/*
 * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package sun.lwawt.macosx;

import java.awt.*;
import java.awt.Dialog.ModalityType;
import java.awt.event.*;
import java.awt.peer.WindowPeer;
import java.beans.*;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.atomic.AtomicReference;
import java.util.List;
import java.util.Objects;

import javax.swing.*;

import sun.awt.*;
import sun.awt.AWTAccessor.ComponentAccessor;
import sun.awt.AWTAccessor.WindowAccessor;
import sun.java2d.SurfaceData;
import sun.java2d.opengl.CGLSurfaceData;
import sun.lwawt.*;
import sun.util.logging.PlatformLogger;

import com.apple.laf.*;
import com.apple.laf.ClientPropertyApplicator.Property;
import com.sun.awt.AWTUtilities;

public class CPlatformWindow extends CFRetainedResource implements PlatformWindow {
    private native long nativeCreateNSWindow(long nsViewPtr,long ownerPtr, long styleBits, double x, double y, double w, double h);
    private static native void nativeSetNSWindowStyleBits(long nsWindowPtr, int mask, int data);
    private static native void nativeSetNSWindowMenuBar(long nsWindowPtr, long menuBarPtr);
    private static native Insets nativeGetNSWindowInsets(long nsWindowPtr);
    private static native void nativeSetNSWindowBounds(long nsWindowPtr, double x, double y, double w, double h);
    private static native void nativeSetNSWindowMinMax(long nsWindowPtr, double minW, double minH, double maxW, double maxH);
    private static native void nativePushNSWindowToBack(long nsWindowPtr);
    private static native void nativePushNSWindowToFront(long nsWindowPtr);
    private static native void nativeSetNSWindowTitle(long nsWindowPtr, String title);
    private static native void nativeRevalidateNSWindowShadow(long nsWindowPtr);
    private static native void nativeSetNSWindowMinimizedIcon(long nsWindowPtr, long nsImage);
    private static native void nativeSetNSWindowRepresentedFilename(long nsWindowPtr, String representedFilename);
    private static native void nativeSetEnabled(long nsWindowPtr, boolean isEnabled);
    private static native void nativeSynthesizeMouseEnteredExitedEvents();
    private static native void nativeDispose(long nsWindowPtr);
    private static native void nativeEnterFullScreenMode(long nsWindowPtr);
    private static native void nativeExitFullScreenMode(long nsWindowPtr);
    static native CPlatformWindow nativeGetTopmostPlatformWindowUnderMouse();

    // Loger to report issues happened during execution but that do not affect functionality
    private static final PlatformLogger logger = PlatformLogger.getLogger("sun.lwawt.macosx.CPlatformWindow");
    private static final PlatformLogger focusLogger = PlatformLogger.getLogger("sun.lwawt.macosx.focus.CPlatformWindow");

    // for client properties
    public static final String WINDOW_BRUSH_METAL_LOOK = "apple.awt.brushMetalLook";
    public static final String WINDOW_DRAGGABLE_BACKGROUND = "apple.awt.draggableWindowBackground";

    public static final String WINDOW_ALPHA = "Window.alpha";
    public static final String WINDOW_SHADOW = "Window.shadow";

    public static final String WINDOW_STYLE = "Window.style";
    public static final String WINDOW_SHADOW_REVALIDATE_NOW = "apple.awt.windowShadow.revalidateNow";

    public static final String WINDOW_DOCUMENT_MODIFIED = "Window.documentModified";
    public static final String WINDOW_DOCUMENT_FILE = "Window.documentFile";

    public static final String WINDOW_CLOSEABLE = "Window.closeable";
    public static final String WINDOW_MINIMIZABLE = "Window.minimizable";
    public static final String WINDOW_ZOOMABLE = "Window.zoomable";
    public static final String WINDOW_HIDES_ON_DEACTIVATE="Window.hidesOnDeactivate";

    public static final String WINDOW_DOC_MODAL_SHEET = "apple.awt.documentModalSheet";
    public static final String WINDOW_FADE_DELEGATE = "apple.awt._windowFadeDelegate";
    public static final String WINDOW_FADE_IN = "apple.awt._windowFadeIn";
    public static final String WINDOW_FADE_OUT = "apple.awt._windowFadeOut";
    public static final String WINDOW_FULLSCREENABLE = "apple.awt.fullscreenable";


    // Yeah, I know. But it's easier to deal with ints from JNI
    static final int MODELESS = 0;
    static final int DOCUMENT_MODAL = 1;
    static final int APPLICATION_MODAL = 2;
    static final int TOOLKIT_MODAL = 3;

    // window style bits
    static final int _RESERVED_FOR_DATA = 1 << 0;

    // corresponds to native style mask bits
    static final int DECORATED = 1 << 1;
    static final int TEXTURED = 1 << 2;
    static final int UNIFIED = 1 << 3;
    static final int UTILITY = 1 << 4;
    static final int HUD = 1 << 5;
    static final int SHEET = 1 << 6;

    static final int CLOSEABLE = 1 << 7;
    static final int MINIMIZABLE = 1 << 8;

    static final int RESIZABLE = 1 << 9; // both a style bit and prop bit
    static final int NONACTIVATING = 1 << 24;
    static final int IS_DIALOG = 1 << 25;
    static final int IS_MODAL = 1 << 26;
    static final int IS_POPUP = 1 << 27;

    static final int _STYLE_PROP_BITMASK = DECORATED | TEXTURED | UNIFIED | UTILITY | HUD | SHEET | CLOSEABLE | MINIMIZABLE | RESIZABLE;

    // corresponds to method-based properties
    static final int HAS_SHADOW = 1 << 10;
    static final int ZOOMABLE = 1 << 11;

    static final int ALWAYS_ON_TOP = 1 << 15;
    static final int HIDES_ON_DEACTIVATE = 1 << 17;
    static final int DRAGGABLE_BACKGROUND = 1 << 19;
    static final int DOCUMENT_MODIFIED = 1 << 21;
    static final int FULLSCREENABLE = 1 << 23;

    static final int _METHOD_PROP_BITMASK = RESIZABLE | HAS_SHADOW | ZOOMABLE | ALWAYS_ON_TOP | HIDES_ON_DEACTIVATE | DRAGGABLE_BACKGROUND | DOCUMENT_MODIFIED | FULLSCREENABLE;

    // corresponds to callback-based properties
    static final int SHOULD_BECOME_KEY = 1 << 12;
    static final int SHOULD_BECOME_MAIN = 1 << 13;
    static final int MODAL_EXCLUDED = 1 << 16;

    static final int _CALLBACK_PROP_BITMASK = SHOULD_BECOME_KEY | SHOULD_BECOME_MAIN | MODAL_EXCLUDED;

    static int SET(final int bits, final int mask, final boolean value) {
        if (value) return (bits | mask);
        return bits & ~mask;
    }

    static boolean IS(final int bits, final int mask) {
        return (bits & mask) != 0;
    }

    @SuppressWarnings("unchecked")
    static ClientPropertyApplicator<JRootPane, CPlatformWindow> CLIENT_PROPERTY_APPLICATOR = new ClientPropertyApplicator<JRootPane, CPlatformWindow>(new Property[] {
        new Property<CPlatformWindow>(WINDOW_DOCUMENT_MODIFIED) { public void applyProperty(final CPlatformWindow c, final Object value) {
            c.setStyleBits(DOCUMENT_MODIFIED, value == null ? false : Boolean.parseBoolean(value.toString()));
        }},
        new Property<CPlatformWindow>(WINDOW_BRUSH_METAL_LOOK) { public void applyProperty(final CPlatformWindow c, final Object value) {
            c.setStyleBits(TEXTURED, Boolean.parseBoolean(value.toString()));
        }},
        new Property<CPlatformWindow>(WINDOW_ALPHA) { public void applyProperty(final CPlatformWindow c, final Object value) {
            AWTUtilities.setWindowOpacity(c.target, value == null ? 1.0f : Float.parseFloat(value.toString()));
        }},
        new Property<CPlatformWindow>(WINDOW_SHADOW) { public void applyProperty(final CPlatformWindow c, final Object value) {
            c.setStyleBits(HAS_SHADOW, value == null ? true : Boolean.parseBoolean(value.toString()));
        }},
        new Property<CPlatformWindow>(WINDOW_MINIMIZABLE) { public void applyProperty(final CPlatformWindow c, final Object value) {
            c.setStyleBits(MINIMIZABLE, Boolean.parseBoolean(value.toString()));
        }},
        new Property<CPlatformWindow>(WINDOW_CLOSEABLE) { public void applyProperty(final CPlatformWindow c, final Object value) {
            c.setStyleBits(CLOSEABLE, Boolean.parseBoolean(value.toString()));
        }},
        new Property<CPlatformWindow>(WINDOW_ZOOMABLE) { public void applyProperty(final CPlatformWindow c, final Object value) {
            c.setStyleBits(ZOOMABLE, Boolean.parseBoolean(value.toString()));
        }},
        new Property<CPlatformWindow>(WINDOW_FULLSCREENABLE) { public void applyProperty(final CPlatformWindow c, final Object value) {
            c.setStyleBits(FULLSCREENABLE, Boolean.parseBoolean(value.toString()));
        }},
        new Property<CPlatformWindow>(WINDOW_SHADOW_REVALIDATE_NOW) { public void applyProperty(final CPlatformWindow c, final Object value) {
                c.execute(new CFNativeAction() {
                    @Override
                    public void run(long ptr) {
                        nativeRevalidateNSWindowShadow(ptr);
                    }
                });
        }},
        new Property<CPlatformWindow>(WINDOW_DOCUMENT_FILE) { public void applyProperty(final CPlatformWindow c, final Object value) {
            if (value == null || !(value instanceof java.io.File)) {
                c.execute(new CFNativeAction() {
                    @Override
                    public void run(long ptr) {
                        nativeSetNSWindowRepresentedFilename(ptr, null);
                    }
                });
                return;
            }

            final String filename = ((java.io.File)value).getAbsolutePath();
            c.execute(new CFNativeAction() {
                @Override
                public void run(long ptr) {
                    nativeSetNSWindowRepresentedFilename(ptr, filename);
                }
            });
        }}
    }) {
        public CPlatformWindow convertJComponentToTarget(final JRootPane p) {
            Component root = SwingUtilities.getRoot(p);
            if (root == null || (LWWindowPeer)root.getPeer() == null) return null;
            return (CPlatformWindow)((LWWindowPeer)root.getPeer()).getPlatformWindow();
        }
    };

    // Bounds of the native widget but in the Java coordinate system.
    // In order to keep it up-to-date we will update them on
    // 1) setting native bounds via nativeSetBounds() call
    // 2) getting notification from the native level via deliverMoveResizeEvent()
    private Rectangle nativeBounds = new Rectangle(0, 0, 0, 0);
    private volatile boolean isFullScreenMode;
    private boolean isFullScreenAnimationOn;

    private volatile boolean isIconifyAnimationActive;

    private Window target;
    private LWWindowPeer peer;
    protected CPlatformView contentView;
    protected CPlatformWindow owner;
    protected boolean visible = false; // visibility status from native perspective
    private boolean undecorated; // initialized in getInitialStyleBits()
    private Rectangle normalBounds = null; // not-null only for undecorated maximized windows
    private CPlatformResponder responder;

    public CPlatformWindow() {
        super(0, true);
    }

    /*
     * Delegate initialization (create native window and all the
     * related resources).
     */
    @Override // PlatformWindow
    public void initialize(Window _target, LWWindowPeer _peer, PlatformWindow _owner) {
        this.peer = _peer;
        this.target = _target;
        if (_owner instanceof CPlatformWindow) {
            this.owner = (CPlatformWindow)_owner;
        }

        final int styleBits = getInitialStyleBits();

        responder = createPlatformResponder();
        contentView = createContentView();
        contentView.initialize(peer, responder);

        final Rectangle bounds;
        if (!IS(DECORATED, styleBits)) {
            // For undecorated frames the move/resize event does not come if the frame is centered on the screen
            // so we need to set a stub location to force an initial move/resize. Real bounds would be set later.
            bounds = new Rectangle(0, 0, 1, 1);
        } else {
            bounds = _peer.constrainBounds(_target.getBounds());
        }
        final AtomicLong ref = new AtomicLong();
        contentView.execute(new CFNativeAction() {
            @Override
            public void run(final long viewPtr) {
                boolean hasOwnerPtr = false;

                if (owner != null) {
                    hasOwnerPtr = 0L != owner.executeGet(new CFNativeActionGet() {
                        @Override
                        public long run(long ownerPtr) {
                            ref.set(nativeCreateNSWindow(viewPtr, ownerPtr, styleBits,
                                                    bounds.x, bounds.y,
                                                    bounds.width, bounds.height));
                            return 1;
                        }
                    });
            }

            if (!hasOwnerPtr) {
                    ref.set(nativeCreateNSWindow(viewPtr, 0,
                                                 styleBits, bounds.x, bounds.y,
                                                 bounds.width, bounds.height));
                }
            }
        });
        setPtr(ref.get());

        // TODO: implement on top of JObjC bridged class
    //    NSWindow window = JObjC.getInstance().AppKit().NSWindow().getInstance(nativeWindowPtr, JObjCRuntime.getInstance());

        if (target instanceof javax.swing.RootPaneContainer) {
            final javax.swing.JRootPane rootpane = ((javax.swing.RootPaneContainer)target).getRootPane();
            if (rootpane != null) rootpane.addPropertyChangeListener("ancestor", new PropertyChangeListener() {
                public void propertyChange(final PropertyChangeEvent evt) {
                    CLIENT_PROPERTY_APPLICATOR.attachAndApplyClientProperties(rootpane);
                    rootpane.removePropertyChangeListener("ancestor", this);
                }
            });
        }

        validateSurface();
    }

    protected CPlatformResponder createPlatformResponder() {
        return new CPlatformResponder(peer, false);
    }

    protected CPlatformView createContentView() {
        return new CPlatformView();
    }

    protected int getInitialStyleBits() {
        // defaults style bits
        int styleBits = DECORATED | HAS_SHADOW | CLOSEABLE | MINIMIZABLE | ZOOMABLE | RESIZABLE;

        if (isNativelyFocusableWindow()) {
            styleBits = SET(styleBits, SHOULD_BECOME_KEY, true);
            styleBits = SET(styleBits, SHOULD_BECOME_MAIN, true);
        }

        final boolean isFrame = (target instanceof Frame);
        final boolean isDialog = (target instanceof Dialog);
        final boolean isPopup = (target.getType() == Window.Type.POPUP);
        if (isDialog) {
            styleBits = SET(styleBits, MINIMIZABLE, false);
        }

        // Either java.awt.Frame or java.awt.Dialog can be undecorated, however java.awt.Window always is undecorated.
        {
            this.undecorated = isFrame ? ((Frame)target).isUndecorated() : (isDialog ? ((Dialog)target).isUndecorated() : true);
            if (this.undecorated) styleBits = SET(styleBits, DECORATED, false);
        }

        // Either java.awt.Frame or java.awt.Dialog can be resizable, however java.awt.Window is never resizable
        {
            final boolean resizable = isFrame ? ((Frame)target).isResizable() : (isDialog ? ((Dialog)target).isResizable() : false);
            styleBits = SET(styleBits, RESIZABLE, resizable);
            if (!resizable) {
                styleBits = SET(styleBits, RESIZABLE, false);
                styleBits = SET(styleBits, ZOOMABLE, false);
            }
        }

        if (target.isAlwaysOnTop()) {
            styleBits = SET(styleBits, ALWAYS_ON_TOP, true);
        }

        if (target.getModalExclusionType() == Dialog.ModalExclusionType.APPLICATION_EXCLUDE) {
            styleBits = SET(styleBits, MODAL_EXCLUDED, true);
        }

        // If the target is a dialog, popup or tooltip we want it to ignore the brushed metal look.
        if (isPopup) {
            styleBits = SET(styleBits, TEXTURED, false);
            // Popups in applets don't activate applet's process
            styleBits = SET(styleBits, NONACTIVATING, true);
            styleBits = SET(styleBits, IS_POPUP, true);
        }

        if (Window.Type.UTILITY.equals(target.getType())) {
            styleBits = SET(styleBits, UTILITY, true);
        }

        if (target instanceof javax.swing.RootPaneContainer) {
            javax.swing.JRootPane rootpane = ((javax.swing.RootPaneContainer)target).getRootPane();
            Object prop = null;

            prop = rootpane.getClientProperty(WINDOW_BRUSH_METAL_LOOK);
            if (prop != null) {
                styleBits = SET(styleBits, TEXTURED, Boolean.parseBoolean(prop.toString()));
            }

            if (isDialog && ((Dialog)target).getModalityType() == ModalityType.DOCUMENT_MODAL) {
                prop = rootpane.getClientProperty(WINDOW_DOC_MODAL_SHEET);
                if (prop != null) {
                    styleBits = SET(styleBits, SHEET, Boolean.parseBoolean(prop.toString()));
                }
            }

            prop = rootpane.getClientProperty(WINDOW_STYLE);
            if (prop != null) {
                if ("small".equals(prop))  {
                    styleBits = SET(styleBits, UTILITY, true);
                    if (target.isAlwaysOnTop() && rootpane.getClientProperty(WINDOW_HIDES_ON_DEACTIVATE) == null) {
                        styleBits = SET(styleBits, HIDES_ON_DEACTIVATE, true);
                    }
                }
                if ("textured".equals(prop)) styleBits = SET(styleBits, TEXTURED, true);
                if ("unified".equals(prop)) styleBits = SET(styleBits, UNIFIED, true);
                if ("hud".equals(prop)) styleBits = SET(styleBits, HUD, true);
            }

            prop = rootpane.getClientProperty(WINDOW_HIDES_ON_DEACTIVATE);
            if (prop != null) {
                styleBits = SET(styleBits, HIDES_ON_DEACTIVATE, Boolean.parseBoolean(prop.toString()));
            }

            prop = rootpane.getClientProperty(WINDOW_CLOSEABLE);
            if (prop != null) {
                styleBits = SET(styleBits, CLOSEABLE, Boolean.parseBoolean(prop.toString()));
            }

            prop = rootpane.getClientProperty(WINDOW_MINIMIZABLE);
            if (prop != null) {
                styleBits = SET(styleBits, MINIMIZABLE, Boolean.parseBoolean(prop.toString()));
            }

            prop = rootpane.getClientProperty(WINDOW_ZOOMABLE);
            if (prop != null) {
                styleBits = SET(styleBits, ZOOMABLE, Boolean.parseBoolean(prop.toString()));
            }

            prop = rootpane.getClientProperty(WINDOW_FULLSCREENABLE);
            if (prop != null) {
                styleBits = SET(styleBits, FULLSCREENABLE, Boolean.parseBoolean(prop.toString()));
            }

            prop = rootpane.getClientProperty(WINDOW_SHADOW);
            if (prop != null) {
                styleBits = SET(styleBits, HAS_SHADOW, Boolean.parseBoolean(prop.toString()));
            }

            prop = rootpane.getClientProperty(WINDOW_DRAGGABLE_BACKGROUND);
            if (prop != null) {
                styleBits = SET(styleBits, DRAGGABLE_BACKGROUND, Boolean.parseBoolean(prop.toString()));
            }
        }

        if (isDialog) {
            styleBits = SET(styleBits, IS_DIALOG, true);
            if (((Dialog) target).isModal()) {
                styleBits = SET(styleBits, IS_MODAL, true);
            }
        }

        peer.setTextured(IS(TEXTURED, styleBits));

        return styleBits;
    }

    // this is the counter-point to -[CWindow _nativeSetStyleBit:]
    protected void setStyleBits(final int mask, final boolean value) {
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                nativeSetNSWindowStyleBits(ptr, mask, value ? mask : 0);
            }
        });
    }

    private native void _toggleFullScreenMode(final long model);

    public void toggleFullScreen() {
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                _toggleFullScreenMode(ptr);
            }
        });
    }

    @Override // PlatformWindow
    public void setMenuBar(MenuBar mb) {
        final CMenuBar mbPeer = (CMenuBar)LWToolkit.targetToPeer(mb);
        execute(new CFNativeAction() {
            @Override
            public void run(final long nsWindowPtr) {
                if (mbPeer != null) {
                    mbPeer.execute(new CFNativeAction() {
                        @Override
                        public void run(long ptr) {
                            nativeSetNSWindowMenuBar(nsWindowPtr, ptr);
                        }
                    });
                } else {
                    nativeSetNSWindowMenuBar(nsWindowPtr, 0);
                }
            }
        });
    }

    @Override // PlatformWindow
    public void dispose() {
        contentView.dispose();
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                CPlatformWindow.nativeDispose(ptr);
            }
        });
        CPlatformWindow.super.dispose();
    }

    @Override // PlatformWindow
    public FontMetrics getFontMetrics(Font f) {
        // TODO: not implemented
        (new RuntimeException("unimplemented")).printStackTrace();
        return null;
    }

    @Override // PlatformWindow
    public Insets getInsets() {
        final AtomicReference<Insets> ref = new AtomicReference<>();
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                ref.set(nativeGetNSWindowInsets(ptr));
            }
        });
        return ref.get() != null ? ref.get() : new Insets(0, 0, 0, 0);
    }

    @Override // PlatformWindow
    public Point getLocationOnScreen() {
        return new Point(nativeBounds.x, nativeBounds.y);
    }

    @Override
    public GraphicsDevice getGraphicsDevice() {
        return contentView.getGraphicsDevice();
    }

    @Override // PlatformWindow
    public SurfaceData getScreenSurface() {
        // TODO: not implemented
        return null;
    }

    @Override // PlatformWindow
    public SurfaceData replaceSurfaceData() {
        return contentView.replaceSurfaceData();
    }

    @Override // PlatformWindow
    public void setBounds(final int x, final int y, final int w, final int h) {
//        assert CThreading.assertEventQueue();
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                nativeSetNSWindowBounds(ptr, x, y, w, h);
            }
        });
    }

    public boolean isVisible() {
        return this.visible;
    }

    private boolean isMaximized() {
        if (undecorated) {
            return this.normalBounds != null;
        }
        final AtomicBoolean ref = new AtomicBoolean();
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                ref.set(CWrapper.NSWindow.isZoomed(ptr));
            }
        });
        return ref.get();
    }

    private void maximize() {
        if (peer == null || isMaximized()) {
            return;
        }
        if (!undecorated) {
            execute(new CFNativeAction() {
                @Override
                public void run(long ptr) {
                    CWrapper.NSWindow.zoom(ptr);
                }
            });
        } else {
            deliverZoom(true);

            this.normalBounds = peer.getBounds();

            GraphicsConfiguration config = getPeer().getGraphicsConfiguration();
            Insets i = ((CGraphicsDevice)config.getDevice()).getScreenInsets();
            Rectangle toBounds = config.getBounds();
            setBounds(toBounds.x + i.left,
                      toBounds.y + i.top,
                      toBounds.width - i.left - i.right,
                      toBounds.height - i.top - i.bottom);
        }
    }

    private void unmaximize() {
        if (!isMaximized()) {
            return;
        }
        if (!undecorated) {
            execute(new CFNativeAction() {
                @Override
                public void run(long ptr) {
                    CWrapper.NSWindow.zoom(ptr);
                }
            });
        } else {
            deliverZoom(false);

            Rectangle toBounds = this.normalBounds;
            this.normalBounds = null;
            setBounds(toBounds.x, toBounds.y, toBounds.width, toBounds.height);
        }
    }

    @Override // PlatformWindow
    public void setVisible(boolean visible) {
        // Configure stuff
        updateIconImages();
        updateFocusabilityForAutoRequestFocus(false);

        // Actually show or hide the window
        LWWindowPeer blocker = (peer == null)? null : peer.getBlocker();
        if (blocker == null || !visible) {
            // If it ain't blocked, or is being hidden, go regular way
            if (visible) {
                contentView.execute(new CFNativeAction() {
                    @Override
                    public void run(final long viewPtr) {
                        execute(new CFNativeAction() {
                            @Override
                            public void run(long ptr) {
                                CWrapper.NSWindow.makeFirstResponder(ptr,
                                                                     viewPtr);
                            }
                        });
                    }
                });

                final boolean isPopup = (target.getType() == Window.Type.POPUP);
                execute(new CFNativeAction() {
                    @Override
                    public void run(long ptr) {
                        if (isPopup) {
                            // Popups in applets don't activate applet's process
                            CWrapper.NSWindow.orderFrontRegardless(ptr);
                        } else {
                            CWrapper.NSWindow.orderFront(ptr);
                        }

                        boolean isKeyWindow = CWrapper.NSWindow.isKeyWindow(ptr);
                        if (!isKeyWindow) {
                            CWrapper.NSWindow.makeKeyWindow(ptr);
                        }
                    }
                });
            } else {
                execute(new CFNativeAction() {
                    @Override
                    public void run(long ptr) {
                        // immediately hide the window
                        CWrapper.NSWindow.orderOut(ptr);
                        // process the close
                        CWrapper.NSWindow.close(ptr);
                    }
                });
            }
        } else {
            // otherwise, put it in a proper z-order
            CPlatformWindow bw
                    = (CPlatformWindow) blocker.getPlatformWindow();
            bw.execute(new CFNativeAction() {
                @Override
                public void run(final long blockerPtr) {
                    execute(new CFNativeAction() {
                        @Override
                        public void run(long ptr) {
                            CWrapper.NSWindow.orderWindow(ptr,
                                                          CWrapper.NSWindow.NSWindowBelow,
                                                          blockerPtr);
                        }
                    });
                }
            });
        }
        this.visible = visible;

        // Manage the extended state when showing
        if (visible) {
            // Apply the extended state as expected in shared code
            if (target instanceof Frame) {
                int frameState = ((Frame)target).getExtendedState();
                if ((frameState & Frame.ICONIFIED) != 0) {
                    // Treat all state bit masks with ICONIFIED bit as ICONIFIED state.
                    frameState = Frame.ICONIFIED;
                }
                switch (frameState) {
                    case Frame.ICONIFIED:
                        execute(new CFNativeAction() {
                            @Override
                            public void run(long ptr) {
                                CWrapper.NSWindow.miniaturize(ptr);
                            }
                        });
                        break;
                    case Frame.MAXIMIZED_BOTH:
                        maximize();
                        break;
                    default: // NORMAL
                        unmaximize(); // in case it was maximized, otherwise this is a no-op
                        break;
                }
            }
        }

        nativeSynthesizeMouseEnteredExitedEvents();

        // Configure stuff #2
        updateFocusabilityForAutoRequestFocus(true);

        // Manage parent-child relationship when showing
        if (visible) {
            // Order myself above my parent
            if (owner != null && owner.isVisible()) {
                owner.execute(new CFNativeAction() {
                    @Override
                    public void run(final long ownerPtr) {
                        execute(new CFNativeAction() {
                            @Override
                            public void run(long ptr) {
                                CWrapper.NSWindow.orderWindow(ptr, CWrapper.NSWindow.NSWindowAbove, ownerPtr);
                            }
                        });
                    }
                });
                applyWindowLevel(target);
            }

            // Order my own children above myself
            for (Window w : target.getOwnedWindows()) {
                WindowPeer p = (WindowPeer)w.getPeer();
                if (p instanceof LWWindowPeer) {
                    CPlatformWindow pw = (CPlatformWindow)((LWWindowPeer)p).getPlatformWindow();
                    if (pw != null && pw.isVisible()) {
                        pw.execute(new CFNativeAction() {
                            @Override
                            public void run(final long childPtr) {
                                execute(new CFNativeAction() {
                                    @Override
                                    public void run(long ptr) {
                                        CWrapper.NSWindow.orderWindow(childPtr, CWrapper.NSWindow.NSWindowAbove, ptr);
                                    }
                                });
                            }
                        });
                        pw.applyWindowLevel(w);
                    }
                }
            }
        }

        // Deal with the blocker of the window being shown
        if (blocker != null && visible) {
            // Make sure the blocker is above its siblings
            ((CPlatformWindow)blocker.getPlatformWindow()).orderAboveSiblings();
        }
    }

    @Override // PlatformWindow
    public void setTitle(final String title) {
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                nativeSetNSWindowTitle(ptr, title);
            }
        });
    }

    // Should be called on every window key property change.
    @Override // PlatformWindow
    public void updateIconImages() {
        final CImage cImage = getImageForTarget();
        execute(new CFNativeAction() {
            @Override
            public void run(final long ptr) {
                if (cImage == null) {
                    nativeSetNSWindowMinimizedIcon(ptr, 0L);
                } else {
                    cImage.execute(new CFNativeAction() {
                        @Override
                        public void run(long imagePtr) {
                            nativeSetNSWindowMinimizedIcon(ptr, imagePtr);
                        }
                    });
                }
            }
        });
    }

    public SurfaceData getSurfaceData() {
        return contentView.getSurfaceData();
    }

    @Override  // PlatformWindow
    public void toBack() {
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                CPlatformWindow.nativePushNSWindowToBack(ptr);
            }
        });
    }

    @Override  // PlatformWindow
    public void toFront() {
        LWCToolkit lwcToolkit = (LWCToolkit) Toolkit.getDefaultToolkit();
        Window w = DefaultKeyboardFocusManager.getCurrentKeyboardFocusManager().getActiveWindow();
        if( w != null && w.getPeer() != null
                && ((LWWindowPeer)w.getPeer()).getPeerType() == LWWindowPeer.PeerType.EMBEDDED_FRAME
                && !lwcToolkit.isApplicationActive()) {
            lwcToolkit.activateApplicationIgnoringOtherApps();
        }
        updateFocusabilityForAutoRequestFocus(false);
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                CPlatformWindow.nativePushNSWindowToFront(ptr);
            }
        });
        updateFocusabilityForAutoRequestFocus(true);
    }

    @Override
    public void setResizable(boolean resizable) {
        if (peer == null) {
            return;
        }

        setStyleBits(RESIZABLE, resizable);

        // Re-apply the size constraints and the size to ensure the space
        // occupied by the grow box is counted properly
        peer.updateMinimumSize();

        Rectangle bounds = peer.getBounds();
        setBounds(bounds.x, bounds.y, bounds.width, bounds.height);
    }

    @Override
    public void setSizeConstraints(final int minW, final int minH, final int maxW, final int maxH) {
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                nativeSetNSWindowMinMax(ptr, minW, minH, maxW, maxH);
            }
        });
    }

    @Override
    public boolean rejectFocusRequest(CausedFocusEvent.Cause cause) {
        // Cross-app activation requests are not allowed.
        if (cause != CausedFocusEvent.Cause.MOUSE_EVENT &&
            !((LWCToolkit)Toolkit.getDefaultToolkit()).isApplicationActive())
        {
            focusLogger.fine("the app is inactive, so the request is rejected");
            return true;
        }
        return false;
    }

    @Override
    public boolean requestWindowFocus() {
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                if (CWrapper.NSWindow.canBecomeMainWindow(ptr)) {
                    CWrapper.NSWindow.makeMainWindow(ptr);
                }
                CWrapper.NSWindow.makeKeyAndOrderFront(ptr);
            }
        });
        return true;
    }

    @Override
    public boolean isActive() {
        final AtomicBoolean ref = new AtomicBoolean();
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                ref.set(CWrapper.NSWindow.isKeyWindow(ptr));
            }
        });
        return ref.get();
    }

    @Override
    public void updateFocusableWindowState() {
        final boolean isFocusable = isNativelyFocusableWindow();
        setStyleBits(SHOULD_BECOME_KEY | SHOULD_BECOME_MAIN, isFocusable); // set both bits at once
    }

    @Override
    public Graphics transformGraphics(Graphics g) {
        // is this where we can inject a transform for HiDPI?
        return g;
    }

    @Override
    public void setAlwaysOnTop(boolean isAlwaysOnTop) {
        setStyleBits(ALWAYS_ON_TOP, isAlwaysOnTop);
    }

    @Override
    public void setOpacity(final float opacity) {
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                CWrapper.NSWindow.setAlphaValue(ptr, opacity);
            }
        });
    }

    @Override
    public void setOpaque(final boolean isOpaque) {
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                CWrapper.NSWindow.setOpaque(ptr, isOpaque);
            }
        });
        boolean isTextured = (peer == null) ? false : peer.isTextured();
        if (!isTextured) {
            if (!isOpaque) {
                execute(new CFNativeAction() {
                    @Override
                    public void run(long ptr) {
                        CWrapper.NSWindow.setBackgroundColor(ptr, 0);
                    }
                });
            } else if (peer != null) {
                Color color = peer.getBackground();
                if (color != null) {
                    final int rgb = color.getRGB();
                    execute(new CFNativeAction() {
                        @Override
                        public void run(long ptr) {
                            CWrapper.NSWindow.setBackgroundColor(ptr, rgb);
                        }
                    });
                }
            }
        }

        //This is a temporary workaround. Looks like after 7124236 will be fixed
        //the correct place for invalidateShadow() is CGLayer.drawInCGLContext.
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                invalidateShadow();
            }
        });
    }

    @Override
    public void enterFullScreenMode() {
        isFullScreenMode = true;
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                CPlatformWindow.nativeEnterFullScreenMode(ptr);
            }
        });
    }

    @Override
    public void exitFullScreenMode() {
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                CPlatformWindow.nativeExitFullScreenMode(ptr);
            }
        });
        isFullScreenMode = false;
    }

    @Override
    public boolean isFullScreenMode() {
        return isFullScreenMode;
    }

    @Override
    public void setWindowState(int windowState) {
        if (peer == null || !peer.isVisible()) {
            // setVisible() applies the state
            return;
        }

        int prevWindowState = peer.getState();
        if (prevWindowState == windowState) return;

        if ((windowState & Frame.ICONIFIED) != 0) {
            // Treat all state bit masks with ICONIFIED bit as ICONIFIED state.
            windowState = Frame.ICONIFIED;
        }
        switch (windowState) {
            case Frame.ICONIFIED:
                if (prevWindowState == Frame.MAXIMIZED_BOTH) {
                    // let's return into the normal states first
                    // the zoom call toggles between the normal and the max states
                    unmaximize();
                }
                execute(new CFNativeAction() {
                    @Override
                    public void run(long ptr) {
                        CWrapper.NSWindow.miniaturize(ptr);
                    }
                });
                break;
            case Frame.MAXIMIZED_BOTH:
                if (prevWindowState == Frame.ICONIFIED) {
                    // let's return into the normal states first
                    execute(new CFNativeAction() {
                        @Override
                        public void run(long ptr) {
                            CWrapper.NSWindow.deminiaturize(ptr);
                        }
                    });
                }
                maximize();
                break;
            case Frame.NORMAL:
                if (prevWindowState == Frame.ICONIFIED) {
                    execute(new CFNativeAction() {
                        @Override
                        public void run(long ptr) {
                            CWrapper.NSWindow.deminiaturize(ptr);
                        }
                    });
                } else if (prevWindowState == Frame.MAXIMIZED_BOTH) {
                    // the zoom call toggles between the normal and the max states
                    unmaximize();
                }
                break;
            default:
                throw new RuntimeException("Unknown window state: " + windowState);
        }

        nativeSynthesizeMouseEnteredExitedEvents();

        // NOTE: the SWP.windowState field gets updated to the newWindowState
        //       value when the native notification comes to us
    }

    @Override
    public void setModalBlocked(final boolean blocked) {
        if (target.getModalExclusionType() == Dialog.ModalExclusionType.APPLICATION_EXCLUDE) {
            return;
        }

        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                nativeSetEnabled(ptr, !blocked);
            }
        });
    }


    public final void invalidateShadow(){
        execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                nativeRevalidateNSWindowShadow(ptr);
            }
        });
    }

    // ----------------------------------------------------------------------
    //                          UTILITY METHODS
    // ----------------------------------------------------------------------

    /*
     * Find image to install into Title or into Application icon.
     * First try icons installed for toplevel. If there is no icon
     * use default Duke image.
     * This method shouldn't return null.
     */
    private CImage getImageForTarget() {
        List<Image> icons = target.getIconImages();
        if (icons == null || icons.size() == 0) {
            return null;
        }
        return CImage.getCreator().createFromImages(icons);
    }

    /*
     * Returns LWWindowPeer associated with this delegate.
     */
    @Override
    public LWWindowPeer getPeer() {
        return peer;
    }

    @Override
    public boolean isUnderMouse() {
        return contentView.isUnderMouse();
    }

    public CPlatformView getContentView() {
        return contentView;
    }

    @Override
    public long getLayerPtr() {
        return contentView.getWindowLayerPtr();
    }

    private void validateSurface() {
        SurfaceData surfaceData = getSurfaceData();
        if (surfaceData instanceof CGLSurfaceData) {
            ((CGLSurfaceData)surfaceData).validate();
        }
    }

    void flushBuffers() {
        if (isVisible() && !nativeBounds.isEmpty() && !isFullScreenMode) {
            try {
                LWCToolkit.invokeAndWait(new Runnable() {
                    @Override
                    public void run() {
                        //Posting an empty to flush the EventQueue without blocking the main thread
                    }
                }, target);
            } catch (InvocationTargetException e) {
                e.printStackTrace();
            }
        }
    }

    
Helper method to get a pointer to the native view from the PlatformWindow.
/**
     * Helper method to get a pointer to the native view from the PlatformWindow.
     */
    static long getNativeViewPtr(PlatformWindow platformWindow) {
        long nativePeer = 0L;
        if (platformWindow instanceof CPlatformWindow) {
            nativePeer = ((CPlatformWindow) platformWindow).getContentView().getAWTView();
        } else if (platformWindow instanceof CViewPlatformEmbeddedFrame){
            nativePeer = ((CViewPlatformEmbeddedFrame) platformWindow).getNSViewPtr();
        }
        return nativePeer;
    }

    
Callbacks from the AWTWindow and AWTView objc classes.
/*************************************************************
     * Callbacks from the AWTWindow and AWTView objc classes.
     *************************************************************/
    private void deliverWindowFocusEvent(boolean gained, CPlatformWindow opposite){
        // Fix for 7150349: ingore "gained" notifications when the app is inactive.
        if (gained && !((LWCToolkit)Toolkit.getDefaultToolkit()).isApplicationActive()) {
            focusLogger.fine("the app is inactive, so the notification is ignored");
            return;
        }

        LWWindowPeer oppositePeer = (opposite == null)? null : opposite.getPeer();
        responder.handleWindowFocusEvent(gained, oppositePeer);
    }

    protected void deliverMoveResizeEvent(int x, int y, int width, int height,
                                        boolean byUser) {
        final Rectangle oldB = nativeBounds;
        nativeBounds = new Rectangle(x, y, width, height);
        if (peer != null) {
            peer.notifyReshape(x, y, width, height);
            // System-dependent appearance optimization.
            if ((byUser && !oldB.getSize().equals(nativeBounds.getSize()))
                    || isFullScreenAnimationOn) {
                flushBuffers();
            }
        }
    }

    private void deliverWindowClosingEvent() {
        if (peer != null && peer.getBlocker() == null) {
            peer.postEvent(new WindowEvent(target, WindowEvent.WINDOW_CLOSING));
        }
    }

    private void deliverIconify(final boolean iconify) {
        if (peer != null) {
            peer.notifyIconify(iconify);
        }
        if (iconify) {
            isIconifyAnimationActive = false;
        }
    }

    private void deliverZoom(final boolean isZoomed) {
        if (peer != null) {
            peer.notifyZoom(isZoomed);
        }
    }

    private void deliverNCMouseDown() {
        if (peer != null) {
            peer.notifyNCMouseDown();
        }
    }

    /*
     * Our focus model is synthetic and only non-simple window
     * may become natively focusable window.
     */
    private boolean isNativelyFocusableWindow() {
        if (peer == null) {
            return false;
        }

        return !peer.isSimpleWindow() && target.getFocusableWindowState();
    }

    /*
     * An utility method for the support of the auto request focus.
     * Updates the focusable state of the window under certain
     * circumstances.
     */
    private void updateFocusabilityForAutoRequestFocus(boolean isFocusable) {
        if (target.isAutoRequestFocus() || !isNativelyFocusableWindow()) return;
        setStyleBits(SHOULD_BECOME_KEY | SHOULD_BECOME_MAIN, isFocusable); // set both bits at once
    }

    private boolean checkBlocking() {
        LWWindowPeer blocker = (peer == null)? null : peer.getBlocker();
        if (blocker == null) {
            return false;
        }

        if (blocker instanceof CPrinterDialogPeer) {
            return true;
        }

        CPlatformWindow pWindow = (CPlatformWindow)blocker.getPlatformWindow();

        pWindow.orderAboveSiblings();

        pWindow.execute(new CFNativeAction() {
            @Override
            public void run(long ptr) {
                CWrapper.NSWindow.orderFrontRegardless(ptr);
                CWrapper.NSWindow.makeKeyAndOrderFront(ptr);
                CWrapper.NSWindow.makeMainWindow(ptr);
            }
        });
        return true;
    }

    private boolean isIconified() {
        boolean isIconified = false;
        if (target instanceof Frame) {
            int state = ((Frame)target).getExtendedState();
            if ((state & Frame.ICONIFIED) != 0) {
                isIconified = true;
            }
        }
        return isIconifyAnimationActive || isIconified;
    }

    private boolean isOneOfOwnersOrSelf(CPlatformWindow window) {
        while (window != null) {
            if (this == window) {
                return true;
            }
            window = window.owner;
        }
        return false;
    }

    private CPlatformWindow getRootOwner() {
        CPlatformWindow rootOwner = this;
        while (rootOwner.owner != null) {
            rootOwner = rootOwner.owner;
        }
        return rootOwner;
    }

    private void orderAboveSiblings() {
        // Recursively pop up the windows from the very bottom, (i.e. root owner) so that
        // the windows are ordered above their nearest owner; ancestors of the window,
        // which is going to become 'main window', are placed above their siblings.
        CPlatformWindow rootOwner = getRootOwner();
        if (rootOwner.isVisible() && !rootOwner.isIconified()) {
            rootOwner.execute(new CFNativeAction() {
                @Override
                public void run(long ptr) {
                    CWrapper.NSWindow.orderFront(ptr);
                }
            });
        }
        // Do not order child windows of iconified owner.
        if (!rootOwner.isIconified()) {
            final WindowAccessor windowAccessor = AWTAccessor.getWindowAccessor();
            orderAboveSiblingsImpl(windowAccessor.getOwnedWindows(rootOwner.target));
        }
    }

    private void orderAboveSiblingsImpl(Window[] windows) {
        ArrayList<Window> childWindows = new ArrayList<Window>();

        final ComponentAccessor componentAccessor = AWTAccessor.getComponentAccessor();
        final WindowAccessor windowAccessor = AWTAccessor.getWindowAccessor();

        // Go through the list of windows and perform ordering.
        for (Window w : windows) {
            boolean iconified = false;
            final Object p = componentAccessor.getPeer(w);
            if (p instanceof LWWindowPeer) {
                final CPlatformWindow pw = (CPlatformWindow)((LWWindowPeer)p).getPlatformWindow();
                iconified = isIconified();
                if (pw != null && pw.isVisible() && !iconified) {
                    // If the window is one of ancestors of 'main window' or is going to become main by itself,
                    // the window should be ordered above its siblings; otherwise the window is just ordered
                    // above its nearest parent.
                    if (pw.isOneOfOwnersOrSelf(this)) {
                        pw.execute(new CFNativeAction() {
                            @Override
                            public void run(long ptr) {
                                CWrapper.NSWindow.orderFront(ptr);
                            }
                        });
                    } else {
                        pw.owner.execute(new CFNativeAction() {
                            @Override
                            public void run(final long ownerPtr) {
                                pw.execute(new CFNativeAction() {
                                    @Override
                                    public void run(long ptr) {
                                        CWrapper.NSWindow.orderWindow(ptr, CWrapper.NSWindow.NSWindowAbove, ownerPtr);
                                    }
                                });
                            }
                        });
                    }
                    pw.applyWindowLevel(w);
                }
            }
            // Retrieve the child windows for each window from the list except iconified ones
            // and store them for future use.
            // Note: we collect data about child windows even for invisible owners, since they may have
            // visible children.
            if (!iconified) {
                childWindows.addAll(Arrays.asList(windowAccessor.getOwnedWindows(w)));
            }
        }
        // If some windows, which have just been ordered, have any child windows, let's start new iteration
        // and order these child windows.
        if (!childWindows.isEmpty()) {
            orderAboveSiblingsImpl(childWindows.toArray(new Window[0]));
        }
    }

    protected void applyWindowLevel(Window target) {
        if (target.isAlwaysOnTop() && target.getType() != Window.Type.POPUP) {
            execute(new CFNativeAction() {
                @Override
                public void run(long ptr) {
                    CWrapper.NSWindow.setLevel(ptr, CWrapper.NSWindow.NSFloatingWindowLevel);
                }
            });
        } else if (target.getType() == Window.Type.POPUP) {
            execute(new CFNativeAction() {
                @Override
                public void run(long ptr) {
                    CWrapper.NSWindow.setLevel(ptr, CWrapper.NSWindow.NSPopUpMenuWindowLevel);
                }
            });
        }
    }

    // ----------------------------------------------------------------------
    //                          NATIVE CALLBACKS
    // ----------------------------------------------------------------------

    private void windowWillMiniaturize() {
        isIconifyAnimationActive = true;
    }

    private void windowDidBecomeMain() {
        assert CThreading.assertAppKit();

        if (checkBlocking()) return;
        // If it's not blocked, make sure it's above its siblings
        orderAboveSiblings();
    }

    private void windowWillEnterFullScreen() {
        isFullScreenAnimationOn = true;
    }

    private void windowDidEnterFullScreen() {
        isFullScreenAnimationOn = false;
    }

    private void windowWillExitFullScreen() {
        isFullScreenAnimationOn = true;
    }

    private void windowDidExitFullScreen() {
        isFullScreenAnimationOn = false;
    }
}