ingo@862: package de.intevation.flys.client.client.ui;
ingo@862: 
ingo@862: import com.google.gwt.core.client.GWT;
ingo@862: import com.google.gwt.user.client.Timer;
ingo@865: import com.google.gwt.user.client.rpc.AsyncCallback;
ingo@862: 
ingo@862: import com.smartgwt.client.types.Alignment;
ingo@862: import com.smartgwt.client.types.Positioning;
ingo@870: import com.smartgwt.client.types.VerticalAlignment;
ingo@862: import com.smartgwt.client.widgets.Canvas;
ingo@870: import com.smartgwt.client.widgets.Img;
ingo@862: import com.smartgwt.client.widgets.Label;
ingo@1432: import com.smartgwt.client.widgets.events.ClickEvent;
ingo@1432: import com.smartgwt.client.widgets.events.ClickHandler;
ingo@1432: import com.smartgwt.client.widgets.layout.HLayout;
ingo@870: import com.smartgwt.client.widgets.layout.VLayout;
ingo@862: 
ingo@865: import de.intevation.flys.client.client.Config;
ingo@878: import de.intevation.flys.client.client.FLYSConstants;
ingo@1432: import de.intevation.flys.client.client.event.HasStepBackHandlers;
ingo@1432: import de.intevation.flys.client.client.event.StepBackEvent;
ingo@1432: import de.intevation.flys.client.client.event.StepBackHandler;
ingo@865: import de.intevation.flys.client.client.services.DescribeArtifactService;
ingo@865: import de.intevation.flys.client.client.services.DescribeArtifactServiceAsync;
ingo@862: import de.intevation.flys.client.shared.model.Artifact;
ingo@1432: import de.intevation.flys.client.shared.model.ArtifactDescription;
ingo@870: import de.intevation.flys.client.shared.model.CalculationMessage;
ingo@1432: import de.intevation.flys.client.shared.model.DataList;
ingo@862: 
christian@4131: import java.util.ArrayList;
christian@4131: import java.util.List;
christian@4131: 
ingo@862: 
ingo@1432: public class LoadingPanel extends Canvas implements HasStepBackHandlers {
ingo@862: 
christian@4131:     private static final long serialVersionUID = -7806425431408987601L;
christian@4131: 
ingo@870:     public static final int UPDATE_INTERVAL = 1000 * 3;
ingo@865: 
ingo@865:     public static final DescribeArtifactServiceAsync describe =
ingo@865:         GWT.create(DescribeArtifactService.class);
ingo@865: 
ingo@878:     private FLYSConstants MSG    = GWT.create(FLYSConstants.class);
ingo@870: 
ingo@862: 
ingo@1432:     protected List<StepBackHandler> handlers;
ingo@1432: 
ingo@862:     protected CollectionView parent;
ingo@862:     protected Artifact       artifact;
ingo@862: 
ingo@870:     protected VLayout dialog;
ingo@1432:     protected HLayout cancelRow;
ingo@862:     protected Label   msg;
ingo@870:     protected Label   title;
ingo@862: 
ingo@862:     protected int i;
ingo@862: 
ingo@862: 
ingo@862:     public LoadingPanel(CollectionView parent, Artifact artifact) {
ingo@862:         super();
ingo@862: 
ingo@1432:         this.handlers = new ArrayList<StepBackHandler>();
ingo@862:         this.parent   = parent;
ingo@862:         this.artifact = artifact;
ingo@870:         this.msg      = new Label("");
ingo@870:         this.title    = new Label("");
ingo@862:         this.dialog   = createDialog();
ingo@862: 
ingo@862:         this.i = 0;
ingo@862: 
ingo@862:         initLayout();
ingo@862:         startTimer();
ingo@862:     }
ingo@862: 
ingo@862: 
ingo@862:     private void initLayout() {
ingo@862:         setWidth("100%");
ingo@862:         setHeight("98%");
raimund@898:         setBackgroundColor("#7f7f7f");
ingo@862:         setOpacity(50);
ingo@862:         setPosition(Positioning.RELATIVE);
ingo@862: 
ingo@862:         parent.addChild(this);
ingo@862:         parent.addChild(dialog);
ingo@862:         dialog.moveTo(0, 20);
ingo@862:         moveTo(0, 7);
ingo@862:     }
ingo@862: 
ingo@862: 
ingo@865:     public void setArtifact(Artifact artifact) {
ingo@865:         this.artifact = artifact;
ingo@865:     }
ingo@865: 
ingo@865: 
ingo@1432:     public Artifact getArtifact() {
ingo@1432:         return artifact;
ingo@1432:     }
ingo@1432: 
ingo@1432: 
ingo@1432:     @Override
ingo@1432:     public void addStepBackHandler(StepBackHandler handler) {
ingo@1432:         if (handler != null) {
ingo@1432:             handlers.add(handler);
ingo@1432:         }
ingo@1432:     }
ingo@1432: 
ingo@1432: 
ingo@1432:     /**
ingo@1432:      * This method is called after the user has clicked the button to cancel the
ingo@1432:      * current process.
ingo@1432:      *
ingo@1432:      * @param e The StepBackEvent.
ingo@1432:      */
ingo@1432:     protected void fireStepBackEvent(StepBackEvent e) {
ingo@1432:         for (StepBackHandler handler: handlers) {
ingo@1432:             handler.onStepBack(e);
ingo@1432:         }
ingo@1432:     }
ingo@1432: 
ingo@1432: 
ingo@870:     protected VLayout createDialog() {
raimund@1399: 
raimund@1399:         String baseUrl = GWT.getHostPageBaseURL();
raimund@1399: 
ingo@870:         title.setStyleName("loading-title");
ingo@870:         title.setHeight(25);
ingo@870:         title.setWidth100();
ingo@870: 
ingo@862:         msg.setStyleName("loading-message");
ingo@870:         msg.setValign(VerticalAlignment.TOP);
ingo@870:         msg.setWidth100();
ingo@862:         msg.setHeight(100);
ingo@862: 
raimund@1399:         Img img = new Img(baseUrl + MSG.loadingImg(), 25, 25);
ingo@870: 
ingo@1432:         Label cancelLabel = new Label(MSG.cancelCalculationLabel());
ingo@1432:         Img   cancel      = new Img(baseUrl + MSG.cancelCalculation(), 25, 25);
ingo@1432:         cancel.addClickHandler(new ClickHandler() {
ingo@1432:             @Override
ingo@1432:             public void onClick(ClickEvent e) {
ingo@1432:                 cancel();
ingo@1432:             }
ingo@1432:         });
ingo@1432: 
ingo@1432:         cancelRow = new HLayout();
ingo@1432:         cancelRow.setHeight(27);
ingo@1432:         cancelRow.setWidth100();
ingo@1432:         cancelRow.addMember(cancel);
ingo@1432:         cancelRow.addMember(cancelLabel);
ingo@1432: 
ingo@870:         VLayout box = new VLayout();
ingo@870:         box.setStyleName("loading-box");
ingo@870:         box.setAlign(VerticalAlignment.TOP);
ingo@870:         box.setDefaultLayoutAlign(VerticalAlignment.TOP);
ingo@870:         box.addMember(title);
ingo@870:         box.addMember(msg);
ingo@1432:         box.addMember(cancelRow);
ingo@870:         box.setMembersMargin(0);
ingo@870:         box.setHeight(125);
ingo@870:         box.setWidth(275);
ingo@870: 
ingo@870:         dialog = new VLayout();
ingo@870:         dialog.setAlign(Alignment.CENTER);
ingo@862:         dialog.setDefaultLayoutAlign(Alignment.CENTER);
ingo@870:         dialog.setMembersMargin(5);
ingo@870:         dialog.setHeight100();
ingo@862:         dialog.setWidth100();
ingo@862: 
ingo@870:         dialog.addMember(img);
ingo@870:         dialog.addMember(box);
ingo@862: 
ingo@862:         return dialog;
ingo@862:     }
ingo@862: 
ingo@862: 
ingo@1432:     public String getTargetState() {
ingo@1432:         ArtifactDescription desc = getArtifact().getArtifactDescription();
ingo@1432:         DataList[]       oldData = desc.getOldData();
ingo@1432: 
ingo@1432:         return oldData[oldData.length -1].getState();
ingo@1432:     }
ingo@1432: 
ingo@1432: 
ingo@862:     private void startTimer() {
ingo@862:         Timer t = new Timer() {
ingo@862:             @Override
ingo@862:             public void run() {
ingo@862:                 update();
ingo@862:             }
ingo@862:         };
ingo@862:         t.schedule(UPDATE_INTERVAL);
ingo@862:     }
ingo@862: 
ingo@862: 
ingo@865:     protected void update() {
ingo@870:         updateMessage();
ingo@862: 
ingo@865:         final Config config = Config.getInstance();
ingo@865:         final String locale = config.getLocale();
ingo@862: 
raimund@1425:         describe.describe(locale, artifact, new AsyncCallback<Artifact>() {
christian@4131:             @Override
ingo@865:             public void onFailure(Throwable t) {
ingo@865:                 GWT.log("Error while DESCRIBE artifact: " + t.getMessage());
ingo@1432: 
ingo@865:                 startTimer();
ingo@865:             }
ingo@862: 
christian@4131:             @Override
ingo@865:             public void onSuccess(Artifact artifact) {
ingo@865:                 GWT.log("Successfully DESCRIBE artifact.");
ingo@865: 
ingo@865:                 setArtifact(artifact);
ingo@865: 
ingo@865:                 if (artifact.isInBackground()) {
ingo@865:                     startTimer();
ingo@865:                 }
ingo@865:                 else {
ingo@865:                     finish();
ingo@865:                 }
ingo@865:             }
ingo@865:         });
ingo@862:     }
ingo@862: 
ingo@862: 
ingo@870:     protected void updateMessage() {
ingo@870:         List<CalculationMessage> messages = artifact.getBackgroundMessages();
ingo@870:         if (messages != null && messages.size() > 0) {
ingo@870:             CalculationMessage calcMsg = messages.get(0);
ingo@870:             title.setContents(getStepTitle(calcMsg));
ingo@870:             msg.setContents(calcMsg.getMessage());
ingo@870:         }
ingo@870:         else {
ingo@878:             title.setContents(MSG.calculationStarted());
ingo@870:         }
ingo@870:     }
ingo@870: 
ingo@870: 
ingo@870:     protected String getStepTitle(CalculationMessage msg) {
ingo@878:         return MSG.step() + " " + msg.getCurrentStep() + "/" + msg.getSteps();
ingo@870:     }
ingo@870: 
ingo@870: 
ingo@1432:     private void cancel() {
ingo@1432:         fireStepBackEvent(new StepBackEvent(getTargetState()));
ingo@1432:         parent.removeChild(dialog);
ingo@1432:         parent.removeChild(this);
ingo@1432:     }
ingo@1432: 
ingo@1432: 
ingo@862:     private void finish() {
ingo@1432:         parent.removeChild(dialog);
ingo@862:         parent.removeChild(this);
ingo@1270:         parent.setArtifact(artifact);
ingo@862:     }
ingo@862: }
ingo@862: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :