Help: Add "Get Help Online" action for tasks

Useful for looking up compiler warnings on the web.

Change-Id: I1e77c3b97f7907880e2caa6d7e6070b03d846420
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

src/plugins/help/searchtaskhandler.h

@@ -0,0 +1,56 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Orgad Shaneh <orgads@gmail.com>.
+** Contact: http://www.qt-project.org/legal
+**
+** 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 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 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#ifndef HELP_SEARCHTASKHANDLER_H
+#define HELP_SEARCHTASKHANDLER_H
+
+#include <projectexplorer/itaskhandler.h>
+
+namespace Help {
+namespace Internal {
+
+class SearchTaskHandler : public ProjectExplorer::ITaskHandler
+{
+    Q_OBJECT
+
+public:
+    SearchTaskHandler() {}
+
+    bool canHandle(const ProjectExplorer::Task &task) const;
+    void handle(const ProjectExplorer::Task &task);
+    QAction *createAction(QObject *parent) const;
+
+signals:
+    void search(const QUrl &url);
+};
+
+} // namespace Internal
+} // namespace Help
+
+#endif // HELP_SEARCHTASKHANDLER_H