Java tutorial
/* * $Id$ * * Authors: * Jeff Buchbinder <jeff@freemedsoftware.org> * * FreeMED Electronic Medical Record and Practice Management System * Copyright (C) 1999-2012 FreeMED Software Foundation * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ package org.freemedsoftware.gwt.client.widget; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Set; import org.freemedsoftware.gwt.client.CurrentState; import org.freemedsoftware.gwt.client.HashSetter; import org.freemedsoftware.gwt.client.JsonUtil; import org.freemedsoftware.gwt.client.Util; import org.freemedsoftware.gwt.client.Util.ProgramMode; import com.google.gwt.http.client.RequestBuilder; import com.google.gwt.http.client.RequestCallback; import com.google.gwt.http.client.RequestException; import com.google.gwt.http.client.URL; import com.google.gwt.json.client.JSONParser; import com.google.gwt.user.client.Window; 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; public class ProviderWidget extends AsyncPicklistWidgetBase implements HashSetter { protected String hashMapping = null; protected void loadSuggestions(String req, final Request r, final Callback cb) { if (req.length() < CurrentState.getMinCharCountForSmartSearch()) return; if (Util.getProgramMode() == ProgramMode.STUBBED) { // Handle in a stubbed sort of way List<SuggestOracle.Suggestion> items = new ArrayList<SuggestOracle.Suggestion>(); map.clear(); addKeyValuePair(items, new String("Hackenbush, Hugo Z"), new String("1")); addKeyValuePair(items, new String("Firefly, Rufus T"), new String("2")); cb.onSuggestionsReady(r, new SuggestOracle.Response(items)); } else if (Util.getProgramMode() == ProgramMode.JSONRPC) { String[] params = { req, new Integer(20).toString() }; RequestBuilder builder = new RequestBuilder(RequestBuilder.POST, URL.encode( Util.getJsonRequest("org.freemedsoftware.module.ProviderModule.InternalPicklist", params))); try { builder.sendRequest(null, new RequestCallback() { public void onError(com.google.gwt.http.client.Request request, Throwable ex) { Window.alert(ex.toString()); } @SuppressWarnings("unchecked") public void onResponseReceived(com.google.gwt.http.client.Request request, com.google.gwt.http.client.Response response) { if (200 == response.getStatusCode()) { if (Util.checkValidSessionResponse(response.getText())) { HashMap<Integer, String> result = (HashMap<Integer, String>) JsonUtil.shoehornJson( JSONParser.parseStrict(response.getText()), "HashMap<Integer,String>"); if (result != null) { Set<Integer> keys = result.keySet(); Iterator<Integer> iter = keys.iterator(); List<SuggestOracle.Suggestion> items = new ArrayList<SuggestOracle.Suggestion>(); map.clear(); while (iter.hasNext()) { Integer keyInt = (Integer) iter.next(); String key = keyInt.toString(); String val = (String) result.get(keyInt); addKeyValuePair(items, val, key); } cb.onSuggestionsReady(r, new SuggestOracle.Response(items)); } } } else { Window.alert(response.toString()); } } }); } catch (RequestException e) { Window.alert(e.toString()); } } else { // TODO normal mode code goes here } } @Override public void setWidth(String width) { // TODO Auto-generated method stub super.setWidth(width); this.getTextEntryWidget().setWidth(width); } public void setValue(Integer v) { value = v; searchBox.setText(""); getTextForValue(value); } @Override public void getTextForValue(Integer val) { if (val > 0) { if (Util.getProgramMode() == ProgramMode.STUBBED) { searchBox.setText("Hackenbush, Hugo Z (STUB)"); } else if (Util.getProgramMode() == ProgramMode.JSONRPC) { // textBox.setEnabled(false); String[] params = { val.toString() }; RequestBuilder builder = new RequestBuilder(RequestBuilder.POST, URL .encode(Util.getJsonRequest("org.freemedsoftware.module.ProviderModule.To_Text", params))); try { builder.sendRequest(null, new RequestCallback() { public void onError(com.google.gwt.http.client.Request request, Throwable ex) { // textBox.setEnabled(true); Window.alert(ex.toString()); } public void onResponseReceived(com.google.gwt.http.client.Request request, com.google.gwt.http.client.Response response) { // textBox.setEnabled(true); if (Util.checkValidSessionResponse(response.getText())) { if (200 == response.getStatusCode()) { String result = (String) JsonUtil .shoehornJson(JSONParser.parseStrict(response.getText()), "String"); if (result != null) { searchBox.setText(result); } } else { Window.alert(response.toString()); } } } }); } catch (RequestException e) { // textBox.setEnabled(true); Window.alert(e.toString()); } } else { // TODO normal mode code goes here } } } public void setHashMapping(String hm) { hashMapping = hm; } public String getStoredValue() { return getValue().toString(); } public String getHashMapping() { return hashMapping; } public void setFromHash(HashMap<String, String> data) { setValue(Integer.parseInt(data.get(hashMapping))); } }