1// Copyright (C) 2016 Dmitry Shachnev <mitya57@gmail.com>
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#include "qdbusmenubar_p.h"
5#include "qdbusmenuregistrarproxy_p.h"
6
7#include <private/qguiapplication_p.h>
8#include <private/qdesktopunixservices_p.h>
9#include <qpa/qplatformintegration.h>
10
11QT_BEGIN_NAMESPACE
12
13using namespace Qt::StringLiterals;
14
15/* note: do not change these to QStringLiteral;
16 we are unloaded before QtDBus is done using the strings.
17 */
18#define REGISTRAR_SERVICE "com.canonical.AppMenu.Registrar"_L1
19#define REGISTRAR_PATH "/com/canonical/AppMenu/Registrar"_L1
20
21QDBusMenuBar::QDBusMenuBar()
22 : QPlatformMenuBar()
23 , m_menu(new QDBusPlatformMenu())
24 , m_menuAdaptor(new QDBusMenuAdaptor(m_menu))
25{
26 QDBusMenuItem::registerDBusTypes();
27 connect(sender: m_menu, signal: &QDBusPlatformMenu::propertiesUpdated,
28 context: m_menuAdaptor, slot: &QDBusMenuAdaptor::ItemsPropertiesUpdated);
29 connect(sender: m_menu, signal: &QDBusPlatformMenu::updated,
30 context: m_menuAdaptor, slot: &QDBusMenuAdaptor::LayoutUpdated);
31 connect(sender: m_menu, signal: &QDBusPlatformMenu::popupRequested,
32 context: m_menuAdaptor, slot: &QDBusMenuAdaptor::ItemActivationRequested);
33}
34
35QDBusMenuBar::~QDBusMenuBar()
36{
37 unregisterMenuBar();
38 delete m_menuAdaptor;
39 delete m_menu;
40 qDeleteAll(c: m_menuItems);
41}
42
43QDBusPlatformMenuItem *QDBusMenuBar::menuItemForMenu(QPlatformMenu *menu)
44{
45 if (!menu)
46 return nullptr;
47 quintptr tag = menu->tag();
48 const auto it = m_menuItems.constFind(key: tag);
49 if (it != m_menuItems.cend()) {
50 return *it;
51 } else {
52 QDBusPlatformMenuItem *item = new QDBusPlatformMenuItem;
53 updateMenuItem(item, menu);
54 m_menuItems.insert(key: tag, value: item);
55 return item;
56 }
57}
58
59void QDBusMenuBar::updateMenuItem(QDBusPlatformMenuItem *item, QPlatformMenu *menu)
60{
61 const QDBusPlatformMenu *ourMenu = qobject_cast<const QDBusPlatformMenu *>(object: menu);
62 item->setText(ourMenu->text());
63 item->setIcon(ourMenu->icon());
64 item->setEnabled(ourMenu->isEnabled());
65 item->setVisible(ourMenu->isVisible());
66 item->setMenu(menu);
67}
68
69void QDBusMenuBar::insertMenu(QPlatformMenu *menu, QPlatformMenu *before)
70{
71 QDBusPlatformMenuItem *menuItem = menuItemForMenu(menu);
72 QDBusPlatformMenuItem *beforeItem = menuItemForMenu(menu: before);
73 m_menu->insertMenuItem(menuItem, before: beforeItem);
74 m_menu->emitUpdated();
75}
76
77void QDBusMenuBar::removeMenu(QPlatformMenu *menu)
78{
79 QDBusPlatformMenuItem *menuItem = menuItemForMenu(menu);
80 m_menu->removeMenuItem(menuItem);
81 m_menu->emitUpdated();
82}
83
84void QDBusMenuBar::syncMenu(QPlatformMenu *menu)
85{
86 QDBusPlatformMenuItem *menuItem = menuItemForMenu(menu);
87 updateMenuItem(item: menuItem, menu);
88}
89
90void QDBusMenuBar::handleReparent(QWindow *newParentWindow)
91{
92 if (newParentWindow) {
93 unregisterMenuBar();
94 m_window = newParentWindow;
95 registerMenuBar();
96 }
97}
98
99QPlatformMenu *QDBusMenuBar::menuForTag(quintptr tag) const
100{
101 QDBusPlatformMenuItem *menuItem = m_menuItems.value(key: tag);
102 if (menuItem)
103 return const_cast<QPlatformMenu *>(menuItem->menu());
104 return nullptr;
105}
106
107QPlatformMenu *QDBusMenuBar::createMenu() const
108{
109 return new QDBusPlatformMenu;
110}
111
112void QDBusMenuBar::registerMenuBar()
113{
114 static uint menuBarId = 0;
115
116 QDBusConnection connection = QDBusConnection::sessionBus();
117 m_objectPath = QStringLiteral("/MenuBar/%1").arg(a: ++menuBarId);
118 if (!connection.registerObject(path: m_objectPath, object: m_menu))
119 return;
120
121 if (QGuiApplication::platformName() == "xcb"_L1) {
122 QDBusMenuRegistrarInterface registrar(REGISTRAR_SERVICE, REGISTRAR_PATH, connection, this);
123 QDBusPendingReply<> r = registrar.RegisterWindow(windowId: m_window->winId(), menuObjectPath: QDBusObjectPath(m_objectPath));
124 r.waitForFinished();
125 if (r.isError()) {
126 qWarning(msg: "Failed to register window menu, reason: %s (\"%s\")",
127 qUtf8Printable(r.error().name()), qUtf8Printable(r.error().message()));
128 connection.unregisterObject(path: m_objectPath);
129 return;
130 }
131 }
132
133 const auto unixServices = dynamic_cast<QDesktopUnixServices *>(
134 QGuiApplicationPrivate::platformIntegration()->services());
135 unixServices->registerDBusMenuForWindow(window: m_window, service: connection.baseService(), path: m_objectPath);
136}
137
138void QDBusMenuBar::unregisterMenuBar()
139{
140 QDBusConnection connection = QDBusConnection::sessionBus();
141
142 if (m_window) {
143 if (QGuiApplication::platformName() == "xcb"_L1) {
144 QDBusMenuRegistrarInterface registrar(REGISTRAR_SERVICE, REGISTRAR_PATH, connection, this);
145 QDBusPendingReply<> r = registrar.UnregisterWindow(windowId: m_window->winId());
146 r.waitForFinished();
147 if (r.isError())
148 qWarning(msg: "Failed to unregister window menu, reason: %s (\"%s\")",
149 qUtf8Printable(r.error().name()), qUtf8Printable(r.error().message()));
150 }
151
152 const auto unixServices = dynamic_cast<QDesktopUnixServices *>(
153 QGuiApplicationPrivate::platformIntegration()->services());
154 unixServices->unregisterDBusMenuForWindow(window: m_window);
155 }
156
157 if (!m_objectPath.isEmpty()) {
158 connection.unregisterObject(path: m_objectPath);
159 }
160}
161
162QT_END_NAMESPACE
163
164#include "moc_qdbusmenubar_p.cpp"
165

source code of qtbase/src/gui/platform/unix/dbusmenu/qdbusmenubar.cpp