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.patient; import static org.freemedsoftware.gwt.client.i18n.I18nUtil._; import java.util.ArrayList; import java.util.Date; import java.util.HashMap; import java.util.List; import org.freemedsoftware.gwt.client.JsonUtil; import org.freemedsoftware.gwt.client.PatientScreenInterface; import org.freemedsoftware.gwt.client.Util; import org.freemedsoftware.gwt.client.Util.ProgramMode; import org.freemedsoftware.gwt.client.screen.ReportingScreen; import org.freemedsoftware.gwt.client.widget.CustomDatePicker; import org.freemedsoftware.gwt.client.widget.CustomTable; import org.freemedsoftware.gwt.client.widget.CustomTable.TableRowClickHandler; import org.freemedsoftware.gwt.client.widget.PatientWidget; import org.freemedsoftware.gwt.client.widget.SupportModuleWidget; import com.google.gwt.core.client.GWT; import com.google.gwt.event.dom.client.ChangeEvent; import com.google.gwt.event.dom.client.ChangeHandler; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.event.logical.shared.ValueChangeEvent; import com.google.gwt.event.logical.shared.ValueChangeHandler; 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.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.PushButton; import com.google.gwt.user.client.ui.TextBox; import com.google.gwt.user.client.ui.VerticalPanel; import com.google.gwt.user.client.ui.Widget; import com.google.gwt.user.datepicker.client.DateBox; public class PatientReportingScreen extends PatientScreenInterface { public final static String moduleName = ReportingScreen.moduleName; protected CustomTable reportTable; protected FlexTable reportParametersTable; protected HorizontalPanel reportActionPanel; protected HashMap<Integer, String> reportParameters = new HashMap<Integer, String>(); protected static String locale = "en_US"; protected String thisReportUUID = null; protected Label thisReportName = new Label(); protected PushButton reportActionHTML, reportActionXML, reportActionPDF; public enum ReportType { PDF, XLS, HTML, TEXT, XML }; public PatientReportingScreen() { super(moduleName); final HorizontalPanel horizontalPanel = new HorizontalPanel(); initWidget(horizontalPanel); horizontalPanel.setSize("100%", "100%"); final VerticalPanel verticalPanel = new VerticalPanel(); horizontalPanel.add(verticalPanel); verticalPanel.setSize("100%", "100%"); final Label pleaseChooseALabel = new Label(_("Please choose a report.")); verticalPanel.add(pleaseChooseALabel); pleaseChooseALabel.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_LEFT); reportTable = new CustomTable(); verticalPanel.add(reportTable); reportTable.setAllowSelection(false); reportTable.setSize("100%", "100%"); reportTable.setIndexName("report_uuid"); reportTable.addColumn(_("Name"), "report_name"); reportTable.addColumn(_("Description"), "report_desc"); reportTable.setTableRowClickHandler(new TableRowClickHandler() { @Override public void handleRowClick(HashMap<String, String> data, int col) { String uuid = data.get("report_uuid"); thisReportUUID = uuid; getReportInformation(uuid); } }); final VerticalPanel paramContainer = new VerticalPanel(); horizontalPanel.add(paramContainer); // Report label paramContainer.add(thisReportName); reportParametersTable = new FlexTable(); paramContainer.add(reportParametersTable); reportParametersTable.setVisible(false); reportParametersTable.setSize("100%", "100%"); reportActionPanel = new HorizontalPanel(); reportActionPanel.setVisible(false); // PDF reportActionPDF = new PushButton(); reportActionPDF.setHTML("<img src=\"resources/images/pdf.32x32.png\" /><br/>" + "PDF"); reportActionPDF.setStylePrimaryName("freemed-PushButton"); reportActionPDF.addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent evt) { runReport(ReportType.PDF); } }); reportActionPanel.add(reportActionPDF); // HTML reportActionHTML = new PushButton(); reportActionHTML.setHTML("<img src=\"resources/images/html.32x32.png\" /><br/>" + "HTML"); reportActionHTML.setStylePrimaryName("freemed-PushButton"); reportActionHTML.addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent evt) { runReport(ReportType.HTML); } }); reportActionPanel.add(reportActionHTML); // XML reportActionXML = new PushButton(); reportActionXML.setHTML("<img src=\"resources/images/xml.32x32.png\" /><br/>" + "XML"); reportActionXML.setStylePrimaryName("freemed-PushButton"); reportActionXML.addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent evt) { runReport(ReportType.XML); } }); reportActionPanel.add(reportActionXML); paramContainer.add(reportActionPanel); // After everything is initialized, start population routine. populate(); } protected void runReport(ReportType reportType) { // Get report type String type = null; switch (reportType) { case PDF: type = "pdf"; break; case HTML: type = "html"; break; case XLS: type = "xls"; break; case XML: type = "xml"; break; case TEXT: default: type = "text"; break; } // Open window for request Window.open(Util.getJsonRequest("org.freemedsoftware.module.PatientReporting.GenerateReport", new String[] { thisReportUUID, type, JsonUtil.jsonify(getParameters()) }), "Report", ""); } public void populate() { if (Util.getProgramMode() == ProgramMode.STUBBED) { // TODO: handle stubbed } else if (Util.getProgramMode() == ProgramMode.JSONRPC) { String[] params = { locale }; RequestBuilder builder = new RequestBuilder(RequestBuilder.POST, URL .encode(Util.getJsonRequest("org.freemedsoftware.module.PatientReporting.GetReports", params))); try { builder.sendRequest(null, new RequestCallback() { public void onError(com.google.gwt.http.client.Request request, Throwable ex) { GWT.log("Exception", ex); } @SuppressWarnings("unchecked") public void onResponseReceived(com.google.gwt.http.client.Request request, com.google.gwt.http.client.Response response) { if (200 == response.getStatusCode()) { HashMap<String, String>[] result = (HashMap<String, String>[]) JsonUtil.shoehornJson( JSONParser.parseStrict(response.getText()), "HashMap<String,String>[]"); if (result != null) { reportTable.loadData(result); } else { } } else { } } }); } catch (RequestException e) { GWT.log("Exception", e); } } else { // TODO: Not done yet } } /** * Get array of parameter values for current report. * * @return */ public String[] getParameters() { List<String> r = new ArrayList<String>(); // First parameter is patient r.add(0, getPatientId().toString()); // Then the rest as usual for (int iter = 0; iter < reportParameters.size(); iter++) { r.add(iter + 1, reportParameters.get(Integer.valueOf(iter))); } return r.toArray(new String[0]); } /** * Callback to convert report parameter information into a form. * * @param data */ protected void populateReportParameters(HashMap<String, String> data) { reportParametersTable.clear(); reportParameters.clear(); thisReportName.setText(data.get("report_name")); for (int iter = 0; iter < new Integer(data.get("report_param_count")).intValue(); iter++) { final int i = iter; final String iS = new Integer(iter).toString(); String type = data.get("report_param_type_" + iS); reportParametersTable.setText(iter, 0, data.get("report_param_name_" + iS)); Widget w = null; if (type.compareToIgnoreCase("Date") == 0) { w = new CustomDatePicker(); ((CustomDatePicker) w).addValueChangeHandler(new ValueChangeHandler<Date>() { @Override public void onValueChange(ValueChangeEvent<Date> event) { Date dt = ((CustomDatePicker) event.getSource()).getValue(); CustomDatePicker w = ((CustomDatePicker) event.getSource()); String formatted = w.getFormat().format(new DateBox(), dt); reportParameters.put(i, formatted); } }); } else if (type.compareToIgnoreCase("Provider") == 0) { w = new SupportModuleWidget("ProviderModule"); ((SupportModuleWidget) w).addChangeHandler(new ValueChangeHandler<Integer>() { @Override public void onValueChange(ValueChangeEvent<Integer> event) { reportParameters.put(i, ((SupportModuleWidget) event.getSource()).getValue().toString()); } }); } else if (type.compareToIgnoreCase("Patient") == 0) { w = new PatientWidget(); ((PatientWidget) w).addChangeHandler(new ValueChangeHandler<Integer>() { @Override public void onValueChange(ValueChangeEvent<Integer> event) { reportParameters.put(i, ((PatientWidget) event.getSource()).getValue().toString()); } }); } else { // Default to text box w = new TextBox(); ((TextBox) w).addChangeHandler(new ChangeHandler() { @Override public void onChange(ChangeEvent evt) { reportParameters.put(i, ((TextBox) evt.getSource()).getText()); } }); } reportParameters.put(iter, ""); reportParametersTable.setWidget(iter, 1, w); } // Show this when everything is populated reportParametersTable.setVisible(true); reportActionPanel.setVisible(true); } /** * Get parameters for a specific report by uuid. * * @param uuid */ public void getReportInformation(String uuid) { if (Util.getProgramMode() == ProgramMode.STUBBED) { // TODO: handle stubbed } else if (Util.getProgramMode() == ProgramMode.JSONRPC) { String[] params = { uuid }; RequestBuilder builder = new RequestBuilder(RequestBuilder.POST, URL.encode(Util .getJsonRequest("org.freemedsoftware.module.PatientReporting.GetReportParameters", params))); try { builder.sendRequest(null, new RequestCallback() { public void onError(com.google.gwt.http.client.Request request, Throwable ex) { GWT.log("Exception", ex); } @SuppressWarnings("unchecked") public void onResponseReceived(com.google.gwt.http.client.Request request, com.google.gwt.http.client.Response response) { if (200 == response.getStatusCode()) { HashMap<String, String> result = (HashMap<String, String>) JsonUtil.shoehornJson( JSONParser.parseStrict(response.getText()), "HashMap<String,String>"); if (result != null) { populateReportParameters(result); } } else { } } }); } catch (RequestException e) { GWT.log("Exception", e); } } else { // TODO: Not done yet. } } }