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/*
* Copyright 2000-2022 Vaadin Ltd.
*
* 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.vaadin.v7.client.widget.grid;
import com.google.gwt.dom.client.TableCellElement;
import com.vaadin.v7.client.widget.escalator.FlyweightCell;
import com.vaadin.v7.client.widgets.Grid;
/**
* A data class which contains information which identifies a cell being
* rendered in a {@link Grid}.
* <p>
* Since this class follows the <code>Flyweight</code>-pattern any instance of
* this object is subject to change without the user knowing it and so should
* not be stored anywhere outside of the method providing these instances.
*
* @since 7.4
* @author Vaadin Ltd
*/
public class RendererCellReference extends CellReference<Object> {
/**
* Creates a new renderer cell reference bound to a row reference.
*
* @param rowReference
* the row reference to bind to
*/
public RendererCellReference(RowReference<Object> rowReference) {
super(rowReference);
}
private FlyweightCell cell;
/**
* Sets the identifying information for this cell.
*
* @param cell
* the flyweight cell to reference
* @param columnIndex
* the index of the column in the grid, including hidden cells
* @param column
* the column to reference
*/
public void set(FlyweightCell cell, int columnIndex,
Grid.Column<?, ?> column) {
this.cell = cell;
super.set(cell.getColumn(), columnIndex,
(Grid.Column<?, Object>) column);
}
/**
* Returns the element of the cell. Can be either a <code>TD</code> element
* or a <code>TH</code> element.
*
* @return the element of the cell
*/
@Override
public TableCellElement getElement() {
return cell.getElement();
}
/**
* Sets the colspan attribute of the element of this cell.
*
* @param numberOfCells
* the number of columns that the cell should span
*/
public void setColSpan(int numberOfCells) {
cell.setColSpan(numberOfCells);
}
/**
* Gets the colspan attribute of the element of this cell.
*
* @return the number of columns that the cell should span
*/
public int getColSpan() {
return cell.getColSpan();
}
}
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