Java tutorial
//The MIT License // //Copyright (c) 2009 nodchip // //Permission is hereby granted, free of charge, to any person obtaining a copy //of this software and associated documentation files (the "Software"), to deal //in the Software without restriction, including without limitation the rights //to use, copy, modify, merge, publish, distribute, sublicense, and/or sell //copies of the Software, and to permit persons to whom the Software is //furnished to do so, subject to the following conditions: // //The above copyright notice and this permission notice shall be included in //all copies or substantial portions of the Software. // //THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR //IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, //FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE //AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER //LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, //OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN //THE SOFTWARE. package tv.dyndns.kishibe.qmaclone.client; import java.util.ArrayList; import java.util.List; import java.util.logging.Level; import java.util.logging.Logger; import tv.dyndns.kishibe.qmaclone.client.packet.PacketProblem; import tv.dyndns.kishibe.qmaclone.client.report.ProblemReportUi; import com.google.gwt.core.client.Scheduler; import com.google.gwt.core.client.Scheduler.RepeatingCommand; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.event.dom.client.FocusEvent; import com.google.gwt.event.dom.client.FocusHandler; import com.google.gwt.user.client.rpc.AsyncCallback; import com.google.gwt.user.client.ui.Button; 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.TextBox; import com.google.gwt.user.client.ui.VerticalPanel; public class PanelRatioReport extends VerticalPanel implements ClickHandler { private static final Logger logger = Logger.getLogger(PanelRatioReport.class.getName()); private static final int MAX_PROBLEMS_PER_PAGE = 100; private final Button buttonAdd = new Button("??", this); private final Button buttonRemove = new Button("??", this); private final Button buttonUpdate = new Button("", this); private final TextBox textBoxProblemNumber = new TextBox(); private final SimplePanel panelGrid = new SimplePanel(); private boolean enabled = true; private final RepeatingCommand commandCheckProblemId = new RepeatingCommand() { @Override public boolean execute() { final boolean ok = checkProblemId(); buttonAdd.setEnabled(ok && enabled); buttonRemove.setEnabled(ok && enabled); return isAttached(); } }; private void setEnable(boolean enabled) { this.enabled = enabled; buttonAdd.setEnabled(enabled); buttonRemove.setEnabled(enabled); buttonUpdate.setEnabled(enabled); } public PanelRatioReport() { setWidth("800px"); setHorizontalAlignment(ALIGN_CENTER); add(new HTML( "??????????????????<br/>????????????????<br/>?????????????<br/>??????????")); HorizontalPanel idPanel = new HorizontalPanel(); idPanel.setVerticalAlignment(ALIGN_MIDDLE); textBoxProblemNumber.setWidth("240px"); textBoxProblemNumber.addFocusHandler(focusHandler); idPanel.add(textBoxProblemNumber); idPanel.add(buttonAdd); idPanel.add(buttonRemove); add(idPanel); add(buttonUpdate); add(panelGrid); } private final FocusHandler focusHandler = new FocusHandler() { @Override public void onFocus(FocusEvent event) { textBoxProblemNumber.selectAll(); } }; private void update() { final int userCode = UserData.get().getUserCode(); Service.Util.getInstance().getUserProblemReport(userCode, callbackGetProblemList); } private final AsyncCallback<List<PacketProblem>> callbackGetProblemList = new AsyncCallback<List<PacketProblem>>() { @Override public void onSuccess(List<PacketProblem> result) { if (result == null) { logger.log(Level.WARNING, "???????"); return; } panelGrid.setWidget(new ProblemReportUi(result, false, true, MAX_PROBLEMS_PER_PAGE)); setEnable(true); } @Override public void onFailure(Throwable caught) { logger.log(Level.WARNING, "????????", caught); } }; @Override public void onClick(ClickEvent event) { final Object sender = event.getSource(); final String message = "???????????????????????"; if (sender == buttonAdd) { // ?? try { final int problemId = Integer.parseInt(textBoxProblemNumber.getText()); final int userCode = UserData.get().getUserCode(); final List<Integer> problemIds = new ArrayList<Integer>(); problemIds.add(problemId); Service.Util.getInstance().addProblemIdsToReport(userCode, problemIds, callbackAddProblemIdsToReport); } catch (Exception e) { logger.log(Level.WARNING, message); } } else if (sender == buttonRemove) { // ?? try { final int problemID = Integer.parseInt(textBoxProblemNumber.getText()); final int userCode = UserData.get().getUserCode(); Service.Util.getInstance().removeProblemIDFromReport(userCode, problemID, callbackRemoveProblemIdFromReport); } catch (Exception e) { logger.log(Level.WARNING, message); } } else if (sender == buttonUpdate) { // setEnable(false); update(); } } private final AsyncCallback<Void> callbackAddProblemIdsToReport = new AsyncCallback<Void>() { @Override public void onSuccess(Void result) { textBoxProblemNumber.setText("??????"); } @Override public void onFailure(Throwable caught) { logger.log(Level.WARNING, "???????", caught); } }; private final AsyncCallback<Void> callbackRemoveProblemIdFromReport = new AsyncCallback<Void>() { @Override public void onSuccess(Void result) { textBoxProblemNumber.setText("??????"); } @Override public void onFailure(Throwable caught) { logger.log(Level.WARNING, "???????", caught); } }; private boolean checkProblemId() { try { Integer.parseInt(textBoxProblemNumber.getText()); } catch (Exception e) { return false; } return true; } @Override protected void onLoad() { super.onLoad(); Scheduler.get().scheduleFixedDelay(commandCheckProblemId, 1000); } }