C++: Moved completion/highlighting into the model manager.

This way the editor does not need to know all the details of
instantiating or maintaining classes for highlighting and/or completion,
it can just ask the model manager. The change also enables different
highlighting- or completion-engines without changes to the cppeditor.

Change-Id: I8000d9d9fe446b292defddb2295493cf77d0f14a
Reviewed-by: Leandro Melo <leandro.melo@nokia.com>

src/plugins/cpptools/cppcompletionsupport.cpp

@@ -0,0 +1,72 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+**
+** GNU Lesser General Public License Usage
+**
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** Other Usage
+**
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**************************************************************************/
+
+#include "cppcompletionassist.h"
+#include "cppcompletionsupport.h"
+#include "cppmodelmanager.h"
+#include "cpptoolseditorsupport.h"
+
+#include <coreplugin/ifile.h>
+#include <projectexplorer/project.h>
+#include <texteditor/codeassist/iassistinterface.h>
+
+using namespace CPlusPlus;
+using namespace CppTools;
+using namespace CppTools::Internal;
+
+CppCompletionSupport::CppCompletionSupport(CppEditorSupport *editorSupport)
+    : m_editorSupport(editorSupport)
+{
+    Q_ASSERT(editorSupport);
+}
+
+TextEditor::IAssistInterface *CppCompletionSupport::createAssistInterface(ProjectExplorer::Project *project,
+                                                                          QTextDocument *document,
+                                                                          int position,
+                                                                          TextEditor::AssistReason reason) const
+{
+    CppModelManagerInterface *modelManager = CppModelManagerInterface::instance();
+    QStringList includePaths;
+    QStringList frameworkPaths;
+    if (project) {
+        includePaths = modelManager->projectInfo(project).includePaths;
+        frameworkPaths = modelManager->projectInfo(project).frameworkPaths;
+    }
+    return new CppTools::Internal::CppCompletionAssistInterface(
+                document,
+                position,
+                m_editorSupport->textEditor()->file(),
+                reason,
+                modelManager->snapshot(),
+                includePaths,
+                frameworkPaths);
+}