import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
public static void load(Chronoscope.URLResolver resolver, final String libName,
      final String version, final Command callback) {
    if (!injectedLoader) {
      final ScriptElement se = Document.get().createScriptElement();
//      se.setSrc(intrinsics.getCachedUrl("http://www.google.com/jsapi?callback=" + JSAPI_CALLBACK));
      se.setSrc("http://www.google.com/jsapi?callback=" + JSAPI_CALLBACK);
      
      final HeadElement he = HeadElement.as(Document.get().getElementsByTagName("head").getItem(0));
      exportHandler(new Command() {

        public void execute() {
          injectedLoader=true;
          he.removeChild(se);
          nativeLoad(libName, version, callback);
        }
      });
     
      he.appendChild(se);
    } else {
      nativeLoad(libName, version, callback);
    }
  }
 

import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
/**
 * Styles a multi-row selection with the number of elements.
 *
 * @param drag
 *            the current drag event holding the context.
 */
void setMultiRowDragDecoration(VDragEvent drag) {
    Widget widget = drag.getTransferable().getDragSource().getWidget();

    if (widget instanceof VScrollTable) {
        VScrollTable table = (VScrollTable) widget;
        int rowCount = table.selectedRowKeys.size();

        Element dragCountElement = Document.get().getElementById(SP_DRAG_COUNT);
        if (rowCount > 1 && table.selectedRowKeys.contains(table.focusedRow.getKey())) {
            if (dragCountElement == null) {
                dragCountElement = Document.get().createStyleElement();
                dragCountElement.setId(SP_DRAG_COUNT);
                HeadElement head = HeadElement.as(Document.get().getElementsByTagName(HeadElement.TAG).getItem(0));
                head.appendChild(dragCountElement);
            }
            SafeHtml formattedCssStyle = getDraggableTemplate().multiSelectionStyle(determineActiveTheme(drag),
                    String.valueOf(rowCount));
            StyleElement dragCountStyleElement = StyleElement.as(dragCountElement);
            dragCountStyleElement.setInnerSafeHtml(formattedCssStyle);
        } else if (dragCountElement != null) {
            dragCountElement.removeFromParent();
        }
    }
}
 

import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
public void onModuleLoad() {
	final String linkTxt = Resources.INSTANCE.linkTxt().getText();
	final Document document = Document.get();
	HeadElement headElement = document.getHead();
	if (headElement == null) {
		headElement = document.createHeadElement();
		document.appendChild(headElement);
	}
	LinkElement linkElement = document.createLinkElement();
	linkElement.setType("text/css");
	linkElement.setRel("stylesheet");
	linkElement.setHref(linkTxt);
	headElement.appendChild(linkElement);
}
 

import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
private HeadElement getHead() {
    if(this.head == null) {
        Element element = Document.get().getElementsByTagName(HEAD_TAG_NAME).getItem(0);
        assert element != null : ERROR_HEAD_NOT_FOUND;
        this.head = HeadElement.as(element);
    }
    return this.head;
}
 

import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
private static HeadElement getHead() {
    if (head == null) {
        Element element = Document.get().getElementsByTagName("head").getItem(0);
        assert element != null : "HTML Head element required";
        head = HeadElement.as(element);
    }
    return head;
}
 

import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
private static HeadElement getHead() {
    if (head == null) {
        Element element = Document.get().getElementsByTagName("head").getItem(0);
        assert element != null : "HTML Head element required";
        HeadElement headElement = HeadElement.as(element);
        head = headElement;
    }
    return head;
}
 

import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
/**
 * Gets the head tag element.
 *
 * @return the head tag element
 */
protected HeadElement getHead() {
	if (this.head == null) {
		Element elt = Document.get().getElementsByTagName("head").getItem(0);
		assert elt != null : "The host HTML page does not have a <head> element" + " which is required by this injector";
		this.head = HeadElement.as(elt);
	}
	return this.head;
}
 

import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
public static void injectStyleSheet(String href, String id) {
	HeadElement head = getHead();
	LinkElement element = createLinkElement();
	element.setHref(href);
	element.setId(id);
	head.appendChild(element);
}
 

import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
private static HeadElement getHead() {
	if (head == null) {
		Element element = Document.get().getElementsByTagName("head")
				.getItem(0);
		assert element != null : "HTML Head element required";
		head = HeadElement.as(element);
	}
	return head;
}
 

import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
public static void inject(String javascript) {

		HeadElement head = getHead();
		new Timer() {

			public void run() {
				// goJsPlumb();
				goJS();
			}
		}.schedule(1);

		ScriptElement element = createScriptElement();
		element.setText(javascript);
		head.appendChild(element);
	}
 

import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
private static HeadElement getHead() {
	if (head == null) {
		Element element = Document.get().getElementsByTagName("head").getItem(0);
		assert element != null : "HTML Head element required";
		HeadElement head = HeadElement.as(element);
		ESBJavaScriptInjector.head = head;
	}
	return ESBJavaScriptInjector.head;
}
 

import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
private static HeadElement getHead() {
	if (head == null) {
		Element element = Document.get().getElementsByTagName("head")
		                          .getItem(0);
		assert element != null : "HTML Head element required";
		HeadElement head = HeadElement.as(element);
		JSLibInjector.head = head;
	}
	return JSLibInjector.head;
}
 

import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
private static HeadElement getHead() {
	if (head == null) {
		Element element = Document.get().getElementsByTagName("head").getItem(0);
		assert element != null : "HTML Head element required";
		HeadElement head = HeadElement.as(element);
		PlusOne.head = head;
	}
	return PlusOne.head;
}
 

import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
public static void intject(String javaScript) {
    HeadElement head = getHead();
    ScriptElement element = createScriptElement();
    element.setText(javaScript);
    head.appendChild(element);
}
 

import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
public static void inject(String javascript) {
	HeadElement head = getHead();
	ScriptElement element = createScriptElement();
	element.setText(javascript);
	head.appendChild(element);
}
 

import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
/**
 * Injects the css url code into a
 * {@code <link rel="stylesheet" href="...." />} element in the document
 * header.
 * 
 * @param javascript
 *            the JavaScript code
 */
public static void injectStyleSheet(String href) {
    HeadElement head = getHead();
    LinkElement element = createLinkElement();
    element.setHref(href);
    head.appendChild(element);
}
 

import com.google.gwt.dom.client.HeadElement; //导入依赖的package包/类
/**
 * Convenience method for getting the document's head element.
 *
 * @return the document's head element
 */
private native HeadElement getHeadElement() /*-{
  return $doc.getElementsByTagName("head")[0];
}-*/;