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** This file is part of the examples of the Qt Toolkit.
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#include "platforminputcontext.h"
#include "declarativeinputcontext.h"

#include <QWindow>
#include <QInputMethod>
#include <QGuiApplication>
#include <qdebug.h>

PlatformInputContext::PlatformInputContext() :
    m_declarativeContext(0), m_animating(false), m_visible(false),
    m_focusObject(0), m_locale("en_GB"), m_inputDirection(Qt::LeftToRight)
{
}

PlatformInputContext::~PlatformInputContext()
{
}

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

bool PlatformInputContext::isAnimating() const
{
    return m_animating;
}

bool PlatformInputContext::isInputPanelVisible() const
{
    return m_visible;
}

QRectF PlatformInputContext::keyboardRect() const
{
    return m_keyboardRect;
}

QLocale PlatformInputContext::locale() const
{
    return m_locale;
}

Qt::LayoutDirection PlatformInputContext::inputDirection() const
{
    return m_inputDirection;
}

void PlatformInputContext::reset()
{
    if (m_declarativeContext)
        m_declarativeContext->commit();
}

void PlatformInputContext::update(Qt::InputMethodQueries queries)
{
    if (m_declarativeContext)
        m_declarativeContext->update(queries);
}

void PlatformInputContext::showInputPanel() {
    if (!m_visible) {
        m_visible = true;
        if (m_declarativeContext) {
            m_declarativeContext->setInputMethodVisibleProperty(true);
        }
        emitInputPanelVisibleChanged();
    }
}

void PlatformInputContext::hideInputPanel() {
    if (m_visible) {
        m_visible = false;
        if (m_declarativeContext) {
            m_declarativeContext->setInputMethodVisibleProperty(false);
        }
        emitInputPanelVisibleChanged();
    }
}

void PlatformInputContext::setFocusObject(QObject *object)
{
    m_focusObject = object;
    bool enabled = false;
    if (m_focusObject) {
        QInputMethodQueryEvent event(Qt::ImEnabled);
        sendEvent(&event);
        enabled = event.value(Qt::ImEnabled).toBool();
    }
    if (m_declarativeContext) {
        bool focus = (object != 0 && enabled);
        m_declarativeContext->setFocus(focus);
        if (focus)
            m_declarativeContext->update(Qt::ImQueryAll);
        else
            hideInputPanel();
    }
}

void PlatformInputContext::sendEvent(QEvent *event)
{
    if (m_focusObject)
        QGuiApplication::sendEvent(m_focusObject, event);
}

void PlatformInputContext::sendKeyEvent(QKeyEvent *event)
{
    if (qApp && qApp->focusWindow())
        QGuiApplication::sendEvent(qApp->focusWindow(), event);
}

QVariant PlatformInputContext::inputMethodQuery(Qt::InputMethodQuery query)
{
    QInputMethodQueryEvent event(query);
    sendEvent(&event);
    return event.value(query);
}

void PlatformInputContext::setDeclarativeContext(DeclarativeInputContext *context)
{
    m_declarativeContext = context;
}