def doDrag(self, event, x, y):
self.dragBusy = True
#self.dragDataStore.dropEffect = 'none'
drag_event = self.fireDNDEvent('drag', None, self.dragWidget)
# drag event was not canceled
if not isCanceled(drag_event):
target = None
widget = None
# Find the most specific element under the cursor and the widget
# with the drop listener for it.
for widget in self.dropTargets:
target = getElementUnderMouse(widget, x, y)
if target is not None:
break
if target:
drop_widget = widget
drop_element = target
if (not self.currentTargetElement or not DOM.compare(
drop_element, self.currentTargetElement)):
# enter_event = self.makeDragEvent(event,'dragenter',
# drop_element)
enter_event = self.fireDNDEvent('dragenter', drop_element,
drop_widget)
# drop_widget.onDragEnter(enter_event)
# self.finalize(enter_event)
if isCanceled(enter_event):
self.currentTargetElement = drop_element
self.currentDropWidget = drop_widget
if self.currentTargetElement is not None:
# disable dropping if over event is not canceled
# over_event = self.makeDragEvent(event, 'dragover',
# drop_element)
over_event = self.fireDNDEvent('dragover', drop_element,
self.currentDropWidget)
# self.currentDropWidget.onDragOver(over_event)
# self.finalize(over_event)
if isCanceled(over_event):
self.updateDragOperation(over_event)
else:
self.currentDragOperation = 'none'
self.draggingImage.updateCursor(self.currentDragOperation)
else:
self.currentTargetElement = None
else:
self.currentDragOperation = 'none'
self.dragBusy = False
def doDrag(self, event, x, y):
self.dragBusy = True
#self.dragDataStore.dropEffect = 'none'
drag_event = self.fireDNDEvent('drag', None, self.dragWidget)
# drag event was not canceled
if not isCanceled(drag_event):
target = None
widget = None
# Find the most specific element under the cursor and the widget
# with the drop listener for it.
for widget in self.dropTargets:
target = getElementUnderMouse(widget, x, y)
if target is not None:
break
if target:
drop_widget = widget
drop_element = target
if (not self.currentTargetElement or
not DOM.compare(drop_element, self.currentTargetElement)):
# enter_event = self.makeDragEvent(event,'dragenter',
# drop_element)
enter_event = self.fireDNDEvent('dragenter', drop_element,
drop_widget)
# drop_widget.onDragEnter(enter_event)
# self.finalize(enter_event)
if isCanceled(enter_event):
self.currentTargetElement = drop_element
self.currentDropWidget = drop_widget
if self.currentTargetElement is not None:
# disable dropping if over event is not canceled
# over_event = self.makeDragEvent(event, 'dragover',
# drop_element)
over_event = self.fireDNDEvent('dragover', drop_element,
self.currentDropWidget)
# self.currentDropWidget.onDragOver(over_event)
# self.finalize(over_event)
if isCanceled(over_event):
self.updateDragOperation(over_event)
else:
self.currentDragOperation = 'none'
self.draggingImage.updateCursor(self.currentDragOperation)
else:
self.currentTargetElement = None
else:
self.currentDragOperation = 'none'
self.dragBusy = False
def onMouseUp(self, sender, x, y):
# event = DOM.eventGetCurrentEvent()
self.dragging = NOT_DRAGGING
if self.draggingImage:
GlassWidget.hide()
if (self.currentDragOperation == 'none'
or not self.currentTargetElement):
if self.currentTargetElement:
# leave_event = self.makeDragEvent(event, 'dragleave',
# self.currentTargetElement)
self.fireDNDEvent('dragleave', self.currentTargetElement,
self.currentDropWidget)
# self.currentDropWidget.onDragLeave(leave_event)
# self.finalize(leave_event)
else:
self.currentDragOperation = 'none'
self.returnDrag()
else:
# self.dragDataStore.mode = READ_ONLY
# drop_event = self.makeDragEvent(event, 'drop',
# self.currentTargetElement)
drop_event = self.fireDNDEvent('drop',
self.currentTargetElement,
self.currentDropWidget)
#self.dropEffect = self.currentDragOperation
# self.currentDropWidget.onDrop(drop_event)
# self.finalize(drop_event)
if isCanceled(drop_event):
self.currentDragOperation = drop_event.dataTransfer.dropEffect
else:
self.currentDragOperation = 'none'
self.zapDragImage()
#self.dropEffect = self.currentDragOperation
self.fireDNDEvent('dragend', None, self.dragWidget)
def onMouseUp(self, sender, x, y):
# event = DOM.eventGetCurrentEvent()
self.dragging = NOT_DRAGGING
if self.draggingImage:
GlassWidget.hide()
if (self.currentDragOperation == 'none'
or not self.currentTargetElement):
if self.currentTargetElement:
# leave_event = self.makeDragEvent(event, 'dragleave',
# self.currentTargetElement)
self.fireDNDEvent('dragleave', self.currentTargetElement,
self.currentDropWidget)
# self.currentDropWidget.onDragLeave(leave_event)
# self.finalize(leave_event)
else:
self.currentDragOperation = 'none'
self.returnDrag()
else:
# self.dragDataStore.mode = READ_ONLY
# drop_event = self.makeDragEvent(event, 'drop',
# self.currentTargetElement)
drop_event = self.fireDNDEvent('drop', self.currentTargetElement,
self.currentDropWidget)
#self.dropEffect = self.currentDragOperation
# self.currentDropWidget.onDrop(drop_event)
# self.finalize(drop_event)
if isCanceled(drop_event):
self.currentDragOperation = drop_event.dataTransfer.dropEffect
else:
self.currentDragOperation = 'none'
self.zapDragImage()
#self.dropEffect = self.currentDragOperation
self.fireDNDEvent('dragend', None, self.dragWidget)
def onMouseMove(self, sender, x, y):
event = DOM.eventGetCurrentEvent()
self.mouseEvent = event
button = DOM.eventGetButton(event)
if not button == Event.BUTTON_LEFT:
return
## The following commented code lets the native dnd happen in IE. sucks.
## But it may enable dragging our widgets out of IE into other apps.
# else:
# try:
# self.dragWidget.getElement().dragDrop()
# return
# except:
# pass
# Adjust x and y to absolute coordinates.
x, y = eventCoordinates(event)
if self.dragging == DRAGGING_NO_MOVEMENT_YET:
self.origMouseX = x
self.origMouseY = y
self.currentDragOperation = 'none'
fromElement = self.dragWidget.getElement()
# Is the widget itself draggable?
try:
draggable = fromElement.draggable
except:
draggable = False
# if not, find the draggable element at (x, y) in the widget
if not draggable:
fromElement = findDraggable(sender.getElement(),
self.origMouseX, self.origMouseY)
# Nothing draggable found. return.
if fromElement is None:
self.dragging = NOT_DRAGGING
return
# Get the location for the dragging widget
#self.absParent = None
#self.absParent = self.dragWidget.getParent()
#self.absLeft = DOM.getStyleAttribute(fromElement, 'left')
#print self.absLeft
#self.absTop = DOM.getStyleAttribute(fromElement, 'top')
#print self.absTop
#self.origTop = DOM.getAbsoluteTop(fromElement) + parent.getAbsoluteTop()
#self.origLeft = DOM.getAbsoluteLeft(fromElement) + parent.getAbsoluteLeft()
self.origTop = DOM.getAbsoluteTop(fromElement)
self.origLeft = DOM.getAbsoluteLeft(fromElement)
#self.glassTop = DOM.getAbsoluteTop(fromElement.offsetParent)
#self.glassLeft = DOM.getAbsoluteTop(fromElement.offsetParent)
position_absolute = DOM.getStyleAttribute(fromElement,
'position') == 'absolute'
if position_absolute:
self.dragLeftOffset = (
self.origMouseX -
DOM.getAbsoluteLeft(fromElement.offsetParent))
self.dragTopOffset = (
self.origMouseY -
DOM.getAbsoluteTop(fromElement.offsetParent))
else:
self.dragLeftOffset = self.origMouseX - self.origLeft
self.dragTopOffset = self.origMouseY - self.origTop
# self.setDragImage(fromElement,
# self.origMouseX - self.origLeft,
# self.origMouseY - self.origTop)
self.dragDataStore.elements = [fromElement]
dragStartEvent = self.fireDNDEvent('dragstart', None,
self.dragWidget)
if not isCanceled(dragStartEvent):
self.initFeedbackImage()
RootPanel().add(self.draggingImage)
self.setDragImageLocation(x, y)
self.dragging = ACTIVELY_DRAGGING
GlassWidget.show(self)
elif self.dragging == ACTIVELY_DRAGGING:
try:
doc().selection.empty()
except:
wnd().getSelection().removeAllRanges()
self.setDragImageLocation(x, y)
# If we are still working on the previous iteration, or if we have
# done this recently, we'll wait for the next event.
if self.dragBusy or time.time() - self.drag_time < 0.25:
return
self.doDrag(event, x, y)
self.drag_time = time.time()
def onMouseMove(self, sender, x, y):
event = DOM.eventGetCurrentEvent()
self.mouseEvent = event
button = DOM.eventGetButton(event)
if not button == Event.BUTTON_LEFT:
return
## The following commented code lets the native dnd happen in IE. sucks.
## But it may enable dragging our widgets out of IE into other apps.
# else:
# try:
# self.dragWidget.getElement().dragDrop()
# return
# except:
# pass
# Adjust x and y to absolute coordinates.
x, y = eventCoordinates(event)
if self.dragging == DRAGGING_NO_MOVEMENT_YET:
self.origMouseX = x
self.origMouseY = y
self.currentDragOperation = 'none'
fromElement = self.dragWidget.getElement()
# Is the widget itself draggable?
try:
draggable = fromElement.draggable
except:
draggable = False
# if not, find the draggable element at (x, y) in the widget
if not draggable:
fromElement = findDraggable(sender.getElement(),
self.origMouseX, self.origMouseY)
# Nothing draggable found. return.
if fromElement is None:
self.dragging = NOT_DRAGGING
return
# Get the location for the dragging widget
#self.absParent = None
#self.absParent = self.dragWidget.getParent()
#self.absLeft = DOM.getStyleAttribute(fromElement, 'left')
#print self.absLeft
#self.absTop = DOM.getStyleAttribute(fromElement, 'top')
#print self.absTop
#self.origTop = DOM.getAbsoluteTop(fromElement) + parent.getAbsoluteTop()
#self.origLeft = DOM.getAbsoluteLeft(fromElement) + parent.getAbsoluteLeft()
self.origTop = DOM.getAbsoluteTop(fromElement)
self.origLeft = DOM.getAbsoluteLeft(fromElement)
#self.glassTop = DOM.getAbsoluteTop(fromElement.offsetParent)
#self.glassLeft = DOM.getAbsoluteTop(fromElement.offsetParent)
position_absolute = DOM.getStyleAttribute(fromElement,
'position') == 'absolute'
if position_absolute:
self.dragLeftOffset = (self.origMouseX -
DOM.getAbsoluteLeft(fromElement.offsetParent))
self.dragTopOffset = (self.origMouseY -
DOM.getAbsoluteTop(fromElement.offsetParent))
else:
self.dragLeftOffset = self.origMouseX - self.origLeft
self.dragTopOffset = self.origMouseY - self.origTop
# self.setDragImage(fromElement,
# self.origMouseX - self.origLeft,
# self.origMouseY - self.origTop)
self.dragDataStore.elements = [fromElement]
dragStartEvent = self.fireDNDEvent('dragstart', None,
self.dragWidget)
if not isCanceled(dragStartEvent):
self.initFeedbackImage()
RootPanel().add(self.draggingImage)
self.setDragImageLocation(x, y)
self.dragging = ACTIVELY_DRAGGING
GlassWidget.show(self)
elif self.dragging == ACTIVELY_DRAGGING:
try:
doc().selection.empty()
except:
wnd().getSelection().removeAllRanges()
self.setDragImageLocation(x, y)
# If we are still working on the previous iteration, or if we have
# done this recently, we'll wait for the next event.
if self.dragBusy or time.time() - self.drag_time < 0.25:
return
self.doDrag(event, x, y)
self.drag_time = time.time()
