com.bstek.dorado.view.config.attachment.AttachedJavaScriptResourceManager.java Source code

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Here is the source code for com.bstek.dorado.view.config.attachment.AttachedJavaScriptResourceManager.java

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/*
 * This file is part of Dorado 7.x (http://dorado7.bsdn.org).
 * 
 * Copyright (c) 2002-2012 BSTEK Corp. All rights reserved.
 * 
 * This file is dual-licensed under the AGPLv3 (http://www.gnu.org/licenses/agpl-3.0.html) 
 * and BSDN commercial (http://www.bsdn.org/licenses) licenses.
 * 
 * If you are unsure which license is appropriate for your use, please contact the sales department
 * at http://www.bstek.com/contact.
 */

package com.bstek.dorado.view.config.attachment;

import java.io.Writer;
import java.util.Map;

import org.apache.commons.jexl2.JexlContext;
import org.apache.commons.lang.StringUtils;

import com.bstek.dorado.core.el.Expression;
import com.bstek.dorado.core.io.Resource;
import com.bstek.dorado.data.type.DataType;
import com.bstek.dorado.view.View;
import com.bstek.dorado.view.manager.ViewConfig;
import com.bstek.dorado.view.output.JsonBuilder;
import com.bstek.dorado.view.output.OutputContext;

/**
 * @author Benny Bao (mailto:benny.bao@bstek.com)
 * @since 2012-5-29
 */
public class AttachedJavaScriptResourceManager extends AttachedResourceManager {
    private JavaScriptParser javaScriptParser;
    private boolean asControllerInDefault = true;

    public JavaScriptParser getJavaScriptParser() {
        return javaScriptParser;
    }

    public void setJavaScriptParser(JavaScriptParser javaScriptParser) {
        this.javaScriptParser = javaScriptParser;
    }

    public boolean isAsControllerInDefault() {
        return asControllerInDefault;
    }

    public void setAsControllerInDefault(boolean asControllerInDefault) {
        this.asControllerInDefault = asControllerInDefault;
    }

    @Override
    protected Object parseContent(Resource resource) throws Exception {
        JavaScriptContent javaScriptContent = javaScriptParser.parse(resource, getCharset(), asControllerInDefault);
        Expression expression = getExpressionHandler().compile((String) javaScriptContent.getContent());
        if (expression != null) {
            javaScriptContent.setContent(expression);
        }
        return javaScriptContent;
    }

    @Override
    public void outputContent(OutputContext context, Object content) throws Exception {
        Map<String, Object> arguments = null;
        View view = context.getCurrentView();
        if (view != null) {
            ViewConfig viewConfig = view.getViewConfig();
            arguments = viewConfig.getArguments();
        }

        JexlContext jexlContext = getExpressionHandler().getJexlContext();
        final String ARGUMENT = "argument";
        Object originArgumentsVar = jexlContext.get(ARGUMENT);
        jexlContext.set(ARGUMENT, arguments);
        try {
            JavaScriptContent javaScriptContent = (JavaScriptContent) content;
            if (javaScriptContent.getIsController()) {
                Writer writer = context.getWriter();
                JsonBuilder jsonBuilder = context.getJsonBuilder();
                writer.append("\n\n(function(view){\n");

                super.outputContent(context, javaScriptContent.getContent());

                if (javaScriptContent.getFunctionInfos() != null) {
                    writer.append("\ndorado.widget.Controller.registerFunctions(view,");
                    jsonBuilder.array();
                    for (FunctionInfo functionInfo : javaScriptContent.getFunctionInfos()) {
                        jsonBuilder.object();
                        jsonBuilder.key("name").value(functionInfo.getFunctionName());

                        jsonBuilder.key("func").beginValue();
                        writer.append(functionInfo.getFunctionName());
                        jsonBuilder.endValue();

                        if (functionInfo.getShouldRegisterToGlobal()) {
                            jsonBuilder.key("global").value(true);
                        }
                        if (functionInfo.getShouldRegisterToView()) {
                            jsonBuilder.key("view").value(true);
                        }

                        BindingInfo bindingInfo = functionInfo.getBindingInfo();
                        if (bindingInfo != null) {
                            jsonBuilder.key("bindingInfos").array();
                            for (String expression : bindingInfo.getExpressions()) {
                                if (expression.charAt(0) == '@') {
                                    registerIncludeDataType(context, expression);
                                }
                                jsonBuilder.value(expression);
                            }
                            jsonBuilder.endArray();
                        }
                        jsonBuilder.endObject();
                    }
                    jsonBuilder.endArray();
                    writer.append(");\n");
                }
                writer.append("})(view);\n");
            } else {
                super.outputContent(context, javaScriptContent.getContent());
            }
        } finally {
            jexlContext.set(ARGUMENT, originArgumentsVar);
        }
    }

    protected void registerIncludeDataType(OutputContext context, String expression) throws Exception {
        String dataTypeName = StringUtils.substringBetween(expression, "@", ".");
        if (StringUtils.isEmpty(dataTypeName)) {
            return;
        }

        ViewConfig viewConfig = context.getCurrentView().getViewConfig();
        if (viewConfig == null) {
            return;
        }

        DataType dataType = viewConfig.getDataType(dataTypeName);
        if (dataType != null) {
            context.markIncludeDataType(dataType);
        }
    }
}