/*
* Copyright 2014 Red Hat, Inc. and/or its affiliates.
*
* 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 org.dashbuilder.displayer.client.widgets.filter;
import javax.enterprise.context.Dependent;
import javax.inject.Inject;
import com.google.gwt.user.client.ui.IsWidget;
import com.google.gwt.user.client.ui.Widget;
import org.uberfire.client.mvp.UberView;
import org.uberfire.mvp.Command;
@Dependent
public class NumberParameterEditor implements FunctionParameterEditor {
public interface View extends UberView<NumberParameterEditor> {
String getValue();
void setValue(String value);
void error();
void setFocus(boolean focus);
}
Command onChangeCommand = new Command() { public void execute() {} };
Number value;
View view;
@Inject
public NumberParameterEditor(View view) {
this.view = view;
this.view.init(this);
}
@Override
public Widget asWidget() {
return view.asWidget();
}
public void setOnChangeCommand(Command onChangeCommand) {
this.onChangeCommand = onChangeCommand;
}
public Number getValue() {
return value;
}
public void setValue(Number input) {
value = input;
view.setValue(format(value));
}
@Override
public void setFocus(boolean focus) {
view.setFocus(focus);
}
void valueChanged() {
try {
Number n = parse(view.getValue());
if (n == null) {
view.error();
} else {
value = n;
onChangeCommand.execute();
}
} catch (Exception e) {
view.error();
}
}
public Number parse(String s) throws Exception {
if (s == null || s.trim().length() == 0) {
return null;
}
return Double.parseDouble(s.trim());
}
public String format(Number n) {
return n.toString();
}
}