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/* *************************************************************************
IT Mill Toolkit
Development of Browser User Interfaces Made Easy
Copyright (C) 2000-2006 IT Mill Ltd
*************************************************************************
This product is distributed under commercial license that can be found
from the product package on license/license.txt. Use of this product might
require purchasing a commercial license from IT Mill Ltd. For guidelines
on usage, see license/licensing-guidelines.html
*************************************************************************
For more information, contact:
IT Mill Ltd phone: +358 2 4802 7180
Ruukinkatu 2-4 fax: +358 2 4802 7181
20540, Turku email: info@itmill.com
Finland company www: www.itmill.com
Primary source for information and releases: www.itmill.com
********************************************************************** */
package com.itmill.toolkit.terminal;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
/** Class for combining multiple error messages together.
*
* @author IT Mill Ltd
* @version @VERSION@
* @since 3.0
*/
public class CompositeErrorMessage implements ErrorMessage {
/** Array of all the errors */
private List errors;
/** Level of the error */
private int level;
/** Constructor for CompositeErrorMessage.
*
* @param errorMessages Array of error messages that are listed togeter.
* Nulls are ignored, but at least one message is required.
* @throws NullPointerException if errorMessages is null.
* * @throws IllegalArgumentException if the array was empty.
*/
public CompositeErrorMessage(ErrorMessage[] errorMessages) {
errors = new ArrayList(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 Collection of error messages that are listed
* togeter. At least one message is required.
* @throws NullPointerException if the collection is null.
* @throws IllegalArgumentException if the collection was empty.
*/
public CompositeErrorMessage(Collection errorMessages) {
errors = new ArrayList(errorMessages.size());
level = Integer.MIN_VALUE;
for (Iterator i = errorMessages.iterator(); i.hasNext();) {
addErrorMessage((ErrorMessage) 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.itmill.toolkit.terminal.ErrorMessage#getErrorLevel()
*/
public final int getErrorLevel() {
return level;
}
/** Add 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)) {
this.errors.add(error);
int l = error.getErrorLevel();
if (l > level)
level = l;
}
}
/** Get Error Iterator. */
public Iterator iterator() {
return errors.iterator();
}
public void paint(PaintTarget target) throws PaintException {
if (errors.size() == 1)
((ErrorMessage) 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 (Iterator i = errors.iterator(); i.hasNext();) {
((ErrorMessage) 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.
*/
public String toString() {
String retval = "[";
int pos = 0;
for (Iterator i = errors.iterator(); i.hasNext();) {
if (pos > 0)
retval += ",";
pos++;
retval += i.next().toString();
}
retval += "]";
return retval;
}
}
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