本文整理了Java中com.google.gwt.user.client.ui.Widget.isAttached()方法的一些代码示例，展示了Widget.isAttached()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Widget.isAttached()方法的具体详情如下：
包路径：com.google.gwt.user.client.ui.Widget
类名称：Widget
方法名：isAttached

Widget.isAttached介绍

[英]Determines whether this widget is currently attached to the browser's document (i.e., there is an unbroken chain of widgets between this widget and the underlying browser document).
[中]确定此小部件当前是否附加到浏览器的文档（即，此小部件和基础浏览器文档之间有一个完整的小部件链）。

代码示例

代码示例来源：origin: com.google.gwt/gwt-servlet

@Override
public boolean isAttached() {
 if (widget != null) {
  return widget.isAttached();
 }
 return false;
}

代码示例来源：origin: com.google.gwt/gwt-servlet

public void execute(Widget w) {
  if (w.isAttached()) {
   w.onDetach();
  }
 }
};

代码示例来源：origin: com.google.gwt/gwt-servlet

if (parent == null) {
 try {
  if (oldParent != null && oldParent.isAttached()) {
   onDetach();
   assert !isAttached() : "Failure of " + this.getClass().getName()
     + " to call super.onDetach()";
 if (parent.isAttached()) {
  onAttach();
  assert isAttached() : "Failure of " + this.getClass().getName()
    + " to call super.onAttach()";

代码示例来源：origin: com.google.gwt/gwt-servlet

@Override
void replaceElement(com.google.gwt.dom.client.Element elem) {
 if (isAttached()) {
  // Remove old event listener to avoid leaking. onDetach will not do this
  // for us, because it is only called when the widget itself is detached
  // from the document.
  DOM.setEventListener(getElement(), null);
 }
 super.replaceElement(elem);
 if (isAttached()) {
  // Hook the event listener back up on the new element. onAttach will not
  // do this for us, because it is only called when the widget itself is
  // attached to the document.
  DOM.setEventListener(getElement(), this);
 }
}

代码示例来源：origin: com.google.gwt/gwt-servlet

/**
 * Convenience method to replace all children of a Widget.
 * 
 * @param widget the widget who's contents will be replaced
 * @param childContainer the container that holds the contents
 * @param html the html to set
 */
static void replaceAllChildren(Widget widget, Element childContainer, SafeHtml html) {
 // If the widget is not attached, attach an event listener so we can catch
 // synchronous load events from cached images.
 if (!widget.isAttached()) {
  DOM.setEventListener(widget.getElement(), widget);
 }
 // Render the HTML.
 childContainer.setInnerSafeHtml(CellBasedWidgetImpl.get().processHtml(html));
 // Detach the event listener.
 if (!widget.isAttached()) {
  DOM.setEventListener(widget.getElement(), null);
 }
}

代码示例来源：origin: com.google.gwt/gwt-servlet

if (!isAttached()) {
 throw new IllegalStateException(
   "Should only call onDetach when the widget is attached to the browser's document");

代码示例来源：origin: com.google.gwt/gwt-servlet

if (isAttached()) {
 throw new IllegalStateException(
   "Should only call onAttach when the widget is detached from the browser's document");

代码示例来源：origin: com.google.gwt/gwt-servlet

if (widget.asWidget().isAttached()) {
 setupBustClickHandler();

代码示例来源：origin: gwtbootstrap/gwt-bootstrap

public void setDefaultOpen(boolean dafaultOpen) {
  this.dafaultOpen = dafaultOpen;
  
  if(widget != null && !widget.isAttached()) {
    widget.setStyleName(Constants.IN , dafaultOpen);
  }
  
}

代码示例来源：origin: com.extjs/gxt

public static void doDetach(Widget widget) {
 if (widget != null && widget.isAttached()) {
  doDetachNative(widget);
 }
}

代码示例来源：origin: com.googlecode.gwt-test-utils/gwt-test-utils

protected static void onSetHTML(Object hasHTML, String newHTML, String oldHTML) {
  if (!(hasHTML instanceof Widget) || ((Widget) hasHTML).isAttached()
      || (hasHTML instanceof PopupPanel)) {
    onSetIndex(hasHTML, newHTML, oldHTML, INSTANCE.indexedObjectFinder.mapByHTML);
  }
}

代码示例来源：origin: com.haulmont.cuba/cuba-web-toolkit

protected boolean isAttached() {
  AbstractComponentConnector connectorTarget = (AbstractComponentConnector) target;
  return connectorTarget != null
      && connectorTarget.getWidget() != null
      && connectorTarget.getWidget().isAttached();
}

代码示例来源：origin: GwtMaterialDesign/gwt-material

public void close() {
  String id = getId();
  if (id != null && !id.isEmpty()) {
    Widget toast = RootPanel.get(id);
    if (toast != null && toast.isAttached()) {
      element.remove();
    }
  }
}

代码示例来源：origin: com.github.gwtmaterialdesign/gwt-material

public void close() {
  String id = getId();
  if (id != null && !id.isEmpty()) {
    Widget toast = RootPanel.get(id);
    if (toast != null && toast.isAttached()) {
      element.remove();
    }
  }
}

代码示例来源：origin: GwtMaterialDesign/gwt-material

public boolean isOpen() {
  String id = getId();
  if (id != null && !id.isEmpty()) {
    Widget toast = RootPanel.get(id);
    return toast.isAttached() && toast.isVisible();
  }
  return false;
}

代码示例来源：origin: GwtMaterialDesign/gwt-material

public void destroyWidget() {
  if(widget != null && widget.isAttached()) {
    widget.removeFromParent();
  }
  widget = null;
}

代码示例来源：origin: GwtMaterialDesign/gwt-material

@Override
public void setUiObject(H uiObject) {
  super.setUiObject(uiObject);
  if (tooltip != null) {
    tooltip.setWidget(uiObject);
  } else if (uiObject.isAttached()) {
    initialize();
  }
}

代码示例来源：origin: GwtMaterialDesign/gwt-material

public T getWidget(boolean tryAttach) {
  if(widget == null) {
    widget = createWidget();
  }
  if(tryAttach && !widget.isAttached()) {
    attachWidget();
  }
  return widget;
}

代码示例来源：origin: com.github.gwtmaterialdesign/gwt-material

public T getWidget(boolean tryAttach) {
  if(widget == null) {
    widget = createWidget();
  }
  if(tryAttach && !widget.isAttached()) {
    attachWidget();
  }
  return widget;
}

代码示例来源：origin: GwtMaterialDesign/gwt-material

@Override
public void setTooltip(String tooltip, String... classes) {
  setTooltip(tooltip);
  if (this.tooltip.getWidget().isAttached()) {
    addTooltipClass(classes);
  } else {
    this.tooltip.getWidget().addAttachHandler(event -> addTooltipClass(classes));
  }
}