QmlDesigner: Add ItemFilterModel

This exposes a model to QML that allows
to get a list of all ids of items of a specific type.
This allows implementing a combobox that can e.g. set
the id of any image element in the file.

Change-Id: Ibc825cb5a66c951d29df12676f9433c9232fd8af
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>
Reviewed-by: Henning Gründl <henning.gruendl@qt.io>

1 files changed, 69 insertions, 0 deletions

diff --git a/src/plugins/qmldesigner/components/propertyeditor/itemfiltermodel.h b/src/plugins/qmldesigner/components/propertyeditor/itemfiltermodel.h
new file mode 100644
index 0000000000..032bd2baff
--- /dev/null
+++ b/src/plugins/qmldesigner/components/propertyeditor/itemfiltermodel.h
@@ -0,0 +1,69 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** 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.
+**
+****************************************************************************/
+
+#pragma once
+
+#include <qmlitemnode.h>
+
+#include <QDir>
+#include <QObject>
+#include <QStringList>
+#include <QUrl>
+#include <QtQml>
+
+class ItemFilterModel : public QObject
+{
+    Q_OBJECT
+
+    Q_PROPERTY(QString typeFilter READ typeFilter WRITE setTypeFilter)
+    Q_PROPERTY(QVariant modelNodeBackendProperty READ modelNodeBackend WRITE setModelNodeBackend NOTIFY modelNodeBackendChanged)
+    Q_PROPERTY(QStringList itemModel READ itemModel NOTIFY itemModelChanged)
+
+public:
+    explicit ItemFilterModel(QObject *parent = nullptr);
+
+    void setModelNodeBackend(const QVariant &modelNodeBackend);
+    void setTypeFilter(const QString &typeFilter);
+    QString typeFilter() const;
+    void setupModel();
+    QStringList itemModel() const;
+
+    static void registerDeclarativeType();
+
+signals:
+    void modelNodeBackendChanged();
+    void itemModelChanged();
+
+private:
+    QVariant modelNodeBackend() const;
+
+private:
+    QString m_typeFilter;
+    bool m_lock;
+    QStringList m_model;
+    QmlDesigner::ModelNode m_modelNode;
+};
+
+QML_DECLARE_TYPE(ItemFilterModel)