summaryrefslogtreecommitdiffstats
path: root/src/plugins/platforms/cocoa/qcocoamenubar.mm
blob: 82c405baa6670b18d6af72459a72b6c1a1a607bd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
/****************************************************************************
**
** Copyright (C) 2012 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author James Turner <james.turner@kdab.com>
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** 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-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include <AppKit/AppKit.h>

#include "qcocoamenubar.h"
#include "qcocoawindow.h"
#include "qcocoamenuloader.h"
#include "qcocoaapplication.h" // for custom application category
#include "qcocoaapplicationdelegate.h"

#include <QtGui/QGuiApplication>
#include <QtCore/QDebug>

QT_BEGIN_NAMESPACE

static QList<QCocoaMenuBar*> static_menubars;

QCocoaMenuBar::QCocoaMenuBar()
{
    static_menubars.append(this);

    m_nativeMenu = [[NSMenu alloc] init];
#ifdef QT_COCOA_ENABLE_MENU_DEBUG
    qDebug() << "Construct QCocoaMenuBar" << this << m_nativeMenu;
#endif
}

QCocoaMenuBar::~QCocoaMenuBar()
{
#ifdef QT_COCOA_ENABLE_MENU_DEBUG
    qDebug() << "~QCocoaMenuBar" << this;
#endif
    foreach (QCocoaMenu *menu, m_menus) {
        if (!menu)
            continue;
        NSMenuItem *item = nativeItemForMenu(menu);
        if (menu->attachedItem() == item)
            menu->setAttachedItem(nil);
    }

    [m_nativeMenu release];
    static_menubars.removeOne(this);

    if (!m_window.isNull() && m_window->menubar() == this) {
        m_window->setMenubar(0);

        // Delete the children first so they do not cause
        // the native menu items to be hidden after
        // the menu bar was updated
        qDeleteAll(children());
        updateMenuBarImmediately();
    }
}

bool QCocoaMenuBar::needsImmediateUpdate()
{
    if (!m_window.isNull()) {
        if (m_window->window()->isActive())
            return true;
    } else {
        // Only update if the focus/active window has no
        // menubar, which means it'll be using this menubar.
        // This is to avoid a modification in a parentless
        // menubar to affect a window-assigned menubar.
        QWindow *fw = QGuiApplication::focusWindow();
        if (!fw) {
            // Same if there's no focus window, BTW.
            return true;
        } else {
            QCocoaWindow *cw = static_cast<QCocoaWindow *>(fw->handle());
            if (cw && !cw->menubar())
                return true;
        }
    }

    // Either the menubar is attached to a non-active window,
    // or the application's focus window has its own menubar
    // (which is different from this one)
    return false;
}

void QCocoaMenuBar::insertMenu(QPlatformMenu *platformMenu, QPlatformMenu *before)
{
    QCocoaMenu *menu = static_cast<QCocoaMenu *>(platformMenu);
    QCocoaMenu *beforeMenu = static_cast<QCocoaMenu *>(before);
#ifdef QT_COCOA_ENABLE_MENU_DEBUG
    qDebug() << "QCocoaMenuBar" << this << "insertMenu" << menu << "before" << before;
#endif

    if (m_menus.contains(QPointer<QCocoaMenu>(menu))) {
        qWarning("This menu already belongs to the menubar, remove it first");
        return;
    }

    if (beforeMenu && !m_menus.contains(QPointer<QCocoaMenu>(beforeMenu))) {
        qWarning("The before menu does not belong to the menubar");
        return;
    }

    int insertionIndex = beforeMenu ? m_menus.indexOf(beforeMenu) : m_menus.size();
    m_menus.insert(insertionIndex, menu);

    {
        QMacAutoReleasePool pool;
        NSMenuItem *item = [[[NSMenuItem alloc] init] autorelease];
        item.tag = reinterpret_cast<NSInteger>(menu);

        if (beforeMenu) {
            // QMenuBar::toNSMenu() exposes the native menubar and
            // the user could have inserted its own items in there.
            // Same remark applies to removeMenu().
            NSMenuItem *beforeItem = nativeItemForMenu(beforeMenu);
            NSInteger nativeIndex = [m_nativeMenu indexOfItem:beforeItem];
            [m_nativeMenu insertItem:item atIndex:nativeIndex];
        } else {
            [m_nativeMenu addItem:item];
        }
    }

    syncMenu(menu);

    if (needsImmediateUpdate())
        updateMenuBarImmediately();
}

void QCocoaMenuBar::removeMenu(QPlatformMenu *platformMenu)
{
    QCocoaMenu *menu = static_cast<QCocoaMenu *>(platformMenu);
    if (!m_menus.contains(menu)) {
        qWarning("Trying to remove a menu that does not belong to the menubar");
        return;
    }

    NSMenuItem *item = nativeItemForMenu(menu);
    if (menu->attachedItem() == item)
        menu->setAttachedItem(nil);
    m_menus.removeOne(menu);

    QMacAutoReleasePool pool;

    // See remark in insertMenu().
    NSInteger nativeIndex = [m_nativeMenu indexOfItem:item];
    [m_nativeMenu removeItemAtIndex:nativeIndex];
}

void QCocoaMenuBar::syncMenu(QPlatformMenu *menu)
{
    QMacAutoReleasePool pool;

    QCocoaMenu *cocoaMenu = static_cast<QCocoaMenu *>(menu);
    Q_FOREACH (QCocoaMenuItem *item, cocoaMenu->items())
        cocoaMenu->syncMenuItem(item);

    BOOL shouldHide = YES;
    if (cocoaMenu->isVisible()) {
        // If the NSMenu has no visble items, or only separators, we should hide it
        // on the menubar. This can happen after syncing the menu items since they
        // can be moved to other menus.
        for (NSMenuItem *item in [cocoaMenu->nsMenu() itemArray])
            if (![item isSeparatorItem] && ![item isHidden]) {
                shouldHide = NO;
                break;
            }
    }

    if (NSMenuItem *attachedItem = cocoaMenu->attachedItem()) {
        // Non-nil attached item means the item's submenu is set
        attachedItem.title = cocoaMenu->nsMenu().title;
        attachedItem.hidden = shouldHide;
    }
}

NSMenuItem *QCocoaMenuBar::nativeItemForMenu(QCocoaMenu *menu) const
{
    if (!menu)
        return nil;

    return [m_nativeMenu itemWithTag:reinterpret_cast<NSInteger>(menu)];
}

void QCocoaMenuBar::handleReparent(QWindow *newParentWindow)
{
#ifdef QT_COCOA_ENABLE_MENU_DEBUG
    qDebug() << "QCocoaMenuBar" << this << "handleReparent" << newParentWindow;
#endif

    if (!m_window.isNull())
        m_window->setMenubar(nullptr);

    if (newParentWindow == nullptr) {
        m_window.clear();
    } else {
        newParentWindow->create();
        m_window = static_cast<QCocoaWindow*>(newParentWindow->handle());
        m_window->setMenubar(this);
    }

    updateMenuBarImmediately();
}

QCocoaWindow *QCocoaMenuBar::findWindowForMenubar()
{
    if (qApp->focusWindow())
        return static_cast<QCocoaWindow*>(qApp->focusWindow()->handle());

    return NULL;
}

QCocoaMenuBar *QCocoaMenuBar::findGlobalMenubar()
{
    foreach (QCocoaMenuBar *mb, static_menubars) {
        if (mb->m_window.isNull())
            return mb;
    }

    return NULL;
}

void QCocoaMenuBar::redirectKnownMenuItemsToFirstResponder()
{
    // QTBUG-17291: http://forums.macrumors.com/showthread.php?t=1249452
    // When a dialog is opened, shortcuts for actions inside the dialog (cut, paste, ...)
    // continue to go through the same menu items which claimed those shortcuts.
    // They are not keystrokes which we can intercept in any other way; the OS intercepts them.
    // The menu items had to be created by the application.  That's why we need roles
    // to identify those "special" menu items which can be useful even when non-Qt
    // native widgets are in focus.  When the native widget is focused it will be the
    // first responder, so the menu item needs to have its target be the first responder;
    // this is done by setting it to nil.

    // This function will find all menu items on all menus which have
    // "special" roles, set the target and also set the standard actions which
    // apply to those roles.  But afterwards it is necessary to call
    // resetKnownMenuItemsToQt() to put back the target and action so that
    // those menu items will go back to invoking their associated QActions.
    foreach (QCocoaMenuBar *mb, static_menubars)
        foreach (QCocoaMenu *m, mb->m_menus)
            foreach (QCocoaMenuItem *i, m->items()) {
                bool known = true;
                switch (i->effectiveRole()) {
                case QPlatformMenuItem::CutRole:
                    [i->nsItem() setAction:@selector(cut:)];
                    break;
                case QPlatformMenuItem::CopyRole:
                    [i->nsItem() setAction:@selector(copy:)];
                    break;
                case QPlatformMenuItem::PasteRole:
                    [i->nsItem() setAction:@selector(paste:)];
                    break;
                case QPlatformMenuItem::SelectAllRole:
                    [i->nsItem() setAction:@selector(selectAll:)];
                    break;
                // We may discover later that there are other roles/actions which
                // are meaningful to standard native widgets; they can be added.
                default:
                    known = false;
                    break;
                }
                if (known)
                    [i->nsItem() setTarget:nil];
            }
}

void QCocoaMenuBar::resetKnownMenuItemsToQt()
{
    // Undo the effect of redirectKnownMenuItemsToFirstResponder():
    // set the menu items' actions to itemFired and their targets to
    // the QCocoaMenuDelegate.
    updateMenuBarImmediately();
}

void QCocoaMenuBar::updateMenuBarImmediately()
{
    QMacAutoReleasePool pool;
    QCocoaMenuBar *mb = findGlobalMenubar();
    QCocoaWindow *cw = findWindowForMenubar();

    QWindow *win = cw ? cw->window() : 0;
    if (win && (win->flags() & Qt::Popup) == Qt::Popup) {
        // context menus, comboboxes, etc. don't need to update the menubar,
        // but if an application has only Qt::Tool window(s) on start,
        // we still have to update the menubar.
        if ((win->flags() & Qt::WindowType_Mask) != Qt::Tool)
            return;
        typedef QT_MANGLE_NAMESPACE(QCocoaApplicationDelegate) AppDelegate;
        NSApplication *app = [NSApplication sharedApplication];
        if (![app.delegate isKindOfClass:[AppDelegate class]])
            return;
        // We apply this logic _only_ during the startup.
        AppDelegate *appDelegate = app.delegate;
        if (!appDelegate.inLaunch)
            return;
    }

    if (cw && cw->menubar())
        mb = cw->menubar();

    if (!mb)
        return;

#ifdef QT_COCOA_ENABLE_MENU_DEBUG
    qDebug() << "QCocoaMenuBar" << "updateMenuBarImmediately" << cw;
#endif
    bool disableForModal = mb->shouldDisable(cw);

    foreach (QCocoaMenu *menu, mb->m_menus) {
        if (!menu)
            continue;
        NSMenuItem *item = mb->nativeItemForMenu(menu);
        menu->setAttachedItem(item);
        menu->setMenuParent(mb);
        // force a sync?
        mb->syncMenu(menu);
        menu->propagateEnabledState(!disableForModal);
    }

    QCocoaMenuLoader *loader = [QCocoaMenuLoader sharedMenuLoader];
    [loader ensureAppMenuInMenu:mb->nsMenu()];

    NSMutableSet *mergedItems = [[NSMutableSet setWithCapacity:0] retain];
    foreach (QCocoaMenuItem *m, mb->merged()) {
        [mergedItems addObject:m->nsItem()];
        m->syncMerged();
    }

    // hide+disable all mergeable items we're not currently using
    for (NSMenuItem *mergeable in [loader mergeable]) {
        if (![mergedItems containsObject:mergeable]) {
            [mergeable setHidden:YES];
            [mergeable setEnabled:NO];
        }
    }

    [mergedItems release];
    [NSApp setMainMenu:mb->nsMenu()];
    [loader qtTranslateApplicationMenu];
}

QList<QCocoaMenuItem*> QCocoaMenuBar::merged() const
{
    QList<QCocoaMenuItem*> r;
    foreach (QCocoaMenu* menu, m_menus)
        r.append(menu->merged());

    return r;
}

bool QCocoaMenuBar::shouldDisable(QCocoaWindow *active) const
{
    if (active && (active->window()->modality() == Qt::NonModal))
        return false;

    if (m_window == active) {
        // modal window owns us, we should be enabled!
        return false;
    }

    QWindowList topWindows(qApp->topLevelWindows());
    // When there is an application modal window on screen, the entries of
    // the menubar should be disabled. The exception in Qt is that if the
    // modal window is the only window on screen, then we enable the menu bar.
    foreach (QWindow *w, topWindows) {
        if (w->isVisible() && w->modality() == Qt::ApplicationModal) {
            // check for other visible windows
            foreach (QWindow *other, topWindows) {
                if ((w != other) && (other->isVisible())) {
                    // INVARIANT: we found another visible window
                    // on screen other than our modalWidget. We therefore
                    // disable the menu bar to follow normal modality logic:
                    return true;
                }
            }

            // INVARIANT: We have only one window on screen that happends
            // to be application modal. We choose to enable the menu bar
            // in that case to e.g. enable the quit menu item.
            return false;
        }
    }

    return true;
}

QPlatformMenu *QCocoaMenuBar::menuForTag(quintptr tag) const
{
    foreach (QCocoaMenu *menu, m_menus) {
        if (menu->tag() ==  tag)
            return menu;
    }

    return 0;
}

NSMenuItem *QCocoaMenuBar::itemForRole(QPlatformMenuItem::MenuRole r)
{
    foreach (QCocoaMenu *m, m_menus)
        foreach (QCocoaMenuItem *i, m->items())
            if (i->effectiveRole() == r)
                return i->nsItem();
    return Q_NULLPTR;
}

QT_END_NAMESPACE