cn.mapway.ui.server.mvc.ModuleFactoryGenerator Maven / Gradle / Ivy

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package cn.mapway.ui.server.mvc;

import cn.mapway.ui.client.mvc.IModule;
import cn.mapway.ui.client.mvc.ModuleFactory;
import cn.mapway.ui.client.mvc.ModuleInfo;
import cn.mapway.ui.client.mvc.ModuleMarker;
import com.google.gwt.core.ext.Generator;
import com.google.gwt.core.ext.GeneratorContext;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.TypeOracle;
import com.google.gwt.user.rebind.ClassSourceFileComposerFactory;
import com.google.gwt.user.rebind.SourceWriter;
import org.nutz.lang.Files;
import org.nutz.lang.Lang;
import org.nutz.repo.Base64;

import java.io.File;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;


/**
 * 管理系统模块类，自动搜索IModule类,生成一个代理类,使用此代理类实例化模块,模块的生成是单例模式 +.
 *
 * @author zhangjianshe
 */
public class ModuleFactoryGenerator extends Generator {

    private static final String DEFAULT_ICON =
            "data:image/png;base64,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";

    /*
     * 11 (non-Javadoc)
     *
     * @see com.google.gwt.core.ext.Generator#generate(com.google.gwt.core.ext.TreeLogger,
     * com.google.gwt.core.ext.GeneratorContext, java.lang.String)
     */
    @Override
    public String generate(TreeLogger logger, GeneratorContext context, String typeName)
            throws UnableToCompleteException {

        TypeOracle oracle = context.getTypeOracle();

        // 需要查找的管理模块
        JClassType instantiableType = oracle.findType(IModule.class.getName());

        // 需要管理的模块集合
        List clazzes = new ArrayList();


        // 查找所有的类，并统计出需要管理的类
        for (JClassType classType : oracle.getTypes()) {
            if (!classType.equals(instantiableType) && classType.isAssignableTo(instantiableType)) {
                clazzes.add(classType);
            }
        }

        // 生成代理类的package
        final String genPackageName = "cn.mapway.ui.client.mvc";

        // 代理类名称
        final String genClassName = "ModuleFactoryImpl";

        // 代码生成器工厂类
        ClassSourceFileComposerFactory composer =
                new ClassSourceFileComposerFactory(genPackageName, genClassName);

        // 代理类继承需要代理的接口
        composer.addImplementedInterface(ModuleFactory.class.getCanonicalName());
        // 代理类要引用的类包
        composer.addImport("cn.mapway.ui.client.mvc.*");

        // 创建一个源代码生成器对象
        PrintWriter printWriter = context.tryCreate(logger, genPackageName, genClassName);

        if (printWriter != null) {
            // 源代码生成器
            SourceWriter sourceWriter = composer.createSourceWriter(context, printWriter);
            // 生成一个无参数构造函数
            sourceWriter.println("ModuleFactoryImpl() {");
            sourceWriter.println("}");

            sourceWriter.println("\r\n   private static String DEFAULT_ICON=\"" + DEFAULT_ICON + "\";");

            // 输出代码方法
            printFactoryMethod(clazzes, sourceWriter);

            // 写入磁盘
            sourceWriter.commit(logger);
        }

        // 返回生成的代理对象类名称
        return composer.getCreatedClassName();
    }

    /**
     * Prints the factory method.
     *
     * @param clazzes      需要代理的模块集合
     * @param sourceWriter the source writer
     */
    private void printFactoryMethod(List clazzes, SourceWriter sourceWriter) {
        sourceWriter.println();

        StringBuilder sb = new StringBuilder();

        StringBuilder sbModules = new StringBuilder();
        sbModules.append(" private final static ModuleInfo[] gModules={");

        int count = 0;
        for (JClassType classType : clazzes) {
            if (classType.isAbstract()) {
                continue;
            }
            ModuleInfo item = findModuleName(classType);
            if (item == null) {
                continue;
            }
            if (count > 0) {
                sbModules.append(",");
            }

            if (item.icon.equals(DEFAULT_ICON)) {
                sbModules.append("new ModuleInfo(\"" + item.name + "\",\"" + item.code + "\",\""
                        + item.summary + "\"," + (item.isPublic ? "true" : "false") + ",DEFAULT_ICON,\""
                        + item.hash + "\"," + item.isVisible + ",\"" + item.group + "\")\r\n");
            } else {
                sbModules.append("new ModuleInfo(\"" + item.name + "\",\"" + item.code + "\",\""
                        + item.summary + "\"," + (item.isPublic ? "true" : "false") + ",\"" + item.icon
                        + "\",\"" + item.hash + "\"," + item.isVisible + ",\"" + item.group + "\")\r\n");
            }
            sb.append("\r\n\t private static IModule " + item.code + "=null;\r\n");

            count++;

        }
        sbModules.append("};");
        sourceWriter.println(sbModules.toString());

        sourceWriter.println(sb.toString());


        // 输出 接口 getModules();

        sourceWriter.println("public ModuleInfo[] getModules(){");
        sourceWriter.println("return gModules;");
        sourceWriter.println("}");

        // 输出 public boolean isModulePublic(String moduleCode);
        sourceWriter.println("\r\npublic boolean isModulePublic(String moduleCode){");
        sourceWriter.println("\r\n    if(moduleCode==null || moduleCode.length()==0) {return false;}");
        sourceWriter.println("\r\n    for(int i=0;i