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/* AbstractSimpleDateTimeConstraint.java
Purpose:
Description:
History:
Tue Aug 13 17:14:58 CST 2019, Created by rudyhuang
Copyright (C) 2019 Potix Corporation. All Rights Reserved.
*/
package org.zkoss.zul;
import java.util.TimeZone;
import java.util.regex.Pattern;
import org.zkoss.util.TimeZones;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.UiException;
import org.zkoss.zk.ui.WrongValueException;
import org.zkoss.zul.mesg.MZul;
/**
* A skeleton of simple date/time constraint.
*
* @author rudyhuang
* @since 9.0.0
*/
public abstract class AbstractSimpleDateTimeConstraint> extends SimpleConstraint {
protected T _beg;
protected T _end;
protected TimeZone _tzone = TimeZones.getCurrent();
/** Constraints a constraint.
*
* @param flags a combination of {@link #NO_POSITIVE}, {@link #NO_NEGATIVE},
* {@link #NO_ZERO}, and so on.
*/
public AbstractSimpleDateTimeConstraint(int flags) {
super(flags);
fixConstraint();
}
/** Constraints a constraint.
*
* @param flags a combination of {@link #NO_POSITIVE}, {@link #NO_NEGATIVE},
* {@link #NO_ZERO}, and so on.
* @param errmsg the error message to display. Ignored if null or empty.
*/
public AbstractSimpleDateTimeConstraint(int flags, String errmsg) {
super(flags, errmsg);
fixConstraint();
}
/** Constructs a constraint combining regular expression.
*
* @param regex ignored if null or empty. Unlike constraint, the regex doesn't need to enclose with '/'.
* @param errmsg the error message to display. Ignored if null or empty.
* @deprecated As of release 8.0.1, replaced with {@link #AbstractSimpleDateTimeConstraint(int, Pattern, String)}
*/
@Deprecated
public AbstractSimpleDateTimeConstraint(String regex, String errmsg) {
super(regex, errmsg);
fixConstraint();
}
/** Constructs a regular-expression constraint.
*
* @param regex ignored if null or empty
* @param errmsg the error message to display. Ignored if null or empty.
*/
public AbstractSimpleDateTimeConstraint(Pattern regex, String errmsg) {
super(regex, errmsg);
fixConstraint();
}
/** Constructs a constraint combining regular expression.
*
* @param flags a combination of {@link #NO_POSITIVE}, {@link #NO_NEGATIVE},
* {@link #NO_ZERO}, and so on.
* @param regex ignored if null or empty. Unlike constraint, the regex doesn't need to enclose with '/'.
* @param errmsg the error message to display. Ignored if null or empty.
* @deprecated As of release 8.0.1, replaced with {@link #AbstractSimpleDateTimeConstraint(int, Pattern, String)}
*/
@Deprecated
public AbstractSimpleDateTimeConstraint(int flags, String regex, String errmsg) {
super(flags, regex, errmsg);
fixConstraint();
}
/** Constructs a constraint combining regular expression.
*
* @param flags a combination of {@link #NO_POSITIVE}, {@link #NO_NEGATIVE},
* {@link #NO_ZERO}, and so on.
* @param regex ignored if null or empty
* @param errmsg the error message to display. Ignored if null or empty.
*/
public AbstractSimpleDateTimeConstraint(int flags, Pattern regex, String errmsg) {
super(flags, regex, errmsg);
fixConstraint();
}
/** Constructs a constraint with a list of constraints separated by comma.
*
* @param constraint a list of constraints separated by comma.
* Example: "between 20071012 and 20071223", "before 20080103"
*/
public AbstractSimpleDateTimeConstraint(String constraint) {
super(constraint);
fixConstraint();
}
protected abstract void fixConstraint();
/** Returns the beginning date, or null if there is no constraint of
* the beginning date.
*/
public T getBeginDate() {
return _beg;
}
/** Returns the ending date, or null if there is no constraint of
* the ending date.
*/
public T getEndDate() {
return _end;
}
/**
* Sets time zone that this date constraint belongs to
*/
public void setTimeZone(TimeZone tzone) {
_tzone = tzone;
_finishParseCst = false;
}
@Override
protected int parseConstraint(String constraint) throws UiException {
if (constraint.startsWith("between")) {
final int j = constraint.indexOf("and", 7);
if (j < 0)
throw new UiException("Constraint syntax error: " + constraint);
_beg = parseFrom(constraint.substring(7, j));
_end = parseFrom(constraint.substring(j + 3));
if (_beg.compareTo(_end) > 0) {
final T d = _beg;
_beg = _end;
_end = d;
}
return 0;
} else if (constraint.startsWith("before") && !constraint.startsWith("before_")) {
_end = parseFrom(constraint.substring(6));
return 0;
} else if (constraint.startsWith("after") && !constraint.startsWith("after_")) {
_beg = parseFrom(constraint.substring(5));
return 0;
}
return super.parseConstraint(constraint);
}
protected abstract T parseFrom(String val) throws UiException;
@Override
public void validate(Component comp, Object value) throws WrongValueException {
super.validate(comp, value);
}
protected void validate0(Component comp, T value) throws WrongValueException {
if (_beg != null && _beg.compareTo(value) > 0) {
throw outOfRangeValue(comp);
}
if (_end != null && _end.compareTo(value) < 0) {
throw outOfRangeValue(comp);
}
}
private WrongValueException outOfRangeValue(Component comp) {
final String errmsg = getErrorMessage(comp);
if (errmsg != null)
return new WrongValueException(comp, errmsg);
final String s = _beg != null ? _end != null ? valueToString(comp, _beg) + " ~ " + valueToString(comp, _end)
: ">= " + valueToString(comp, _beg) : "<= " + valueToString(comp, _end);
return new WrongValueException(comp, MZul.OUT_OF_RANGE, s);
}
protected abstract String valueToString(Component comp, T value);
}
