/**
    * Copyright 2010 The Kuali Foundation Licensed under the
    * Educational Community License, Version 2.0 (the "License"); you may
    * not use this file except in compliance with the License. You may
    * obtain a copy of the License at
    *
    * http://www.osedu.org/licenses/ECL-2.0
    *
    * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an "AS IS"
   * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
   * or implied. See the License for the specific language governing
   * permissions and limitations under the License.
   */
  
  package org.kuali.student.common.ui.client.configurable.mvc.binding;
  
  import java.util.Date;
  
  import org.kuali.student.common.ui.client.mvc.DataModel;
  import org.kuali.student.common.ui.client.widgets.KSCheckBox;
  import org.kuali.student.core.assembly.data.Data;
  import org.kuali.student.core.assembly.data.QueryPath;
  
  import com.google.gwt.core.client.GWT;
  import com.google.gwt.user.client.ui.HasValue;
  
  /**
   * Model widget binding for HasValue widgets.  HasValue widgets can return any object type, so the
   * to from translated is done with known/expected types for KS.
   * @author Kuali Student Team
   *
   */
  public class HasValueBinding extends ModelWidgetBindingSupport<HasValue> {
  
      public static HasValueBinding INSTANCE = new HasValueBinding();
  
      private HasValueBinding() {}
  
      @Override
      public void setModelValue(HasValue object, DataModel model, String path) {
          QueryPath qPath = QueryPath.parse(path);
          Object value = object.getValue();
          if (!nullsafeEquals(model.get(qPath), value)) {
              setDirtyFlag(model, qPath);
          }
          // TODO: Type checking to ensure that the value type of widget matches model defintion
          if (value instanceof String) {
              model.set(qPath, (String) value);
          } else if (value instanceof Character) {
              model.set(qPath, value.toString());
          } else if (value instanceof Integer) {
              model.set(qPath, (Integer) value);
          } else if (value instanceof Long) {
              model.set(qPath, (Long) value);
          } else if (value instanceof Float) {
              model.set(qPath, (Float) value);
          } else if (value instanceof Double) {
              model.set(qPath, (Double) value);
          } else if (value instanceof Byte) {
              model.set(qPath, ((Byte) value).intValue());
          } else if (value instanceof Boolean) {
              model.set(qPath, (Boolean) value);
          } else if (value instanceof Date) {
              model.set(qPath, (Date) value);
          } else if (value instanceof Data.Value){
          	model.set(qPath, (Data.Value) value);
          } else if (value == null){
          	String s = null;
          	model.set(qPath, s);
          }
  
      }
  
      @Override
      public void setWidgetValue(HasValue object, DataModel model, String path) {
          QueryPath qPath = QueryPath.parse(path);
          Object value = model.get(qPath);
  
          if (value != null && object != null) {
              object.setValue(value);
          } else if (object != null) {
              try {
              	if (object instanceof KSCheckBox) {
              		object.setValue(false);
              	} else {
              		object.setValue("");
              	}
              } catch (RuntimeException e) {
                  GWT.log("Warning: Ignoring error attempting to setValue for " + object.getClass().getName(), e);
              }
          }
      }
  
  }