/*

 * 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

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 */

package sun.awt.X11;

import java.awt.*;

import java.awt.event.*;

import java.awt.image.ColorModel;

import java.awt.image.ImageObserver;

import java.awt.image.ImageProducer;

import java.awt.image.VolatileImage;

import java.awt.peer.*;

import sun.java2d.pipe.Region;

import sun.awt.*;

public class XEmbedChildProxyPeer implements ComponentPeer, XEventDispatcher{

    XEmbeddingContainer container;

    XEmbedChildProxy proxy;

    long handle;

    XEmbedChildProxyPeer(XEmbedChildProxy proxy) {

        this.container = proxy.getEmbeddingContainer();

        this.handle = proxy.getHandle();

        this.proxy = proxy;

        initDispatching();

    }

    void initDispatching() {

        XToolkit.awtLock();

        try {

            XToolkit.addEventDispatcher(handle, this);

            XlibWrapper.XSelectInput(XToolkit.getDisplay(), handle,

                    XConstants.StructureNotifyMask | XConstants.PropertyChangeMask);

        }

        finally {

            XToolkit.awtUnlock();

        }

        container.notifyChildEmbedded(handle);

    }

    public boolean isObscured() { return false; }

    public boolean canDetermineObscurity() { return false; }

    public void                 setVisible(boolean b) {

        if (!b) {

            XToolkit.awtLock();

            try {

                XlibWrapper.XUnmapWindow(XToolkit.getDisplay(), handle);

            }

            finally {

                XToolkit.awtUnlock();

            }

        } else {

            XToolkit.awtLock();

            try {

                XlibWrapper.XMapWindow(XToolkit.getDisplay(), handle);

            }

            finally {

                XToolkit.awtUnlock();

            }

        }

    }

    public void setEnabled(boolean b) {}

    public void paint(Graphics g) {}

    public void print(Graphics g) {}

    public void setBounds(int x, int y, int width, int height, int op) {

        // Unimplemeneted: Check for min/max hints for non-resizable

        XToolkit.awtLock();

        try {

            XlibWrapper.XMoveResizeWindow(XToolkit.getDisplay(), handle, x, y, width, height);

        }

        finally {

            XToolkit.awtUnlock();

        }

    }

    public void handleEvent(AWTEvent e) {

        switch (e.getID()) {

          case FocusEvent.FOCUS_GAINED:

              XKeyboardFocusManagerPeer.getInstance().setCurrentFocusOwner(proxy);

              container.focusGained(handle);

              break;

          case FocusEvent.FOCUS_LOST:

              XKeyboardFocusManagerPeer.getInstance().setCurrentFocusOwner(null);

              container.focusLost(handle);

              break;

          case KeyEvent.KEY_PRESSED:

          case KeyEvent.KEY_RELEASED:

              if (!((InputEvent)e).isConsumed()) {

                  container.forwardKeyEvent(handle, (KeyEvent)e);

              }

              break;

        }

    }

    public void                coalescePaintEvent(PaintEvent e) {}

    public Point                getLocationOnScreen() {

        XWindowAttributes attr = new XWindowAttributes();

        XToolkit.awtLock();

        try{

            XlibWrapper.XGetWindowAttributes(XToolkit.getDisplay(), handle, attr.pData);

            return new Point(attr.get_x(), attr.get_y());

        } finally {

            XToolkit.awtUnlock();

            attr.dispose();

        }

    }

    public Dimension            getPreferredSize() {

        XToolkit.awtLock();

        long p_hints = XlibWrapper.XAllocSizeHints();

        try {

            XSizeHints hints = new XSizeHints(p_hints);

            XlibWrapper.XGetWMNormalHints(XToolkit.getDisplay(), handle, p_hints, XlibWrapper.larg1);

            Dimension res = new Dimension(hints.get_width(), hints.get_height());

            return res;

        } finally {

            XlibWrapper.XFree(p_hints);

            XToolkit.awtUnlock();

        }

    }

    public Dimension            getMinimumSize() {

        XToolkit.awtLock();

        long p_hints = XlibWrapper.XAllocSizeHints();

        try {

            XSizeHints hints = new XSizeHints(p_hints);

            XlibWrapper.XGetWMNormalHints(XToolkit.getDisplay(), handle, p_hints, XlibWrapper.larg1);

            Dimension res = new Dimension(hints.get_min_width(), hints.get_min_height());

            return res;

        } finally {

            XlibWrapper.XFree(p_hints);

            XToolkit.awtUnlock();

        }

    }

    public ColorModel           getColorModel() { return null; }

    public Toolkit              getToolkit() { return Toolkit.getDefaultToolkit(); }

    public Graphics             getGraphics() { return null; }

    public FontMetrics          getFontMetrics(Font font) { return null; }

    public void         dispose() {

        container.detachChild(handle);

    }

    public void         setForeground(Color c) {}

    public void         setBackground(Color c) {}

    public void         setFont(Font f) {}

    public void                 updateCursorImmediately() {}

    void postEvent(AWTEvent event) {

        XToolkit.postEvent(XToolkit.targetToAppContext(proxy), event);

    }

    boolean simulateMotifRequestFocus(Component lightweightChild, boolean temporary,

                                      boolean focusedWindowChangeAllowed, long time)

    {

        if (lightweightChild == null) {

            lightweightChild = (Component)proxy;

        }

        Component currentOwner = XKeyboardFocusManagerPeer.getInstance().getCurrentFocusOwner();

        if (currentOwner != null && !currentOwner.isDisplayable()) {

            currentOwner = null;

        }

        FocusEvent  fg = new FocusEvent(lightweightChild, FocusEvent.FOCUS_GAINED, false, currentOwner );

        FocusEvent fl = null;

        if (currentOwner != null) {

            fl = new FocusEvent(currentOwner, FocusEvent.FOCUS_LOST, false, lightweightChild);

        }

        // TODO: do we need to wrap in sequenced?

        if (fl != null) {

            postEvent(XComponentPeer.wrapInSequenced(fl));

        }

        postEvent(XComponentPeer.wrapInSequenced(fg));

        // End of Motif compatibility code

        return true;

    }

    public boolean requestFocus(Component lightweightChild,

                                boolean temporary,

                                boolean focusedWindowChangeAllowed,

                                long time,

                                FocusEvent.Cause cause)

    {

        int result = XKeyboardFocusManagerPeer

            .shouldNativelyFocusHeavyweight(proxy, lightweightChild,

                                            temporary, false, time, cause);

        switch (result) {

          case XKeyboardFocusManagerPeer.SNFH_FAILURE:

              return false;

          case XKeyboardFocusManagerPeer.SNFH_SUCCESS_PROCEED:

              // Currently we just generate focus events like we deal with lightweight instead of calling

              // XSetInputFocus on native window

              /**

               * The problems with requests in non-focused window arise because shouldNativelyFocusHeavyweight

               * checks that native window is focused while appropriate WINDOW_GAINED_FOCUS has not yet

               * been processed - it is in EventQueue. Thus, SNFH allows native request and stores request record

               * in requests list - and it breaks our requests sequence as first record on WGF should be the last focus

               * owner which had focus before WLF. So, we should not add request record for such requests

               * but store this component in mostRecent - and return true as before for compatibility.

               */

              Container parent = proxy.getParent();

              // Search for parent window

              while (parent != null && !(parent instanceof Window)) {

                  parent = parent.getParent();

              }

              if (parent != null) {

                  Window parentWindow = (Window)parent;

                  // and check that it is focused

                  if (!parentWindow.isFocused() &&

                      XKeyboardFocusManagerPeer.getInstance().getCurrentFocusedWindow() == parentWindow) {

                      // if it is not - skip requesting focus on Solaris

                      // but return true for compatibility.

                      return true;

                  }

              }

              // NOTE: We simulate heavyweight behavior of Motif - component receives focus right

              // after request, not after event. Normally, we should better listen for event

              // by listeners.

              // TODO: consider replacing with XKeyboardFocusManagerPeer.deliverFocus

              return simulateMotifRequestFocus(lightweightChild, temporary, focusedWindowChangeAllowed, time);

              // Motif compatibility code

          case XKeyboardFocusManagerPeer.SNFH_SUCCESS_HANDLED:

              // Either lightweight or excessive requiest - all events are generated.

              return true;

        }

        return false;

    }

    public boolean              isFocusable() {

        return true;

    }

    public Image                createImage(ImageProducer producer) { return null; }

    public Image                createImage(int width, int height) { return null; }

    public VolatileImage        createVolatileImage(int width, int height) { return null; }

    public boolean              prepareImage(Image img, int w, int h, ImageObserver o) { return false; }

    public int                  checkImage(Image img, int w, int h, ImageObserver o) { return 0; }

    public GraphicsConfiguration getGraphicsConfiguration() { return null; }

    public boolean     handlesWheelScrolling() { return true; }

    public void createBuffers(int numBuffers, BufferCapabilities caps)

      throws AWTException { }

    public Image getBackBuffer() { return null; }

    public void flip(int x1, int y1, int x2, int y2, BufferCapabilities.FlipContents flipAction) {  }

    public void destroyBuffers() { }

    /**

     * Used by lightweight implementations to tell a ComponentPeer to layout

     * its sub-elements.  For instance, a lightweight Checkbox needs to layout

     * the box, as well as the text label.

     */

    public void        layout() {}

    Window getTopLevel(Component comp) {

        while (comp != null && !(comp instanceof Window)) {

            comp = comp.getParent();

        }

        return (Window)comp;

    }

    void childResized() {

        XToolkit.postEvent(XToolkit.targetToAppContext(proxy), new ComponentEvent(proxy, ComponentEvent.COMPONENT_RESIZED));

        container.childResized(proxy);

//         XToolkit.postEvent(XToolkit.targetToAppContext(proxy), new InvocationEvent(proxy, new Runnable() {

//                 public void run() {

//                     getTopLevel(proxy).invalidate();

//                     getTopLevel(proxy).pack();

//                 }

//             }));

    }

    void handlePropertyNotify(XEvent xev) {

        XPropertyEvent ev = xev.get_xproperty();

        if (ev.get_atom() == XAtom.XA_WM_NORMAL_HINTS) {

            childResized();

        }

    }

    void handleConfigureNotify(XEvent xev) {

        childResized();

    }

    public void dispatchEvent(XEvent xev) {

        int type = xev.get_type();

        switch (type) {

          case XConstants.PropertyNotify:

              handlePropertyNotify(xev);

              break;

          case XConstants.ConfigureNotify:

              handleConfigureNotify(xev);

              break;

        }

    }

    void requestXEmbedFocus() {

        postEvent(new InvocationEvent(proxy, new Runnable() {

                public void run() {

                    proxy.requestFocusInWindow();

                }

            }));

    }

    public void reparent(ContainerPeer newNativeParent) {

    }

    public boolean isReparentSupported() {

        return false;

    }

    public Rectangle getBounds() {

        XWindowAttributes attrs = new XWindowAttributes();

        XToolkit.awtLock();

        try {

            XlibWrapper.XGetWindowAttributes(XToolkit.getDisplay(), handle, attrs.pData);

            return new Rectangle(attrs.get_x(), attrs.get_y(), attrs.get_width(), attrs.get_height());

        } finally {

            XToolkit.awtUnlock();

            attrs.dispose();

        }

    }

    public void setBoundsOperation(int operation) {

    }

    public void applyShape(Region shape) {

    }

    public void setZOrder(ComponentPeer above) {

    }

    public boolean updateGraphicsData(GraphicsConfiguration gc) {

        return false;

    }

}