/*

 * Copyright (c) 2002-2018, the original author or authors.

 *

 * This software is distributable under the BSD license. See the terms of the

 * BSD license in the documentation provided with this software.

 *

 */

package jdk.internal.org.jline.utils;

/**

 * Text styling.

 *

 * @author <a href="mailto:gnodet@gmail.com">Guillaume Nodet</a>

 */

public class AttributedStyle {

    public static final int BLACK =     0;

    public static final int RED =       1;

    public static final int GREEN =     2;

    public static final int YELLOW =    3;

    public static final int BLUE =      4;

    public static final int MAGENTA =   5;

    public static final int CYAN =      6;

    public static final int WHITE =     7;

    public static final int BRIGHT =    8;

    static final int F_BOLD         = 0x00000001;

    static final int F_FAINT        = 0x00000002;

    static final int F_ITALIC       = 0x00000004;

    static final int F_UNDERLINE    = 0x00000008;

    static final int F_BLINK        = 0x00000010;

    static final int F_INVERSE      = 0x00000020;

    static final int F_CONCEAL      = 0x00000040;

    static final int F_CROSSED_OUT  = 0x00000080;

    static final int F_FOREGROUND   = 0x00000100;

    static final int F_BACKGROUND   = 0x00000200;

    static final int F_HIDDEN       = 0x00000400;

    static final int MASK           = 0x000007FF;

    static final int FG_COLOR_EXP    = 16;

    static final int BG_COLOR_EXP    = 24;

    static final int FG_COLOR        = 0xFF << FG_COLOR_EXP;

    static final int BG_COLOR        = 0xFF << BG_COLOR_EXP;

    public static final AttributedStyle DEFAULT = new AttributedStyle();

    public static final AttributedStyle BOLD = DEFAULT.bold();

    public static final AttributedStyle BOLD_OFF = DEFAULT.boldOff();

    public static final AttributedStyle INVERSE = DEFAULT.inverse();

    public static final AttributedStyle INVERSE_OFF = DEFAULT.inverseOff();

    public static final AttributedStyle HIDDEN = DEFAULT.hidden();

    public static final AttributedStyle HIDDEN_OFF = DEFAULT.hiddenOff();

    final int style;

    final int mask;

    public AttributedStyle() {

        this(0, 0);

    }

    public AttributedStyle(AttributedStyle s) {

        this(s.style, s.mask);

    }

    public AttributedStyle(int style, int mask) {

        this.style = style;

        this.mask = mask & MASK | ((style & F_FOREGROUND) != 0 ? FG_COLOR : 0)

                                | ((style & F_BACKGROUND) != 0 ? BG_COLOR : 0);

    }

    public AttributedStyle bold() {

        return new AttributedStyle(style | F_BOLD, mask | F_BOLD);

    }

    public AttributedStyle boldOff() {

        return new AttributedStyle(style & ~F_BOLD, mask | F_BOLD);

    }

    public AttributedStyle boldDefault() {

        return new AttributedStyle(style & ~F_BOLD, mask & ~F_BOLD);

    }

    public AttributedStyle faint() {

        return new AttributedStyle(style | F_FAINT, mask | F_FAINT);

    }

    public AttributedStyle faintOff() {

        return new AttributedStyle(style & ~F_FAINT, mask | F_FAINT);

    }

    public AttributedStyle faintDefault() {

        return new AttributedStyle(style & ~F_FAINT, mask & ~F_FAINT);

    }

    public AttributedStyle italic() {

        return new AttributedStyle(style | F_ITALIC, mask | F_ITALIC);

    }

    public AttributedStyle italicOff() {

        return new AttributedStyle(style & ~F_ITALIC, mask | F_ITALIC);

    }

    public AttributedStyle italicDefault() {

        return new AttributedStyle(style & ~F_ITALIC, mask & ~F_ITALIC);

    }

    public AttributedStyle underline() {

        return new AttributedStyle(style | F_UNDERLINE, mask | F_UNDERLINE);

    }

    public AttributedStyle underlineOff() {

        return new AttributedStyle(style & ~F_UNDERLINE, mask | F_UNDERLINE);

    }

    public AttributedStyle underlineDefault() {

        return new AttributedStyle(style & ~F_UNDERLINE, mask & ~F_UNDERLINE);

    }

    public AttributedStyle blink() {

        return new AttributedStyle(style | F_BLINK, mask | F_BLINK);

    }

    public AttributedStyle blinkOff() {

        return new AttributedStyle(style & ~F_BLINK, mask | F_BLINK);

    }

    public AttributedStyle blinkDefault() {

        return new AttributedStyle(style & ~F_BLINK, mask & ~F_BLINK);

    }

    public AttributedStyle inverse() {

        return new AttributedStyle(style | F_INVERSE, mask | F_INVERSE);

    }

    public AttributedStyle inverseNeg() {

        int s = (style & F_INVERSE) != 0 ? style & ~F_INVERSE : style | F_INVERSE;

        return new AttributedStyle(s, mask | F_INVERSE);

    }

    public AttributedStyle inverseOff() {

        return new AttributedStyle(style & ~F_INVERSE, mask | F_INVERSE);

    }

    public AttributedStyle inverseDefault() {

        return new AttributedStyle(style & ~F_INVERSE, mask & ~F_INVERSE);

    }

    public AttributedStyle conceal() {

        return new AttributedStyle(style | F_CONCEAL, mask | F_CONCEAL);

    }

    public AttributedStyle concealOff() {

        return new AttributedStyle(style & ~F_CONCEAL, mask | F_CONCEAL);

    }

    public AttributedStyle concealDefault() {

        return new AttributedStyle(style & ~F_CONCEAL, mask & ~F_CONCEAL);

    }

    public AttributedStyle crossedOut() {

        return new AttributedStyle(style | F_CROSSED_OUT, mask | F_CROSSED_OUT);

    }

    public AttributedStyle crossedOutOff() {

        return new AttributedStyle(style & ~F_CROSSED_OUT, mask | F_CROSSED_OUT);

    }

    public AttributedStyle crossedOutDefault() {

        return new AttributedStyle(style & ~F_CROSSED_OUT, mask & ~F_CROSSED_OUT);

    }

    public AttributedStyle foreground(int color) {

        return new AttributedStyle(style & ~FG_COLOR | F_FOREGROUND | ((color << FG_COLOR_EXP) & FG_COLOR), mask | F_FOREGROUND);

    }

    public AttributedStyle foregroundOff() {

        return new AttributedStyle(style & ~FG_COLOR & ~F_FOREGROUND, mask | F_FOREGROUND);

    }

    public AttributedStyle foregroundDefault() {

        return new AttributedStyle(style & ~FG_COLOR & ~F_FOREGROUND, mask & ~(F_FOREGROUND | FG_COLOR));

    }

    public AttributedStyle background(int color) {

        return new AttributedStyle(style & ~BG_COLOR | F_BACKGROUND | ((color << BG_COLOR_EXP) & BG_COLOR), mask | F_BACKGROUND);

    }

    public AttributedStyle backgroundOff() {

        return new AttributedStyle(style & ~BG_COLOR & ~F_BACKGROUND, mask | F_BACKGROUND);

    }

    public AttributedStyle backgroundDefault() {

        return new AttributedStyle(style & ~BG_COLOR & ~F_BACKGROUND, mask & ~(F_BACKGROUND | BG_COLOR));

    }

    /**

     * The hidden flag can be used to embed custom escape sequences.

     * The characters are considered being 0-column long and will be printed as-is.

     * The user is responsible for ensuring that those sequences do not move the cursor.

     *

     * @return the new style

     */

    public AttributedStyle hidden() {

        return new AttributedStyle(style | F_HIDDEN, mask | F_HIDDEN);

    }

    public AttributedStyle hiddenOff() {

        return new AttributedStyle(style & ~F_HIDDEN, mask | F_HIDDEN);

    }

    public AttributedStyle hiddenDefault() {

        return new AttributedStyle(style & ~F_HIDDEN, mask & ~F_HIDDEN);

    }

    public int getStyle() {

        return style;

    }

    public int getMask() {

        return mask;

    }

    @Override

    public boolean equals(Object o) {

        if (this == o) return true;

        if (o == null || getClass() != o.getClass()) return false;

        AttributedStyle that = (AttributedStyle) o;

        if (style != that.style) return false;

        return mask == that.mask;

    }

    @Override

    public int hashCode() {

        int result = style;

        result = 31 * result + mask;

        return result;

    }

}