org.obiba.opal.web.gwt.app.client.ui.celltable.AttributeColumn.java Source code

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Here is the source code for org.obiba.opal.web.gwt.app.client.ui.celltable.AttributeColumn.java

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/*******************************************************************************
 * Copyright (c) 2012 OBiBa. All rights reserved.
 *
 * This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package org.obiba.opal.web.gwt.app.client.ui.celltable;

import org.obiba.opal.web.gwt.app.client.js.JsArrays;
import org.obiba.opal.web.gwt.app.client.support.AttributeDtos;
import org.obiba.opal.web.model.client.magma.AttributeDto;

import com.google.gwt.cell.client.TextCell;
import com.google.gwt.core.client.JsArray;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;
import com.google.gwt.safehtml.shared.UriUtils;
import com.google.gwt.text.shared.SafeHtmlRenderer;
import com.google.gwt.user.cellview.client.Column;

public abstract class AttributeColumn<T> extends Column<T, String> {

    private final String attributeName;

    public AttributeColumn(String attributeName) {
        super(new TextCell(new SafeHtmlRenderer<String>() {

            @Override
            public SafeHtml render(String object) {
                return object == null ? SafeHtmlUtils.EMPTY_SAFE_HTML : SafeHtmlUtils.fromTrustedString(object);
            }

            @Override
            public void render(String object, SafeHtmlBuilder appendable) {
                appendable.append(SafeHtmlUtils.fromTrustedString(object));
            }
        }));
        this.attributeName = attributeName;
    }

    protected abstract JsArray<AttributeDto> getAttributes(T object);

    protected String getAttributeName(T object) {
        return attributeName;
    }

    @Override
    public String getValue(T object) {
        return getLabels(object);
    }

    private String getLabels(T object) {
        JsArray<AttributeDto> attributes = JsArrays.toSafeArray(getAttributes(object));
        AttributeDto attribute = null;
        StringBuilder labels = new StringBuilder();

        for (int i = 0; i < attributes.length(); i++) {
            attribute = attributes.get(i);
            if (attribute.getName().equals(getAttributeName(object))) {
                appendLabel(attribute, labels);
            }
        }

        return labels.toString();
    }

    private void appendLabel(AttributeDto attr, StringBuilder labels) {
        if (attr.hasValue() && attr.getValue().trim().length() > 0) {
            labels.append("<div class=\"attribute-value\">");
            if (AttributeDtos.SCRIPT_ATTRIBUTE.equals(attr.getName())) {
                labels.append("<pre>");
            }
            if (attr.hasLocale() && attr.getLocale().trim().length() > 0) {
                labels.append("<span class=\"label\">").append(attr.getLocale()).append("</span> ");
            }
            String value = attr.getValue();
            String safeValue = SafeHtmlUtils.fromString(value).asString().replaceAll("\\n", "<br />");
            try {
                if (UriUtils.extractScheme(value) != null && UriUtils.isSafeUri(value)) {
                    labels.append("<a href=").append(value).append(" target=\"_blank\">").append(safeValue)
                            .append("</a>");
                } else {
                    labels.append(safeValue);
                }
            } catch (Exception e) {
                labels.append(safeValue);
            }
            if (AttributeDtos.SCRIPT_ATTRIBUTE.equals(attr.getName())) {
                labels.append("</pre>");
            }
            labels.append("</div>");
        }
    }
}