com.google.javascript.jscomp.debugger.gwt.DebuggerGwtMain.java Source code

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Here is the source code for com.google.javascript.jscomp.debugger.gwt.DebuggerGwtMain.java

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/*
 * Copyright 2015 The Closure Compiler Authors.
 *
 * 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 com.google.javascript.jscomp.debugger.gwt;

import com.google.common.base.Joiner;
import com.google.common.collect.Iterables;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.KeyUpEvent;
import com.google.gwt.event.dom.client.KeyUpHandler;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.user.client.ui.CellPanel;
import com.google.gwt.user.client.ui.CheckBox;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.TextArea;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.javascript.jscomp.Compiler;
import com.google.javascript.jscomp.CompilerOptions;
import com.google.javascript.jscomp.JSError;
import com.google.javascript.jscomp.Result;
import com.google.javascript.jscomp.SourceFile;
import com.google.javascript.jscomp.debugger.common.CompilationParam;
import java.util.Arrays;
import java.util.List;

/**
 * A GWT-based version of the Closure Compiler debugger
 *
 * @author moz@google.com (Michael Zhou)
 * @author blickly@google.com (Ben Lickly)
 */
public class DebuggerGwtMain implements EntryPoint {
    final CompilerOptions options = new CompilerOptions();
    final TextArea externs = new TextArea();
    final TextArea input0 = new TextArea();
    final VerticalPanel rightPane = new VerticalPanel();

    private void doCompile() {
        SourceFile externFile = SourceFile.fromCode("externs", externs.getValue());
        SourceFile srcFile = SourceFile.fromCode("input0", input0.getValue());
        Compiler compiler = new Compiler();
        try {
            Result result = compiler.compile(externFile, srcFile, options);
            updateUi(compiler, result);
        } catch (Exception e) {
            updateUiException(e);
        }
    }

    private void updateUi(Compiler compiler, Result result) {
        rightPane.clear();
        rightPane.add(new HTML("<h4>Output</h4>"));
        String outputCode = compiler.toSource();
        rightPane.add(new Label(outputCode));
        rightPane.add(new HTML("<h4>Warnings</h4>"));
        List<JSError> errors = Arrays.asList(result.errors);
        List<JSError> warnings = Arrays.asList(result.warnings);
        rightPane.add(new Label(Joiner.on("\n\n").join(Iterables.concat(errors, warnings))));
        rightPane.add(new HTML("<h4>AST</h4>"));
        String outputAst = compiler.getRoot().toStringTree();
        rightPane.add(new Label(outputAst));
    }

    private void updateUiException(Exception e) {
        rightPane.clear();
        rightPane.add(new HTML("<h1>Exception</h1>"));
        rightPane.add(new Label(e.toString()));
    }

    @Override
    public void onModuleLoad() {
        externs.setCharacterWidth(80);
        externs.setVisibleLines(5);
        externs.setText("function Symbol() {}\n");
        externs.addKeyUpHandler(new KeyUpHandler() {
            @Override
            public void onKeyUp(KeyUpEvent event) {
                doCompile();
            }
        });

        input0.setCharacterWidth(80);
        input0.setVisibleLines(25);
        input0.addKeyUpHandler(new KeyUpHandler() {
            @Override
            public void onKeyUp(KeyUpEvent event) {
                doCompile();
            }
        });

        HorizontalPanel panel = new HorizontalPanel();
        VerticalPanel leftPane = new VerticalPanel();
        leftPane.add(new HTML("<h4>Externs</h4>"));
        leftPane.add(externs);
        leftPane.add(new HTML("<h4>Input</h4>"));
        leftPane.add(input0);
        leftPane.add(new HTML("<h4>Options</h4>"));
        createCheckboxes(leftPane);
        panel.add(leftPane);
        panel.add(rightPane);
        RootPanel.get().add(panel);
    }

    private void createCheckboxes(CellPanel checkboxPanel) {
        for (CompilationParam.ParamGroup group : CompilationParam.ParamGroup.values()) {
            SafeHtmlBuilder builder = new SafeHtmlBuilder();
            builder.appendHtmlConstant("<b>");
            builder.appendEscaped(group.name);
            builder.appendHtmlConstant("</b>");

            checkboxPanel.add(new HTML(builder.toSafeHtml()));
            for (final CompilationParam param : CompilationParam.getGroupedSortedValues().get(group)) {
                CheckBox cb = new CheckBox(param.toString());
                if (param.getJavaInfo() != null) {
                    cb.setTitle("Java API equivalent: " + param.getJavaInfo());
                }
                cb.setValue(param.getDefaultValue());
                param.apply(options, param.getDefaultValue());
                cb.addClickHandler(new ClickHandler() {
                    @Override
                    public void onClick(ClickEvent event) {
                        boolean checked = ((CheckBox) event.getSource()).getValue();
                        param.apply(options, checked);
                        doCompile();
                    }
                });
                checkboxPanel.add(cb);
            }
        }
    }
}