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package ch.asynk.helloworld;
import com.vaadin.terminal.UserError;
import com.vaadin.data.Property;
import com.vaadin.data.Property.ValueChangeEvent;
import com.vaadin.data.util.ObjectProperty;
import com.vaadin.data.Validator;
import com.vaadin.data.validator.DoubleValidator;
import com.vaadin.ui.FormLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.TextField;
public class DataMappingLayout extends FormLayout {
//
private static final long serialVersionUID = 1L;
//
private Context ctx = null;
public DataMappingLayout(Context context) {
ctx = context;
//
final TextField tf1 = new TextField("Property.ValueChangeListener");
tf1.setImmediate(true);
addComponent(tf1);
final Label lb1 = new Label();
lb1.setCaption("The Value");
addComponent(lb1);
tf1.addListener( new Property.ValueChangeListener() {
@Override
public void valueChange(ValueChangeEvent event) {
String value = (String) tf1.getValue();
lb1.setValue(value);
}
});
//
Double trouble = 66.6;
final ObjectProperty<Double> property = new ObjectProperty<Double>(trouble);
final TextField tf2 = new TextField("ObjectProperty + Validator", property);
tf2.setImmediate(true);
tf2.addValidator( new DoubleValidator("It should be a double") );
//tf2.setValidationVisible(false); // nothing will happen
addComponent(tf2);
final Label lb2 = new Label(property);
lb2.setCaption("The Value");
addComponent(lb2);
//
final TextField tf3 = new TextField("No spaces");
addComponent(tf3);
tf3.setComponentError(null); // (actually the default)
final Button b1 = new Button("Ok!");
addComponent(b1);
b1.addListener(new Button.ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
if (! ((String) tf3.getValue()).matches("^\\w*$")) {
tf3.setComponentError(new UserError("Must be letters and numbers"));
} else {
tf3.setComponentError(null);
}
}
});
//
// final Validator intValidator = new Validator() { ... }
class MyIntValidator implements Validator {
public boolean isValid(Object value) {
if (value == null || !(value instanceof String)) {
return false;
}
return ((String) value).matches("[1-9][0-9]{4}");
}
public void validate(Object value) throws InvalidValueException {
if (!isValid(value)) {
if (value != null && value.toString().startsWith("0")) {
throw new InvalidValueException("Must not start with a zero.");
} else {
throw new InvalidValueException("Must be a number 10000-99999.");
}
}
}
};
final TextField tf5 = new TextField("MyIntValidator");
tf5.addValidator(new MyIntValidator());
tf5.setImmediate(true);
addComponent(tf5);
//
class IntegerObjectProperty implements Property {
Integer data = 0;
boolean readOnly = false;
public Class<?> getType() {
return Integer.class;
}
public Object getValue() {
return data;
}
public boolean isReadOnly() {
return readOnly;
}
public void setReadOnly(boolean newStatus) {
readOnly = newStatus;
}
public void setValue(Object newValue) throws ReadOnlyException, ConversionException {
if (readOnly)
throw new ReadOnlyException();
if (newValue instanceof Integer)
data = (Integer) newValue;
else if (newValue instanceof String)
try {
data = Integer.parseInt((String) newValue, 16);
} catch (NumberFormatException e) {
throw new ConversionException("Must be an integer (from property)");
}
else
throw new ConversionException("Unknown entry type (from property)");
}
@Override
public String toString() {
return Integer.toHexString(data)+" (hex)";
}
};
final IntegerObjectProperty intProperty = new IntegerObjectProperty();
intProperty.setValue(666);
final TextField tf4 = new TextField("MyObjectProperty",intProperty);
tf4.setImmediate(true);
tf4.setErrorHandler(new ComponentErrorHandler() {
@Override
public boolean handleComponentError(ComponentErrorEvent event) {
tf4.setComponentError(new UserError("Must be an integer (from handler)"));
return true;
}
});
addComponent(tf4);
//
Button nextButton = new Button("next layout");
nextButton.setDescription("Go to next layout");
addComponent(nextButton );
nextButton.addListener( new Button.ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
getApplication().getMainWindow().setContent( new LayoutLayout(ctx) );
}
});
}
}
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