def _iterNodesByType(self, nodeType, direction="next", pos=None):
if not pos:
pos = self.makeTextInfo(textInfos.POSITION_FIRST if direction ==
"next" else textInfos.POSITION_LAST)
obj = pos.innerTextInfo._startObj
if nodeType == "container":
while obj != self.rootNVDAObject:
if obj.role == controlTypes.Role.TABLE:
ti = self.makeTextInfo(obj)
yield browseMode.TextInfoQuickNavItem(nodeType, self, ti)
return
obj = obj.parent
return
roles = self.NODE_TYPES_TO_ROLES.get(nodeType)
if not roles:
raise NotImplementedError
# Find the first embedded object in the requested direction.
# Use the text, as enumerating IAccessibleHypertext means more cross-process calls.
offset = pos.innerTextInfo._start._startOffset
if direction == "next":
text = obj.IAccessibleTextObject.text(
offset + 1, obj.IAccessibleTextObject.nCharacters)
embed = text.find(textUtils.OBJ_REPLACEMENT_CHAR)
if embed != -1:
embed += offset + 1
else:
if offset > 0:
text = obj.IAccessibleTextObject.text(0, offset)
embed = text.rfind(textUtils.OBJ_REPLACEMENT_CHAR)
else:
# We're at the start; we can't go back any further.
embed = -1
log.debug("%s embedded object from offset %d: %d" %
(direction, offset, embed))
hli = -1 if embed == -1 else obj.iaHypertext.hyperlinkIndex(embed)
while True:
if hli != -1:
for embObj in self._iterEmbeddedObjs(obj.iaHypertext, hli,
direction):
if embObj.role in roles:
ti = self.makeTextInfo(embObj)
yield browseMode.TextInfoQuickNavItem(
nodeType, self, ti)
# No more embedded objects here.
# We started in an embedded object, so continue in the parent.
if obj == self.rootNVDAObject:
log.debug("At root, stopping")
break # Can't go any further.
log.debug("Continuing in parent")
# Get the index of the embedded object we just came from.
parent = obj.parent
if not getattr(parent, 'IAccessibleTextObject', None):
obj = parent
continue
hl = obj.IAccessibleObject.QueryInterface(IA2.IAccessibleHyperlink)
offset = hl.startIndex
obj = parent
hli = obj.iaHypertext.hyperlinkIndex(offset)
# Continue the walk from the next embedded object.
hli += 1 if direction == "next" else -1
def UIAParagraphQuicknavIterator(document, position, direction="next"):
if position:
curPosition = position
else:
curPosition = document.makeTextInfo(
textInfos.POSITION_LAST if direction ==
"previous" else textInfos.POSITION_FIRST)
stop = False
firstLoop = True
while not stop:
tempInfo = curPosition.copy()
tempInfo.expand(textInfos.UNIT_CHARACTER)
styleIDValue = getUIATextAttributeValueFromRange(
tempInfo._rangeObj, UIA_StyleIdAttributeId)
if styleIDValue == StyleId_Normal:
if not firstLoop or not position:
tempInfo.expand(textInfos.UNIT_PARAGRAPH)
yield browseMode.TextInfoQuickNavItem("paragraph", document,
tempInfo)
stop = (curPosition.move(textInfos.UNIT_PARAGRAPH,
1 if direction == "next" else -1) == 0)
firstLoop = False
