Add QML download API

This patch exposes downloadStarted and downloadFinished
signals on the WebEngineProfile to notify about downloads.
The WebEngineDownloadItem exposes a subset of Chromium's
content::DownloadItem functionality.
For now we expose minimal requirements to be able to control
downloads in QML but this can be extended in the future.
This patch also adds a DownloadView to quicktestbrowser
to demonstrate the usage of the new API.

[ChangeLog][QtWebEngineQML] Add QtQuick download API

Change-Id: I8d8f0daf02c4e0151000427fc2a4b37d28b9db52
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>

1 files changed, 63 insertions, 0 deletions

diff --git a/src/core/browser_context_adapter_client.h b/src/core/browser_context_adapter_client.h
new file mode 100644
index 000000000..2b6b4f434
--- /dev/null
+++ b/src/core/browser_context_adapter_client.h
@@ -0,0 +1,63 @@
+  /****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtWebEngine module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef BROWSER_CONTEXT_ADAPTER_CLIENT_H
+#define BROWSER_CONTEXT_ADAPTER_CLIENT_H
+
+#include "qtwebenginecoreglobal.h"
+#include <QString>
+
+class QWEBENGINE_EXPORT BrowserContextAdapterClient
+{
+public:
+    // Keep in sync with content::DownloadItem::DownloadState
+    enum DownloadState {
+        // Download is actively progressing.
+        DownloadInProgress = 0,
+        // Download is completely finished.
+        DownloadCompleted,
+        // Download has been cancelled.
+        DownloadCancelled,
+        // This state indicates that the download has been interrupted.
+        DownloadInterrupted
+    };
+    virtual ~BrowserContextAdapterClient() { }
+
+    virtual void downloadRequested(quint32 downloadId, QString &downloadPath, bool &cancelled) = 0;
+    virtual void downloadUpdated(quint32 downloadId, int downloadState, int percentComplete) = 0;
+};
+
+#endif // BROWSER_CONTEXT_ADAPTER_CLIENT_H