/****************************************************************************
**
** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (developer.feedback@nokia.com)
**
** This file is part of the HbUtils module of the UI Extensions for Mobile.
**
** GNU Lesser General Public License Usage
** 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 developer.feedback@nokia.com.
**
****************************************************************************/

#include "hbdocumentloaderfactory_p.h"

#include <QObject>
#include <QString>
#include <QByteArray>
#include <QGraphicsWidget>
#if QT_VERSION >= 0x040600 && defined(HBUTILS_WEBKIT)
#include <QGraphicsWebView>
#endif // QT_VERSION

#include <hbwidget.h>
#include <hbpushbutton.h>
#include <hblineedit.h>
#include <hbdatetimeedit.h>
#include <hbsearchpanel.h>
#include <hbmenu.h>
#include <hbview.h>
#include <hbprogressbar.h>
#include <hbscrollbar.h>
#include <hbstackedwidget.h>
#include <hbslider.h>
#include <hbsliderpopup.h>
#include <hbtoolbar.h>
#include <hblabel.h>
#include <hbdialog.h>
#include <hbtooltip.h>
#include <hblistview.h>
#include <hblistwidget.h>
#include <hbaction.h>
#include <hbzoomsliderpopup.h>
#include <hbvolumesliderpopup.h>
#include <hbscrollarea.h>
#include <hbgridview.h>
#include <hbradiobuttonlist.h>
#include <hbtextedit.h>
#include <hbratingslider.h>
#include <hbmessagebox.h>
#include <hbcheckbox.h>
#include <hbprogressslider.h>
#include <hbinputdialog.h>
#include <hbcolordialog.h>
#include <hbselectiondialog.h>
#include <hbcombobox.h>
#include <hbgroupbox.h>
#include <hbtreeview.h>
#include <hbtransparentwindow.h>
#include <hbdataform.h>
#include <hbabstractviewitem.h>
#include <hblistviewitem.h>
#include <hbdatetimepicker.h>
#include <hbgridviewitem.h>
#include <hbtreeviewitem.h>
#include <hbdataformviewitem.h>
#include <hbtumbleview.h>
#include <hbtumbleviewitem.h>

enum HbDocumentLoaderFactoryWidgetRoles {
    HbWidgetRoleUnknown, // needs to be the first one = 0
    HbWidgetRoleViewWidget,
    HbWidgetRoleViewToolBar,
    HbWidgetRoleViewMenu,
    HbWidgetRoleMenuSubmenu,
    HbWidgetRolePopupHeadingWidget,
    HbWidgetRolePopupContentWidget,
    HbWidgetRoleScrollAreaContents,
    HbWidgetRoleListViewPrototype,  // deprecated
    HbWidgetRoleGroupBoxContentWidget,
    HbWidgetRoleAbstractViewPrototype,
    HbWidgetRoleStackedContentWidget,
    HbWidgetRoleAmount // needs to be the last one
};

enum HbDocumentLoaderFactoryObjectRoles {
    HbObjectRoleUnknown, // needs to be the first one = 0
    HbObjectRoleDialogPrimaryAction, // deprecated
    HbObjectRoleDialogSecondaryAction, // deprecated
    HbObjectRoleMenuAction, // deprecated
    HbObjectRoleToolBarAction, // deprecated
    HbObjectRoleWidgetAction,
    HbObjectRoleAmount // needs to be the last one
};

struct HbDocumentLoaderFactoryKnownValue
{
    const char *name;
    int id;
};

// Used in binary seacrh, so keep name fields in alphabetical order.
const HbDocumentLoaderFactoryKnownValue widgetRoles[HbWidgetRoleAmount - 1] =
{
    { "HbAbstractView:prototype", HbWidgetRoleAbstractViewPrototype },
    { "HbDialog:contentWidget", HbWidgetRolePopupContentWidget },
    { "HbDialog:headingWidget", HbWidgetRolePopupHeadingWidget },
    { "HbGroupBox:contentWidget", HbWidgetRoleGroupBoxContentWidget },
    { "HbListView:prototype", HbWidgetRoleListViewPrototype },  // deprecated
    { "HbMenu:menu", HbWidgetRoleMenuSubmenu },
    { "HbScrollArea:contents", HbWidgetRoleScrollAreaContents },
    { "HbStackedWidget:contentWidget", HbWidgetRoleStackedContentWidget },
    { "HbView:menu", HbWidgetRoleViewMenu },
    { "HbView:toolBar", HbWidgetRoleViewToolBar },
    { "HbView:widget", HbWidgetRoleViewWidget }
};

// Used in binary seacrh, so keep name fields in alphabetical order.
const HbDocumentLoaderFactoryKnownValue objectRoles[HbObjectRoleAmount - 1] =
{
    { "HbDialog:primaryAction", HbObjectRoleDialogPrimaryAction }, // deprecated
    { "HbDialog:secondaryAction", HbObjectRoleDialogSecondaryAction }, // deprecated
    { "HbMenu:addAction", HbObjectRoleMenuAction }, // deprecated
    { "HbToolBar:addAction", HbObjectRoleToolBarAction }, // deprecated
    { "HbWidget:addAction", HbObjectRoleWidgetAction }
};

inline bool operator<(
        const QString &name, const HbDocumentLoaderFactoryKnownValue &prop)
{
    return QString::compare(name, QLatin1String(prop.name), Qt::CaseSensitive) < 0;
}

inline bool operator<(
        const HbDocumentLoaderFactoryKnownValue &prop, const QString &name)
{
    return QString::compare(QLatin1String(prop.name), name, Qt::CaseSensitive) < 0;
}

inline int findKnownValue(
    const QString &name,
    const HbDocumentLoaderFactoryKnownValue *start,
    int numValues)
{
    const HbDocumentLoaderFactoryKnownValue *end = &start[numValues - 1];
    const HbDocumentLoaderFactoryKnownValue *prop = qBinaryFind(start, end, name);
    if (prop == end) {
        return 0;
    }
    return prop->id;
}

/*
    \class HbDocumentLoaderFactory
    \internal
    \proto

    This \c HbDocumentLoaderFactory class is used to perform widget specific actions,
    such as creation of the widgets, which cannot be handled using QT's meta object system.
*/

HbDocumentLoaderFactory::HbDocumentLoaderFactory()
{
}

HbDocumentLoaderFactory::~HbDocumentLoaderFactory()
{
}

/*
    Creates instance of specified type and given object name.
    \param type type of the instance.
    \param name object name of the instance.
    \return newly created object.
*/
QObject *HbDocumentLoaderFactory::create(const QString& type, const QString& name)
{
    QObject *result = 0;

    const QByteArray typeArray = type.toUtf8();
    const char *typeString = typeArray.constData();

    #define CHECK_OBJECT_0(T) else if (!qstrcmp(typeString, #T)) { result = new T(); }

    if (result) {
        // unreachable, intentional
    }
    CHECK_OBJECT_0(QObject)
    CHECK_OBJECT_0(QGraphicsWidget)
    CHECK_OBJECT_0(HbWidget)
    CHECK_OBJECT_0(HbPushButton)
    CHECK_OBJECT_0(HbLabel)
    CHECK_OBJECT_0(HbMenu)
    CHECK_OBJECT_0(HbView)
    CHECK_OBJECT_0(HbSlider)
    CHECK_OBJECT_0(HbLineEdit)
    CHECK_OBJECT_0(HbDateTimeEdit)
    CHECK_OBJECT_0(HbSearchPanel)
    CHECK_OBJECT_0(HbToolBar)
    CHECK_OBJECT_0(HbScrollBar)
    CHECK_OBJECT_0(HbListView)
    CHECK_OBJECT_0(HbListWidget)
    CHECK_OBJECT_0(HbDialog)
    CHECK_OBJECT_0(HbProgressBar)
    CHECK_OBJECT_0(HbStackedWidget)
    CHECK_OBJECT_0(HbAction)
    CHECK_OBJECT_0(HbRadioButtonList)
    CHECK_OBJECT_0(HbZoomSliderPopup)
    CHECK_OBJECT_0(HbVolumeSliderPopup)
    CHECK_OBJECT_0(HbSliderPopup)
    CHECK_OBJECT_0(HbScrollArea)
    CHECK_OBJECT_0(HbGridView)
    CHECK_OBJECT_0(HbTextEdit)
    CHECK_OBJECT_0(HbCheckBox)
    CHECK_OBJECT_0(HbProgressSlider)
    CHECK_OBJECT_0(HbColorDialog)
    CHECK_OBJECT_0(HbSelectionDialog)
    CHECK_OBJECT_0(HbRatingSlider)
    CHECK_OBJECT_0(HbInputDialog)
    CHECK_OBJECT_0(HbMessageBox)
    CHECK_OBJECT_0(HbComboBox)
    CHECK_OBJECT_0(HbGroupBox)
    CHECK_OBJECT_0(HbTreeView)
    CHECK_OBJECT_0(HbTransparentWindow)
    CHECK_OBJECT_0(HbDataForm)
    CHECK_OBJECT_0(HbListViewItem)
    CHECK_OBJECT_0(HbDateTimePicker)
    CHECK_OBJECT_0(HbGridViewItem)
    CHECK_OBJECT_0(HbDataFormViewItem)
    CHECK_OBJECT_0(HbTreeViewItem)
    CHECK_OBJECT_0(HbTumbleView)
    CHECK_OBJECT_0(HbTumbleViewItem)
#if QT_VERSION >= 0x040600 && defined(HBUTILS_WEBKIT)
    CHECK_OBJECT_0(QGraphicsWebView)
#endif
    else {
    }

    if (result) {
        result->setObjectName(name);
    }
    return result;
}

/*
    Sets child widget to specified role in parent widget.
    If role is not specified, then basic parent-child relationship is created.

    \param parent parent widget.
    \param child child widget.
    \param role desired role for child widget.
    \param roleTransfersOwnership Must be updated to 'true' if owership of the child is
           moved to the parent, but the graphicsitem parent is not
    \return true upon success, false on failure.
*/
bool HbDocumentLoaderFactory::setWidgetRole(
    QGraphicsWidget *parent, 
    QGraphicsWidget *child, 
    const QString &role, 
    bool &roleTransfersOwnership )
{
    roleTransfersOwnership = false;

    if (role.isEmpty()) {
        child->setParentItem(parent);
        return true;
    }

    bool success = true;

    switch (findKnownValue(role, widgetRoles, HbWidgetRoleAmount)) {
    case HbWidgetRoleViewWidget:
        {
            HbView *view = qobject_cast<HbView *>(parent);
            success = (view != 0);
            if (view) {
                view->setWidget(child);
            }
        }
        break;

    case HbWidgetRolePopupHeadingWidget:
        {
            HbDialog *popup = qobject_cast<HbDialog *>(parent);
            success = (popup != 0);
            if (popup) {
                popup->setHeadingWidget(child);
            }
        }
        break;
    case HbWidgetRoleGroupBoxContentWidget:
        {
            HbGroupBox *groupBox = qobject_cast<HbGroupBox *>(parent);
            success = (groupBox != 0);
            if(groupBox) {
                groupBox->setContentWidget(qobject_cast<HbWidget *>(child));
            }
        }
        break;

    case HbWidgetRolePopupContentWidget:
        {
            HbDialog *popup = qobject_cast<HbDialog *>(parent);
            success = (popup != 0);
            if (popup) {
                popup->setContentWidget(child);
            }
        }
        break;

    case HbWidgetRoleViewToolBar:
        {
            HbView *view = qobject_cast<HbView *>(parent);
            success = (view != 0);
            if (view) {
                child->setParentItem(parent);
                view->setToolBar(qobject_cast<HbToolBar *>(child));
                roleTransfersOwnership = true;
            }
        }
        break;

    case HbWidgetRoleViewMenu:
        {
            HbView *view = qobject_cast<HbView *>(parent);
            success = (view != 0);
            if (view) {
                view->setMenu(qobject_cast<HbMenu *>(child));
                roleTransfersOwnership = true;
            }
        }
        break;

    case HbWidgetRoleMenuSubmenu:
        {
            HbMenu *menu = qobject_cast<HbMenu *>(parent);
            success = (menu != 0);
            if (menu) {
                menu->addMenu(qobject_cast<HbMenu *>(child));
                roleTransfersOwnership = true;
            }
        }
        break;

    case HbWidgetRoleScrollAreaContents:
        {
            HbScrollArea *scrollArea = qobject_cast<HbScrollArea *>(parent);
            success = (scrollArea != 0);
            if (scrollArea) {
                scrollArea->setContentWidget(child);
            }
        }
        break;

    case HbWidgetRoleAbstractViewPrototype:
        {
            HbAbstractItemView *view = qobject_cast<HbAbstractItemView *>(parent);
            HbAbstractViewItem *item = qobject_cast<HbAbstractViewItem *>(child);
            if (view && item) {
                success = true;
                view->setItemPrototype(item);
            } else {
                success = false;
            }
        }
        break;

    case HbWidgetRoleListViewPrototype:
        {
            HbListView *view = qobject_cast<HbListView *>(parent);
            HbAbstractViewItem * item = qobject_cast<HbAbstractViewItem *>(child);
            if (view && item) {
                success = true;
                view->setItemPrototype(item);
            } else {
                success = false;
            }
        }
        break;

    case HbWidgetRoleStackedContentWidget:
        {
            HbStackedWidget *stacked= qobject_cast<HbStackedWidget *>(parent);
            success = (stacked != 0);
            if (stacked) {
                stacked->addWidget(child);
            }
        }
        break;

    case HbWidgetRoleUnknown:
    default:
        success = false;
        break;
    }

    return success;
}

bool HbDocumentLoaderFactory::setObjectRole(
    QObject *parent, QObject *child, const QString &role)
{
    if (role.isEmpty()) {
        child->setParent(parent);
        return true;
    }

    bool success = true;

    switch (findKnownValue(role, objectRoles, HbObjectRoleAmount)) {
    case HbObjectRoleDialogPrimaryAction:
    case HbObjectRoleDialogSecondaryAction:
    case HbObjectRoleMenuAction:
    case HbObjectRoleToolBarAction:
    case HbObjectRoleWidgetAction:
        {
            HbWidget *widget = qobject_cast<HbWidget*>(parent);
            success = (widget != 0);
            if (widget) {
                widget->addAction(qobject_cast<HbAction *>(child));
            }
        }
        break;

    case HbObjectRoleUnknown:
    default:
        success = false;
        break;
    }

    return success;
}