com.holonplatform.vaadin7.internal.components.StringArea Maven / Gradle / Ivy
/*
* Copyright 2016-2017 Axioma srl.
*
* 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.holonplatform.vaadin7.internal.components;
import com.holonplatform.vaadin7.Registration;
import com.holonplatform.vaadin7.components.Input;
import com.holonplatform.vaadin7.components.builders.StringInputBuilder;
import com.holonplatform.vaadin7.internal.components.builders.AbstractStringFieldBuilder;
import com.vaadin.data.Property;
import com.vaadin.data.Validator.InvalidValueException;
import com.vaadin.ui.Component;
import com.vaadin.ui.Field;
import com.vaadin.ui.TextArea;
/**
* A {@link String} type {@link Input} area field.
*
* @since 5.0.0
*/
public class StringArea extends TextArea implements Input, RequiredIndicatorSupport {
private static final long serialVersionUID = -4631138014420796152L;
/**
* Required indicator
*/
private boolean requiredIndicatorOnly = false;
/**
* Treat empty values as null values
*/
private boolean emptyValuesAsNull = true;
/**
* Treat blank values as null values
*/
private boolean blankValuesAsNull = false;
/**
* Constructs an empty StringArea with no caption.
*/
public StringArea() {
super();
init();
}
/**
* Constructs a new StringArea that's bound to the specified Property and has no caption.
* @param dataSource the Property to be edited with this editor.
*/
@SuppressWarnings("rawtypes")
public StringArea(Property dataSource) {
super(dataSource);
init();
}
/**
* Constructs a new StringArea that's bound to the specified Property and has the given
* caption String.
* @param caption the caption for the editor.
* @param dataSource the Property to be edited with this editor.
*/
@SuppressWarnings("rawtypes")
public StringArea(String caption, Property dataSource) {
super(caption, dataSource);
init();
}
/**
* Constructs an empty StringArea with given caption and given initial value.
* @param caption the field caption.
* @param value Initial value.
*/
public StringArea(String caption, String value) {
super(caption, value);
init();
}
/**
* Constructs an empty StringArea with given caption.
* @param caption the field caption.
*/
public StringArea(String caption) {
super(caption);
init();
}
/**
* Init field
*/
protected void init() {
addStyleName("h-field");
addStyleName("h-stringfield");
}
/*
* (non-Javadoc)
* @see com.holonplatform.vaadin.components.Input#getComponent()
*/
@Override
public Component getComponent() {
return this;
}
/**
* Init field with and intenal null value, instead of default empty String value
*/
public void initWithNullValue() {
super.setInternalValue(null);
}
/**
* Gets whether to treat empty String values as null values
* @return true to treat empty String values as null values, false otherwise
*/
public boolean isEmptyValuesAsNull() {
return emptyValuesAsNull;
}
/**
* Sets whether to treat empty String values as null values
* @param emptyValuesAsNull true to treat empty String values as null values, false
* otherwise
*/
public void setEmptyValuesAsNull(boolean emptyValuesAsNull) {
this.emptyValuesAsNull = emptyValuesAsNull;
if (!emptyValuesAsNull && !blankValuesAsNull) {
super.setInternalValue("");
} else {
initWithNullValue();
}
}
/**
* Gets whether to treat blank String values (empty or whitespaces only) as null values
* @return true to treat blank String values (empty or whitespaces only) as null values,
* false otherwise
*/
public boolean isBlankValuesAsNull() {
return blankValuesAsNull;
}
/**
* Sets whether to treat blank String values (empty or whitespaces only) as null values
* @param blankValuesAsNull true to treat blank String values (empty or whitespaces only) as
* null values, false otherwise
*/
public void setBlankValuesAsNull(boolean blankValuesAsNull) {
this.blankValuesAsNull = blankValuesAsNull;
if (!emptyValuesAsNull && !blankValuesAsNull) {
super.setInternalValue("");
} else {
initWithNullValue();
}
}
/*
* (non-Javadoc)
* @see com.holonplatform.vaadin.internal.components.RequiredIndicatorSupport#setRequiredIndicatorVisible(boolean)
*/
@Override
public void setRequiredIndicatorVisible(boolean requiredIndicatorVisible) {
super.setRequired(requiredIndicatorVisible);
this.requiredIndicatorOnly = requiredIndicatorVisible;
}
/*
* (non-Javadoc)
* @see com.holonplatform.vaadin.internal.components.RequiredIndicatorSupport#isRequiredIndicatorVisible()
*/
@Override
public boolean isRequiredIndicatorVisible() {
return isRequired() || requiredIndicatorOnly;
}
/*
* (non-Javadoc)
* @see com.vaadin.ui.AbstractField#validateValue()
*/
@Override
public void validate() throws InvalidValueException {
if (requiredIndicatorOnly) {
super.validate(getValue());
} else {
super.validate();
}
}
/*
* (non-Javadoc)
* @see com.holonplatform.vaadin.components.ValueHolder#getEmptyValue()
*/
@Override
public String getEmptyValue() {
return (isBlankValuesAsNull() || isEmptyValuesAsNull()) ? null : "";
}
/*
* (non-Javadoc)
* @see com.vaadin.ui.AbstractTextField#setInternalValue(java.lang.String)
*/
@Override
protected void setInternalValue(String newValue) {
super.setInternalValue(sanitizeValue(newValue));
}
/**
* Checkup String value to apply empty-as-null or blank-as-null behaviours, if enabled.
* @param value Value to check
* @return Sanitized value
*/
protected String sanitizeValue(String value) {
if (value != null) {
if (isBlankValuesAsNull() && value.trim().equals("")) {
return null;
}
if (isEmptyValuesAsNull() && value.length() == 0) {
return null;
}
}
return value;
}
/*
* (non-Javadoc)
* @see com.holonplatform.vaadin.components.Input#addValueChangeListener(com.holonplatform.vaadin.components.Input.
* ValueChangeListener)
*/
@Override
public Registration addValueChangeListener(
com.holonplatform.vaadin7.components.Input.ValueChangeListener listener) {
return ValueChangeNotifierRegistration.adapt(this, this, listener);
}
// Builder
/**
* Builder to create {@link StringArea} instances.
*
* By default, this builder sets the empty String as null representation and null settings allowed to
* true. The internal field value is inited with null.
*
*/
public static class Builder extends AbstractStringFieldBuilder {
public Builder() {
super(new StringArea());
getInstance().setNullRepresentation("");
getInstance().setNullSettingAllowed(true);
getInstance().initWithNullValue();
}
/*
* (non-Javadoc)
* @see com.holonplatform.vaadin.internal.components.builders.AbstractComponentBuilder#builder()
*/
@Override
protected StringInputBuilder builder() {
return this;
}
/*
* (non-Javadoc)
* @see com.holonplatform.vaadin.components.builders.StringFieldBuilder#emptyValuesAsNull(boolean)
*/
@Override
public StringInputBuilder emptyValuesAsNull(boolean enable) {
getInstance().setEmptyValuesAsNull(enable);
return builder();
}
/*
* (non-Javadoc)
* @see com.holonplatform.vaadin.components.builders.StringFieldBuilder#blankValuesAsNull(boolean)
*/
@Override
public StringInputBuilder blankValuesAsNull(boolean enable) {
getInstance().setBlankValuesAsNull(enable);
return builder();
}
/*
* (non-Javadoc)
* @see
* com.holonplatform.vaadin.internal.components.builders.AbstractFieldBuilder#build(com.vaadin.ui.AbstractField)
*/
@Override
protected Input build(StringArea instance) {
return instance;
}
/*
* (non-Javadoc)
* @see com.holonplatform.vaadin.internal.components.builders.AbstractFieldBuilder#buildAsField(com.vaadin.ui.
* AbstractField)
*/
@Override
protected Field buildAsField(StringArea instance) {
return instance;
}
}
}
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