| /* |
| * Copyright 1999,2004 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. |
| */ |
| |
| package org.apache.jasper.tagplugins.jstl; |
| |
| import org.apache.jasper.compiler.tagplugin.*; |
| |
| public final class If implements TagPlugin { |
| |
| public void doTag(TagPluginContext ctxt) { |
| String condV = ctxt.getTemporaryVariableName(); |
| ctxt.generateJavaSource("boolean " + condV + "="); |
| ctxt.generateAttribute("test"); |
| ctxt.generateJavaSource(";"); |
| if (ctxt.isAttributeSpecified("var")) { |
| String scope = "PageContext.PAGE_SCOPE"; |
| if (ctxt.isAttributeSpecified("scope")) { |
| String scopeStr = ctxt.getConstantAttribute("scope"); |
| if ("request".equals(scopeStr)) { |
| scope = "PageContext.REQUEST_SCOPE"; |
| } else if ("session".equals(scopeStr)) { |
| scope = "PageContext.SESSION_SCOPE"; |
| } else if ("application".equals(scopeStr)) { |
| scope = "PageContext.APPLICATION_SCOPE"; |
| } |
| } |
| ctxt.generateJavaSource("_jspx_page_context.setAttribute("); |
| ctxt.generateAttribute("var"); |
| ctxt.generateJavaSource(", new Boolean(" + condV + ")," + scope + ");"); |
| } |
| ctxt.generateJavaSource("if (" + condV + "){"); |
| ctxt.generateBody(); |
| ctxt.generateJavaSource("}"); |
| } |
| } |