com.mymita.vaadlets.demo.AddonDemoApplication.java Source code

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Here is the source code for com.mymita.vaadlets.demo.AddonDemoApplication.java

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/*******************************************************************************
 * Copyright 2012 Andreas Hhmann (mymita.com)
 * 
 * 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.mymita.vaadlets.demo;

import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.StringWriter;

import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
import org.springframework.core.io.ClassPathResource;

import com.google.common.io.CharStreams;
import com.mymita.vaadlets.VaadletsBuilder;
import com.vaadin.Application;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Button.ClickListener;
import com.vaadin.ui.Label;
import com.vaadin.ui.Panel;
import com.vaadin.ui.TextField;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.Window;

public class AddonDemoApplication extends Application {

    private static final Log LOG = LogFactory.getLog(AddonDemoApplication.class);

    private static final long serialVersionUID = 4745768698981212574L;

    private static VerticalLayout createStackTraceLabel(final Exception e) {
        final VerticalLayout vl = new VerticalLayout();
        vl.setMargin(true);
        vl.addComponent(new Label("<h1>Error</h1>", Label.CONTENT_XHTML));
        final StringWriter buf = new StringWriter();
        e.printStackTrace(new PrintWriter(buf));
        vl.addComponent(new Label(buf.toString(), Label.CONTENT_PREFORMATTED));
        return vl;
    }

    private static void fillEditorWithDefaultXML(final VaadletsBuilder vaadlets) {
        vaadlets.<Panel>getComponent("content").getContent().removeAllComponents();
        final TextField editor = vaadlets.getComponent("editor");
        try {
            editor.setValue(CharStreams.toString(new InputStreamReader(
                    new ClassPathResource("startingPoint.xml", AddonDemoApplication.class).getInputStream(),
                    "UTF-8")));
        } catch (final IOException e) {
        }
    }

    @Override
    public void init() {
        try {
            final VaadletsBuilder vaadletsBuilder = VaadletsBuilder.build(new InputStreamReader(
                    new ClassPathResource("demo.xml", AddonDemoApplication.class).getInputStream()));
            final Window root = (Window) vaadletsBuilder.getRoot();
            setMainWindow(root);
            setTheme("vaadlets");
            final Button testButton = vaadletsBuilder.getComponent("test");
            testButton.addListener(new ClickListener() {

                @Override
                public void buttonClick(final ClickEvent event) {
                    final Panel content = vaadletsBuilder.getComponent("content");
                    final TextField editor = vaadletsBuilder.getComponent("editor");
                    content.getContent().removeAllComponents();
                    try {
                        final VaadletsBuilder v = VaadletsBuilder
                                .build(CharStreams.newReaderSupplier((String) editor.getValue()).getInput());
                        if (v.getRoot() instanceof Window) {
                            final Window w = (Window) v.getRoot();
                            root.addWindow(w);
                        } else {
                            content.getContent().addComponent(v.getRoot());
                        }
                    } catch (final Exception e) {
                        LOG.error("error", e);
                        content.addComponent(createStackTraceLabel(e));
                    }
                }
            });
            final Button resetButton = vaadletsBuilder.getComponent("reset");
            resetButton.addListener(new ClickListener() {

                @Override
                public void buttonClick(final ClickEvent event) {
                    fillEditorWithDefaultXML(vaadletsBuilder);
                }
            });
            fillEditorWithDefaultXML(vaadletsBuilder);
        } catch (final IOException e) {
        }
    }
}