litesoft
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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; /** * Allows bulk rendering of {@link Grid}s. * <p> * Must use the {@link Grid} in the overrides package. * </p> * * @param <RowType> the data type of the row values */ public class GridBulkRenderer<RowType> extends TableBulkRenderer<RowType> { /** * Construct a new {@link GridBulkRenderer}. * * @param grid {@link Grid} to be be bulk rendered * @param tableDef the table definition that should be used during rendering */ public GridBulkRenderer( Grid grid, TableDefinition<RowType> tableDef ) { super( grid, tableDef ); init( grid ); } /** * Construct a new {@link GridBulkRenderer}. * * @param grid {@link Grid} to be be bulk rendered * @param sourceTableDef the external source of the table definition */ public GridBulkRenderer( Grid grid, HasTableDefinition<RowType> sourceTableDef ) { super( grid, sourceTableDef ); init( grid ); } @Override protected void renderRows( String rawHTMLTable ) { super.renderRows( rawHTMLTable ); setGridDimensions( (Grid) getTable() ); } /** * Short term hack to set protected row and columns. */ native void setGridDimensions( Grid table ) /*-{ var numRows = table.@com.google.gwt.gen2.table.client.HTMLTable::getDOMRowCount()(); table.@com.google.gwt.gen2.table.client.Grid::numRows = numRows; var cellCount = 0; if ( numRows > 0 ) { cellCount = table.@com.google.gwt.gen2.table.client.HTMLTable::getDOMCellCount(I)( 0 ); } table.@com.google.gwt.gen2.table.client.Grid::numColumns = cellCount; }-*/; private void init( Grid grid ) { if ( grid instanceof FixedWidthGrid && (!(this instanceof FixedWidthGridBulkRenderer)) ) { throw new UnsupportedOperationException( "Must use a FixedWidthGridBulkLoader to bulk load a fixed grid" ); } if ( grid instanceof SelectionGrid && (!(this instanceof SelectionGridBulkRenderer)) ) { throw new UnsupportedOperationException( "Must use a SelectionGridBulkLoader to bulk load a selection grid" ); } } } |