/*

* 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: 

*

*/

#include <QStandardItemModel>

#include <QDebug>

#include <hbmainwindow.h>

#include <hbapplication.h>

#include <hbaction.h>

#include <hbtreeview.h>

#include <hbscrollbar.h>

#include <hbmenu.h>

#include <hbtoolbar.h>

#include "HelpDataProvider.h"

#include "HelpCategoryView.h"

//////////////////////////////////////////////////////////////////////////////////////////////

HelpCategoryView::HelpCategoryView() : 

mListAll(NULL),

mExpandCount(0)

{

}

HelpCategoryView::~HelpCategoryView()

{

}

////////////////////////////////////////////////////////////////////////////////////////////

void HelpCategoryView::init()

{

	initDocMl();

    initAllList();

}

void HelpCategoryView::initDocMl()

{

	initBaseDocMl();

    mBuilder.load(QRC_DOCML_CATEGORY);

}

void HelpCategoryView::initAllList()

{

    mListAll = mBuilder.findWidget<HbTreeView*>(DOCML_LIST_CATEGORY_ALL);

    mListAll->setHorizontalScrollBarPolicy(HbScrollArea::ScrollBarAlwaysOff);

    mListAll->setModel(HelpDataProvider::instance()->getCategoryData());

    connect(mListAll, SIGNAL(activated(const QModelIndex&)), this, SLOT(onAllListActivated(const QModelIndex&)));

}

////////////////////////////////////////////////////////////////////////////////////////////

void HelpCategoryView::expandCollapseAllList(QStandardItem* item, bool expand)

{

	if(item->rowCount() <= 0)

	{

		return;

	}

	mListAll->setExpanded(item->index(),expand);

	for(int i = 0; i < item->rowCount(); i++)

	{		

		expandCollapseAllList(item->child(i),expand);

	}

}

void HelpCategoryView::updateExpandCollapseAction(bool expand)

{

	HbAction* allAction = mBuilder.findObject<HbAction*>(DOCML_ACTION_EXPAND_COLLAPSE_ALL);

	allAction->setText(expand ? hbTrId(TXT_EXPAND_ALL) : hbTrId(TXT_COLLAPSE_ALL));

}

////////////////////////////////////////////////////////////////////////////////////////////

// handle list event

void HelpCategoryView::onAllListActivated(const QModelIndex& index)

{

    if(!index.isValid() ||          // invalid

       index.child(0,0).isValid())  // this is a node

    {

		if(index.parent().isValid())

		{

			return;

		}

		if(mListAll->isExpanded(index))

		{

			mExpandCount++;

		}

		else

		{

			mExpandCount--;

		}

		updateExpandCollapseAction(mExpandCount == 0);

        return;

    }

    QString href = mListAll->model()->data(index, HrefRole).toString();

    HelpDataProvider::instance()->setHelpContentUrl(uid, href);

    emit activateView(HelpViewContents);

}

////////////////////////////////////////////////////////////////////////////////////////////

// handle menu event

void HelpCategoryView::onExpandOrCollapseAll()

{

	bool needExpand = (mExpandCount == 0);

	QStandardItemModel* model = (QStandardItemModel*)(mListAll->model());

	expandCollapseAllList(model->invisibleRootItem(),needExpand);

	mExpandCount = needExpand ?  model->invisibleRootItem()->rowCount() : 0;

	updateExpandCollapseAction(mExpandCount == 0);

}

// end of file