headercell.java

一个比较不错的java分页标签,有源代码,开发者 可以学习学习

/**
 * Licensed under the Artistic License; you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://displaytag.sourceforge.net/license.html
 *
 * THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */
package org.displaytag.model;

import java.util.Comparator;

import org.apache.commons.beanutils.Converter;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.builder.ToStringBuilder;
import org.apache.commons.lang.builder.ToStringStyle;
import org.displaytag.decorator.DisplaytagColumnDecorator;
import org.displaytag.exception.DecoratorException;
import org.displaytag.exception.ObjectLookupException;
import org.displaytag.properties.SortOrderEnum;
import org.displaytag.util.Href;
import org.displaytag.util.HtmlAttributeMap;
import org.displaytag.util.HtmlTagUtil;
import org.displaytag.util.MultipleHtmlAttribute;
import org.displaytag.util.TagConstants;


/**
 * DataObject representing the column header. The header cell contains all the properties common to cells in the same
 * column.
 * @author Fabrizio Giustina
 * @version $Revision: 987 $ ($Author: fgiust $)
 */
public class HeaderCell
{

    /**
     * Map containing the html tag attributes for cells (td).
     */
    private HtmlAttributeMap htmlAttributes;

    /**
     * Map containing the html tag attributes for header cells (td).
     */
    private HtmlAttributeMap headerAttributes;

    /**
     * base href for creating dinamic links.
     */
    private Href href;

    /**
     * param name used in adding a link.
     */
    private String paramName;

    /**
     * property of the object where to get the param value from.
     */
    private String paramProperty;

    /**
     * column title.
     */
    private String title;

    /**
     * is the column sortable?
     */
    private boolean sortable;

    /**
     * Name given to the server when sorting this column
     */
    private String sortName;

    /**
     * ColumnDecorators.
     */
    private DisplaytagColumnDecorator[] columnDecorators;

    /**
     * column number.
     */
    private int columnNumber;

    /**
     * is the column sorted?
     */
    private boolean alreadySorted;

    /**
     * property name to look up in the bean.
     */
    private String beanPropertyName;

    /**
     * show null values?
     */
    private boolean showNulls;

    /**
     * max length of cell content.
     */
    private int maxLength;

    /**
     * max number of words for cell content.
     */
    private int maxWords;

    /**
     * group the column?
     */
    private int group;

    /**
     * Name of the non-decorated property used during sorting.
     */
    private String sortPropertyName;

    /**
     * Should we be attempting to tabulate the totals?
     */
    private boolean totaled;

    /**
     * Defalt sort order for this column.
     */
    private SortOrderEnum defaultSortOrder;

    /**
     * The running total for the column.
     */
    private double total;

    /**
     * Use this comparator for sorting.
     */
    private Comparator comparator;

    /**
     * getter for the grouping index.
     * @return 0 if the column is not grouped or the grouping order
     */
    public int getGroup()
    {
        return this.group;
    }

    /**
     * setter for the grouping index.
     * @param groupingOrder int grouping order (>0)
     */
    public void setGroup(int groupingOrder)
    {
        this.group = groupingOrder;
    }

    /**
     * getter for the max number of characters to display in the column.
     * @return int number of characters to display in the column
     */
    public int getMaxLength()
    {
        return this.maxLength;
    }

    /**
     * setter for the max number of characters to display in the column.
     * @param numOfChars number of characters to display in the column
     */
    public void setMaxLength(int numOfChars)
    {
        this.maxLength = numOfChars;
    }

    /**
     * getter for the max number of words to display in the column.
     * @return int number of words to display in the column
     */
    public int getMaxWords()
    {
        return this.maxWords;
    }

    /**
     * setter for the max number of words to display in the column.
     * @param numOfWords number of words to display in the column
     */
    public void setMaxWords(int numOfWords)
    {
        this.maxWords = numOfWords;
    }

    /**
     * Should null be displayed?
     * @return true null will be displayed in cell content
     */
    public boolean getShowNulls()
    {
        return this.showNulls;
    }

    /**
     * Enable or disable displaying of null values.
     * @param outputNulls boolean true if null should be displayed
     */
    public void setShowNulls(boolean outputNulls)
    {
        this.showNulls = outputNulls;
    }

    /**
     * Getter for the name of the property to look up in the bean.
     * @return String name of the property to look up in the bean
     */
    public String getBeanPropertyName()
    {
        return this.beanPropertyName;
    }

    /**
     * Setter for the name of the property to look up in the bean.
     * @param propertyName - name of the property to look up in the bean
     */
    public void setBeanPropertyName(String propertyName)
    {
        this.beanPropertyName = propertyName;
    }

    /**
     * Is the column already sorted?
     * @return true if the column already sorted
     */
    public boolean isAlreadySorted()
    {
        return this.alreadySorted;
    }

    /**
     * Setter for the sorted property (the column is actually sorted).
     */
    public void setAlreadySorted()
    {
        this.alreadySorted = true;
    }

    /**
     * Getter for the column number.
     * @return int column number
     */
    public int getColumnNumber()
    {
        return this.columnNumber;
    }

    /**
     * Setter for the column number.
     * @param number - int column number
     */
    public void setColumnNumber(int number)
    {
        this.columnNumber = number;
    }

    /**
     * Returns the columnDecorator object for this column.
     * @return DisplaytagColumnDecorator
     */
    public DisplaytagColumnDecorator[] getColumnDecorators()
    {
        return this.columnDecorators != null ? this.columnDecorators : new DisplaytagColumnDecorator[0];
    }

    /**
     * Sets the columnDecorator object for this column.
     * @param decorator - the DisplaytagColumnDecorator
     */
    public void setColumnDecorators(DisplaytagColumnDecorator[] decorator)
    {
        this.columnDecorators = decorator;
    }

    /**
     * Is the column sortable?
     * @return true if the column is sortable
     */
    public boolean getSortable()
    {
        return this.sortable;
    }

    /**
     * is the column sortable?
     * @param isSortable - true if the column can be sorted
     */
    public void setSortable(boolean isSortable)
    {
        this.sortable = isSortable;
    }

    /**
     * Get name given to server for sorting this column
     * @return name given to server for sorting this column
     */
    public String getSortName()
    {
        return sortName;
    }

    /**
     * Set name given to server for sorting this column