/**

  * 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.widgets.field.layout.layouts;

 import java.util.HashMap;

 import java.util.Map;

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

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

 import org.kuali.student.common.ui.client.widgets.field.layout.button.ButtonLayout;

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

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

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

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

 /**

  * A layout which lays out fields and other layouts vertically.  Fields and layouts added will appear

  * in the order they are added.  Validation will appear next to appropriate fields if hasValidation is true.

  * The title will appear above all elements and button layout below all elements.

  * 

  * @author Kuali Student Team

  *

  */

 public class VerticalFieldLayout extends FieldLayout {

     private Map<String, FlowPanel> fieldContainers = new HashMap<String, FlowPanel>();

     protected FlowPanel verticalLayout = new FlowPanel();

     private SpanPanel buttonArea = new SpanPanel();

     public VerticalFieldLayout() {

         super();

         hasValidation = true;

         init();

     }

     public VerticalFieldLayout(boolean hasValidation) {

         super();

         this.hasValidation = hasValidation;

         init();

     }

     public VerticalFieldLayout(SectionTitle title) {

         super();

         this.setLayoutTitle(title);

         this.hasValidation = true;

         init();

     }

     public VerticalFieldLayout(Widget titleWidget) {

         super();

         this.setTitleWidget(titleWidget);

         this.hasValidation = true;

         init();

     }

     public VerticalFieldLayout(SectionTitle title, boolean hasValidation) {

         super();

         this.setLayoutTitle(title);

         this.hasValidation = hasValidation;

         init();

     }

     private void init() {

         instructions.setVisible(false);

         this.add(verticalLayout);

         verticalLayout.add(instructions);

         verticalLayout.add(message);

         this.add(buttonArea);

         verticalLayout.setStyleName("ks-form-module");

     }

     @Override

     public void addFieldToLayout(FieldElement field) {

         FlowPanel fieldContainer = new FlowPanel();

         FlowPanel fieldLayout = new FlowPanel();

         fieldContainer.add(field);

         fieldLayout.add(fieldContainer);

         if (hasValidation) {

             ValidationMessagePanel validationPanel = new ValidationMessagePanel();

             fieldLayout.add(validationPanel);

             field.setValidationPanel(validationPanel);

             validationPanel.setStyleName("ks-form-module-validation-inline");

         }

         field.setParentPanel(fieldLayout);

         verticalLayout.add(fieldLayout);

         fieldContainers.put(field.getKey(), fieldLayout);

         fieldLayout.setStyleName("ks-form-module-group");

         fieldLayout.addStyleName("clearfix");

         //field.addStyleName("ks-form-module-single-line-margin");

         fieldContainer.setStyleName("ks-form-module-fields");

     }

     @Override

     public void addLayoutToLayout(FieldLayout layout) {

         verticalLayout.add(layout);

         layout.setParentLayout(this);

     }

     @Override

     public void addWidgetToLayout(Widget widget) {

         widget.addStyleName("ks-section-widget");

         verticalLayout.add(widget);

     }

     @Override

     public void removeWidgetFromLayout(Widget widget) {

         verticalLayout.remove(widget);

     }

     @Override

     public void removeFieldLayoutComponentFromLayout(FieldLayoutComponent component) {

         if (component instanceof FieldElement) {

             FlowPanel panel = fieldContainers.get(component.getKey());

             verticalLayout.remove(panel);

             fieldContainers.remove(component.getKey());

         } else if (component instanceof FieldLayout) {

             verticalLayout.remove((FieldLayout) component);

         }

     }

     @Override

     public void setLayoutTitle(SectionTitle layoutTitle) {

         if (this.layoutTitle != null) {

             verticalLayout.remove(this.layoutTitle);

         }

         if (layoutTitle != null) {

             this.layoutTitle = layoutTitle;

             verticalLayout.insert(layoutTitle, 0);

             layoutTitle.addStyleName("ks-layout-header");

         }

     }

     public void setTitleWidget(Widget layoutTitle) {

         if (this.layoutTitle != null) {

             verticalLayout.remove(this.layoutTitle);

         }

         verticalLayout.insert(layoutTitle, 0);

     }

     @Override

     public void addButtonLayoutToLayout(ButtonLayout buttonLayout) {

         buttonArea.add(buttonLayout);

     }

 }