories=None, 

                 efforts=None, shouldMarkCompletedWhenAllChildrenCompleted=None, 

                 recurrence=None, percentageComplete=0, prerequisites=None, 

                 dependencies=None, *args, **kwargs): 

        kwargs['id'] = id 

        kwargs['subject'] = subject 

        kwargs['description'] = description 

        kwargs['categories'] = categories 

        super(Task, self).__init__(*args, **kwargs) 

        self.__dueDateTime = base.Attribute(dueDateTime or date.DateTime(), self, 

                                            self.dueDateTimeEvent) 

        self.__startDateTime = base.Attribute(startDateTime or date.DateTime(), self, 

                                              self.startDateTimeEvent) 

        self.__completionDateTime = base.Attribute(completionDateTime or date.DateTime(), 

                                                   self, self.completionDateTimeEvent) 

        percentageComplete = 100 if self.__completionDateTime.get() != date.DateTime() else percentageComplete 

        self.__percentageComplete = base.Attribute(percentageComplete, 

                                                   self, self.percentageCompleteEvent) 

        self.__budget = base.Attribute(budget or date.TimeDelta(), self, 

                                       self.budgetEvent) 

        self._efforts = efforts or [] 

        self.__priority = base.Attribute(priority, self, self.priorityEvent) 

        self.__hourlyFee = base.Attribute(hourlyFee, self, self.hourlyFeeEvent) 

        self.__fixedFee = base.Attribute(fixedFee, self, self.fixedFeeEvent) 

        self.__reminder = base.Attribute(reminder, self, self.reminderEvent) 

        self._recurrence = date.Recurrence() if recurrence is None else recurrence 

        self.__prerequisites = base.SetAttribute(prerequisites or [], self, 

                                                 changeEvent=self.prerequisitesEvent) 

        self.__dependencies = base.SetAttribute(dependencies or [], self, 

                                                changeEvent=self.dependenciesEvent) 

        self._shouldMarkCompletedWhenAllChildrenCompleted = \ 

            shouldMarkCompletedWhenAllChildrenCompleted 

        for effort in self._efforts: 

            effort.setTask(self) 

 

    @patterns.eventSource 

    def __setstate__(self, state, event=None): 

        super(Task, self).__setstate__(state, event=event) 

        self.setStartDateTime(state['startDateTime'], event=event) 

        self.setDueDateTime(state['dueDateTime'], event=event) 

        self.setCompletionDateTime(state['completionDateTime'], event=event) 

        self.setPercentageComplete(state['percentageComplete'], event=event) 

        self.setRecurrence(state['recurrence'], event=event) 

        self.setReminder(state['reminder'], event=event) 

        self.setEfforts(state['efforts'], event=event) 

        self.setBudget(state['budget'], event=event) 

        self.setPriority(state['priority'], event=event) 

        self.setHourlyFee(state['hourlyFee'], event=event) 

        self.setFixedFee(state['fixedFee'], event=event) 

        self.setPrerequisites(state['prerequisites'], event=event) 

        self.setDependencies(state['dependencies'], event=event) 

        self.setShouldMarkCompletedWhenAllChildrenCompleted( \ 

            state['shouldMarkCompletedWhenAllChildrenCompleted'], event=event) 

 

    def __getstate__(self): 

        state = super(Task, self).__getstate__() 

        state.update(dict(dueDateTime=self.__dueDateTime.get(), 

            startDateTime=self.__startDateTime.get(), 

            completionDateTime=self.__completionDateTime.get(), 

            percentageComplete=self.__percentageComplete.get(), 

            children=self.children(), parent=self.parent(), 

            efforts=self._efforts, budget=self.__budget.get(), 

            priority=self.__priority.get(), 

            hourlyFee=self.__hourlyFee.get(), fixedFee=self.__fixedFee.get(), 

            recurrence=self._recurrence.copy(), 

            reminder=self.__reminder.get(), 

            prerequisites=self.__prerequisites.get(), 

            dependencies=self.__dependencies.get(), 

            shouldMarkCompletedWhenAllChildrenCompleted=\ 

                self._shouldMarkCompletedWhenAllChildrenCompleted)) 

        return state 

 

    def __getcopystate__(self): 

        state = super(Task, self).__getcopystate__() 

        state.update(dict(dueDateTime=self.__dueDateTime.get(), 

            startDateTime=self.__startDateTime.get(), 

            completionDateTime=self.__completionDateTime.get(), 

            percentageComplete=self.__percentageComplete.get(), 

            efforts=[effort.copy() for effort in self._efforts], 

            budget=self.__budget.get(), priority=self.__priority.get(), 

            hourlyFee=self.__hourlyFee.get(), fixedFee=self.__fixedFee.get(), 

            recurrence=self._recurrence.copy(), 

            reminder=self.__reminder.get(), 

            shouldMarkCompletedWhenAllChildrenCompleted=\ 

                self._shouldMarkCompletedWhenAllChildrenCompleted)) 

        return state 

 

    def allChildrenCompleted(self): 

        ''' Return whether all children (non-recursively) are completed. ''' 

        children = self.children() 

        return all(child.completed() for child in children) if children \ 

            else False 

 

    def newChild(self, subject='New subtask'): # pylint: disable-msg=W0221 

        ''' Subtask constructor ''' 

        return super(Task, self).newChild(subject=subject, 

            dueDateTime=self.dueDateTime(), 

            startDateTime=max(date.Now(), self.startDateTime()), parent=self) 

 

    @patterns.eventSource 

    def addChild(self, child, event=None): 

        if child in self.children(): 

            return 

        super(Task, self).addChild(child, event=event) 

        self.childChangeEvent(child, event) 

        if self.shouldBeMarkedCompleted(): 

            self.setCompletionDateTime(child.completionDateTime(), event=event) 

        elif self.completed() and not child.completed(): 

            self.setCompletionDateTime(date.DateTime(), event=event) 

        if child.dueDateTime() > self.dueDateTime(): 

            self.setDueDateTime(child.dueDateTime(), event=event) 

        if child.startDateTime() < self.startDateTime(): 

            self.setStartDateTime(child.startDateTime(), event=event) 

 

    @patterns.eventSource 

    def removeChild(self, child, event=None): 

        if child not in self.children(): 

            return 

        super(Task, self).removeChild(child, event=event) 

        self.childChangeEvent(child, event) 

        if self.shouldBeMarkedCompleted(): 

            # The removed child was the last uncompleted child 

            self.setCompletionDateTime(date.Now(), event=event) 

 

    def childChangeEvent(self, child, event): 

        childHasTimeSpent = child.timeSpent(recursive=True) 

        childHasBudget = child.budget(recursive=True) 

        childHasBudgetLeft = child.budgetLeft(recursive=True) 

        childHasRevenue = child.revenue(recursive=True) 

        childPriority = child.priority(recursive=True) 

        # Determine what changes due to the child being added or removed: 

        if childHasTimeSpent: 

            self.timeSpentEvent(event, *child.efforts()) 

        if childHasRevenue: 

            self.revenueEvent(event) 

        if childHasBudget: 

            self.budgetEvent(event) 

        if childHasBudgetLeft or (childHasTimeSpent and \ 

                                  (childHasBudget or self.budget())): 

            self.budgetLeftEvent(event) 

        if childPriority > self.priority(): 

            self.priorityEvent(event) 

        if child.isBeingTracked(recursive=True): 

            activeEfforts = child.activeEfforts(recursive=True) 

            if self.isBeingTracked(recursive=True): 

                self.startTrackingEvent(event, *activeEfforts) # pylint: disable-msg=W0142 

            else: 

                self.stopTrackingEvent(event, *activeEfforts) # pylint: disable-msg=W0142 

 

    @patterns.eventSource 

    def setSubject(self, subject, event=None): 

        super(Task, self).setSubject(subject, event=event) 

        # The subject of a dependency of our prerequisites has changed, notify: 

        for prerequisite in self.prerequisites(): 

            event.addSource(prerequisite, subject, type='task.dependency.subject') 

        # The subject of a prerequisite of our dependencies has changed, notify: 

        for dependency in self.dependencies(): 

            event.addSource(dependency, subject, type='task.prerequisite.subject') 

 

    # Due date 

 

    def dueDateTime(self, recursive=False): 

        if recursive: 

            childrenDueDateTimes = [child.dueDateTime(recursive=True) for child in \ 

                                    self.children() if not child.completed()] 

            return min(childrenDueDateTimes + [self.__dueDateTime.get()]) 

        else: 

            return self.__dueDateTime.get() 

 

    def setDueDateTime(self, dueDate, event=None): 

        self.__dueDateTime.set(dueDate, event=event) 

 

    def dueDateTimeEvent(self, event): 

        dueDateTime = self.dueDateTime() 

        event.addSource(self, dueDateTime, type='task.dueDateTime') 

        for child in self.children(): 

            if child.dueDateTime() > dueDateTime: 

                child.setDueDateTime(dueDateTime, event) 

        if self.parent(): 

            parent = self.parent() 

            if dueDateTime > parent.dueDateTime(): 

                parent.setDueDateTime(dueDateTime, event) 

 

    @staticmethod 

    def dueDateTimeSortFunction(**kwargs): 

        recursive = kwargs.get('treeMode', False) 

        return lambda task: task.dueDateTime(recursive=recursive) 

 

    @classmethod 

    def dueDateTimeSortEventTypes(class_): 

        ''' The event types that influence the due date time sort order. ''' 

        return ('task.dueDateTime',) 

 

    # Start date 

 

    def startDateTime(self, recursive=False): 

        if recursive: 

            childrenStartDateTimes = [child.startDateTime(recursive=True) for child in \ 

                                      self.children() if not child.completed()] 

            return min(childrenStartDateTimes + [self.__startDateTime.get()]) 

        else: 

            return self.__startDateTime.get() 

 

    def setStartDateTime(self, startDateTime, event=None): 

        self.__startDateTime.set(startDateTime, event=event) 

 

    def startDateTimeEvent(self, event): 

        startDateTime = self.startDateTime() 

        event.addSource(self, startDateTime, type='task.startDateTime') 

        if not self.recurrence(recursive=True, upwards=True): 

            for child in self.children(): 

                if startDateTime > child.startDateTime(): 

                    child.setStartDateTime(startDateTime, event) 

            parent = self.parent() 

            if parent and startDateTime < parent.startDateTime(): 

                parent.setStartDateTime(startDateTime, event) 

 

    @staticmethod 

    def startDateTimeSortFunction(**kwargs): 

        recursive = kwargs.get('treeMode', False) 

        return lambda task: task.startDateTime(recursive=recursive) 

 

    @classmethod 

    def startDateTimeSortEventTypes(class_): 

        ''' The event types that influence the start date time sort order. ''' 

        return ('task.startDateTime',) 

 

    def timeLeft(self, recursive=False): 

        return self.dueDateTime(recursive) - date.Now() 

 

    @staticmethod 

    def timeLeftSortFunction(**kwargs): 

        recursive = kwargs.get('treeMode', False) 

        return lambda task: task.timeLeft(recursive=recursive) 

 

    @classmethod 

    def timeLeftSortEventTypes(class_): 

        ''' The event types that influence the time left sort order. ''' 

        return ('task.dueDateTime',) 

 

    # Completion date 

 

    def completionDateTime(self, recursive=False): 

        if recursive: 

            childrenCompletionDateTimes = [child.completionDateTime(recursive=True) \ 

                for child in self.children() if child.completed()] 

            return max(childrenCompletionDateTimes + [self.__completionDateTime.get()]) 

        else: 

            return self.__completionDateTime.get() 

 

    @patterns.eventSource 

    def setCompletionDateTime(self, completionDateTime=None, event=None): 

        completionDateTime = completionDateTime or date.Now() 

        if completionDateTime == self.__completionDateTime.get(): 

            return 

        if completionDateTime != date.DateTime() and self.recurrence(): 

            self.recur(event=event) 

        else: 

            parent = self.parent() 

            if parent: 

                oldParentPriority = parent.priority(recursive=True) 

            self.__completionDateTime.set(completionDateTime, event=event) 

            if parent and parent.priority(recursive=True) != oldParentPriority: 

                self.priorityEvent(event) 

            if completionDateTime != date.DateTime(): 

                self.setReminder(None, event) 

            self.setPercentageComplete(100 if completionDateTime != date.DateTime() else 0, 

                                       event=event) 

            if parent: 

                if self.completed(): 

                    if parent.shouldBeMarkedCompleted(): 

                        parent.setCompletionDateTime(completionDateTime, event=event) 

                else: 

                    if parent.completed(): 

                        parent.setCompletionDateTime(date.DateTime(), event=event) 

            if self.completed(): 

                for child in self.children(): 

                    if not child.completed(): 

                        child.setRecurrence(event=event) 

                        child.setCompletionDateTime(completionDateTime, event=event) 

                if self.isBeingTracked(): 

                    self.stopTracking(event=event) 

 

    def completionDateTimeEvent(self, event): 

        completionDateTime = self.completionDateTime() 

        event.addSource(self, completionDateTime, type='task.completionDateTime') 

 

    def shouldBeMarkedCompleted(self): 

        ''' Return whether this task should be marked completed. It should be 

            marked completed when 1) it's not completed, 2) all of its children 

            are completed, 3) its setting says it should be completed when 

            all of its children are completed. ''' 

        shouldMarkCompletedAccordingToSetting = \ 

            self.settings.getboolean('behavior', # pylint: disable-msg=E1101 

                'markparentcompletedwhenallchildrencompleted') 

        shouldMarkCompletedAccordingToTask = \ 

            self.shouldMarkCompletedWhenAllChildrenCompleted() 

        return ((shouldMarkCompletedAccordingToTask == True) or \ 

                ((shouldMarkCompletedAccordingToTask == None) and \ 

                  shouldMarkCompletedAccordingToSetting)) and \ 

               (not self.completed()) and self.allChildrenCompleted() 

 

    @staticmethod 

    def completionDateTimeSortFunction(**kwargs): 

        recursive = kwargs.get('treeMode', False) 

        return lambda task: task.completionDateTime(recursive=recursive) 

 

    @classmethod 

    def completionDateTimeSortEventTypes(class_): 

        ''' The event types that influence the completion date time sort order. ''' 

        return ('task.completionDateTime',) 

 

    # Task state 

 

    def completed(self): 

        return self.completionDateTime() != date.DateTime() 

 

    def overdue(self): 

        return self.dueDateTime() < date.Now() and not self.completed() 

 

    def inactive(self): 

        if self.completed(): 

            return False # Completed tasks are never inactive 

        if date.Now() < self.startDateTime() < date.DateTime(): 

            return True # Start at a specific future datetime, so inactive now 

        if self.prerequisites(): 

            # We're inactive as long as not all prerequisites are completed 

            return any([not prerequisite.completed() for prerequisite in self.prerequisites()]) 

        else: 

            # We're inactive only if we have no startDateTime at all  

            return self.startDateTime() == date.DateTime() 

 

    def active(self): 

        return not self.inactive() and not self.completed() 

 

    def dueSoon(self): 

        hours = self.settings.getint('behavior', 'duesoonhours') # pylint: disable-msg=E1101 

        return (0 <= self.timeLeft().hours() < hours and not self.completed()) 

 

   # effort related methods: 

 

    def efforts(self, recursive=False): 

        childEfforts = [] 

        if recursive: 

            for child in self.children(): 

                childEfforts.extend(child.efforts(recursive=True)) 

        return self._efforts + childEfforts 

 

    def isBeingTracked(self, recursive=False): 

        return self.activeEfforts(recursive) 

 

    def activeEfforts(self, recursive=False): 

        return [effort for effort in self.efforts(recursive) \ 

            if effort.isBeingTracked()] 

 

    @patterns.eventSource 

    def addEffort(self, effort, event=None): 

        if effort in self._efforts: 

            return 

        wasTracking = self.isBeingTracked() 

        self._efforts.append(effort) 

        self.addEffortEvent(event, effort) 

        if effort.isBeingTracked() and not wasTracking: 

            self.startTrackingEvent(event, effort) 

        self.timeSpentEvent(event, effort) 

 

    def addEffortEvent(self, event, *efforts): 

        event.addSource(self, *efforts, **dict(type='task.effort.add')) 

 

    def startTrackingEvent(self, event, *efforts): 

        for ancestor in [self] + self.ancestors(): 

            event.addSource(ancestor, *efforts, 

                            **dict(type=ancestor.trackStartEventType())) 

 

    @patterns.eventSource 

    def removeEffort(self, effort, event=None): 

        if effort not in self._efforts: 

            return 

        self._efforts.remove(effort) 

        self.removeEffortEvent(event, effort) 

        if effort.isBeingTracked() and not self.isBeingTracked(): 

            self.stopTrackingEvent(event, effort) 

        self.timeSpentEvent(event, effort) 

 

    def removeEffortEvent(self, event, *efforts): 

        event.addSource(self, *efforts, **dict(type='task.effort.remove')) 

 

    @patterns.eventSource 

    def stopTracking(self, event=None): 

        for effort in self.activeEfforts(): 

            effort.setStop(event=event) 

 

    def stopTrackingEvent(self, event, *efforts): 

        for ancestor in [self] + self.ancestors(): 

            event.addSource(ancestor, *efforts, 

                            **dict(type=ancestor.trackStopEventType())) 

 

    @patterns.eventSource 

    def setEfforts(self, efforts, event=None): 

        if efforts == self._efforts: 

            return 

        oldEfforts = self._efforts 

        self._efforts = efforts 

        self.removeEffortEvent(event, oldEfforts) 

        self.addEffortEvent(event, efforts) 

 

    @classmethod 

    def trackStartEventType(class_): 

        return '%s.track.start'%class_ 

 

    @classmethod 

    def trackStopEventType(class_): 

        return '%s.track.stop'%class_ 

 

    # Time spent 

 

    def timeSpent(self, recursive=False): 

        return sum((effort.duration() for effort in self.efforts(recursive)), 

                   date.TimeDelta()) 

 

    def timeSpentEvent(self, event, *efforts): 

        event.addSource(self, *efforts, **dict(type='task.timeSpent')) 

        for ancestor in self.ancestors(): 

            event.addSource(ancestor, *efforts, **dict(type='task.timeSpent')) 

        if self.budget(recursive=True): 

            self.budgetLeftEvent(event) 

        if self.hourlyFee() > 0: 

            self.revenueEvent(event) 

 

    @staticmethod 

    def timeSpentSortFunction(**kwargs): 

        recursive = kwargs.get('treeMode', False) 

        return lambda task: task.timeSpent(recursive=recursive) 

 

    @classmethod 

    def timeSpentSortEventTypes(class_): 

        ''' The event types that influence the time spent sort order. ''' 

        return ('task.timeSpent',) 

 

 

    # Budget 

 

    def budget(self, recursive=False): 

        result = self.__budget.get() 

        if recursive: 

            for task in self.children(): 

                result += task.budget(recursive) 

        return result 

 

    def setBudget(self, budget, event=None): 

        self.__budget.set(budget, event=event) 

 

    def budgetEvent(self, event): 

        event.addSource(self, self.budget(), type='task.budget') 

        for ancestor in self.ancestors(): 

            event.addSource(ancestor, ancestor.budget(recursive=True), 

                            type='task.budget') 

        self.budgetLeftEvent(event) 

 

    @staticmethod 

    def budgetSortFunction(**kwargs): 

        recursive = kwargs.get('treeMode', False) 

        return lambda task: task.budget(recursive=recursive) 

 

    @classmethod 

    def budgetSortEventTypes(class_): 

        ''' The event types that influence the budget sort order. ''' 

        return ('task.budget',) 

 

    # Budget left 

 

    def budgetLeft(self, recursive=False): 

        budget = self.budget(recursive) 

        return budget - self.timeSpent(recursive) if budget else budget 

 

    def budgetLeftEvent(self, event): 

        event.addSource(self, self.budgetLeft(), type='task.budgetLeft') 

        for ancestor in self.ancestors(): 

            event.addSource(ancestor, ancestor.budgetLeft(recursive=True), 

                            type='task.budgetLeft') 

 

    @staticmethod 

    def budgetLeftSortFunction(**kwargs): 

        recursive = kwargs.get('treeMode', False) 

        return lambda task: task.budgetLeft(recursive=recursive) 

 

    @classmethod 

    def budgetLeftSortEventTypes(class_): 

        ''' The event types that influence the budget left sort order. ''' 

        return ('task.budgetLeft',) 

 

    # Foreground color 

 

    def foregroundColor(self, recursive=False): 

        fgColor = super(Task, self).foregroundColor(recursive) 

        if not recursive: 

            return fgColor 

        statusColor = self.statusColor() 

        if statusColor == wx.BLACK: 

            return fgColor 

        elif fgColor == None: 

            return statusColor 

        else: 

            return color.ColorMixer.mix((fgColor, statusColor)) 

 

    def statusColor(self): 

        ''' Return the current color of task, based on its status (completed, 

            overdue, duesoon, inactive, or active). ''' 

        if self.completed(): 

            status = 'completed' 

        elif self.overdue(): 

            status = 'overdue' 

        elif self.dueSoon(): 

            status = 'duesoon' 

        elif self.inactive(): 

            status = 'inactive' 

        else: 

            status = 'active' 

        return self.colorForStatus(status) 

 

    @classmethod 

    def colorForStatus(class_, status): 

        return wx.Colour(*eval(class_.settings.get('color', '%stasks'%status))) # pylint: disable-msg=E1101 

 

    def foregroundColorChangedEvent(self, event): 

        super(Task, self).foregroundColorChangedEvent(event) 

        fgColor = self.foregroundColor() 

        for task in [self] + self.childrenWithoutOwnForegroundColor(): 

            for eachEffort in task.efforts(): 

                event.addSource(eachEffort, fgColor, 

                                type=eachEffort.foregroundColorChangedEventType()) 

 

    # Background color 

 

    def backgroundColorChangedEvent(self, event): 

        super(Task, self).backgroundColorChangedEvent(event) 

        bgColor = self.backgroundColor() 

        for task in [self] + self.childrenWithoutOwnBackgroundColor(): 

            for eachEffort in task.efforts(): 

                event.addSource(eachEffort, bgColor, 

                                type=eachEffort.backgroundColorChangedEventType()) 

 

    # Icon 

 

    def icon(self, recursive=False): 

        myIcon = super(Task, self).icon(recursive=False) 

        if not myIcon and recursive: 

            myIcon = self.categoryIcon() or self.__stateBasedIcon(selected=False) 

        return self.pluralOrSingularIcon(myIcon) 

 

    def selectedIcon(self, recursive=False): 

        myIcon = super(Task, self).selectedIcon(recursive=False) 

        if not myIcon and recursive: 

            myIcon = self.categorySelectedIcon() or self.__stateBasedIcon(selected=True) 

        return self.pluralOrSingularIcon(myIcon) 

 

    stateColorMap = (('completed', '_green'), ('overdue', '_red'), 

                     ('dueSoon', '_orange'), ('inactive', '_grey')) 

 

    def __stateBasedIcon(self, selected=False): 

        if self.isBeingTracked(): 

            taskIcon = 'clock' 

        else: 

            taskIcon = 'led' 

            for state, stateColor in self.stateColorMap: 

                if getattr(self, state)(): 

                    taskIcon += stateColor 

                    break 

            else: 

                taskIcon += '_blue' 

            taskIcon = self.pluralOrSingularIcon(taskIcon+'_icon')[:-len('_icon')] 

            hasChildren = any(child for child in self.children() if not child.isDeleted()) 

            taskIcon += '_open' if selected and hasChildren else '' 

        return taskIcon + '_icon' 

 

    # percentage Complete 

 

    def percentageComplete(self, recursive=False): 

        myPercentage = self.__percentageComplete.get() 

        if recursive: 

            # We ignore our own percentageComplete when we are marked complete 

            # when all children are completed *and* our percentageComplete is 0 

            percentages = [] 

            if myPercentage > 0 or not self.shouldMarkCompletedWhenAllChildrenCompleted(): 

                percentages.append(myPercentage) 

            percentages.extend([child.percentageComplete(recursive) for child in self.children()]) 

            return sum(percentages)/len(percentages) if percentages else 0 

        else: 

            return myPercentage 

 

    @patterns.eventSource 

    def setPercentageComplete(self, percentage, event=None): 

        if percentage == self.percentageComplete(): 

            return 

        oldPercentage = self.percentageComplete() 

        self.__percentageComplete.set(percentage, event=event) 

        if percentage == 100 and oldPercentage != 100 and self.completionDateTime() == date.DateTime(): 

            self.setCompletionDateTime(date.Now(), event=event) 

        elif oldPercentage == 100 and percentage != 100 and self.completionDateTime() != date.DateTime(): 

            self.setCompletionDateTime(date.DateTime(), event=event) 

 

    def percentageCompleteEvent(self, event): 

        event.addSource(self, self.percentageComplete(), 

                        type=self.percentageCompleteChangedEventType()) 

        for ancestor in self.ancestors(): 

            event.addSource(ancestor, ancestor.percentageComplete(recursive=True), 

                            type='task.percentageComplete') 

 

    @staticmethod 

    def percentageCompleteSortFunction(**kwargs): 

        recursive = kwargs.get('treeMode', False) 

        return lambda task: task.percentageComplete(recursive=recursive) 

 

    @classmethod 

    def percentageCompleteSortEventTypes(class_): 

        ''' The event types that influence the percentage complete sort order. ''' 

        return ('task.percentageComplete',) 

 

    @classmethod 

    def percentageCompleteChangedEventType(class_): 

        return 'task.percentageComplete' 

 

    # priority 

 

    def priority(self, recursive=False): 

        if recursive: 

            childPriorities = [child.priority(recursive=True) \ 

                               for child in self.children() \ 

                               if not child.completed()] 

            return max(childPriorities + [self.__priority.get()]) 

        else: 

            return self.__priority.get() 

 

    def setPriority(self, priority, event=None): 

        self.__priority.set(priority, event=event) 

 

    def priorityEvent(self, event): 

        event.addSource(self, self.priority(), type='task.priority') 

        for ancestor in self.ancestors(): 

            event.addSource(ancestor, ancestor.priority(recursive=True), 

                            type='task.priority') 

 

    @staticmethod 

    def prioritySortFunction(**kwargs): 

        recursive = kwargs.get('treeMode', False) 

        return lambda task: task.priority(recursive=recursive) 

 

    @classmethod 

    def prioritySortEventTypes(class_): 

        ''' The event types that influence the priority sort order. ''' 

        return ('task.priority',) 

 

    # Hourly fee 

 

    def hourlyFee(self, recursive=False): # pylint: disable-msg=W0613 

        return self.__hourlyFee.get() 

 

    def setHourlyFee(self, hourlyFee, event=None): 

        self.__hourlyFee.set(hourlyFee, event=event) 

 

    def hourlyFeeEvent(self, event): 

        event.addSource(self, self.hourlyFee(), 

                        type=self.hourlyFeeChangedEventType()) 

        if self.timeSpent() > date.TimeDelta(): 

            for objectWithRevenue in [self] + self.efforts(): 

                objectWithRevenue.revenueEvent(event) 

 

    @classmethod 

    def hourlyFeeChangedEventType(class_): 

        return '%s.hourlyFee'%class_ 

 

    @staticmethod # pylint: disable-msg=W0613 

    def hourlyFeeSortFunction(**kwargs): 

        return lambda task: task.hourlyFee() 

 

    @classmethod 

    def hourlyFeeSortEventTypes(class_): 

        ''' The event types that influence the hourly fee sort order. ''' 

        return (class_.hourlyFeeChangedEventType(),) 

 

    # Fixed fee 

 

    def fixedFee(self, recursive=False): 

        childFixedFees = sum(child.fixedFee(recursive) for child in 

                             self.children()) if recursive else 0 

        return self.__fixedFee.get() + childFixedFees 

 

    def setFixedFee(self, fixedFee, event=None): 

        self.__fixedFee.set(fixedFee, event=event) 

 

    def fixedFeeEvent(self, event): 

        event.addSource(self, self.fixedFee(), type='task.fixedFee') 

        for ancestor in self.ancestors(): 

            event.addSource(ancestor, ancestor.fixedFee(recursive=True), 

                            type='task.fixedFee') 

        self.revenueEvent(event) 

 

    @staticmethod 

    def fixedFeeSortFunction(**kwargs): 

        recursive = kwargs.get('treeMode', False) 

        return lambda task: task.fixedFee(recursive=recursive) 

 

    @classmethod 

    def fixedFeeSortEventTypes(class_): 

        ''' The event types that influence the fixed fee sort order. ''' 

        return ('task.fixedFee',) 

 

    # Revenue         

 

    def revenue(self, recursive=False): 

        childRevenues = sum(child.revenue(recursive) for child in 

                            self.children()) if recursive else 0 

        return self.timeSpent().hours() * self.hourlyFee() + self.fixedFee() + \ 

               childRevenues 

 

    def revenueEvent(self, event): 

        event.addSource(self, self.revenue(), type='task.revenue') 

        for ancestor in self.ancestors(): 

            event.addSource(ancestor, ancestor.revenue(recursive=True), 

                            type='task.revenue') 

 

    @staticmethod 

    def revenueSortFunction(**kwargs): 

        recursive = kwargs.get('treeMode', False) 

        return lambda task: task.revenue(recursive=recursive) 

 

    @classmethod 

    def revenueSortEventTypes(class_): 

        ''' The event types that influence the revenue sort order. ''' 

        return ('task.revenue',) 

 

    # reminder 

 

    def reminder(self, recursive=False): # pylint: disable-msg=W0613 

        if recursive: 

            reminders = [child.reminder(recursive=True) for child in \ 

                         self.children()] + [self.__reminder.get()] 

            reminders = [reminder for reminder in reminders if reminder] 

            return min(reminders) if reminders else None 

        else: 

            return self.__reminder.get() 

 

    def setReminder(self, reminderDateTime=None, event=None): 

        if reminderDateTime == date.DateTime.max: 

            reminderDateTime = None 

        self.__reminder.set(reminderDateTime, event=event) 

 

    def reminderEvent(self, event): 

        event.addSource(self, self.reminder(), type='task.reminder') 

 

    @staticmethod 

    def reminderSortFunction(**kwargs): 

        recursive = kwargs.get('treeMode', False) 

        return lambda task: task.reminder(recursive=recursive) or date.DateTime.max 

 

    @classmethod 

    def reminderSortEventTypes(class_): 

        ''' The event types that influence the reminder sort order. ''' 

        return ('task.reminder',) 

 

    # Recurrence 

 

    def recurrence(self, recursive=False, upwards=False): 

        if not self._recurrence and recursive and upwards and self.parent(): 

            return self.parent().recurrence(recursive, upwards) 

        elif recursive and not upwards: 

            recurrences = [child.recurrence() for child in self.children(recursive)] 

            recurrences.append(self._recurrence) 

            recurrences = [r for r in recurrences if r] 

            return min(recurrences) if recurrences else self._recurrence 

        else: 

            return self._recurrence 

 

    @patterns.eventSource 

    def setRecurrence(self, recurrence=None, event=None): 

        recurrence = recurrence or date.Recurrence() 

        if recurrence == self._recurrence: 

            return 

        self._recurrence = recurrence 

        event.addSource(self, recurrence, type='task.recurrence') 

 

    @patterns.eventSource 

    def recur(self, event=None): 

        self.setCompletionDateTime(date.DateTime(), event=event) 

        recur = self.recurrence(recursive=True, upwards=True) 

        nextStartDateTime = recur(self.startDateTime(), next=False) 

        self.setStartDateTime(nextStartDateTime, event=event) 

        nextDueDateTime = recur(self.dueDateTime(), next=False) 

        self.setDueDateTime(nextDueDateTime, event=event) 

        if self.reminder(): 

            nextReminder = recur(self.reminder(), next=False) 

            self.setReminder(nextReminder, event=event) 

        for child in self.children(): 

            if not child.recurrence(): 

                child.recur(event=event) 

        self.recurrence()(next=True) 

 

    @staticmethod 

    def recurrenceSortFunction(**kwargs): 

        recursive = kwargs.get('treeMode', False) 

        return lambda task: task.recurrence(recursive=recursive) 

 

    @classmethod 

    def recurrenceSortEventTypes(class_): 

        ''' The event types that influence the recurrence sort order. ''' 

        return ('task.recurrence',) 

 

    # Prerequisites 

 

    def prerequisites(self, recursive=False): 

        prerequisites = self.__prerequisites.get() 

        if recursive: 

            for child in self.children(): 

                prerequisites |= child.prerequisites(recursive) 

        return prerequisites 

 

    def setPrerequisites(self, prerequisites, event=None): 

        self.__prerequisites.set(set(prerequisites), event=event) 

 

    def addPrerequisites(self, prerequisites, event=None): 

        self.__prerequisites.add(set(prerequisites), event=event) 

 

    def removePrerequisites(self, prerequisites, event=None): 

        self.__prerequisites.remove(set(prerequisites), event=event) 

 

    def addTaskAsDependencyOf(self, prerequisites, event=None): 

        for prerequisite in prerequisites: 

            prerequisite.addDependencies([self], event=event) 

 

    def removeTaskAsDependencyOf(self, prerequisites, event=None): 

        for prerequisite in prerequisites: 

            prerequisite.removeDependencies([self], event=event) 

 

    def prerequisitesEvent(self, event, *prerequisites): 

        event.addSource(self, *prerequisites, **dict(type='task.prerequisites')) 

 

    @staticmethod 

    def prerequisitesSortFunction(**kwargs): 

        ''' Return a sort key for sorting by prerequisites. Since a task can  

            have multiple prerequisites we first sort the prerequisites by their 

            subjects. If the sorter is in tree mode, we also take the  

            prerequisites of the children of the task into account, after the  

            prerequisites of the task itself. ''' 

        def sortKeyFunction(task): 

            def sortedSubjects(items): 

                return sorted([item.subject(recursive=True) for item in items]) 

            prerequisites = task.prerequisites() 

            sortedPrerequisiteSubjects = sortedSubjects(prerequisites) 

            if kwargs.get('treeMode', False): 

                childPrerequisites = task.prerequisites(recursive=True) - prerequisites 

                sortedPrerequisiteSubjects.extend(sortedSubjects(childPrerequisites)) 

            return sortedPrerequisiteSubjects 

        return sortKeyFunction 

 

    @classmethod 

    def prerequisitesSortEventTypes(class_): 

        ''' The event types that influence the prerequisites sort order. ''' 

        return ('task.prerequisites') 

 

    # Dependencies 

 

    def dependencies(self, recursive=False): 

        dependencies = self.__dependencies.get() 

        if recursive: 

            for child in self.children(): 

                dependencies |= child.dependencies(recursive) 

        return dependencies 

 

    def setDependencies(self, dependencies, event=None): 

        self.__dependencies.set(set(dependencies), event=event) 

 

    def addDependencies(self, dependencies, event=None): 

        self.__dependencies.add(set(dependencies), event=event) 

 

    def removeDependencies(self, dependencies, event=None): 

        self.__dependencies.remove(set(dependencies), event=event) 

 

    def addTaskAsPrerequisiteOf(self, dependencies, event=None): 

        for dependency in dependencies: 

            dependency.addPrerequisites([self], event=event) 

 

    def removeTaskAsPrerequisiteOf(self, dependencies, event=None): 

        for dependency in dependencies: 

            dependency.removePrerequisites([self], event=event) 

 

    def dependenciesEvent(self, event, *dependencies): 

        event.addSource(self, *dependencies, **dict(type='task.dependencies')) 

 

    @staticmethod 

    def dependenciesSortFunction(**kwargs): 

        ''' Return a sort key for sorting by dependencies. Since a task can  

            have multiple dependencies we first sort the dependencies by their 

            subjects. If the sorter is in tree mode, we also take the  

            dependencies of the children of the task into account, after the  

            dependencies of the task itself. ''' 

        def sortKeyFunction(task): 

            def sortedSubjects(items): 

                return sorted([item.subject(recursive=True) for item in items]) 

            dependencies = task.dependencies() 

            sortedDependencySubjects = sortedSubjects(dependencies) 

            if kwargs.get('treeMode', False): 

                childDependencies = task.dependencies(recursive=True) - dependencies 

                sortedDependencySubjects.extend(sortedSubjects(childDependencies)) 

            return sortedDependencySubjects 

        return sortKeyFunction 

 

    @classmethod 

    def dependenciesSortEventTypes(class_): 

        ''' The event types that influence the dependencies sort order. ''' 

        return ('task.dependencies',) 

 

    # behavior 

 

    @patterns.eventSource 

    def setShouldMarkCompletedWhenAllChildrenCompleted(self, newValue, event=None): 

        if newValue == self._shouldMarkCompletedWhenAllChildrenCompleted: 

            return 

        self._shouldMarkCompletedWhenAllChildrenCompleted = newValue 

        event.addSource(self, newValue, 

                        type='task.setting.shouldMarkCompletedWhenAllChildrenCompleted') 

        event.addSource(self, self.percentageComplete(recursive=True), 

                        type='task.percentageComplete') 

 

    def shouldMarkCompletedWhenAllChildrenCompleted(self): 

        return self._shouldMarkCompletedWhenAllChildrenCompleted 

 

    @classmethod 

    def modificationEventTypes(class_): 

        eventTypes = super(Task, class_).modificationEventTypes() 

        return eventTypes + ['task.dueDateTime', 'task.startDateTime', 

                             'task.completionDateTime', 

                             'task.effort.add', 'task.effort.remove', 

                             'task.budget', 'task.percentageComplete', 

                             'task.priority', 

                             class_.hourlyFeeChangedEventType(), 

                             'task.fixedFee', 

                             'task.reminder', 'task.recurrence', 

                             'task.prerequisites', 'task.dependencies', 

                             'task.setting.shouldMarkCompletedWhenAllChildrenCompleted']