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QodeAssist/settings/McpSettings.cpp
Petr Mironychev 620fded2e1 feat: Add mcp client hub
2026-04-23 10:18:57 +02:00

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// Copyright (C) 2024-2026 Petr Mironychev
// SPDX-License-Identifier: GPL-3.0-or-later
#include "McpSettings.hpp"
#include <coreplugin/dialogs/ioptionspage.h>
#include <coreplugin/icore.h>
#include <utils/layoutbuilder.h>
#include <QApplication>
#include <QClipboard>
#include <QDir>
#include <QDialog>
#include <QDialogButtonBox>
#include <QFontDatabase>
#include <QLabel>
#include <QMessageBox>
#include <QPlainTextEdit>
#include <QPushButton>
#include <QTabWidget>
#include <QVBoxLayout>
#include "SettingsConstants.hpp"
#include "SettingsTr.hpp"
#include "SettingsUtils.hpp"
namespace QodeAssist::Settings {
McpSettings &mcpSettings()
{
static McpSettings settings;
return settings;
}
McpSettings::McpSettings()
{
setAutoApply(false);
setDisplayName(Tr::tr("MCP"));
enableMcpServer.setSettingsKey(Constants::MCP_ENABLE_SERVER);
enableMcpServer.setLabelText(Tr::tr("Enable MCP server"));
enableMcpServer.setToolTip(
Tr::tr("Expose QodeAssist tools to external MCP clients over HTTP. "
"Which tools are visible is controlled on the client side."));
enableMcpServer.setDefaultValue(false);
mcpServerPort.setSettingsKey(Constants::MCP_SERVER_PORT);
mcpServerPort.setLabelText(Tr::tr("Server port"));
mcpServerPort.setToolTip(
Tr::tr("TCP port the MCP server listens on (localhost only). "
"Requires restart of the server after change."));
mcpServerPort.setRange(1, 65535);
mcpServerPort.setDefaultValue(3456);
enableMcpClients.setSettingsKey(Constants::MCP_ENABLE_CLIENTS);
enableMcpClients.setLabelText(Tr::tr("Connect to external MCP servers"));
enableMcpClients.setToolTip(
Tr::tr("Connect to MCP servers listed in mcp-server.json and expose their tools "
"to chat/quick-refactor/code-completion. Toggling this off disconnects all "
"currently running MCP client sessions."));
enableMcpClients.setDefaultValue(false);
mcpClientExtraPaths.setSettingsKey(Constants::MCP_CLIENT_EXTRA_PATHS);
mcpClientExtraPaths.setLabelText(Tr::tr("Extra PATH for stdio servers"));
mcpClientExtraPaths.setDisplayStyle(Utils::StringAspect::LineEditDisplay);
mcpClientExtraPaths.setToolTip(
Tr::tr("Directories to prepend to PATH when launching stdio MCP servers. "
"Useful when Qt Creator is started from the dock and doesn't see Homebrew, "
"nvm, uv, etc. Separate multiple entries with '%1'. "
"Per-server 'env' overrides in mcp-server.json still win.")
.arg(QDir::listSeparator()));
#ifdef Q_OS_MACOS
mcpClientExtraPaths.setDefaultValue(
QStringLiteral("/opt/homebrew/bin:/usr/local/bin"));
#else
mcpClientExtraPaths.setDefaultValue(QString{});
#endif
resetToDefaults.m_buttonText = Tr::tr("Reset Page to Defaults");
showConnectionInstructions.m_buttonText = Tr::tr("How to connect...");
readSettings();
setupConnections();
setLayouter([this]() {
using namespace Layouting;
return Column{
Row{Stretch{1}, resetToDefaults},
Space{8},
Group{
title(Tr::tr("Server")),
Column{
enableMcpServer,
mcpServerPort,
Row{Stretch{1}, showConnectionInstructions}}},
Space{8},
Group{
title(Tr::tr("Clients")),
Column{enableMcpClients, mcpClientExtraPaths, mcpClientsList}},
Stretch{1}};
});
}
void McpSettings::setupConnections()
{
connect(
&resetToDefaults,
&ButtonAspect::clicked,
this,
&McpSettings::resetSettingsToDefaults);
connect(
&showConnectionInstructions,
&ButtonAspect::clicked,
this,
&McpSettings::showConnectionInstructionsDialog);
auto syncServerSubgroup = [this]() {
const bool on = enableMcpServer.volatileValue();
mcpServerPort.setEnabled(on);
};
auto syncClientsSubgroup = [this]() {
const bool on = enableMcpClients.volatileValue();
mcpClientExtraPaths.setEnabled(on);
mcpClientsList.setEnabled(on);
};
connect(
&enableMcpServer,
&Utils::BoolAspect::volatileValueChanged,
this,
syncServerSubgroup);
connect(
&enableMcpClients,
&Utils::BoolAspect::volatileValueChanged,
this,
syncClientsSubgroup);
syncServerSubgroup();
syncClientsSubgroup();
}
void McpSettings::resetSettingsToDefaults()
{
QMessageBox::StandardButton reply;
reply = QMessageBox::question(
Core::ICore::dialogParent(),
Tr::tr("Reset Settings"),
Tr::tr("Are you sure you want to reset all settings to default values?"),
QMessageBox::Yes | QMessageBox::No);
if (reply == QMessageBox::Yes) {
resetAspect(enableMcpServer);
resetAspect(mcpServerPort);
resetAspect(enableMcpClients);
resetAspect(mcpClientExtraPaths);
writeSettings();
}
}
void McpSettings::showConnectionInstructionsDialog()
{
const quint16 port = static_cast<quint16>(mcpServerPort.volatileValue());
const QString serverUrl = QString("http://127.0.0.1:%1/mcp").arg(port);
const QString bridgeUrl = QStringLiteral("https://github.com/Palm1r/llmqore/releases");
const QString directJson = QString(R"({
"mcpServers": {
"qodeassist": {
"type": "sse",
"url": "%1"
}
}
})").arg(serverUrl);
const QString claudeCodeCmd
= QString("claude mcp add --transport sse qodeassist %1").arg(serverUrl);
const QString vscodeJson = QString(R"({
"servers": {
"qodeassist": {
"type": "sse",
"url": "%1"
}
}
})").arg(serverUrl);
const QString bridgeJson = QString(R"({
"port": 8808,
"host": "127.0.0.1",
"mcpServers": {
"qodeassist": {
"type": "sse",
"url": "%1"
}
}
})").arg(serverUrl);
const QString claudeDesktopJson = QStringLiteral(R"({
"mcpServers": {
"qodeassist": {
"command": "<path-to>/mcp-bridge",
"args": ["--stdio", "<path-to>/mcp-bridge.json"]
}
}
})");
auto *dialog = new QDialog(Core::ICore::dialogParent());
dialog->setAttribute(Qt::WA_DeleteOnClose);
dialog->setWindowTitle(Tr::tr("Connect to QodeAssist MCP"));
dialog->resize(640, 480);
auto *intro = new QLabel(
Tr::tr("Server URL: <code>%1</code>. If your MCP client speaks HTTP/SSE "
"natively, use the <b>Direct</b> tab. If it only speaks stdio "
"(e.g. Claude Desktop), use the <b>Bridge</b> tab.")
.arg(serverUrl),
dialog);
intro->setWordWrap(true);
intro->setTextFormat(Qt::RichText);
auto makeCodeBlock = [](QWidget *parent, const QString &text) -> QWidget * {
auto *container = new QWidget(parent);
auto *layout = new QVBoxLayout(container);
layout->setContentsMargins(0, 0, 0, 0);
auto *edit = new QPlainTextEdit(text, container);
edit->setReadOnly(true);
edit->setFont(QFontDatabase::systemFont(QFontDatabase::FixedFont));
edit->setLineWrapMode(QPlainTextEdit::NoWrap);
edit->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
edit->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
edit->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
const int lines = text.count(QLatin1Char('\n')) + 1;
const QFontMetrics fm(edit->font());
const int contentHeight = lines * fm.lineSpacing();
const int frame = 2 * edit->frameWidth();
edit->setFixedHeight(contentHeight + frame + 8);
auto *copyBtn = new QPushButton(Tr::tr("Copy"), container);
copyBtn->setAutoDefault(false);
copyBtn->setDefault(false);
QObject::connect(copyBtn, &QPushButton::clicked, container, [edit] {
QApplication::clipboard()->setText(edit->toPlainText());
});
auto *btnRow = new QHBoxLayout();
btnRow->addStretch(1);
btnRow->addWidget(copyBtn);
layout->addWidget(edit);
layout->addLayout(btnRow);
return container;
};
auto *tabs = new QTabWidget(dialog);
// Direct tab
{
auto *tab = new QWidget(tabs);
auto *layout = new QVBoxLayout(tab);
auto *hint = new QLabel(Tr::tr("<b>Claude Code</b> (CLI): run once —"), tab);
hint->setTextFormat(Qt::RichText);
layout->addWidget(hint);
layout->addWidget(makeCodeBlock(tab, claudeCodeCmd));
auto *vscodeHint = new QLabel(
Tr::tr("<b>VS Code</b>: save as <code>.vscode/mcp.json</code> in the workspace:"),
tab);
vscodeHint->setTextFormat(Qt::RichText);
vscodeHint->setWordWrap(true);
layout->addWidget(vscodeHint);
layout->addWidget(makeCodeBlock(tab, vscodeJson));
auto *jsonHint = new QLabel(
Tr::tr("Any other client that reads an <code>mcpServers</code> JSON block:"),
tab);
jsonHint->setTextFormat(Qt::RichText);
jsonHint->setWordWrap(true);
layout->addWidget(jsonHint);
layout->addWidget(makeCodeBlock(tab, directJson));
layout->addStretch(1);
tabs->addTab(tab, Tr::tr("Direct (HTTP/SSE)"));
}
// Bridge tab
{
auto *tab = new QWidget(tabs);
auto *layout = new QVBoxLayout(tab);
auto *step1 = new QLabel(
Tr::tr("<b>1.</b> Download <code>mcp-bridge</code> for your OS from "
"<a href=\"%1\">%1</a>.")
.arg(bridgeUrl),
tab);
step1->setTextFormat(Qt::RichText);
step1->setWordWrap(true);
step1->setOpenExternalLinks(true);
layout->addWidget(step1);
auto *step2 = new QLabel(
Tr::tr("<b>2.</b> Save the following as <code>mcp-bridge.json</code>:"), tab);
step2->setTextFormat(Qt::RichText);
layout->addWidget(step2);
layout->addWidget(makeCodeBlock(tab, bridgeJson));
auto *step3 = new QLabel(
Tr::tr("<b>3.</b> Point the stdio-only client at the bridge. "
"Example for <code>claude_desktop_config.json</code>:"),
tab);
step3->setTextFormat(Qt::RichText);
step3->setWordWrap(true);
layout->addWidget(step3);
layout->addWidget(makeCodeBlock(tab, claudeDesktopJson));
layout->addStretch(1);
tabs->addTab(tab, Tr::tr("Bridge (stdio)"));
}
auto *buttons = new QDialogButtonBox(QDialogButtonBox::Close, dialog);
QObject::connect(buttons, &QDialogButtonBox::rejected, dialog, &QDialog::close);
auto *layout = new QVBoxLayout(dialog);
layout->addWidget(intro);
layout->addWidget(tabs, 1);
layout->addWidget(buttons);
dialog->show();
}
class McpSettingsPage : public Core::IOptionsPage
{
public:
McpSettingsPage()
{
setId(Constants::QODE_ASSIST_MCP_SETTINGS_PAGE_ID);
setDisplayName(Tr::tr("MCP"));
setCategory(Constants::QODE_ASSIST_GENERAL_OPTIONS_CATEGORY);
setSettingsProvider([] { return &mcpSettings(); });
}
};
const McpSettingsPage mcpSettingsPage;
} // namespace QodeAssist::Settings
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