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/*
@VaadinApache2LicenseForJavaFiles@
*/
package com.vaadin.terminal;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
/**
* Class for combining multiple error messages together.
*
* @author Vaadin Ltd
* @version
* @VERSION@
* @since 3.0
*/
@SuppressWarnings("serial")
public class CompositeErrorMessage implements ErrorMessage, Serializable {
/**
* Array of all the errors.
*/
private final List<ErrorMessage> errors;
/**
* Level of the error.
*/
private int level;
/**
* Constructor for CompositeErrorMessage.
*
* @param errorMessages
* the Array of error messages that are listed togeter. Nulls are
* ignored, but at least one message is required.
*/
public CompositeErrorMessage(ErrorMessage[] errorMessages) {
errors = new ArrayList<ErrorMessage>(errorMessages.length);
level = Integer.MIN_VALUE;
for (int i = 0; i < errorMessages.length; i++) {
addErrorMessage(errorMessages[i]);
}
if (errors.size() == 0) {
throw new IllegalArgumentException(
"Composite error message must have at least one error");
}
}
/**
* Constructor for CompositeErrorMessage.
*
* @param errorMessages
* the Collection of error messages that are listed together. At
* least one message is required.
*/
public CompositeErrorMessage(
Collection<? extends ErrorMessage> errorMessages) {
errors = new ArrayList<ErrorMessage>(errorMessages.size());
level = Integer.MIN_VALUE;
for (final Iterator<? extends ErrorMessage> i = errorMessages
.iterator(); i.hasNext();) {
addErrorMessage(i.next());
}
if (errors.size() == 0) {
throw new IllegalArgumentException(
"Composite error message must have at least one error");
}
}
/**
* The error level is the largest error level in
*
* @see com.vaadin.terminal.ErrorMessage#getErrorLevel()
*/
public final int getErrorLevel() {
return level;
}
/**
* Adds a error message into this composite message. Updates the level
* field.
*
* @param error
* the error message to be added. Duplicate errors are ignored.
*/
private void addErrorMessage(ErrorMessage error) {
if (error != null && !errors.contains(error)) {
errors.add(error);
final int l = error.getErrorLevel();
if (l > level) {
level = l;
}
}
}
/**
* Gets Error Iterator.
*
* @return the error iterator.
*/
public Iterator<ErrorMessage> iterator() {
return errors.iterator();
}
/**
* @see com.vaadin.terminal.Paintable#paint(com.vaadin.terminal.PaintTarget)
*/
public void paint(PaintTarget target) throws PaintException {
if (errors.size() == 1) {
(errors.iterator().next()).paint(target);
} else {
target.startTag("error");
if (level > 0 && level <= ErrorMessage.INFORMATION) {
target.addAttribute("level", "info");
} else if (level <= ErrorMessage.WARNING) {
target.addAttribute("level", "warning");
} else if (level <= ErrorMessage.ERROR) {
target.addAttribute("level", "error");
} else if (level <= ErrorMessage.CRITICAL) {
target.addAttribute("level", "critical");
} else {
target.addAttribute("level", "system");
}
// Paint all the exceptions
for (final Iterator<ErrorMessage> i = errors.iterator(); i
.hasNext();) {
i.next().paint(target);
}
target.endTag("error");
}
}
/* Documented in super interface */
public void addListener(RepaintRequestListener listener) {
}
/* Documented in super interface */
public void removeListener(RepaintRequestListener listener) {
}
/* Documented in super interface */
public void requestRepaint() {
}
/* Documented in super interface */
public void requestRepaintRequests() {
}
/**
* Returns a comma separated list of the error messages.
*
* @return String, comma separated list of error messages.
*/
@Override
public String toString() {
String retval = "[";
int pos = 0;
for (final Iterator<ErrorMessage> i = errors.iterator(); i.hasNext();) {
if (pos > 0) {
retval += ",";
}
pos++;
retval += i.next().toString();
}
retval += "]";
return retval;
}
public String getDebugId() {
return null;
}
public void setDebugId(String id) {
throw new UnsupportedOperationException(
"Setting testing id for this Paintable is not implemented");
}
}
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