Example usage for com.jgoodies.validation Validator validate

Introduction

In this page you can find the example usage for com.jgoodies.validation Validator validate.

Prototype

ValidationResult validate(T validationTarget);

Source Link

Document

Validates the given validation target and returns the validation result as an instance of ValidationResult .

Usage

From source file:org.metawidget.swing.widgetprocessor.validator.jgoodies.JGoodiesValidatorProcessor.java

License:LGPL

/**
 * Execute the given Validator against the given JComponent.
 *//*from  ww  w  .j ava  2  s . co  m*/

protected void validateChange(final JComponent component, final Validator<?> validator, String path,
        final SwingMetawidget metawidget) {

    final String[] names = PathUtils.parsePath(path).getNamesAsArray();

    // JGoodies' API concentrates on bulk updates of sub-components in a component tree.
    // For example the <code>ValidationComponentUtils.updateComponentTreeXXX</code> and
    // <code>ValidationComponentUtils.visitComponentTree</code> methods take a top-level
    // component and traverse it setting all validation messages for all sub-components.
    //
    // Because of this, when updating it is important to retain previous validation
    // results, or their messages will be lost during the bulk update of new validation
    // results

    @SuppressWarnings("unchecked")
    Map<JComponent, ValidationResult> validationResults = (Map<JComponent, ValidationResult>) metawidget
            .getClientProperty(JGoodiesValidatorProcessor.class);

    if (validationResults == null) {
        validationResults = CollectionUtils.newHashMap();
        metawidget.putClientProperty(JGoodiesValidatorProcessor.class, validationResults);
    }

    // Fetch the value...

    Object value = metawidget.getValue(names);

    // ...run it through the Validator...

    if (validator != null) {
        @SuppressWarnings("unchecked")
        Validator<Object> objectValidator = (Validator<Object>) validator;
        ValidationResult validationResult = objectValidator.validate(value);

        if (validationResult == null) {
            validationResults.remove(component);
        } else {
            validationResults.put(component, validationResult);
        }
    }

    // ...collate all ValidationResults...

    ValidationResult validationResult = new ValidationResult();
    for (ValidationResult previousValidationResult : validationResults.values()) {
        validationResult.addAllFrom(previousValidationResult);
    }

    // ...and update the UI

    updateComponent(component, validationResult, metawidget);
}

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