Java Code Examples for com.google.gwt.dom.client.Element#removeChild()

protected void checkRequiredIndicatorVisible() {
    if (requiredIndicatorVisible == null) {
        Element requiredIndicatorFake = DOM.createDiv();
        requiredIndicatorFake.setClassName(REQUIRED_INDICATOR);
        requiredIndicatorFake.getStyle().setPosition(Style.Position.ABSOLUTE);

        String rootPanelId = ac.getConfiguration().getRootPanelId();
        Element rootPanel = Document.get().getElementById(rootPanelId);
        rootPanel.appendChild(requiredIndicatorFake);

        String display = new ComputedStyle(requiredIndicatorFake).getProperty("display");

        requiredIndicatorVisible = !"none".equals(display);

        rootPanel.removeChild(requiredIndicatorFake);
    }
}
 

/**
 * Removes any previous emphasis made by drag&drop
 */
protected void deEmphasis() {
    if (currentlyEmphasised != null
            && tabBar.getElement().isOrHasChild(currentlyEmphasised)) {
        Widget w = Util.findWidget(currentlyEmphasised, null);

        currentlyEmphasised.removeClassName(CLASSNAME_NEW_TAB_LEFT);
        currentlyEmphasised.removeClassName(CLASSNAME_NEW_TAB_RIGHT);
        currentlyEmphasised.removeClassName(CLASSNAME_NEW_TAB_CENTER);

        if (w == tabBar) {
            // Over spacer
            Element spacerContent = spacer.getChild(0).cast();
            spacerContent.removeChild(newTab);
        }

        currentlyEmphasised = null;
    }
}
 

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();
    }
 

private static int getVerticalScrollbarWidth() {
  // We only calculate the vertical scroll bar width once, then we store it in the static field
  // verticalScrollbarWidth. If the field is non-zero, we don't need to calculate it again.
  if (verticalScrollbarWidth == 0) {
    // The following code will calculate (on the fly) the width of a vertical scroll bar.
    // We'll create two divs, one inside the other and add the outer div to the document body,
    // but off-screen where the user won't see it.
    // We'll measure the width of the inner div twice: (first) when the outer div's vertical
    // scrollbar is hidden and (second) when the outer div's vertical scrollbar is visible.
    // The width of inner div will be smaller when outer div's vertical scrollbar is visible.
    // By subtracting the two measurements, we can calculate the width of the vertical scrollbar.

    // I used code from the following websites as reference material:
    // http://jdsharp.us/jQuery/minute/calculate-scrollbar-width.php
    // http://www.fleegix.org/articles/2006-05-30-getting-the-scrollbar-width-in-pixels

    Document document = Document.get();

    // Create an outer div.
    DivElement outerDiv = document.createDivElement();
    Style outerDivStyle = outerDiv.getStyle();
    // Use absolute positioning and set the top/left so that it is off-screen.
    // We don't want the user to see anything while we do this calculation.
    outerDivStyle.setProperty("position", "absolute");
    outerDivStyle.setProperty("top", "-1000px");
    outerDivStyle.setProperty("left", "-1000px");
    // Set the width and height of the outer div to a fixed size in pixels.
    outerDivStyle.setProperty("width", "100px");
    outerDivStyle.setProperty("height", "50px");
    // Hide the outer div's scrollbar by setting the "overflow" property to "hidden".
    outerDivStyle.setProperty("overflow", "hidden");

    // Create an inner div and put it inside the outer div.
    DivElement innerDiv = document.createDivElement();
    Style innerDivStyle = innerDiv.getStyle();
    // Set the height of the inner div to be 4 times the height of the outer div so that a
    // vertical scrollbar will be necessary (but hidden for now) on the outer div.
    innerDivStyle.setProperty("height", "200px");
    outerDiv.appendChild(innerDiv);

    // Temporarily add the outer div to the document body. It's off-screen so the user won't
    // actually see anything.
    Element bodyElement = document.getElementsByTagName("body").getItem(0);
    bodyElement.appendChild(outerDiv);

    // Get the width of the inner div while the outer div's vertical scrollbar is hidden.
    int widthWithoutScrollbar = innerDiv.getOffsetWidth();
    // Show the outer div's vertical scrollbar by setting the "overflow" property to "auto".
    outerDivStyle.setProperty("overflow", "auto");
    // Now, get the width of the inner div while the vertical scrollbar is visible.
    int widthWithScrollbar = innerDiv.getOffsetWidth();

    // Remove the outer div from the document body.
    bodyElement.removeChild(outerDiv);

    // Calculate the width of the vertical scrollbar by subtracting the two widths.
    verticalScrollbarWidth = widthWithoutScrollbar - widthWithScrollbar;
  }

  return verticalScrollbarWidth;
}
 

private void swapRows(int r0, int r1) {
	if (r0 == r1) return;
	if (r0 > r1) {
		swapRows(r1, r0);
	} else { // r0 < r1
		Element body = getBodyElement();
		Element a = DOM.getChild(body, r0);
		Element b = DOM.getChild(body, r1);
		body.removeChild(a);
		body.removeChild(b);
		DOM.insertChild(body, b, r0);
		DOM.insertChild(body, a, r1);
	}
}
 

private void maybeStripMarker(Node node, Element parent, boolean leading) {
  if (node == null) {
    logEndNotFound("node is null");
    return;
  }
  if (DomHelper.isTextNode(node)) {
    Text textNode = node.cast();
    String text = textNode.getData();
    if (!text.isEmpty()) {
      if (leading) {
        if (text.charAt(0) == MARKER_CHAR) {
          textNode.setData(text.substring(1));
        }
      } else {
        if (text.charAt(text.length() - 1) == MARKER_CHAR) {
          textNode.setData(text.substring(0, text.length() - 1));
        } else {
          logEndNotFound("last character is not marker");
        }
      }
    } else {
      logEndNotFound("text node is empty");
    }
    if (textNode.getData().isEmpty()) {
      parent.removeChild(textNode);
    }
  } else {
    // In some cases, Safari will put the marker inside of a div, so this
    // traverses down the left or right side of the tree to find it.
    // For example: x<div><span>pasted</span>x</div>
    maybeStripMarker(leading ? node.getFirstChild() : node.getLastChild(), node.<Element> cast(),
        leading);
  }
}
 

@Override
public void clear()
{
    super.clear();

    // we need special handling to remove any OPTGROUP elements
    Element elm = getElement();
    while (elm.hasChildNodes())
    {
        elm.removeChild(elm.getFirstChild());
    }
}
 

@Override
public void remove() {
    Element select = getElement();
    while (count-- > 0) {
        Element option = select.getFirstChildElement();
        if (option != null) {
            select.removeChild(option);
        }
    }
    count = 0;
}
 

private void maybeStripMarker(Node node, Element parent, boolean leading) {
  if (node == null) {
    logEndNotFound("node is null");
    return;
  }
  if (DomHelper.isTextNode(node)) {
    Text textNode = node.cast();
    String text = textNode.getData();
    if (!text.isEmpty()) {
      if (leading) {
        if (text.charAt(0) == MARKER_CHAR) {
          textNode.setData(text.substring(1));
        }
      } else {
        if (text.charAt(text.length() - 1) == MARKER_CHAR) {
          textNode.setData(text.substring(0, text.length() - 1));
        } else {
          logEndNotFound("last character is not marker");
        }
      }
    } else {
      logEndNotFound("text node is empty");
    }
    if (textNode.getData().isEmpty()) {
      parent.removeChild(textNode);
    }
  } else {
    // In some cases, Safari will put the marker inside of a div, so this
    // traverses down the left or right side of the tree to find it.
    // For example: x<div><span>pasted</span>x</div>
    maybeStripMarker(leading ? node.getFirstChild() : node.getLastChild(), node.<Element> cast(),
        leading);
  }
}
 

private void moveRow(Element tr, Element before) {
	Element body = DOM.getParent(tr);
	body.removeChild(tr);
	DOM.insertBefore(body, tr, before);
}
 

/**
 * Remove all children from an element
 * @param element
 */
public static void emptyElement(Element element) {
  while (element.getFirstChild() != null) {
    element.removeChild(element.getFirstChild());
  }
}
 

/**
 * Remove all children from an element
 * @param element
 */
public static void emptyElement(Element element) {
  while (element.getFirstChild() != null) {
    element.removeChild(element.getFirstChild());
  }
}