Package org.drools.guvnor.client.rulelist

Source Code of org.drools.guvnor.client.rulelist.QuickFindWidget

/*
* Copyright 2005 JBoss Inc
*
* Licensed under the Apache 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.apache.org/licenses/LICENSE-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.drools.guvnor.client.rulelist;

import java.util.ArrayList;
import java.util.List;

import org.drools.guvnor.client.common.FormStyleLayout;
import org.drools.guvnor.client.common.GenericCallback;
import org.drools.guvnor.client.common.PrettyFormLayout;
import org.drools.guvnor.client.messages.Constants;
import org.drools.guvnor.client.resources.Images;
import org.drools.guvnor.client.rpc.RepositoryServiceFactory;
import org.drools.guvnor.client.rpc.TableDataResult;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyUpEvent;
import com.google.gwt.event.dom.client.KeyUpHandler;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.CheckBox;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.user.client.ui.SuggestBox;
import com.google.gwt.user.client.ui.SuggestOracle;
import com.google.gwt.user.client.ui.SuggestOracle.Callback;
import com.google.gwt.user.client.ui.SuggestOracle.Request;
import com.gwtext.client.util.Format;
import com.google.gwt.user.client.ui.SuggestOracle.Suggestion;
import com.google.gwt.user.client.Command;
import com.google.gwt.core.client.GWT;

/**
* This is for quickly finding an asset by name. Partial completion is allowed.
* This also uses some auto completion magic.
* @author Michael Neale
*/
public class QuickFindWidget extends Composite {

    private Constants             constants = GWT.create( Constants.class );
    private static Images         images    = GWT.create( Images.class );

    private final OpenItemCommand editEvent;

    private SuggestBox            searchBox;
    private CheckBox              archiveBox;

    public QuickFindWidget(OpenItemCommand editEvent) {
        this.editEvent = editEvent;

        FormStyleLayout layout = new FormStyleLayout(images.systemSearch(),
                "");

        searchBox = new SuggestBox( new SuggestOracle() {
            public void requestSuggestions(Request r,
                                           Callback cb) {
                loadShortList( r.getQuery(),
                               r,
                               cb );

            }
        } );

        final SimplePanel resultsP = new SimplePanel();

        HorizontalPanel srch = new HorizontalPanel();
        final ClickHandler cl = new ClickHandler() {
            public void onClick(ClickEvent event) {
                resultsP.clear();
                AssetItemGrid grid = new AssetItemGrid(QuickFindWidget.this.editEvent,
                                                        "searchresults",
                                                        new AssetItemGridDataLoader() { //NON-NLS
                                                            public void loadData(int startRow,
                                                                                 int numberOfRows,
                                                                                 GenericCallback<TableDataResult> cb) {
                                                                RepositoryServiceFactory.getService().quickFindAsset( searchBox.getText(),
                                                                                                                      archiveBox.getValue(),
                                                                                                                      startRow,
                                                                                                                      numberOfRows,
                                                                                                                      cb );
                                                            }
                                                        } );
                resultsP.add( grid );

            }
        };

        searchBox.addKeyUpHandler( new KeyUpHandler() {
            public void onKeyUp(KeyUpEvent event) {
                if ( event.getNativeKeyCode() == KeyCodes.KEY_ENTER ) {
                    cl.onClick( null );
                }
            }
        } );
        srch.add( searchBox );
        layout.addAttribute( constants.FindItemsWithANameMatching(),
                             srch );

        archiveBox = new CheckBox();
        archiveBox.setValue( false );
        layout.addAttribute( constants.IncludeArchivedAssetsInResults(),
                             archiveBox );

        Button go = new Button( constants.Search() );
        go.addClickHandler( cl );
        layout.addAttribute( "",
                             go );

        FlexTable listPanel = new FlexTable();
        listPanel.setWidget( 0,
                             0,
                             new HTML( Format.format( "<img src='{0}'/>&nbsp;{1}",
                                                      images.information().getURL(),
                                                      constants.EnterSearchString()

                             ) ) ); //NON-NLS

        PrettyFormLayout pfl = new PrettyFormLayout();
        pfl.startSection();
        pfl.addRow(listPanel);
        pfl.addRow( resultsP );

        pfl.endSection();
        layout.addRow( pfl );

        initWidget(layout);
    }

    /**
     * This will load a list of items as they are typing.
     */
    protected void loadShortList(String match,
                                 final Request r,
                                 final Callback cb) {
        RepositoryServiceFactory.getService().quickFindAsset( match,
                                                              archiveBox.getValue(),
                                                              0,
                                                              5,
                                                              new GenericCallback<TableDataResult>() {


                                                                  public void onSuccess(TableDataResult result) {
                                                                      List<SuggestOracle.Suggestion> items = new ArrayList<SuggestOracle.Suggestion>();
                                                                      for ( int i = 0; i < result.data.length; i++ ) {
                                                                          if ( !result.data[i].id.equals( "MORE" ) ) { //NON-NLS
                                                                              final String str = result.data[i].values[0];
                                                                              items.add( new SuggestOracle.Suggestion() {

                                                                                  public String getDisplayString() {
                                                                                      return str;
                                                                                  }

                                                                                  public String getReplacementString() {
                                                                                      return str;
                                                                                  }

                                                                              } );

                                                                          }
                                                                      }
                                                                      cb.onSuggestionsReady( r,
                                                                                             new SuggestOracle.Response( items ) );
                                                                  }

                                                              } );

    }

}
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