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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#pragma once
#include <cpptools/cppcursorinfo.h>
#include <cpptools/cppsemanticinfo.h>
#include <QFutureWatcher>
#include <QTextEdit>
#include <QTimer>
namespace TextEditor { class TextEditorWidget; }
namespace CppEditor {
namespace Internal {
class CppUseSelectionsUpdater : public QObject
{
Q_OBJECT
Q_DISABLE_COPY(CppUseSelectionsUpdater)
public:
explicit CppUseSelectionsUpdater(TextEditor::TextEditorWidget *editorWidget);
~CppUseSelectionsUpdater() override;
void scheduleUpdate();
void abortSchedule();
enum class CallType { Synchronous, Asynchronous };
enum class RunnerInfo { AlreadyUpToDate, Started, FailedToStart, Invalid }; // For async case.
RunnerInfo update(CallType callType = CallType::Asynchronous);
signals:
void finished(CppTools::SemanticInfo::LocalUseMap localUses, bool success);
void selectionsForVariableUnderCursorUpdated(const QList<QTextEdit::ExtraSelection> &);
private:
CppUseSelectionsUpdater();
bool isSameIdentifierAsBefore(const QTextCursor &cursorAtWordStart) const;
void processResults(const CppTools::CursorInfo &result);
void onFindUsesFinished();
// Convenience
using ExtraSelections = QList<QTextEdit::ExtraSelection>;
using CursorInfo = CppTools::CursorInfo;
ExtraSelections toExtraSelections(const CursorInfo::Ranges &ranges,
TextEditor::TextStyle style);
ExtraSelections currentUseSelections() const;
ExtraSelections updateUseSelections(const CursorInfo::Ranges &selections);
void updateUnusedSelections(const CursorInfo::Ranges &selections);
private:
TextEditor::TextEditorWidget *m_editorWidget;
QTimer m_timer;
QScopedPointer<QFutureWatcher<CppTools::CursorInfo>> m_runnerWatcher;
int m_runnerRevision = -1;
int m_runnerWordStartPosition = -1;
};
} // namespace Internal
} // namespace CppEditor
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