104 lines
3.8 KiB
Java
104 lines
3.8 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* $Header:$
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*/
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package org.apache.beehive.netui.tags.javascript;
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import org.apache.beehive.netui.tags.AbstractSimpleTag;
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import org.apache.beehive.netui.tags.rendering.WriteRenderAppender;
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import javax.servlet.jsp.JspException;
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import javax.servlet.jsp.PageContext;
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import java.io.IOException;
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/**
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* This class will output a script block into the generated HTML. The primary reason
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* for this class is to add the ability to add JavaScript either before or after the
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* framework provided JavaScript.
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* @jsptagref.tagdescription <p>Outputs a script block into the generated HTML. The primary reason
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* for this tag is to add JavaScript either before or after the
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* framework provided JavaScript.</p>
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* @netui:tag name="scriptBlock" body-content="scriptless" description="Used to place JavaScript in relationship to the framework genrated JavaScript"
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*/
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public class ScriptBlock extends AbstractSimpleTag
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{
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private ScriptPlacement _placement = ScriptPlacement.PLACE_INLINE;
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/**
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* Return the name of the Tag.
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*/
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public String getTagName()
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{
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return "Content";
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}
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/**
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* Place the JavaScript inside in relationship to the frameword generated JavaScript.
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* @param placement The placement of the JavaScript
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* @jsptagref.attributedescription String value 'after' or 'before'. Places the JavaScript
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* before or after the JavaScript provided by the framework.
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* @jsptagref.databindable false
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* @jsptagref.attributesyntaxvalue <i>string_or_expression_output</i>
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* @netui:attribute rtexprvalue="true"
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* description="The String literal or expression used to output the content."
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*/
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public void setPlacement(String placement)
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{
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if (placement.equals("after"))
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_placement = ScriptPlacement.PLACE_AFTER;
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else if (placement.equals("before"))
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_placement = ScriptPlacement.PLACE_BEFORE;
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else
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_placement = ScriptPlacement.PLACE_INLINE;
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}
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/**
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* Render the content.
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* @throws javax.servlet.jsp.JspException if a JSP exception has occurred
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*/
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public void doTag()
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throws JspException, IOException
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{
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// report any errors...
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if (hasErrors()) {
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reportErrors();
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return;
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}
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PageContext pageContext = getPageContext();
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WriteRenderAppender writer = new WriteRenderAppender(pageContext);
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String script = getBufferBody(false);
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if (script == null)
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return;
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// make sure that the last character is a new line
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if (script.length() > 0 && script.charAt(script.length() -1) != '\n') {
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script = script + "\n";
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}
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IScriptReporter sr = getScriptReporter();
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// if we are writting the javaScript inline then do it....
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if (_placement == ScriptPlacement.PLACE_INLINE || sr == null) {
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ScriptRequestState.writeScriptBlock(pageContext.getRequest(), writer, script);
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return;
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}
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sr.addScriptFunction(_placement, script);
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}
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}
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