htmlcompactweekview.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.swing.SwingWeekView;

public class HTMLCompactWeekView extends AbstractHTMLView {
    public final static int ROWS = 6; //without the header row
    public final static int COLUMNS = 7;
    /** shared calendar instance. Only used for temporary stored values. */
    HTMLSmallDaySlot[] slots = {};
    String[] slotNames = {}; 
    private ArrayList rows = new ArrayList();
    private boolean[] excluded = new boolean[COLUMNS];
    
    void calcMinMaxDates(Date date) {
        Calendar calendar = createCalendar();
        calendar.setTime(date);
        calendar.set(Calendar.MINUTE,0);
        calendar.set(Calendar.HOUR_OF_DAY,0);
        calendar.set(Calendar.SECOND,0);
        calendar.set(Calendar.MILLISECOND,0);
        calendar.set(Calendar.DAY_OF_WEEK, calendar.getFirstDayOfWeek());
        startDate = null;
        endDate = null;
        for (int i=0;i<COLUMNS;i++) {
            if ( this.startDate == null ) {
               this.startDate = calendar.getTime();
            }
            calendar.add(Calendar.DATE,1);
            this.endDate = calendar.getTime();
        }
    }

    public void setSlots( String[] slotNames ) {
        this.slotNames = slotNames;
    }
    
    public Collection getBlocks() {
        ArrayList list = new ArrayList();
        for (int i=0;i<slots.length;i++) {
            list.addAll(slots[i]);
        }
        return Collections.unmodifiableCollection( list );
    }
    
    /** must be called after the slots are filled*/
    private boolean isExcluded( int column) {
        return excluded[ column ];
    }
    
    public void rebuild() {
        String[] headerNames = new String[COLUMNS];
        blockCalendar.setTime(getStartDate());
        for (int i=0;i<COLUMNS;i++) {
            int index = weekdayMapper.indexForDay( blockCalendar.get ( Calendar.DAY_OF_WEEK ) );
            headerNames[index] = SwingWeekView.formatDayOfWeekDateMonth
                (blockCalendar.getTime()
                 ,locale
                 ,timeZone
                 );
             blockCalendar.add(Calendar.DATE, 1);
             int weekday = weekdayMapper.dayForIndex( i );
             if ( excludeDays.contains(new Integer( weekday )) ) { 
                 excluded[i] = true;
             } else {
                 excluded[i] = false;
             }
        }
        rows.clear();
        for ( int i=0; i<slotNames.length; i++ ) {
            addRow();
        }
        // calculate the blocks
        Iterator it= builders.iterator();
        while (it.hasNext()) {
           Builder b= (Builder)it.next();
           b.prepareBuild(getStartDate(),getEndDate());
        }
        
        // build Blocks
        it= builders.iterator();
        while (it.hasNext()) {
           Builder b= (Builder)it.next();
           if (b.isEnabled()) { b.build(this); }
        }

        Calendar calendar = createCalendar(); 
        calendar.setTime(startDate);
        calendar.set( Calendar.DAY_OF_WEEK, calendar.getFirstDayOfWeek());

        // resource header

        // add headers
        StringBuffer result = new StringBuffer();
        result.append("<table class=\"month_table\">\n");
        result.append("<tr>\n");
        result.append("<td class=\"empty_header\" width=\"14%\">");
        result.append("</td>");
        
        for (int i=0;i<COLUMNS;i++) {
            if (isExcluded(i)) {
                continue;
            }
            result.append("<td class=\"month_header\" width=\"14%\">");
            result.append("<nobr>");
            result.append(headerNames[i]);
            result.append("</nobr>");
            result.append("</td>");
        }
        result.append("\n</tr>");
        
        int rowsize = rows.size();
    
        slots = new HTMLSmallDaySlot[rowsize * COLUMNS];
        for (int row=0;row<rowsize;row++) {
            result.append("<tr>\n");
            result.append("<td class=\"month_cell\" valign=\"top\" height=\"40\">\n");
            if ( slotNames.length > row ) {
                result.append( slotNames[ row ] );
            }
            result.append("</td>\n");
            for (int column=0;column < COLUMNS; column++) {
                List blocks = (List) rows.get( row );
                int fieldNumber = row * COLUMNS + column;
                slots[fieldNumber] = createField( blocks, column );
                if ( !isExcluded( column ) ) {
                    result.append("<td class=\"month_cell\" valign=\"top\" height=\"40\">\n");
                    slots[fieldNumber].paint( result );
                    result.append("</td>\n");
                }
            }
            result.append("</tr>\n");
        }
        result.append("</table>");
        m_html = result.toString();
    }

    private HTMLSmallDaySlot createField(List blocks, int column)  {
        HTMLSmallDaySlot c = new HTMLSmallDaySlot("");
        if ( blocks != null) {
            Iterator it = blocks.iterator();
            while (it.hasNext()){
                HTMLBlock block = (HTMLBlock)it.next();
                blockCalendar.setTime(block.getStart());
                int day = blockCalendar.get(Calendar.DAY_OF_WEEK);
                if ( weekdayMapper.indexForDay(day) == column ) {
                    c.putBlock( block );
                }
            }
        }
        c.sort();
        return c;
    };

    
    public void addBlock(Block block, int slot) {
        checkBlock( block );
        while ( rows.size() <= slot ) {
            addRow();
        }
        ArrayList blocks = (ArrayList) rows.get( slot );
        blocks.add( block );
        
        blockCalendar.setTime(block.getStart());
        int weekday = blockCalendar.get(Calendar.DAY_OF_WEEK);
        excluded[weekdayMapper.indexForDay( weekday )] = false;
    }

    private void addRow() {
        rows.add( rows.size(), new ArrayList());
    }
    
}