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LibWeb: Handle when the last selected node does not contain text

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If the text-for-rendering of the last selected node is empty, the select
all implementation would end up setting the index to -1. This value is
used directly for a substring length in the copy text implementation,
thus would cause a failed assertion.
This commit is contained in:
Timothy Flynn 2021-07-14 09:11:34 -04:00 • committed by Andreas Kling
parent 22ab512f39
commit f7acd6aca5
1 changed files with 5 additions and 2 deletions
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7
Userland/Libraries/LibWeb/Page/BrowsingContext.cpp
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@ -305,8 +305,11 @@ void BrowsingContext::select_all()
VERIFY(last_layout_node);
int last_layout_node_index_in_node = 0;
if (is<Layout::TextNode>(*last_layout_node))
last_layout_node_index_in_node = verify_cast<Layout::TextNode>(*last_layout_node).text_for_rendering().length() - 1;
if (is<Layout::TextNode>(*last_layout_node)) {
auto const& text_for_rendering = verify_cast<Layout::TextNode>(*last_layout_node).text_for_rendering();
if (!text_for_rendering.is_empty())
last_layout_node_index_in_node = text_for_rendering.length() - 1;
}
layout_root->set_selection({ { first_layout_node, 0 }, { last_layout_node, last_layout_node_index_in_node } });
}