/*

* Copyright (c) 2009 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 file for NotesTodoView class.

*

*/

// System includes

#include <QDateTime>

#include <HbListView>

#include <HbListWidget>

#include <HbAction>

#include <HbTextEdit>

#include <HbInstance>

#include <HbMainWindow>

#include <HbMenu>

#include <HbDialog>

#include <HbLabel>

#include <HbAbstractViewItem>

#include <HbGroupBox>

#include <HbListViewItem>

// User includes

#include "agendaeventviewer.h"

#include "notestodoview.h"

#include "notescommon.h"

#include "notesdocloader.h"

#include "agendautil.h"

#include "notesmodel.h"

#include "notessortfilterproxymodel.h"

#include "noteseditor.h"

/*!

	\class NotesTodoView

	\brief The main view of the notes application. Responsible for displaying

			notes and todos.

	\sa NotesViewManager

 */

/*!

	Constructs the NotesTodoView object.

	\param parent The parent of type QGraphicsWidget.

 */

NotesTodoView::NotesTodoView(QGraphicsWidget *parent)

:HbView(parent),

 mSelectedItem(0),

 mDeleteAction(0),

 mIsLongTop(false)

{

	// Nothing yet.

}

/*!

	Destructor.

 */

NotesTodoView::~NotesTodoView()

{

	if (mDocLoader) {

	    delete mDocLoader;

	    mDocLoader = 0;

    }

}

/*!

	Called by the NotesViewManager after loading the view from the docml.

	The initializaion/setup of the view is done here.

	\param controller The NotesAppController object.

	\param docLoader Pointer to NotesDocLoader object.

 */

void NotesTodoView::setupView(

		NotesAppControllerIf &controllerIf, NotesDocLoader *docLoader)

{

	mDocLoader = docLoader;

	mAppControllerIf = &controllerIf;

	mNotesModel = mAppControllerIf->notesModel();

	mAgendaUtil = mAppControllerIf->agendaUtil();

	mProxyModel = new NotesSortFilterProxyModel(*mAgendaUtil, this);

	mProxyModel->setDynamicSortFilter(true);

	mProxyModel->setSourceModel(mNotesModel->sourceModel());

	mProxyModel->setFilterRole(NotesNamespace::TypeRole);

	mProxyModel->setFilterRegExp(QRegExp(QString("todo")));

	NotesSortFilterProxyModel *subModel =

			new NotesSortFilterProxyModel(*mAgendaUtil, this);

	subModel->setDynamicSortFilter(true);

	subModel->setSourceModel(mProxyModel);

	// Get the list object from the document and update the model.

	mListView = static_cast<HbListView *>

			(mDocLoader->findWidget("todoListView"));

	// Update the list view model.

	mListView->setModel(subModel);

	// Setup the operations that can be done with a list view.

	connect(

			mListView, SIGNAL(activated(const QModelIndex &)),

			this, SLOT(handleItemReleased(const QModelIndex &)));

	connect(

			mListView,

			SIGNAL(longPressed(HbAbstractViewItem *, const QPointF &)),

			this,

			SLOT(handleItemLongPressed(HbAbstractViewItem *, const QPointF &)));

	// Get the empty list string.

	mEmptyListLabel = static_cast<HbLabel *> (

			mDocLoader->findWidget("emptyListLabel"));

	// Get the toolbar/menu actions.

	mAddTodoAction = static_cast<HbAction *> (

			mDocLoader->findObject("newTodoAction"));

	connect(

			mAddTodoAction, SIGNAL(triggered()),

			this, SLOT(createNewTodo()));

	mAllNotesAction = static_cast<HbAction *> (

			mDocLoader->findObject("allNotesAction"));

	connect(

			mAllNotesAction, SIGNAL(triggered()),

			this, SLOT(displayAllNotesView()));

	mViewCollectionAction = static_cast<HbAction *> (

			mDocLoader->findObject("displayCollectionsAction"));

	connect(

			mViewCollectionAction, SIGNAL(changed()),

			this, SLOT(handleActionStateChanged()));

	connect(

			mViewCollectionAction, SIGNAL(triggered()),

			this, SLOT(displayCollectionView()));

	// Handles the orientation change for list items

	HbMainWindow *window = hbInstance->allMainWindows().first();

	handleOrientationChanged(window->orientation());

	connect(

			window, SIGNAL(orientationChanged(Qt::Orientation)),

			this, SLOT(handleOrientationChanged(Qt::Orientation)));

	mSubTitle = static_cast<HbGroupBox *>(

			mDocLoader->findWidget("subtitleGroupBox"));

	connect(

			mAgendaUtil, SIGNAL(entryAdded(ulong)),

			this,SLOT(updateSubTitle(ulong)));

	connect(

			mAgendaUtil, SIGNAL(entryDeleted(ulong)),

			this,SLOT(updateSubTitle(ulong)));

	connect(

			mAgendaUtil, SIGNAL(entryUpdated(ulong)),

			this, SLOT(updateSubTitle(ulong)));

	// Set the graphics size for the icons.

	HbListViewItem *prototype = mListView->listItemPrototype();

	prototype->setGraphicsSize(HbListViewItem::SmallIcon);

}

/*

	Updates the title text for the first launch

 */

void NotesTodoView::updateTitle()

{

	updateSubTitle();

}

/*!

	Opens the to-do editor to create a new to-do.

 */

void NotesTodoView::createNewTodo()

{

	mNotesEditor = new NotesEditor(mAgendaUtil, this);

	connect(

			mNotesEditor, SIGNAL(editingCompleted(bool)),

			this, SLOT(handleEditingCompleted(bool)));

	mNotesEditor->create(NotesEditor::CreateTodo);

}

/*!

	Handles the pressing of a list item in the view.

	Here we open the editor for viewing/editing.

	\param index Reference to the QModelIndex representing the view item.

	\sa HbAbstractViewItem

 */

void NotesTodoView::handleItemReleased(const QModelIndex &index)

{

	if(!mIsLongTop) {

		// Sanity check.

		if (!index.isValid()) {

			return;

		}

		// First get the id of the to-do and get the corresponding information from

		// agendautil.

		ulong toDoId = index.data(NotesNamespace::IdRole).value<qulonglong>();

		if (0 >= toDoId) {

			// Something wrong.

			return;

		}

		// Construct agenda event viewer.

		mAgendaEventViewer = new AgendaEventViewer(mAgendaUtil, this);

		connect(

				mAgendaEventViewer, SIGNAL(viewingCompleted(const QDate)),

				this, SLOT(handleViewingCompleted()));

		// Launch agenda event viewer

		mAgendaEventViewer->view(toDoId, AgendaEventViewer::ActionEditDelete);

	}

}

/*!

	Displays a list item specific context menu.

	\param item The HbAbstractViewItem that was long pressed.

	\param coords The position where mouse was pressed.

	\sa HbAbstractViewItem, HbListView, HbMenu.

 */

void NotesTodoView::handleItemLongPressed(

		HbAbstractViewItem *item, const QPointF &coords)

{

	mSelectedItem = item;

	mIsLongTop = true;

	// Get the entry of the selected item.

	ulong noteId = item->modelIndex().data(

			NotesNamespace::IdRole).value<qulonglong>();

	AgendaEntry entry = mAgendaUtil->fetchById(noteId);

	// Display a context specific menu.

	HbMenu *contextMenu = new HbMenu();

	connect(

			contextMenu,SIGNAL(aboutToClose()),

			this, SLOT(handleMenuClosed()));

	// Add actions to the context menu.

	mOpenAction =

			contextMenu->addAction(hbTrId("txt_common_menu_open"));

	mEditAction = contextMenu->addAction(

			hbTrId("txt_common_menu_edit"));

	mDeleteAction = contextMenu->addAction(

			hbTrId("txt_common_menu_delete"));

	if (AgendaEntry::TypeTodo == entry.type()) {

		if (AgendaEntry::TodoNeedsAction == entry.status()) {

			mTodoStatusAction = contextMenu->addAction(

					hbTrId("txt_notes_menu_mark_as_done"));

		} else if (AgendaEntry::TodoCompleted == entry.status()) {

			mTodoStatusAction =

					contextMenu->addAction(

							hbTrId("txt_notes_menu_mark_as_not_done"));

		}

	}

	// Show the menu.

	contextMenu->open(this, SLOT(selectedMenuAction(HbAction*)));

	contextMenu->setPreferredPos(coords);

}

/*!

	Slot to delete a selected to-do.

 */

void NotesTodoView::deleteTodo()

{

	Q_ASSERT(mSelectedItem);

	QModelIndex index = mSelectedItem->modelIndex();

	if (!index.isValid()) {

		return;

	}

	ulong entryId =

			index.data(NotesNamespace::IdRole).value<qulonglong>();

	if (!entryId) {

		return;

	}

	// Emit the signal. Delete would be handled in view manager.

	emit deleteEntry(entryId);

	mSelectedItem = 0;

}

/*!

	Marks to-do entry as done or undone based on the completed value.

 */

void NotesTodoView::markTodoStatus()

{

	ulong entryId = mSelectedItem->modelIndex().data(

			NotesNamespace::IdRole).value<qulonglong>();

	AgendaEntry entry = mAgendaUtil->fetchById(entryId);

	QDateTime currentDateTime = QDateTime::currentDateTime();

	if (AgendaEntry::TodoNeedsAction == entry.status()) {

		mAgendaUtil->setCompleted(entry, true, currentDateTime);

	} else if (AgendaEntry::TodoCompleted == entry.status()) {

		mAgendaUtil->setCompleted(entry, false, currentDateTime);

	}

}

/*!

	Opens to-do in an editor.

 */

void NotesTodoView::editTodo()

{

	QModelIndex index = mSelectedItem->modelIndex();

	// Sanity check.

	if (!index.isValid()) {

		return;

	}

	// First get the id of the note and get the corresponding information from

	// agendautil.

	ulong noteId = index.data(NotesNamespace::IdRole).value<qulonglong>();

	if (0 >= noteId) {

		// Something wrong.

		return;

	}

	// Get the entry details.

	AgendaEntry entry = mAgendaUtil->fetchById(noteId);

	if (entry.isNull()) {

		// Entry invalid.

		return;

	}

	// Now launch the editor with the obtained info.

	mNotesEditor = new NotesEditor(mAgendaUtil, this);

	connect(

			mNotesEditor, SIGNAL(editingCompleted(bool)),

			this, SLOT(handleEditingCompleted(bool)));

	mNotesEditor->edit(entry);

}

/*!

	Slot to handle the signal editingCompleted by the notes editor.

	\param status Boolean value indicating whether the note was saved or not.

	\sa NotesEditor.

 */

void NotesTodoView::handleEditingCompleted(bool status)

{

	Q_UNUSED(status)

	// Cleanup.

	mNotesEditor->deleteLater();

}

/*!

	Directs the view manager to display the Collections view.

 */

void NotesTodoView::displayCollectionView()

{

	// Switch to collections view.

	mAppControllerIf->switchToView(NotesNamespace::NotesCollectionViewId);

}

/*!

	Directs the view manager to display the All notes view.

 */

void NotesTodoView::displayAllNotesView()

{

	// Switch to collections view.

	mAppControllerIf->switchToView(NotesNamespace::NotesMainViewId);

}

/*!

	Slot to handle signal editingCompleted by the to-do editor

 */

void NotesTodoView::handleEditingCompleted()

{

	// Cleanup.

	mNotesEditor->deleteLater();

}

/*!

	Slot to handle signal handleViewingompleted by the agenda event viewer

 */

void NotesTodoView::handleViewingCompleted()

{

	// Cleanup.

	mAgendaEventViewer->deleteLater();

}

/*!

	Slot to handle the case when the state of an action has changed.

 */

void NotesTodoView::handleActionStateChanged()

{

	mAllNotesAction->setChecked(true);

}

/*!

	Handles the orientation changes.Updates the list

	item when orientation is changed

	\param orientation Value of the orientation

 */

void NotesTodoView::handleOrientationChanged(Qt::Orientation orientation)

{

	HbListViewItem *prototype = mListView->listItemPrototype();

	if (Qt::Horizontal == orientation) {

		prototype->setStretchingStyle(HbListViewItem::StretchLandscape);

	} else {

		prototype->setStretchingStyle(HbListViewItem::NoStretching);

	}

}

/*!

	Updates the sub heading text

 */

void NotesTodoView::updateSubTitle(ulong id)

{

	Q_UNUSED(id)

	// Get the number of notes and to-do entries.

	QList<ulong> entries = mAgendaUtil->entryIds(

		AgendaUtil::IncludeIncompletedTodos);

	mSubTitle->setHeading(

			hbTrId("txt_notes_subhead_todos_ln_pending",entries.count()));

	if (0 >= entries.count()) {

		mEmptyListLabel->show();

		mListView->hide();

	} else {

		mEmptyListLabel->hide();

		mListView->show();

	}

}

/*

	Opens the to-do viewer to view the to-do.

 */

void NotesTodoView::openTodo()

{

	ulong noteId = mSelectedItem->modelIndex().data(

			NotesNamespace::IdRole).value<qulonglong>();

	AgendaEntry entry = mAgendaUtil->fetchById(noteId);

	// Construct agenda event viewer.

	mAgendaEventViewer = new AgendaEventViewer(mAgendaUtil, this);

	connect(

			mAgendaEventViewer, SIGNAL(viewingCompleted(bool)),

			this, SLOT(handleViewingCompleted(bool)));

	// Launch agenda event viewer

	mAgendaEventViewer->view(

			entry, AgendaEventViewer::ActionEditDelete);

}

/*

	Slot to handle the context menu actions.

 */

void NotesTodoView::selectedMenuAction(HbAction *action)

{

	if (action == mOpenAction) {

		openTodo();

	} else if (action == mEditAction) {

		editTodo();

	} else if (action == mDeleteAction) {

		deleteTodo();

	} else if (action == mTodoStatusAction) {

		markTodoStatus();

	}

}

/*!

	Slot to handle the context menu closed.

 */

void NotesTodoView::handleMenuClosed()

{

	mIsLongTop = false;

}

// End of file	--Don't remove this.