/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

* Definition of CalenEditorReminderField class.

*

*/

// System Includes

#include <QDate>

#include <hbdataformmodelitem.h>

#include <hbdataformmodel.h>

#include <hbdataform.h>

#include <hbdatetimepicker.h>

#include <hbextendedlocale.h>

#include <hbi18ndef.h>

#include <hbdialog.h>

#include <hblabel.h>

#include <hbaction.h>

// User Includes

#include "caleneditorreminderfield.h"

#define numberOfMinutesInADay 1440

/*!

	\class CalenEditorReminderField

 */

/*!

	Constructor.

	\param parent QObject pointer

 */

CalenEditorReminderField::CalenEditorReminderField(

										CalenEditorPrivate* calenEditor,

										HbDataForm* form, 

										HbDataFormModel* model,

										QObject *parent)

	:QObject(parent),

	 mCalenEditor(calenEditor), 

	 mEditorForm(form), 

	 mCalenEditorModel(model),

	 mCustomReminderTimeItem(NULL),

	 mReminderTimeAdded(false)

{

	mReminderItem = new HbDataFormModelItem();

	mReminderItem->setType(HbDataFormModelItem::ComboBoxItem);

	mReminderItem->setData(HbDataFormModelItem::LabelRole,

	// Add it to the model

	mCalenEditorModel->appendDataFormItem(mReminderItem,

										mCalenEditorModel->invisibleRootItem());

}

/*!

	 Destructor

 */

CalenEditorReminderField::~CalenEditorReminderField()

{

	// Nothing Yet

}

/*!

	 Set the reminder choices.

 */

void CalenEditorReminderField::setReminderChoices()

{

	// Create the reminder choices

	QStringList reminderChoices;

	mReminderItem->setContentWidgetData(QString("items"), reminderChoices);

	// Build the hash map for the reminder.

	mReminderItem->setEnabled(true);

}

/*!

	 Adds reminder item to the model

 */

void CalenEditorReminderField::addItemToModel()

{	

	// Add reminder to the model

	mCalenEditorModel->appendDataFormItem( mReminderItem,

				   mCalenEditorModel->invisibleRootItem());

}

/*!

	 Removes reminder item from the model

 */

void CalenEditorReminderField::removeItemFromModel()

{

	mCalenEditorModel->removeItem(modelIndex());

}

/*!

	 Populates reminder item with available choices to the user

	 \param newEntry bool value to indicate if its a new entry

 */

void CalenEditorReminderField::populateReminderItem(bool newEntry)

{

	AgendaAlarm reminder;

	bool pastEvent =  false;

	// Set reference date to start date or repeat until date accordingly to 

	// decide whether its a past event or not.

	QDate referenceDate;

	if (!mCalenEditor->editedEntry()->isRepeating() || 

					(mCalenEditor->isEditRangeThisOnly())) {

		referenceDate = mCalenEditor->editedEntry()->startTime().date();

	} else {

		referenceDate = mCalenEditor->editedEntry()->repeatRule().until().date();

	}

	if ((referenceDate < QDate::currentDate()) || 

					(referenceDate == QDate::currentDate()

					&& (mCalenEditor->editedEntry()->startTime().time() < 

					QTime::currentTime()))) {

		pastEvent = true;

	}

	if (mCalenEditor->isAllDayEvent()) {

		updateReminderChoicesForAllDay(referenceDate);

	} else {

		setReminderChoices();

	}

	// Set the default reminder value to 15 minutes 

	if (newEntry) {

		if (!pastEvent) {

			// Save the reminder alarm for the entry

			reminder.setAlarmSoundName(QString(" "));

			// Set the reminder to the entry as well as original entry.

			mCalenEditor->editedEntry()->setAlarm(reminder);

			mCalenEditor->originalEntry()->setAlarm(reminder);

		} else {

			mReminderItem->setContentWidgetData("currentIndex", 0);

			mReminderItem->setEnabled(false);

		}

	} else {

		// If the alarm is not null,

		// Check if all day event or not and then set the choices accordingly.

		if (mCalenEditor->editedEntry()->alarm().isNull()) {

			// Alarm is set off

			mReminderItem->setContentWidgetData("currentIndex", 0);

			if(mReminderTimeAdded) {

				removeReminderTimeField();

			}

		} else if (mCalenEditor->editedEntry()->type()

		        != AgendaEntry::TypeEvent) {

			// Get the reminder offset value.

			int reminderOffset =

			        mCalenEditor->editedEntry()->alarm().timeOffset();

			// Get the index value for the reminder combo box from the hash 

			// table.

			int index = mReminderHash.key(reminderOffset);

			mReminderItem->setContentWidgetData("currentIndex", index);

		} else {

			// Insert reminder time field and display entry's reminder time.

			// If past then disable the field.

			if (!mReminderTimeAdded) {

				insertReminderTimeField();

				if (pastEvent) {

					mCustomReminderTimeItem->setEnabled(false);

				}

			}

			QStringList reminderChoicesForAllDay;

			reminderChoicesForAllDay << hbTrId("off") 

					<< hbTrId("On event day")

					<< hbTrId("1 day before")

					<< hbTrId("2 days before");

			mReminderItem->setContentWidgetData(QString("items"),

			                                    reminderChoicesForAllDay);

			QTime referenceTime(0, 0, 0);

			// Set the appropriate reminder depending on the value of time offset.

			reminder = mCalenEditor->editedEntry()->alarm();

			int offsetInMins = reminder.timeOffset();

			if (offsetInMins < 0 || offsetInMins == 0) {

				mReminderItem->setContentWidgetData("currentIndex", 1);

				mReminderTimeForAllDay = referenceTime.addSecs(-(offsetInMins

						* 60));

			} else if (offsetInMins < numberOfMinutesInADay) {

				mReminderItem->setContentWidgetData("currentIndex", 2);

				mReminderTimeForAllDay = referenceTime.addSecs(-(offsetInMins

						* 60));

			} else {

				mReminderItem->setContentWidgetData("currentIndex", 3);

				offsetInMins %= (24 * 60);

				mReminderTimeForAllDay = referenceTime.addSecs(-(offsetInMins

						* 60));

			}

			setDisplayTime();

		}

		if (pastEvent) {

			mReminderItem->setEnabled(false);

		}

	}

	mEditorForm->addConnection(mReminderItem,

							SIGNAL(currentIndexChanged(int)), this,

							SLOT(handleReminderIndexChanged(int)));

}

/*!

	Triggerd from tapping on reminder item.

	Handles the reminder time change and updates the same in the event.

	\param index The new index chosen in the reminder list.

 */

void CalenEditorReminderField::handleReminderIndexChanged(int index)

{

	AgendaAlarm reminder;

	if (!mCalenEditor->editedEntry()->alarm().isNull()) {

		reminder = mCalenEditor->editedEntry()->alarm();

	}

	// Check whether all day event or not and store appropriately.

	if (!mCalenEditor->isAllDayEvent()) {

		// then set the default constructed reminder to

		// the entry which is Null.

			// Construct the default alarm which is NULL

			reminder = AgendaAlarm();

		} else {

			// If not zero then set the reminder offset

			// value to the entry.

			reminder.setTimeOffset(mReminderHash.value(index));

			reminder.setAlarmSoundName(QString(" "));

		}

	} else {

		QDateTime reminderDateTimeForAllDay; 

		QDateTime

		        startDateTimeForAllDay(

		                               mCalenEditor->editedEntry()->startTime().date(),

		                               QTime(0, 0, 0));

		if (mReminderItem->contentWidgetData("currentIndex") == 0) {

			reminder = AgendaAlarm();

			mCustomReminderTimeItem->setEnabled(false);

		} else {

			int offset = 0;

			if (mReminderItem->contentWidgetData("currentIndex") == 2) {

				offset = 1;

			} else if (mReminderItem->contentWidgetData("currentIndex") == 3) {

				offset = 2;

			}

			if(!mReminderTimeAdded) {

				insertReminderTimeField()

;			}

			// If on same day as that of the event then check if time has been 

			// changed , if changed retain that else set default time.

			if (offset == 0) {

				if(mReminderTimeForAllDay == QTime(18, 0, 0, 0)) {

					mReminderTimeForAllDay.setHMS(8, 0, 0);

					setDisplayTime();

				}

			}

			reminderDateTimeForAllDay.setDate(

					mCalenEditor->editedEntry()->startTime().date().addDays(

																	-offset));

			reminderDateTimeForAllDay.setTime(mReminderTimeForAllDay);

			int seconds =

					reminderDateTimeForAllDay.secsTo(startDateTimeForAllDay);

			int timeOffest = seconds / 60;

			mCustomReminderTimeItem->setEnabled(true);

			reminder.setTimeOffset(timeOffest);

			reminder.setAlarmSoundName(QString(" "));

		}

	}

	// Set the reminder to the entry.

	mCalenEditor->editedEntry()->setAlarm(reminder);

	mCalenEditor->addDiscardAction();

}

/*!

	 Returns the mode index of the reminder item

	 \return Mode index of the reminder item

 */

QModelIndex CalenEditorReminderField::modelIndex()

{

	return mCalenEditorModel->indexFromItem(mReminderItem);

}

/*!

	 Set reminder off.

 */

void CalenEditorReminderField::setReminderOff()

{

	// Create the remindar choices

	QStringList reminderChoices;

	mReminderItem->setContentWidgetData(QString("items"), reminderChoices);

	mReminderItem->setEnabled(false); 

}

/*!

	 Set the default alarm for a new all day event.

 */

void CalenEditorReminderField::setDefaultAlarmForAllDay()

{	

	// Set default alarm if its a new entry.

	if (mCalenEditor->isNewEntry()) {

		AgendaAlarm reminder;

		QDate defaultDate

				(mCalenEditor->editedEntry()->startTime().date().addDays(-1));

		// Set default time.

		mReminderTimeForAllDay.setHMS(18, 0, 0, 0);

		setDisplayTime();

		QDateTime startDateTimeForAllDay(

				mCalenEditor->editedEntry()->startTime().date(), QTime(0, 0));

		QDateTime defaultReminderDateTimeForAllDay

				(defaultDate, mReminderTimeForAllDay);

		int offsetInSecs = 

				defaultReminderDateTimeForAllDay.secsTo(startDateTimeForAllDay);

		int offsetInMins = offsetInSecs/60;

		reminder.setTimeOffset(offsetInMins);

		reminder.setAlarmSoundName(QString(" "));

		// Set the reminder to the entry as well as original entry.

		mCalenEditor->editedEntry()->setAlarm(reminder);

		mCalenEditor->originalEntry()->setAlarm(reminder);

	}

}

/*!

	 Updates the reminder choices for an all day event.

	 \param referenceDate to indicate past or not.

 */

void CalenEditorReminderField::updateReminderChoicesForAllDay(QDate referenceDate)

{

	if (!mReminderTimeAdded){

		insertReminderTimeField();

	}

	QStringList reminderChoicesForAllDay;

	QDate tomorrow = QDate::currentDate().addDays(1);

	QDate theDayAfterTomorrow = QDate::currentDate().addDays(2);

	if (referenceDate < QDate::currentDate() || 

			referenceDate == QDate::currentDate()) {

		// Set reminder off for past event.

		mReminderItem->setContentWidgetData(QString("items"), 

													reminderChoicesForAllDay);

		mReminderItem->setEnabled(false); 

		removeReminderTimeField();

	} else if (theDayAfterTomorrow < referenceDate || 

			theDayAfterTomorrow == referenceDate) {

		mReminderItem->setEnabled(true);

		mCustomReminderTimeItem->setEnabled(true);

	} else {

		mReminderItem->setEnabled(true);

		mCustomReminderTimeItem->setEnabled(true);

	}

	if (mReminderItem->isEnabled()) {

		mReminderItem->setContentWidgetData(QString("items"), 

											reminderChoicesForAllDay);

	}

}

/*!

	 Insert the reminder time field for an all day event.

 */

void CalenEditorReminderField::insertReminderTimeField()

{

	HbDataFormModelItem::DataItemType itemType =

			static_cast<HbDataFormModelItem::DataItemType> (ReminderTimeOffset);

	// If all day item is not added then insert at one level before.

	int index = CalenEditorPrivate::ReminderTimeForAllDayItem;

	if(!mCalenEditor->isAllDayFieldAdded()) {

		index = CalenEditorPrivate::ReminderTimeForAllDayItem - 1;

	} 

	mCustomReminderTimeItem = mCalenEditorModel->insertDataFormItem(

							index,

							itemType,

							QString(hbTrId("Reminder Time")),

							mCalenEditorModel->invisibleRootItem());

	if (currentReminderIndex() != 1){

		mReminderTimeForAllDay.setHMS(18,0,0,0);

	} else {

		mReminderTimeForAllDay.setHMS(8,0,0,0);

	}

	mEditorForm->addConnection(mCustomReminderTimeItem, SIGNAL(clicked()),

	                           this, SLOT(launchReminderTimePicker()));

	setDisplayTime();

	mReminderTimeAdded = true;

}

/*!

	 Set the reminder time selected by the user.

 */

void CalenEditorReminderField::setDisplayTime()

{

	HbExtendedLocale locale = HbExtendedLocale::system();

	QString timeString = locale.format(

			mReminderTimeForAllDay,

			r_qtn_time_usual_with_zero);

	mCustomReminderTimeItem->setContentWidgetData("text", timeString);

}

/*!

	Remove the reminder time field if its not an all day event.

 */

void CalenEditorReminderField::removeReminderTimeField()

{

	mReminderTimeAdded = false;

	if (mCustomReminderTimeItem) {

					QModelIndex reminderIndex =

					        mCalenEditorModel->indexFromItem(mCustomReminderTimeItem);

					mCalenEditorModel->removeItem(

					                              mCalenEditorModel->index(

					                            		  reminderIndex.row(), 0));

					mCustomReminderTimeItem = NULL;

				}

}

/*!

	 Launches time picker to select time.

 */

void CalenEditorReminderField::launchReminderTimePicker()

{

	mTimePicker = new HbDateTimePicker(mReminderTimeForAllDay);

	mTimePicker->setTime(mReminderTimeForAllDay);

	HbDialog *popUp = new HbDialog();

	popUp->setDismissPolicy(HbDialog::NoDismiss);

	popUp->setTimeout(HbDialog::NoTimeout);

	popUp->setContentWidget(mTimePicker);

	popUp->setHeadingWidget( new HbLabel(

			hbTrId("Reminder Time")));

	HbAction *okAction = new HbAction(hbTrId("txt_common_button_ok"));

	popUp->addAction(okAction);

	connect(okAction, SIGNAL(triggered()), this, SLOT(setReminderTimeForAllDay()));

	connect(okAction, SIGNAL(triggered()), popUp, SLOT(close()));

	popUp->addAction(new HbAction(hbTrId("txt_common_button_cancel"),

	                                      popUp));

	popUp->open();

}

/*!

	 Set the reminder time chosen.

 */

void CalenEditorReminderField::setReminderTimeForAllDay()

{

	mReminderTimeForAllDay = mTimePicker->time();

	if (mReminderTimeForAllDay.isValid()) {

		// Change the time displayed to that selected by the user.

		setDisplayTime();

		handleReminderIndexChanged(currentReminderIndex());

	}	

}

/*!

	 Checks if reminder field is enabled or not.

 */

bool CalenEditorReminderField::isReminderFieldEnabled()

{

	return mReminderItem->isEnabled();

}

/*!

	 Returns the number of items present in the reminder option.

 */

int CalenEditorReminderField::reminderItemsCount()

{

	QVariant strings = mReminderItem->contentWidgetData("items");

	QStringList stringList(strings.toStringList());

	int count = stringList.count();

	return count;

}

/*!

	 Returns the current chosen index.