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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#pragma once
#include "cppcursorinfo.h"
#include "cppsemanticinfo.h"
#include <QFutureWatcher>
#include <QTextEdit>
#include <QTimer>
namespace CppEditor {
class CppEditorWidget;
namespace Internal {
class CppUseSelectionsUpdater : public QObject
{
Q_OBJECT
Q_DISABLE_COPY(CppUseSelectionsUpdater)
public:
explicit CppUseSelectionsUpdater(CppEditorWidget *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(SemanticInfo::LocalUseMap localUses, bool success);
void selectionsForVariableUnderCursorUpdated(const QList<QTextEdit::ExtraSelection> &);
private:
CppUseSelectionsUpdater();
bool isSameIdentifierAsBefore(const QTextCursor &cursorAtWordStart) const;
void processResults(const CursorInfo &result);
void onFindUsesFinished();
// Convenience
using ExtraSelections = QList<QTextEdit::ExtraSelection>;
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:
CppEditorWidget * const m_editorWidget;
QTimer m_timer;
std::unique_ptr<QFutureWatcher<CursorInfo>> m_runnerWatcher;
int m_runnerRevision = -1;
int m_runnerWordStartPosition = -1;
bool m_updateSelections = true;
};
} // namespace Internal
} // namespace CppEditor
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