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/*
* Copyright 2011 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;
/**
* This is a simple drop-down select without, for instance, support for
* multiselect, new items, lazyloading, and other advanced features. Sometimes
* "native" select without all the bells-and-whistles of the ComboBox is a
* better choice.
*/
@SuppressWarnings("serial")
public class NativeSelect extends AbstractSelect {
// width in characters, mimics TextField
private int columns = 0;
public NativeSelect() {
super();
}
public NativeSelect(String caption, Collection<?> options) {
super(caption, options);
}
public NativeSelect(String caption, Container dataSource) {
super(caption, dataSource);
}
public NativeSelect(String caption) {
super(caption);
}
/**
* Sets the width of the component so that it can display approximately the
* given number of letters.
* <p>
* Calling {@code setColumns(10);} is equivalent to calling
* {@code setWidth("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;
}
@Override
public void paintContent(PaintTarget target) throws PaintException {
target.addAttribute("type", "native");
// Adds the number of columns
if (columns != 0) {
target.addAttribute("cols", columns);
}
super.paintContent(target);
}
@Override
public void setMultiSelect(boolean multiSelect)
throws UnsupportedOperationException {
if (multiSelect == true) {
throw new UnsupportedOperationException("Multiselect not supported");
}
}
@Override
public void setNewItemsAllowed(boolean allowNewOptions)
throws UnsupportedOperationException {
if (allowNewOptions == true) {
throw new UnsupportedOperationException(
"newItemsAllowed not supported");
}
}
}
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