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Fix a regression that broke scrolling to CFIs with zero offset pointing to text surrounded by a range wrapper

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Kovid Goyal 2020-08-19 21:59:00 +05:30
parent 1f1d8024cb
commit 9dadd1a1a4
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1 changed files with 10 additions and 0 deletions
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10
src/pyj/read_book/cfi.pyj
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@ -590,6 +590,9 @@ def decode_with_range(cfi, doc): # {{{
# We can only create a meaningful range if the node length is
# positive and nonzero.
node_len = node.nodeValue.length if node.nodeValue else 0
if not node_len and node.nextSibling?.dataset?.calibreRangeWrapper and node.nextSibling.firstChild?.nodeType is Node.TEXT_NODE:
node = node.nextSibling.firstChild
node_len = node.nodeValue.length if node.nodeValue else 0
if node_len:
range_ = ndoc.createRange()
@ -607,6 +610,9 @@ def decode_with_range(cfi, doc): # {{{
if not rect:
print(str.format("Could not find caret position for {} (offset: {})", cfi, decoded.offset))
range_ = None
else:
print(f'Caret offset pointed to an empty text node or a non-text node for {cfi}, (offset: {decoded.offset})')
range_ = None
# Augment decoded with range, if found
decoded.range = range_
@ -762,6 +768,10 @@ def scroll_to(cfi, callback, doc): # {{{
callback(doc_x, doc_y)
else:
node = decoded.node
if node.nodeType is Node.TEXT_NODE:
node = decoded.node = node.parentNode
if not node.scrollIntoView:
return
scroll_viewport.scroll_into_view(node)
fn = def():