/****************************************************************************

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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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** This file is part of the Qt Designer of the Qt Toolkit.

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****************************************************************************/

#include "widgetbox.h"

#include "widgetboxtreewidget.h"

#include "widgetbox_dnditem.h"

#include <QtDesigner/QDesignerFormEditorInterface>

#include <QtDesigner/QDesignerFormWindowManagerInterface>

#include <iconloader_p.h>

#include <qdesigner_utils_p.h>

#include <filterwidget_p.h>

#include <QtGui/QDropEvent>

#include <QtGui/QVBoxLayout>

#include <QtGui/QApplication>

#include <QtGui/QToolBar>

#include <QtGui/QIcon>

QT_BEGIN_NAMESPACE

namespace qdesigner_internal {

WidgetBox::WidgetBox(QDesignerFormEditorInterface *core, QWidget *parent, Qt::WindowFlags flags)

    : QDesignerWidgetBox(parent, flags),

      m_core(core),

      m_view(new WidgetBoxTreeWidget(m_core))

{

    QVBoxLayout *l = new QVBoxLayout(this);

    l->setMargin(0);

    l->setSpacing(0);

    // Prevent the filter from grabbing focus since Our view has Qt::NoFocus

    FilterWidget *filterWidget = new FilterWidget(0, FilterWidget::LayoutAlignNone);

    filterWidget->setRefuseFocus(true);

    connect(filterWidget, SIGNAL(filterChanged(QString)), m_view, SLOT(filter(QString)));

    l->addWidget(filterWidget);

    // View

    connect(m_view, SIGNAL(pressed(QString,QString,QPoint)),

            this, SLOT(handleMousePress(QString,QString,QPoint)));

    l->addWidget(m_view);

    setAcceptDrops (true);

}

WidgetBox::~WidgetBox()

{

}

QDesignerFormEditorInterface *WidgetBox::core() const

{

    return m_core;

}

void WidgetBox::handleMousePress(const QString &name, const QString &xml, const QPoint &global_mouse_pos)

{

    if (QApplication::mouseButtons() != Qt::LeftButton)

        return;

    DomUI *ui = xmlToUi(name, xml, true);

    if (ui == 0)

        return;

    QList<QDesignerDnDItemInterface*> item_list;

    item_list.append(new WidgetBoxDnDItem(core(), ui, global_mouse_pos));

    m_core->formWindowManager()->dragItems(item_list);

}

int WidgetBox::categoryCount() const

{

    return m_view->categoryCount();

}

QDesignerWidgetBoxInterface::Category WidgetBox::category(int cat_idx) const

{

    return m_view->category(cat_idx);

}

void WidgetBox::addCategory(const Category &cat)

{

    m_view->addCategory(cat);

}

void WidgetBox::removeCategory(int cat_idx)

{

    m_view->removeCategory(cat_idx);

}

int WidgetBox::widgetCount(int cat_idx) const

{

    return m_view->widgetCount(cat_idx);

}

QDesignerWidgetBoxInterface::Widget WidgetBox::widget(int cat_idx, int wgt_idx) const

{

    return m_view->widget(cat_idx, wgt_idx);

}

void WidgetBox::addWidget(int cat_idx, const Widget &wgt)

{

    m_view->addWidget(cat_idx, wgt);

}

void WidgetBox::removeWidget(int cat_idx, int wgt_idx)

{

    m_view->removeWidget(cat_idx, wgt_idx);

}

void WidgetBox::dropWidgets(const QList<QDesignerDnDItemInterface*> &item_list, const QPoint&)

{

    m_view->dropWidgets(item_list);

}

void WidgetBox::setFileName(const QString &file_name)

{

    m_view->setFileName(file_name);

}

QString WidgetBox::fileName() const

{

    return m_view->fileName();

}

bool WidgetBox::load()

{

    return m_view->load(loadMode());

}

bool WidgetBox::loadContents(const QString &contents)

{

    return m_view->loadContents(contents);

}

bool WidgetBox::save()

{

    return m_view->save();

}

static const QDesignerMimeData *checkDragEvent(QDropEvent * event,

                                               bool acceptEventsFromWidgetBox)

{

    const QDesignerMimeData *mimeData = qobject_cast<const QDesignerMimeData *>(event->mimeData());

    if (!mimeData) {

        event->ignore();

        return 0;

    }

    // If desired, ignore a widget box drag and drop, where widget==0.

    if (!acceptEventsFromWidgetBox) {

        const bool fromWidgetBox = !mimeData->items().first()->widget();

        if (fromWidgetBox) {

            event->ignore();

            return 0;

        }

    }

    mimeData->acceptEvent(event);

    return mimeData;

}

void WidgetBox::dragEnterEvent (QDragEnterEvent * event)

{

    // We accept event originating from the widget box also here,

    // because otherwise Windows will not show the DnD pixmap.

    checkDragEvent(event, true);

}

void WidgetBox::dragMoveEvent(QDragMoveEvent * event)

{

    checkDragEvent(event, true);

}

void WidgetBox::dropEvent(QDropEvent * event)

{

    const QDesignerMimeData *mimeData = checkDragEvent(event, false);

    if (!mimeData)

        return;

    dropWidgets(mimeData->items(), event->pos());

    QDesignerMimeData::removeMovedWidgetsFromSourceForm(mimeData->items());

}

QIcon WidgetBox::iconForWidget(const QString &className, const QString &category) const

{

    Widget widgetData;

    if (!findWidget(this, className, category, &widgetData))

        return QIcon();

    return m_view->iconForWidget(widgetData.iconName());

}

}  // namespace qdesigner_internal

QT_END_NAMESPACE