/*
                             This file is part of the Opie Project

                             Copyright (C) Opie Team <opie-devel@handhelds.org>
              =.
            .=l.
           .>+-=
 _;:,     .>    :=|.         This program is free software; you can
.> <`_,   >  .   <=          redistribute it and/or  modify it under
:`=1 )Y*s>-.--   :           the terms of the GNU Library General Public
.="- .-=="i,     .._         License as published by the Free Software
 - .   .-<_>     .<>         Foundation; either version 2 of the License,
     ._= =}       :          or (at your option) any later version.
    .%`+i>       _;_.
    .i_,=:_.      -<s.       This program 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
..}^=.=       =       ;      Library General Public License for more
++=   -.     .`     .:       details.
:     =  ...= . :.=-
 -.   .:....=;==+<;          You should have received a copy of the GNU
  -_. . .   )=.  =           Library General Public License along with
    --        :-=`           this library; see the file COPYING.LIB.
                             If not, write to the Free Software Foundation,
                             Inc., 59 Temple Place - Suite 330,
                             Boston, MA 02111-1307, USA.
*/

#include <unistd.h>

#include <opie2/odebug.h>
#include <opie2/opimrecurrence.h>
#include <opie2/opimnotifymanager.h>
#include <opie2/otodoaccessvcal.h>
#include <opie2/oapplicationfactory.h>

#include <qpe/applnk.h>
#include <qpe/config.h>
#include <qpe/ir.h>
#include <qpe/qpemessagebox.h>
#include <qpe/alarmserver.h>
#include <qpe/qpeapplication.h>

#include <qaction.h>
#include <qlayout.h>
#include <qmenubar.h>
#include <qmessagebox.h>
#include <qpushbutton.h>
#include <qstringlist.h>
#include <qtimer.h>
#include <qwhatsthis.h>

#include "quickeditimpl.h"
#include "todotemplatemanager.h"
#include "templatedialogimpl.h"
#include "tableview.h"

#include "textviewshow.h"
#include "todoeditor.h"
#include "newtaskdlg.h"
#include "mainwindow.h"

using Opie::Core::OApplicationFactory;
OPIE_EXPORT_APP( OApplicationFactory<Todo::MainWindow> )

using namespace Opie;
using namespace Todo;

MainWindow::MainWindow( QWidget* parent,
                        const char* name, WFlags )
    : Opie::OPimMainWindow( "Todolist", "Todo List", tr( "Task" ), "todo",
                            parent, name, WType_TopLevel | WStyle_ContextHelp )
{
    setCaption( tr( "Todo List" ) );
    if (!name)
        setName("todo window");

    m_syncing = false;
    m_showing = false;
    m_counter = 0;
    m_tempManager = new TemplateManager();
    m_tempManager->load();

    initConfig();
    initUI();
    initViews();
    initActions();
    initEditor();
    initShow();

    raiseCurrentView();
    QTimer::singleShot( 0, this, SLOT(initStuff()) );
}
void MainWindow::initStuff() {
    m_todoMgr.load();
    setViewCategory( m_curCat );
    setCategory( m_curCat );
}
void MainWindow::initActions() {
    // Insert Task menu items
    QActionGroup *items = new QActionGroup( this, QString::null, false );

    m_deleteCompleteAction = new QAction( QString::null, QWidget::tr( "Delete completed" ),
                                          0, items, 0 );
    connect( m_deleteCompleteAction, SIGNAL(activated()), this, SLOT(slotDeleteCompleted()) );

    insertItemMenuItems( items );

    // Insert View menu items
    items = new QActionGroup( this, QString::null, false );

    m_completedAction = new QAction( QString::null, QWidget::tr("Show completed tasks"),
                                     0, items, 0, true );
    m_completedAction->setOn( showCompleted() );
    connect( m_completedAction, SIGNAL(toggled(bool)), this, SLOT(slotShowCompleted(bool)) );

    QAction *a = new QAction( QString::null, QWidget::tr("Show only over-due tasks"),
                              0, items, 0, true );
    a->setOn( showOverDue() );
    connect( a, SIGNAL(toggled(bool)), this, SLOT(slotShowDue(bool)) );

    m_showDeadLineAction = new QAction( QString::null, QWidget::tr("Show task deadlines"),
                                        0, items, 0, true );
    m_showDeadLineAction->setOn( showDeadline() );
    connect( m_showDeadLineAction, SIGNAL(toggled(bool)), this, SLOT(slotShowDeadLine(bool)) );

    m_showQuickTaskAction = new QAction( QString::null, QWidget::tr("Show quick task bar"),
                                         0, items, 0, true );
    m_showQuickTaskAction->setOn( showQuickTask() );
    connect( m_showQuickTaskAction, SIGNAL(toggled(bool)), this, SLOT(slotShowQuickTask(bool)) );

    insertViewMenuItems( items );
}
/* m_curCat from Config */
void MainWindow::initConfig() {
    Config config( "todo" );
    config.setGroup( "View" );
    m_completed =  config.readBoolEntry( "ShowComplete", true );
    m_curCat = config.readEntry( "Category", QString::null );
    m_deadline =  config.readBoolEntry( "ShowDeadLine", true);
    m_overdue = config.readBoolEntry("ShowOverDue", false );
    m_quicktask = config.readBoolEntry("ShowQuickTask", true);
}
void MainWindow::initUI() {
    // Create main widget stack
    m_stack = new Opie::Ui::OWidgetStack(this,  "main stack");
    setCentralWidget( m_stack );
    connect( this, SIGNAL(categorySelected(const QString&)),
            this, SLOT(setCategory(const QString&)) );

    // Create quick task toolbar
    m_curQuick = new QuickEditImpl( this, m_quicktask );
    addToolBar( (QToolBar *)m_curQuick->widget(), QWidget::tr( "QuickEdit" ),
                QMainWindow::Top, true );
    m_curQuick->signal()->connect( this, SLOT(slotQuickEntered()) );
}
void MainWindow::initViews() {

    TableView* tableView = new TableView( this, m_stack );
    QWhatsThis::add( tableView, QWidget::tr( "This is a listing of all current tasks.\n\nThe list displays the following information:\n1. Completed - A green checkmark indicates task is completed.  Click here to complete a task.\n2. Priority - a graphical representation of task priority.  Double-click here to modify.\n3. Description - description of task.  Click here to select the task.\n4. Deadline - shows when task is due.  This column can be shown or hidden by selecting Options->'Show task deadlines' from the menu above." ) );
    m_stack->addWidget( tableView,  m_counter++ );
    m_views.append( tableView );
    m_curView = tableView;
    connectBase( tableView );
    /* add QString type + QString configname to
     * the View menu
     * and subdirs for multiple views
     */
}
void MainWindow::initEditor() {
    m_curEdit = new Editor();
}
void MainWindow::initShow() {
    m_curShow = new TextViewShow(this, this);
    m_stack->addWidget( m_curShow->widget() , m_counter++ );
}
MainWindow::~MainWindow() {
    delete templateManager();
}
void MainWindow::connectBase( ViewBase* ) {
    // once templates and signals mix we'll use it again
}
QPopupMenu* MainWindow::contextMenu( int , bool /*recur*/ ) {
    return itemContextMenu();
}
OPimTodoAccess::List MainWindow::list()const {
    return m_todoMgr.list();
}
OPimTodoAccess::List MainWindow::sorted( bool asc, int sortOrder ) {
    int cat = 0;
    if ( m_curCat != tr( "All" ) )
        cat = currentCatId();
    if ( m_curCat == tr( "Unfiled" ) )
        cat = -1;

    int filter = OPimTodoAccess::FilterCategory;

    if (!m_completed )
        filter |= OPimTodoAccess::DoNotShowCompleted;
    if (m_overdue)
        filter |= OPimTodoAccess::OnlyOverDue;

    return m_todoMgr.sorted( asc, sortOrder, filter, cat );
}
OPimTodoAccess::List MainWindow::sorted( bool asc, int sortOrder, int addFilter) {
    int cat = 0;
    if ( m_curCat != tr( "All" ) )
        cat = currentCatId();

    if ( m_curCat == tr( "Unfiled" ) )
        cat = -1;

    return m_todoMgr.sorted(asc, sortOrder, addFilter,  cat );
}
OPimTodo MainWindow::event( int uid ) {
    return m_todoMgr.event( uid );
}
bool MainWindow::isSyncing()const {
    return m_syncing;
}
TemplateManager* MainWindow::templateManager() {
    return m_tempManager;
}
Editor* MainWindow::currentEditor() {
    return m_curEdit;
}
TodoShow* MainWindow::currentShow() {
    return m_curShow;
}
void MainWindow::slotReload() {
    m_syncing = false;
    m_todoMgr.reload();
    currentView()->updateView( );
    raiseCurrentView();
}
void MainWindow::closeEvent( QCloseEvent* e ) {
    if (m_stack->visibleWidget() == currentShow()->widget() ) {
        m_showing = false;
        raiseCurrentView();
        e->ignore();
        return;
    }
    /*
     * we should have flushed and now we're still saving
     * so there is no need to flush
     */
    if (m_syncing ) {
        e->accept();
        return;
    }
    bool quit = false;
    if ( m_todoMgr.saveAll() ){
        quit = true;
    }else {
	if ( QMessageBox::critical( this, QWidget::tr("Out of space"),
				    QWidget::tr("Todo was unable\n"
				       "to save your changes.\n"
				       "Free up some space\n"
				       "and try again.\n"
				       "\nQuit Anyway?"),
				    QMessageBox::Yes|QMessageBox::Escape,
				    QMessageBox::No|QMessageBox::Default)
	     != QMessageBox::No ) {
	    e->accept();
            quit = true;
	}else
	    e->ignore();

    }

    if (quit ) {
        Config config( "todo" );
        config.setGroup( "View" );
        config.writeEntry( "ShowComplete", showCompleted() );
        config.writeEntry( "Category", currentCategory() );
        config.writeEntry( "ShowDeadLine", showDeadline());
        config.writeEntry( "ShowOverDue", showOverDue() );
        config.writeEntry( "ShowQuickTask", showQuickTask() );
        /* save templates */
        templateManager()->save();
        e->accept();
        QTimer::singleShot(0, qApp, SLOT(closeAllWindows()) );
    }
}
void MainWindow::slotItemNew() {
	QStringList templateList = templateManager()->templates();
	if(templateList.isEmpty()) {
		// No templates, just create a blank task
		create();
	}
	else {
		// There are templates, so allow the user to select one
		NewTaskDlg dlg( templateList, this );
		if ( QPEApplication::execDialog( &dlg ) == QDialog::Accepted ) {
			QString tempName = dlg.tempSelected();
			if ( tempName.isNull() )
				// Create new, blank task
				create();
			else {
				// Create new task from the template selected
				OPimTodo event = templateManager()->templateEvent( tempName );
				event = currentEditor()->edit( this, event );
				if ( currentEditor()->accepted() ) {
					event.setUid( 1 );
					handleAlarms( OPimTodo(), event );
					m_todoMgr.add( event );
					currentView()->addEvent( event );

					reloadCategories();
				}
				raiseCurrentView();
			}
		}
	}
}
void MainWindow::slotItemEdit() {
    slotEdit( currentView()->current() );
}
void MainWindow::slotItemDuplicate() {
    if(m_syncing) {
        QMessageBox::warning(this, QWidget::tr("Todo"),
							 QWidget::tr("Data can not be edited, currently syncing"));
        return;
    }
    OPimTodo ev = m_todoMgr.event( currentView()->current() );
    /* let's generate a new uid */
    ev.setUid(1);
    m_todoMgr.add( ev );

    currentView()->addEvent( ev );
    raiseCurrentView();
}
void MainWindow::slotItemDelete() {
    if (!currentView()->current() )
        return;

    if(m_syncing) {
	QMessageBox::warning(this, QWidget::tr("Todo"),
							 QWidget::tr("Data can not be edited, currently syncing"));
	return;
    }
    QString strName = currentView()->currentRepresentation();
    if (!QPEMessageBox::confirmDelete(this, QWidget::tr("Todo"), strName ) )
        return;

    handleAlarms( m_todoMgr.event( currentView()->current() ), OPimTodo() );
    m_todoMgr.remove( currentView()->current() );
    currentView()->removeEvent( currentView()->current() );
    raiseCurrentView();
}

static const char *beamfile = "/tmp/opie-todo.vcs";
void MainWindow::slotItemBeam() {
    beam( currentView()->current() );
}
void MainWindow::slotItemFind() {
}
void MainWindow::slotConfigure() {
    TemplateDialogImpl dlg( this, m_tempManager );
    if ( QPEApplication::execDialog( &dlg ) != QDialog::Accepted )
        m_tempManager->load();
}
void MainWindow::slotDelete(int uid ) {
    if( uid == 0 ) return;
    if(m_syncing) {
	QMessageBox::warning(this, QWidget::tr("Todo"),
							 QWidget::tr("Data can not be edited, currently syncing"));
	return;
    }
    OPimTodo to = m_todoMgr.event(uid);
    if (!QPEMessageBox::confirmDelete(this, QWidget::tr("Todo"), to.toShortText() ) )
        return;

    handleAlarms(to, OPimTodo() );
    m_todoMgr.remove( to.uid() );
    currentView()->removeEvent( to.uid() );
    raiseCurrentView();
}
void MainWindow::slotDeleteAll() {
    if(m_syncing) {
        QMessageBox::warning(this, QWidget::tr("Todo"),
                             QWidget::tr("Data can not be edited, currently syncing"));
        return;
    }


    if ( !QPEMessageBox::confirmDelete( this, QWidget::tr( "Todo" ), QWidget::tr("all tasks?") ) )
        return;

    m_todoMgr.removeAll();
    currentView()->clear();

    raiseCurrentView();
}
void MainWindow::slotDeleteCompleted() {
    if(m_syncing) {
        QMessageBox::warning(this, QWidget::tr("Todo"),
                             QWidget::tr("Data can not be edited, currently syncing"));
        return;
    }

    if ( !QPEMessageBox::confirmDelete( this, QWidget::tr( "Todo" ), QWidget::tr("all completed tasks?") ) )
        return;


    m_todoMgr.removeCompleted();
    currentView()->updateView( );
}
/*
 * set the category
 */
void MainWindow::setCategory( const QString &category ) {
    m_curCat = category;
    if ( m_curCat == tr( "All" ) )
        m_curCat = QString::null;

    currentView()->setShowCategory( m_curCat );
    raiseCurrentView();
}
void MainWindow::slotShowDeadLine( bool dead) {
    m_deadline = dead;
    currentView()->setShowDeadline( dead );
}
void MainWindow::slotShowCompleted( bool show) {
    m_completed = show;
    currentView()->setShowCompleted( m_completed );
}
void MainWindow::slotShowQuickTask( bool show ) {
    m_quicktask = show;
    if ( m_quicktask )
        m_curQuick->widget()->show();
    else
        m_curQuick->widget()->hide();
}
bool MainWindow::showOverDue()const {
    return m_overdue;
}
void MainWindow::setDocument( const QString& fi) {
    DocLnk doc(fi);
    if (doc.isValid() )
        receiveFile(doc.file() );
    else
        receiveFile(fi );
}
void MainWindow::beamDone( Ir* ir) {
    delete ir;
    ::unlink( beamfile );
}
void MainWindow::receiveFile( const QString& filename ) {
    OPimTodoAccessVCal* cal = new OPimTodoAccessVCal(filename );

    OPimTodoAccess acc( cal );
    acc.load();
    OPimTodoAccess::List list = acc.allRecords();

    if (list.count()){

        QString message = QWidget::tr("<P>%1 new tasks arrived.<p>Would you like to add them to your Todolist?").arg(list.count() );

        if ( QMessageBox::information(this, QWidget::tr("New Tasks"),
                                      message, QMessageBox::Ok,
                                      QMessageBox::Cancel ) == QMessageBox::Ok ) {
            OPimTodoAccess::List::Iterator it;
            for ( it = list.begin(); it != list.end(); ++it )
                m_todoMgr.add( (*it) );

            currentView()->updateView();
        }
    }
}

void MainWindow::slotFlush() {
    m_syncing = true;
    m_todoMgr.save();
}
void MainWindow::slotShowDetails() {
    slotShow( currentView()->current() );
}
bool MainWindow::showCompleted()const {
    return m_completed;
}
bool MainWindow::showDeadline()const {
    return m_deadline;
}
bool MainWindow::showQuickTask()const {
    return m_quicktask;
}
QString MainWindow::currentCategory()const {
    return m_curCat;
}
int MainWindow::currentCatId() {
    return m_todoMgr.catId( m_curCat );
}
ViewBase* MainWindow::currentView() {
    return m_curView;
}
void MainWindow::raiseCurrentView() {
    // due QPE/Application/todolist show(int)
    // we might not have the populateCategories slot called once
    // we would show the otodo but then imediately switch to the currentView
    // if we're initially showing we shouldn't raise the table
    // in returnFromView we fix up m_showing
    if (m_showing ) return;

    m_stack->raiseWidget( m_curView->widget() );
}
void MainWindow::slotShowDue(bool ov) {
    m_overdue = ov;
    currentView()->showOverDue( ov );
    raiseCurrentView();
}
void MainWindow::slotShow( int uid ) {
    if ( uid == 0 ) return;


    currentShow()->slotShow( event( uid ) );
    m_stack->raiseWidget( currentShow()->widget() );
}
void MainWindow::slotShowNext() {
    int l = currentView()->next();
    if (l!=0)
        slotShow(l);
}
void MainWindow::slotShowPrev() {
    int l = currentView()->prev();
    if (l!=0)
        slotShow(l);
}
void MainWindow::slotEdit( int uid ) {
    if (uid == 0 ) return;
    if(m_syncing) {
	QMessageBox::warning(this, QWidget::tr("Todo"),
			     QWidget::tr("Data can't be edited, currently syncing"));
	return;
    }

    OPimTodo old_todo = m_todoMgr.event( uid );

    OPimTodo todo = currentEditor()->edit(this, old_todo );

    /* if completed */
    if ( currentEditor()->accepted() ) {
        handleAlarms( old_todo, todo );
        m_todoMgr.update( todo.uid(), todo );
	currentView()->replaceEvent( todo );
        /* a Category might have changed */
        reloadCategories();
    }

    raiseCurrentView();
}
/*
void MainWindow::slotUpdate1( int uid, const SmallTodo& ev) {
    m_todoMgr.update( uid, ev );
}
*/
void MainWindow::updateTodo(  const OPimTodo& ev) {
    m_todoMgr.update( ev.uid() , ev );
}
/* The view changed it's configuration
 * update the view menu
 */
void MainWindow::slotUpdate3( QWidget* ) {

}
void MainWindow::updateList() {
    m_todoMgr.updateList();
}
void MainWindow::setReadAhead( uint count ) {
    if (m_todoMgr.todoDB() )
        m_todoMgr.todoDB()->setReadAhead( count );
}
void MainWindow::slotQuickEntered() {
    OPimTodo todo = quickEditor()->todo();
    if (todo.isEmpty() )
        return;

    m_todoMgr.add( todo );
    currentView()->addEvent( todo );
    raiseCurrentView();
}
QuickEditBase* MainWindow::quickEditor() {
    return m_curQuick;
}
void MainWindow::slotComplete( int uid ) {
    slotComplete( event(uid) );
}
void MainWindow::slotComplete( const OPimTodo& todo ) {
    OPimTodo to = todo;
    to.setCompleted( !to.isCompleted() );
    to.setCompletedDate( QDate::currentDate() );

    /*
     * if the item does recur
     * we need to spin it off
     * and update the items duedate to the next
     * possible recurrance of this item...
     * the spinned off one will loose the
     * recurrence.
     * We calculate the difference between the old due date and the
     * new one and add this diff to start, completed and alarm dates
     * -zecke
     */
    if ( to.hasRecurrence() && to.isCompleted() ) {
        OPimTodo to2( to );

        /* the spinned off one won't recur anymore */
        to.setRecurrence( OPimRecurrence() );

        OPimRecurrence rec = to2.recurrence();
        rec.setStart( to.dueDate() );
        to2.setRecurrence( rec );
        /*
         * if there is a next occurence
         * from the duedate of the last recurrance
         */
        QDate date;
        if ( to2.recurrence().nextOcurrence( to2.dueDate().addDays(1), date ) ) {
            int dayDiff = to.dueDate().daysTo( date );
            QDate inval;
            /* generate a new uid for the old record */
            to.setUid( 1 );

            /* add the old one cause it has a new UID here cause it was spin off */
            m_todoMgr.add( to );

            /*
             * update the due date
             * start date
             * and complete date
             */
            to2.setDueDate( date );
            rec.setStart( date );
            to2.setRecurrence( rec );  // could be Monday, TuesDay, Thursday every week

            /* move start date */
            if (to2.hasStartDate() )
                to2.setStartDate( to2.startDate().addDays( dayDiff ) );

            /* now the alarms */
            if (to2.hasNotifiers() ) {
                OPimNotifyManager::Alarms _als = to2.notifiers().alarms();
                OPimNotifyManager::Alarms als;

                /* for every alarm move the day */
                for ( OPimNotifyManager::Alarms::Iterator it = _als.begin(); it != _als.end(); ++it ) {
                    OPimAlarm al = (*it);
                    al.setDateTime( al.dateTime().addDays( dayDiff ) );
                    als.append( al );
                }
                to2.notifiers().setAlarms( als );
                handleAlarms( OPimTodo(), todo );
            }
            to2.setCompletedDate( inval );
            to2.setCompleted( false );

            updateTodo( to2 );
        }else
            updateTodo( to );
    }else
        updateTodo( to );

    currentView()->updateView();
    raiseCurrentView();
}
void MainWindow::flush() {
    slotFlush();
}
void MainWindow::reload() {
    slotReload();
}
int MainWindow::create() {
    int uid = 0;
    if(m_syncing) {
	QMessageBox::warning(this, QWidget::tr("Todo"),
			     QWidget::tr("Data can not be edited, currently syncing"));
	return uid;
    }
    m_todoMgr.load();


    OPimTodo todo = currentEditor()->newTodo( currentCatId(),
                                           this );

    if ( currentEditor()->accepted() ) {
	//todo.assignUid();
        uid = todo.uid();
        handleAlarms( OPimTodo(), todo );
        m_todoMgr.add( todo );
        currentView()->addEvent( todo );


        // I'm afraid we must call this every time now, otherwise
        // spend expensive time comparing all these strings...
        // but only call if we changed something -zecke
        reloadCategories();
    }
    raiseCurrentView( );

    return uid;
}
/* delete it silently... */
bool MainWindow::remove( int uid ) {
    if (m_syncing) return false;

    /* argh need to get the whole OEvent... to disable alarms -zecke */
    handleAlarms( OPimTodo(), m_todoMgr.event( uid ) );

    return m_todoMgr.remove( uid );
}
void MainWindow::beam( int uid) {
    if( uid == 0 ) return;

    ::unlink( beamfile );
    m_todoMgr.load();

    OPimTodo todo = event( uid );
    OPimTodoAccessVCal* cal = new OPimTodoAccessVCal(QString::fromLatin1(beamfile) );
    OPimTodoAccess acc( cal );
    acc.load();
    acc.add( todo );
    acc.save();
    Ir* ir = new Ir(this );
    connect(ir, SIGNAL(done(Ir*) ),
            this, SLOT(beamDone(Ir*) ) );
    ir->send(beamfile, todo.summary(), "text/x-vCalendar" );
}
void MainWindow::show( int uid ) {
    m_todoMgr.load(); // might not be loaded yet
    m_showing = true;
    slotShow( uid );
    raise();
    QPEApplication::setKeepRunning();
}
void MainWindow::edit( int uid ) {
    m_todoMgr.load();
    slotEdit( uid );
}
void MainWindow::add( const OPimRecord& rec) {
    OPimTodo test;
    if ( rec.rtti() != test.rtti() ) return;
    m_todoMgr.load(); // might not be loaded

    const OPimTodo& todo = static_cast<const OPimTodo&>(rec);

    m_todoMgr.add(todo );
    currentView()->addEvent( todo );


    // I'm afraid we must call this every time now, otherwise
    // spend expensive time comparing all these strings...
    // but only call if we changed something -zecke
    reloadCategories();
}
void MainWindow::slotReturnFromView() {
    m_showing = false;
    raiseCurrentView();
}

namespace {
    OPimNotifyManager::Alarms findNonMatching( const OPimNotifyManager::Alarms& oldAls,
                                               const OPimNotifyManager::Alarms& newAls ) {
        OPimNotifyManager::Alarms nonMatching;
        OPimNotifyManager::Alarms::ConstIterator oldIt = oldAls.begin();
        OPimNotifyManager::Alarms::ConstIterator newIt;
        for ( ; oldIt != oldAls.end(); ++oldIt ) {
            bool found = false;
            QDateTime oldDt = (*oldIt).dateTime();
            for (newIt= newAls.begin(); newIt != newAls.end(); ++newIt ) {
                if ( oldDt == (*newIt).dateTime() ) {
                    found = true;
                    break;
                    }
            }
            if (!found)
                nonMatching.append( (*oldIt) );
        }
        return nonMatching;
    }
    void addAlarms( const OPimNotifyManager::Alarms& als, int uid ) {
        OPimNotifyManager::Alarms::ConstIterator it;
        for ( it = als.begin(); it != als.end(); ++it ) {
            AlarmServer::addAlarm( (*it).dateTime(), "QPE/Application/todolist", "alarm(QDateTime,int)", uid );
        }

    }
    void removeAlarms( const OPimNotifyManager::Alarms& als, int uid ) {
        OPimNotifyManager::Alarms::ConstIterator it;
        for ( it = als.begin(); it != als.end(); ++it ) {
            AlarmServer::deleteAlarm( (*it).dateTime(), "QPE/Application/todolist", "alarm(QDateTime,int)", uid );
        }
    }
}

void MainWindow::handleAlarms( const OPimTodo& oldTodo, const OPimTodo& newTodo) {
    /*
     * if oldTodo is not empty and has notifiers we need to find the deleted ones
     */
    if(!oldTodo.isEmpty() && oldTodo.hasNotifiers() ) {
        OPimNotifyManager::Alarms removed;
        OPimNotifyManager::Alarms oldAls = oldTodo.notifiers().alarms();
        if (!newTodo.hasNotifiers() )
            removed = oldAls;
        else
            removed = findNonMatching( oldAls, newTodo.notifiers().alarms() );

        removeAlarms( removed, oldTodo.uid() );
    }
    if ( newTodo.hasNotifiers() ) {
        OPimNotifyManager::Alarms added;
        if ( oldTodo.isEmpty() || !oldTodo.hasNotifiers() )
            added = newTodo.notifiers().alarms();
        else
            added = findNonMatching( newTodo.notifiers().alarms(), oldTodo.notifiers().alarms() );

        addAlarms( added, newTodo.uid() );
    }
}
/* we might have not loaded the db */
void MainWindow::doAlarm( const QDateTime& dt, int uid ) {
    m_todoMgr.load();

    OPimTodo todo = m_todoMgr.event( uid );
    if (!todo.hasNotifiers() ) return;

    /*
     * let's find the right alarm and find out if silent
     * then show a richtext widget
     */
    bool loud = false;
    OPimNotifyManager::Alarms als = todo.notifiers().alarms();
    OPimNotifyManager::Alarms::Iterator it;
    for ( it = als.begin(); it != als.end(); ++it ) {
        if ( (*it).dateTime() == dt ) {
            loud = ( (*it).sound() == OPimAlarm::Loud );
            break;
        }
    }
    if (loud)
        startAlarm();

    QDialog dlg(this, 0, true );
    QVBoxLayout* lay = new QVBoxLayout( &dlg );
    QTextView* view = new QTextView( &dlg );
    lay->addWidget( view );
    QPushButton* btnOk = new QPushButton( tr("Ok"), &dlg );
    connect( btnOk, SIGNAL(clicked() ), &dlg, SLOT(accept() ) );
    lay->addWidget( btnOk );

    QString text = tr("<h1>Alarm at %1</h1><br>").arg( TimeString::dateString( dt ) );
    text += todo.toRichText();
    view->setText( text );

    bool needToStay = QPEApplication::execDialog( &dlg );

    if (loud)
        killAlarm();

    if (needToStay) {
//        showMaximized();
//        raise();
        QPEApplication::setKeepRunning();
//        setActiveWindow();
    }

}