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/****************************************************************************
**
** Copyright (C) 2018 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 "languageclient_global.h"
#include <languageserverprotocol/completion.h>
#include <texteditor/codeassist/assistproposaliteminterface.h>
#include <texteditor/codeassist/completionassistprovider.h>
#include <texteditor/codeassist/iassistprocessor.h>
#include <utils/optional.h>
#include <QPointer>
#include <functional>
namespace TextEditor {
class IAssistProposal;
class TextDocumentManipulatorInterface;
}
namespace LanguageClient {
class Client;
class LANGUAGECLIENT_EXPORT LanguageClientCompletionAssistProvider
: public TextEditor::CompletionAssistProvider
{
Q_OBJECT
public:
LanguageClientCompletionAssistProvider(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 &) const override { return true; }
void setTriggerCharacters(const Utils::optional<QList<QString>> triggerChars);
void setSnippetsGroup(const QString &group) { m_snippetsGroup = group; }
protected:
Client *client() const { return m_client; }
private:
QList<QString> m_triggerChars;
QString m_snippetsGroup;
int m_activationCharSequenceLength = 0;
Client *m_client = nullptr; // not owned
};
class LANGUAGECLIENT_EXPORT LanguageClientCompletionAssistProcessor
: public TextEditor::IAssistProcessor
{
public:
LanguageClientCompletionAssistProcessor(Client *client, const QString &snippetsGroup);
~LanguageClientCompletionAssistProcessor() override;
TextEditor::IAssistProposal *perform(const TextEditor::AssistInterface *interface) override;
bool running() override;
bool needsRestart() const override { return true; }
void cancel() override;
protected:
QTextDocument *document() const;
Utils::FilePath filePath() const { return m_filePath; }
int basePos() const { return m_basePos; }
virtual QList<TextEditor::AssistProposalItemInterface *> generateCompletionItems(
const QList<LanguageServerProtocol::CompletionItem> &items) const;
private:
void handleCompletionResponse(const LanguageServerProtocol::CompletionRequest::Response &response);
QPointer<QTextDocument> m_document;
Utils::FilePath m_filePath;
QPointer<Client> m_client;
Utils::optional<LanguageServerProtocol::MessageId> m_currentRequest;
QMetaObject::Connection m_postponedUpdateConnection;
const QString m_snippetsGroup;
int m_pos = -1;
int m_basePos = -1;
};
class LANGUAGECLIENT_EXPORT LanguageClientCompletionItem
: public TextEditor::AssistProposalItemInterface
{
public:
LanguageClientCompletionItem(LanguageServerProtocol::CompletionItem item);
// AssistProposalItemInterface interface
QString text() const override;
QString filterText() const override;
bool implicitlyApplies() const override;
bool prematurelyApplies(const QChar &typedCharacter) const override;
void apply(TextEditor::TextDocumentManipulatorInterface &manipulator,
int basePosition) const override;
QIcon icon() const override;
QString detail() const override;
bool isSnippet() const override;
bool isValid() const override;
quint64 hash() const override;
LanguageServerProtocol::CompletionItem item() const;
QChar triggeredCommitCharacter() const;
const QString &sortText() const;
bool hasSortText() const;
bool operator <(const LanguageClientCompletionItem &other) const;
bool isPerfectMatch(int pos, QTextDocument *doc) const;
bool isDeprecated() const;
private:
LanguageServerProtocol::CompletionItem m_item;
mutable QChar m_triggeredCommitCharacter;
mutable QString m_sortText;
mutable QString m_filterText;
};
} // namespace LanguageClient
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