Allow users to suppress diagnostics.

This patch deals with what is likely the most common use case:
Filtering specific messages at a particular location. The current
granularity is essentially per-file (and per-function, where possible),
which seems more useful than taking line numbers into
account, as that would not be robust with regards to code changes elsewhere
in the file. We can fine-tune this if the need arises.

Change-Id: I4e9b2671fa199339cc3b995953d072b840cd3205
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

plugins/clangstaticanalyzer/clangstaticanalyzerprojectsettingsmanager.cpp

@@ -0,0 +1,50 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd
+** All rights reserved.
+** For any questions to The Qt Company, please use contact form at http://www.qt.io/contact-us
+**
+** This file is part of the Qt Enterprise Qt Quick Profiler Add-on.
+**
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://www.qt.io/contact-us
+**
+****************************************************************************/
+#include "clangstaticanalyzerprojectsettingsmanager.h"
+
+#include "clangstaticanalyzerprojectsettings.h"
+
+#include <projectexplorer/session.h>
+
+namespace ClangStaticAnalyzer {
+namespace Internal {
+
+ProjectSettingsManager::ProjectSettingsManager()
+{
+    QObject::connect(ProjectExplorer::SessionManager::instance(),
+            &ProjectExplorer::SessionManager::aboutToRemoveProject,
+            &ProjectSettingsManager::handleProjectToBeRemoved);
+}
+
+ProjectSettings *ProjectSettingsManager::getSettings(ProjectExplorer::Project *project)
+{
+    auto &settings = m_settings[project];
+    if (!settings)
+        settings.reset(new ProjectSettings(project));
+    return settings.data();
+}
+
+void ProjectSettingsManager::handleProjectToBeRemoved(ProjectExplorer::Project *project)
+{
+    m_settings.remove(project);
+}
+
+ProjectSettingsManager::SettingsMap ProjectSettingsManager::m_settings;
+
+} // namespace Internal
+} // namespace ClangStaticAnalyzer