de.uni_koeln.spinfo.maalr.webapp.ui.user.client.entry.OverlayPopup.java Source code

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Here is the source code for de.uni_koeln.spinfo.maalr.webapp.ui.user.client.entry.OverlayPopup.java

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/*******************************************************************************
 * Copyright 2013 Sprachliche Informationsverarbeitung, University of Cologne
 * 
 * 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 de.uni_koeln.spinfo.maalr.webapp.ui.user.client.entry;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;

import com.github.gwtbootstrap.client.ui.Button;
import com.github.gwtbootstrap.client.ui.Modal;
import com.github.gwtbootstrap.client.ui.ModalFooter;
import com.github.gwtbootstrap.client.ui.constants.BackdropType;
import com.google.gwt.core.shared.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.regexp.shared.MatchResult;
import com.google.gwt.regexp.shared.RegExp;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.HTML;

import de.uni_koeln.spinfo.maalr.common.shared.LemmaVersion;
import de.uni_koeln.spinfo.maalr.common.shared.Overlay;
import de.uni_koeln.spinfo.maalr.services.user.shared.SearchService;
import de.uni_koeln.spinfo.maalr.services.user.shared.SearchServiceAsync;

public class OverlayPopup {

    private static Map<String, Overlay> cache = new HashMap<String, Overlay>();

    private static SearchServiceAsync service = GWT.create(SearchService.class);

    public static void show(final LemmaVersion lemmaVersion, String overlayField, final String closeButton) {
        final String overlayType = lemmaVersion.getEntryValue(overlayField);
        Overlay overlay = cache.get(overlayType);
        if (overlay == null) {
            service.getOverlay(overlayType, new AsyncCallback<Overlay>() {

                @Override
                public void onFailure(Throwable caught) {
                    // TODO Auto-generated method stub
                }

                @Override
                public void onSuccess(Overlay result) {
                    if (result == null)
                        return;
                    cache.put(overlayType, result);
                    createOverlay(result, lemmaVersion, closeButton);
                }
            });
        } else {
            createOverlay(overlay, lemmaVersion, closeButton);
        }
    }

    /*
     * Overlay displayed for verb conjugations
     */
    private static void createOverlay(Overlay overlay, LemmaVersion lemmaVersion, String closeButton) {
        String form = overlay.getForm();
        HashSet<String> values = new HashSet<String>();
        RegExp regExp = RegExp.compile("(\\$\\{(.*)\\})", "g");
        for (MatchResult matcher = regExp.exec(form); matcher != null; matcher = regExp.exec(form)) {
            values.add(matcher.getGroup(2));
        }
        for (String key : values) {
            String value = lemmaVersion.getEntryValue(key);
            if (value == null || value.trim().length() == 0) {
                form = form.replaceAll("\\$\\{" + key + "\\}", "");
            } else {
                SafeHtmlBuilder builder = new SafeHtmlBuilder();
                builder.appendEscaped(value);
                form = form.replaceAll("\\$\\{" + key + "\\}", builder.toSafeHtml().asString());
            }
        }
        SafeHtmlBuilder builder = new SafeHtmlBuilder();
        builder.appendHtmlConstant(form);
        final Modal popup = new Modal(true);
        popup.add(new HTML(builder.toSafeHtml()));
        popup.setBackdrop(BackdropType.NORMAL);
        popup.setCloseVisible(true);
        popup.setWidth(1000);

        final Button close = new Button(closeButton);
        close.addClickHandler(new ClickHandler() {

            @Override
            public void onClick(ClickEvent event) {
                popup.hide();
            }
        });
        ModalFooter footer = new ModalFooter(close);
        popup.add(footer);
        popup.show();
    }

}