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/*
* Copyright (C) 2000-2023 Vaadin Ltd
*
* This program is available under Vaadin Commercial License and Service Terms.
*
* See for the full
* license.
*/
package com.vaadin.ui;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Objects;
import java.util.StringTokenizer;
import org.jsoup.nodes.Attributes;
import org.jsoup.nodes.Element;
import com.vaadin.event.FieldEvents;
import com.vaadin.event.FieldEvents.BlurEvent;
import com.vaadin.event.FieldEvents.BlurListener;
import com.vaadin.event.FieldEvents.FocusAndBlurServerRpcDecorator;
import com.vaadin.event.FieldEvents.FocusEvent;
import com.vaadin.event.FieldEvents.FocusListener;
import com.vaadin.shared.MouseEventDetails;
import com.vaadin.shared.Registration;
import com.vaadin.shared.ui.ComponentStateUtil;
import com.vaadin.shared.ui.checkbox.CheckBoxServerRpc;
import com.vaadin.shared.ui.checkbox.CheckBoxState;
import com.vaadin.ui.declarative.DesignAttributeHandler;
import com.vaadin.ui.declarative.DesignContext;
public class CheckBox extends AbstractField
implements FieldEvents.BlurNotifier, FieldEvents.FocusNotifier {
private CheckBoxServerRpc rpc = (boolean checked,
MouseEventDetails mouseEventDetails) -> {
if (isReadOnly()) {
return;
}
/*
* Client side updates the state before sending the event so we need to
* make sure the cached state is updated to match the client. If we do
* not do this, a reverting setValue() call in a listener will not cause
* the new state to be sent to the client.
*
* See #11028, #10030.
*/
getUI().getConnectorTracker().getDiffState(CheckBox.this).put("checked",
checked);
final Boolean oldValue = getValue();
final Boolean newValue = checked;
if (!newValue.equals(oldValue)) {
// The event is only sent if the switch state is changed
setValue(newValue, true);
}
};
private CheckBoxInputElement checkBoxInputElement = null;
private CheckBoxLabelElement checkBoxLabelElement = null;
/**
* The inner input element of the CheckBox.
*/
public static class CheckBoxInputElement implements HasStyleNames {
private final CheckBox checkBox;
private CheckBoxInputElement(CheckBox checkBox) {
this.checkBox = checkBox;
}
@Override
// Implementation copied from AbstractComponent
public String getStyleName() {
// replaced String with StringBuilder
StringBuilder s = new StringBuilder();
if (ComponentStateUtil
.hasStyles(checkBox.getState(false).inputStyles)) {
for (final Iterator it = checkBox
.getState(false).inputStyles.iterator(); it
.hasNext();) {
s.append(it.next());
if (it.hasNext()) {
s.append(" ");
}
}
}
return s.toString();
}
@Override
// Implementation copied from AbstractComponent
public void setStyleName(String style) {
if (style == null || style.isEmpty()) {
checkBox.getState().inputStyles = null;
return;
}
if (checkBox.getState().inputStyles == null) {
checkBox.getState().inputStyles = new ArrayList<>();
}
List styles = checkBox.getState().inputStyles;
styles.clear();
StringTokenizer tokenizer = new StringTokenizer(style, " ");
while (tokenizer.hasMoreTokens()) {
styles.add(tokenizer.nextToken());
}
}
@Override
// Implementation copied from AbstractComponent
public void addStyleName(String style) {
if (style == null || style.isEmpty()) {
return;
}
if (checkBox.getState().inputStyles != null
&& checkBox.getState().inputStyles.contains(style)) {
return;
}
if (style.contains(" ")) {
// Split space separated style names and add them one by one.
StringTokenizer tokenizer = new StringTokenizer(style, " ");
while (tokenizer.hasMoreTokens()) {
addStyleName(tokenizer.nextToken());
}
return;
}
if (checkBox.getState().inputStyles == null) {
checkBox.getState().inputStyles = new ArrayList<>();
}
List styles = checkBox.getState().inputStyles;
styles.add(style);
}
@Override
// Implementation copied from AbstractComponent
public void removeStyleName(String style) {
if (ComponentStateUtil.hasStyles(checkBox.getState().inputStyles)) {
StringTokenizer tokenizer = new StringTokenizer(style, " ");
while (tokenizer.hasMoreTokens()) {
checkBox.getState().inputStyles
.remove(tokenizer.nextToken());
}
}
}
}
/**
* The inner label element of the CheckBox.
*/
public static class CheckBoxLabelElement implements HasStyleNames {
private final CheckBox checkBox;
private CheckBoxLabelElement(CheckBox checkBox) {
this.checkBox = checkBox;
}
@Override
// Implementation copied from AbstractComponent
public String getStyleName() {
// replaced String with StringBuilder
StringBuilder s = new StringBuilder();
if (ComponentStateUtil
.hasStyles(checkBox.getState(false).labelStyles)) {
for (final Iterator it = checkBox
.getState(false).labelStyles.iterator(); it
.hasNext();) {
s.append(it.next());
if (it.hasNext()) {
s.append(" ");
}
}
}
return s.toString();
}
@Override
// Implementation copied from AbstractComponent
public void setStyleName(String style) {
if (style == null || style.isEmpty()) {
checkBox.getState().labelStyles = null;
return;
}
if (checkBox.getState().labelStyles == null) {
checkBox.getState().labelStyles = new ArrayList<>();
}
List styles = checkBox.getState().labelStyles;
styles.clear();
StringTokenizer tokenizer = new StringTokenizer(style, " ");
while (tokenizer.hasMoreTokens()) {
styles.add(tokenizer.nextToken());
}
}
@Override
// Implementation copied from AbstractComponent
public void addStyleName(String style) {
if (style == null || style.isEmpty()) {
return;
}
if (checkBox.getState().labelStyles != null
&& checkBox.getState().labelStyles.contains(style)) {
return;
}
if (style.contains(" ")) {
// Split space separated style names and add them one by one.
StringTokenizer tokenizer = new StringTokenizer(style, " ");
while (tokenizer.hasMoreTokens()) {
addStyleName(tokenizer.nextToken());
}
return;
}
if (checkBox.getState().labelStyles == null) {
checkBox.getState().labelStyles = new ArrayList<>();
}
List styles = checkBox.getState().labelStyles;
styles.add(style);
}
@Override
// Implementation copied from AbstractComponent
public void removeStyleName(String style) {
if (ComponentStateUtil.hasStyles(checkBox.getState().labelStyles)) {
StringTokenizer tokenizer = new StringTokenizer(style, " ");
while (tokenizer.hasMoreTokens()) {
checkBox.getState().labelStyles
.remove(tokenizer.nextToken());
}
}
}
}
/**
* Creates a new checkbox.
*/
public CheckBox() {
registerRpc(rpc);
registerRpc(new FocusAndBlurServerRpcDecorator(this, this::fireEvent));
setValue(Boolean.FALSE);
}
/**
* Creates a new checkbox with a set caption.
*
* @param caption
* the Checkbox caption.
*/
public CheckBox(String caption) {
this();
setCaption(caption);
}
/**
* Creates a new checkbox with a caption and a set initial state.
*
* @param caption
* the caption of the checkbox
* @param initialState
* the initial state of the checkbox
*/
public CheckBox(String caption, boolean initialState) {
this(caption);
setValue(initialState);
}
@Override
public Boolean getValue() {
return getState(false).checked;
}
/**
* Sets the value of this CheckBox. If the new value is not equal to
* {@code getValue()}, fires a {@link ValueChangeEvent}. Throws
* {@code NullPointerException} if the value is null.
*
* @param value
* the new value, not {@code null}
* @throws NullPointerException
* if {@code value} is {@code null}
*/
@Override
public void setValue(Boolean value) {
Objects.requireNonNull(value, "CheckBox value must not be null");
super.setValue(value);
}
/**
* Sets the value of this CheckBox. If the new value is not equal to
* {@code getValue()}, fires a {@link ValueChangeEvent}. Throws
* {@code NullPointerException} if the value is null.
*
* @param value
* the new value, not {@code null}
* @param userOriginated
* {@code true} if this event originates from the client,
* {@code false} otherwise.
* @throws NullPointerException
* if {@code value} is {@code null}
*/
@Override
protected boolean setValue(Boolean value, boolean userOriginated) {
Objects.requireNonNull(value, "CheckBox value must not be null");
return super.setValue(value, userOriginated);
}
@Override
public Boolean getEmptyValue() {
return false;
}
@Override
protected CheckBoxState getState() {
return (CheckBoxState) super.getState();
}
@Override
protected CheckBoxState getState(boolean markAsDirty) {
return (CheckBoxState) super.getState(markAsDirty);
}
@Override
protected void doSetValue(Boolean value) {
getState().checked = value;
}
@Override
public Registration addBlurListener(BlurListener listener) {
return addListener(BlurEvent.EVENT_ID, BlurEvent.class, listener,
BlurListener.blurMethod);
}
@Override
public Registration addFocusListener(FocusListener listener) {
return addListener(FocusEvent.EVENT_ID, FocusEvent.class, listener,
FocusListener.focusMethod);
}
/*
* (non-Javadoc)
*
* @see com.vaadin.ui.AbstractField#readDesign(org.jsoup.nodes.Element,
* com.vaadin.ui.declarative.DesignContext)
*/
@Override
public void readDesign(Element design, DesignContext designContext) {
super.readDesign(design, designContext);
if (design.hasAttr("checked")) {
this.setValue(DesignAttributeHandler.readAttribute("checked",
design.attributes(), Boolean.class), false);
}
}
/*
* (non-Javadoc)
*
* @see com.vaadin.ui.AbstractField#getCustomAttributes()
*/
@Override
protected Collection getCustomAttributes() {
Collection attributes = super.getCustomAttributes();
attributes.add("checked");
return attributes;
}
/*
* (non-Javadoc)
*
* @see com.vaadin.ui.AbstractField#writeDesign(org.jsoup.nodes.Element,
* com.vaadin.ui.declarative.DesignContext)
*/
@Override
public void writeDesign(Element design, DesignContext designContext) {
super.writeDesign(design, designContext);
CheckBox def = designContext.getDefaultInstance(this);
Attributes attr = design.attributes();
DesignAttributeHandler.writeAttribute("checked", attr, getValue(),
def.getValue(), Boolean.class, designContext);
}
/**
* Returns the {@link CheckBoxInputElement} element to manipulate the style
* name of the {@code input} element of the {@link CheckBox}.
*
* @since 8.7
* @return the current {@link CheckBoxInputElement}, not {@code null}.
*/
public CheckBoxInputElement getInputElement() {
if (checkBoxInputElement == null) {
checkBoxInputElement = new CheckBoxInputElement(this);
}
return checkBoxInputElement;
}
/**
* Returns the {@link CheckBoxLabelElement} element to manipulate the style
* name of the {@code label} element of the {@link CheckBox}.
*
* @since 8.7
* @return the current {@link CheckBoxLabelElement}, not {@code null}.
*/
public CheckBoxLabelElement getLabelElement() {
if (checkBoxLabelElement == null) {
checkBoxLabelElement = new CheckBoxLabelElement(this);
}
return checkBoxLabelElement;
}
}
