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.screen; import static org.freemedsoftware.gwt.client.i18n.I18nUtil._; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import org.freemedsoftware.gwt.client.CurrentState; import org.freemedsoftware.gwt.client.JsonUtil; import org.freemedsoftware.gwt.client.ScreenInterface; import org.freemedsoftware.gwt.client.Util; import org.freemedsoftware.gwt.client.Util.ProgramMode; import org.freemedsoftware.gwt.client.Api.PatientInterfaceAsync; import org.freemedsoftware.gwt.client.i18n.AppConstants; import org.freemedsoftware.gwt.client.widget.CustomButton; import org.freemedsoftware.gwt.client.widget.CustomTable; import org.freemedsoftware.gwt.client.widget.CustomTable.TableRowClickHandler; import org.freemedsoftware.gwt.client.widget.PatientWidget; 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.KeyUpEvent; import com.google.gwt.event.dom.client.KeyUpHandler; import com.google.gwt.event.logical.shared.ValueChangeEvent; import com.google.gwt.event.logical.shared.ValueChangeHandler; import com.google.gwt.http.client.Request; 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.Response; 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.rpc.AsyncCallback; import com.google.gwt.user.client.ui.FlexTable; import com.google.gwt.user.client.ui.HasHorizontalAlignment; import com.google.gwt.user.client.ui.HorizontalPanel; import com.google.gwt.user.client.ui.Label; import com.google.gwt.user.client.ui.ListBox; import com.google.gwt.user.client.ui.TextBox; import com.google.gwt.user.client.ui.VerticalPanel; public class PatientSearchScreen extends ScreenInterface { protected CustomTable sortableTable = null; protected PatientWidget wSmartSearch = null; protected ListBox wFieldName = null; protected TextBox wFieldValue = null; private static List<PatientSearchScreen> patientSearchScreenList = null; //Creates only desired amount of instances if we follow this pattern otherwise we have public constructor as well public static PatientSearchScreen getInstance() { PatientSearchScreen patientSearchScreen = null; if (patientSearchScreenList == null) patientSearchScreenList = new ArrayList<PatientSearchScreen>(); if (patientSearchScreenList.size() < AppConstants.MAX_SEARCH_TABS)//creates & returns new next instance of PatientSearchScreen patientSearchScreenList.add(patientSearchScreen = new PatientSearchScreen()); else //returns last instance of PatientSearchScreen from list patientSearchScreen = patientSearchScreenList.get(AppConstants.MAX_SEARCH_TABS - 1); return patientSearchScreen; } public static boolean removeInstance(PatientSearchScreen patientSearchScreen) { return patientSearchScreenList.remove(patientSearchScreen); } public PatientSearchScreen() { final VerticalPanel verticalPanel = new VerticalPanel(); initWidget(verticalPanel); final FlexTable flexTable = new FlexTable(); verticalPanel.add(flexTable); flexTable.setWidth("100%"); final Label smartSearchLabel = new Label(_("Smart Search") + " : "); flexTable.setWidget(0, 0, smartSearchLabel); final HorizontalPanel searchHPanel = new HorizontalPanel(); searchHPanel.setWidth("100%"); flexTable.setWidget(0, 1, searchHPanel); wSmartSearch = new PatientWidget(); wSmartSearch.setWidth("100%"); wSmartSearch.addChangeHandler(new ValueChangeHandler<Integer>() { @Override public void onValueChange(ValueChangeEvent<Integer> event) { Integer val = ((PatientWidget) event.getSource()).getValue(); // Log.debug("Patient value = " + val.toString()); try { if (val.compareTo(new Integer(0)) != 0) { String ptInfo = wSmartSearch.getText(); if (ptInfo.indexOf("]") != -1) ptInfo = ptInfo.substring(0, ptInfo.indexOf("[")); spawnPatientScreen(val, ptInfo); clearForm(); } } catch (Exception e) { // Don't do anything if no patient is declared GWT.log("Caught exception", e); } } }); addChildWidget(wSmartSearch); searchHPanel.add(wSmartSearch); if (CurrentState.getMainScreen().isNeedToCreate(AppConstants.PATIENT_CATEGORY, AppConstants.NEW_PATIENT)) { final CustomButton newPatient = new CustomButton(_("Add New Patient"), AppConstants.ICON_ADD_PERSON); newPatient.addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent arg0) { PatientForm patientForm = PatientForm.getInstance(); patientForm.setPrimaryFacility(CurrentState.getDefaultFacility()); Util.spawnTab(AppConstants.NEW_PATIENT, patientForm); } }); searchHPanel.add(newPatient); } final Label fieldSearchLabel = new Label(_("Field Search") + " : "); flexTable.setWidget(1, 0, fieldSearchLabel); wFieldName = new ListBox(); flexTable.setWidget(1, 1, wFieldName); wFieldName.setVisibleItemCount(1); wFieldName.addItem(_("Internal ID"), "ptid"); wFieldName.addItem(_("Social Security Number"), "ptssn"); wFieldName.addItem(_("Drivers License"), "ptdmv"); wFieldName.addItem(_("Email Address"), "ptemail"); wFieldName.addItem(_("City"), "city"); wFieldName.addItem(_("Zip/Postal Code"), "ptzip"); wFieldName.addItem(_("Home Phone"), "pthphone"); wFieldName.addItem(_("Work Phone"), "ptwphone"); wFieldName.addItem(_("Age"), "age"); wFieldName.addItem(_("First Name"), "ptfname"); wFieldName.addItem(_("Last Name"), "ptlname"); wFieldValue = new TextBox(); flexTable.setWidget(2, 1, wFieldValue); wFieldValue.setWidth("100%"); wFieldValue.addKeyUpHandler(new KeyUpHandler() { @Override public void onKeyUp(KeyUpEvent arg0) { // TODO Auto-generated method stub refreshSearch(); } }); /* wFieldValue.addChangeHandler(new ChangeHandler() { @Override public void onChange(ChangeEvent event) { } });*/ final HorizontalPanel horizontalPanel = new HorizontalPanel(); verticalPanel.add(horizontalPanel); sortableTable = new CustomTable(); sortableTable.setNoItemsText(_("No patients found with the specified criteria.")); sortableTable.setWidth("100%"); sortableTable.addColumn(_("Last Name"), "last_name"); sortableTable.addColumn(_("First Name"), "first_name"); sortableTable.addColumn(_("Middle"), "middle_name"); sortableTable.addColumn(_("Internal ID"), "patient_id"); sortableTable.addColumn(_("Date of Birth"), "date_of_birth"); sortableTable.addColumn(_("Age"), "age"); sortableTable.setTableRowClickHandler(new TableRowClickHandler() { @Override public void handleRowClick(HashMap<String, String> data, int col) { // Get information on row... JsonUtil.debug("search table handle row click"); try { final Integer patientId = new Integer(data.get("id")); final String patientName = data.get("last_name") + ", " + data.get("first_name") + data.get("patient_id"); spawnPatientScreen(patientId, patientName); } catch (Exception e) { GWT.log("Caught exception: ", e); } } }); //+ " [" //+ data.get("date_of_birth") + "] " final VerticalPanel stPanel = new VerticalPanel(); stPanel.setWidth("100%"); stPanel.add(sortableTable); stPanel.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER); verticalPanel.add(stPanel); // Set visible focus *after* this is shown, otherwise it won't focus. try { wSmartSearch.setFocus(true); } catch (Exception e) { GWT.log("Caught exception: ", e); } Util.setFocus(wSmartSearch); } @SuppressWarnings("unchecked") protected void refreshSearch() { sortableTable.clearData(); if (Util.getProgramMode() == ProgramMode.STUBBED) { HashMap<String, String> a = new HashMap<String, String>(); a.put("last_name", "Hackenbush"); a.put("first_name", "Hugo"); a.put("middle_name", "Z"); a.put("patient_id", "HACK01"); a.put("date_of_birth", "1979-08-10"); a.put("age", "28"); a.put("id", "1"); List<HashMap<String, String>> l = new ArrayList<HashMap<String, String>>(); l.add(a); sortableTable.loadData((HashMap<String, String>[]) l.toArray(new HashMap<?, ?>[0])); } else if (Util.getProgramMode() == ProgramMode.JSONRPC) { HashMap<String, String> criteria = new HashMap<String, String>(); criteria.put(wFieldName.getValue(wFieldName.getSelectedIndex()), wFieldValue.getText()); String[] params = { JsonUtil.jsonify(criteria) }; RequestBuilder builder = new RequestBuilder(RequestBuilder.POST, URL.encode(Util.getJsonRequest("org.freemedsoftware.api.PatientInterface.Search", params))); try { builder.sendRequest(null, new RequestCallback() { public void onError(Request request, Throwable ex) { Window.alert(ex.toString()); } public void onResponseReceived(Request request, Response response) { if (Util.checkValidSessionResponse(response.getText())) { if (200 == response.getStatusCode()) { HashMap<String, String>[] result = (HashMap<String, String>[]) JsonUtil .shoehornJson(JSONParser.parseStrict(response.getText()), "HashMap<String,String>[]"); sortableTable.loadData(result); } else { Window.alert(response.toString()); } } } }); } catch (RequestException e) { Window.alert(e.toString()); } } else { PatientInterfaceAsync service = null; try { service = (PatientInterfaceAsync) Util .getProxy("org.freemedsoftware.gwt.client.Api.PatientInterface"); } catch (Exception e) { GWT.log("Caught exception: ", e); } HashMap<String, String> criteria = new HashMap<String, String>(); criteria.put(wFieldName.getValue(wFieldName.getSelectedIndex()), wFieldValue.getText()); service.Search(criteria, new AsyncCallback<HashMap<String, String>[]>() { public void onSuccess(HashMap<String, String>[] result) { // Log.info("found " + new // Integer(r.length).toString() + " // results for Search"); sortableTable.loadData(result); } public void onFailure(Throwable t) { // Log.error("Caught exception: ", t); } }); } } /** * Create new tab for patient. * * @param patient */ public void spawnPatientScreen(Integer patient, String patientName) { PatientScreen s = new PatientScreen(); s.setPatient(patient); Util.spawnTab(patientName, s); } public void clearForm() { wSmartSearch.clear(); wFieldValue.setText(""); } @Override public void closeScreen() { // TODO Auto-generated method stub super.closeScreen(); removeInstance(this); } }