Java Code Examples for com.google.gwt.user.client.ui.Widget#getElement()

/**
 * Override {@link #createGwtWidget(Renderable)} to create your widget
 */
@Override
public final Element createDomImpl(Renderable element) {
  Widget w = createGwtWidget(element);

  Element implNodelet;
  Element attachNodelet;
  if (flow == Flow.USE_WIDGET) {
    Preconditions.checkState(w != null, "Cannot have null widget with USE_WIDGET");
    implNodelet = w.getElement();
    attachNodelet = null;
  } else {
    implNodelet = flow.createContainer();
    attachNodelet = implNodelet;
  }

  DomHelper.setContentEditable(implNodelet, false, false);
  DomHelper.makeUnselectable(implNodelet);
  if (w != null) {
    associateWidget(element, w, attachNodelet);
  }

  return implNodelet;
}
 

protected void initDraggableRows() {
    TableWidget tableWidget = getTableWidget();
    if (tableWidget != null) {
        List<Widget> list = tableWidget.getRenderedRows();

        for (Widget row : list) {
            Element rowElement = row.getElement();
            rowElement.setDraggable(Element.DRAGGABLE_TRUE);

            String primaryDragSourceStyle = getStylePrimaryName(getDraggableElement()) + STYLE_SUFFIX_DRAGSOURCE;
            if (!isElementContainsClass(rowElement, primaryDragSourceStyle)) {
                rowElement.addClassName(primaryDragSourceStyle);
            }

            if (!isElementContainsClass(rowElement, getStyleNameDraggable())) {
                rowElement.addClassName(getStyleNameDraggable());
            }
        }
    }
}
 

@Override
protected void removeDraggable(Element element) {
    if (getDragSourceWidget() instanceof TableWidget) {
        TableWidget widget = (TableWidget) getDragSourceWidget();
        List<Widget> list = widget.getRenderedRows();

        for (Widget row : list) {
            Element rowElement = row.getElement();
            rowElement.setDraggable(Element.DRAGGABLE_FALSE);

            String primaryDragSourceStyle = getStylePrimaryName(getDraggableElement()) + STYLE_SUFFIX_DRAGSOURCE;
            rowElement.removeClassName(primaryDragSourceStyle);
            rowElement.removeClassName(getStyleNameDraggable());
        }
    }
}
 

private boolean removeSpacer(Widget spacer) {
    // Validate.
    if (spacer.getParent() != this) {
        return false;
    }
    // Orphan.
    try {
        orphan(spacer);
    } finally {
        // Physical detach.
        Element elem = spacer.getElement();
        DOM.getParent(elem).removeChild(elem);

        // We don't remove the spacer from the children otherwise we mess
        // the accordion logic.
    }
    return true;
}
 

protected void withElement(String querySelector, Consumer<Element> action) {
    ServerConnector parent = getParent();

    if (parent instanceof AbstractComponentConnector) {
        Widget widget = ((AbstractComponentConnector) parent).getWidget();
        if (widget != null) {
            Element element = widget.getElement();
            if (DEFAULT_SELECTOR.equals(querySelector)) {
                action.accept(element);
            } else {
                NodeList<Element> subElements = findSubElements(element, querySelector);
                for (int i = 0; i < subElements.getLength(); i++) {
                    action.accept(subElements.getItem(i));
                }
            }
        }
    }
}
 

public int removeAndReturnIndex(Widget w) {
    int index = -1;
    // Validate.
    if (w.getParent() != this) {
        return index;
    }
    // Orphan.
    try {
        orphan(w);
    } finally {
        index = getWidgetIndex(w);

        // Physical detach.
        Element elem = w.getElement();
        content.removeChild(elem);

        // Logical detach.
        getChildren().remove(w);
    }
    return index;
}
 

public SuggestionButton(final ContentElement element) {
  Widget clickButton =
      ButtonFactory.createIconClickButton(IconButtonStyle.LIGHTBULB, TOOLTIP,
      new ClickButtonListener() {
        @Override
        public void onClick() {
          HasSuggestions suggestion =
              element.getProperty(SuggestionRenderer.HAS_SUGGESTIONS_PROP);
          element.getSuggestionsManager().showSuggestionsFor(suggestion);
        }
      });
  clickButton.getElement().getStyle().setDisplay(Display.INLINE_BLOCK);
  // Logically attach it to the root panel to listen to events, but then
  // manually move the dom to the desired location.
  RootPanel.get().add(clickButton);
  this.element = clickButton.getElement();
  NodeManager.setTransparency(this.element, Skip.DEEP);
  DomHelper.makeUnselectable(this.element);
  this.element.setAttribute("contentEditable", "false");
}
 

/**
 * Override {@link #createGwtWidget(Renderable)} to create your widget
 */
@Override
public final Element createDomImpl(Renderable element) {
  Widget w = createGwtWidget(element);

  Element implNodelet;
  Element attachNodelet;
  if (flow == Flow.USE_WIDGET) {
    Preconditions.checkState(w != null, "Cannot have null widget with USE_WIDGET");
    implNodelet = w.getElement();
    attachNodelet = null;
  } else {
    implNodelet = flow.createContainer();
    attachNodelet = implNodelet;
  }

  DomHelper.setContentEditable(implNodelet, false, false);
  DomHelper.makeUnselectable(implNodelet);
  if (w != null) {
    associateWidget(element, w, attachNodelet);
  }

  return implNodelet;
}
 

/**
 * Clears the background color of a widget to its default by CSS rules.
 *
 * @param widget  widget to remove the background color for
 */
static void resetWidgetBackgroundColor(Widget widget) {
  Element el = widget.getElement();
  if (el != null) {
    el.getStyle().clearBackgroundColor();
  }
}
 

/**
 * Clears the text color of a widget to its default by CSS rules
 *
 * @param widget  widget to remove the text color for
 */
static void resetWidgetTextColor(Widget widget) {
  Element el = widget.getElement();
  if (el != null) {
    el.getStyle().clearColor();
  }
}
 

@Override
protected int computeWidgetHeight(Widget w) {
    Element el = w.getElement();

    int computedHeight = (int) new ComputedStyle(el).getHeight();
    int measuredHeight = getLayoutManager().getOuterHeight(el);

    return measuredHeight >= 0 ? measuredHeight : computedHeight;
}
 

@Override
public void load() {
    Widget parent = getParent();
    if (parent instanceof HasActivates) {
        String uid = DOM.createUniqueId();
        ((HasActivates) parent).setActivates(uid);
        setId(uid);
        activatorElement = parent.getElement();
    } else if (activatorElement == null) {
        activatorElement = DOMHelper.getElementByAttribute("data-activates", activator);
    }

    $(activatorElement).dropdown(options);

}
 

public int getCellForWidget(Widget w) {
	for (Element e = w.getElement(); e != null; e = DOM.getParent(e)) {
		if (e.getPropertyString("tagName").equalsIgnoreCase("span")) {
			if (DOM.getParent(e) == getElement())
				return DOM.getChildIndex(getElement(), e);
		}
		if (e == getElement()) { return -1; }
	}
	return -1;
}
 

public int getRowForWidget(Widget w) {
	for (Element td = w.getElement(); td != null; td = DOM.getParent(td)) {
		if (td.getPropertyString("tagName").equalsIgnoreCase("td")) {
			Element tr = DOM.getParent(td);
			Element body = DOM.getParent(tr);
			if (body == getBodyElement())
				return DOM.getChildIndex(body, tr);
		}
		if (td == getBodyElement()) { return -1; }
	}
	return -1;
}
 

@SuppressWarnings("static")
public void testRegistersContainerNodelet() {
  complexHandler(Flow.INLINE);

  AgentAdapter e1 = elem("ab");
  Widget a = handler.getGwtWidget(e1);
  com.google.gwt.user.client.Element b = a.getElement();
  Node c = b.getFirstChild();
  Element d = e1.getContainerNodelet();
  assertSame(c,
      d);

}
 

public void popup(Widget container, Widget relativeTo) {
	this.setVisible(true);
	StyleUtils.addStyle(this, InputDatePicker.STYLE_POPUP);
	RootPanel.get().add(this);

	Element positioningElement = this.getElement();
	Element relativeElement = relativeTo.getElement();

	int targetHeight = relativeElement.getOffsetHeight();
	int targetTop = relativeElement.getAbsoluteTop();

	int positioningWidth = positioningElement.getOffsetWidth();
	int targetRight = relativeElement.getAbsoluteRight();

	Style elementStyle = positioningElement.getStyle();
	elementStyle.setPosition(Position.ABSOLUTE);
	elementStyle.setLeft(targetRight - positioningWidth, Unit.PX);
	elementStyle.setTop(targetTop + targetHeight, Unit.PX);

	StyleUtils.addStyle(this, InputDatePicker.STYLE_FADE);
	StyleUtils.addStyle(this, InputDatePicker.STYLE_SHOW);

	this.setFocus(true);

	if (this.popupBlurHandler == null) {
		this.popupBlurHandler = this.addBlurHandler(new BlurHandler() {

			@Override
			public void onBlur(BlurEvent event) {
				InputDatePicker.this.hide();
			}
		});
	}
}
 

private void resetPosition(Element toPositionedElement, Widget relativeTo, Placement placement) {
	Element relativeElement = relativeTo.getElement();

	com.google.gwt.dom.client.Style elementStyle = toPositionedElement.getStyle();
	int tooltipWidth = toPositionedElement.getOffsetWidth();
	int tooltipHeight = toPositionedElement.getOffsetHeight();

	int targetWidth = relativeElement.getOffsetWidth();
	int targetHeight = relativeElement.getOffsetHeight();
	int targetTop = relativeElement.getOffsetTop();
	int targetLeft = relativeElement.getOffsetLeft();

	elementStyle.setPosition(Position.ABSOLUTE);
	switch (placement) {
		case TOP:
			elementStyle.setLeft(targetLeft + targetWidth / 2 - tooltipWidth / 2, Unit.PX);
			elementStyle.setTop(targetTop - tooltipHeight, Unit.PX);
			break;
		case BOTTOM:
			elementStyle.setLeft(targetLeft + targetWidth / 2 - tooltipWidth / 2, Unit.PX);
			elementStyle.setTop(targetTop + targetHeight, Unit.PX);
			break;
		case LEFT:
			elementStyle.setLeft(targetLeft - tooltipWidth, Unit.PX);
			elementStyle.setTop(targetTop + targetHeight / 2 - tooltipHeight / 2, Unit.PX);
			break;
		case RIGHT:
			elementStyle.setLeft(targetLeft + targetWidth, Unit.PX);
			elementStyle.setTop(targetTop + targetHeight / 2 - tooltipHeight / 2, Unit.PX);
			break;
		default:
			break;
	}
}
 

public ClonedWidget(Widget origWidget) {
  this(origWidget.getElement());
}
 

/**
 * The container of which the scrolling feature will be applied.
 */
public void setContainer(Widget widget) {
    this.containerElement = widget.getElement();
}
 

public static void initStyle(Widget w) {
	if (w != null && w.getElement() != null) {
		String widgetClassName = "p-" + CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_HYPHEN, w.getClass().getSimpleName());
		w.getElement().addClassName(widgetClassName);
	}
}