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381 lines
13 KiB
381 lines
13 KiB
/*
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* This file only:
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* Copyright (C) 2003 Mark Bucciarelli <mark@hubcapconsutling.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the
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* Free Software Foundation, Inc.
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* 51 Franklin Street, Fifth Floor
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef KARM_STORAGE_H
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#define KARM_STORAGE_H
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#include <tqdict.h>
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#include <tqptrstack.h>
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#include "journal.h"
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#include "reportcriteria.h"
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#include "desktoplist.h"
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#include <calendarresources.h>
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#include <vector>
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#include "resourcecalendar.h"
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#include <tdepimmacros.h>
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class TQDateTime;
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class Preferences;
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class Task;
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class TaskView;
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class HistoryEvent;
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/**
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* Singleton to store/retrieve KArm data to/from persistent storage.
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*
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* The storage is an iCalendar file. Also included are methods to
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* import KArm data from the two legacy file formats.
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*
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* All logic that deals with getting and saving data should go here. The
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* storage logic has changed at least twice already in KArm's history, and
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* chances are good it will change again (for example, allowing KOrganizer and
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* KArm to access the same iCalendar file simultaneously).
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*
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* Prior to KDE 3.2, KArm just stored totals for each task--a session total
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* and a task total. The session total was reset to zero each time KArm
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* started up or after the user reset the session times to zero. With the
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* release of KDE 3.2, KArm now stores these task totals as well as logging
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* the history of each start/stop event; that is, every time you start a timer
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* and then stop a timer on a task, KArm records this as an iCalendar event.
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*
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* @short Logic that gets and stores KArm data to disk.
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* @author Mark Bucciarelli <mark@hubcapconsulting.com>
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*/
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class KarmStorage
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{
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public:
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/*
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* Return reference to storage singleton.
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*
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* The constructors are private, so this must be used to create a
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* KarmStorage instance.
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*/
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static KarmStorage *instance();
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/*
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* Load the list view with tasks read from iCalendar file.
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*
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* Parses iCalendar file, builds list view items in the proper
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* hierarchy, and loads them into the list view widget.
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*
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* If the file name passed in is the same as the last file name that was
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* loaded, this method does nothing.
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*
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* This method considers any of the following conditions errors:
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*
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* @li the iCalendar file does not exist
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* @li the iCalendar file is not readable
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* @li the list group currently has list items
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* @li an iCalendar todo has no related to attribute
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* @li a todo is related to another todo which does not exist
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*
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* @param taskview The list group used in the TaskView
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* @param preferences The current KArm preferences.
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* @param fileName Override preferences' filename
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*
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* @return empty string if success, error message if error.
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*
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*/
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TQString load(TaskView* taskview, const Preferences* preferences, TQString fileName="" );
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/*
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* Return the name of the iCal file
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*/
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TQString icalfile();
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/*
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* Build up the taskview.
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*
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* This is needed if the iCal file has been modified
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*/
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TQString buildTaskView(KCal::ResourceCalendar *rc, TaskView *view);
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/* Close calendar and clear view. Release lock if holding one. */
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void closeStorage(TaskView* view);
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/*
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* Save all tasks and their totals to an iCalendar file.
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*
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* All tasks must have an associated VTODO object already created in the
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* calendar file; that is, the task->uid() must refer to a valid VTODO in
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* the calender.
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* Delivers empty string if successful, else error msg.
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*
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* @param taskview The list group used in the TaskView
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*/
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TQString save(TaskView* taskview);
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/**
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* Read tasks and their total times from a text file (legacy storage).
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*
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* This reads from one of the two legacy file formats. In this version,
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* the parent task times do not include the sum of all their children's
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* times.
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*
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* The format of the file is zero or more lines of:
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* 1 task id (a number)
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* time in minutes
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* string task name
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* [string] desktops, in which to count. e.g. "1,2,5" (optional)
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*/
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TQString loadFromFlatFile(TaskView* taskview, const TQString& filename);
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/**
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* Reads tasks and their total times from text file (legacy).
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*
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* This is the older legacy format, where the task totals included the
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* children totals.
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*
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* @see loadFromFlatFile
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*/
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TQString loadFromFlatFileCumulative(TaskView* taskview,
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const TQString& filename);
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/**
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Output a report based on contents of ReportCriteria.
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*/
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TQString report( TaskView *taskview, const ReportCriteria &rc );
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/**
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* Log the change in a task's time.
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*
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* We create an iCalendar event to store each change. The event start
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* date is set to the current datetime. If time is added to the task, the
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* task end date is set to start time + delta. If the time is negative,
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* the end date is set to the start time.
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*
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* In both cases (postive or negative delta), we create a custom iCalendar
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* property that stores the delta (in seconds). This property is called
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* X-TDE-karm-duration.
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*
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* Note that the KArm UI allows the user to change both the session and
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* the total task time, and this routine does not account for all posibile
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* cases. For example, it is possible for the user to do something crazy
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* like add 10 minutes to the session time and subtract 50 minutes from
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* the total time. Although this change violates a basic law of physics,
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* it is allowed.
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*
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* For now, you should pass in the change to the total task time.
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* Eventually, the UI should be changed.
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*
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* @param task The task the change is for.
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* @param delta Change in task time, in seconds. Can be negative.
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*/
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void changeTime(const Task* task, const long deltaSeconds);
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/**
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* Book time to a task.
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*
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* Creates an iCalendar event and adds it to the calendar. Does not write
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* calender to disk, just adds event to calendar in memory. However, the
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* resource framework does try to get a lock on the file. After a
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* succesful lock, the calendar marks this incidence as modified and then
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* releases the lock.
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*
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* @param task Task
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* @param startDateTime Date and time the booking starts.
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* @param durationInSeconds Duration of time to book, in seconds.
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*
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* @return true if event was added, false if not (if, for example, the
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* attempted file lock failed).
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*/
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bool bookTime(const Task* task, const TQDateTime& startDateTime,
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long durationInSeconds);
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/**
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* Log a change to a task name.
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*
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* For iCalendar storage, there is no need to log an Event for this event,
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* since unique id's are used to link Events to Todos. No matter how many
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* times you change a task's name, the uid stays the same.
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*
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* @param task The task
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* @param oldname The old name of the task. The new name is in the task
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* object already.
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*/
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void setName(const Task* task, const TQString& oldname) { Q_UNUSED(task); Q_UNUSED(oldname); }
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/**
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* Log the event that a timer has started for a task.
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*
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* For the iCalendar storage, there is no need to log anything for this
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* event. We log an event when the timer is stopped.
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*
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* @param task The task the timer was started for.
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*/
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void startTimer(const Task* task) { Q_UNUSED(task); }
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/**
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* Log the event that the timer has stopped for this task.
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*
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* The task stores the last time a timer was started, so we log a new iCal
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* Event with the start and end times for this task.
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* @see KarmStorage::changeTime
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*
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* @param task The task the timer was stopped for.
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*/
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void stopTimer(const Task* task, TQDateTime when=TQDateTime::currentDateTime());
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/**
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* Log a new comment for this task.
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*
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* iCal allows multiple comment tags. So we just add a new comment to the
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* todo for this task and write the calendar.
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*
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* @param task The task that gets the comment
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* @param comment The comment
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*/
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void addComment(const Task* task, const TQString& comment);
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/**
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* Remove this task from iCalendar file.
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*
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* Removes task as well as all event history for this task.
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*
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* @param task The task to be removed.
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* @return true if change was saved, false otherwise
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*/
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bool removeTask(Task* task);
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/**
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* Add this task from iCalendar file.
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*
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* Create a new KCal::Todo object and load with task information. If
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* parent is not zero, then set the RELATED-TO attribute for this Todo.
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*
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* @param task The task to be removed.
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* @param parent The parent of this task. Must have a uid() that is in
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* the existing calendar. If zero, this task is considered a root task.
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* @return The unique ID for the new VTODO. Return an null TQString if
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* there was an error creating the new calendar object.
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*/
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TQString addTask(const Task* task, const Task* parent);
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/**
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* Check if the iCalendar file currently loaded has any Todos in it.
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*
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* @return true if iCalendar file has any todos
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*/
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bool isEmpty();
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/**
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* Check if iCalendar file name in the preferences has changed since the
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* last call to load. If there is no calendar file currently loaded,
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* return false.
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*
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* @param preferences Set of KArm preferences.
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*
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* @return true if a previous file has been loaded and the iCalendar file
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* specified in the preferences is different.
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*/
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bool isNewStorage(const Preferences* preferences) const;
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/** Return a list of start/stop events for the given date range. */
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TQValueList<HistoryEvent> getHistory(const TQDate& from, const TQDate& to);
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private:
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static KarmStorage *_instance;
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KCal::ResourceCalendar *_calendar;
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TQString _icalfile;
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KarmStorage();
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void adjustFromLegacyFileFormat(Task* task);
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bool parseLine(TQString line, long *time, TQString *name, int *level,
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DesktopList* desktopList);
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TQString writeTaskAsTodo
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(Task* task, const int level, TQPtrStack< KCal::Todo >& parents);
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bool saveCalendar();
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KCal::Event* baseEvent(const Task*);
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bool remoteResource( const TQString& file ) const;
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/**
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* Writes all tasks and their totals to a Comma-Separated Values file.
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*
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* The format of this file is zero or more lines of:
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* taskName,subtaskName,..,sessionTime,time,totalSessionTime,totalTime
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* the number of subtasks is determined at runtime.
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*/
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TQString exportcsvFile( TaskView *taskview, const ReportCriteria &rc );
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/**
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* Write task history to file as comma-delimited data.
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*/
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TQString exportcsvHistory (
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TaskView* taskview,
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const TQDate& from,
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const TQDate& to,
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const ReportCriteria &rc
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);
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long printTaskHistory (
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const Task *task,
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const TQMap<TQString,long>& taskdaytotals,
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TQMap<TQString,long>& daytotals,
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const TQDate& from,
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const TQDate& to,
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const int level,
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std::vector <TQString> &matrix,
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const ReportCriteria &rc
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);
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};
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/**
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* One start/stop event that has been logged.
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*
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* When a task is running and the user stops it, KArm logs this event and
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* saves it in the history. This class represents such an event read from
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* storage, and abstracts it from the specific storage used.
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*/
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class HistoryEvent
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{
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public:
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/** Needed to be used in a value list. */
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HistoryEvent() {}
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HistoryEvent(TQString uid, TQString name, long duration,
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TQDateTime start, TQDateTime stop, TQString todoUid);
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TQString uid() {return _uid; }
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TQString name() {return _name; }
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/** In seconds. */
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long duration() {return _duration; }
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TQDateTime start() {return _start; }
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TQDateTime stop() { return _stop; }
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TQString todoUid() {return _todoUid; }
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private:
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TQString _uid;
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TQString _todoUid;
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TQString _name;
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long _duration;
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TQDateTime _start;
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TQDateTime _stop;
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};
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#endif // KARM_STORAGE_H
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