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/*
* Copyright 2000-2014 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.ui;
import java.util.Collection;
import com.vaadin.data.Container;
import com.vaadin.server.PaintException;
import com.vaadin.server.PaintTarget;
import com.vaadin.shared.ui.twincolselect.TwinColSelectConstants;
/**
* Multiselect component with two lists: left side for available items and right
* side for selected items.
*/
@SuppressWarnings("serial")
public class TwinColSelect extends AbstractSelect {
private int columns = 0;
private int rows = 0;
private String leftColumnCaption;
private String rightColumnCaption;
/**
*
*/
public TwinColSelect() {
super();
setMultiSelect(true);
}
/**
* @param caption
*/
public TwinColSelect(String caption) {
super(caption);
setMultiSelect(true);
}
/**
* @param caption
* @param dataSource
*/
public TwinColSelect(String caption, Container dataSource) {
super(caption, dataSource);
setMultiSelect(true);
}
/**
* Sets the width of the component so that it displays approximately the
* given number of letters in each of the two selects.
* <p>
* Calling {@code setColumns(10);} is roughly equivalent to calling
* {@code setWidth((10*2+4)+"10em");}
* </p>
*
* @deprecated As of 7.0. "Columns" does not reflect the exact number of
* characters that will be displayed. It is better to use
* setWidth together with "em" to control the width of the
* field.
* @param columns
* the number of columns to set.
*/
@Deprecated
public void setColumns(int columns) {
if (columns < 0) {
columns = 0;
}
if (this.columns != columns) {
this.columns = columns;
markAsDirty();
}
}
/**
* Gets the number of columns for the component.
*
* @see #setColumns(int)
* @deprecated As of 7.0. "Columns" does not reflect the exact number of
* characters that will be displayed. It is better to use
* setWidth together with "em" to control the width of the
* field.
*/
@Deprecated
public int getColumns() {
return columns;
}
public int getRows() {
return rows;
}
/**
* Sets the number of rows in the editor. If the number of rows is set to 0,
* the actual number of displayed rows is determined implicitly by the
* adapter.
* <p>
* If a height if set (using {@link #setHeight(String)} or
* {@link #setHeight(float, int)}) it overrides the number of rows. Leave
* the height undefined to use this method. This is the opposite of how
* {@link #setColumns(int)} work.
*
*
* @param rows
* the number of rows to set.
*/
public void setRows(int rows) {
if (rows < 0) {
rows = 0;
}
if (this.rows != rows) {
this.rows = rows;
markAsDirty();
}
}
/**
* @param caption
* @param options
*/
public TwinColSelect(String caption, Collection<?> options) {
super(caption, options);
setMultiSelect(true);
}
@Override
public void paintContent(PaintTarget target) throws PaintException {
target.addAttribute("type", "twincol");
// Adds the number of columns
if (columns != 0) {
target.addAttribute("cols", columns);
}
// Adds the number of rows
if (rows != 0) {
target.addAttribute("rows", rows);
}
// Right and left column captions and/or icons (if set)
String lc = getLeftColumnCaption();
String rc = getRightColumnCaption();
if (lc != null) {
target.addAttribute(TwinColSelectConstants.ATTRIBUTE_LEFT_CAPTION,
lc);
}
if (rc != null) {
target.addAttribute(TwinColSelectConstants.ATTRIBUTE_RIGHT_CAPTION,
rc);
}
super.paintContent(target);
}
/**
* Sets the text shown above the right column.
*
* @param caption
* The text to show
*/
public void setRightColumnCaption(String rightColumnCaption) {
this.rightColumnCaption = rightColumnCaption;
markAsDirty();
}
/**
* Returns the text shown above the right column.
*
* @return The text shown or null if not set.
*/
public String getRightColumnCaption() {
return rightColumnCaption;
}
/**
* Sets the text shown above the left column.
*
* @param caption
* The text to show
*/
public void setLeftColumnCaption(String leftColumnCaption) {
this.leftColumnCaption = leftColumnCaption;
markAsDirty();
}
/**
* Returns the text shown above the left column.
*
* @return The text shown or null if not set.
*/
public String getLeftColumnCaption() {
return leftColumnCaption;
}
}
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