/***************************************************************************
**
** Copyright (C) 2011 - 2012 Research In Motion
** Contact: http://www.qt-project.org/legal
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qqnxinputcontext_noimf.h"
#include "qqnxabstractvirtualkeyboard.h"
#include "qqnxintegration.h"
#include "qqnxscreen.h"

#include <QtCore/QDebug>
#include <QtGui/QGuiApplication>

#if defined(QQNXINPUTCONTEXT_DEBUG)
#define qInputContextDebug qDebug
#else
#define qInputContextDebug QT_NO_QDEBUG_MACRO
#endif

QT_BEGIN_NAMESPACE

QQnxInputContext::QQnxInputContext(QQnxIntegration *integration, QQnxAbstractVirtualKeyboard &keyboard) :
    QPlatformInputContext(),
    m_inputPanelVisible(false),
    m_inputPanelLocale(QLocale::c()),
    m_integration(integration),
    m_virtualKeyboard(keyboard)
{
    connect(&keyboard, SIGNAL(heightChanged(int)), this, SLOT(keyboardHeightChanged()));
    connect(&keyboard, SIGNAL(visibilityChanged(bool)), this, SLOT(keyboardVisibilityChanged(bool)));
    connect(&keyboard, SIGNAL(localeChanged(QLocale)), this, SLOT(keyboardLocaleChanged(QLocale)));
    keyboardVisibilityChanged(keyboard.isVisible());
    keyboardLocaleChanged(keyboard.locale());
}

QQnxInputContext::~QQnxInputContext()
{
}

bool QQnxInputContext::isValid() const
{
    return true;
}

bool QQnxInputContext::hasPhysicalKeyboard()
{
    // TODO: This should query the system to check if a USB keyboard is connected.
    return false;
}

void QQnxInputContext::reset()
{
}

bool QQnxInputContext::filterEvent( const QEvent *event )
{
    if (hasPhysicalKeyboard())
        return false;

    if (event->type() == QEvent::CloseSoftwareInputPanel) {
        m_virtualKeyboard.hideKeyboard();
        qInputContextDebug() << Q_FUNC_INFO << "hiding virtual keyboard";
        return false;
    }

    if (event->type() == QEvent::RequestSoftwareInputPanel) {
        m_virtualKeyboard.showKeyboard();
        qInputContextDebug() << Q_FUNC_INFO << "requesting virtual keyboard";
        return false;
    }

    return false;

}

QRectF QQnxInputContext::keyboardRect() const
{
    QRect screenGeometry = m_integration->primaryDisplay()->geometry();
    return QRectF(screenGeometry.x(), screenGeometry.height() - m_virtualKeyboard.height(),
                  screenGeometry.width(), m_virtualKeyboard.height());
}

bool QQnxInputContext::handleKeyboardEvent(int flags, int sym, int mod, int scan, int cap)
{
    Q_UNUSED(flags);
    Q_UNUSED(sym);
    Q_UNUSED(mod);
    Q_UNUSED(scan);
    Q_UNUSED(cap);
    return false;
}

void QQnxInputContext::showInputPanel()
{
    qInputContextDebug() << Q_FUNC_INFO;
    m_virtualKeyboard.showKeyboard();
}

void QQnxInputContext::hideInputPanel()
{
    qInputContextDebug() << Q_FUNC_INFO;
    m_virtualKeyboard.hideKeyboard();
}

bool QQnxInputContext::isInputPanelVisible() const
{
    return m_inputPanelVisible;
}

QLocale QQnxInputContext::locale() const
{
    return m_inputPanelLocale;
}

void QQnxInputContext::keyboardHeightChanged()
{
    emitKeyboardRectChanged();
}

void QQnxInputContext::keyboardVisibilityChanged(bool visible)
{
    qInputContextDebug() << Q_FUNC_INFO << "visible=" << visible;
    if (m_inputPanelVisible != visible) {
        m_inputPanelVisible = visible;
        emitInputPanelVisibleChanged();
    }
}

void QQnxInputContext::keyboardLocaleChanged(const QLocale &locale)
{
    qInputContextDebug() << Q_FUNC_INFO << "locale=" << locale;
    if (m_inputPanelLocale != locale) {
        m_inputPanelLocale = locale;
        emitLocaleChanged();
    }
}

void QQnxInputContext::setFocusObject(QObject *object)
{
    qInputContextDebug() << Q_FUNC_INFO << "input item=" << object;

    if (!inputMethodAccepted()) {
        if (m_inputPanelVisible)
            hideInputPanel();
    } else {
        m_virtualKeyboard.setInputHintsFromObject(object);

        if (!m_inputPanelVisible)
            showInputPanel();
    }
}

QT_END_NAMESPACE