package org.kuali.student.lum.program.client.major.edit;

 import java.util.List;

 import org.kuali.student.common.assembly.data.Metadata;

 import org.kuali.student.common.assembly.data.QueryPath;

 import org.kuali.student.common.ui.client.configurable.mvc.Configurer;

 import org.kuali.student.common.ui.client.configurable.mvc.FieldDescriptor;

 import org.kuali.student.common.ui.client.configurable.mvc.sections.Section;

 import org.kuali.student.common.ui.client.configurable.mvc.sections.VerticalSection;

 import org.kuali.student.common.ui.client.configurable.mvc.views.VerticalSectionView;

 import org.kuali.student.common.ui.client.widgets.field.layout.element.MessageKeyInfo;

 import org.kuali.student.lum.common.client.configuration.AbstractSectionConfiguration;

 import org.kuali.student.lum.common.client.lo.LOBuilder;

 import org.kuali.student.lum.common.client.lo.LOBuilderBinding;

 import org.kuali.student.lum.common.client.lo.LOPicker;

 import org.kuali.student.lum.common.client.lo.OutlineNode;

 import org.kuali.student.lum.program.client.ProgramConstants;

 import org.kuali.student.lum.program.client.ProgramMsgConstants;

 import org.kuali.student.lum.program.client.ProgramSections;

 import com.google.gwt.event.logical.shared.ValueChangeEvent;

 import com.google.gwt.event.logical.shared.ValueChangeHandler;

 import com.google.gwt.user.client.ui.Widget;

 /**

  * @author Igor

  */

 public class LearningObjectivesEditConfiguration extends AbstractSectionConfiguration {

     public LearningObjectivesEditConfiguration(Configurer configurer) {

         this.setConfigurer(configurer);

         rootSection = new VerticalSectionView(ProgramSections.LEARNING_OBJECTIVES_EDIT, getLabel(ProgramMsgConstants.PROGRAM_MENU_SECTIONS_LEARNINGOBJECTIVES), ProgramConstants.PROGRAM_MODEL_ID);

     }

     @Override

     protected void buildLayout() {

         final VerticalSection section = new VerticalSection();

         QueryPath path = QueryPath.concat("", ProgramConstants.LEARNING_OBJECTIVES, "*", "loInfo", "desc");

         Metadata meta = configurer.getModelDefinition().getMetadata(path);

         LOBuilder loBuilder = new LOBuilder("type", "state", "course", "kuali.loRepository.key.singleUse", ProgramConstants.LEARNING_OBJECTIVES, meta);

         final FieldDescriptor fd = addField(section, ProgramConstants.LEARNING_OBJECTIVES,

                 null,

                 loBuilder,

                 "");

         loBuilder.addValueChangeHandler(new ValueChangeHandler<List<OutlineNode<LOPicker>>>() {

             @Override

             public void onValueChange(ValueChangeEvent<List<OutlineNode<LOPicker>>> event) {

                 section.setIsDirty(true);

                 fd.setDirty(true);

             }

         });

         // have to do this here, because decision on binding is done in ks-core,

         // and we obviously don't want ks-core referring to LOBuilder

         fd.setWidgetBinding(LOBuilderBinding.INSTANCE);

         section.addStyleName("KS-LUM-Section-Divider");

         rootSection.addSection(section);

     }

     public FieldDescriptor addField(Section section, String fieldKey, MessageKeyInfo messageKey, Widget widget, String parentPath) {

         QueryPath path = QueryPath.concat(parentPath, fieldKey);

         Metadata meta = configurer.getModelDefinition().getMetadata(path);

         FieldDescriptor fd = new FieldDescriptor(path.toString(), messageKey, meta);

         if (widget != null) {

             fd.setFieldWidget(widget);

         }

         section.addField(fd);

         return fd;

     }

 }