monthpage.cpp Example File

 /****************************************************************************
 **
 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** This file is part of the examples of the Qt Mobility Components.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** You may use this file under the terms of the BSD license as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
 **   * Redistributions in binary form must reproduce the above copyright
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
 **     the names of its contributors may be used to endorse or promote
 **     products derived from this software without specific prior written
 **     permission.
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include <QtGui>
 #include <qtorganizer.h>
 #include <qorganizerabstractrequest.h>

 #include "monthpage.h"
 #include "calendardemo.h"

 QTM_USE_NAMESPACE

 Q_DECLARE_METATYPE(QOrganizerItem)

 MonthPage::MonthPage(QWidget *parent)
     :QWidget(parent),
     m_manager(0),
     m_calendarWidget(0),
     m_dateLabel(0),
     m_itemList(0),
     m_ignoreShowDayPageOnceFlag(false)
 {
     // Create widgets
     QFormLayout *mainlayout = new QFormLayout(this);

     m_managerComboBox = new QComboBox(this);
     foreach (const QString& manager, QOrganizerManager::availableManagers()) {
         if (manager != "invalid" && manager != "skeleton")
             m_managerComboBox->addItem(manager);
     }
     mainlayout->addRow("Backend:", m_managerComboBox);
     connect(m_managerComboBox, SIGNAL(currentIndexChanged(const QString &)), this, SLOT(backendChanged(const QString &)));

     m_dateLabel = new QLabel(this);
     m_dateLabel->setAlignment(Qt::AlignCenter);
     mainlayout->addRow(m_dateLabel);

     m_calendarWidget = new QCalendarWidget(this);
     m_calendarWidget->setGridVisible(true);
     m_calendarWidget->setHorizontalHeaderFormat(QCalendarWidget::SingleLetterDayNames);
     m_calendarWidget->setHeaderVisible(false);
     mainlayout->addRow(m_calendarWidget);
     connect(m_calendarWidget, SIGNAL(selectionChanged()), this, SLOT(refreshDayItems()));
     connect(m_calendarWidget, SIGNAL(currentPageChanged(int, int)), this, SLOT(currentMonthChanged()));
     connect(m_calendarWidget, SIGNAL(activated(QDate)), this, SLOT(dayDoubleClicked(QDate)));

     m_itemList = new QListWidget(this);
     m_itemList->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
     m_itemList->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
     m_itemList->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
     m_itemList->setFocusPolicy(Qt::NoFocus);
 #if defined(Q_WS_MAEMO_5) || defined(Q_WS_MAEMO_6)
     m_itemList->setVisible(false);
 #else
     mainlayout->addRow(m_itemList);
 #endif
     connect(m_itemList, SIGNAL(itemDoubleClicked(QListWidgetItem*)), this, SLOT(itemDoubleClicked(QListWidgetItem*)));

     setLayout(mainlayout);
 }

 // This is separate from the constructor so we can do it after connecting the signals
 void MonthPage::init()
 {
     backendChanged(m_managerComboBox->currentText());
     currentMonthChanged();
 }

 MonthPage::~MonthPage()
 {

 }

 #if defined(Q_OS_SYMBIAN) || defined(Q_WS_SIMULATOR)
 void MonthPage::setMenu(QMenu *menu)
 {
     // Add softkey for symbian
     QAction* optionsSoftKey = new QAction("Options", this);
     optionsSoftKey->setSoftKeyRole(QAction::PositiveSoftKey);
     optionsSoftKey->setMenu(menu);
     addAction(optionsSoftKey);
 }
 #endif

 void MonthPage::backendChanged(const QString &managerName)
 {
     // Nothing to change
     if (m_manager && m_manager->managerName() == managerName)
         return;

     // Try creating a new manager
     QMap<QString, QString> parameters;
     QOrganizerManager* newManager = new QOrganizerManager(managerName, parameters, this);
     if (!newManager || newManager->error()) {
         QMessageBox::information(this, tr("Failed!"), QString("Failed to create manager"));
         delete newManager;
         m_managerComboBox->setCurrentIndex(m_managerComboBox->findText(m_manager->managerName()));
     } else {
         // Success: Replace the old one
         delete m_manager;
         m_manager = newManager;
         emit managerChanged(m_manager);
         refresh();
     }
 }

 void MonthPage::editItem()
 {
     QListWidgetItem *listItem = m_itemList->currentItem();
     if (!listItem)
         return;

     QOrganizerItem organizerItem = listItem->data(ORGANIZER_ITEM_ROLE).value<QOrganizerItem>();
     if (!organizerItem.isEmpty())
         emit showEditPage(organizerItem);
 }

 void MonthPage::removeItem()
 {
     QListWidgetItem *listItem = m_itemList->currentItem();
     if (!listItem)
         return;

     QOrganizerItem organizerItem = listItem->data(ORGANIZER_ITEM_ROLE).value<QOrganizerItem>();
     if (organizerItem.isEmpty())
         return;

     m_manager->removeItem(organizerItem.id());
     refresh();
 }

 void MonthPage::refresh()
 {
     // fetch all current months items
     QDate start(m_calendarWidget->yearShown(), m_calendarWidget->monthShown(), 1);
     QDate end = start.addDays(start.daysInMonth());
     QDateTime startDateTime(start, QTime(0, 0, 0, 0));
     QDateTime endDateTime(end, QTime(23, 59, 59, 0));
     // Remove all previous formatting
     for (int i=0; i<start.daysInMonth(); i++) {
         QTextCharFormat cf = m_calendarWidget->dateTextFormat(start.addDays(i));
         cf.setFontItalic(false);
         cf.setFontUnderline(false);
         cf.clearBackground();
         m_calendarWidget->setDateTextFormat(start.addDays(i), cf);
     }

     // Underline current date
     QTextCharFormat cf = m_calendarWidget->dateTextFormat(QDate::currentDate());
     cf.setFontUnderline(true);
     m_calendarWidget->setDateTextFormat(QDate::currentDate(), cf);

     // TODO: switch to item instances when theres a backed
     QList<QOrganizerItem> items = m_manager->items(startDateTime, endDateTime);

     // Get dates for all items
     QList<QDate> dates;
     foreach (const QOrganizerItem &item, items)
     {
         QDate startDate;
         QDate endDate;

         QOrganizerEventTime eventTime = item.detail<QOrganizerEventTime>();
         if (!eventTime.isEmpty()) {
             startDate = eventTime.startDateTime().date();
             endDate = eventTime.endDateTime().date();
         } else {
             QOrganizerTodoTime todoTime = item.detail<QOrganizerTodoTime>();
             if (!todoTime.isEmpty()) {
                 startDate = todoTime.startDateTime().date();
                 endDate = todoTime.dueDateTime().date();
             } else {
                 QOrganizerJournalTime journalTime = item.detail<QOrganizerJournalTime>();
                 if (!journalTime.isEmpty())
                     startDate = endDate = journalTime.entryDateTime().date();
             }
         }

         if (!startDate.isNull()) {
             while (startDate <= endDate) {
                 dates << startDate;
                 startDate = startDate.addDays(1);
             }
         }
     }

     // Mark all dates which has events.
     QBrush brush;
     brush.setColor(Qt::green);
     foreach (QDate date, dates) {
         if (date == QDate())
             continue;
         QTextCharFormat cf = m_calendarWidget->dateTextFormat(date);
         cf.setFontItalic(true); // TODO: find a better way to mark dates
         cf.setBackground(brush);
         m_calendarWidget->setDateTextFormat(date, cf);
     }

 #if !defined(Q_WS_MAEMO_5) && !defined(Q_WS_MAEMO_6)
     // As the day item list is not showed do not refresh
     // the day items in Maemo5 or Maemo6 to improve performance
     refreshDayItems();
 #else
     // We still need to emit this
     emit currentDayChanged(m_calendarWidget->selectedDate());
 #endif
 }

 void MonthPage::refreshDayItems()
 {
     QDate selectedDate = m_calendarWidget->selectedDate();
     emit currentDayChanged(selectedDate);

     QDateTime startOfDay(selectedDate, QTime(0, 0, 0));
     QDateTime endOfDay(selectedDate, QTime(23, 59, 59));
     // Clear items shown
     m_itemList->clear();

     // Find all items for today
     QList<QOrganizerItem> items = m_manager->items(startOfDay, endOfDay);

     foreach (const QOrganizerItem &item, items)
     {
         QOrganizerEventTime eventTime = item.detail<QOrganizerEventTime>();
         if (!eventTime.isEmpty()) {
             QString time = eventTime.startDateTime().time().toString("hh:mm");
             QListWidgetItem* listItem = new QListWidgetItem();
             listItem->setText(QString("Event:%1-%2").arg(time).arg(item.displayLabel()));
             QVariant data = QVariant::fromValue<QOrganizerItem>(item);
             listItem->setData(ORGANIZER_ITEM_ROLE, data);
             m_itemList->addItem(listItem);
         }

         QOrganizerTodoTime todoTime = item.detail<QOrganizerTodoTime>();
         if (!todoTime.isEmpty()) {
             QString time = todoTime.startDateTime().time().toString("hh:mm");
             QListWidgetItem* listItem = new QListWidgetItem();
             listItem->setText(QString("Todo:%1-%2").arg(time).arg(item.displayLabel()));
             QVariant data = QVariant::fromValue<QOrganizerItem>(item);
             listItem->setData(ORGANIZER_ITEM_ROLE, data);
             m_itemList->addItem(listItem);
         }

         QOrganizerJournalTime journalTime = item.detail<QOrganizerJournalTime>();
         if (!journalTime.isEmpty()) {
             QString time = journalTime.entryDateTime().time().toString("hh:mm");
             QListWidgetItem* listItem = new QListWidgetItem();
             listItem->setText(QString("Journal:%1-%2").arg(time).arg(item.displayLabel()));
             QVariant data = QVariant::fromValue<QOrganizerItem>(item);
             listItem->setData(ORGANIZER_ITEM_ROLE, data);
             m_itemList->addItem(listItem);
         }

         // TODO: other item types
         // TODO: icons for event/todo/journal would be nice
     }
     if (m_itemList->count() == 0)
         m_itemList->addItem("(no entries)");
 }

 void MonthPage::currentMonthChanged()
 {
     int month = m_calendarWidget->monthShown();
     int year = m_calendarWidget->yearShown();
     m_dateLabel->setText(QString("%1 %2").arg(QDate::longMonthName(month)).arg(year));
     refresh();
     m_ignoreShowDayPageOnceFlag = true;
 }

 void MonthPage::dayDoubleClicked(QDate date)
 {
     if (!m_ignoreShowDayPageOnceFlag)
         emit showDayPage(date);
     else
         m_ignoreShowDayPageOnceFlag = false;
 }

 void MonthPage::openDay()
 {
     emit showDayPage(m_calendarWidget->selectedDate());
 }

 void MonthPage::itemDoubleClicked(QListWidgetItem *listItem)
 {
     if (!listItem)
         return;

     QOrganizerItem organizerItem = listItem->data(ORGANIZER_ITEM_ROLE).value<QOrganizerItem>();
     if (!organizerItem.isEmpty())
         emit showEditPage(organizerItem);
 }

 void MonthPage::showEvent(QShowEvent *event)
 {
     window()->setWindowTitle("Calendar Demo");
     QWidget::showEvent(event);
 }