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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "propertywatcher.h"
#include <QMetaProperty>
#include <QFormLayout>
#include <QPushButton>
#include <QLabel>
#include "propertyfield.h"
PropertyWatcher::PropertyWatcher(QObject *subject, QString annotation, QWidget *parent)
: QWidget(parent), m_subject(Q_NULLPTR), m_formLayout(new QFormLayout(this))
{
setMinimumSize(450, 300);
m_formLayout->setFieldGrowthPolicy(QFormLayout::ExpandingFieldsGrow);
setSubject(subject, annotation);
}
class UpdatesEnabledBlocker
{
Q_DISABLE_COPY(UpdatesEnabledBlocker);
public:
explicit UpdatesEnabledBlocker(QWidget *w) : m_widget(w)
{
m_widget->setUpdatesEnabled(false);
}
~UpdatesEnabledBlocker()
{
m_widget->setUpdatesEnabled(true);
m_widget->update();
}
private:
QWidget *m_widget;
};
void PropertyWatcher::setSubject(QObject *s, const QString &annotation)
{
if (s == m_subject)
return;
UpdatesEnabledBlocker blocker(this);
if (m_subject) {
disconnect(m_subject, &QObject::destroyed, this, &PropertyWatcher::subjectDestroyed);
for (int i = m_formLayout->count() - 1; i >= 0; --i) {
QLayoutItem *item = m_formLayout->takeAt(i);
delete item->widget();
delete item;
}
window()->setWindowTitle(QString());
window()->setWindowIconText(QString());
}
m_subject = s;
if (!m_subject)
return;
const QMetaObject* meta = m_subject->metaObject();
QString title = QLatin1String("Properties ") + QLatin1String(meta->className());
if (!m_subject->objectName().isEmpty())
title += QLatin1Char(' ') + m_subject->objectName();
if (!annotation.isEmpty())
title += QLatin1Char(' ') + annotation;
window()->setWindowTitle(title);
for (int i = 0, count = meta->propertyCount(); i < count; ++i) {
const QMetaProperty prop = meta->property(i);
if (prop.isReadable()) {
QLabel *label = new QLabel(prop.name(), this);
PropertyField *field = new PropertyField(m_subject, prop, this);
m_formLayout->addRow(label, field);
if (!qstrcmp(prop.name(), "name"))
window()->setWindowIconText(prop.read(m_subject).toString());
label->setVisible(true);
field->setVisible(true);
}
}
connect(m_subject, &QObject::destroyed, this, &PropertyWatcher::subjectDestroyed);
QPushButton *updateButton = new QPushButton(QLatin1String("Update"), this);
connect(updateButton, &QPushButton::clicked, this, &PropertyWatcher::updateAllFields);
m_formLayout->addRow(QString(), updateButton);
}
void PropertyWatcher::updateAllFields()
{
QList<PropertyField *> fields = findChildren<PropertyField*>();
foreach (PropertyField *field, fields)
field->propertyChanged();
emit updatedAllFields(this);
}
void PropertyWatcher::subjectDestroyed()
{
qDebug("screen destroyed");
}
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