/*

 * Copyright (c) 2003, 2013, 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.awt.X11;

import java.awt.*;

import java.awt.geom.Point2D;

import java.lang.ref.WeakReference;

import sun.awt.IconInfo;

import sun.awt.AWTAccessor;

import sun.awt.SunToolkit;

class XWarningWindow extends XWindow {

    private static final int SHOWING_DELAY = 330;

    private static final int HIDING_DELAY = 2000;

    private final Window ownerWindow;

    private WeakReference<XWindowPeer> ownerPeer;

    private long parentWindow;

    private static final String OWNER = "OWNER";

    private InfoWindow.Tooltip tooltip;

    /**

     * Animation stage.

     */

    private volatile int currentIcon = 0;

    /* -1 - uninitialized.

     * 0 - 16x16

     * 1 - 24x24

     * 2 - 32x32

     * 3 - 48x48

     */

    private int currentSize = -1;

    private static IconInfo[][] icons;

    private static IconInfo getSecurityIconInfo(int size, int num) {

        synchronized (XWarningWindow.class) {

            if (icons == null) {

                icons = new IconInfo[4][3];

                if (XlibWrapper.dataModel == 32) {

                    icons[0][0] = new IconInfo(sun.awt.AWTIcon32_security_icon_bw16_png.security_icon_bw16_png);

                    icons[0][1] = new IconInfo(sun.awt.AWTIcon32_security_icon_interim16_png.security_icon_interim16_png);

                    icons[0][2] = new IconInfo(sun.awt.AWTIcon32_security_icon_yellow16_png.security_icon_yellow16_png);

                    icons[1][0] = new IconInfo(sun.awt.AWTIcon32_security_icon_bw24_png.security_icon_bw24_png);

                    icons[1][1] = new IconInfo(sun.awt.AWTIcon32_security_icon_interim24_png.security_icon_interim24_png);

                    icons[1][2] = new IconInfo(sun.awt.AWTIcon32_security_icon_yellow24_png.security_icon_yellow24_png);

                    icons[2][0] = new IconInfo(sun.awt.AWTIcon32_security_icon_bw32_png.security_icon_bw32_png);

                    icons[2][1] = new IconInfo(sun.awt.AWTIcon32_security_icon_interim32_png.security_icon_interim32_png);

                    icons[2][2] = new IconInfo(sun.awt.AWTIcon32_security_icon_yellow32_png.security_icon_yellow32_png);

                    icons[3][0] = new IconInfo(sun.awt.AWTIcon32_security_icon_bw48_png.security_icon_bw48_png);

                    icons[3][1] = new IconInfo(sun.awt.AWTIcon32_security_icon_interim48_png.security_icon_interim48_png);

                    icons[3][2] = new IconInfo(sun.awt.AWTIcon32_security_icon_yellow48_png.security_icon_yellow48_png);

                } else {

                    icons[0][0] = new IconInfo(sun.awt.AWTIcon64_security_icon_bw16_png.security_icon_bw16_png);

                    icons[0][1] = new IconInfo(sun.awt.AWTIcon64_security_icon_interim16_png.security_icon_interim16_png);

                    icons[0][2] = new IconInfo(sun.awt.AWTIcon64_security_icon_yellow16_png.security_icon_yellow16_png);

                    icons[1][0] = new IconInfo(sun.awt.AWTIcon64_security_icon_bw24_png.security_icon_bw24_png);

                    icons[1][1] = new IconInfo(sun.awt.AWTIcon64_security_icon_interim24_png.security_icon_interim24_png);

                    icons[1][2] = new IconInfo(sun.awt.AWTIcon64_security_icon_yellow24_png.security_icon_yellow24_png);

                    icons[2][0] = new IconInfo(sun.awt.AWTIcon64_security_icon_bw32_png.security_icon_bw32_png);

                    icons[2][1] = new IconInfo(sun.awt.AWTIcon64_security_icon_interim32_png.security_icon_interim32_png);

                    icons[2][2] = new IconInfo(sun.awt.AWTIcon64_security_icon_yellow32_png.security_icon_yellow32_png);

                    icons[3][0] = new IconInfo(sun.awt.AWTIcon64_security_icon_bw48_png.security_icon_bw48_png);

                    icons[3][1] = new IconInfo(sun.awt.AWTIcon64_security_icon_interim48_png.security_icon_interim48_png);

                    icons[3][2] = new IconInfo(sun.awt.AWTIcon64_security_icon_yellow48_png.security_icon_yellow48_png);

                }

            }

        }

        final int sizeIndex = size % icons.length;

        return icons[sizeIndex][num % icons[sizeIndex].length];

    }

    private void updateIconSize() {

        int newSize = -1;

        if (ownerWindow != null) {

            Insets insets = ownerWindow.getInsets();

            int max = Math.max(insets.top, Math.max(insets.bottom,

                        Math.max(insets.left, insets.right)));

            if (max < 24) {

                newSize = 0;

            } else if (max < 32) {

                newSize = 1;

            } else if (max < 48) {

                newSize = 2;

            } else {

                newSize = 3;

            }

        }

        // Make sure we have a valid size

        if (newSize == -1) {

            newSize = 0;

        }

        // Note: this is not the most wise solution to use awtLock here,

        // this should have been sync'ed with the stateLock. However,

        // the awtLock must be taken first (see XBaseWindow.getStateLock()),

        // and we need the awtLock anyway to update the shape of the icon.

        // So it's easier to use just one lock instead.

        XToolkit.awtLock();

        try {

            if (newSize != currentSize) {

                currentSize = newSize;

                IconInfo ico = getSecurityIconInfo(currentSize, 0);

                XlibWrapper.SetBitmapShape(XToolkit.getDisplay(), getWindow(),

                        ico.getWidth(), ico.getHeight(), ico.getIntData());

                AWTAccessor.getWindowAccessor().setSecurityWarningSize(

                        ownerWindow, ico.getWidth(), ico.getHeight());

            }

        } finally {

            XToolkit.awtUnlock();

        }

    }

    private IconInfo getSecurityIconInfo() {

        updateIconSize();

        return getSecurityIconInfo(currentSize, currentIcon);

    }

    XWarningWindow(final Window ownerWindow, long parentWindow, XWindowPeer ownerPeer) {

        super(new XCreateWindowParams(new Object[] {

                        TARGET, ownerWindow,

                        OWNER, Long.valueOf(parentWindow)

        }));

        this.ownerWindow = ownerWindow;

        this.parentWindow = parentWindow;

        this.tooltip = new InfoWindow.Tooltip(null, getTarget(),

                new InfoWindow.Tooltip.LiveArguments() {

                    public boolean isDisposed() {

                        return XWarningWindow.this.isDisposed();

                    }

                    public Rectangle getBounds() {

                        return XWarningWindow.this.getBounds();

                    }

                    public String getTooltipString() {

                        return XWarningWindow.this.ownerWindow.getWarningString();

                    }

                });

        this.ownerPeer = new WeakReference<XWindowPeer>(ownerPeer);

    }

    private void requestNoTaskbar() {

        XNETProtocol netProtocol = XWM.getWM().getNETProtocol();

        if (netProtocol != null) {

            netProtocol.requestState(this, netProtocol.XA_NET_WM_STATE_SKIP_TASKBAR, true);

        }

    }

    @Override

    void postInit(XCreateWindowParams params) {

        super.postInit(params);

        XToolkit.awtLock();

        try {

            XWM.setMotifDecor(this, false, 0, 0);

            XWM.setOLDecor(this, false, 0);

            long parentWindow = ((Long)params.get(OWNER)).longValue();

            XlibWrapper.XSetTransientFor(XToolkit.getDisplay(),

                    getWindow(), parentWindow);

            XWMHints hints = getWMHints();

            hints.set_flags(hints.get_flags() | (int)XUtilConstants.InputHint | (int)XUtilConstants.StateHint);

            hints.set_input(false);

            hints.set_initial_state(XUtilConstants.NormalState);

            XlibWrapper.XSetWMHints(XToolkit.getDisplay(), getWindow(), hints.pData);

            initWMProtocols();

            requestNoTaskbar();

        } finally {

            XToolkit.awtUnlock();

        }

    }

    /**

     * @param x,y,w,h coordinates of the untrusted window

     */

    public void reposition(int x, int y, int w, int h) {

        Point2D point = AWTAccessor.getWindowAccessor().

            calculateSecurityWarningPosition(ownerWindow,

                x, y, w, h);

        reshape((int)point.getX(), (int)point.getY(), getWidth(), getHeight());

    }

    protected String getWMName() {

        return "Warning window";

    }

    public Graphics getGraphics() {

        if ((surfaceData == null) || (ownerWindow == null)) return null;

        return getGraphics(surfaceData,

                                 getColor(),

                                 getBackground(),

                                 getFont());

    }

    void paint(Graphics g, int x, int y, int width, int height) {

        g.drawImage(getSecurityIconInfo().getImage(), 0, 0, null);

    }

    String getWarningString() {

        return ownerWindow.getWarningString();

    }

    int getWidth() {

        return getSecurityIconInfo().getWidth();

    }

    int getHeight() {

        return getSecurityIconInfo().getHeight();

    }

    Color getBackground() {

        return SystemColor.window;

    }

    Color getColor() {

        return Color.black;

    }

    Font getFont () {

        return ownerWindow.getFont();

    }

    @Override

    public void repaint() {

        final Rectangle bounds = getBounds();

        final Graphics g = getGraphics();

        if (g != null) {

            try {

                paint(g, 0, 0, bounds.width, bounds.height);

            } finally {

                g.dispose();

            }

        }

    }

    @Override

    public void handleExposeEvent(XEvent xev) {

        super.handleExposeEvent(xev);

        XExposeEvent xe = xev.get_xexpose();

        SunToolkit.executeOnEventHandlerThread(target,

                new Runnable() {

                    public void run() {

                        final Graphics g = getGraphics();

                        if (g != null) {

                            try {

                                paint(g, x, y, width, height);

                            } finally {

                                g.dispose();

                            }

                        }

                    }

                });

    }

    @Override

    protected boolean isEventDisabled(XEvent e) {

        return true;

    }

    /** Send a synthetic UnmapNotify in order to withdraw the window.

     */

    private void withdraw() {

        XEvent req = new XEvent();

        try {

            long root;

            XToolkit.awtLock();

            try {

                root = XlibWrapper.RootWindow(XToolkit.getDisplay(), getScreenNumber());

            }

            finally {

                XToolkit.awtUnlock();

            }

            req.set_type(XConstants.UnmapNotify);

            XUnmapEvent umev = req.get_xunmap();

            umev.set_event(root);

            umev.set_window(getWindow());

            umev.set_from_configure(false);

            XToolkit.awtLock();

            try {

                XlibWrapper.XSendEvent(XToolkit.getDisplay(),

                        root,

                        false,

                        XConstants.SubstructureRedirectMask | XConstants.SubstructureNotifyMask,

                        req.pData);

            }

            finally {

                XToolkit.awtUnlock();

            }

        } finally {

            req.dispose();

        }

    }

    @Override

    protected void stateChanged(long time, int oldState, int newState) {

        if (newState == XUtilConstants.IconicState) {

            super.xSetVisible(false);

            withdraw();

        }

    }

    @Override

    protected void setMouseAbove(boolean above) {

        super.setMouseAbove(above);

        XWindowPeer p = ownerPeer.get();

        if (p != null) {

            p.updateSecurityWarningVisibility();

        }

    }

    @Override

    protected void enterNotify(long window) {

        super.enterNotify(window);

        if (window == getWindow()) {

            tooltip.enter();

        }

    }

    @Override

    protected void leaveNotify(long window) {

        super.leaveNotify(window);

        if (window == getWindow()) {

            tooltip.exit();

        }

    }

    @Override

    public void xSetVisible(boolean visible) {

        super.xSetVisible(visible);

        // The _NET_WM_STATE_SKIP_TASKBAR got reset upon hiding/showing,

        // so we request it every time whenever we change the visibility.

        requestNoTaskbar();

    }

    private final Runnable hidingTask = new Runnable() {

        public void run() {

            xSetVisible(false);

        }

    };

    private final Runnable showingTask = new Runnable() {

        public void run() {

            if (!isVisible()) {

                xSetVisible(true);

                updateIconSize();

                XWindowPeer peer = ownerPeer.get();

                if (peer != null) {

                    peer.repositionSecurityWarning();

                }

            }

            repaint();

            if (currentIcon > 0) {

                currentIcon--;

                XToolkit.schedule(showingTask, SHOWING_DELAY);

            }

        }

    };

    public void setSecurityWarningVisible(boolean visible, boolean doSchedule) {

        if (visible) {

            XToolkit.remove(hidingTask);

            XToolkit.remove(showingTask);

            if (isVisible()) {

                currentIcon = 0;

            } else {

                currentIcon = 3;

            }

            if (doSchedule) {

                XToolkit.schedule(showingTask, 1);

            } else {

                showingTask.run();

            }

        } else {

            XToolkit.remove(showingTask);

            XToolkit.remove(hidingTask);

            if (!isVisible()) {

                return;

            }

            if (doSchedule) {

                XToolkit.schedule(hidingTask, HIDING_DELAY);

            } else {

                hidingTask.run();

            }

        }

    }

}