@Override
public void onBrowserEvent(Event event) {
if (cancelled) {
return;
}
assertEquals(eventType, event.getType());
if (supportsShiftKeys) {
assertAllShiftKeys(event, expectedCtrl, expectedAlt, expectedShift, expectedMeta);
}
EventTarget target = event.getCurrentEventTarget();
if (Element.is(target)) {
if (Element.as(target) == child) {
assertFalse("Expecting child to receive the event only once", childReceived);
assertFalse("Expecting child to receive the event before parent", parentReceived);
childReceived = true;
} else if (Element.as(target) == parent) {
assertFalse("Expecting parent to receive the event only once", parentReceived);
assertTrue("Expecting parent to receive the event after the child", childReceived);
parentReceived = true;
}
}
}
/**
* Called when an event occurs in a rendered instance of this Cell. The parent element refers to
* the element that contains the rendered cell, NOT to the outermost element that the Cell
* rendered.
*/
@Override
public void onBrowserEvent(
final Context context,
final Element parent,
final List<FlashCardDto> flashCardList,
final NativeEvent event,
final ValueUpdater<List<FlashCardDto>> valueUpdater) {
// Let AbstractCell handle the keydown event.
super.onBrowserEvent(context, parent, flashCardList, event, valueUpdater);
// Handle the click event.
if ("click".equals(event.getType())) {
// Ignore clicks that occur outside of the outermost element.
EventTarget eventTarget = event.getEventTarget();
if (parent.isOrHasChild(Element.as(eventTarget))) {
// use this to get the selected element!!
Element el = Element.as(eventTarget);
// check if we really click on the image
if (el.getParentElement().getNodeName().equalsIgnoreCase("DIV")) {
doAction(el.getParentElement().getAttribute("name"), valueUpdater);
}
}
}
}
/**
* Called when an event occurs in a rendered instance of this Cell. The parent element refers to
* the element that contains the rendered cell, NOT to the outermost element that the Cell
* rendered.
*/
@Override
public void onBrowserEvent(
com.google.gwt.cell.client.Cell.Context context,
Element parent,
String value,
NativeEvent event,
com.google.gwt.cell.client.ValueUpdater<String> valueUpdater) {
// Let AbstractCell handle the keydown event.
super.onBrowserEvent(context, parent, value, event, valueUpdater);
// Handle the click event.
if ("click".equals(event.getType())) {
// Ignore clicks that occur outside of the outermost element.
EventTarget eventTarget = event.getEventTarget();
if (parent.isOrHasChild(Element.as(eventTarget))) {
// if (parent.getFirstChildElement().isOrHasChild(
// Element.as(eventTarget))) {
// use this to get the selected element!!
Element el = Element.as(eventTarget);
// check if we really click on the image
if (callback != null && el.getNodeName().equalsIgnoreCase("IMG")) {
final String s = el.getParentElement().getAttribute("name");
final KieContainer container = containersProvider.getContainer(value);
final boolean isUp = SharedUtils.getContainerStatus(container);
final boolean isKieApp =
container.getType() != null
&& KieImageCategory.KIEAPP.equals(container.getType().getCategory());
if (ContainerActionsCell.PLAY.equals(s) && !isUp) {
callback.onStart(container);
} else if (ContainerActionsCell.STOP.equals(s) && isUp) {
callback.onStop(container);
} else if (ContainerActionsCell.RELOAD.equals(s) && isUp) {
callback.onRestart(container);
} else if (ContainerActionsCell.REMOVE.equals(s)) {
callback.onRemove(container);
} else if (ContainerActionsCell.VIEW_LOGS.equals(s)) {
callback.onViewLogs(container);
} else if (ContainerActionsCell.VIEW_DETAILS.equals(s) && isUp && isKieApp) {
callback.onViewDetails(container);
} else if (ContainerActionsCell.NAVIGATE.equals(s) && isUp && isKieApp) {
callback.onNavigate(container);
}
}
}
}
};
/**
* Does the event target this popup?
*
* @param event the native event
* @return true if the event targets the popup
*/
private boolean eventTargetsPopup(NativeEvent event) {
EventTarget target = event.getEventTarget();
if (Element.is(target)) {
return getElement().isOrHasChild(Element.as(target));
}
return false;
}
@Override
public void onBrowserEvent(Event event) {
PerfTimer timer = PerfTimer.get(this, "onBrowserEvent");
Element target = Element.as(event.getEventTarget());
int index = getTargetItemIndex(target);
if (index != -1) {
// Don't need to support de-select since there is no gesture modifier
Element.as(getElement().getChildNodes().getItem(selected))
.removeClassName(AppResources.INSTANCE.css().selected());
Element.as(getElement().getChildNodes().getItem(index))
.addClassName(AppResources.INSTANCE.css().selected());
SelectionEvent.fire(this, data.get(index));
this.selected = index;
}
timer.end();
}
private Element getLastChildElement(Element parent) {
Node lastTab = parent.getLastChild();
while (lastTab.getNodeType() != Node.ELEMENT_NODE) {
lastTab = lastTab.getPreviousSibling();
}
return Element.as(lastTab);
}
@Override
protected void onPreviewNativeEvent(NativePreviewEvent event) {
Element target = Element.as(event.getNativeEvent().getEventTarget());
switch (event.getTypeInt()) {
case Event.ONCLICK:
if (isOrHasChildOfButton(target)) {
updateState(false, true);
}
break;
case Event.ONMOUSEDOWN:
if (!isOrHasChildOfPopup(target)
&& !isOrHasChildOfConsole(target)
&& !isOrHasChildOfButton(target)) {
updateState(false, true);
}
break;
case Event.ONKEYPRESS:
if (isOrHasChildOfPopup(target)) {
// Catch children that use keyboard, so we can unfocus
// them
// when
// hiding
activeChildren.add(target);
}
break;
default:
break;
}
super.onPreviewNativeEvent(event);
}
/** Return the element that was the actual target of the element. */
private Element getEventTarget(Event e) {
EventTarget eventTarget = e.getEventTarget();
if (!Element.is(eventTarget)) {
return null;
}
return Element.as(eventTarget);
}
private boolean isResizeHandle(EventTarget eventTarget) {
if (Element.is(eventTarget)) {
Element e = Element.as(eventTarget);
if (e.getClassName().contains("-column-resize-handle")) {
return true;
}
}
return false;
}
/**
* Overwrites the default rich text area behavior when the user releases the mouse button.
*
* @param event the native event that was fired
*/
protected void onBeforeMouseUp(Event event) {
// The height of the body element is given by its content. When the height of the body element
// is less than the
// rich text area height the user can click outside of the body element, on the HTML element.
// When this happens
// the selection can be lost. To prevent this we give the focus back to the body element.
if (Element.is(event.getEventTarget())
&& "html".equalsIgnoreCase(Element.as(event.getEventTarget()).getTagName())) {
textArea.setFocus(true);
}
}
public void moveTab(int index, int delta) {
// do no work if we haven't been asked to move anywhere
if (delta == 0) return;
Element tabHost = getTabBarElement();
// ignore moving left if the tab is already the leftmost tab (same for
// right)
int dest = index + delta;
if (dest < 0 || dest >= tabHost.getChildCount()) return;
// rearrange the DOM
Element tab = Element.as(tabHost.getChild(index));
Element prev = Element.as(tabHost.getChild(dest));
tabHost.removeChild(tab);
if (delta > 0) tabHost.insertAfter(tab, prev);
else tabHost.insertBefore(tab, prev);
// fire the tab reorder event (this syncs the editor state)
TabReorderEvent event = new TabReorderEvent(index, dest);
fireEvent(event);
}
/**
* This function intercepts the user click on the map and call the method named
* getCenterMapstraction
*
* @see com.google.gwt.user.client.ui.Composite#onBrowserEvent(com.google.gwt.user.client.Event)
*/
@Override
public void onBrowserEvent(Event event) {
super.onBrowserEvent(event);
Element targetElement = Element.as(((NativeEvent) event).getEventTarget());
String targetTagName = targetElement.getTagName();
if (targetTagName.equalsIgnoreCase("svg") || targetTagName.equalsIgnoreCase("path"))
getCenterMapstraction(
EUOSMEGWT.apiMapstraction,
geoBoundsObj.newTextBoxNorth.getElement(),
geoBoundsObj.newTextBoxEast.getElement(),
geoBoundsObj.newTextBoxSouth.getElement(),
geoBoundsObj.newTextBoxWest.getElement());
}
private Element findAppNameElement(Element parent) {
for (int i = 0; i < parent.getChildCount(); i++) {
Node childNode = parent.getChild(i);
if (Element.is(childNode)) {
Element child = Element.as(childNode);
if (child.getAttribute("name").equalsIgnoreCase(appearance.download())) { // $NON-NLS-1$
return child;
}
}
}
return null;
}
/**
* Blurs the time box if the user clicks outside of it.
*
* <p>
*
* @param event the native preview event
*/
protected void previewNativeEvent(NativePreviewEvent event) {
Event nativeEvent = Event.as(event.getNativeEvent());
if ((nativeEvent.getTypeInt() == Event.ONCLICK)) {
EventTarget target = nativeEvent.getEventTarget();
if (!Element.is(target)) {
return;
}
Element element = Element.as(target);
if (!m_time.getElement().isOrHasChild(element)) {
m_time.blur();
}
}
}
/**
* Does the event target one of the partner elements?
*
* @param event the native event
* @return true if the event targets a partner
*/
private boolean eventTargetsPartner(NativeEvent event) {
if (autoHidePartners == null) {
return false;
}
EventTarget target = event.getEventTarget();
if (Element.is(target)) {
for (Element elem : autoHidePartners) {
if (elem.isOrHasChild(Element.as(target))) {
return true;
}
}
}
return false;
}
@Override
public void onBrowserEvent(
Context context, Element parent, C value, NativeEvent event, ValueUpdater<C> valueUpdater) {
super.onBrowserEvent(context, parent, value, event, valueUpdater);
if (CLICK.equals(event.getType())) {
EventTarget eventTarget = event.getEventTarget();
if (!Element.is(eventTarget)) {
return;
}
if (parent.getFirstChildElement().isOrHasChild(Element.as(eventTarget))) {
// Ignore clicks that occur outside of the main element.
onEnterKeyDown(context, parent, value, event, valueUpdater);
}
}
}
public void onMouseUp(MouseUpEvent event) {
if (mouseMoveCanceled) {
return;
}
Event.releaseCapture(getElement());
setFocus(false);
if (moveRegistration != null) {
moveRegistration.removeHandler();
moveRegistration = null;
}
int endX = event.getClientX();
int endY = event.getClientY();
int xDiff = startX - endX;
int yDiff = startY - endY;
startX = -1;
startY = -1;
mouseMoveStarted = false;
Style s = getElement().getStyle();
s.setZIndex(1);
if (!clickTargetsResize()) {
// check if mouse has moved over threshold of 3 pixels
boolean mouseMoved = (xDiff < -3 || xDiff > 3 || yDiff < -3 || yDiff > 3);
if (!weekGrid.getCalendar().isDisabledOrReadOnly() && mouseMoved) {
// Event Move:
// - calendar must be enabled
// - calendar must not be in read-only mode
weekGrid.eventMoved(this);
} else if (!weekGrid.getCalendar().isDisabled()) {
// Event Click:
// - calendar must be enabled (read-only is allowed)
EventTarget et = event.getNativeEvent().getEventTarget();
Element e = Element.as(et);
if (e == caption || e == eventContent || e.getParentElement() == caption) {
if (weekGrid.getCalendar().getEventClickListener() != null) {
weekGrid.getCalendar().getEventClickListener().eventClick(calendarEvent);
}
}
}
} else { // click targeted resize bar
removeGlobalResizeStyle();
if (weekGrid.getCalendar().getEventResizeListener() != null) {
weekGrid.getCalendar().getEventResizeListener().eventResized(calendarEvent);
}
}
}
private void editEvent(
Context context,
Element parent,
String value,
ViewData viewData,
NativeEvent event,
ValueUpdater<String> valueUpdater) {
String type = event.getType();
boolean keyUp = KEYUP.equals(type);
boolean keyDown = KEYDOWN.equals(type);
if (keyUp || keyDown) {
int keyCode = event.getKeyCode();
if (keyUp
&& keyCode == KeyCodes.KEY_ENTER
&& (event.getCtrlKey() || event.getAltKey() || event.getShiftKey())) {
// Commit the change.
commit(context, parent, viewData, valueUpdater);
} else if (keyUp && keyCode == KeyCodes.KEY_ESCAPE) {
// Cancel edit mode.
String originalText = viewData.getOriginal();
if (viewData.isEditingAgain()) {
viewData.setText(originalText);
viewData.setEditing(false);
} else {
setViewData(context.getKey(), null);
}
cancel(context, parent, value);
} else {
// Update the text in the view data on each key.
updateViewData(parent, viewData, true);
}
} else if (BLUR.equals(type)) {
// Commit the change. Ensure that we are blurring the input element and
// not the parent element itself.
EventTarget eventTarget = event.getEventTarget();
if (Element.is(eventTarget)) {
Element target = Element.as(eventTarget);
if ("input".equals(target.getTagName().toLowerCase())) {
commit(context, parent, viewData, valueUpdater);
}
}
}
}
@Override
public void onBrowserEvent(Event event) {
switch (DOM.eventGetType(event)) {
case Event.ONCLICK:
{
// tabs can be closed by (a) middle mouse (anywhere), or (b)
// left click on close element
if (event.getButton() == Event.BUTTON_MIDDLE
|| (Element.as(event.getEventTarget()) == closeElement_
&& event.getButton() == Event.BUTTON_LEFT)) {
closeHandler_.onTabClose();
event.stopPropagation();
event.preventDefault();
}
break;
}
}
super.onBrowserEvent(event);
}
@Override
public void onBrowserEvent(
com.google.gwt.cell.client.Cell.Context context,
Element parent,
SummaryDTO value,
NativeEvent event,
ValueUpdater<SummaryDTO> valueUpdater) {
super.onBrowserEvent(context, parent, value, event, valueUpdater);
EventTarget eventTarget = event.getEventTarget();
if (Element.is(eventTarget)) {
Element src = Element.as(eventTarget);
String id = src.getId();
if (id.startsWith(SEE_METADATA)) {
presenter.displayMetadata(value.getUuid());
}
if (id.startsWith(PDF_METADATA)) {
presenter.displayMetadataPDF(value.getUuid());
}
}
}
public void onMouseDown(MouseDownEvent event) {
startX = event.getClientX();
startY = event.getClientY();
if (isDisabled() || event.getNativeButton() != NativeEvent.BUTTON_LEFT) {
return;
}
clickTarget = Element.as(event.getNativeEvent().getEventTarget());
mouseMoveCanceled = false;
if (weekGrid.getCalendar().isEventMoveAllowed() || clickTargetsResize()) {
moveRegistration = addMouseMoveHandler(this);
setFocus(true);
try {
startYrelative = (int) ((double) event.getRelativeY(caption) % slotHeight);
startXrelative =
(event.getRelativeX(weekGrid.getElement()) - weekGrid.timebar.getOffsetWidth())
% getDateCellWidth();
} catch (Exception e) {
GWT.log("Exception calculating relative start position", e);
}
mouseMoveStarted = false;
Style s = getElement().getStyle();
s.setZIndex(1000);
startDatetimeFrom = (Date) calendarEvent.getStartTime().clone();
startDatetimeTo = (Date) calendarEvent.getEndTime().clone();
Event.setCapture(getElement());
}
// make sure the right cursor is always displayed
if (clickTargetsResize()) {
addGlobalResizeStyle();
}
/*
* We need to stop the event propagation or else the WeekGrid
* range select will kick in
*/
event.stopPropagation();
event.preventDefault();
}
@Override
public void onBrowserEvent(
Cell.Context context,
Element parent,
MetadataTemplateInfo value,
NativeEvent event,
ValueUpdater<MetadataTemplateInfo> valueUpdater) {
if (value == null) {
return;
}
Element eventTarget = Element.as(event.getEventTarget());
Element child = findAppNameElement(parent);
if (child != null && child.isOrHasChild(eventTarget)) {
switch (Event.as(event).getTypeInt()) {
case Event.ONCLICK:
doOnClick(eventTarget, value);
break;
default:
break;
}
}
}
private void updatePOILayer(Element markerElement) {
String markerImageSrc = Element.as(markerElement.getFirstChild()).getAttribute("src");
String currentStyles = markerElement.getAttribute("style");
if (markerImageSrc.equals("images/selected-DOWN.png")
|| markerImageSrc.equals("images/deselected-DOWN.png")) {
markerElement.setAttribute("style", currentStyles.replace("z-index: 90", "z-index: 90"));
} else if (markerImageSrc.equals("images/selected-DISCONNECTED.png")
|| markerImageSrc.equals("images/deselected-DISCONNECTED.png")) {
markerElement.setAttribute("style", currentStyles.replace("z-index: 90", "z-index: 80"));
} else if (markerImageSrc.equals("images/selected-MARGINAL.png")
|| markerImageSrc.equals("images/deselected-MARGINAL.png")) {
markerElement.setAttribute("style", currentStyles.replace("z-index: 90", "z-index: 70"));
} else if (markerImageSrc.equals("images/selected-UP.png")
|| markerImageSrc.equals("images/deselected-UP.png")) {
markerElement.setAttribute("style", currentStyles.replace("z-index: 90", "z-index: 60"));
} else if (markerImageSrc.equals("images/selected-STOPPED.png")
|| markerImageSrc.equals("images/deselected-STOPPED.png")) {
markerElement.setAttribute("style", currentStyles.replace("z-index: 90", "z-index: 50"));
} else if (markerImageSrc.equals("images/selected-UNKNOWN.png")
|| markerImageSrc.equals("images/deselected-UNKNOWN.png")) {
markerElement.setAttribute("style", currentStyles.replace("z-index: 90", "z-index: 40"));
}
}
/**
* Detaches the XML tree from the DOM. Use with caution. {@link #getNode(String)} will not work
* after this.
*/
public void detach() {
if (root != null) {
Element.as(root).removeFromParent();
}
}
public void ensureSelectedTabIsVisible(boolean animate) {
if (currentAnimation_ != null) {
currentAnimation_.cancel();
currentAnimation_ = null;
}
Element selectedTab =
(Element)
DomUtils.findNode(
getElement(),
true,
false,
new NodePredicate() {
public boolean test(Node n) {
if (n.getNodeType() != Node.ELEMENT_NODE) return false;
return ((Element) n).getClassName().contains("gwt-TabLayoutPanelTab-selected");
}
});
if (selectedTab == null) {
return;
}
selectedTab = selectedTab.getFirstChildElement().getFirstChildElement();
Element tabBar = getTabBarElement();
if (!isVisible() || !isAttached() || tabBar.getOffsetWidth() == 0) return; // not yet loaded
final Element tabBarParent = tabBar.getParentElement();
final int start = tabBarParent.getScrollLeft();
int end =
DomUtils.ensureVisibleHoriz(
tabBarParent, selectedTab, padding_, padding_ + rightMargin_, true);
// When tabs are closed, the overall width shrinks, and this can lead
// to cases where there's too much empty space on the screen
Node lastTab = getLastChildElement(tabBar);
if (lastTab == null || lastTab.getNodeType() != Node.ELEMENT_NODE) return;
int edge =
DomUtils.getRelativePosition(tabBarParent, Element.as(lastTab)).x
+ Element.as(lastTab).getOffsetWidth();
end = Math.min(end, Math.max(0, edge - (tabBarParent.getOffsetWidth() - rightMargin_)));
if (edge <= tabBarParent.getOffsetWidth() - rightMargin_) end = 0;
if (start != end) {
if (!animate) {
tabBarParent.setScrollLeft(end);
} else {
final int finalEnd = end;
currentAnimation_ =
new Animation() {
@Override
protected void onUpdate(double progress) {
double delta = (finalEnd - start) * progress;
tabBarParent.setScrollLeft((int) (start + delta));
}
@Override
protected void onComplete() {
if (this == currentAnimation_) {
tabBarParent.setScrollLeft(finalEnd);
currentAnimation_ = null;
}
}
};
currentAnimation_.run(Math.max(200, Math.min(1500, Math.abs(end - start) * 2)));
}
}
}
private void beginDrag(Event evt) {
String docId = initDragParams_.getDocId();
int dragTabWidth = initDragWidth_;
// set drag element state
dragTabsHost_ = getTabBarElement();
dragScrollHost_ = dragTabsHost_.getParentElement();
outOfBounds_ = 0;
candidatePos_ = null;
startPos_ = null;
// attempt to determine which tab the cursor is over
Point hostPos = DomUtils.getRelativePosition(Document.get().getBody(), dragTabsHost_);
int dragX = evt.getClientX() - hostPos.getX();
for (int i = 0; i < dragTabsHost_.getChildCount(); i++) {
Node node = dragTabsHost_.getChild(i);
if (node.getNodeType() == Node.ELEMENT_NODE) {
int left =
DomUtils.leftRelativeTo(dragTabsHost_, Element.as(node))
- dragScrollHost_.getScrollLeft();
int right = left + Element.as(node).getOffsetWidth();
if (left <= dragX && dragX <= right) {
candidatePos_ = i;
break;
}
}
}
// let the rest of the IDE know we're dragging (this will enable us to
// disable drag targets that might otherwise be happy to accept the
// data)
curState_ = STATE_DRAGGING;
events_.fireEvent(
new DocTabDragStateChangedEvent(DocTabDragStateChangedEvent.STATE_DRAGGING));
// the relative position of the last node determines how far we
// can drag
dragMax_ =
DomUtils.leftRelativeTo(dragTabsHost_, getLastChildElement(dragTabsHost_))
+ getLastChildElement(dragTabsHost_).getClientWidth();
lastCursorX_ = evt.getClientX();
// account for cursor starting out of bounds (e.g. dragging into
// empty space on the right of the panel)
if (lastCursorX_ > dragMax_ + (initDragParams_.getCursorOffset()))
outOfBounds_ = (lastCursorX_ - dragMax_) - initDragParams_.getCursorOffset();
// attempt to ascertain whether the element being dragged is one of
// our own documents
for (DocTab tab : docTabs_) {
if (tab.getDocId() == docId) {
dragElement_ = tab.getElement().getParentElement().getParentElement();
break;
}
}
// if we couldn't find the horizontal drag position in any tab, append
// to the end
if (candidatePos_ == null) {
candidatePos_ = dragTabsHost_.getChildCount();
}
destPos_ = candidatePos_;
// if we're dragging one of our own documents, figure out its physical
// position
if (dragElement_ != null) {
for (int i = 0; i < dragTabsHost_.getChildCount(); i++) {
if (dragTabsHost_.getChild(i) == dragElement_) {
startPos_ = i;
break;
}
}
}
// compute the start location for the drag
if (candidatePos_ >= dragTabsHost_.getChildCount()) {
Element lastTab = getLastChildElement(dragTabsHost_);
lastElementX_ = DomUtils.leftRelativeTo(dragTabsHost_, lastTab) + lastTab.getOffsetWidth();
} else {
lastElementX_ =
DomUtils.leftRelativeTo(
dragTabsHost_, Element.as(dragTabsHost_.getChild(candidatePos_)));
}
// if we're dragging one of our own tabs, snap it out of the
// tabset
if (dragElement_ != null) {
dragElement_.getStyle().setPosition(Position.ABSOLUTE);
dragElement_.getStyle().setLeft(lastElementX_, Unit.PX);
dragElement_.getStyle().setZIndex(100);
Scheduler.get()
.scheduleDeferred(
new ScheduledCommand() {
@Override
public void execute() {
dragElement_.getStyle().setDisplay(Display.NONE);
}
});
}
// create the placeholder that shows where this tab will go when the
// mouse is released
dragPlaceholder_ = Document.get().createDivElement();
dragPlaceholder_.getStyle().setWidth(dragTabWidth - 4, Unit.PX);
dragPlaceholder_.getStyle().setHeight(dragTabsHost_.getClientHeight() - 3, Unit.PX);
dragPlaceholder_.getStyle().setDisplay(Display.INLINE_BLOCK);
dragPlaceholder_.getStyle().setPosition(Position.RELATIVE);
dragPlaceholder_.getStyle().setFloat(Float.LEFT);
dragPlaceholder_.getStyle().setBorderStyle(BorderStyle.DOTTED);
dragPlaceholder_.getStyle().setBorderColor("#A1A2A3");
dragPlaceholder_.getStyle().setBorderWidth(1, Unit.PX);
dragPlaceholder_.getStyle().setMarginLeft(1, Unit.PX);
dragPlaceholder_.getStyle().setMarginRight(1, Unit.PX);
dragPlaceholder_.getStyle().setProperty("borderTopLeftRadius", "4px");
dragPlaceholder_.getStyle().setProperty("borderTopRightRadius", "4px");
dragPlaceholder_.getStyle().setProperty("borderBottom", "0px");
if (candidatePos_ < dragTabsHost_.getChildCount()) {
dragTabsHost_.insertBefore(dragPlaceholder_, dragTabsHost_.getChild(candidatePos_));
} else {
dragTabsHost_.appendChild(dragPlaceholder_);
}
}
private Element getTab(int index) {
if (index >= getElement().getChildCount() - 1) return null;
return Element.as(getElement().getChild(index)).cast();
}