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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.TableRowElement;
import com.vaadin.v7.client.widgets.Grid;
/**
* A data class which contains information which identifies a row 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.
*
* @author Vaadin Ltd
* @param <T>
* the row object type
* @since 7.4
*/
public class RowReference<T> {
private final Grid<T> grid;
private int rowIndex;
private T row;
private TableRowElement element;
/**
* Creates a new row reference for the given grid.
*
* @param grid
* the grid that the row belongs to
*/
public RowReference(Grid<T> grid) {
this.grid = grid;
}
/**
* Sets the identifying information for this row.
*
* @param rowIndex
* the index of the row
* @param row
* the row object
* @param element
* the element of the row
*/
public void set(int rowIndex, T row, TableRowElement element) {
this.rowIndex = rowIndex;
this.row = row;
this.element = element;
}
/**
* Gets the grid that contains the referenced row.
*
* @return the grid that contains referenced row
*/
public Grid<T> getGrid() {
return grid;
}
/**
* Gets the row index of the row.
*
* @return the index of the row
*/
public int getRowIndex() {
return rowIndex;
}
/**
* Gets the row data object.
*
* @return the row object
*/
public T getRow() {
return row;
}
/**
* Gets the table row element of the row.
*
* @return the element of the row
*/
public TableRowElement getElement() {
return element;
}
}
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