/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** No Commercial Usage
**
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/

#include "anchorlineindicator.h"

#include <QSet>

namespace QmlDesigner {

AnchorLineIndicator::AnchorLineIndicator(LayerItem *layerItem)
  :  m_layerItem(layerItem)
{
    Q_ASSERT(layerItem);
}

AnchorLineIndicator::~AnchorLineIndicator()
{
    m_itemControllerHash.clear();
}

void AnchorLineIndicator::show(AnchorLine::Type anchorLineMask)
{
    QHashIterator<FormEditorItem*, AnchorLineController> itemControllerIterator(m_itemControllerHash);
    while (itemControllerIterator.hasNext()) {
        AnchorLineController controller = itemControllerIterator.next().value();
        controller.show(anchorLineMask);
    }
}

void AnchorLineIndicator::hide()
{
    QHashIterator<FormEditorItem*, AnchorLineController> itemControllerIterator(m_itemControllerHash);
    while (itemControllerIterator.hasNext()) {
        AnchorLineController controller = itemControllerIterator.next().value();
        controller.hide();
    }
}

void AnchorLineIndicator::clear()
{
    m_itemControllerHash.clear();
}

void AnchorLineIndicator::setItem(FormEditorItem* item)
{
    if (!item)
        return;

    QList<FormEditorItem*> itemList;
    itemList.append(item);

    setItems(itemList);
}

static bool equalLists(const QList<FormEditorItem*> &firstList, const QList<FormEditorItem*> &secondList)
{
    return firstList.toSet() == secondList.toSet();
}

void AnchorLineIndicator::setItems(const QList<FormEditorItem*> &itemList)
{
    if (equalLists(itemList, m_itemControllerHash.keys()))
        return;

    clear();

    foreach (FormEditorItem *item, itemList) {
        AnchorLineController controller(m_layerItem, item);
        m_itemControllerHash.insert(item, controller);
    }

    show(AnchorLine::AllMask);
}

void AnchorLineIndicator::updateItems(const QList<FormEditorItem*> &itemList)
{
    foreach (FormEditorItem *item, itemList) {
        if (m_itemControllerHash.contains(item)) {
            AnchorLineController controller(m_itemControllerHash.value(item));
            controller.updatePosition();
        }
    }
}

void AnchorLineIndicator::update()
{
    foreach (FormEditorItem *item, m_itemControllerHash.keys()) {
        if (m_itemControllerHash.contains(item)) {
            AnchorLineController controller(m_itemControllerHash.value(item));
            controller.updatePosition();
        }
    }
}

void AnchorLineIndicator::clearHighlight()
{
    foreach (FormEditorItem *item, m_itemControllerHash.keys()) {
        if (m_itemControllerHash.contains(item)) {
            AnchorLineController controller(m_itemControllerHash.value(item));
            controller.clearHighlight();
        }
    }
}

} // namespace QmlDesigner