com.google.gwt.gen2.table.client.FixedWidthGridBulkRenderer.java Source code

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Here is the source code for com.google.gwt.gen2.table.client.FixedWidthGridBulkRenderer.java

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/*
 * Copyright 2008 Google Inc.
 * 
 * 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 com.google.gwt.gen2.table.client;

import com.google.gwt.gen2.table.override.client.HTMLTable;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Element;

import java.util.Iterator;

/**
 * Helper class to bulk load {@link FixedWidthGrid} tables.
 * 
 * @param <RowType> the data type of the row values
 */
public class FixedWidthGridBulkRenderer<RowType> extends SelectionGridBulkRenderer<RowType> {
    /**
     * Constructor. Takes in the number of columns in the table to allow efficient
     * creation of the header row.
     * 
     * @param grid {@link FixedWidthGrid} to be be bulk rendered
     * @param tableDef the table definition that should be used during rendering
     */
    public FixedWidthGridBulkRenderer(FixedWidthGrid grid, TableDefinition<RowType> tableDef) {
        super(grid, tableDef);
    }

    /**
     * Constructor. Takes in the number of columns in the table to allow efficient
     * creation of the header row.
     * 
     * @param grid {@link FixedWidthGrid} to be be bulk rendered
     * @param sourceTableDef the external source of the table definition
     */
    public FixedWidthGridBulkRenderer(FixedWidthGrid grid, HasTableDefinition<RowType> sourceTableDef) {
        super(grid, sourceTableDef);
    }

    /**
     * Gets the new ghost element from the table.
     * 
     * @param table the table
     * @return the new ghost row
     */
    protected native Element getBulkLoadedGhostRow(HTMLTable table)
    /*-{
      return table.@com.google.gwt.gen2.table.override.client.HTMLTable::getBodyElement()(table).rows[0];
    }-*/;

    @Override
    protected void renderRows(Iterator<RowType> iterator, final RenderingOptions options) {
        FixedWidthGrid table = (FixedWidthGrid) super.getTable();
        options.headerRow = DOM.toString(table.getGhostRow());
        super.renderRows(iterator, options);
    }

    @Override
    protected void renderRows(String rawHTMLTable) {
        super.renderRows(rawHTMLTable);

        // Update the ghost row variable after the num columns has been set
        Element newGhostRow = getBulkLoadedGhostRow(getTable());
        FixedWidthGrid grid = (FixedWidthGrid) getTable();
        grid.setGhostRow(newGhostRow);
        grid.updateGhostRow();
    }
}