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#include "qfontdialog_p.h"

#if !defined(QT_NO_FONTDIALOG) && defined(Q_WS_MAC)

#include <qapplication.h>

#include <qdialogbuttonbox.h>

#include <qlineedit.h>

#include <private/qapplication_p.h>

#include <private/qfont_p.h>

#include <private/qfontengine_p.h>

#include <private/qt_cocoa_helpers_mac_p.h>

#include <private/qt_mac_p.h>

#include <qabstracteventdispatcher.h>

#include <qdebug.h>

#import <AppKit/AppKit.h>

#import <Foundation/Foundation.h>

#if !CGFLOAT_DEFINED

typedef float CGFloat;  // Should only not be defined on 32-bit platforms

#endif

QT_USE_NAMESPACE

// should a priori be kept in sync with qcolordialog_mac.mm

const CGFloat ButtonMinWidth = 78.0;

const CGFloat ButtonMinHeight = 32.0;

const CGFloat ButtonSpacing = 0.0;

const CGFloat ButtonTopMargin = 0.0;

const CGFloat ButtonBottomMargin = 7.0;

const CGFloat ButtonSideMargin = 9.0;

// looks better with some margins

const CGFloat DialogTopMargin = 7.0;

const CGFloat DialogSideMargin = 9.0;

const int StyleMask = NSTitledWindowMask | NSClosableWindowMask | NSResizableWindowMask;

@class QCocoaFontPanelDelegate;

#if MAC_OS_X_VERSION_MAX_ALLOWED <= MAC_OS_X_VERSION_10_5

@protocol NSWindowDelegate <NSObject>

- (NSSize)windowWillResize:(NSWindow *)window toSize:(NSSize)proposedFrameSize;

@end

#endif

@interface QCocoaFontPanelDelegate : NSObject <NSWindowDelegate> {

    NSFontPanel *mFontPanel;

    NSView *mStolenContentView;

    NSButton *mOkButton;

    NSButton *mCancelButton;

    QFontDialogPrivate *mPriv;

    QFont *mQtFont;

    BOOL mPanelHackedWithButtons;

    CGFloat mDialogExtraWidth;

    CGFloat mDialogExtraHeight;

    NSModalSession mModalSession;

}

- (id)initWithFontPanel:(NSFontPanel *)panel

      stolenContentView:(NSView *)stolenContentView

               okButton:(NSButton *)okButton

           cancelButton:(NSButton *)cancelButton

                   priv:(QFontDialogPrivate *)priv

             extraWidth:(CGFloat)extraWidth

            extraHeight:(CGFloat)extraHeight;

- (void)changeFont:(id)sender;

- (void)changeAttributes:(id)sender;

- (void)setModalSession:(NSModalSession)session;

- (BOOL)windowShouldClose:(id)window;

- (NSSize)windowWillResize:(NSWindow *)window toSize:(NSSize)proposedFrameSize;

- (void)relayout;

- (void)relayoutToContentSize:(NSSize)frameSize;

- (void)onOkClicked;

- (void)onCancelClicked;

- (NSFontPanel *)fontPanel;

- (NSWindow *)actualPanel;

- (NSSize)dialogExtraSize;

- (void)setQtFont:(const QFont &)newFont;

- (QFont)qtFont;

- (void)finishOffWithCode:(NSInteger)result;

- (void)cleanUpAfterMyself;

@end

static QFont qfontForCocoaFont(NSFont *cocoaFont, const QFont &resolveFont)

{

    QFont newFont;

    if (cocoaFont) {

        int pSize = qRound([cocoaFont pointSize]);

        QString family(qt_mac_NSStringToQString([cocoaFont familyName]));

        QString typeface(qt_mac_NSStringToQString([cocoaFont fontName]));

        int hyphenPos = typeface.indexOf(QLatin1Char('-'));

        if (hyphenPos != -1) {

            typeface.remove(0, hyphenPos + 1);

        } else {

            typeface = QLatin1String("Normal");

        }

        newFont = QFontDatabase().font(family, typeface, pSize);

        newFont.setUnderline(resolveFont.underline());

        newFont.setStrikeOut(resolveFont.strikeOut());

    }

    return newFont;

}

@implementation QCocoaFontPanelDelegate

- (id)initWithFontPanel:(NSFontPanel *)panel

       stolenContentView:(NSView *)stolenContentView

                okButton:(NSButton *)okButton

            cancelButton:(NSButton *)cancelButton

                    priv:(QFontDialogPrivate *)priv

              extraWidth:(CGFloat)extraWidth

             extraHeight:(CGFloat)extraHeight

{

    self = [super init];

    mFontPanel = panel;

    mStolenContentView = stolenContentView;

    mOkButton = okButton;

    mCancelButton = cancelButton;

    mPriv = priv;

    mPanelHackedWithButtons = (okButton != 0);

    mDialogExtraWidth = extraWidth;

    mDialogExtraHeight = extraHeight;

    mModalSession = 0;

    if (mPanelHackedWithButtons) {

        [self relayout];

        [okButton setAction:@selector(onOkClicked)];

        [okButton setTarget:self];

        [cancelButton setAction:@selector(onCancelClicked)];

        [cancelButton setTarget:self];

    }

    mQtFont = new QFont();

    return self;

}

- (void)dealloc

{

    delete mQtFont;

    [super dealloc];

}

- (void)changeFont:(id)sender

{

    NSFont *dummyFont = [NSFont userFontOfSize:12.0];

    [self setQtFont:qfontForCocoaFont([sender convertFont:dummyFont], *mQtFont)];

    if (mPriv)

        mPriv->updateSampleFont(*mQtFont);

}

- (void)changeAttributes:(id)sender

{

    NSDictionary *dummyAttribs = [NSDictionary dictionary];

    NSDictionary *attribs = [sender convertAttributes:dummyAttribs];

#ifdef QT_MAC_USE_COCOA

    for (id key in attribs) {

#else

    NSEnumerator *enumerator = [attribs keyEnumerator];

    id key;

    while((key = [enumerator nextObject])) {

#endif

        NSNumber *number = static_cast<NSNumber *>([attribs objectForKey:key]);

        if ([key isEqual:NSUnderlineStyleAttributeName]) {

            mQtFont->setUnderline([number intValue] != NSUnderlineStyleNone);

        } else if ([key isEqual:NSStrikethroughStyleAttributeName]) {

            mQtFont->setStrikeOut([number intValue] != NSUnderlineStyleNone);

        }

    }

    if (mPriv)

        mPriv->updateSampleFont(*mQtFont);

}

- (void)setModalSession:(NSModalSession)session

{

    Q_ASSERT(!mModalSession);

    mModalSession = session;

}

- (BOOL)windowShouldClose:(id)window

{

    Q_UNUSED(window);

    if (mPanelHackedWithButtons) {

        [self onCancelClicked];

    } else {

        [self finishOffWithCode:NSCancelButton];

    }

    return true;

}

- (NSSize)windowWillResize:(NSWindow *)window toSize:(NSSize)proposedFrameSize

{

    if (mFontPanel == window) {

        proposedFrameSize = [static_cast<id <NSWindowDelegate> >(mFontPanel) windowWillResize:mFontPanel toSize:proposedFrameSize];

    } else {

        /*

            Ugly hack: NSFontPanel rearranges the layout of its main

            component in windowWillResize:toSize:. So we temporarily

            restore the stolen content view to its rightful owner,

            call windowWillResize:toSize:, and steal the content view

            again.

        */

        [mStolenContentView removeFromSuperview];

        [mFontPanel setContentView:mStolenContentView];

        NSSize extraSize = [self dialogExtraSize];

        proposedFrameSize.width -= extraSize.width;

        proposedFrameSize.height -= extraSize.height;

        proposedFrameSize = [static_cast<id <NSWindowDelegate> >(mFontPanel) windowWillResize:mFontPanel toSize:proposedFrameSize];

        NSRect frameRect = { { 0.0, 0.0 }, proposedFrameSize };

        [mFontPanel setFrame:frameRect display:NO];

        [mFontPanel setContentView:0];

        [[window contentView] addSubview:mStolenContentView];

        proposedFrameSize.width += extraSize.width;

        proposedFrameSize.height += extraSize.height;

    }

    if (mPanelHackedWithButtons) {

        NSRect frameRect = { { 0.0, 0.0 }, proposedFrameSize };

        NSRect contentRect = [NSWindow contentRectForFrameRect:frameRect styleMask:[window styleMask]];

        [self relayoutToContentSize:contentRect.size];

    }

    return proposedFrameSize;

}

- (void)relayout

{

    [self relayoutToContentSize:[[mStolenContentView superview] frame].size];

}

- (void)relayoutToContentSize:(NSSize)frameSize;

{

    Q_ASSERT(mPanelHackedWithButtons);

    [mOkButton sizeToFit];

    NSSize okSizeHint = [mOkButton frame].size;

    [mCancelButton sizeToFit];

    NSSize cancelSizeHint = [mCancelButton frame].size;

    const CGFloat ButtonWidth = qMin(qMax(ButtonMinWidth,

                                          qMax(okSizeHint.width, cancelSizeHint.width)),

                                     CGFloat((frameSize.width - 2.0 * ButtonSideMargin

                                              - ButtonSpacing) * 0.5));

    const CGFloat ButtonHeight = qMax(ButtonMinHeight,

                                     qMax(okSizeHint.height, cancelSizeHint.height));

    const CGFloat X = DialogSideMargin;

    const CGFloat Y = ButtonBottomMargin + ButtonHeight + ButtonTopMargin;

    NSRect okRect = { { frameSize.width - ButtonSideMargin - ButtonWidth,

                        ButtonBottomMargin },

                      { ButtonWidth, ButtonHeight } };

    [mOkButton setFrame:okRect];

    [mOkButton setNeedsDisplay:YES];

    NSRect cancelRect = { { okRect.origin.x - ButtonSpacing - ButtonWidth,

                            ButtonBottomMargin },

                            { ButtonWidth, ButtonHeight } };

    [mCancelButton setFrame:cancelRect];

    [mCancelButton setNeedsDisplay:YES];

    NSRect stolenCVRect = { { X, Y },

                            { frameSize.width - X - X, frameSize.height - Y - DialogTopMargin } };

    [mStolenContentView setFrame:stolenCVRect];

    [mStolenContentView setNeedsDisplay:YES];

    [[mStolenContentView superview] setNeedsDisplay:YES];

}

- (void)onOkClicked

{

    Q_ASSERT(mPanelHackedWithButtons);

    NSFontManager *fontManager = [NSFontManager sharedFontManager];

    [self setQtFont:qfontForCocoaFont([fontManager convertFont:[fontManager selectedFont]],

                                      *mQtFont)];

    [[mStolenContentView window] close];

    [self finishOffWithCode:NSOKButton];

}

- (void)onCancelClicked

{

    Q_ASSERT(mPanelHackedWithButtons);

    [[mStolenContentView window] close];

    [self finishOffWithCode:NSCancelButton];

}

- (NSFontPanel *)fontPanel

{

    return mFontPanel;

}

- (NSWindow *)actualPanel

{

    return [mStolenContentView window];

}

- (NSSize)dialogExtraSize

{

    // this must be recomputed each time, because sometimes the

    // NSFontPanel has the NSDocModalWindowMask flag set, and sometimes

    // not -- which affects the frame rect vs. content rect measurements

    // take the different frame rectangles into account for dialogExtra{Width,Height}

    NSRect someRect = { { 0.0, 0.0 }, { 100000.0, 100000.0 } };

    NSRect sharedFontPanelContentRect = [mFontPanel contentRectForFrameRect:someRect];

    NSRect ourPanelContentRect = [NSWindow contentRectForFrameRect:someRect styleMask:StyleMask];

    NSSize result = { mDialogExtraWidth, mDialogExtraHeight };

    result.width -= ourPanelContentRect.size.width - sharedFontPanelContentRect.size.width;

    result.height -= ourPanelContentRect.size.height - sharedFontPanelContentRect.size.height;

    return result;

}

- (void)setQtFont:(const QFont &)newFont

{

    delete mQtFont;

    mQtFont = new QFont(newFont);

}

- (QFont)qtFont

{

    return *mQtFont;

}

- (void)finishOffWithCode:(NSInteger)code

{

    if (mPriv) {

        if (mModalSession) {

            [NSApp endModalSession:mModalSession];

            mModalSession = 0;

        }

        // Hack alert!

        // Since this code path was never intended to be followed when starting from exec

        // we need to force the dialog to communicate the new font, otherwise the signal

        // won't get emitted.

        if(code == NSOKButton)

            mPriv->sampleEdit->setFont([self qtFont]);

        mPriv->done((code == NSOKButton) ? QDialog::Accepted : QDialog::Rejected);

    } else {

        [NSApp stopModalWithCode:code];

    }

}

- (void)cleanUpAfterMyself

{

    if (mPanelHackedWithButtons) {

        NSView *ourContentView = [mFontPanel contentView];

        // return stolen stuff to its rightful owner

        [mStolenContentView removeFromSuperview];

        [mFontPanel setContentView:mStolenContentView];

        [mOkButton release];

        [mCancelButton release];

        [ourContentView release];

    }

    [mFontPanel setDelegate:nil];

    [[NSFontManager sharedFontManager] setDelegate:nil];

#ifdef QT_MAC_USE_COCOA

    [[NSFontManager sharedFontManager] setTarget:nil];

#endif

}

@end

QT_BEGIN_NAMESPACE

extern void macStartInterceptNSPanelCtor();

extern void macStopInterceptNSPanelCtor();

extern NSButton *macCreateButton(const char *text, NSView *superview);

void *QFontDialogPrivate::openCocoaFontPanel(const QFont &initial,

        QWidget *parent, const QString &title, QFontDialog::FontDialogOptions options,

        QFontDialogPrivate *priv)

{

    Q_UNUSED(parent);   // we would use the parent if only NSFontPanel could be a sheet

    QMacCocoaAutoReleasePool pool;

    /*

        The standard Cocoa font panel has no OK or Cancel button and

        is created as a utility window. For strange reasons (which seem

        to stem from the fact that the font panel is based on a NIB

        file), the approach we use for the color panel doesn't work for

        the font panel (and, inversely, the approach we use here doesn't

        quite work for color panel, and crashed last time I tried). So

        instead, we take the following steps:

         1. Constructs a plain NSPanel that looks the way we want it

            to look. Specifically, if the NoButtons option is off, we

            construct a panel without the NSUtilityWindowMask flag

            and with buttons (OK and Cancel).

         2. Steal the content view from the shared NSFontPanel and

            put it inside our new NSPanel's content view, together

            with the OK and Cancel buttons.

         3. Lay out the original content view and the buttons when

            the font panel is shown and whenever it is resized.

         4. Clean up after ourselves.

         PS. Some customization is also done in QCocoaApplication

         validModesForFontPanel:.

    */

    Qt::WindowModality modality = Qt::ApplicationModal;

    if (priv)

        modality = priv->fontDialog()->windowModality();

    bool needButtons = !(options & QFontDialog::NoButtons);

    // don't need our own panel if the title bar isn't visible anyway (in a sheet)

    bool needOwnPanel = (needButtons && modality != Qt::WindowModal);

    bool sharedFontPanelExisted = [NSFontPanel sharedFontPanelExists];

    NSFontPanel *sharedFontPanel = [NSFontPanel sharedFontPanel];

    [sharedFontPanel setHidesOnDeactivate:false];

    // hack to ensure that QCocoaApplication's validModesForFontPanel:

    // implementation is honored

    if (!sharedFontPanelExisted && needOwnPanel) {

        [sharedFontPanel makeKeyAndOrderFront:sharedFontPanel];

        [sharedFontPanel close];

    }

    NSPanel *ourPanel = 0;

    NSView *stolenContentView = 0;

    NSButton *okButton = 0;

    NSButton *cancelButton = 0;

    CGFloat dialogExtraWidth = 0.0;

    CGFloat dialogExtraHeight = 0.0;

    if (!needOwnPanel) {

        // we can reuse the NSFontPanel unchanged

        ourPanel = sharedFontPanel;

    } else {

        // compute dialogExtra{Width,Height}

        dialogExtraWidth = 2.0 * DialogSideMargin;

        dialogExtraHeight = DialogTopMargin + ButtonTopMargin + ButtonMinHeight

                            + ButtonBottomMargin;

        // compute initial contents rectangle

        NSRect contentRect = [sharedFontPanel contentRectForFrameRect:[sharedFontPanel frame]];

        contentRect.size.width += dialogExtraWidth;

        contentRect.size.height += dialogExtraHeight;

        // create the new panel

        ourPanel = [[NSPanel alloc] initWithContentRect:contentRect

                                              styleMask:StyleMask

                                                backing:NSBackingStoreBuffered

                                                  defer:YES];

        [ourPanel setReleasedWhenClosed:YES];

    }

    stolenContentView = [sharedFontPanel contentView];

    if (needButtons) {

        // steal the font panel's contents view

        [stolenContentView retain];

        [sharedFontPanel setContentView:0];

        // create a new content view and add the stolen one as a subview

        NSRect frameRect = { { 0.0, 0.0 }, { 0.0, 0.0 } };

        NSView *ourContentView = [[NSView alloc] initWithFrame:frameRect];

        [ourContentView addSubview:stolenContentView];

        // create OK and Cancel buttons and add these as subviews

        okButton = macCreateButton("&OK", ourContentView);

        cancelButton = macCreateButton("Cancel", ourContentView);

        [ourPanel setContentView:ourContentView];

        [ourPanel setDefaultButtonCell:[okButton cell]];

    }

    // create a delegate and set it

    QCocoaFontPanelDelegate *delegate =

            [[QCocoaFontPanelDelegate alloc] initWithFontPanel:sharedFontPanel

                                             stolenContentView:stolenContentView

                                                      okButton:okButton

                                                  cancelButton:cancelButton

                                                          priv:priv

                                                    extraWidth:dialogExtraWidth

                                                   extraHeight:dialogExtraHeight];

    [ourPanel setDelegate:delegate];