/**
* Sencha GXT 3.1.0-beta - Sencha for GWT
* Copyright(c) 2007-2014, Sencha, Inc.
* licensing@sencha.com
*
* http://www.sencha.com/products/gxt/license/
*/
package com.sencha.gxt.widget.core.client.grid.filters;
import java.util.Collections;
import java.util.List;
import com.sencha.gxt.core.client.ValueProvider;
import com.sencha.gxt.core.client.dom.XDOM;
import com.sencha.gxt.data.shared.loader.BooleanFilterHandler;
import com.sencha.gxt.data.shared.loader.FilterConfig;
import com.sencha.gxt.data.shared.loader.FilterConfigBean;
import com.sencha.gxt.messages.client.DefaultMessages;
import com.sencha.gxt.widget.core.client.event.CheckChangeEvent;
import com.sencha.gxt.widget.core.client.event.CheckChangeEvent.CheckChangeHandler;
import com.sencha.gxt.widget.core.client.menu.CheckMenuItem;
/**
* A boolean filter. See {@link Filter} for more information.
*
* @param <M> the model type
*/
public class BooleanFilter<M> extends Filter<M, Boolean> {
/**
* The locale-sensitive messages used by this class.
*/
public interface BooleanFilterMessages {
String noText();
String yesText();
}
/**
* The default locale-sensitive messages used by this class.
*/
public class DefaultBooleanFilterMessages implements BooleanFilterMessages {
@Override
public String noText() {
return DefaultMessages.getMessages().booleanFilter_noText();
}
@Override
public String yesText() {
return DefaultMessages.getMessages().booleanFilter_yesText();
}
}
private CheckMenuItem yesItem, noItem;
private BooleanFilterMessages messages = new DefaultBooleanFilterMessages();
private CheckChangeHandler<CheckMenuItem> handler = new CheckChangeHandler<CheckMenuItem>() {
@Override
public void onCheckChange(CheckChangeEvent<CheckMenuItem> event) {
fireUpdate();
}
};
/**
* Creates a boolean filter for the specified value provider. See
* {@link Filter#Filter(ValueProvider)} for more information.
*
* @param valueProvider the value provider
*/
public BooleanFilter(ValueProvider<? super M, Boolean> valueProvider) {
super(valueProvider);
setHandler(new BooleanFilterHandler());
yesItem = new CheckMenuItem();
yesItem.addCheckChangeHandler(handler);
yesItem.setGroup(XDOM.getUniqueId());
noItem = new CheckMenuItem();
noItem.addCheckChangeHandler(handler);
noItem.setGroup(yesItem.getGroup());
menu.add(yesItem);
menu.add(noItem);
setMessages(messages);
}
@Override
public List<FilterConfig> getFilterConfig() {
FilterConfigBean config = new FilterConfigBean();
config.setType("boolean");
config.setValue(getHandler().convertToString((Boolean) getValue()));
return Collections.<FilterConfig>singletonList(config);
}
/**
* Returns the locale-sensitive messages used by this class.
*
* @return the local-sensitive messages used by this class.
*/
public BooleanFilterMessages getMessages() {
return messages;
}
@Override
public Object getValue() {
return Boolean.valueOf(yesItem.isChecked());
}
@Override
public boolean isActive() {
return super.isActive();
}
/**
* Sets the local-sensitive messages used by this class.
*
* @param messages the locale sensitive messages used by this class.
*/
public void setMessages(BooleanFilterMessages messages) {
this.messages = messages;
yesItem.setText(getMessages().yesText());
noItem.setText(getMessages().noText());
}
@Override
protected Class<Boolean> getType() {
return Boolean.class;
}
@Override
protected boolean isActivatable() {
return super.isActivatable();
}
@Override
protected boolean validateModel(M model) {
Boolean val = getValueProvider().getValue(model);
return getValue().equals(val == null ? Boolean.FALSE : val);
}
}