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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing
**
** 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 The Qt Company. For licensing terms and
** conditions see http://www.qt.io/terms-conditions. For further information
** use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#ifndef CPPUSESELECTIONSUPDATER_H
#define CPPUSESELECTIONSUPDATER_H
#include <cpptools/cppsemanticinfo.h>
#include <texteditor/texteditorconstants.h>
#include <cplusplus/CppDocument.h>
#include <QFutureWatcher>
#include <QTextEdit>
#include <QTimer>
QT_BEGIN_NAMESPACE
class QTextCharFormat;
class QTextCursor;
QT_END_NAMESPACE
namespace TextEditor { class TextEditorWidget; }
namespace CppEditor {
namespace Internal {
typedef QList<QTextEdit::ExtraSelection> ExtraSelections;
typedef QList<CppTools::SemanticInfo::Use> SemanticUses;
struct UseSelectionsResult
{
CppTools::SemanticInfo::LocalUseMap localUses;
SemanticUses selectionsForLocalVariableUnderCursor;
SemanticUses selectionsForLocalUnusedVariables;
QList<int> references;
};
class CppUseSelectionsUpdater : public QObject
{
Q_OBJECT
Q_DISABLE_COPY(CppUseSelectionsUpdater)
public:
explicit CppUseSelectionsUpdater(TextEditor::TextEditorWidget *editorWidget);
enum CallType { Synchronous, Asynchronous };
public slots:
void scheduleUpdate();
void abortSchedule();
void update(CallType callType = Asynchronous);
signals:
void finished(CppTools::SemanticInfo::LocalUseMap localUses);
void selectionsForVariableUnderCursorUpdated(const QList<QTextEdit::ExtraSelection> &);
private slots:
void onFindUsesFinished();
private:
CppUseSelectionsUpdater();
bool handleMacroCase(const CPlusPlus::Document::Ptr document);
void handleSymbolCaseAsynchronously(const CPlusPlus::Document::Ptr document,
const CPlusPlus::Snapshot &snapshot);
void handleSymbolCaseSynchronously(const CPlusPlus::Document::Ptr document,
const CPlusPlus::Snapshot &snapshot);
void processSymbolCaseResults(const UseSelectionsResult &result);
ExtraSelections toExtraSelections(const SemanticUses &uses, TextEditor::TextStyle style) const;
ExtraSelections toExtraSelections(const QList<int> &references,
TextEditor::TextStyle style) const;
// Convenience
ExtraSelections currentUseSelections() const;
void updateUseSelections(const ExtraSelections &selections);
void updateUnusedSelections(const ExtraSelections &selections);
QTextCharFormat textCharFormat(TextEditor::TextStyle category) const;
QTextDocument *textDocument() const;
private:
TextEditor::TextEditorWidget *m_editorWidget;
QTimer m_timer;
CPlusPlus::Document::Ptr m_document;
QScopedPointer<QFutureWatcher<UseSelectionsResult>> m_findUsesWatcher;
int m_findUsesRevision;
int m_findUsesCursorPosition;
};
} // namespace Internal
} // namespace CppEditor
#endif // CPPUSESELECTIONSUPDATER_H
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