/*
* Copyright 2004 The Apache Software Foundation.
*
* 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.
*
* $Header:$
*/
package org.apache.beehive.netui.databinding.datagrid.runtime.rendering.cell;
import org.apache.beehive.netui.util.internal.InternalStringBuilder;
import java.util.Map;
import java.net.URISyntaxException;
import javax.servlet.jsp.JspContext;
import javax.servlet.http.HttpServletRequest;
import org.apache.beehive.netui.databinding.datagrid.api.exceptions.CellDecoratorException;
import org.apache.beehive.netui.databinding.datagrid.api.sort.SortModel;
import org.apache.beehive.netui.databinding.datagrid.api.sort.SortDirection;
import org.apache.beehive.netui.databinding.datagrid.api.rendering.CellModel;
import org.apache.beehive.netui.databinding.datagrid.api.rendering.DataGridTagModel;
import org.apache.beehive.netui.databinding.datagrid.api.rendering.CellDecorator;
import org.apache.beehive.netui.databinding.datagrid.runtime.model.cell.HeaderCellModel;
import org.apache.beehive.netui.databinding.datagrid.runtime.util.JspUtil;
import org.apache.beehive.netui.tags.rendering.AbstractRenderAppender;
import org.apache.beehive.netui.tags.rendering.StringBuilderRenderAppender;
import org.apache.beehive.netui.tags.rendering.TagRenderingBase;
import org.apache.beehive.netui.tags.rendering.AnchorTag;
import org.apache.beehive.netui.tags.rendering.ImageTag;
import org.apache.beehive.netui.tags.rendering.AbstractHtmlState;
import org.apache.beehive.netui.tags.html.HtmlConstants;
import org.apache.beehive.netui.util.logging.Logger;
import org.apache.beehive.netui.util.Bundle;
/**
*
*/
public final class SortedCellDecorator
extends CellDecorator {
private static final Logger LOGGER = Logger.getInstance(SortedCellDecorator.class);
public SortedCellDecorator(CellDecorator decorator) {
super(decorator);
}
public void decorate(JspContext jspContext, AbstractRenderAppender appender, CellModel cellModel)
throws CellDecoratorException {
assert cellModel instanceof HeaderCellModel;
HeaderCellModel headerCellModel = (HeaderCellModel)cellModel;
assert getNestedDecorator() != null : "SortedCellDecorator did not find a nested decorator and requires one";
getNestedDecorator().decorate(jspContext, appender, cellModel);
if(headerCellModel.isSortable()) {
String sortLink = buildSortLink(jspContext, headerCellModel);
appender.append(" ");
appender.append(sortLink);
}
}
protected String buildSortLink(JspContext jspContext, HeaderCellModel cellModel) {
HttpServletRequest request = JspUtil.getRequest(jspContext);
DataGridTagModel dgm = cellModel.getDataGridTagModel();
assert dgm != null;
SortModel sortModel = dgm.getState().getSortModel();
InternalStringBuilder builder = new InternalStringBuilder();
AbstractRenderAppender appender = new StringBuilderRenderAppender(builder);
TagRenderingBase imageRenderer = TagRenderingBase.Factory.getRendering(TagRenderingBase.IMAGE_TAG, request);
TagRenderingBase anchorRenderer = TagRenderingBase.Factory.getRendering(TagRenderingBase.ANCHOR_TAG, request);
AnchorTag.State aTag = new AnchorTag.State();
ImageTag.State imgTag = new ImageTag.State();
SortDirection sortDirection = sortModel.getSortDirection(cellModel.getSortExpression());
/* build icon for existing sort */
if(sortModel.isSorted(cellModel.getSortExpression()))
imgTag.src = dgm.getResourcePath() + dgm.getSortImagePath(sortDirection);
else
imgTag.src = dgm.getResourcePath() + dgm.getDefaultSortImagePath();
imgTag.registerAttribute(AbstractHtmlState.ATTR_GENERAL, HtmlConstants.BORDER, "false");
Map queryParams = dgm.getUrlBuilder().buildSortQueryParamsMap(cellModel.getSortExpression());
String href = null;
try {
href = JspUtil.createURL(cellModel.getSortHref(),
cellModel.getSortAction(),
null,
cellModel.getScopeId(),
queryParams,
dgm.getJspContext());
}
catch(URISyntaxException use) {
String message = Bundle.getErrorString("Rendering_URLException", new Object[]{cellModel.getSortHref(), cellModel.getSortAction()});
if(LOGGER.isErrorEnabled())
LOGGER.error(message, use);
throw new CellDecoratorException(message, use);
}
aTag.href = href;
anchorRenderer.doStartTag(appender, aTag);
imageRenderer.doStartTag(appender, imgTag);
imageRenderer.doEndTag(appender);
anchorRenderer.doEndTag(appender);
return builder.toString();
}
}