qt-creator/src/plugins/languageclient/languageclientfunctionhint.h

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#pragma once

#include <texteditor/codeassist/completionassistprovider.h>
#include <utils/optional.h>

namespace TextEditor { class IAssistProposal; }

namespace LanguageClient {

class Client;

using ProposalHandler = std::function<void(TextEditor::IAssistProposal *)>;

class FunctionHintAssistProvider : public TextEditor::CompletionAssistProvider
{
    Q_OBJECT

public:
    explicit FunctionHintAssistProvider(Client *client);

    TextEditor::IAssistProcessor *createProcessor(const TextEditor::AssistInterface *) const override;
    RunType runType() const override;

    int activationCharSequenceLength() const override;
    bool isActivationCharSequence(const QString &sequence) const override;
    bool isContinuationChar(const QChar &c) const override;

    void setTriggerCharacters(const Utils::optional<QList<QString>> &triggerChars);

    void setProposalHandler(const ProposalHandler &handler) { m_proposalHandler = handler; }

private:
    QList<QString> m_triggerChars;
    ProposalHandler m_proposalHandler;
    int m_activationCharSequenceLength = 0;
    Client *m_client = nullptr; // not owned
};

} // namespace LanguageClient