org.dataconservancy.dcs.access.client.model.JsMetadata.java Source code

Introduction

Here is the source code for org.dataconservancy.dcs.access.client.model.JsMetadata.java

Source

/*
 * Copyright 2012 Johns Hopkins University
 *
 * 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.dataconservancy.dcs.access.client.model;

import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.JsArray;
import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.PreElement;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.*;
import org.dataconservancy.dcs.access.client.api.TransformerService;
import org.dataconservancy.dcs.access.client.api.TransformerServiceAsync;
import org.dataconservancy.dcs.access.client.model.SchemaType.Name;
import org.dataconservancy.dcs.access.ui.client.model.JsModel;

/**
 * Models a Data Conservancy metadata blob
 */
public final class JsMetadata extends JsModel {

    public static final TransformerServiceAsync transformer = GWT.create(TransformerService.class);

    protected JsMetadata() {

    }

    public String getSchemaUri() {
        return getString("schemaUri");
    }

    public String getMetadata() {
        return getString("metadata");
    }

    public void setMetadata(String metadata) {
        set("metadata", metadata);
    }

    public String getString() {
        return "{" + "\"schemaUri\":\"" + getSchemaUri() + "\"," + "\"metadata\":\"" + getMetadata() + "\"" + "}";
    }

    public Widget display() {

        String label = getSchemaUri().isEmpty() ? "Schema: Unknown" : "Schema: " + getSchemaUri();
        final String inputXml = getMetadata().replace("\n", "").replace("\t", "");

        final DisclosurePanel dp = new DisclosurePanel(label);
        dp.setAnimationEnabled(true);
        Label export = new Label();
        export.setText("Convert to ISO");
        export.addClickHandler(new ClickHandler() {

            @Override
            public void onClick(ClickEvent event) {
                try {
                    transformer.xslTransform(Name.FGDC, Name.ISO19115, inputXml, new AsyncCallback<String>() {

                        @Override
                        public void onFailure(Throwable caught) {
                            Window.alert("Unable to transform");

                        }

                        @Override
                        public void onSuccess(String output) {

                            HTML html = new HTML(output);
                            dp.setContent(html);
                            System.out.println(html);

                        }
                    });
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });

        dp.add(export);

        final AsyncCallback<String> transformCb = new AsyncCallback<String>() {

            @Override
            public void onFailure(Throwable caught) {
                Window.alert("Unable to transform");

            }

            @Override
            public void onSuccess(String fgdcHtml) {

                HTML html = new HTML(fgdcHtml);
                dp.add(html);
                //dp.setContent(html);
            }
        };

        AsyncCallback<Name> validateCb = new AsyncCallback<Name>() {

            @Override
            public void onFailure(Throwable caught) {
                Window.alert("Unable to validate");

            }

            @Override
            public void onSuccess(Name result) {
                if (result != null) {
                    try {
                        transformer.xslTransform(result, Name.HTML, inputXml, transformCb);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                } else
                    Window.alert("Does not match any of the existing schemas");
            }

        };

        transformer.validateXML(inputXml, getSchemaUri(), validateCb);
        return dp;
    }

    private Widget formatXML(String xml) {
        PreElement pre = Document.get().createPreElement();

        pre.setInnerText(xml.replace(">", ">\n"));
        return HTML.wrap(pre);

    }

    public static void display(Panel panel, JsArray<JsMetadata> array) {
        for (int i = 0; i < array.length(); i++) {
            panel.add(array.get(i).display());
        }
    }
}