| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the test suite of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL-EXCEPT$ |
| ** 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 https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #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(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"); |
| } |