Native file dialog support for Mac

* New API: QPlatformDialogHelper to support native dialog on QPA.
    (Currently, It supports only file dialog.)
* Modify QDialog* and QFileDialog* to support native dialog.
* Add native file dialog support to cocoa platform plugin.

Change-Id: I957f046748a27a33fd9f8af3c525feabd1b0f582
Reviewed-by: Morten Johan Sørvig <morten.sorvig@nokia.com>

1 files changed, 758 insertions, 0 deletions

diff --git a/src/plugins/platforms/cocoa/qcocoafiledialoghelper.mm b/src/plugins/platforms/cocoa/qcocoafiledialoghelper.mm
new file mode 100644
index 0000000000..bdccf5dfa5
--- /dev/null
+++ b/src/plugins/platforms/cocoa/qcocoafiledialoghelper.mm
@@ -0,0 +1,758 @@
+/****************************************************************************
+**
+** 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 QtGui module 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.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qcocoafiledialoghelper.h"
+
+#ifndef QT_NO_FILEDIALOG
+
+/*****************************************************************************
+  QFileDialog debug facilities
+ *****************************************************************************/
+//#define DEBUG_FILEDIALOG_FILTERS
+
+#include <qapplication.h>
+#include <private/qapplication_p.h>
+#include <private/qfiledialog_p.h>
+#include <private/qt_mac_p.h>
+#include <private/qt_cocoa_helpers_mac_p.h>
+#include <qregexp.h>
+#include <qbuffer.h>
+#include <qdebug.h>
+#include <qstringlist.h>
+#include <qaction.h>
+#include <qtextcodec.h>
+#include <qvarlengtharray.h>
+#include <qdesktopwidget.h>
+#include <stdlib.h>
+#include <qabstracteventdispatcher.h>
+#import <AppKit/NSSavePanel.h>
+#include "ui_qfiledialog.h"
+
+QT_FORWARD_DECLARE_CLASS(QFileDialogPrivate)
+QT_FORWARD_DECLARE_CLASS(QString)
+QT_FORWARD_DECLARE_CLASS(QStringList)
+QT_FORWARD_DECLARE_CLASS(QWidget)
+QT_FORWARD_DECLARE_CLASS(QAction)
+QT_FORWARD_DECLARE_CLASS(QFileInfo)
+QT_USE_NAMESPACE
+
+@class QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate);
+
+@interface QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate)
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
+    : NSObject<NSOpenSavePanelDelegate>
+#else
+    : NSObject
+#endif
+{
+    @public
+    NSOpenPanel *mOpenPanel;
+    NSSavePanel *mSavePanel;
+    NSView *mAccessoryView;
+    NSPopUpButton *mPopUpButton;
+    NSTextField *mTextField;
+    QFileDialogPrivate *mPriv;
+    QCocoaFileDialogHelper *mHelper;
+    NSString *mCurrentDir;
+    bool mConfirmOverwrite;
+    int mReturnCode;
+
+    QT_PREPEND_NAMESPACE(QFileDialog::AcceptMode) mAcceptMode;
+    QT_PREPEND_NAMESPACE(QDir::Filters) *mQDirFilter;
+    QT_PREPEND_NAMESPACE(QFileDialog::FileMode) mFileMode;
+    QT_PREPEND_NAMESPACE(QFileDialog::Options) *mFileOptions;
+
+    QString *mLastFilterCheckPath;
+    QString *mCurrentSelection;
+    QStringList *mQDirFilterEntryList;
+    QStringList *mNameFilterDropDownList;
+    QStringList *mSelectedNameFilter;
+}
+
+- (NSString *)strip:(const QString &)label;
+- (BOOL)panel:(id)sender shouldShowFilename:(NSString *)filename;
+- (void)filterChanged:(id)sender;
+- (void)showModelessPanel;
+- (BOOL)runApplicationModalPanel;
+- (void)showWindowModalSheet:(QWidget *)docWidget;
+- (void)updateProperties;
+- (QStringList)acceptableExtensionsForSave;
+- (QString)removeExtensions:(const QString &)filter;
+- (void)createTextField;
+- (void)createPopUpButton:(const QString &)selectedFilter hideDetails:(BOOL)hideDetails;
+- (QStringList)findStrippedFilterWithVisualFilterName:(QString)name;
+- (void)createAccessory;
+
+@end
+
+@implementation QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate)
+
+- (id)initWithAcceptMode:(QT_PREPEND_NAMESPACE(QFileDialog::AcceptMode))acceptMode
+    title:(const QString &)title
+    hideNameFilterDetails:(bool)hideNameFilterDetails
+    qDirFilter:(QT_PREPEND_NAMESPACE(QDir::Filters))qDirFilter
+    fileOptions:(QT_PREPEND_NAMESPACE(QFileDialog::Options))fileOptions
+    fileMode:(QT_PREPEND_NAMESPACE(QFileDialog::FileMode))fileMode
+    selectFile:(const QString &)selectFile
+    confirmOverwrite:(bool)confirm
+    priv:(QFileDialogPrivate *)priv
+    helper:(QCocoaFileDialogHelper *)helper
+{
+    self = [super init];
+
+    mAcceptMode = acceptMode;
+    if (mAcceptMode == QT_PREPEND_NAMESPACE(QFileDialog::AcceptOpen)){
+        mOpenPanel = [NSOpenPanel openPanel];
+        mSavePanel = mOpenPanel;
+    } else {
+        mSavePanel = [NSSavePanel savePanel];
+        mOpenPanel = 0;
+    }
+
+    [mSavePanel setLevel:NSModalPanelWindowLevel];
+    [mSavePanel setDelegate:self];
+    mQDirFilter = new QT_PREPEND_NAMESPACE(QDir::Filters)(qDirFilter);
+    mFileOptions = new QT_PREPEND_NAMESPACE(QFileDialog::Options)(fileOptions);
+    mFileMode = fileMode;
+    mConfirmOverwrite = confirm;
+    mReturnCode = -1;
+    mPriv = priv;
+    mHelper = helper;
+    mLastFilterCheckPath = new QString;
+    mQDirFilterEntryList = new QStringList;
+    mNameFilterDropDownList = new QStringList(priv->nameFilters);
+    QString selectedVisualNameFilter = priv->qFileDialogUi->fileTypeCombo->currentText();
+    mSelectedNameFilter = new QStringList([self findStrippedFilterWithVisualFilterName:selectedVisualNameFilter]);
+
+    QFileInfo sel(selectFile);
+    if (sel.isDir()){
+        mCurrentDir = [qt_mac_QStringToNSString(sel.absoluteFilePath()) retain];
+        mCurrentSelection = new QString;
+    } else {
+        mCurrentDir = [qt_mac_QStringToNSString(sel.absolutePath()) retain];
+        mCurrentSelection = new QString(sel.absoluteFilePath());
+    }
+
+    [mSavePanel setTitle:qt_mac_QStringToNSString(title)];
+    [self createPopUpButton:selectedVisualNameFilter hideDetails:hideNameFilterDetails];
+    [self createTextField];
+    [self createAccessory];
+    [mSavePanel setAccessoryView:mNameFilterDropDownList->size() > 1 ? mAccessoryView : nil];
+
+    if (mPriv){
+        [mSavePanel setPrompt:[self strip:mPriv->acceptLabel]];
+        if (mPriv->fileNameLabelExplicitlySat)
+            [mSavePanel setNameFieldLabel:[self strip:mPriv->qFileDialogUi->fileNameLabel->text()]];
+    }
+
+    [self updateProperties];
+    [mSavePanel retain];
+    return self;
+}
+
+- (void)dealloc
+{
+    delete mQDirFilter;
+    delete mFileOptions;
+    delete mLastFilterCheckPath;
+    delete mQDirFilterEntryList;
+    delete mNameFilterDropDownList;
+    delete mSelectedNameFilter;
+    delete mCurrentSelection;
+
+    [mSavePanel orderOut:mSavePanel];
+    [mSavePanel setAccessoryView:nil];
+    [mPopUpButton release];
+    [mTextField release];
+    [mAccessoryView release];
+    [mSavePanel setDelegate:nil];
+    [mSavePanel release];
+    [mCurrentDir release];
+    [super dealloc];
+}
+
+- (NSString *)strip:(const QString &)label
+{
+    QAction a(label, 0);
+    return qt_mac_QStringToNSString(a.iconText());
+}
+
+- (void)closePanel
+{
+    *mCurrentSelection = QT_PREPEND_NAMESPACE(qt_mac_NSStringToQString)([mSavePanel filename]);
+    [mSavePanel close];
+}
+
+- (void)showModelessPanel
+{
+    if (mOpenPanel){
+        QFileInfo info(*mCurrentSelection);
+        NSString *filename = QT_PREPEND_NAMESPACE(qt_mac_QStringToNSString)(info.fileName());
+        NSString *filepath = QT_PREPEND_NAMESPACE(qt_mac_QStringToNSString)(info.filePath());
+        bool selectable = (mAcceptMode == QFileDialog::AcceptSave)
+            || [self panel:nil shouldShowFilename:filepath];
+        [mOpenPanel
+            beginForDirectory:mCurrentDir
+            file:selectable ? filename : nil
+            types:nil
+            modelessDelegate:self
+            didEndSelector:@selector(openPanelDidEnd:returnCode:contextInfo:)
+            contextInfo:nil];
+    }
+}
+
+- (BOOL)runApplicationModalPanel
+{
+    QFileInfo info(*mCurrentSelection);
+    NSString *filename = QT_PREPEND_NAMESPACE(qt_mac_QStringToNSString)(info.fileName());
+    NSString *filepath = QT_PREPEND_NAMESPACE(qt_mac_QStringToNSString)(info.filePath());
+    bool selectable = (mAcceptMode == QFileDialog::AcceptSave)
+        || [self panel:nil shouldShowFilename:filepath];
+    mReturnCode = [mSavePanel
+        runModalForDirectory:mCurrentDir
+        file:selectable ? filename : @"untitled"];
+
+    QAbstractEventDispatcher::instance()->interrupt();
+    return (mReturnCode == NSOKButton);
+}
+
+- (QT_PREPEND_NAMESPACE(QDialog::DialogCode))dialogResultCode
+{
+    return (mReturnCode == NSOKButton) ? QT_PREPEND_NAMESPACE(QDialog::Accepted) : QT_PREPEND_NAMESPACE(QDialog::Rejected);
+}
+
+- (void)showWindowModalSheet:(QWidget *)docWidget
+{
+    Q_UNUSED(docWidget);
+    QFileInfo info(*mCurrentSelection);
+    NSString *filename = QT_PREPEND_NAMESPACE(qt_mac_QStringToNSString)(info.fileName());
+    NSString *filepath = QT_PREPEND_NAMESPACE(qt_mac_QStringToNSString)(info.filePath());
+    bool selectable = (mAcceptMode == QFileDialog::AcceptSave)
+        || [self panel:nil shouldShowFilename:filepath];
+    [mSavePanel
+        beginSheetForDirectory:mCurrentDir
+        file:selectable ? filename : nil
+        modalForWindow:nil
+        modalDelegate:self
+        didEndSelector:@selector(openPanelDidEnd:returnCode:contextInfo:)
+        contextInfo:nil];
+}
+
+- (BOOL)panel:(id)sender shouldShowFilename:(NSString *)filename
+{
+    Q_UNUSED(sender);
+
+    if ([filename length] == 0)
+        return NO;
+
+    // Always accept directories regardless of their names (unless it is a bundle):
+    BOOL isDir;
+    if ([[NSFileManager defaultManager] fileExistsAtPath:filename isDirectory:&isDir] && isDir) {
+        if ([mSavePanel treatsFilePackagesAsDirectories] == NO) {
+            if ([[NSWorkspace sharedWorkspace] isFilePackageAtPath:filename] == NO)
+                return YES;
+        }
+    }
+
+    QString qtFileName = QT_PREPEND_NAMESPACE(qt_mac_NSStringToQString)(filename);
+    QFileInfo info(qtFileName.normalized(QT_PREPEND_NAMESPACE(QString::NormalizationForm_C)));
+    QString path = info.absolutePath();
+    if (path != *mLastFilterCheckPath){
+        *mLastFilterCheckPath = path;
+        *mQDirFilterEntryList = info.dir().entryList(*mQDirFilter);
+    }
+    // Check if the QDir filter accepts the file:
+    if (!mQDirFilterEntryList->contains(info.fileName()))
+        return NO;
+
+    // No filter means accept everything
+    if (mSelectedNameFilter->isEmpty())
+        return YES;
+    // Check if the current file name filter accepts the file:
+    for (int i=0; i<mSelectedNameFilter->size(); ++i) {
+        if (QDir::match(mSelectedNameFilter->at(i), qtFileName))
+            return YES;
+    }
+    return NO;
+}
+
+- (NSString *)panel:(id)sender userEnteredFilename:(NSString *)filename confirmed:(BOOL)okFlag
+{
+    Q_UNUSED(sender);
+    if (!okFlag)
+        return filename;
+    if (mConfirmOverwrite)
+        return filename;
+
+    // User has clicked save, and no overwrite confirmation should occur.
+    // To get the latter, we need to change the name we return (hence the prefix):
+    return [@"___qt_very_unlikely_prefix_" stringByAppendingString:filename];
+}
+
+- (void)setNameFilters:(const QStringList &)filters hideDetails:(BOOL)hideDetails
+{
+    [mPopUpButton removeAllItems];
+    *mNameFilterDropDownList = filters;
+    if (filters.size() > 0){
+        for (int i=0; i<filters.size(); ++i) {
+            QString filter = hideDetails ? [self removeExtensions:filters.at(i)] : filters.at(i);
+            [mPopUpButton addItemWithTitle:QT_PREPEND_NAMESPACE(qt_mac_QStringToNSString)(filter)];
+        }
+        [mPopUpButton selectItemAtIndex:0];
+        [mSavePanel setAccessoryView:mAccessoryView];
+    } else
+        [mSavePanel setAccessoryView:nil];
+
+    [self filterChanged:self];
+}
+
+- (void)filterChanged:(id)sender
+{
+    // This mDelegate function is called when the _name_ filter changes.
+    Q_UNUSED(sender);
+    QString selection = mNameFilterDropDownList->value([mPopUpButton indexOfSelectedItem]);
+    *mSelectedNameFilter = [self findStrippedFilterWithVisualFilterName:selection];
+    [mSavePanel validateVisibleColumns];
+    [self updateProperties];
+    if (mHelper)
+        mHelper->QNSOpenSavePanelDelegate_filterSelected([mPopUpButton indexOfSelectedItem]);
+}
+
+- (QString)currentNameFilter
+{
+    return mNameFilterDropDownList->value([mPopUpButton indexOfSelectedItem]);
+}
+
+- (QStringList)selectedFiles
+{
+    if (mOpenPanel)
+        return QT_PREPEND_NAMESPACE(qt_mac_NSArrayToQStringList)([mOpenPanel filenames]);
+    else{
+        QStringList result;
+        QString filename = QT_PREPEND_NAMESPACE(qt_mac_NSStringToQString)([mSavePanel filename]);
+        result << filename.remove(QLatin1String("___qt_very_unlikely_prefix_"));
+        return result;
+    }
+}
+
+- (void)updateProperties
+{
+    // Call this functions if mFileMode, mFileOptions,
+    // mNameFilterDropDownList or mQDirFilter changes.
+    // The savepanel does not contain the neccessary functions for this.
+    bool chooseFilesOnly = mFileMode == QT_PREPEND_NAMESPACE(QFileDialog::ExistingFile)
+        || mFileMode == QT_PREPEND_NAMESPACE(QFileDialog::ExistingFiles);
+    bool chooseDirsOnly = mFileMode == QT_PREPEND_NAMESPACE(QFileDialog::Directory)
+        || mFileMode == QT_PREPEND_NAMESPACE(QFileDialog::DirectoryOnly)
+        || *mFileOptions & QT_PREPEND_NAMESPACE(QFileDialog::ShowDirsOnly);
+
+    [mOpenPanel setCanChooseFiles:!chooseDirsOnly];
+    [mOpenPanel setCanChooseDirectories:!chooseFilesOnly];
+    [mSavePanel setCanCreateDirectories:!(*mFileOptions & QT_PREPEND_NAMESPACE(QFileDialog::ReadOnly))];
+    [mOpenPanel setAllowsMultipleSelection:(mFileMode == QT_PREPEND_NAMESPACE(QFileDialog::ExistingFiles))];
+    [mOpenPanel setResolvesAliases:!(*mFileOptions & QT_PREPEND_NAMESPACE(QFileDialog::DontResolveSymlinks))];
+
+    QStringList ext = [self acceptableExtensionsForSave];
+    if (mPriv && !ext.isEmpty() && !mPriv->defaultSuffix.isEmpty())
+        ext.prepend(mPriv->defaultSuffix);
+    [mSavePanel setAllowedFileTypes:ext.isEmpty() ? nil : QT_PREPEND_NAMESPACE(qt_mac_QStringListToNSMutableArray(ext))];
+
+    if ([mSavePanel isVisible])
+        [mOpenPanel validateVisibleColumns];
+}
+
+- (void)panelSelectionDidChange:(id)sender
+{
+    Q_UNUSED(sender);
+    if (mHelper) {
+        QString selection = QT_PREPEND_NAMESPACE(qt_mac_NSStringToQString([mSavePanel filename]));
+        if (selection != mCurrentSelection) {
+            *mCurrentSelection = selection;
+            mHelper->QNSOpenSavePanelDelegate_selectionChanged(selection);
+        }
+    }
+}
+
+- (void)openPanelDidEnd:(NSOpenPanel *)panel returnCode:(int)returnCode  contextInfo:(void *)contextInfo
+{
+    Q_UNUSED(panel);
+    Q_UNUSED(contextInfo);
+    mReturnCode = returnCode;
+    if (mHelper)
+        mHelper->QNSOpenSavePanelDelegate_panelClosed(returnCode == NSOKButton);
+}
+
+- (void)panel:(id)sender directoryDidChange:(NSString *)path
+{
+    Q_UNUSED(sender);
+    if (!mHelper)
+        return;
+    if ([path isEqualToString:mCurrentDir])
+        return;
+
+    [mCurrentDir release];
+    mCurrentDir = [path retain];
+    mHelper->QNSOpenSavePanelDelegate_directoryEntered(QT_PREPEND_NAMESPACE(qt_mac_NSStringToQString(mCurrentDir)));
+}
+
+/*
+    Returns a list of extensions (e.g. "png", "jpg", "gif")
+    for the current name filter. If a filter do not conform
+    to the format *.xyz or * or *.*, an empty list
+    is returned meaning accept everything.
+*/
+- (QStringList)acceptableExtensionsForSave
+{
+    QStringList result;
+    for (int i=0; i<mSelectedNameFilter->count(); ++i) {
+        const QString &filter = mSelectedNameFilter->at(i);
+        if (filter.startsWith(QLatin1String("*."))
+                && !filter.contains(QLatin1Char('?'))
+                && filter.count(QLatin1Char('*')) == 1) {
+            result += filter.mid(2);
+        } else {
+            return QStringList(); // Accept everything
+        }
+    }
+    return result;
+}
+
+- (QString)removeExtensions:(const QString &)filter
+{
+    QRegExp regExp(QT_PREPEND_NAMESPACE(QString::fromLatin1)(QT_PREPEND_NAMESPACE(QFileDialogPrivate::qt_file_dialog_filter_reg_exp)));
+    if (regExp.indexIn(filter) != -1)
+        return regExp.cap(1).trimmed();
+    return filter;
+}
+
+- (void)createTextField
+{
+    NSRect textRect = { { 0.0, 3.0 }, { 100.0, 25.0 } };
+    mTextField = [[NSTextField alloc] initWithFrame:textRect];
+    [[mTextField cell] setFont:[NSFont systemFontOfSize:
+            [NSFont systemFontSizeForControlSize:NSRegularControlSize]]];
+    [mTextField setAlignment:NSRightTextAlignment];
+    [mTextField setEditable:false];
+    [mTextField setSelectable:false];
+    [mTextField setBordered:false];
+    [mTextField setDrawsBackground:false];
+    if (mPriv){
+        [mTextField setStringValue:[self strip:mPriv->qFileDialogUi->fileTypeLabel->text()]];
+    } else
+        [mTextField setStringValue:QT_PREPEND_NAMESPACE(qt_mac_QStringToNSString)(QT_PREPEND_NAMESPACE(QFileDialog::tr)("Files of type:"))];
+}
+
+- (void)createPopUpButton:(const QString &)selectedFilter hideDetails:(BOOL)hideDetails
+{
+    NSRect popUpRect = { { 100.0, 5.0 }, { 250.0, 25.0 } };
+    mPopUpButton = [[NSPopUpButton alloc] initWithFrame:popUpRect pullsDown:NO];
+    [mPopUpButton setTarget:self];
+    [mPopUpButton setAction:@selector(filterChanged:)];
+
+    QStringList *filters = mNameFilterDropDownList;
+    if (filters->size() > 0){
+        for (int i=0; i<mNameFilterDropDownList->size(); ++i) {
+            QString filter = hideDetails ? [self removeExtensions:filters->at(i)] : filters->at(i);
+            [mPopUpButton addItemWithTitle:QT_PREPEND_NAMESPACE(qt_mac_QStringToNSString)(filter)];
+            if (filters->at(i).startsWith(selectedFilter))
+                [mPopUpButton selectItemAtIndex:i];
+        }
+    }
+}
+
+- (QStringList) findStrippedFilterWithVisualFilterName:(QString)name
+{
+    for (int i=0; i<mNameFilterDropDownList->size(); ++i) {
+        if (mNameFilterDropDownList->at(i).startsWith(name))
+            return QFileDialogPrivate::qt_clean_filter_list(mNameFilterDropDownList->at(i));
+    }
+    return QStringList();
+}
+
+- (void)createAccessory
+{
+    NSRect accessoryRect = { { 0.0, 0.0 }, { 450.0, 33.0 } };
+    mAccessoryView = [[NSView alloc] initWithFrame:accessoryRect];
+    [mAccessoryView addSubview:mTextField];
+    [mAccessoryView addSubview:mPopUpButton];
+}
+
+@end
+
+QT_BEGIN_NAMESPACE
+
+static bool qt_mac_is_macsheet(const QWidget *w)
+{
+    if (!w)
+        return false;
+
+    Qt::WindowModality modality = w->windowModality();
+    if (modality == Qt::ApplicationModal)
+        return false;
+    return w->parentWidget() && (modality == Qt::WindowModal || w->windowType() == Qt::Sheet);
+}
+
+QCocoaFileDialogHelper::QCocoaFileDialogHelper(QFileDialog *dialog) :
+    qtFileDialog(dialog), mDelegate(0)
+{
+}
+
+QCocoaFileDialogHelper::~QCocoaFileDialogHelper()
+{
+
+}
+
+void QCocoaFileDialogHelper::QNSOpenSavePanelDelegate_selectionChanged(const QString &newPath)
+{
+    qtFileDialog->metaObject()->invokeMethod(qtFileDialog, "currentChanged", Q_ARG(QString, newPath));
+}
+
+void QCocoaFileDialogHelper::QNSOpenSavePanelDelegate_panelClosed(bool accepted)
+{
+    if (accepted)
+        qtFileDialog->metaObject()->invokeMethod(qtFileDialog, "accept");
+    else
+        qtFileDialog->metaObject()->invokeMethod(qtFileDialog, "reject");
+}
+
+void QCocoaFileDialogHelper::QNSOpenSavePanelDelegate_directoryEntered(const QString &newDir)
+{
+    QFileDialogPrivate *priv = static_cast<QFileDialogPrivate*>(d_ptr);
+    priv->setLastVisitedDirectory(newDir);
+    qtFileDialog->metaObject()->invokeMethod(qtFileDialog, "directoryEntered", Q_ARG(QString, newDir));
+}
+
+void QCocoaFileDialogHelper::QNSOpenSavePanelDelegate_filterSelected(int menuIndex)
+{
+    QFileDialogPrivate *priv = static_cast<QFileDialogPrivate*>(d_ptr);
+    qtFileDialog->metaObject()->invokeMethod(qtFileDialog, "filterSelected", Q_ARG(QString, priv->nameFilters.at(menuIndex)));
+}
+
+extern OSErr qt_mac_create_fsref(const QString &, FSRef *); // qglobal.cpp
+extern void qt_mac_to_pascal_string(QString s, Str255 str, TextEncoding encoding=0, int len=-1); // qglobal.cpp
+
+void QCocoaFileDialogHelper::setDirectory_sys(const QString &directory)
+{
+    QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *delegate = static_cast<QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *>(mDelegate);
+    [delegate->mSavePanel setDirectory:qt_mac_QStringToNSString(directory)];
+}
+
+QString QCocoaFileDialogHelper::directory_sys() const
+{
+    QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *delegate = static_cast<QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *>(mDelegate);
+    return qt_mac_NSStringToQString([delegate->mSavePanel directory]);
+}
+
+void QCocoaFileDialogHelper::selectFile_sys(const QString &filename)
+{
+    QString filePath = filename;
+    if (QDir::isRelativePath(filePath))
+        filePath = QFileInfo(directory_sys(), filePath).filePath();
+
+    // There seems to no way to select a file once the dialog is running.
+    // So do the next best thing, set the file's directory:
+    setDirectory_sys(QFileInfo(filePath).absolutePath());
+}
+
+QStringList QCocoaFileDialogHelper::selectedFiles_sys() const
+{
+    QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *delegate = static_cast<QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *>(mDelegate);
+    return [delegate selectedFiles];
+}
+
+void QCocoaFileDialogHelper::setNameFilters_sys(const QStringList &filters)
+{
+    QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *delegate = static_cast<QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *>(mDelegate);
+    bool hideDetails = qtFileDialog->testOption(QFileDialog::HideNameFilterDetails);
+    [delegate setNameFilters:filters hideDetails:hideDetails];
+}
+
+void QCocoaFileDialogHelper::setFilter_sys()
+{
+    QFileDialogPrivate *priv = static_cast<QFileDialogPrivate*>(d_ptr);
+    QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *delegate = static_cast<QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *>(mDelegate);
+    *(delegate->mQDirFilter) = priv->model->filter();
+    delegate->mFileMode = priv->fileMode;
+    [delegate->mSavePanel setTitle:qt_mac_QStringToNSString(qtFileDialog->windowTitle())];
+    [delegate->mSavePanel setPrompt:[delegate strip:priv->acceptLabel]];
+    if (priv->fileNameLabelExplicitlySat)
+        [delegate->mSavePanel setNameFieldLabel:[delegate strip:priv->qFileDialogUi->fileNameLabel->text()]];
+
+    [delegate updateProperties];
+}
+
+void QCocoaFileDialogHelper::selectNameFilter_sys(const QString &filter)
+{
+    QFileDialogPrivate *priv = static_cast<QFileDialogPrivate*>(d_ptr);
+    int index = priv->nameFilters.indexOf(filter);
+    if (index != -1) {
+        QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *delegate = static_cast<QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *>(mDelegate);
+        [delegate->mPopUpButton selectItemAtIndex:index];
+        [delegate filterChanged:nil];
+    }
+}
+
+QString QCocoaFileDialogHelper::selectedNameFilter_sys() const
+{
+    QFileDialogPrivate *priv = static_cast<QFileDialogPrivate*>(d_ptr);
+    QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *delegate = static_cast<QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *>(mDelegate);
+    int index = [delegate->mPopUpButton indexOfSelectedItem];
+    return index != -1 ? priv->nameFilters.at(index) : QString();
+}
+
+void QCocoaFileDialogHelper::deleteNativeDialog_sys()
+{
+    QFileDialogPrivate *priv = static_cast<QFileDialogPrivate*>(d_ptr);
+    [reinterpret_cast<QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *>(mDelegate) release];
+    mDelegate = 0;
+    priv->nativeDialogInUse = false;
+}
+
+bool QCocoaFileDialogHelper::setVisible_sys(bool visible)
+{
+//    Q_Q(QFileDialog);
+    if (!visible == qtFileDialog->isHidden())
+        return false;
+
+    if (qtFileDialog->windowFlags() & Qt::WindowStaysOnTopHint) {
+        // The native file dialog tries all it can to stay
+        // on the NSModalPanel level. And it might also show
+        // its own "create directory" dialog that we cannot control.
+        // So we need to use the non-native version in this case...
+        return false;
+    }
+
+    return visible ? showCocoaFilePanel() : hideCocoaFilePanel();
+}
+
+void QCocoaFileDialogHelper::createNSOpenSavePanelDelegate()
+{
+    QFileDialogPrivate *priv = static_cast<QFileDialogPrivate*>(d_ptr);
+    if (mDelegate)
+        return;
+
+    bool selectDir = qtFileDialog->selectedFiles().isEmpty();
+    QString selection(selectDir ? qtFileDialog->directory().absolutePath() : qtFileDialog->selectedFiles().value(0));
+    QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *delegate = [[QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) alloc]
+        initWithAcceptMode:priv->acceptMode
+        title:qtFileDialog->windowTitle()
+        hideNameFilterDetails:qtFileDialog->testOption(QFileDialog::HideNameFilterDetails)
+        qDirFilter:priv->model->filter()
+        fileOptions:priv->opts
+        fileMode:priv->fileMode
+        selectFile:selection
+        confirmOverwrite:!qtFileDialog->testOption(QFileDialog::DontConfirmOverwrite)
+        priv:priv
+        helper:this];
+
+    mDelegate = delegate;
+}
+
+bool QCocoaFileDialogHelper::showCocoaFilePanel()
+{
+//    Q_Q(QFileDialog);
+    createNSOpenSavePanelDelegate();
+    QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *delegate = static_cast<QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *>(mDelegate);
+    if (qt_mac_is_macsheet(qtFileDialog))
+        [delegate showWindowModalSheet:qtFileDialog->parentWidget()];
+    else
+        [delegate showModelessPanel];
+    return true;
+}
+
+bool QCocoaFileDialogHelper::hideCocoaFilePanel()
+{
+    if (!mDelegate){
+        // Nothing to do. We return false to leave the question
+        // open regarding whether or not to go native:
+        return false;
+    } else {
+        QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *delegate = static_cast<QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *>(mDelegate);
+        [delegate closePanel];
+        // Even when we hide it, we are still using a
+        // native dialog, so return true:
+        return true;
+    }
+}
+
+void QCocoaFileDialogHelper::platformNativeDialogModalHelp()
+{
+    // Do a queued meta-call to open the native modal dialog so it opens after the new
+    // event loop has started to execute (in QDialog::exec). Using a timer rather than
+    // a queued meta call is intentional to ensure that the call is only delivered when
+    // [NSApp run] runs (timers are handeled special in cocoa). If NSApp is not
+    // running (which is the case if e.g a top-most QEventLoop has been
+    // interrupted, and the second-most event loop has not yet been reactivated (regardless
+    // if [NSApp run] is still on the stack)), showing a native modal dialog will fail.
+    QFileDialogPrivate *priv = static_cast<QFileDialogPrivate*>(d_ptr);
+    if (priv->nativeDialogInUse){
+        QTimer::singleShot(1, qtFileDialog, SLOT(_q_platformRunNativeAppModalPanel()));
+    }
+}
+
+void QCocoaFileDialogHelper::_q_platformRunNativeAppModalPanel()
+{
+    // TODO:
+#if 0
+    QBoolBlocker nativeDialogOnTop(QApplicationPrivate::native_modal_dialog_active);
+#endif
+    QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *delegate = static_cast<QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *>(mDelegate);
+    [delegate runApplicationModalPanel];
+    if (dialogResultCode_sys() == QDialog::Accepted)
+        qtFileDialog->metaObject()->invokeMethod(qtFileDialog, "accept");
+    else
+        qtFileDialog->metaObject()->invokeMethod(qtFileDialog, "reject");
+}
+
+QDialog::DialogCode QCocoaFileDialogHelper::dialogResultCode_sys()
+{
+    QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *delegate = static_cast<QT_MANGLE_NAMESPACE(QNSOpenSavePanelDelegate) *>(mDelegate);
+    return [delegate dialogResultCode];
+}
+
+bool QCocoaFileDialogHelper::defaultNameFilterDisables() const
+{
+    return true;
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_FILEDIALOG