/*
* RmdNullableOption.java
*
* Copyright (C) 2009-14 by RStudio, Inc.
*
* Unless you have received this program directly from RStudio pursuant
* to the terms of a commercial license agreement with RStudio, then
* this program is licensed to you under the terms of version 3 of the
* GNU Affero General Public License. This program is distributed WITHOUT
* ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
* AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
*
*/
package org.rstudio.studio.client.rmarkdown.ui;
import org.rstudio.studio.client.rmarkdown.model.RmdTemplateFormatOption;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.user.client.ui.CheckBox;
import com.google.gwt.user.client.ui.InlineLabel;
import com.google.gwt.user.client.ui.Widget;
public abstract class RmdNullableOption extends RmdBaseOption
{
public RmdNullableOption(RmdTemplateFormatOption option, String initialValue)
{
super(option);
if (option.isNullable())
{
nonNullCheck_ = new CheckBox(option.getUiName() + ": ");
nonNullCheck_.setValue(!initialValue.equals("null"));
nonNullCheck_.addValueChangeHandler(new ValueChangeHandler<Boolean>()
{
@Override
public void onValueChange(ValueChangeEvent<Boolean> event)
{
updateNull();
}
});
}
}
public abstract void updateNull();
protected boolean valueIsNull()
{
return nonNullCheck_ != null && !nonNullCheck_.getValue();
}
protected Widget getOptionLabelWidget()
{
if (nonNullCheck_ != null)
return nonNullCheck_;
else
return new InlineLabel(getOption().getUiName() + ": ");
}
private CheckBox nonNullCheck_;
}