Ungettable.java

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 * The ObjectStyle Group Software License, Version 1.0
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 * and individual authors of the software.  All rights reserved.
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package org.objectstyle.wolips.bindings.api;

import java.util.List;
import java.util.Map;

import org.w3c.dom.Element;

public class Ungettable extends AbstractNamedValidation {

  protected final static String UNGETTABLE = "ungettable";

  protected Ungettable(Element element, ApiModel apiModel) {
    super(element, apiModel);
  }

  public static void addToWoWithBinding(Wo wo, Binding binding) {
    synchronized (wo.apiModel) {
      Element newValidationElement = wo.element.getOwnerDocument().createElement(Validation.VALIDATION);
      wo.element.appendChild(newValidationElement);
      newValidationElement.setAttribute(Validation.MESSAGE, "'" + binding.getName() + "' must be bound to a gettable value");
      Element newUngettableElement = wo.element.getOwnerDocument().createElement(UNGETTABLE);
      newValidationElement.appendChild(newUngettableElement);
      newUngettableElement.setAttribute(NAME, binding.getName());
    }
  }

  public static void removeFromWoWithBinding(Wo wo, Binding binding) {
    synchronized (wo.apiModel) {
      List<Validation> validations = wo.getValidations();
      for (int i = validations.size() - 1; i >= 0; i--) {
        Validation validation = validations.get(i);
        List<Ungettable> ungettables = validation.getUngettables();
        if (ungettables.size() == 1 && ungettables.get(0).isAffectedByBindingNamed(binding.getName())) {
          validation.removeChild(ungettables.get(0));
        }
      }
    }
  }

  public boolean evaluate(Map<String, String> bindings) {
    String bindingName = getName();
    String bindingValue = bindings.get(bindingName);
    boolean evaluation = (bindingValue != null && bindingValue.startsWith("\"") && !bindingValue.startsWith("\"~"));
    return evaluation;
  }
}