/**

  * 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.search;

 import java.util.ArrayList;

 import java.util.List;

 import java.util.Set;

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

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

 import org.kuali.student.common.ui.client.service.CachingSearchService;

 import org.kuali.student.common.ui.client.service.SearchRpcServiceAsync;

 import org.kuali.student.common.ui.client.widgets.pagetable.GenericTableModel;

 import org.kuali.student.common.ui.client.widgets.pagetable.PagingScrollTableBuilder;

 import org.kuali.student.common.ui.client.widgets.searchtable.ResultRow;

 import org.kuali.student.common.ui.client.widgets.searchtable.SearchColumnDefinition;

 import org.kuali.student.core.assembly.data.LookupResultMetadata;

 import org.kuali.student.core.search.dto.SearchRequest;

 import org.kuali.student.core.search.dto.SearchResult;

 import org.kuali.student.core.search.dto.SearchResultCell;

 import org.kuali.student.core.search.dto.SearchResultRow;

 import com.google.gwt.core.client.GWT;

 import com.google.gwt.gen2.table.client.AbstractColumnDefinition;

 import com.google.gwt.gen2.table.client.PagingOptions;

 import com.google.gwt.gen2.table.client.PagingScrollTable;

 import com.google.gwt.gen2.table.client.AbstractScrollTable.ResizePolicy;

 import com.google.gwt.gen2.table.event.client.RowSelectionHandler;

 import com.google.gwt.user.client.Window;

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

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

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

 public class TempSearchBackedTable extends Composite{

     private List<ResultRow> resultRows = new ArrayList<ResultRow>();

     private List<AbstractColumnDefinition<ResultRow, ?>> columnDefs = new ArrayList<AbstractColumnDefinition<ResultRow, ?>>();

     private GenericTableModel<ResultRow> tableModel = new GenericTableModel<ResultRow>(resultRows);

     private PagingScrollTableBuilder<ResultRow> builder = new PagingScrollTableBuilder<ResultRow>();

     private String resultIdColumnKey;

     protected PagingScrollTable<ResultRow> pagingScrollTable;

     private VerticalPanel layout = new VerticalPanel();

     private PagingOptions pagingOptions;

     private SearchRpcServiceAsync searchRpcServiceAsync = CachingSearchService.getSearchService();

     private PagingOptions createPagingOptions(PagingScrollTable<ResultRow> pagingScrollTable) {

         PagingOptions pagingOptions = new PagingOptions(pagingScrollTable);

         pagingOptions.setPixelSize(pagingScrollTable.getOffsetWidth(), pagingOptions.getOffsetHeight());

         return pagingOptions;

     }

     public TempSearchBackedTable(){

         super();

         redraw();

         layout.setWidth("100%");

         initWidget(layout);

     }

     public void clearTable(){

         resultRows.clear();

         this.redraw();

     }

     public void removeSelected(){

         for(ResultRow r: getSelectedRows()){

             resultRows.remove(r);

         }

         this.redraw();

     }

     public void performSearch(SearchRequest searchRequest, List<LookupResultMetadata> listResultMetadata, String resultIdKey){

             initializeTable(listResultMetadata, resultIdKey);

             searchRequest.setNeededTotalResults(false);

         if(pagingScrollTable != null){

             pagingScrollTable.setEmptyTableWidget(new Label("Processing Search..."));

         }

                 searchRpcServiceAsync.search(searchRequest, new KSAsyncCallback<SearchResult>(){

                     @Override

                     public void handleFailure(Throwable cause) {

                             GWT.log("Failed to perform search", cause); //FIXME more detail info here

                             Window.alert("Failed to perform search");

                     }

                     @Override

                     public void onSuccess(SearchResult results) {

                             resultRows.clear();

                         if(results != null){

                             for (SearchResultRow r: results.getRows()){

                                 ResultRow theRow = new ResultRow();

                                 for(SearchResultCell c: r.getCells()){

                                     if(c.getKey().equals(resultIdColumnKey)){

                                         theRow.setId(c.getValue());

                                     }

                                     theRow.setValue(c.getKey(), c.getValue());

                                 }

                                 resultRows.add(theRow);

                             }

                         }

                         redraw();

                     }

                 });

     }

     public void initializeTable(List<LookupResultMetadata> listResultMetadata, String resultIdKey) {

             clearTable();

         this.resultIdColumnKey = resultIdKey;

         builder = new PagingScrollTableBuilder<ResultRow>();

         builder.tablePixelSize(400, 300);

         columnDefs = new ArrayList<AbstractColumnDefinition<ResultRow, ?>>();

         for (LookupResultMetadata r: listResultMetadata){

             String header = Application.getApplicationContext().getUILabel("", null, null, r.getName());

             String key = r.getKey();

             if(!r.isHidden()){

                 columnDefs.add(new SearchColumnDefinition(header, key));

             }

         }

         if(columnDefs.size() == 1){

             //FIXME auto adjusting width to fill table does not work with 1 column bug in incubator???

             columnDefs.get(0).setMinimumColumnWidth(370);

         }

         builder.columnDefinitions(columnDefs);

         tableModel.setColumnDefs(columnDefs);

         redraw();

     }

     public void redraw(){

         tableModel.setRows(resultRows);

         pagingScrollTable = builder.build(tableModel); // FIXME do we really need to recreate the table for every refresh?

         pagingScrollTable.setResizePolicy(ResizePolicy.FILL_WIDTH);

         pagingOptions = createPagingOptions(pagingScrollTable);

         layout.clear();

         layout.add(pagingOptions);

         layout.add(pagingScrollTable);

         pagingScrollTable.reloadPage();                //FIXME Undesirable solution to work with GWT 2.0

         pagingScrollTable.fillWidth();

     }

     public void addSelectionHandler(RowSelectionHandler selectionHandler){

         pagingScrollTable.getDataTable().addRowSelectionHandler(selectionHandler);

     }

     public List<ResultRow> getSelectedRows(){

         List<ResultRow> rows = new ArrayList<ResultRow>();

         Set<Integer> selectedRows = pagingScrollTable.getDataTable().getSelectedRows();

         for(Integer i: selectedRows){

             rows.add(pagingScrollTable.getRowValue(i));

         }

         return rows;

     }

     public List<String> getSelectedIds(){

         List<String> ids = new ArrayList<String>();

         Set<Integer> selectedRows = pagingScrollTable.getDataTable().getSelectedRows();

         for(Integer i: selectedRows){

             ids.add(pagingScrollTable.getRowValue(i).getId());

         }

         return ids;

     }

     public List<String> getAllIds(){

         List<String> ids = new ArrayList<String>();

         for(ResultRow r: resultRows){

             ids.add(r.getId());

         }

         return ids;

     }

     public List<ResultRow> getAllRows(){

         List<ResultRow> rows = new ArrayList<ResultRow>();

         for(ResultRow r: resultRows){

             rows.add(r);

         }

         return rows;

     }

 }