parsedsynthstyle.java

Mobile 应用程序使用 Java Micro Edition (Java ME) 平台

/*
 * @(#)ParsedSynthStyle.java	1.7 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package javax.swing.plaf.synth;

import java.awt.Graphics;
import java.util.LinkedList;

import sun.swing.plaf.synth.DefaultSynthStyle;

/**
 * ParsedSynthStyle are the SynthStyle's that SynthParser creates.
 *
 * @version 1.7, 11/17/05
 * @author Scott Violet
 */
class ParsedSynthStyle extends DefaultSynthStyle {
    private static SynthPainter DELEGATING_PAINTER_INSTANCE = new
                        DelegatingPainter();
    private PainterInfo[] _painters;

    private static PainterInfo[] mergePainterInfo(PainterInfo[] old,
                                                  PainterInfo[] newPI) {
        if (old == null) {
            return newPI;
        }
        if (newPI == null) {
            return old;
        }
        int oldLength = old.length;
        int newLength = newPI.length;
        int dups = 0;
        PainterInfo[] merged = new PainterInfo[oldLength + newLength];
        System.arraycopy(old, 0, merged, 0, oldLength);
        for (int newCounter = 0; newCounter < newLength; newCounter++) {
            boolean found = false;
            for (int oldCounter = 0; oldCounter < oldLength - dups;
                     oldCounter++) {
                if (newPI[newCounter].equalsPainter(old[oldCounter])) {
                    merged[oldCounter] = newPI[newCounter];
                    dups++;
                    found = true;
                    break;
                }
            }
            if (!found) {
                merged[oldLength + newCounter - dups] = newPI[newCounter];
            }
        }
        if (dups > 0) {
            PainterInfo[] tmp = merged;
            merged = new PainterInfo[merged.length - dups];
            System.arraycopy(tmp, 0, merged, 0, merged.length);
        }
        return merged;
    }


    public ParsedSynthStyle() {
    }

    public ParsedSynthStyle(DefaultSynthStyle style) {
        super(style);
        if (style instanceof ParsedSynthStyle) {
            ParsedSynthStyle pStyle = (ParsedSynthStyle)style;

            if (pStyle._painters != null) {
                _painters = pStyle._painters;
            }
        }
    }

    public SynthPainter getPainter(SynthContext ss) {
        return DELEGATING_PAINTER_INSTANCE;
    }

    public void setPainters(PainterInfo[] info) {
        _painters = info;
    }

    public DefaultSynthStyle addTo(DefaultSynthStyle style) {
        if (!(style instanceof ParsedSynthStyle)) {
            style = new ParsedSynthStyle(style);
        }
        ParsedSynthStyle pStyle = (ParsedSynthStyle)super.addTo(style);
        pStyle._painters = mergePainterInfo(pStyle._painters, _painters);
        return pStyle;
    }    

    private SynthPainter getBestPainter(SynthContext context, String method,
                                        int direction) {
        // Check the state info first
        StateInfo info = (StateInfo)getStateInfo(context.getComponentState());
        SynthPainter painter;
        if (info != null) {
            if ((painter = getBestPainter(info.getPainters(), method,
                                          direction)) != null) {
                return painter;
            }
        }
        if ((painter = getBestPainter(_painters, method, direction)) != null) {
            return painter;
        }
        return SynthPainter.NULL_PAINTER;
    }

    private SynthPainter getBestPainter(PainterInfo[] info, String method,
                                        int direction) {
        if (info != null) {
            // Painter specified with no method
            SynthPainter nullPainter = null;
            // Painter specified for this method
            SynthPainter methodPainter = null;

            for (int counter = info.length - 1; counter >= 0; counter--) {
                PainterInfo pi = info[counter];

                if (pi.getMethod() == method) {
                    if (pi.getDirection() == direction) {
                        return pi.getPainter();
                    }
                    else if (methodPainter == null &&pi.getDirection() == -1) {
                        methodPainter = pi.getPainter();
                    }
                }
                else if (nullPainter == null && pi.getMethod() == null) {
                    nullPainter = pi.getPainter();
                }
            }
            if (methodPainter != null) {
                return methodPainter;
            }
            return nullPainter;
        }
        return null;
    }

    public String toString() {
        StringBuffer text = new StringBuffer(super.toString());
        if (_painters != null) {
            text.append(",painters=[");
            for (int i = 0; i < +_painters.length; i++) {
                text.append(_painters[i].toString());
            }
            text.append("]");
        }
        return text.toString();
    }


    static class StateInfo extends DefaultSynthStyle.StateInfo {
        private PainterInfo[] _painterInfo;

        public StateInfo() {
        }

        public StateInfo(DefaultSynthStyle.StateInfo info) {
            super(info);
            if (info instanceof StateInfo) {
                _painterInfo = ((StateInfo)info)._painterInfo;
            }
        }

        public void setPainters(PainterInfo[] painterInfo) {
            _painterInfo = painterInfo;
        }

        public PainterInfo[] getPainters() {
            return _painterInfo;
        }

        public Object clone() {
            return new StateInfo(this);
        }

        public DefaultSynthStyle.StateInfo addTo(
                           DefaultSynthStyle.StateInfo info) {
            if (!(info instanceof StateInfo)) {
                info = new StateInfo(info);
            }
            else {
                info = super.addTo(info);
                StateInfo si = (StateInfo)info;
                si._painterInfo = mergePainterInfo(si._painterInfo,
                                                   _painterInfo);
            }
            return info;
        }

        public String toString() {
            StringBuffer text = new StringBuffer(super.toString());
            text.append(",painters=[");
            if (_painterInfo != null) {
                for (int i = 0; i < +_painterInfo.length; i++) {
                    text.append("    ").append(_painterInfo[i].toString());
                }
            }
            text.append("]");
            return text.toString();
        }
    }


    static class PainterInfo {
        private String _method;
        private SynthPainter _painter;
        private int _direction;

        PainterInfo(String method, SynthPainter painter, int direction) {
            if (method != null) {
                _method = method.intern();
            }
            _painter = painter;
            _direction = direction;
        }

        void addPainter(SynthPainter painter) {
            if (!(_painter instanceof AggregatePainter)) {
                _painter = new AggregatePainter(_painter);
            }

            ((AggregatePainter) _painter).addPainter(painter);
        }

        String getMethod() {
            return _method;
        }

        SynthPainter getPainter() {
            return _painter;
        }

        int getDirection() {
            return _direction;
        }

        boolean equalsPainter(PainterInfo info) {
            return (_method == info._method && _direction == info._direction);
        }

        public String toString() {
            return "PainterInfo {method=" + _method + ",direction=" +
                _direction + ",painter=" + _painter +"}";
        }
    }

    private static class AggregatePainter extends SynthPainter {
        private java.util.List<SynthPainter> painters;

        AggregatePainter(SynthPainter painter) {
            painters = new LinkedList<SynthPainter>();
            painters.add(painter);
        }

        void addPainter(SynthPainter painter) {
            if (painter != null) {
                painters.add(painter);
            }
        }

        public void paintArrowButtonBackground(SynthContext context, Graphics g,
                                               int x, int y, int w, int h) {
            for (SynthPainter painter: painters) {
                painter.paintArrowButtonBackground(context, g, x, y, w, h);
            }
        }

        public void paintArrowButtonBorder(SynthContext context, Graphics g,
                                           int x, int y, int w, int h) {
            for (SynthPainter painter: painters) {
                painter.paintArrowButtonBorder(context, g, x, y, w, h);
            }
        }

        public void paintArrowButtonForeground(SynthContext context, Graphics g,
                                               int x, int y, int w, int h,
                                               int direction) {
            for (SynthPainter painter: painters) {
                painter.paintArrowButtonForeground(context, g,
                                                   x, y, w, h, direction);
            }
        }

        public void paintButtonBackground(SynthContext context, Graphics g,
                                          int x, int y, int w, int h) {
            for (SynthPainter painter: painters) {
                painter.paintButtonBackground(context, g, x, y, w, h);
            }
        }

        public void paintButtonBorder(SynthContext context, Graphics g,
                                      int x, int y, int w, int h) {
            for (SynthPainter painter: painters) {
                painter.paintButtonBorder(context, g, x, y, w, h);
            }
        }

        public void paintCheckBoxMenuItemBackground(SynthContext context,
                                                    Graphics g, int x, int y,
                                                    int w, int h) {
            for (SynthPainter painter: painters) {
                painter.paintCheckBoxMenuItemBackground(context, g, x, y, w, h);
            }
        }