Tooling: Add QML preview debug service

Task-number: QDS-181
Change-Id: I02193afb84aa111792d8bebff3bdd9b410f9db5a
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

1 files changed, 105 insertions, 0 deletions

diff --git a/src/plugins/qmltooling/qmldbg_preview/qqmlpreviewfileloader.h b/src/plugins/qmltooling/qmldbg_preview/qqmlpreviewfileloader.h
new file mode 100644
index 0000000000..de0a9cadea
--- /dev/null
+++ b/src/plugins/qmltooling/qmldbg_preview/qqmlpreviewfileloader.h
@@ -0,0 +1,105 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QML preview debug service.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QQMLPREVIEWFILELOADER_H
+#define QQMLPREVIEWFILELOADER_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qqmlpreviewblacklist.h"
+
+#include <QtCore/qobject.h>
+#include <QtCore/qthread.h>
+#include <QtCore/qmutex.h>
+#include <QtCore/qwaitcondition.h>
+#include <QtCore/qvector.h>
+#include <QtCore/qurl.h>
+#include <QtCore/qpointer.h>
+#include <QtCore/qset.h>
+
+QT_BEGIN_NAMESPACE
+
+class QQmlPreviewServiceImpl;
+class QQmlPreviewFileLoader : public QObject
+{
+    Q_OBJECT
+public:
+    enum Result {
+        File,
+        Directory,
+        Fallback,
+        Unknown
+    };
+
+    QQmlPreviewFileLoader(QQmlPreviewServiceImpl *service);
+    ~QQmlPreviewFileLoader();
+
+    Result load(const QString &file);
+    QByteArray contents();
+    QStringList entries();
+
+    void whitelist(const QUrl &url);
+    bool isBlacklisted(const QString &file);
+
+signals:
+    void request(const QString &file);
+
+private:
+    QMutex m_mutex;
+    QWaitCondition m_waitCondition;
+
+    QThread m_thread;
+    QPointer<QQmlPreviewServiceImpl> m_service;
+
+    QString m_path;
+    QByteArray m_contents;
+    QStringList m_entries;
+    Result m_result;
+
+    QQmlPreviewBlacklist m_blacklist;
+    QHash<QString, QByteArray> m_fileCache;
+    QHash<QString, QStringList> m_directoryCache;
+
+    void file(const QString &file, const QByteArray &contents);
+    void directory(const QString &file, const QStringList &entries);
+    void error(const QString &file);
+    void clearCache();
+};
+
+QT_END_NAMESPACE
+
+#endif // QQMLPREVIEWFILELOADER_H