/**

  * 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

  * <p/>

  * http://www.osedu.org/licenses/ECL-2.0

  * <p/>

  * 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.

  * <p/>

  *

  */

 package org.kuali.student.common.ui.client.configurable.mvc.multiplicity;

 import java.util.List;

 import org.kuali.student.common.ui.client.application.Application;

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

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

 /**

  * A MultiplicityTable displays data in a GWT FlexTable, one cell per field defined, one row per iteration in the supplied data.

  * Data is displayed as defined in the MultiplicityConfiguration passed in the ctor

  * If concatenated fields have been defined the values will be concatenated (comma delimited)  and displayed in a single table cell

  *

  * Fields are included in the table based on the FieldDescriptors added to the configuration

  */

 public class MultiplicityTable extends FlexTable {

     private MultiplicityConfiguration config;

     private static final String STYLE_TABLE = "KS-MultiplicityTable";

     private static final String STYLE_TABLE_BORDER = "KS-MultiplicityTableBorder";

     private static final String STYLE_CELL = "KS-MultiplicityTableCell";

     private static final String STYLE_CELL_BORDER = "KS-MultiplicityTableCellBorder";

     private static final String STYLE_HEADER_CELL = "KS-MultiplicityTableHeaderCell";

     private static final String BLANK_STRING = " ";

     private int col = 0;

     protected int row = 0;

     private String parentPath;

     /**

      *

      * Creates an instance of a MultiplicityTable based on the options in the MultiplicityConfiguration

      *

      * @param config

      */

     public MultiplicityTable(MultiplicityConfiguration config) {

         this.config = config;

         setStyleName(STYLE_TABLE);

         if (config.getStyleType() == MultiplicityConfiguration.StyleType.BORDERED_TABLE){

              addStyleName(STYLE_TABLE_BORDER);

         }

     }

     public void initTable() {

         clear();

         while (getRowCount() > 0) {

             removeRow(0);

         }

         row = 0;

         col = 0;

     }

     public void buildHeaders() {

         if (config.isShowHeaders()) {

             //TODO should just be 1 row def for a table - throw exception if > 1?

             for (Integer row  : config.getFields().keySet()) {

                 List<MultiplicityFieldConfiguration> fieldConfigs = config.getFields().get(row);

                 for (MultiplicityFieldConfiguration fieldConfig : fieldConfigs) {

                     MessageKeyInfo info = fieldConfig.getMessageKeyInfo();

                     String title = Application.getApplicationContext().getUILabel(info.getGroup(), info.getType(), info.getState(), info.getId());

                     addHeaderCell(title);

                 }

             }

             nextRow();

         }

     }

     public void addHeaderCell(String fieldValue) {

         if (config.isShowHeaders()) {

             setCellText(row, col, fieldValue);

             getCellFormatter().addStyleName(row, col++, STYLE_HEADER_CELL);

         }

     }

     public void addNextCell(String fieldValue) {

         setCellText(row, col++, fieldValue);

     }

     private void setCellText(int row, int cell, String fieldValue) {

         setText(row, cell, fieldValue);

         getCellFormatter().addStyleName(row, cell, STYLE_CELL);

         if (config.getStyleType() == MultiplicityConfiguration.StyleType.BORDERED_TABLE) {

             getCellFormatter().addStyleName(row, cell, STYLE_CELL_BORDER);

         }

     }

     public void addEmptyCell() {

         addNextCell(BLANK_STRING);

     }

     public void nextRow() {

         row++;

         col = 0;

     }

     public MultiplicityConfiguration getConfig() {

         return config;

     }

     public void setConfig(MultiplicityConfiguration config) {

         this.config = config;

     }

     public String getParentPath() {

         return parentPath;

     }

     public void setParentPath(String parentPath) {

         this.parentPath = parentPath;

     }

 }