/*
 * Copyright (c) 1997, 2006, 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
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package com.sun.java.swing.plaf.windows;

import javax.swing.plaf.basic.*;
import javax.swing.border.*;
import javax.swing.plaf.*;
import javax.swing.*;

import java.awt.*;

import static com.sun.java.swing.plaf.windows.TMSchema.*;
import static com.sun.java.swing.plaf.windows.TMSchema.Part.*;
import static com.sun.java.swing.plaf.windows.XPStyle.Skin;
import sun.awt.AppContext;


Windows button.

Warning:
Serialized objects of this class will not be compatible with
future Swing releases.  The current serialization support is appropriate
for short term storage or RMI between applications running the same
version of Swing.  A future release of Swing will provide support for
long term persistence.
Author:
Jeff Dinkins/**
 * Windows button.
 * <p>
 * <strong>Warning:</strong>
 * Serialized objects of this class will not be compatible with
 * future Swing releases.  The current serialization support is appropriate
 * for short term storage or RMI between applications running the same
 * version of Swing.  A future release of Swing will provide support for
 * long term persistence.
 *
 * @author Jeff Dinkins
 *
 */
public class WindowsButtonUI extends BasicButtonUI
{
    protected int dashedRectGapX;
    protected int dashedRectGapY;
    protected int dashedRectGapWidth;
    protected int dashedRectGapHeight;

    protected Color focusColor;

    private boolean defaults_initialized = false;

    private static final Object WINDOWS_BUTTON_UI_KEY = new Object();

    // ********************************
    //          Create PLAF
    // ********************************
    public static ComponentUI createUI(JComponent c) {
        AppContext appContext = AppContext.getAppContext();
        WindowsButtonUI windowsButtonUI =
                (WindowsButtonUI) appContext.get(WINDOWS_BUTTON_UI_KEY);
        if (windowsButtonUI == null) {
            windowsButtonUI = new WindowsButtonUI();
            appContext.put(WINDOWS_BUTTON_UI_KEY, windowsButtonUI);
        }
        return windowsButtonUI;
    }


    // ********************************
    //            Defaults
    // ********************************
    protected void installDefaults(AbstractButton b) {
        super.installDefaults(b);
        if(!defaults_initialized) {
            String pp = getPropertyPrefix();
            dashedRectGapX = UIManager.getInt(pp + "dashedRectGapX");
            dashedRectGapY = UIManager.getInt(pp + "dashedRectGapY");
            dashedRectGapWidth = UIManager.getInt(pp + "dashedRectGapWidth");
            dashedRectGapHeight = UIManager.getInt(pp + "dashedRectGapHeight");
            focusColor = UIManager.getColor(pp + "focus");
            defaults_initialized = true;
        }

        XPStyle xp = XPStyle.getXP();
        if (xp != null) {
            b.setBorder(xp.getBorder(b, getXPButtonType(b)));
            LookAndFeel.installProperty(b, "rolloverEnabled", Boolean.TRUE);
        }
    }

    protected void uninstallDefaults(AbstractButton b) {
        super.uninstallDefaults(b);
        defaults_initialized = false;
    }

    protected Color getFocusColor() {
        return focusColor;
    }

    // ********************************
    //         Paint Methods
    // ********************************

    
Overridden method to render the text without the mnemonic
/**
     * Overridden method to render the text without the mnemonic
     */
    protected void paintText(Graphics g, AbstractButton b, Rectangle textRect, String text) {
        WindowsGraphicsUtils.paintText(g, b, textRect, text, getTextShiftOffset());
    }

    protected void paintFocus(Graphics g, AbstractButton b, Rectangle viewRect, Rectangle textRect, Rectangle iconRect){

        // focus painted same color as text on Basic??
        int width = b.getWidth();
        int height = b.getHeight();
        g.setColor(getFocusColor());
        BasicGraphicsUtils.drawDashedRect(g, dashedRectGapX, dashedRectGapY,
                                          width - dashedRectGapWidth, height - dashedRectGapHeight);
    }

    protected void paintButtonPressed(Graphics g, AbstractButton b){
        setTextShiftOffset();
    }

    // ********************************
    //          Layout Methods
    // ********************************
    public Dimension getPreferredSize(JComponent c) {
        Dimension d = super.getPreferredSize(c);

        /* Ensure that the width and height of the button is odd,
         * to allow for the focus line if focus is painted
         */
        AbstractButton b = (AbstractButton)c;
        if (d != null && b.isFocusPainted()) {
            if(d.width % 2 == 0) { d.width += 1; }
            if(d.height % 2 == 0) { d.height += 1; }
        }
        return d;
    }


    /* These rectangles/insets are allocated once for all
     * ButtonUI.paint() calls.  Re-using rectangles rather than
     * allocating them in each paint call substantially reduced the time
     * it took paint to run.  Obviously, this method can't be re-entered.
     */
    private Rectangle viewRect = new Rectangle();

    public void paint(Graphics g, JComponent c) {
        if (XPStyle.getXP() != null) {
            WindowsButtonUI.paintXPButtonBackground(g, c);
        }
        super.paint(g, c);
    }

    static Part getXPButtonType(AbstractButton b) {
        if(b instanceof JCheckBox) {
            return Part.BP_CHECKBOX;
        }
        if(b instanceof JRadioButton) {
            return Part.BP_RADIOBUTTON;
        }
        boolean toolbar = (b.getParent() instanceof JToolBar);
        return toolbar ? Part.TP_BUTTON : Part.BP_PUSHBUTTON;
    }

    static State getXPButtonState(AbstractButton b) {
        Part part = getXPButtonType(b);
        ButtonModel model = b.getModel();
        State state = State.NORMAL;
        switch (part) {
        case BP_RADIOBUTTON:
            /* falls through */
        case BP_CHECKBOX:
            if (! model.isEnabled()) {
                state = (model.isSelected()) ? State.CHECKEDDISABLED
                    : State.UNCHECKEDDISABLED;
            } else if (model.isPressed() && model.isArmed()) {
                state = (model.isSelected()) ? State.CHECKEDPRESSED
                    : State.UNCHECKEDPRESSED;
            } else if (model.isRollover()) {
                state = (model.isSelected()) ? State.CHECKEDHOT
                    : State.UNCHECKEDHOT;
            } else {
                state = (model.isSelected()) ? State.CHECKEDNORMAL
                    : State.UNCHECKEDNORMAL;
            }
            break;
        case BP_PUSHBUTTON:
            /* falls through */
        case TP_BUTTON:
            boolean toolbar = (b.getParent() instanceof JToolBar);
            if (toolbar) {
                if (model.isArmed() && model.isPressed()) {
                    state = State.PRESSED;
                } else if (!model.isEnabled()) {
                    state = State.DISABLED;
                } else if (model.isSelected() && model.isRollover()) {
                    state = State.HOTCHECKED;
                } else if (model.isSelected()) {
                    state = State.CHECKED;
                } else if (model.isRollover()) {
                    state = State.HOT;
                } else if (b.hasFocus()) {
                    state = State.HOT;
                }
            } else {
                if ((model.isArmed() && model.isPressed())
                      || model.isSelected()) {
                    state = State.PRESSED;
                } else if (!model.isEnabled()) {
                    state = State.DISABLED;
                } else if (model.isRollover() || model.isPressed()) {
                    state = State.HOT;
                } else if (b instanceof JButton
                           && ((JButton)b).isDefaultButton()) {
                    state = State.DEFAULTED;
                } else if (b.hasFocus()) {
                    state = State.HOT;
                }
            }
            break;
        default :
            state = State.NORMAL;
        }

        return state;
    }

    static void paintXPButtonBackground(Graphics g, JComponent c) {
        AbstractButton b = (AbstractButton)c;

        XPStyle xp = XPStyle.getXP();

        Part part = getXPButtonType(b);

        if (b.isContentAreaFilled() && b.getBorder() != null
                && b.isBorderPainted() && xp != null) {

            Skin skin = xp.getSkin(b, part);

            State state = getXPButtonState(b);
            Dimension d = c.getSize();
            int dx = 0;
            int dy = 0;
            int dw = d.width;
            int dh = d.height;

            Border border = c.getBorder();
            Insets insets;
            if (border != null) {
                // Note: The border may be compound, containing an outer
                // opaque border (supplied by the application), plus an
                // inner transparent margin border. We want to size the
                // background to fill the transparent part, but stay
                // inside the opaque part.
                insets = WindowsButtonUI.getOpaqueInsets(border, c);
            } else {
                insets = c.getInsets();
            }
            if (insets != null) {
                dx += insets.left;
                dy += insets.top;
                dw -= (insets.left + insets.right);
                dh -= (insets.top + insets.bottom);
            }
            skin.paintSkin(g, dx, dy, dw, dh, state);
        }
    }

    
returns - b.getBorderInsets(c) if border is opaque
        - null if border is completely non-opaque
        - somewhere inbetween if border is compound and
             outside border is opaque and inside isn't
/**
     * returns - b.getBorderInsets(c) if border is opaque
     *         - null if border is completely non-opaque
     *         - somewhere inbetween if border is compound and
     *              outside border is opaque and inside isn't
     */
    private static Insets getOpaqueInsets(Border b, Component c) {
        if (b == null) {
            return null;
        }
        if (b.isBorderOpaque()) {
            return b.getBorderInsets(c);
        } else if (b instanceof CompoundBorder) {
            CompoundBorder cb = (CompoundBorder)b;
            Insets iOut = getOpaqueInsets(cb.getOutsideBorder(), c);
            if (iOut != null && iOut.equals(cb.getOutsideBorder().getBorderInsets(c))) {
                // Outside border is opaque, keep looking
                Insets iIn = getOpaqueInsets(cb.getInsideBorder(), c);
                if (iIn == null) {
                    // Inside is non-opaque, use outside insets
                    return iOut;
                } else {
                    // Found non-opaque somewhere in the inside (which is
                    // also compound).
                    return new Insets(iOut.top + iIn.top, iOut.left + iIn.left,
                                      iOut.bottom + iIn.bottom, iOut.right + iIn.right);
                }
            } else {
                // Outside is either all non-opaque or has non-opaque
                // border inside another compound border
                return iOut;
            }
        } else {
            return null;
        }
    }
}