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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
#include "languageclienthoverhandler.h"
#include "client.h"
#include "dynamiccapabilities.h"
#include <texteditor/textdocument.h>
#include <texteditor/texteditor.h>
#include <utils/mimeutils.h>
#include <utils/qtcassert.h>
#include <utils/tooltip/tooltip.h>
using namespace LanguageServerProtocol;
namespace LanguageClient {
HoverHandler::HoverHandler(Client *client)
: m_client(client)
{}
HoverHandler::~HoverHandler()
{
abort();
}
void HoverHandler::abort()
{
if (m_client && m_currentRequest.has_value()) {
m_client->cancelRequest(*m_currentRequest);
m_currentRequest.reset();
}
m_response = {};
}
void HoverHandler::setPreferDiagnosticts(bool prefer)
{
m_preferDiagnostics = prefer;
}
void HoverHandler::setHelpItem(const LanguageServerProtocol::MessageId &msgId,
const Core::HelpItem &help)
{
if (msgId == m_response.id()) {
if (std::optional<HoverResult> result = m_response.result()) {
if (auto hover = std::get_if<Hover>(&(*result)))
setContent(hover->content());
}
m_response = {};
setLastHelpItemIdentified(help);
m_report(priority());
}
}
bool HoverHandler::reportDiagnostics(const QTextCursor &cursor)
{
const QList<Diagnostic> &diagnostics = m_client->diagnosticsAt(m_filePath, cursor);
if (diagnostics.isEmpty())
return false;
const QStringList messages = Utils::transform(diagnostics, &Diagnostic::message);
setToolTip(messages.join('\n'));
m_report(Priority_Diagnostic);
return true;
}
void HoverHandler::identifyMatch(TextEditor::TextEditorWidget *editorWidget,
int pos,
TextEditor::BaseHoverHandler::ReportPriority report)
{
if (m_currentRequest.has_value())
abort();
if (m_client.isNull() || !m_client->documentOpen(editorWidget->textDocument())
|| !m_client->reachable()) {
report(Priority_None);
return;
}
m_filePath = editorWidget->textDocument()->filePath();
m_response = {};
m_report = report;
QTextCursor cursor = editorWidget->textCursor();
cursor.setPosition(pos);
if (m_preferDiagnostics && reportDiagnostics(cursor))
return;
const std::optional<std::variant<bool, WorkDoneProgressOptions>> &provider
= m_client->capabilities().hoverProvider();
const bool *boolvalue = provider.has_value() ? std::get_if<bool>(&*provider) : nullptr;
bool sendMessage = provider.has_value() && (!boolvalue || *boolvalue);
if (std::optional<bool> registered = m_client->dynamicCapabilities().isRegistered(
HoverRequest::methodName)) {
sendMessage = *registered;
if (sendMessage) {
const TextDocumentRegistrationOptions option(
m_client->dynamicCapabilities().option(HoverRequest::methodName).toObject());
if (option.isValid()) {
sendMessage = option.filterApplies(editorWidget->textDocument()->filePath(),
Utils::mimeTypeForName(
editorWidget->textDocument()->mimeType()));
}
}
}
if (!sendMessage) {
report(Priority_None);
return;
}
HoverRequest request{
TextDocumentPositionParams(TextDocumentIdentifier(m_client->hostPathToServerUri(m_filePath)),
Position(cursor))};
m_currentRequest = request.id();
request.setResponseCallback(
[this, cursor](const HoverRequest::Response &response) { handleResponse(response, cursor); });
m_client->sendMessage(request);
}
void HoverHandler::handleResponse(const HoverRequest::Response &response, const QTextCursor &cursor)
{
m_currentRequest.reset();
if (std::optional<HoverRequest::Response::Error> error = response.error()) {
if (m_client)
m_client->log(*error);
}
if (std::optional<HoverResult> result = response.result()) {
if (auto hover = std::get_if<Hover>(&(*result))) {
if (m_helpItemProvider) {
m_response = response;
m_helpItemProvider(response, m_filePath);
return;
}
setContent(hover->content());
} else if (!m_preferDiagnostics && reportDiagnostics(cursor)) {
return;
}
}
m_report(priority());
}
static QString toolTipForMarkedStrings(const QList<MarkedString> &markedStrings)
{
QString tooltip;
for (const MarkedString &markedString : markedStrings) {
if (!tooltip.isEmpty())
tooltip += '\n';
if (auto string = std::get_if<QString>(&markedString))
tooltip += *string;
else if (auto string = std::get_if<MarkedLanguageString>(&markedString))
tooltip += string->value() + " [" + string->language() + ']';
}
return tooltip;
}
void HoverHandler::setContent(const HoverContent &hoverContent)
{
if (auto markupContent = std::get_if<MarkupContent>(&hoverContent))
setToolTip(markupContent->content(), markupContent->textFormat());
else if (auto markedString = std::get_if<MarkedString>(&hoverContent))
setToolTip(toolTipForMarkedStrings({*markedString}));
else if (auto markedStrings = std::get_if<QList<MarkedString>>(&hoverContent))
setToolTip(toolTipForMarkedStrings(*markedStrings));
}
} // namespace LanguageClient
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