basecell.java

分页查询控件 分页查询控件

/*
 * Copyright original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.extremecomponents.table.cell;

import org.apache.commons.lang.StringUtils;
import org.extremecomponents.base.BaseModel;
import org.extremecomponents.table.bean.Column;
import org.extremecomponents.util.HtmlBuilder;

/**
 * Some of the common things that a cell needs to do. Most of the time this
 * class should be extended for convenience
 * 
 * @author Jeff Johnston
 */
public abstract class BaseCell implements Cell {

    /**
     * An even row in the table.
     */
    public final static String EVEN = "even";

    /**
     * An odd row in the table.
     */
    public final static String ODD = "odd";
    
    protected BaseModel model;
    protected Column column;
    protected Integer rowcount;

    public BaseCell() {
    }

    /**
     * Set the Model, Column and current rowcount.
     */
    public void init(BaseModel model, Column column, Integer rowcount) {
        this.model = model;
        this.column = column;
        this.rowcount = rowcount;
    }

    /**
     * Destroy the objects set up in the init() method.
     */
    public void destroy() {
        this.model = null;
        this.column = null;
        this.rowcount = null;
    }

    /**
     * Find out if the column is sitting on an even row.
     */
    public boolean isRowEven() {
        if (rowcount != null && (rowcount.intValue() % 2) == 0) {
            return true;
        }

        return false;
    }

    /**
     * Find out if the column is sitting on an odd row.
     */
    public boolean isRowOdd() {
        if (rowcount != null && (rowcount.intValue() % 2) == 0) {
            return false;
        }

        return true;
    }

    /**
     * Get the HTML for the td
     * <td>tag. If the style is defined then it will try to use that first. If
     * no style is defined then will use the alternating even and odd styles.
     */
    public String startTD() {
        HtmlBuilder html = new HtmlBuilder();

        html.td(2);

        if (StringUtils.isNotEmpty(column.getStyleClass())) {
            html.styleClass(column.getStyleClass());
        } else if (isRowEven()) {
            html.styleClass(EVEN);
        } else if (isRowOdd()) {
            html.styleClass(ODD);
        }

        if (StringUtils.isNotEmpty(column.getWidth())) {
            html.width(column.getWidth());
        }

        if (StringUtils.isNotEmpty(column.getStyle())) {
            html.style(column.getStyle());
        }

        html.close();

        return html.toString();
    }

    /**
     * Get the HTML for the end td</td>
     * tag.
     */
    public String endTD() {
        return new HtmlBuilder().tdEnd().toString();
    }

    /**
     * Get the cell specific HTML
     */
    public abstract String html();
}