com.google.gwt.dom.client.Element.getFirstChild()方法的使用及代码示例

x33g5p2x  于2022-01-19 转载在 其他  
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本文整理了Java中com.google.gwt.dom.client.Element.getFirstChild()方法的一些代码示例，展示了Element.getFirstChild()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。Element.getFirstChild()方法的具体详情如下：
包路径：com.google.gwt.dom.client.Element
类名称：Element
方法名：getFirstChild

Element.getFirstChild介绍

[英]The first child of element this element. If there is no such element, this returns null.
[中]此元素的第一个子元素。如果没有这样的元素，则返回null。

代码示例

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

/**
 * Get the input element in edit mode.
 */
private InputElement getInputElement(Element parent) {
 return parent.getFirstChild().<InputElement> cast();
}

代码示例来源：origin: com.extjs/gxt

protected void doAllWidths(List<Integer> ws, int tw) {
 if (!enableGrouping) return;
 NodeList<Element> gs = getGroups();
 for (int i = 0, len = gs.getLength(); i < len; i++) {
  Element s = gs.getItem(i).getChildNodes().getItem(2).cast();
  El.fly(s).setWidth(tw);
  if (s.getFirstChild() == null) return;
  El.fly(s.getFirstChildElement()).setWidth(tw);
  TableSectionElement tse = s.getFirstChildElement().cast();
  NodeList<Element> cells = tse.getRows().getItem(0).getChildNodes().cast();
  for (int j = 0, wlen = ws.size(); j < wlen; j++) {
   El.fly(cells.getItem(j)).setWidth(ws.get(j));
  }
 }
}

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

/**
  * Update the view data based on the current value.
  *
  * @param parent the parent element
  * @param viewData the {@link ViewData} object to update
  * @param isEditing true if in edit mode
  * @return the new value
  */
 private String updateViewData(Element parent, ViewData viewData,
   boolean isEditing) {
  InputElement input = (InputElement) parent.getFirstChild();
  String value = input.getValue();
  viewData.setText(value);
  viewData.setEditing(isEditing);
  return value;
 }
}

代码示例来源：origin: org.eclipse.che.core/che-core-ide-ui

public void onElementChanged(NodeDescriptor node, Element element) {
 Element el = getRootContainer(node).getFirstChildElement();
 if (el == null) {
  return;
 }
 el.removeFromParent();
 getRootContainer(node).insertFirst(element.getFirstChild());
 node.setNodeContainerElement(null);
 node.setJointContainerElement(null);
 onSelectChange(node.getNode(), tree.getSelectionModel().isSelected(node.getNode()));
}

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

/**
 * Creates an HTML IFRAME element with a name.
 * 
 * @param name the name of the frame, which must contain at least one
 *          non-whitespace character and must not contain reserved HTML markup
 *          characters such as '<code>&lt;</code>', '<code>&gt;</code>',
 *          or '<code>&amp;</code>'
 * @return the newly-created element
 * @throws IllegalArgumentException if the supplied name is not allowed 
 */
private static IFrameElement createIFrame(String name) {
 if (name == null || !isValidName(name.trim())) {
  throw new IllegalArgumentException(
    "expecting one or more non-whitespace chars with no '<', '>', or '&'");
 }
 // Use innerHTML to implicitly create the <iframe>. This is necessary
 // because most browsers will not respect a dynamically-set iframe name.
 Element div = DOM.createDiv();
 div.setInnerSafeHtml(IFrameTemplate.INSTANCE.get(name));
 return div.getFirstChild().cast();
}

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

@Override
public void onBrowserEvent(Context context, Element parent, String value,
  NativeEvent event, ValueUpdater<String> valueUpdater) {
 super.onBrowserEvent(context, parent, value, event, valueUpdater);
 String type = event.getType();
 if (BrowserEvents.CHANGE.equals(type)) {
  Object key = context.getKey();
  SelectElement select = parent.getFirstChild().cast();
  String newValue = options.get(select.getSelectedIndex());
  setViewData(key, newValue);
  finishEditing(parent, newValue, key, valueUpdater);
  if (valueUpdater != null) {
   valueUpdater.update(newValue);
  }
 }
}

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

&& event.getKeyCode() == KeyCodes.KEY_ENTER;
if (BrowserEvents.CHANGE.equals(type) || enterPressed) {
 InputElement input = parent.getFirstChild().cast();
 Boolean isChecked = input.isChecked();

代码示例来源：origin: net.wetheinter/gwt-user

/**
 * Get the input element in edit mode.
 */
private InputElement getInputElement(Element parent) {
 return parent.getFirstChild().<InputElement> cast();
}

代码示例来源：origin: com.vaadin.external.gwt/gwt-user

/**
 * Get the input element in edit mode.
 */
private InputElement getInputElement(Element parent) {
 return parent.getFirstChild().<InputElement> cast();
}

代码示例来源：origin: bedatadriven/activityinfo

/**
 * Get the input element in edit mode.
 */
private InputElement getInputElement(Element parent) {
 return parent.getFirstChild().<InputElement> cast();
}

代码示例来源：origin: org.eclipse.che.core/che-core-ide-ui

private boolean isRowRendered(int i, List<Node> visible) {
 Element e = view.getRootContainer(getNodeDescriptor(visible.get(i)));
 return e != null && e.getFirstChild().hasChildNodes();
}

代码示例来源：origin: org.eagle-i/eagle-i-datatools-sweet-gwt

/**
 * Need to do some additional clean up to really clear the list
 */
public void clear() {
  super.clear();
  // remove the option group elements
  Element elm = getElement();
  while (elm.hasChildNodes()) {
    elm.removeChild(elm.getFirstChild());
  }
  
  groupMap.clear();
}

代码示例来源：origin: com.vaadin.external.gwt/gwt-user

/**
  * Update the view data based on the current value.
  *
  * @param parent the parent element
  * @param viewData the {@link ViewData} object to update
  * @param isEditing true if in edit mode
  * @return the new value
  */
 private String updateViewData(Element parent, ViewData viewData,
   boolean isEditing) {
  InputElement input = (InputElement) parent.getFirstChild();
  String value = input.getValue();
  viewData.setText(value);
  viewData.setEditing(isEditing);
  return value;
 }
}

代码示例来源：origin: net.wetheinter/gwt-user

@Override
public void onBrowserEvent(Context context, Element parent, String value,
  NativeEvent event, ValueUpdater<String> valueUpdater) {
 super.onBrowserEvent(context, parent, value, event, valueUpdater);
 String type = event.getType();
 if (BrowserEvents.CHANGE.equals(type)) {
  Object key = context.getKey();
  SelectElement select = parent.getFirstChild().cast();
  String newValue = options.get(select.getSelectedIndex());
  setViewData(key, newValue);
  finishEditing(parent, newValue, key, valueUpdater);
  if (valueUpdater != null) {
   valueUpdater.update(newValue);
  }
 }
}

代码示例来源：origin: com.vaadin.external.gwt/gwt-user

@Override
public void onBrowserEvent(Context context, Element parent, String value,
  NativeEvent event, ValueUpdater<String> valueUpdater) {
 super.onBrowserEvent(context, parent, value, event, valueUpdater);
 String type = event.getType();
 if (BrowserEvents.CHANGE.equals(type)) {
  Object key = context.getKey();
  SelectElement select = parent.getFirstChild().cast();
  String newValue = options.get(select.getSelectedIndex());
  setViewData(key, newValue);
  finishEditing(parent, newValue, key, valueUpdater);
  if (valueUpdater != null) {
   valueUpdater.update(newValue);
  }
 }
}

代码示例来源：origin: com.extjs/gxt

/**
 * Returns the grid's &lt;TD> HtmlElement at the specified coordinates.
 * 
 * @param row the row index in which to find the cell
 * @param col the column index of the cell
 * @return the &lt;TD> at the specified coordinates
 */
public Element getCell(int row, int col) {
 // ROW DIV TABLE TR TD
 Element rowEl = getRow(row);
 return (Element) ((rowEl != null && rowEl.hasChildNodes())
   ? rowEl.getFirstChild().getFirstChild().getFirstChild().getChildNodes().getItem(col) : null);
}

代码示例来源：origin: com.extjs/gxt

private void updateGroupWidths() {
 if (!enableGrouping || ds.getCount() < 1) {
  return;
 }
 String tw = Math.max(cm.getTotalWidth(), el.dom.getOffsetWidth() - getScrollAdjust()) + "px";
 NodeList<Element> gs = getGroups();
 for (int i = 0, len = gs.getLength(); i < len; i++) {
  Element e = gs.getItem(i).getFirstChild().cast();
  e.getStyle().setProperty("width", tw);
 }
}

代码示例来源：origin: org.n52.sensorweb/sensorwebclient-ui

public static void continueStartup() {
  // init handlers before throwing events
  SosDataManager.getDataManager();
  new SOSController();
  if (ClientUtils.isSesEnabled()) {
    new SesController();
  }
  View.getView();
  Element element = Document.get().getElementById("loadingWrapper");
  while (element.hasChildNodes()) {
    element.removeChild(element.getFirstChild());
  }
  Application.finishStartup();
}

代码示例来源：origin: SwellRT/swellrt

protected void assertStructure(ContentElement e,
  ContentElement parent, ContentNode prev, ContentNode next,
  ContentNode first, ContentNode last) {
 assertStructure(e, parent, prev, next);
 assertSame(first, c.getFirstChild(e));
 assertSame(last, c.getLastChild(e));
 assertSame(first == null ? null : first.getImplNodelet(), e.getImplNodelet().getFirstChild());
 assertSame(last == null ? null : last.getImplNodelet(), e.getImplNodelet().getLastChild());
}

代码示例来源：origin: apache/incubator-wave

protected void assertStructure(ContentElement e,
  ContentElement parent, ContentNode prev, ContentNode next,
  ContentNode first, ContentNode last) {
 assertStructure(e, parent, prev, next);
 assertSame(first, c.getFirstChild(e));
 assertSame(last, c.getLastChild(e));
 assertSame(first == null ? null : first.getImplNodelet(), e.getImplNodelet().getFirstChild());
 assertSame(last == null ? null : last.getImplNodelet(), e.getImplNodelet().getLastChild());
}

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