| /** |
| * |
| * Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany) |
| * |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Florian Pirchner <florian.pirchner@gmail.com> - Initial implementation |
| */ |
| package org.eclipse.osbp.vaadin.addons.suggesttext.client; |
| |
| import java.io.Serializable; |
| import java.util.Date; |
| import java.util.List; |
| |
| import com.google.gwt.user.client.ui.SuggestOracle.Request; |
| |
| // TODO: Auto-generated Javadoc |
| /** |
| * This class is responsible to delegate the query for suggestions to the |
| * serverside rpc. |
| */ |
| public class OQueryDelegate { |
| |
| /** The server rpc. */ |
| // instance |
| private final SuggestTextFieldServerRpc serverRpc; |
| |
| /** The current handle. */ |
| private String currentHandle; |
| |
| /** The current callback. */ |
| private FutureCallback currentCallback; |
| |
| /** |
| * Instantiates a new o query delegate. |
| * |
| * @param serverRpc |
| * the server rpc |
| */ |
| public OQueryDelegate(SuggestTextFieldServerRpc serverRpc) { |
| this.serverRpc = serverRpc; |
| } |
| |
| public void resetCurrentHandle() { |
| currentHandle = Long.toHexString(new Date().getTime()); |
| } |
| |
| /** |
| * Request suggestions. |
| * |
| * @param request |
| * the request |
| * @param callback |
| * the callback |
| */ |
| protected void requestSuggestions(Request request, FutureCallback callback) { |
| // dismiss older callbacks |
| resetCurrentHandle(); |
| |
| currentCallback = callback; |
| |
| serverRpc.requestSuggestions(currentHandle, request.getQuery(), request.getLimit()); |
| } |
| |
| /** |
| * Respond. |
| * |
| * @param handle |
| * the handle |
| * @param response |
| * the response |
| */ |
| public void respond(String handle, List<SuggestionResult> response) { |
| if (currentHandle.equals(handle)) { |
| currentCallback.respondSuggestions(response); |
| } |
| } |
| |
| /** |
| * A future to wait for responds from serverside. |
| */ |
| public interface FutureCallback { |
| |
| /** |
| * Respond suggestions. |
| * |
| * @param suggestions |
| * the suggestions |
| */ |
| void respondSuggestions(List<SuggestionResult> suggestions); |
| } |
| |
| /** |
| * The Class SuggestionResult. |
| */ |
| public static class SuggestionResult implements Serializable { |
| private static final long serialVersionUID = 166123789723L; |
| |
| /** The uuid. */ |
| public String uuid; |
| |
| /** The display text. */ |
| public String displayText; |
| |
| public String handleId; |
| |
| public SuggestionResult(){ |
| |
| } |
| |
| /** |
| * Instantiates a new suggestion result. |
| * |
| * @param uuid |
| * the uuid |
| * @param displayText |
| * the display text |
| */ |
| public SuggestionResult(String uuid, String displayText, String handleId) { |
| super(); |
| this.uuid = uuid; |
| this.displayText = displayText; |
| this.handleId = handleId; |
| } |
| |
| } |
| } |