/*

* 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: 

*

*/

#include "WebChromeContainerSnippet.h"

#include "WebChromeItem.h"

#include "ChromeWidget.h"

#include "ChromeRenderer.h"

#include "ChromeSnippet.h"

#include <QDebug>

namespace GVA {

  WebChromeContainerSnippet::WebChromeContainerSnippet(const QString & elementId, ChromeWidget * chrome, const QRectF& ownerArea, const QWebElement & element, QGraphicsWidget* gwidget)

    : ChromeSnippet(elementId, chrome, gwidget, element),

      m_ownerArea(ownerArea),

      m_layoutHeight(0)

  {

    QGraphicsWidget * item = static_cast<QGraphicsWidget*> (widget());

    //NB: maybe size should be fixed only in one direction?

    item->setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed)); 

    //NB: add a method for setting owner area

    //item->setPreferredSize(m_ownerArea.width(), m_ownerArea.height());

    //Also resize in case item is not part of anchor layout

    //item->resize(item->preferredSize());

   //NB: Linear layout efaults to horizontal: handle vertical layouts too.   

    m_layout = new QGraphicsLinearLayout();

    m_layout->setContentsMargins(0,0,0,0);

    m_layout->setSpacing(0);

    //Add a stretch element at the beginning.

    m_layout->addStretch();

    item->setLayout(m_layout);

    //When chrome is resized owner areas for snippets may change

    QObject::connect(m_chrome->renderer(), SIGNAL(chromeResized()), this, SLOT(updateOwnerArea()));

  }

  WebChromeContainerSnippet::~WebChromeContainerSnippet()

  {

    // delete m_layout;

  }

  void WebChromeContainerSnippet::positionChildren()

  {

    ; //Do nothing since the layout positions children automatically.

  }

  void WebChromeContainerSnippet::addChild(ChromeSnippet * child)

  {

    //Prevent layout from stretching the child widgets. NB: Revisit this to make configurable from chrome?

    child->widget()->setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed));

    //child->widget()->setParentItem(this->widget()); // Shouldn't be needed, right?

    m_layout->addItem(child->widget());

    //Add a stretch after each element so the layout looks like this: |stretch|item|stretch|item . . . . stretch|item|

    m_layout->addStretch();

    // If child is not a container itself, connect to its mouseEvent

    WebChromeContainerSnippet * s = qobject_cast <WebChromeContainerSnippet * >(child);

    if (!s ) {

      //qDebug() << __PRETTY_FUNCTION__ << s  << child->elementId();

      // Connect to mouse events of snippets

      WebChromeItem * item = static_cast<WebChromeItem*> (child->widget());

      connect(item, SIGNAL(mouseEvent(QEvent::Type)), this, SIGNAL(snippetMouseEvent(QEvent::Type)));

    } 

    qreal childHeight = child->widget()->size().height();

    if(childHeight > m_layoutHeight){

      m_layoutHeight = childHeight;

      updateOwnerArea();

    }

  }

  void WebChromeContainerSnippet:: updateOwnerArea()

  {

    QGraphicsWidget * item = static_cast<QGraphicsWidget*> (widget());

    //Resize the item

    m_ownerArea =  m_chrome->getSnippetRect(m_elementId);

    item->setPreferredSize(m_ownerArea.width(), m_layoutHeight);

    //Also resize in case item is not part of anchor layout

    item->resize(item->preferredSize());

  }

  void WebChromeContainerSnippet::setLayoutHeight(int height){

    if(m_layoutHeight != height){

      m_layoutHeight = height;

      updateOwnerArea();

    }

  }

} // endof namespace GVA