107 lines
3.3 KiB
C++
107 lines
3.3 KiB
C++
// FGQmlPropertyNode.hxx - expose SGPropertyNode to QML
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//
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// Copyright (C) 2019 James Turner <james@flightgear.org>
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#ifndef FGQMLPROPERTYNODE_HXX
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#define FGQMLPROPERTYNODE_HXX
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#include <QObject>
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#include <QQmlListProperty>
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#include <QVariant>
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#include <simgear/props/props.hxx>
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class FGQmlPropertyNode : public QObject,
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public SGPropertyChangeListener
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{
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Q_OBJECT
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public:
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explicit FGQmlPropertyNode(QObject *parent = nullptr);
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Q_PROPERTY(QVariant value READ value NOTIFY valueChangedNotify)
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Q_PROPERTY(QString path READ path WRITE setPath NOTIFY pathChanged)
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Q_PROPERTY(FGQmlPropertyNode* parentProp READ parentProp NOTIFY parentPropChanged)
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Q_PROPERTY(QQmlListProperty<FGQmlPropertyNode> childProps READ childProps NOTIFY childPropsChanged)
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Q_INVOKABLE bool set(QVariant newValue);
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// children accessor
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QVariant value() const;
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QString path() const;
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FGQmlPropertyNode* parentProp() const;
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// C++ API, not accessible from QML
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void setNode(SGPropertyNode_ptr node);
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SGPropertyNode_ptr node() const;
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QQmlListProperty<FGQmlPropertyNode> childProps()
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{
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return QQmlListProperty<FGQmlPropertyNode>(this,
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nullptr,
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nullptr,
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children_count,
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child_at,
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nullptr);
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}
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int childCount() const;
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FGQmlPropertyNode* childAt(int index) const;
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static QVariant propertyValueAsVariant(SGPropertyNode* p);
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protected:
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// SGPropertyChangeListener API
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void valueChanged(SGPropertyNode * node) override;
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void childAdded(SGPropertyNode* pr, SGPropertyNode* child) override;
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void childRemoved(SGPropertyNode* pr, SGPropertyNode* child) override;
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signals:
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void valueChangedNotify(QVariant value);
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void pathChanged(QString path);
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void parentPropChanged(FGQmlPropertyNode* parentProp);
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void childPropsChanged();
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public slots:
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void setPath(QString path);
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private:
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static int children_count(QQmlListProperty<FGQmlPropertyNode>* prop)
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{
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return static_cast<FGQmlPropertyNode*>(prop->object)->childCount();
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}
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static FGQmlPropertyNode* child_at(QQmlListProperty<FGQmlPropertyNode>* prop,
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int index)
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{
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return static_cast<FGQmlPropertyNode*>(prop->object)->childAt(index);
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}
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SGPropertyNode_ptr _prop;
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};
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#endif // FGQMLPROPERTYNODE_HXX
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