Ensure the pager buttons are always visible for related lists.

[online-glom:gwt-glom.git] / src / main / java / org / glom / web / client / ui / cell / TextCell.java

/*
 * Copyright (C) 2011 Openismus GmbH
 *
 * This file is part of GWT-Glom.
 *
 * GWT-Glom is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * GWT-Glom is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with GWT-Glom.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.glom.web.client.ui.cell;

import org.glom.web.shared.layout.LayoutItemField.GlomFieldType;

import com.google.gwt.cell.client.AbstractCell;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;

/**
 * Cell renderer for {@link GlomFieldType} TYPE_TEXT.
 * 
 * @author Ben Konrath <ben@bagu.org>
 * 
 */
public class TextCell extends AbstractCell<String> {
        SafeHtml colourCSSProp;
        SafeHtml backgroundColourCSSProp;

        // TODO Find a way to set the colours on the whole column
        public TextCell(String foregroundColour, String backgroundColour) {
                if (foregroundColour != null && !foregroundColour.isEmpty()) {
                        colourCSSProp = SafeHtmlUtils.fromString("color:" + foregroundColour + ";");
                } else {
                        colourCSSProp = SafeHtmlUtils.fromSafeConstant("");
                }
                if (backgroundColour != null && !backgroundColour.isEmpty()) {
                        backgroundColourCSSProp = SafeHtmlUtils.fromString("background-color:" + backgroundColour + ";");
                } else {
                        backgroundColourCSSProp = SafeHtmlUtils.fromSafeConstant("");
                }
        }

        /*
         * (non-Javadoc)
         * 
         * @see com.google.gwt.cell.client.AbstractCell#render(com.google.gwt.cell.client.Cell.Context, java.lang.Object,
         * com.google.gwt.safehtml.shared.SafeHtmlBuilder)
         */
        @Override
        public void render(Context context, String value, SafeHtmlBuilder sb) {
                if (value == null) {
                        // The value is from an empty row.
                        sb.appendHtmlConstant("&nbsp;");
                        return;
                }

                // Set the text and some CSS properties for the text.
                // The overflow and text-overflow properties tell the browser to add an ellipsis when the text overflows the
                // table cell.
                // FIXME this isn't using safe html correctly!
                sb.appendHtmlConstant("<div style=\"overflow: hidden; text-overflow: ellipsis; " + colourCSSProp.asString()
                                + backgroundColourCSSProp.asString() + "\">");
                sb.append(SafeHtmlUtils.fromString(value));
                sb.appendHtmlConstant("</div>");

        }
}