/*
    * Copyright 2007 The Kuali Foundation Licensed under the Educational Community
    * License, Version 1.0 (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.opensource.org/licenses/ecl1.php 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.rice.krad.uif.component;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.krad.uif.UifConstants;
  import org.kuali.rice.krad.uif.view.View;
  import org.kuali.rice.krad.util.ObjectUtils;
  
  import java.io.Serializable;
  
  /**
   * Provides binding configuration for an DataBinding component (attribute or
   * collection)
   * 
   * <p>
   * From the binding configuration the binding path is determined (if not
   * manually set) and used to set the path in the UI or to get the value from the
   * model
   * </p>
   * 
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class BindingInfo extends ConfigurableBase implements Serializable {
      private static final long serialVersionUID = -7389398061672136091L;
  
      private boolean bindToForm;
      private boolean bindToMap;
  
      private String bindingName;
      private String bindByNamePrefix;
      private String bindingObjectPath;
  
      private String collectionPath;
  
      private String bindingPath;
  
      public BindingInfo() {
          super();
  
          bindToForm = false;
          bindToMap = false;
      }
  
      /**
       * Sets up some default binding properties based on the view configuration
       * and the component's property name
       * 
       * <p>
       * Sets the bindingName (if not set) to the given property name, and if the
       * binding object path has not been set uses the default binding object path
       * setup for the view
       * </p>
       * 
       * @param view
       *            - the view instance the component belongs to
       * @param propertyName
       *            - name of the property (relative to the parent object) the
       *            component binds to
       */
      public void setDefaults(View view, String propertyName) {
          if (StringUtils.isBlank(bindingName)) {
              bindingName = propertyName;
          }
  
          if (StringUtils.isBlank(bindingObjectPath)) {
              bindingObjectPath = view.getDefaultBindingObjectPath();
          }
      }
  
      /**
       * Path to the property on the model the component binds to. Uses standard
       * dot notation for nested properties. If the binding path was manually set
       * it will be returned as it is, otherwise the path will be formed by using
       * the binding object path and the bind prefix
       * 
       * <p>
       * e.g. Property name 'foo' on a model would have binding path "foo", while
       * property name 'name' of the nested model property 'account' would have
       * binding path "account.name"
       * </p>
       * 
       * @return String binding path
       */
      public String getBindingPath() {
          if (StringUtils.isNotBlank(bindingPath)) {
              return bindingPath;
          }
  
          String formedBindingPath = "";
  
         if (!bindToForm && StringUtils.isNotBlank(bindingObjectPath)) {
             formedBindingPath = bindingObjectPath;
         }
 
         if (StringUtils.isNotBlank(bindByNamePrefix)) {
             if (!bindByNamePrefix.startsWith("[") && StringUtils.isNotBlank(formedBindingPath)) {
                 formedBindingPath += ".";
             }
             formedBindingPath += bindByNamePrefix;
         }
 
         if (bindToMap) {
             formedBindingPath += "['" + bindingName + "']";
         } else {
             if (StringUtils.isNotBlank(formedBindingPath)) {
                 formedBindingPath += ".";
             }
             formedBindingPath += bindingName;
         }
 
         return formedBindingPath;
     }
 
     /**
      * Returns the binding prefix string that can be used to setup the binding
      * on <code>DataBinding</code> components that are children of the component
      * that contains the <code>BindingInfo</code>. The binding prefix is formed
      * like the binding path but without including the object path
      *
      * @return String binding prefix for nested components
      */
     public String getBindingPrefixForNested() {
         String bindingPrefix = "";
 
         if (StringUtils.isNotBlank(bindByNamePrefix)) {
             bindingPrefix = bindByNamePrefix;
         }
 
         if (bindToMap) {
             bindingPrefix += "['" + bindingName + "']";
         } else {
             if (StringUtils.isNotBlank(bindingPrefix)) {
                 bindingPrefix += ".";
             }
             bindingPrefix += bindingName;
         }
 
         return bindingPrefix;
     }
 
     /**
      * Returns the binding path that is formed by taking the binding configuration
      * of this <code>BindingInfo</code> instance with the given property path as the
      * binding name. This can be used to get the binding path when just a property
      * name is given that is assumed to be on the same parent object of the field with
      * the configured binding info
      *
      * <p>
      * Special check is done for org.kuali.rice.krad.uif.UifConstants#NO_BIND_ADJUST_PREFIX prefix
      * on the property name which indicates the property path is the full path and should
      * not be adjusted. Also, if the property is prefixed with
      * org.kuali.rice.krad.uif.UifConstants#DATA_OBJECT_BIND_ADJUST_PREFIX, this indicates we should only append the
      * binding object path
      * </p>
      *
      * @param propertyPath - path for property to return full binding path for
      * @return String full binding path
      */
     public String getPropertyAdjustedBindingPath(String propertyPath) {
         if (propertyPath.startsWith(UifConstants.NO_BIND_ADJUST_PREFIX)) {
             propertyPath = StringUtils.removeStart(propertyPath, UifConstants.NO_BIND_ADJUST_PREFIX);
             return propertyPath;
         }
 
         BindingInfo bindingInfoCopy = (BindingInfo) ObjectUtils.deepCopy(this);
 
         if (propertyPath.startsWith(UifConstants.DATA_OBJECT_BIND_ADJUST_PREFIX)) {
             bindingInfoCopy.setBindByNamePrefix("");
             propertyPath = StringUtils.removeStart(propertyPath, UifConstants.DATA_OBJECT_BIND_ADJUST_PREFIX);
         }
         bindingInfoCopy.setBindingName(propertyPath);
 
         return bindingInfoCopy.getBindingPath();
     }
 
     /**
      * Setter for the binding path. Can be left blank in which the path will be
      * determined from the binding configuration
      * 
      * @param bindingPath
      */
     public void setBindingPath(String bindingPath) {
         this.bindingPath = bindingPath;
     }
 
     /**
      * Indicates whether the component binds directly to the form (that is its
      * bindingName gives a property available through the form), or whether is
      * binds through a nested form object. If bindToForm is false, it is assumed
      * the component binds to the object given by the form property whose path
      * is configured by bindingObjectPath.
      * 
      * @return boolean true if component binds directly to form, false if it
      *         binds to a nested object
      */
     public boolean isBindToForm() {
         return this.bindToForm;
     }
 
     /**
      * Setter for the bind to form indicator
      * 
      * @param bindToForm
      */
     public void setBindToForm(boolean bindToForm) {
         this.bindToForm = bindToForm;
     }
 
     /**
      * Gives the name of the property that the component binds to. The name can
      * be nested but not the full path, just from the parent object or in the
      * case of binding directly to the form from the form object
      * 
      * <p>
      * If blank this will be set from the name field of the component
      * </p>
      * 
      * @return String name of the bind property
      */
     public String getBindingName() {
         return this.bindingName;
     }
 
     /**
      * Setter for the bind property name
      * 
      * @param bindingName
      */
     public void setBindingName(String bindingName) {
         this.bindingName = bindingName;
     }
 
     /**
      * Prefix that will be used to form the binding path from the component
      * name. Typically used for nested collection properties
      * 
      * @return String binding prefix
      */
     public String getBindByNamePrefix() {
         return this.bindByNamePrefix;
     }
 
     /**
      * Setter for the prefix to use for forming the binding path by name
      * 
      * @param bindByNamePrefix
      */
     public void setBindByNamePrefix(String bindByNamePrefix) {
         this.bindByNamePrefix = bindByNamePrefix;
     }
 
     /**
      * If field is part of a collection field, gives path to collection
      * 
      * <p>
      * This is used for metadata purposes when getting finding the attribute
      * definition from the dictionary and is not used in building the final
      * binding path
      * </p>
      * 
      * @return String path to collection
      */
     public String getCollectionPath() {
         return this.collectionPath;
     }
 
     /**
      * Setter for the field's collection path (if part of a collection)
      * 
      * @param collectionPath
      */
     public void setCollectionPath(String collectionPath) {
         this.collectionPath = collectionPath;
     }
 
     /**
      * For attribute fields that do not belong to the default form object (given
      * by the view), this field specifies the path to the object (on the form)
      * the attribute does belong to.
      * 
      * <p>
      * e.g. Say we have an attribute field with property name 'number', that
      * belongs to the object given by the 'account' property on the form. The
      * form object path would therefore be set to 'account'. If the property
      * belonged to the object given by the 'document.header' property of the
      * form, the binding object path would be set to 'document.header'. Note if
      * the binding object path is not set for an attribute field (or any
      * <code>DataBinding</code> component), the binding object path configured
      * on the <code>View</code> will be used (unless bindToForm is set to true,
      * where is assumed the property is directly available from the form).
      * </p>
      * 
      * @return String path to object from form
      */
     public String getBindingObjectPath() {
         return this.bindingObjectPath;
     }
 
     /**
      * Setter for the object path on the form
      * 
      * @param bindingObjectPath
      */
     public void setBindingObjectPath(String bindingObjectPath) {
         this.bindingObjectPath = bindingObjectPath;
     }
 
     /**
      * Indicates whether the parent object for the property that we are binding
      * to is a Map. If true the binding path will be adjusted to use the map key
      * syntax
      * 
      * @return boolean true if the property binds to a map, false if it does not
      */
     public boolean isBindToMap() {
         return this.bindToMap;
     }
 
     /**
      * Setter for the bind to map indicator
      * 
      * @param bindToMap
      */
     public void setBindToMap(boolean bindToMap) {
         this.bindToMap = bindToMap;
     }
 
 }