package pl.horus.wf.web.commons.tag;

import java.io.IOException;

import javax.el.ELException;
import javax.el.ValueExpression;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.view.facelets.*;

import pl.horus.wf.web.commons.component.DynamicInclude;

public final class DynamicIncludeHandler extends ComponentHandler {

  public DynamicIncludeHandler(ComponentConfig config) {
    super(config);
  }

  public void onComponentCreated(FaceletContext ctx, UIComponent component, UIComponent parent) {
    DynamicInclude di = (DynamicInclude) component;
    di.setFaceletContext(ctx);
    TagAttribute[] vars = tag.getAttributes().getAll();
    for (TagAttribute var : vars) {
      String name = var.getQName();
      String value = var.getValue();
      final ValueExpression valueExpression =
          ctx.getExpressionFactory().createValueExpression(
              ctx.getFacesContext().getELContext(), value, Object.class);
      di.addValueExpression(name, valueExpression);
    }
  }

  public boolean apply(FaceletContext ctx, UIComponent parent, String name)
      throws IOException, FacesException, ELException {
    if (name == null) {
      this.nextHandler.apply(ctx, parent);
      return true;
    }
    return false;
  }

}