How to use com.google.gwt.user.client

@Override
public boolean openURI (String URI) {
  if (config.openURLInNewWindow) {
    Window.open(URI, "_blank", null);
  } else {
    Window.Location.assign(URI);
  }
  return true;
}

  private void updateTextStyle (int percent) {
    // Set the style depending on the size of the bar
    if (percent < 50) {
      DOM.setElementProperty(textElement, "className", textClassName + " " + textFirstHalfClassName);
    } else {
      DOM.setElementProperty(textElement, "className", textClassName + " " + textSecondHalfClassName);
    }
  }
}

/** This method is called when the dimensions of the parent element change. Subclasses should override this method as needed.
 * 
 * Move the text to the center of the progress bar.
 * 
 * @param width the new client width of the element
 * @param height the new client height of the element */
public void onResize (int width, int height) {
  if (textVisible) {
    int textWidth = DOM.getElementPropertyInt(textElement, "offsetWidth");
    int left = (width / 2) - (textWidth / 2);
    DOM.setStyleAttribute(textElement, "left", left + "px");
  }
}

/** Set whether or not resize checking is enabled. If disabled, elements will still be resized on window events, but the timer
 * will not check their dimensions periodically.
 * 
 * @param enabled true to enable the resize checking timer */
public void setResizeCheckingEnabled (boolean enabled) {
  if (enabled && !resizeCheckingEnabled) {
    resizeCheckingEnabled = true;
    if (windowHandler == null) {
      windowHandler = Window.addResizeHandler(this);
    }
    resizeCheckTimer.schedule(resizeCheckDelay);
  } else if (!enabled && resizeCheckingEnabled) {
    resizeCheckingEnabled = false;
    if (windowHandler != null) {
      windowHandler.removeHandler();
      windowHandler = null;
    }
    resizeCheckTimer.cancel();
  }
}

/** Set the current progress.
 * 
 * @param curProgress the current progress */
public void setProgress (double curProgress) {
  this.curProgress = Math.max(minProgress, Math.min(maxProgress, curProgress));
  // Calculate percent complete
  int percent = (int)(100 * getPercent());
  DOM.setStyleAttribute(barElement, "width", percent + "%");
  DOM.setElementProperty(textElement, "innerHTML", generateText(curProgress));
  updateTextStyle(percent);
  // Realign the text
  redraw();
}

/** Sets whether the text is visible over the bar.
 * 
 * @param textVisible True to show text, false to hide it */
public void setTextVisible (boolean textVisible) {
  this.textVisible = textVisible;
  if (this.textVisible) {
    DOM.setStyleAttribute(textElement, "display", "");
    redraw();
  } else {
    DOM.setStyleAttribute(textElement, "display", "none");
  }
}

  /** Sets the placeholder text displayed in the text box.
   * 
   * @param text the placeholder text */
  public void setPlaceholder (String text) {
    placeholder = (text != null ? text : "");
    getElement().setPropertyString("placeholder", placeholder);
  }
}

/** Redraw the progress bar when something changes the layout. */
public void redraw () {
  if (isAttached()) {
    int width = DOM.getElementPropertyInt(getElement(), "clientWidth");
    int height = DOM.getElementPropertyInt(getElement(), "clientHeight");
    onResize(width, height);
  }
}

/** Set whether or not resize checking is enabled. If disabled, elements will still be resized on window events, but the timer
 * will not check their dimensions periodically.
 * 
 * @param enabled true to enable the resize checking timer */
public void setResizeCheckingEnabled (boolean enabled) {
  if (enabled && !resizeCheckingEnabled) {
    resizeCheckingEnabled = true;
    if (windowHandler == null) {
      windowHandler = Window.addResizeHandler(this);
    }
    resizeCheckTimer.schedule(resizeCheckDelay);
  } else if (!enabled && resizeCheckingEnabled) {
    resizeCheckingEnabled = false;
    if (windowHandler != null) {
      windowHandler.removeHandler();
      windowHandler = null;
    }
    resizeCheckTimer.cancel();
  }
}

@Override
public boolean openURI (String URI) {
  if (config.openURLInNewWindow) {
    Window.open(URI, "_blank", null);
  } else {
    Window.Location.assign(URI);
  }
  return true;
}

/** Set the current progress.
 * 
 * @param curProgress the current progress */
public void setProgress (double curProgress) {
  this.curProgress = Math.max(minProgress, Math.min(maxProgress, curProgress));
  // Calculate percent complete
  int percent = (int)(100 * getPercent());
  DOM.setStyleAttribute(barElement, "width", percent + "%");
  DOM.setElementProperty(textElement, "innerHTML", generateText(curProgress));
  updateTextStyle(percent);
  // Realign the text
  redraw();
}

/** Sets whether the text is visible over the bar.
 * 
 * @param textVisible True to show text, false to hide it */
public void setTextVisible (boolean textVisible) {
  this.textVisible = textVisible;
  if (this.textVisible) {
    DOM.setStyleAttribute(textElement, "display", "");
    redraw();
  } else {
    DOM.setStyleAttribute(textElement, "display", "none");
  }
}

/** This method is called when the dimensions of the parent element change. Subclasses should override this method as needed.
 * 
 * Move the text to the center of the progress bar.
 * 
 * @param width the new client width of the element
 * @param height the new client height of the element */
public void onResize (int width, int height) {
  if (textVisible) {
    int textWidth = DOM.getElementPropertyInt(textElement, "offsetWidth");
    int left = (width / 2) - (textWidth / 2);
    DOM.setStyleAttribute(textElement, "left", left + "px");
  }
}

  private void updateTextStyle (int percent) {
    // Set the style depending on the size of the bar
    if (percent < 50) {
      DOM.setElementProperty(textElement, "className", textClassName + " " + textFirstHalfClassName);
    } else {
      DOM.setElementProperty(textElement, "className", textClassName + " " + textSecondHalfClassName);
    }
  }
}

  /** Sets the placeholder text displayed in the text box.
   * 
   * @param text the placeholder text */
  public void setPlaceholder (String text) {
    placeholder = (text != null ? text : "");
    getElement().setPropertyString("placeholder", placeholder);
  }
}

/** Redraw the progress bar when something changes the layout. */
public void redraw () {
  if (isAttached()) {
    int width = DOM.getElementPropertyInt(getElement(), "clientWidth");
    int height = DOM.getElementPropertyInt(getElement(), "clientHeight");
    onResize(width, height);
  }
}

/** This method is called immediately after a widget becomes attached to the browser's document. */
@Override
protected void onLoad () {
  // Reset the position attribute of the parent element
  DOM.setStyleAttribute(getElement(), "position", "relative");
  ResizableWidgetCollection.get().add(this);
  redraw();
}

public void setBarStyleName (String barClassName) {
  DOM.setElementProperty(barElement, "className", barClassName);
}

/** This method is called immediately after a widget becomes attached to the browser's document. */
@Override
protected void onLoad () {
  // Reset the position attribute of the parent element
  DOM.setStyleAttribute(getElement(), "position", "relative");
  ResizableWidgetCollection.get().add(this);
  redraw();
}

public void setBarStyleName (String barClassName) {
  DOM.setElementProperty(barElement, "className", barClassName);
}