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// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#pragma once
#include "languageclient_global.h"
#include <languageserverprotocol/languagefeatures.h>
#include <texteditor/codeassist/completionassistprovider.h>
#include <texteditor/codeassist/iassistprocessor.h>
#include <texteditor/codeassist/ifunctionhintproposalmodel.h>
#include <QPointer>
#include <optional>
namespace TextEditor { class IAssistProposal; }
namespace LanguageClient {
class Client;
class LANGUAGECLIENT_EXPORT FunctionHintAssistProvider : public TextEditor::CompletionAssistProvider
{
Q_OBJECT
public:
explicit FunctionHintAssistProvider(Client *client);
TextEditor::IAssistProcessor *createProcessor(const TextEditor::AssistInterface *) const override;
int activationCharSequenceLength() const override;
bool isActivationCharSequence(const QString &sequence) const override;
bool isContinuationChar(const QChar &c) const override;
void setTriggerCharacters(const std::optional<QList<QString>> &triggerChars);
private:
QList<QString> m_triggerChars;
int m_activationCharSequenceLength = 0;
Client *m_client = nullptr; // not owned
};
class LANGUAGECLIENT_EXPORT FunctionHintProcessor : public TextEditor::IAssistProcessor
{
public:
explicit FunctionHintProcessor(Client *client, int basePosition = -1);
TextEditor::IAssistProposal *perform() override;
bool running() override { return m_currentRequest.has_value(); }
bool needsRestart() const override { return true; }
void cancel() override;
private:
virtual TextEditor::IFunctionHintProposalModel *createModel(
const LanguageServerProtocol::SignatureHelp &signatureHelp) const;
void handleSignatureResponse(
const LanguageServerProtocol::SignatureHelpRequest::Response &response);
QPointer<Client> m_client;
std::optional<LanguageServerProtocol::MessageId> m_currentRequest;
int m_pos = -1;
};
class LANGUAGECLIENT_EXPORT FunctionHintProposalModel
: public TextEditor::IFunctionHintProposalModel
{
public:
explicit FunctionHintProposalModel(LanguageServerProtocol::SignatureHelp signature)
: m_sigis(signature)
{}
void reset() override {}
int size() const override { return m_sigis.signatures().size(); }
QString text(int index) const override;
int activeArgument(const QString &/*prefix*/) const override
{ return m_sigis.activeParameter().value_or(0); }
protected:
LanguageServerProtocol::SignatureHelp m_sigis;
};
} // namespace LanguageClient
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