abstracthtmlview.java

Rapla是一个灵活的多用户资源管理系统。它提供的一些功能有：日历GUI

/*--------------------------------------------------------------------------*
 | Copyright (C) 2006  Christopher Kohlhaas                                 |
 |                                                                          |
 | This program is free software; you can redistribute it and/or modify     |
 | it under the terms of the GNU General Public License as published by the |
 | Free Software Foundation. A copy of the license has been included with   |
 | these distribution in the COPYING file, if not go to www.fsf.org         |
 |                                                                          |
 | As a special exception, you are granted the permissions to link this     |
 | program with every library, which license fulfills the Open Source       |
 | Definition as published by the Open Source Initiative (OSI).             |
 *--------------------------------------------------------------------------*/

package org.rapla.components.calendarview.html;

import java.util.*;

import org.rapla.components.calendarview.Block;
import org.rapla.components.calendarview.Builder;
import org.rapla.components.calendarview.CalendarView;
import org.rapla.components.calendarview.WeekdayMapper;
import org.rapla.components.calendarview.BlockComparator;

public abstract class AbstractHTMLView implements CalendarView {
    public static String COLOR_NO_RESOURCE = "#BBEEBB";
    protected Collection builders = new ArrayList();
    /** shared calendar instance. Only used for temporary stored values. */
    Calendar blockCalendar;
    WeekdayMapper weekdayMapper;
    Date startDate;
    Date endDate;
    String m_html;
    protected Collection excludeDays = Collections.EMPTY_SET;

    Locale locale;
    TimeZone timeZone;
    Builder builder;

    public void setTimeZone(TimeZone timeZone) {
        this.timeZone = timeZone;
        if ( locale !=  null) {
            blockCalendar = createCalendar();
        }
    }

    public void setLocale(Locale locale) {
        this.locale = locale;
        if ( timeZone !=  null) {
            blockCalendar = createCalendar(); 
        }
        weekdayMapper = new WeekdayMapper( locale );
    }
    
    public TimeZone getTimeZone() {
        return timeZone;
    }
    
    public void addBuilder(Builder b) {
        builders.add(b);
    }

    public void removeBuilder(Builder b) {
        builders.remove(b);
    }

    public void rebuild(Builder builder) {
        try {
            addBuilder( builder);
            rebuild();
        } finally {
            removeBuilder( builder );
        }
    }
        
    public void setToDate(Date weekDate) {
        calcMinMaxDates( weekDate );
    }

    public void setExcludeDays(Collection excludeDays) {
        this.excludeDays = excludeDays;
        if (startDate != null)
            calcMinMaxDates( startDate );
    }

    abstract public Collection getBlocks();
    abstract void calcMinMaxDates( Date date );

    Calendar createCalendar() {
        return Calendar.getInstance(getTimeZone(),locale);
    }

    void checkBlock( Block bl ) {
        if ( !bl.getStart().before(this.endDate)) {
            throw new IllegalStateException("Start-date " +bl.getStart() + " must be before calendar end at " +this.endDate);
        }
    }
    public Date getStartDate() {
        return startDate;
    }

    public Date getEndDate() {
        return endDate;
    }

    public String getHtml() {
        return m_html;    
    }
    
    
    protected class HTMLSmallDaySlot extends ArrayList {
        private static final long serialVersionUID = 1L;

        private String date;
        public HTMLSmallDaySlot(String date) {
            super(2);
            this.date = date;
        }
        public void putBlock(Block block) {
            add( block );
        }
        public void sort() {
            Collections.sort( this, BlockComparator.COMPARATOR);
        }
        
        public void paint(StringBuffer out) {
            out.append("<div valign=\"top\" align=\"right\">");
            out.append( date );
            out.append("</div>\n");
            for ( int i=0;i<size();i++) {
                Block block = (Block) get(i);
                out.append("<div valign=\"top\" class=\"month_block\"");
                if ( block instanceof HTMLBlock ) {
                    out.append(" style=\"background-color:" + ((HTMLBlock)block).getBackgroundColor() + ";\"");
                }
                out.append(">");
                out.append(block.toString());
                out.append("</div>\n");
            }
        }
    }



        
}