/**
    * Copyright 2005-2013 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.opensource.org/licenses/ecl2.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.field;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.api.exception.RiceRuntimeException;
  import org.kuali.rice.krad.datadictionary.parse.BeanTag;
  import org.kuali.rice.krad.datadictionary.parse.BeanTagAttribute;
  import org.kuali.rice.krad.datadictionary.parse.BeanTags;
  import org.kuali.rice.krad.uif.UifConstants.Position;
  import org.kuali.rice.krad.uif.component.ComponentSecurity;
  import org.kuali.rice.krad.uif.element.Label;
  import org.kuali.rice.krad.uif.util.MessageStructureUtils;
  import org.kuali.rice.krad.uif.view.View;
  import org.kuali.rice.krad.uif.component.Component;
  import org.kuali.rice.krad.uif.component.ComponentBase;
  import org.kuali.rice.krad.uif.util.ComponentFactory;
  
  import java.util.List;
  
  /**
   * Base class for <code>Field</code> implementations
   *
   * <p>
   * Sets the component type name so that all field templates have a fixed
   * contract
   * </p>
   *
   * <p>
   * Holds a nested <code>Label</code> with configuration for rendering the
   * label and configuration on label placement.
   * </p>
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  @BeanTags({@BeanTag(name = "fieldBase-bean", parent = "Uif-FieldBase"),
      @BeanTag(name = "fieldBase-withLabel-bean", parent = "Uif-FieldBase-withLabel")})
  public class FieldBase extends ComponentBase implements Field {
      private static final long serialVersionUID = -5888414844802862760L;
  
      private String shortLabel;
      private Label fieldLabel;
  
      private Position labelPlacement;
  
      private boolean labelRendered;
  
      public FieldBase() {
          labelRendered = false;
          labelPlacement = Position.LEFT;
      }
  
      /**
       * The following initialization is performed:
       *
       * <ul>
       * </ul>
       *
       * @see org.kuali.rice.krad.uif.component.ComponentBase#performInitialization(org.kuali.rice.krad.uif.view.View, java.lang.Object)
       */
      @Override
      public void performInitialization(View view, Object model) {
          super.performInitialization(view, model);
      }
  
      /**
       * The following finalization is performed:
       *
       * <ul>
       * <li>Set the labelForComponentId to this component id</li>
       * <li>Set the label text on the label field from the field's label property
       * </li>
       * <li>Set the render property on the label's required message field if this
       * field is marked as required</li>
       * <li>If label placement is right, set render colon to false</li>
       * </ul>
       *
       * @see org.kuali.rice.krad.uif.component.ComponentBase#performFinalize(org.kuali.rice.krad.uif.view.View,
       *      java.lang.Object, org.kuali.rice.krad.uif.component.Component)
       */
      @Override
      public void performFinalize(View view, Object model, Component parent) {
          super.performFinalize(view, model, parent);
  
          if (fieldLabel != null) {
              fieldLabel.setLabelForComponentId(this.getId());
 
             if ((getRequired() != null) && getRequired().booleanValue()) {
                 fieldLabel.getRequiredMessage().setRender(!isReadOnly());
             } else {
                 setRequired(new Boolean(false));
                 fieldLabel.getRequiredMessage().setRender(true);
 
                 String prefixStyle = "";
                 if (StringUtils.isNotBlank(fieldLabel.getRequiredMessage().getStyle())) {
                     prefixStyle = fieldLabel.getRequiredMessage().getStyle();
                 }
                 fieldLabel.getRequiredMessage().setStyle(prefixStyle + ";" + "display: none;");
             }
 
             if (labelPlacement.equals(Position.RIGHT)) {
                 fieldLabel.setRenderColon(false);
             }
 
             if (labelPlacement.equals(Position.TOP) || labelPlacement.equals(Position.BOTTOM)){
                 fieldLabel.addStyleClass("uif-labelBlock");
             }
 
             fieldLabel.addDataAttribute("labelFor", this.getId());
             if(StringUtils.isNotBlank(this.getFieldLabel().getLabelText())){
                 this.addDataAttribute("label",
                         MessageStructureUtils.translateStringMessage(this.getFieldLabel().getLabelText()));
             }
         }
     }
 
     /**
      * Helper method for suffixing the ids of the fields nested components
      *
      * @param component - component to adjust id for
      * @param suffix - suffix to append to id
      */
     protected void setNestedComponentIdAndSuffix(Component component, String suffix) {
         if (component != null) {
             String fieldId = getId();
             fieldId += suffix;
 
             component.setId(fieldId);
         }
     }
 
     /**
      * @see org.kuali.rice.krad.uif.component.Component#getComponentTypeName()
      */
     @Override
     public final String getComponentTypeName() {
         return "field";
     }
 
     /**
      * @see org.kuali.rice.krad.uif.component.ComponentBase#getComponentsForLifecycle()
      */
     @Override
     public List<Component> getComponentsForLifecycle() {
         List<Component> components = super.getComponentsForLifecycle();
 
         components.add(fieldLabel);
 
         return components;
     }
 
     /**
      * @see org.kuali.rice.krad.uif.field.Field#getLabel
      */
     @BeanTagAttribute(name = "label")
     public String getLabel() {
         if (fieldLabel != null) {
             return fieldLabel.getLabelText();
         }
 
         return null;
     }
 
     /**
      * @see org.kuali.rice.krad.uif.field.Field#setFieldLabel(java.lang.String)
      */
     public void setLabel(String labelText) {
         if (StringUtils.isNotBlank(labelText) && this.fieldLabel == null) {
             this.fieldLabel = ComponentFactory.getLabel();
         }
 
         if (this.fieldLabel != null) {
             this.fieldLabel.setLabelText(labelText);
         }
     }
 
     /**
      * @see org.kuali.rice.krad.uif.field.Field#getLabelStyleClasses
      */
     @BeanTagAttribute(name="labelStyleClasses",type= BeanTagAttribute.AttributeType.LISTVALUE)
     public List<String> getLabelStyleClasses() {
         if (fieldLabel != null) {
             return fieldLabel.getCssClasses();
         }
 
         return null;
     }
 
     /**
      * @see org.kuali.rice.krad.uif.field.Field#setLabelStyleClasses
      */
     public void setLabelStyleClasses(List<String> labelStyleClasses) {
         if (labelStyleClasses != null && this.fieldLabel == null) {
             this.fieldLabel = ComponentFactory.getLabel();
         }
 
         if (this.fieldLabel != null) {
             this.fieldLabel.setCssClasses(labelStyleClasses);
         }
     }
 
     /**
      * @see org.kuali.rice.krad.uif.field.Field#getLabelColSpan
      */
     @BeanTagAttribute(name="labelColSpan")
     public int getLabelColSpan() {
         if (fieldLabel != null) {
             return fieldLabel.getColSpan();
         }
 
         return 1;
     }
 
     /**
      * @see org.kuali.rice.krad.uif.field.Field#setLabelColSpan
      */
     public void setLabelColSpan(int labelColSpan) {
         if (this.fieldLabel == null) {
             this.fieldLabel = ComponentFactory.getLabel();
         }
 
         if (this.fieldLabel != null) {
             this.fieldLabel.setColSpan(labelColSpan);
         }
     }
 
     /**
      * @see org.kuali.rice.krad.uif.field.Field#getShortLabel()
      */
     @BeanTagAttribute(name="shortLabel")
     public String getShortLabel() {
         return this.shortLabel;
     }
 
     /**
      * @see org.kuali.rice.krad.uif.field.Field#setShortLabel(java.lang.String)
      */
     public void setShortLabel(String shortLabel) {
         this.shortLabel = shortLabel;
     }
 
     /**
      * Sets whether the label should be displayed
      *
      * <p>
      * Convenience method for configuration that sets the render indicator on
      * the fields <code>Label</code> instance
      * </p>
      *
      * @param showLabel boolean true if label should be displayed, false if the label
      * should not be displayed
      */
     public void setShowLabel(boolean showLabel) {
         if (fieldLabel != null) {
             fieldLabel.setRender(showLabel);
         }
     }
 
     /**
      * @see org.kuali.rice.krad.uif.field.Field#getLabel
      */
     @BeanTagAttribute(name="fieldLabel",type= BeanTagAttribute.AttributeType.SINGLEBEAN)
     public Label getFieldLabel() {
         return this.fieldLabel;
     }
 
     /**
      * @see org.kuali.rice.krad.uif.field.Field#setFieldLabel
      */
     public void setFieldLabel(Label fieldLabel) {
         this.fieldLabel = fieldLabel;
     }
 
     /**
      * Indicates where the label is placed in relation to the field (valid options are
      * LEFT, RIGHT, BOTTOM, and TOP
      *
      * @return Position position of label
      */
     @BeanTagAttribute(name="labelPlacement",type= BeanTagAttribute.AttributeType.SINGLEBEAN)
     public Position getLabelPlacement() {
         return this.labelPlacement;
     }
 
     /**
      * Setter for the label's position in relation to the field (control if editable)
      *
      * @param labelPlacement
      */
     public void setLabelPlacement(Position labelPlacement) {
         this.labelPlacement = labelPlacement;
     }
 
     /**
      * @see org.kuali.rice.krad.uif.field.Field#isLabelRendered()
      */
     @BeanTagAttribute(name="labelRendered")
     public boolean isLabelRendered() {
         return this.labelRendered;
     }
 
     /**
      * @see org.kuali.rice.krad.uif.field.Field#setLabelRendered(boolean)
      */
     public void setLabelRendered(boolean labelRendered) {
         this.labelRendered = labelRendered;
     }
     
     /**
      * @see org.kuali.rice.krad.uif.field.Field#getFieldSecurity()
      */
     public FieldSecurity getFieldSecurity() {
         return (FieldSecurity) super.getComponentSecurity();
     }
 
     /**
      * Override to assert a {@link FieldSecurity} instance is set
      *
      * @param componentSecurity - instance of FieldSecurity
      */
     @Override
     public void setComponentSecurity(ComponentSecurity componentSecurity) {
         if (!(componentSecurity instanceof FieldSecurity)) {
             throw new RiceRuntimeException("Component security for Field should be instance of FieldSecurity");
         }
 
         super.setComponentSecurity(componentSecurity);
     }
 
     /**
      * @see org.kuali.rice.krad.uif.component.ComponentBase#getComponentSecurityClass()
      */
     @Override
     protected Class<? extends ComponentSecurity> getComponentSecurityClass() {
         return FieldSecurity.class;
     }
 }