com.edgenius.wiki.render.macro.TableCellMacro.java Source code

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Here is the source code for com.edgenius.wiki.render.macro.TableCellMacro.java

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/* 
 * =============================================================
 * Copyright (C) 2007-2011 Edgenius (http://www.edgenius.com)
 * =============================================================
 * License Information: http://www.edgenius.com/licensing/edgenius/2.0/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2.0
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * http://www.gnu.org/licenses/gpl.txt
 *  
 * ****************************************************************
 */
package com.edgenius.wiki.render.macro;

import java.util.ListIterator;
import java.util.Map;

import org.apache.commons.lang.StringUtils;

import com.edgenius.core.util.AuditLogger;
import com.edgenius.wiki.gwt.client.html.HTMLNode;
import com.edgenius.wiki.gwt.client.server.utils.BooleanUtil;
import com.edgenius.wiki.render.Macro;
import com.edgenius.wiki.render.MacroParameter;
import com.edgenius.wiki.render.MalformedMacroException;
import com.edgenius.wiki.render.RenderContext;

/**
 * @author Dapeng.Ni
 */
public class TableCellMacro extends BaseMacro {

    static final String NAME = "cell";
    private static final String COL_SPAN = "colspan";
    private static final String ROW_SPAN = "rowspan";

    public void execute(StringBuffer buffer, MacroParameter params) throws MalformedMacroException {
        /*
         * !!! Important
         * This class has an assumption: Table macro must processed before its cells. This is rely on 
         * MacroFilter.getRegions() to return correct sequence region. Then MarkupRenderEngineImpl.processRegions() 
         * process region by this sequence...
         * 
         * If any change impact this process sequence, here has to use ObjectHandler to eliminate sequence dependent. 
         */
        int[] tableInfo = TableGroupProcessor.getTableInfo(params);
        if (tableInfo == null || tableInfo.length != 4) {
            AuditLogger
                    .error("There is no valid Table Group processed for key:" + params.getParam(Macro.GROUP_KEY));
            //Failure tolerance
            buffer.append("<td>").append(params.getContent()).append("</td>");
            return;
        }

        RenderContext context = params.getRenderContext();
        Map<Integer, Map<String, String>> tableParams = (Map<Integer, Map<String, String>>) context
                .getGlobalParam(TableMacro.class.getName());
        String style = null;
        boolean hasTitle = false;
        boolean isLayout = false;
        if (tableParams != null) {
            Map<String, String> tableParam = tableParams.get(tableInfo[0]);
            //this is for non-Grid check 
            if (tableParam != null) {
                hasTitle = BooleanUtil.toBoolean(tableParam.get(TableMacro.FIRST_LINE_AS_TITLE));
                style = tableParam.get(TableMacro.CELL_STYLE);
                isLayout = BooleanUtil.toBoolean(tableParam.get(TableMacro.IS_GRID_LAYOUT));
            }
        }
        String cellWidth = "";
        if (isLayout) {
            int columns = tableInfo[3];
            if (columns > 0) {
                cellWidth = " width='" + 100 / columns + "%' ";
            }
        }
        StringBuffer att = new StringBuffer();
        String colspan = params.getParam(COL_SPAN);
        if (!StringUtils.isBlank(colspan)) {
            att.append("colspan=").append(colspan);
        }
        String rowspan = params.getParam(ROW_SPAN);
        if (!StringUtils.isBlank(rowspan)) {
            if (att.length() > 0)
                att.append(" ");
            att.append("rowspan=").append(rowspan);
        }
        if (att.length() > 0) {
            att.insert(0, " ");
        }

        String start = "<td" + (StringUtils.isBlank(style) ? "" : (" " + style)) + att.toString() + cellWidth + ">";
        String end = "</td>";
        if (tableInfo[1] == 0) {
            //first row

            if (hasTitle) {
                start = "<th" + (StringUtils.isBlank(style) ? "" : (" " + style)) + att.toString() + cellWidth
                        + ">";
                end = "</th>";
            }
        }

        StringBuffer content = new StringBuffer(params.getContent().replaceAll("\\r", ""));
        if (content.length() == 0)
            content.append("&nbsp;");
        buffer.append(start).append(content).append(end);
    }

    public String[] getName() {
        return new String[] { NAME };
    }

    public boolean isPaired() {
        return true;
    }

    protected void replaceHTML(HTMLNode node, ListIterator<HTMLNode> iter, RenderContext context) {
        // Do nothing, work is done in {table} macro
    }

}