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path: root/src/qt/macdockiconhandler.mm
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// Copyright (c) 2011-2018 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include "macdockiconhandler.h"

#include <QMenu>
#include <QWidget>

#undef slots
#include <Cocoa/Cocoa.h>
#include <objc/objc.h>
#include <objc/message.h>

static MacDockIconHandler *s_instance = nullptr;

bool dockClickHandler(id self,SEL _cmd,...) {
    Q_UNUSED(self)
    Q_UNUSED(_cmd)

    Q_EMIT s_instance->dockIconClicked();

    // Return NO (false) to suppress the default macOS actions
    return false;
}

void setupDockClickHandler() {
    id app = objc_msgSend((id)objc_getClass("NSApplication"), sel_registerName("sharedApplication"));
    id delegate = objc_msgSend(app, sel_registerName("delegate"));
    Class delClass = (Class)objc_msgSend(delegate, sel_registerName("class"));
    SEL shouldHandle = sel_registerName("applicationShouldHandleReopen:hasVisibleWindows:");
    class_replaceMethod(delClass, shouldHandle, (IMP)dockClickHandler, "B@:");
}


MacDockIconHandler::MacDockIconHandler() : QObject()
{
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

    setupDockClickHandler();
    this->m_dummyWidget = new QWidget();
    this->m_dockMenu = new QMenu(this->m_dummyWidget);
#if QT_VERSION >= 0x050200
    this->m_dockMenu->setAsDockMenu();
#endif
    [pool release];
}

MacDockIconHandler::~MacDockIconHandler()
{
    delete this->m_dummyWidget;
}

QMenu *MacDockIconHandler::dockMenu()
{
    return this->m_dockMenu;
}

MacDockIconHandler *MacDockIconHandler::instance()
{
    if (!s_instance)
        s_instance = new MacDockIconHandler();
    return s_instance;
}

void MacDockIconHandler::cleanup()
{
    delete s_instance;
}