info.geekinaction.autoalert.view.dt.DataTable.java Source code

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Here is the source code for info.geekinaction.autoalert.view.dt.DataTable.java

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/*
 * Copyright (C) 2010 - present, Laszlo Csontos
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program 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 General Public License for more details.
 * 
 * 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 info.geekinaction.autoalert.view.dt;

import static info.geekinaction.autoalert.view.ViewConstants.CSS_TABLE;
import static info.geekinaction.autoalert.view.ViewConstants.CSS_TABLE_CELL;
import static info.geekinaction.autoalert.view.ViewConstants.CSS_TABLE_EVEN_ROW;
import static info.geekinaction.autoalert.view.ViewConstants.CSS_TABLE_FIRST_ROW;
import static info.geekinaction.autoalert.view.ViewConstants.CSS_TABLE_ODD_ROW;

import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.Widget;

/**
 * 
 * Datatable implementation.
 * 
 * @author lcsontos
 * 
 */
public class DataTable<E> extends FlexTable {

    /**
     * Table model of this list.
     */
    protected IDataTableModel<E> model;

    /**
     * 
     */
    public DataTable() {
        super();
        setStyleName(CSS_TABLE);
    }

    /**
     * 
     */
    public DataTable(IDataTableModel<E> model) {
        this();
        this.model = model;
        load();
    }

    /**
     *
     */
    public IDataTableModel<E> getModel() {
        return model;
    }

    /**
     * 
     * @param model
     */
    public void setModel(IDataTableModel<E> model) {
        this.model = model;
        load();
    }

    /**
     * 
     */
    private void load() {
        if (model == null)
            return;

        // Clear table
        for (int index = getRowCount() - 1; index >= 0; index--) {
            removeRow(index);
        }

        // Load data
        int columnNum = model.getColumnNum();
        int rowNum = model.getRowNum();
        for (int row = 0; row < rowNum; row++) {

            // Apply CSS to the whole row.
            String styleName = null;
            if (row < 1) {
                styleName = CSS_TABLE_FIRST_ROW;
            } else {
                styleName = (row % 2 == 0 ? CSS_TABLE_EVEN_ROW : CSS_TABLE_ODD_ROW);
            }

            getRowFormatter().addStyleName(row, styleName);

            for (int column = 0; column < columnNum; column++) {

                // Set alignment for the first row.
                if (row < 1) {
                    getCellFormatter().setHorizontalAlignment(row, column, HasHorizontalAlignment.ALIGN_CENTER);
                }

                // Apply CSS to an individual cell. 
                getCellFormatter().addStyleName(row, column, CSS_TABLE_CELL);

                Object obj = model.getObject(row, column);
                if (obj instanceof Widget) {
                    setWidget(row, column, (Widget) obj);
                } else {
                    String text = (obj != null) ? obj.toString() : null;
                    setText(row, column, text);
                }
            }
        }

    }

}