def newPositioner(self, context):
# Use two widgets so that setPixelSize() consistently affects dimensions
outer = SimplePanel()
outer.addStyleName(CSS_DRAGDROP_POSITIONER)
# place off screen for border calculation
RootPanel.get().add(outer, -500, -500)
# Ensure IE quirks mode returns valid outer.offsetHeight, and thus valid
outer.setWidget(self.DUMMY_LABEL_IE_QUIRKS_MODE_OFFSET_HEIGHT)
width = 0
height = 0
if isinstance(self.dropTarget,HorizontalPanel):
for widget in context.selectedWidgets:
width += widget.getOffsetWidth()
height = Math.max(height, widget.getOffsetHeight())
else:
for widget in context.selectedWidgets:
width = Math.max(width, widget.getOffsetWidth())
height += widget.getOffsetHeight()
inner = SimplePanel()
inner.setPixelSize(
width - DOMUtil.getHorizontalBorders(outer), height - DOMUtil.getVerticalBorders(outer))
outer.setWidget(inner)
return outer
def makePositioner(self, reference):
outer = SimplePanel() # Use two widgets so that setPixelSize() consistently affects dimensions
outer.addStyleName(CSS_DRAGDROP_POSITIONER)
outer.getElement().getStyle().setProperty("margin", "0px")
RootPanel.get().add(outer, -500, -500) # place off screen for border calculation
outer.setWidget(DUMMY_LABEL_IE_QUIRKS_MODE_OFFSET_HEIGHT) # Ensure IE quirks mode returns valid outer.offsetHeight, and thus valid
inner = SimplePanel()
inner.getElement().getStyle().setProperty("margin", "0px")
inner.getElement().getStyle().setProperty("border", "none")
offsetWidth = reference.getOffsetWidth() - DOMUtil.getHorizontalBorders(outer)
offsetHeight = reference.getOffsetHeight() - DOMUtil.getVerticalBorders(outer)
inner.setPixelSize(offsetWidth, offsetHeight)
outer.setWidget(inner)
return outer
def onEnter(self, context):
super(self.__class__,self).onEnter(context)
assert self.draggableList.size() == 0
self.dropTargetClientWidth = DOMUtil.getClientWidth(self.dropTarget.getElement())
self.dropTargetClientHeight = DOMUtil.getClientHeight(self.dropTarget.getElement())
self.calcDropTargetOffset()
draggableAbsoluteLeft = context.draggable.getAbsoluteLeft()
draggableAbsoluteTop = context.draggable.getAbsoluteTop()
for widget in context.selectedWidgets:
draggable = self.Draggable(widget)
draggable.positioner = self.makePositioner(widget)
draggable.relativeX = widget.getAbsoluteLeft() - draggableAbsoluteLeft
draggable.relativeY = widget.getAbsoluteTop() - draggableAbsoluteTop
self.draggableList.add(draggable)
def onEnter(self, context):
super(self.__class__, self).onEnter(context)
self.positioner = self.newPositioner(context)
targetIndex = DOMUtil.findIntersect(
self.dropTarget, CoordinateLocation(context.mouseX, context.mouseY), self.getLocationWidgetComparator()
)
self.insert(self.positioner, targetIndex)
def onMove(self, context):
super(self.__class__, self).onMove(context)
targetIndex = DOMUtil.findIntersect(
self.dropTarget, CoordinateLocation(context.mouseX, context.mouseY), self.getLocationWidgetComparator()
)
positionerIndex = self.dropTarget.getWidgetIndex(self.positioner)
# check that positioner not already in the correct location
if positionerIndex is not targetIndex and (positionerIndex is not targetIndex - 1 or targetIndex == 0):
if positionerIndex == 0 and self.dropTarget.getWidgetCount() == 1:
pass
elif positionerIndex == 0 and self.dropTarget.getWidgetCount() == 1:
pass
elif targetIndex == -1:
# outside drop target, so remove positioner to indicate a drop will not happen
self.positioner.removeFromParent()
else:
self.insert(self.positioner, targetIndex)
def calcDropTargetOffset(self):
dropTargetLocation = WidgetLocation(self.dropTarget, None)
self.dropTargetOffsetX = dropTargetLocation.getLeft() \
+ DOMUtil.getBorderLeft(self.dropTarget.getElement())
self.dropTargetOffsetY = dropTargetLocation.getTop() \
+ DOMUtil.getBorderTop(self.dropTarget.getElement())
