下面列出了怎么用com.google.gwt.core.client.Scheduler.RepeatingCommand的API类实例代码及写法，或者点击链接到github查看源代码。
public PopupMessage(String title, String messageText) {
setHeaderControls(HeaderControls.HEADER_LABEL, HeaderControls.CLOSE_BUTTON);
setTitle(title);
setAlign(Alignment.CENTER);
setAutoSize(true);
centerInPage();
Label label=new Label(messageText);
label.setMinWidth(350);
VLayout layout= new VLayout();
layout.setMembersMargin(2);
layout.setMembers(label);
addItem(layout);
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
PopupMessage.this.destroy();
return false;
}
}, Session.get().getConfigAsInt("gui.popup.timeout") * 1000);
}
/**
* Populates the info box. Continuously reports which element has browser
* focus, and reports timing information for the stage loading.
*
* @param timeline timeline to report
*/
private static void showInfo(Timeline timeline) {
Element timeBox = Document.get().getElementById("timeline");
timeline.dump(timeBox);
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
private final Element activeBox = Document.get().getElementById("active");
@Override
public boolean execute() {
Element e = getActiveElement();
String text = (e != null ? e.getTagName() + " id:" + e.getId() : "none");
activeBox.setInnerText(text);
return true;
}
private native Element getActiveElement() /*-{
return $doc.activeElement;
}-*/;
}, 1000);
}
public void setActivePane(final TabPanelContent source) {
for (TabPanelContent tabPane : this.tabPaneList) {
if (!tabPane.equals(source)) {
tabPane.setActive(false);
}
}
source.getTabLink().setActive(true);
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
source.setActive(true);
return false;
}
}, 150);
}
public void setActive(final boolean active) {
this.active = active;
if (this.tabLink != null) {
this.tabLink.setActive(active);
}
StyleUtils.toggleStyle(this, TabPanelContent.STYLE_IN, active);
if (active) {
StyleUtils.addStyle(this, TabPanelContent.STYLE_ACTIVE);
} else {
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
StyleUtils.removeStyle(TabPanelContent.this, TabPanelContent.STYLE_ACTIVE);
return false;
}
}, 150);
}
}
public void show() {
this.ensureDismissButton();
this.redraw();
this.visible = true;
Widget modal = getContainerWidget();
if (modal.isAttached()) {
modal.removeFromParent();
}
Modal.MODAL_BACKDROP.show();
this.getElement().getStyle().setDisplay(Display.BLOCK);
RootPanel rootPanel = RootPanel.get();
rootPanel.add(modal);
StyleUtils.addStyle(rootPanel, Modal.STYLE_MODAL_OPEN);
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
StyleUtils.addStyle(Modal.this, Modal.STYLE_VISIBLE);
return false;
}
}, 150);
}
public void hide() {
final RootPanel rootPanel = RootPanel.get();
this.visible = false;
StyleUtils.removeStyle(Modal.this, Modal.STYLE_VISIBLE);
StyleUtils.removeStyle(rootPanel, Modal.STYLE_MODAL_OPEN);
Modal.MODAL_BACKDROP.hide();
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
Modal.this.getElement().getStyle().clearDisplay();
rootPanel.remove(getContainerWidget());
return false;
}
}, 150);
}
/**
* Populates the info box. Continuously reports which element has browser
* focus, and reports timing information for the stage loading.
*
* @param timeline timeline to report
*/
private static void showInfo(Timeline timeline) {
Element timeBox = Document.get().getElementById("timeline");
timeline.dump(timeBox);
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
private final Element activeBox = Document.get().getElementById("active");
@Override
public boolean execute() {
Element e = getActiveElement();
String text = (e != null ? e.getTagName() + " id:" + e.getId() : "none");
activeBox.setInnerText(text);
return true;
}
private native Element getActiveElement() /*-{
return $doc.activeElement;
}-*/;
}, 1000);
}
public void launch() {
if ( operations.isEmpty() ) {
return;
}
final Operation operation = operations.remove( 0 );
Scheduler.get().scheduleIncremental( new RepeatingCommand() {
@Override
public boolean execute() {
boolean res = operation.execute();
if ( !res ) {
Scheduler.get().scheduleDeferred( new ScheduledCommand() {
@Override
public void execute() {
launch();
}
} );
}
return res;
}
} );
}
@Override
public int scheduleDelay(int delayMs, final Handler<Void> handler) {
final String key = "" + (++timerId);
RepeatingCommand cmd = new RepeatingCommand() {
@Override
public boolean execute() {
if (timers.has(key)) {
timers.remove(key);
handler.handle(null);
}
return false;
}
};
timers.set(key, cmd);
com.google.gwt.core.client.Scheduler.get().scheduleFixedDelay(cmd, delayMs);
return timerId;
}
@Override
public int schedulePeriodic(int delayMs, final Handler<Void> handler) {
final String key = "" + (++timerId);
RepeatingCommand cmd = new RepeatingCommand() {
@Override
public boolean execute() {
if (timers.has(key)) {
handler.handle(null);
return true;
}
return false;
}
};
timers.set(key, cmd);
com.google.gwt.core.client.Scheduler.get().scheduleFixedPeriod(cmd, delayMs);
return timerId;
}
public ToastNotification(String messageText) {
setShowEdges(false);
setShowHeader(false);
setShowHeaderBackground(false);
setShowHeaderIcon(false);
setShowResizer(false);
setShowFooter(false);
setShowTitle(false);
setAlign(Alignment.CENTER);
setMargin(0);
setMembersMargin(3);
setPadding(0);
setBodyColor("white");
setBackgroundColor("white");
setBorder("1px solid DarkBlue");
setOverflow(Overflow.HIDDEN);
setAutoSize(true);
centerInPage();
setVertical(true);
HTMLFlow message = new HTMLFlow(AwesomeFactory.getIconHtml("info-circle", messageText));
message.setAlign(Alignment.CENTER);
message.setStyleName("contactingserver");
message.setLayoutAlign(Alignment.CENTER);
message.setLayoutAlign(VerticalAlignment.CENTER);
message.setBackgroundColor("white");
message.setHeight(50);
addItem(message);
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
ToastNotification.this.destroy();
return false;
}
}, Session.get().getConfigAsInt("gui.popup.timeout") * 1000);
}
public void hide() {
StyleUtils.removeStyle(this.getElement(), InputDatePicker.STYLE_SHOW);
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
InputDatePicker.this.setVisible(false);
RootPanel.get().remove(InputDatePicker.this);
return false;
}
}, 200);
}
public void changeVisibility(Visibility visibilityChange) {
Visibility order = visibilityChange;
if (order == Visibility.TOGGLE) {
order = this.visibilityChange == Visibility.HIDE ? Visibility.SHOW : Visibility.HIDE;
}
final Element toDisplayElement = this.getHoverWidget().getElement();
final Element target = this.getWidget().getElement();
final Element parent = target.getParentElement();
if (parent == null) {
return;
}
switch (order) {
case SHOW:
parent.insertAfter(toDisplayElement, target);
toDisplayElement.getStyle().setDisplay(Display.BLOCK);
this.resetPosition(toDisplayElement, this.getWidget(), this.placement);
StyleUtils.addStyle(this.getHoverWidget(), this.placement);
StyleUtils.addStyle(toDisplayElement, Visibility.SHOW);
break;
case HIDE:
StyleUtils.removeStyle(toDisplayElement, Visibility.SHOW);
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
toDisplayElement.getStyle().clearDisplay();
toDisplayElement.removeFromParent();
return false;
}
}, 200);
break;
default:
break;
}
this.visibilityChange = order;
}
private void schedule(int delay, final Visibility visibility) {
if (delay > 0) {
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
AbstractHover.this.changeVisibility(visibility);
return false;
}
}, delay);
} else {
this.changeVisibility(visibility);
}
}
public void doCollapse(final boolean collapse) {
if (collapse != this.collapsed) {
EventBus.get().fireEventFromSource(new CollapseEvent(CollapseHelper.this, collapse), CollapseHelper.this);
this.collapsableElement.getStyle().setHeight(this.collapsableElement.getOffsetHeight(), Unit.PX);
StyleUtils.removeStyle(this.collapsableElement, CollapseHelper.STYLE_COLLAPSE);
StyleUtils.removeStyle(this.collapsableElement, CollapseHelper.STYLE_VISIBLE);
StyleUtils.addStyle(this.collapsableElement, CollapseHelper.STYLE_COLLAPSING);
final int endHeight = collapse ? 0 : this.collapsableElement.getScrollHeight();
Scheduler.get().scheduleDeferred(new ScheduledCommand() {
@Override
public void execute() {
CollapseHelper.this.collapsableElement.getStyle().setHeight(endHeight, Unit.PX);
}
});
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
CollapseHelper.this.collapsableElement.getStyle().clearHeight();
StyleUtils.removeStyle(CollapseHelper.this.collapsableElement, CollapseHelper.STYLE_COLLAPSING);
StyleUtils.addStyle(CollapseHelper.this.collapsableElement, CollapseHelper.STYLE_COLLAPSE);
StyleUtils.toggleStyle(CollapseHelper.this.collapsableElement, CollapseHelper.STYLE_VISIBLE, !collapse);
return false;
}
}, 350);
this.collapsed = collapse;
}
}
private void handleCompleteJson(String reponseData) {
if (Strings.isNullOrEmpty(reponseData)) {
handleError("500", "Unable to post data");
}
JSONObject jsObject = JSONParser.parseLenient(reponseData).isObject();
final FileDto file = new FileDto();
file.setName(jsObject.get("name").isString().stringValue());
file.setExtension(jsObject.get("extension").isString().stringValue());
file.setMime(jsObject.get("mime").isString().stringValue());
file.setToken(jsObject.get("token").isString().stringValue());
file.setContentLength((long) jsObject.get("contentLength").isNumber().doubleValue());
if (this.uploadForm != null) {
this.uploadForm = this.uploadForm.destroy();
}
this.sendRequest = null;
this.fileId = null;
this.progressBar.edit(this.progressBar.getMax());
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
InputFile.this.edit(file);
return false;
}
}, this.params.inputFileProgressHideDelay());
}
public void hide() {
StyleUtils.removeStyle(ModalBackdrop.this, Modal.STYLE_VISIBLE);
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
RootPanel.get().remove(ModalBackdrop.this);
return false;
}
}, 100);
}
public void hide() {
StyleUtils.removeStyle(this, Alert.STYLE_VISIBLE);
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
Alert.this.removeFromParent();
Alert.this.fireEvent(new AlertDismissEvent(Alert.this));
return false;
}
}, 150);
}
@EventHandler
void onContactsScreenOpened(ContactScreenOpenedEvent event) {
// Pretend to make a server request
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
LinkedList<String> results = new LinkedList<String>();
results.add("John Doe");
results.add("Jane Doe");
eventBus.fireEvent(new ContactsLoadedEvent(results));
return false;
}
}, 1000);
}
private void addFormEditor(YoungAndroidFormNode formNode) {
final YaFormEditor newFormEditor = new YaFormEditor(this, formNode);
final String formName = formNode.getFormName();
OdeLog.log("Adding form editor for " + formName);
if (editorMap.containsKey(formName)) {
// This happens if the blocks editor was already added.
editorMap.get(formName).formEditor = newFormEditor;
} else {
EditorSet editors = new EditorSet();
editors.formEditor = newFormEditor;
editorMap.put(formName, editors);
}
final Command afterLoadCommand = new Command() {
@Override
public void execute() {
int pos = Collections.binarySearch(fileIds, newFormEditor.getFileId(),
getFileIdComparator());
if (pos < 0) {
pos = -pos - 1;
}
insertFileEditor(newFormEditor, pos);
if (isScreen1(formName)) {
screen1FormLoaded = true;
if (readyToShowScreen1()) {
OdeLog.log("YaProjectEditor.addFormEditor.loadFile.execute: switching to screen "
+ formName + " for project " + newFormEditor.getProjectId());
Ode.getInstance().getDesignToolbar().switchToScreen(newFormEditor.getProjectId(),
formName, DesignToolbar.View.FORM);
}
}
loadBlocksEditor(formName);
}
};
if (!isScreen1(formName) && !screen1FormLoaded) {
// Defer loading other screens until Screen1 is loaded. Otherwise we can end up in an
// inconsistent state during project upgrades with Screen1-only properties.
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
if (screen1FormLoaded) {
newFormEditor.loadFile(afterLoadCommand);
return false;
} else {
return true;
}
}
}, 100);
} else {
newFormEditor.loadFile(afterLoadCommand);
}
}
/**
* Load a stylesheet and notify a listener when the stylesheet is loaded.
* Calling this method when the stylesheet is currently loading or already
* loaded doesn't cause the stylesheet to be loaded again, but the listener
* will still be notified when appropriate.
*
* @param stylesheetUrl
* the url of the stylesheet to load
* @param resourceLoadListener
* the listener that will get notified when the stylesheet is
* loaded
*/
public void loadStylesheet(final String stylesheetUrl,
final ResourceLoadListener resourceLoadListener) {
final String url = WidgetUtil.getAbsoluteUrl(stylesheetUrl);
final ResourceLoadEvent event = new ResourceLoadEvent(this, url);
if (loadedResources.has(url)) {
if (resourceLoadListener != null) {
resourceLoadListener.onLoad(event);
}
return;
}
if (addListener(url, resourceLoadListener, loadListeners)) {
LinkElement linkElement = getDocument().createLinkElement();
linkElement.setRel("stylesheet");
linkElement.setType("text/css");
linkElement.setHref(url);
if (BrowserInfo.get().isSafariOrIOS()) {
// Safari doesn't fire any events for link elements
// See http://www.phpied.com/when-is-a-stylesheet-really-loaded/
Scheduler.get().scheduleFixedPeriod(new RepeatingCommand() {
private final Duration duration = new Duration();
@Override
public boolean execute() {
int styleSheetLength = getStyleSheetLength(url);
if (getStyleSheetLength(url) > 0) {
fireLoad(event);
return false; // Stop repeating
} else if (styleSheetLength == 0) {
// "Loaded" empty sheet -> most likely 404 error
fireError(event);
return true;
} else if (duration.elapsedMillis() > 60 * 1000) {
fireError(event);
return false;
} else {
return true; // Continue repeating
}
}
}, 10);
} else {
addOnloadHandler(linkElement, new StyleSheetLoadListener(url),
event);
if (BrowserInfo.get().isOpera()) {
// Opera onerror never fired, assume error if no onload in x
// seconds
new Timer() {
@Override
public void run() {
if (!loadedResources.has(url)) {
fireError(event);
}
}
}.schedule(5 * 1000);
}
}
getHead().appendChild(linkElement);
}
}
public void goTo(int itemIndex) {
if (itemIndex == this.currentIndex || this.sliding) {
return;
}
this.sliding = true;
final int newItemIndex;
if (itemIndex < 0) {
newItemIndex = this.carouselItems.size() - 1;
} else if (itemIndex >= this.carouselItems.size()) {
newItemIndex = 0;
} else {
newItemIndex = itemIndex;
}
StyleUtils.addStyle(this.carouselItemsIndicators.get(this.currentIndex), ItemType.DEFAULT);
boolean goLeft = newItemIndex > this.currentIndex;
final CarouselItem curentItem = this.carouselItems.get(this.currentIndex);
final CarouselItem newItem = this.carouselItems.get(newItemIndex);
StyleUtils.addStyle(newItem, goLeft ? ItemType.NEXT : ItemType.PREVIOUS);
// hook to force width evaluation (cf original bootstrap JS file)
this.carouselItems.get(newItemIndex).getOffsetWidth();
StyleUtils.addStyle(newItem, goLeft ? LeftRightType.LEFT : LeftRightType.RIGHT);
StyleUtils.addStyle(curentItem, goLeft ? LeftRightType.LEFT : LeftRightType.RIGHT);
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
StyleUtils.removeStyle(curentItem, ItemType.DEFAULT);
StyleUtils.removeStyle(newItem, ItemType.ACTIVE);
StyleUtils.addStyle(curentItem, ItemType.DEFAULT);
StyleUtils.addStyle(newItem, ItemType.ACTIVE);
StyleUtils.cleanEnumStyle(curentItem.getElement(), LeftRightType.class);
StyleUtils.cleanEnumStyle(newItem.getElement(), LeftRightType.class);
StyleUtils.addStyle(Carousel.this.carouselItemsIndicators.get(newItemIndex), ItemType.ACTIVE);
Carousel.this.currentIndex = newItemIndex;
Carousel.this.sliding = false;
return false;
}
}, 600);
}