Cocoa: QMenu refactor.

This change prepares for enabling native menus
on OS X.

Move code from src/widgets to cocoa:
- qcocoaapplicaiton
- qcocoaapplicaitondelegate
- qcocoamenuloader
- qcocoamenu
- qmenu_mac
- misc helpers to qcocoahelpers

Create a QNSApplication and
QCocoaApplicationDelegate at application startup.

New Lighthouse API:
- class QPlatformMenu
- class QPlatformMenuBar
- QPlatformIntegration::createPlatformMenu()
- QPlatformIntegration::createPlatformMenuBar()

Platforms that wants a native menu integration
subclasses QPlatformMenu[|Bar] and implements the
create function. The default implementation returns
0, which causes QMenu to use the standard Qt
menus.

This API is based on the current native menu
abstraction that Mac, Wince and S60 uses in Qt 4.
The main difference is that the platform classes are
proper standalone classes and not #ifdeffed into
QMenuPrivate.

Change-Id: I3da41f80b0ae903a476937908b1f9b88014b7954
Reviewed-on: http://codereview.qt.nokia.com/4068
Reviewed-by: Morten Johan Sørvig <morten.sorvig@nokia.com>

1 files changed, 227 insertions, 0 deletions

diff --git a/src/plugins/platforms/cocoa/qcocoaapplication.mm b/src/plugins/platforms/cocoa/qcocoaapplication.mm
new file mode 100644
index 0000000000..2adf6a57f0
--- /dev/null
+++ b/src/plugins/platforms/cocoa/qcocoaapplication.mm
@@ -0,0 +1,227 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/****************************************************************************
+**
+** Copyright (c) 2007-2008, Apple, Inc.
+**
+** All rights reserved.
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are met:
+**
+**   * Redistributions of source code must retain the above copyright notice,
+**     this list of conditions and the following disclaimer.
+**
+**   * Redistributions in binary form must reproduce the above copyright notice,
+**     this list of conditions and the following disclaimer in the documentation
+**     and/or other materials provided with the distribution.
+**
+**   * Neither the name of Apple, Inc. nor the names of its contributors
+**     may be used to endorse or promote products derived from this software
+**     without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+** PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+** LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+** NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+**
+****************************************************************************/
+
+#include <qcocoaapplication.h>
+
+#include <qcocoaapplicationdelegate.h>
+#include <qcocoahelpers.h>
+#include <qguiapplication.h>
+#include <qdebug.h>
+
+QT_USE_NAMESPACE
+
+@implementation NSApplication (QT_MANGLE_NAMESPACE(QApplicationIntegration))
+
+- (void)QT_MANGLE_NAMESPACE(qt_setDockMenu):(NSMenu *)newMenu
+{
+    [[QT_MANGLE_NAMESPACE(QCocoaApplicationDelegate) sharedDelegate] setDockMenu:newMenu];
+}
+
+- (QApplicationPrivate *)QT_MANGLE_NAMESPACE(qt_qappPrivate)
+{
+    return [[QT_MANGLE_NAMESPACE(QCocoaApplicationDelegate) sharedDelegate] qAppPrivate];
+}
+
+- (QT_MANGLE_NAMESPACE(QCocoaMenuLoader) *)QT_MANGLE_NAMESPACE(qt_qcocoamenuLoader)
+{
+    return [[QT_MANGLE_NAMESPACE(QCocoaApplicationDelegate) sharedDelegate] menuLoader];
+}
+
+- (int)QT_MANGLE_NAMESPACE(qt_validModesForFontPanel):(NSFontPanel *)fontPanel
+{
+    Q_UNUSED(fontPanel);
+    // only display those things that QFont can handle
+    return NSFontPanelFaceModeMask
+            | NSFontPanelSizeModeMask
+            | NSFontPanelCollectionModeMask
+            | NSFontPanelUnderlineEffectModeMask
+            | NSFontPanelStrikethroughEffectModeMask;
+}
+
+- (void)qt_sendPostedMessage:(NSEvent *)event
+{
+/*
+    // WARNING: data1 and data2 is truncated to from 64-bit to 32-bit on OS 10.5!
+    // That is why we need to split the address in two parts:
+    quint64 lower = [event data1];
+    quint64 upper = [event data2];
+    QCocoaPostMessageArgs *args = reinterpret_cast<QCocoaPostMessageArgs *>(lower | (upper << 32));
+    // Special case for convenience: if the argument is an NSNumber, we unbox it directly.
+    // Use NSValue instead if this behaviour is unwanted.
+    id a1 = ([args->arg1 isKindOfClass:[NSNumber class]]) ? (id)[args->arg1 intValue] : args->arg1;
+    id a2 = ([args->arg2 isKindOfClass:[NSNumber class]]) ? (id)[args->arg2 intValue] : args->arg2;
+    switch (args->argCount) {
+    case 0:
+        [args->target performSelector:args->selector];
+        break;
+    case 1:
+        [args->target performSelector:args->selector withObject:a1];
+        break;
+    case 3:
+        [args->target performSelector:args->selector withObject:a1 withObject:a2];
+        break;
+    }
+
+    delete args;
+*/
+}
+
+- (BOOL)qt_filterEvent:(NSEvent *)event
+{
+/*
+    if (qApp->macEventFilter(0, reinterpret_cast<EventRef>(event)))
+        return true;
+
+    if ([event type] == NSApplicationDefined) {
+        switch ([event subtype]) {
+            case QtCocoaEventSubTypePostMessage:
+                [NSApp qt_sendPostedMessage:event];
+                return true;
+            default:
+                break;
+        }
+    }
+*/
+    return false;
+}
+
+@end
+
+@implementation QNSApplication
+
+- (void)qt_sendEvent_original:(NSEvent *)event
+{
+    Q_UNUSED(event);
+    // This method will only be used as a signature
+    // template for the method we add into NSApplication
+    // containing the original [NSApplication sendEvent:] implementation
+}
+
+- (void)qt_sendEvent_replacement:(NSEvent *)event
+{
+    // This method (or its implementation to be precise) will
+    // be called instead of sendEvent if redirection occurs.
+    // 'self' will then be an instance of NSApplication
+    // (and not QNSApplication)
+    if (![NSApp qt_filterEvent:event])
+        [self qt_sendEvent_original:event];
+}
+
+- (void)sendEvent:(NSEvent *)event
+{
+    // This method will be called if
+    // no redirection occurs
+    if (![NSApp qt_filterEvent:event])
+        [super sendEvent:event];
+}
+
+- (void)qtDispatcherToQAction:(id)sender
+{
+    // Forward actions sendt from the menu bar (e.g. quit) to the menu loader.
+    // Having this method here means that we are the last stop in the responder
+    // chain, and that we are able to handle menu actions even when no window is
+    // visible on screen. Note: If Qt is used as a plugin, Qt will not use a 
+    // native menu bar. Hence, we will also not need to do any redirection etc. as 
+    // we do with sendEvent.
+    [[NSApp QT_MANGLE_NAMESPACE(qt_qcocoamenuLoader)] qtDispatcherToQAction:sender];
+}
+
+@end
+
+QT_BEGIN_NAMESPACE
+
+void qt_redirectNSApplicationSendEvent()
+{
+/*
+    if ([NSApp isMemberOfClass:[QNSApplication class]]) {
+        // No need to change implementation since Qt
+        // already controls a subclass of NSApplication
+        return;
+    }
+
+    // Change the implementation of [NSApplication sendEvent] to the
+    // implementation of qt_sendEvent_replacement found in QNSApplication.
+    // And keep the old implementation that gets overwritten inside a new
+    // method 'qt_sendEvent_original' that we add to NSApplication
+    qt_cocoa_change_implementation(
+            [NSApplication class],
+            @selector(sendEvent:),
+            [QNSApplication class],
+            @selector(qt_sendEvent_replacement:),
+            @selector(qt_sendEvent_original:));
+ */
+ }
+
+QT_END_NAMESPACE