/*

* 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 NotesMainView class.

*

*/

// System includes

#include <QDateTime>

#include <HbListView>

#include <HbListWidget>

#include <HbAction>

#include <HbTextEdit>

#include <HbInstance>

#include <HbMainWindow>

#include <HbMenu>

#include <HbLabel>

#include <HbAbstractViewItem>

#include <HbAbstractItemView>

#include <HbGroupBox>

#include <HbListViewItem>

// User includes

#include "agendaeventviewer.h"

#include "notesmainview.h"

#include "notescommon.h"

#include "notesdocloader.h"

#include "agendautil.h"

#include "notesmodel.h"

#include "notessortfilterproxymodel.h"

#include "noteseditor.h"

/*!

	\class NotesMainView

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

			notes and todos.

	\sa NotesViewManager

 */

/*!

	Constructs the NotesMainView object.

	\param parent The parent of type QGraphicsWidget.

 */

NotesMainView::NotesMainView(QGraphicsWidget *parent)

:HbView(parent),

 mSelectedItem(0),

 mDeleteAction(0)

{

	// Nothing yet.

}

/*!

	Destructor.

 */

NotesMainView::~NotesMainView()

{

	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 NotesMainView::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());

	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("listView"));

	Q_ASSERT_X(

			mListView,

			"notesmainview.cpp",

			"Unable to find list view.");

	// 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 &)));

	connect(

			mNotesModel, SIGNAL(rowAdded(QModelIndex)),

			this, SLOT(scrollTo(QModelIndex)));

	// Get the view heading label

	mViewHeading = static_cast<HbLabel *> (

			mDocLoader->findWidget("viewHeading"));

	// Get the toolbar/menu actions.

	mAddNoteAction = static_cast<HbAction *> (

			mDocLoader->findObject("newNoteAction"));

	Q_ASSERT_X(

			mAddNoteAction,

			"notesmainview.cpp",

			"Unable to find addNoteAction.");

	connect(

			mAddNoteAction, SIGNAL(triggered()),

			this, SLOT(createNewNote()));

	mAllNotesAction = static_cast<HbAction *> (

			mDocLoader->findObject("allNotesAction"));

	Q_ASSERT_X(

			mAllNotesAction,

			"notesmainview.cpp",

			"Unable to find allNotesAction.");

	mAllNotesAction->setCheckable(true);

	mAllNotesAction->setChecked(true);

	connect(

			mAllNotesAction, SIGNAL(changed()),

			this, SLOT(handleActionStateChanged()));

	mViewCollectionAction = static_cast<HbAction *> (

			mDocLoader->findObject("collectionsViewAction"));

	Q_ASSERT_X(

			mViewCollectionAction,

			"notescollectionview.cpp",

			"Unable to find viewCollectionAction.");

	connect(

			mViewCollectionAction, SIGNAL(triggered()),

			this, SLOT(displayCollectionView()));

	mSubTitle = static_cast<HbGroupBox *>(

			mDocLoader->findWidget("viewHeading"));

	// 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)));

	// Update sub heading text for main view.

	updateSubTitle();

	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)));

}

/*!

	Slot which gets called when `+ New note' action is triggered from the view

	toolbar. This is responsible for launching the editor to create a new note.

 */

void NotesMainView::createNewNote()

{

	// Here we Display an editor to the use to enter text.

	mNotesEditor = new NotesEditor(mAgendaUtil, this);

	connect(

			mNotesEditor, SIGNAL(editingCompleted(bool)),

			this, SLOT(handleEditingCompleted(bool)));

	mNotesEditor->create(NotesEditor::CreateNote);

}

/*!

	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 NotesMainView::handleItemReleased(const QModelIndex &index)

{

	// 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;

	}

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

		// Construct agenda event viewer.

		mAgendaEventViewer = new AgendaEventViewer(mAgendaUtil, this);

		connect(

		// Launch agenda event viewer

		mAgendaEventViewer->view(

				entry, AgendaEventViewer::ActionEditDelete);

	}else if(AgendaEntry::TypeNote == entry.type()) {

		// Construct notes editor.

		mNotesEditor = new NotesEditor(mAgendaUtil, this);

		connect(

				mNotesEditor, SIGNAL(editingCompleted(bool)),

				this, SLOT(handleEditingCompleted(bool)));

		// Launch the notes editor with the obtained info.

		mNotesEditor->edit(entry);

	}

}

/*!

	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 NotesMainView::handleItemLongPressed(

		HbAbstractViewItem *item, const QPointF &coords)

{

	mSelectedItem = item;

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

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

	AgendaEntry entry = mAgendaUtil->fetchById(noteId);

	// Display a context specific menu.

	HbMenu *contextMenu = new HbMenu();

	// Add actions to the context menu.

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

		mEditTodoAction =

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

		connect(

				mEditTodoAction, SIGNAL(triggered()),

				this, SLOT(editTodo()));

	}

	mDeleteAction =

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

	connect(

			mDeleteAction, SIGNAL(triggered()),

			this, SLOT(deleteNote()));

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

		if (entry.favourite()) {

			mMakeFavouriteAction = contextMenu->addAction(

					hbTrId("txt_notes_menu_remove_from_favorites"));

			connect(

					mMakeFavouriteAction, SIGNAL(triggered()),

					this, SLOT(markNoteAsFavourite()));

		} else {

			mMakeFavouriteAction = contextMenu->addAction(

					hbTrId("txt_notes_menu_mark_as_favorite"));

			connect(

					mMakeFavouriteAction, SIGNAL(triggered()),

					this, SLOT(markNoteAsFavourite()));

		}

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

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

			mTodoStatusAction = contextMenu->addAction(

					hbTrId("txt_notes_menu_mark_as_done"));

			connect(

					mTodoStatusAction , SIGNAL(triggered()),

					this, SLOT(markTodoStatus()));

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

			mTodoStatusAction = contextMenu->addAction(

					hbTrId("txt_notes_menu_mark_as_not_done"));

			connect(

					mTodoStatusAction , SIGNAL(triggered()),

					this, SLOT(markTodoStatus()));

		}

	}

	// Show the menu.

	contextMenu->exec(coords);

}

/*!

	Slot to delete a selected note.

 */

void NotesMainView::deleteNote()

{

	Q_ASSERT(mSelectedItem);

	QModelIndex index = mSelectedItem->modelIndex();

	if (!index.isValid()) {

		return;

	}

	ulong noteId =

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

	if (!noteId) {

		return;

	}

	mSelectedItem = 0;

}

/*!

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

	\param entry reference to the agenda entry

	\param status is true if to-do entry to be marked as done

			is false if to-do entry to be marked as undone

 */

void NotesMainView::markTodoStatus()

{

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

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

	AgendaEntry entry = mAgendaUtil->fetchById(noteId);

	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);

	}

}

/*!

	Marks/unmarks the note as favourite.

 */

void NotesMainView::markNoteAsFavourite()

{

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

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

	AgendaEntry entry = mAgendaUtil->fetchById(noteId);

	if (entry.favourite()) {

		entry.setFavourite(0);

	} else {

		entry.setFavourite(1);

	}

	mAgendaUtil->updateEntry(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 NotesMainView::handleEditingCompleted(bool status)

{

	Q_UNUSED(status)

	// Cleanup.

	mNotesEditor->deleteLater();

}

/*!

	Displays the collections' view.

 */

void NotesMainView::displayCollectionView()

{

	// Switch to collections view.

	mAppControllerIf->switchToView(NotesNamespace::NotesCollectionViewId);

}

/*!

	Slot where the list view is made to scroll to the QModelIndex index.

	\param index QModelIndex to be scrolled to.

 */

void NotesMainView::scrollTo(QModelIndex index)

{

	mListView->scrollTo(index, HbAbstractItemView::EnsureVisible);

}

/*!

	Slot to handle viewing Completed signal from agenda event viewer

	\param status Indicates the status of viewing

 */

{

	mAgendaEventViewer->deleteLater();

}

/*!

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

 */

void NotesMainView::handleActionStateChanged()

{

	mAllNotesAction->setChecked(true);

}

/*!

	Launches the to-do editor to edit the to-do entry

 */

void NotesMainView::editTodo()

{

	// Get the selected list item index

	QModelIndex index = mSelectedItem->modelIndex();

	if (!index.isValid()) {

		return;

	}

	ulong todoId =

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

	if (!todoId) {

		return;

	}

	// Construct notes editor.

	mNotesEditor = new NotesEditor(mAgendaUtil, this);

	connect(

			mNotesEditor, SIGNAL(editingCompleted(bool)),

			this, SLOT(handleEditingCompleted(bool)));

	// Launch the to-do editor with the obtained info.

	mNotesEditor->edit(todoId);

}

/*!

	Handles the orientation changes.Updates the list

	item when orientation is changed

	\param orientation Value of the orientation

 */

void NotesMainView::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 NotesMainView::updateSubTitle(ulong id)

{

	Q_UNUSED(id)

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

	QList<ulong> entries = mAgendaUtil->entryIds(

			(AgendaUtil::FilterFlags)