Examples of org.zkoss.zul.Constraint

org.zkoss.zul.Constraint
A constraint. Instead of implementing this interface, you may use {@link SimpleConstraint} if applicable.
To have better responsiveness, you can handle all (or some) validation at the client by implementing an additional interface, {@link ClientConstraint}.
If you prefer to have a custom way to display the error message (other than the default error box). You can also implement {@link CustomConstraint}. Then, {@link CustomConstraint#showCustomError} is called instead ofshowing the default error box.
Since 5.0.0, {@link ClientConstraint} takes higher priorityif both implemented. @author tomyeh @see CustomConstraint @see ClientConstraint

                    _("Invaldid End Date. New End Date must be after current End Date "));
        }
    }


    public Constraint validateStartDate() {
        return new Constraint() {
            @Override
            public void validate(Component comp, Object value)
                    throws WrongValueException {
                validateStartDate(comp, value);
            }

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            row.appendChild(removeButton);
        }




    public Constraint checkConstraintFormatPrefix() {
        return new Constraint() {
            @Override
            public void validate(Component comp, Object value)
                    throws WrongValueException {


                Row row = (Row) comp.getParent();

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        }
        return null;
    }


    public Constraint checkConstraintNumberOfDigits() {
        return new Constraint() {


            @Override
            public void validate(Component comp, Object value)
                    throws WrongValueException {
                Row row = (Row) comp.getParent();

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            }


            public Constraint checkPropertyValue(
                    final ConnectorProperty property) {
                final String key = property.getKey();
                return new Constraint() {
                    @Override
                    public void validate(Component comp, Object value) {
                        if (key.equals(PredefinedConnectorProperties.ACTIVATED)) {
                            if (!((String) value).equalsIgnoreCase("Y")
                                    && !((String) value).equalsIgnoreCase("N")) {

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                }
            }
        }


        private Constraint getBudgetConstraintFor(final T line) {
            return new Constraint() {
                @Override
                public void validate(Component comp, Object value)
                        throws WrongValueException {
                    if (value == null) {
                        throw new WrongValueException(comp,

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            }
            return (Treeitem) cmp;
        }


        private Constraint getHoursConstraintFor(final T line) {
            return new Constraint() {
                @Override
                public void validate(Component comp, Object value)
                        throws WrongValueException {
                    if (!getHoursGroupHandler().isTotalHoursValid(line, ((Integer) value))) {
                        throw new WrongValueException(

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    public void updateLoadRatios() {
        searchResources("", getSelectedCriterions());
    }


    public Constraint  checkConstraintFilteringDate() {
        return new Constraint() {
            @Override
            public void validate(Component comp, Object value) throws WrongValueException {
                if (value == null) {
                    if (comp.getId().equals("startDateLoadRatiosDatebox")) {
                        throw new WrongValueException(comp,

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    /**
     * Operations to filter the machines by multiple filters
     */


    public Constraint checkConstraintFinishDate() {
        return new Constraint() {
            @Override
            public void validate(Component comp, Object value)
                    throws WrongValueException {
                Date finishDate = (Date) value;
                if ((finishDate != null)

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            }
        };
    }


    public Constraint checkConstraintStartDate() {
        return new Constraint() {
            @Override
            public void validate(Component comp, Object value)
                    throws WrongValueException {
                Date startDate = (Date) value;
                if ((startDate != null)

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    }


    /* Operations to the data validations */


    public Constraint validateWorkReportTypeName() {
        return new Constraint() {
            @Override
            public void validate(Component comp, Object value)
                    throws WrongValueException {
                try {
                    workReportTypeModel

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