/*

 * Copyright 2002-2008 Sun Microsystems, Inc.  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.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package sun.awt.X11;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.Font;

import java.awt.FontMetrics;

import java.awt.Frame;

import java.awt.Graphics;

import java.awt.Insets;

import java.awt.MenuBar;

import java.awt.Rectangle;

import java.awt.peer.FramePeer;

import java.util.logging.Level;

import java.util.logging.Logger;

class XFramePeer extends XDecoratedPeer implements FramePeer {

    private static Logger log = Logger.getLogger("sun.awt.X11.XFramePeer");

    private static Logger stateLog = Logger.getLogger("sun.awt.X11.states");

    private static Logger insLog = Logger.getLogger("sun.awt.X11.insets.XFramePeer");

    XMenuBarPeer menubarPeer;

    MenuBar menubar;

    int state;

    private Boolean undecorated;

    private static final int MENUBAR_HEIGHT_IF_NO_MENUBAR = 0;

    private int lastAppliedMenubarHeight = MENUBAR_HEIGHT_IF_NO_MENUBAR;

    XFramePeer(Frame target) {

        super(target);

    }

    XFramePeer(XCreateWindowParams params) {

        super(params);

    }

    void preInit(XCreateWindowParams params) {

        super.preInit(params);

        Frame target = (Frame)(this.target);

        // set the window attributes for this Frame

        winAttr.initialState = target.getExtendedState();

        state = 0;

        undecorated = Boolean.valueOf(target.isUndecorated());

        winAttr.nativeDecor = !target.isUndecorated();

        if (winAttr.nativeDecor) {

            winAttr.decorations = winAttr.AWT_DECOR_ALL;

        } else {

            winAttr.decorations = winAttr.AWT_DECOR_NONE;

        }

        winAttr.functions = MWMConstants.MWM_FUNC_ALL;

        winAttr.isResizable = true; // target.isResizable();

        winAttr.title = target.getTitle();

        winAttr.initialResizability = target.isResizable();

        if (log.isLoggable(Level.FINE)) {

            log.log(Level.FINE, "Frame''s initial attributes: decor {0}, resizable {1}, undecorated {2}, initial state {3}",

                     new Object[] {Integer.valueOf(winAttr.decorations), Boolean.valueOf(winAttr.initialResizability),

                                   Boolean.valueOf(!winAttr.nativeDecor), Integer.valueOf(winAttr.initialState)});

        }

    }

    void postInit(XCreateWindowParams params) {

        super.postInit(params);

        setupState(true);

    }

    @Override

    boolean isTargetUndecorated() {

        if (undecorated != null) {

            return undecorated.booleanValue();

        } else {

            return ((Frame)target).isUndecorated();

        }

    }

    void setupState(boolean onInit) {

        if (onInit) {

            state = winAttr.initialState;

        }

        if ((state & Frame.ICONIFIED) != 0) {

            setInitialState(XUtilConstants.IconicState);

        } else {

            setInitialState(XUtilConstants.NormalState);

        }

        setExtendedState(state);

    }

    public void setMenuBar(MenuBar mb) {

        // state_lock should always be the second after awt_lock

        XToolkit.awtLock();

        try {

            synchronized(getStateLock()) {

                if (mb == menubar) return;

                if (mb == null) {

                    if (menubar != null) {

                        menubarPeer.xSetVisible(false);

                        menubar = null;

                        menubarPeer.dispose();

                        menubarPeer = null;

                    }

                } else {

                    menubar = mb;

                    menubarPeer = (XMenuBarPeer) mb.getPeer();

                    if (menubarPeer != null) {

                        menubarPeer.init((Frame)target);

                    }

                }

            }

        } finally {

            XToolkit.awtUnlock();

        }

        reshapeMenubarPeer();

    }

    XMenuBarPeer getMenubarPeer() {

        return menubarPeer;

    }

    int getMenuBarHeight() {

        if (menubarPeer != null) {

            return menubarPeer.getDesiredHeight();

        } else {

            return MENUBAR_HEIGHT_IF_NO_MENUBAR;

        }

    }

    void updateChildrenSizes() {

        super.updateChildrenSizes();

        // XWindow.reshape calls XBaseWindow.xSetBounds, which acquires

        // the AWT lock, so we have to acquire the AWT lock here

        // before getStateLock() to avoid a deadlock with the Toolkit thread

        // when this method is called on the EDT.

        XToolkit.awtLock();

        try {

            synchronized(getStateLock()) {

                int width = dimensions.getClientSize().width;

                if (menubarPeer != null) {

                    menubarPeer.reshape(0, 0, width, getMenuBarHeight());

                }

            }

        } finally {

            XToolkit.awtUnlock();

        }

    }

    /**

     * In addition to reshaping menubarPeer (by using 'updateChildrenSizes')

     * this method also performs some frame reaction on this (i.e. layouts

     * other frame children, if required)

     */

    final void reshapeMenubarPeer() {

        XToolkit.executeOnEventHandlerThread(

            target,

            new Runnable() {

                public void run() {

                    updateChildrenSizes();

                    boolean heightChanged = false;

                    int height = getMenuBarHeight();

                        // Neither 'XToolkit.awtLock()' nor 'getStateLock()'

                        // is acquired under this call, and it looks to run

                        // thread-safely. I currently see no reason to move

                        // it under following 'synchronized' clause.

                    synchronized(getStateLock()) {

                        if (height != lastAppliedMenubarHeight) {

                            lastAppliedMenubarHeight = height;

                            heightChanged = true;

                        }

                    }

                    if (heightChanged) {

                        // To make frame contents be re-layout (copied from

                        // 'XDecoratedPeer.revalidate()'). These are not

                        // 'synchronized', because can recursively call client

                        // methods, which are not supposed to be called with locks

                        // acquired.

                        target.invalidate();

                        target.validate();

                    }

                }

            }

        );

    }

    public void setMaximizedBounds(Rectangle b) {

        if (insLog.isLoggable(Level.FINE)) insLog.fine("Setting maximized bounds to " + b);

        if (b == null) return;

        maxBounds = new Rectangle(b);

        XToolkit.awtLock();

        try {

            XSizeHints hints = getHints();

            hints.set_flags(hints.get_flags() | (int)XUtilConstants.PMaxSize);

            if (b.width != Integer.MAX_VALUE) {

                hints.set_max_width(b.width);

            } else {

                hints.set_max_width((int)XlibWrapper.DisplayWidth(XToolkit.getDisplay(), XlibWrapper.DefaultScreen(XToolkit.getDisplay())));

            }

            if (b.height != Integer.MAX_VALUE) {

                hints.set_max_height(b.height);

            } else {

                hints.set_max_height((int)XlibWrapper.DisplayHeight(XToolkit.getDisplay(), XlibWrapper.DefaultScreen(XToolkit.getDisplay())));

            }

            if (insLog.isLoggable(Level.FINER)) insLog.finer("Setting hints, flags " + XlibWrapper.hintsToString(hints.get_flags()));

            XlibWrapper.XSetWMNormalHints(XToolkit.getDisplay(), window, hints.pData);

        } finally {

            XToolkit.awtUnlock();

        }

    }

    public int getState() { return state; }

    public void setState(int newState) {

        if (!isShowing()) {

            stateLog.finer("Frame is not showing");

            state = newState;

            return;

        }

        changeState(newState);

    }

    void changeState(int newState) {

        int changed = state ^ newState;

        int changeIconic = changed & Frame.ICONIFIED;

        boolean iconic = (newState & Frame.ICONIFIED) != 0;

        stateLog.log(Level.FINER, "Changing state, old state {0}, new state {1}(iconic {2})",

                     new Object[] {Integer.valueOf(state), Integer.valueOf(newState), Boolean.valueOf(iconic)});

        if (changeIconic != 0 && iconic) {

            if (stateLog.isLoggable(Level.FINER)) stateLog.finer("Iconifying shell " + getShell() + ", this " + this + ", screen " + getScreenNumber());

            XToolkit.awtLock();

            try {

                int res = XlibWrapper.XIconifyWindow(XToolkit.getDisplay(), getShell(), getScreenNumber());

                if (stateLog.isLoggable(Level.FINER)) stateLog.finer("XIconifyWindow returned " + res);

            }

            finally {

                XToolkit.awtUnlock();

            }

        }

        if ((changed & ~Frame.ICONIFIED) != 0) {

            setExtendedState(newState);

        }

        if (changeIconic != 0 && !iconic) {

            if (stateLog.isLoggable(Level.FINER)) stateLog.finer("DeIconifying " + this);

            xSetVisible(true);

        }

    }

    void setExtendedState(int newState) {

        XWM.getWM().setExtendedState(this, newState);

    }

    public void handlePropertyNotify(XEvent xev) {

        super.handlePropertyNotify(xev);

        XPropertyEvent ev = xev.get_xproperty();

        log.log(Level.FINER, "Property change {0}", new Object[] {ev});

        /*

         * Let's see if this is a window state protocol message, and

         * if it is - decode a new state in terms of java constants.

         */

        if (!XWM.getWM().isStateChange(this, ev)) {

            stateLog.finer("either not a state atom or state has not been changed");

            return;

        }

        final int newState = XWM.getWM().getState(this);

        int changed = state ^ newState;

        if (changed == 0) {

            stateLog.finer("State is the same: " + state);

            return;

        }

        int old_state = state;

        state = newState;

        if ((changed & Frame.ICONIFIED) != 0) {

            if ((state & Frame.ICONIFIED) != 0) {

                stateLog.finer("Iconified");

                handleIconify();

            } else {

                stateLog.finer("DeIconified");

                content.purgeIconifiedExposeEvents();

                handleDeiconify();

            }

        }

        handleStateChange(old_state, state);

    }

    // NOTE: This method may be called by privileged threads.

    //       DO NOT INVOKE CLIENT CODE ON THIS THREAD!

    public void handleStateChange(int oldState, int newState) {

        super.handleStateChange(oldState, newState);

        for (ToplevelStateListener topLevelListenerTmp : toplevelStateListeners) {

            topLevelListenerTmp.stateChangedJava(oldState, newState);

        }

    }

    public void setVisible(boolean vis) {

        if (vis) {

            setupState(false);

        } else {

            if ((state & Frame.MAXIMIZED_BOTH) != 0) {

                XWM.getWM().setExtendedState(this, state & ~Frame.MAXIMIZED_BOTH);

            }

        }

        super.setVisible(vis);

        if (vis && maxBounds != null) {

            setMaximizedBounds(maxBounds);

        }

    }

    void setInitialState(int wm_state) {

        XToolkit.awtLock();

        try {

            XWMHints hints = getWMHints();

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

            hints.set_initial_state(wm_state);

            if (stateLog.isLoggable(Level.FINE)) stateLog.fine("Setting initial WM state on " + this + " to " + wm_state);

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

        }

        finally {

            XToolkit.awtUnlock();

        }

    }

    public void dispose() {

        if (menubarPeer != null) {

            menubarPeer.dispose();

        }

        super.dispose();

    }

    boolean isMaximized() {

        return (state & (Frame.MAXIMIZED_VERT  | Frame.MAXIMIZED_HORIZ)) != 0;

    }

    static final int CROSSHAIR_INSET = 5;

    static final int BUTTON_Y = CROSSHAIR_INSET + 1;

    static final int BUTTON_W = 17;

    static final int BUTTON_H = 17;

    static final int SYS_MENU_X = CROSSHAIR_INSET + 1;

    static final int SYS_MENU_CONTAINED_X = SYS_MENU_X + 5;

    static final int SYS_MENU_CONTAINED_Y = BUTTON_Y + 7;

    static final int SYS_MENU_CONTAINED_W = 8;

    static final int SYS_MENU_CONTAINED_H = 3;

    static final int MAXIMIZE_X_DIFF = CROSSHAIR_INSET + BUTTON_W;

    static final int MAXIMIZE_CONTAINED_X_DIFF = MAXIMIZE_X_DIFF - 5;

    static final int MAXIMIZE_CONTAINED_Y = BUTTON_Y + 5;

    static final int MAXIMIZE_CONTAINED_W = 8;

    static final int MAXIMIZE_CONTAINED_H = 8;

    static final int MINIMIZE_X_DIFF = MAXIMIZE_X_DIFF + BUTTON_W;

    static final int MINIMIZE_CONTAINED_X_DIFF = MINIMIZE_X_DIFF - 7;

    static final int MINIMIZE_CONTAINED_Y = BUTTON_Y + 7;

    static final int MINIMIZE_CONTAINED_W = 3;

    static final int MINIMIZE_CONTAINED_H = 3;

    static final int TITLE_X = SYS_MENU_X + BUTTON_W;

    static final int TITLE_W_DIFF = BUTTON_W * 3 + CROSSHAIR_INSET * 2 - 1;

    static final int TITLE_MID_Y = BUTTON_Y + (BUTTON_H / 2);

    static final int MENUBAR_X = CROSSHAIR_INSET + 1;

    static final int MENUBAR_Y = BUTTON_Y + BUTTON_H;

    static final int HORIZ_RESIZE_INSET = CROSSHAIR_INSET + BUTTON_H;

    static final int VERT_RESIZE_INSET = CROSSHAIR_INSET + BUTTON_W;

    /*

     * Print the native component by rendering the Motif look ourselves.

     * We also explicitly print the MenuBar since a MenuBar isn't a subclass

     * of Component (and thus it has no "print" method which gets called by

     * default).

     */

    public void print(Graphics g) {

        super.print(g);

        Frame f = (Frame)target;

        Insets finsets = f.getInsets();

        Dimension fsize = f.getSize();

        Color bg = f.getBackground();

        Color fg = f.getForeground();

        Color highlight = bg.brighter();

        Color shadow = bg.darker();

        // Well, we could query for the currently running window manager

        // and base the look on that, or we could just always do dtwm.

        // aim, tball, and levenson all agree we'll just do dtwm.

        if (hasDecorations(XWindowAttributesData.AWT_DECOR_BORDER)) {

            // top outer -- because we'll most likely be drawing on white paper,

            // for aesthetic reasons, don't make any part of the outer border

            // pure white

            if (highlight.equals(Color.white)) {

                g.setColor(new Color(230, 230, 230));

            }

            else {

                g.setColor(highlight);

            }

            g.drawLine(0, 0, fsize.width, 0);

            g.drawLine(0, 1, fsize.width - 1, 1);

            // left outer

            // if (highlight.equals(Color.white)) {

            //     g.setColor(new Color(230, 230, 230));

            // }

            // else {

            //     g.setColor(highlight);

            // }

            g.drawLine(0, 0, 0, fsize.height);

            g.drawLine(1, 0, 1, fsize.height - 1);

            // bottom cross-hair

            g.setColor(highlight);

            g.drawLine(CROSSHAIR_INSET + 1, fsize.height - CROSSHAIR_INSET,

                       fsize.width - CROSSHAIR_INSET,

                       fsize.height - CROSSHAIR_INSET);

            // right cross-hair

            // g.setColor(highlight);

            g.drawLine(fsize.width - CROSSHAIR_INSET, CROSSHAIR_INSET + 1,

                       fsize.width - CROSSHAIR_INSET,

                       fsize.height - CROSSHAIR_INSET);

            // bottom outer

            g.setColor(shadow);

            g.drawLine(1, fsize.height, fsize.width, fsize.height);

            g.drawLine(2, fsize.height - 1, fsize.width, fsize.height - 1);

            // right outer

            // g.setColor(shadow);

            g.drawLine(fsize.width, 1, fsize.width, fsize.height);

            g.drawLine(fsize.width - 1, 2, fsize.width - 1, fsize.height);

            // top cross-hair

            // g.setColor(shadow);

            g.drawLine(CROSSHAIR_INSET, CROSSHAIR_INSET,

                       fsize.width - CROSSHAIR_INSET, CROSSHAIR_INSET);

            // left cross-hair

            // g.setColor(shadow);

            g.drawLine(CROSSHAIR_INSET, CROSSHAIR_INSET, CROSSHAIR_INSET,

                       fsize.height - CROSSHAIR_INSET);

        }

        if (hasDecorations(XWindowAttributesData.AWT_DECOR_TITLE)) {

            if (hasDecorations(XWindowAttributesData.AWT_DECOR_MENU)) {

                // system menu

                g.setColor(bg);

                g.fill3DRect(SYS_MENU_X, BUTTON_Y, BUTTON_W, BUTTON_H, true);

                g.fill3DRect(SYS_MENU_CONTAINED_X, SYS_MENU_CONTAINED_Y,

                             SYS_MENU_CONTAINED_W, SYS_MENU_CONTAINED_H, true);

            }

            // title bar

            // g.setColor(bg);

            g.fill3DRect(TITLE_X, BUTTON_Y, fsize.width - TITLE_W_DIFF, BUTTON_H,

                         true);

            if (hasDecorations(XWindowAttributesData.AWT_DECOR_MINIMIZE)) {

                // minimize button

                // g.setColor(bg);

                g.fill3DRect(fsize.width - MINIMIZE_X_DIFF, BUTTON_Y, BUTTON_W,

                             BUTTON_H, true);

                g.fill3DRect(fsize.width - MINIMIZE_CONTAINED_X_DIFF,

                             MINIMIZE_CONTAINED_Y, MINIMIZE_CONTAINED_W,

                             MINIMIZE_CONTAINED_H, true);

            }

            if (hasDecorations(XWindowAttributesData.AWT_DECOR_MAXIMIZE)) {

                // maximize button

                // g.setColor(bg);

                g.fill3DRect(fsize.width - MAXIMIZE_X_DIFF, BUTTON_Y, BUTTON_W,

                             BUTTON_H, true);

                g.fill3DRect(fsize.width - MAXIMIZE_CONTAINED_X_DIFF,

                             MAXIMIZE_CONTAINED_Y, MAXIMIZE_CONTAINED_W,

                             MAXIMIZE_CONTAINED_H, true);

            }

            // title bar text

            g.setColor(fg);

            Font sysfont = new Font(Font.SANS_SERIF, Font.PLAIN, 10);

            g.setFont(sysfont);

            FontMetrics sysfm = g.getFontMetrics();

            String ftitle = f.getTitle();

            g.drawString(ftitle,

                         ((TITLE_X + TITLE_X + fsize.width - TITLE_W_DIFF) / 2) -

                         (sysfm.stringWidth(ftitle) / 2),

                         TITLE_MID_Y + sysfm.getMaxDescent());

        }