diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/dom_utils.coffee | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/lib/dom_utils.coffee b/lib/dom_utils.coffee index 2ae9412e..9d4df1b1 100644 --- a/lib/dom_utils.coffee +++ b/lib/dom_utils.coffee @@ -295,5 +295,24 @@ DomUtils = document.body.removeChild div coordinates + # Get the text content of an element (and its descendents), but omit the text content of previously-visited + # nodes. + # NOTE(smblott). This is currently O(N^2) (when called on N elements). An alternative would be to mark + # each node visited, and then clear the marks when we're done. + textContent: do -> + visitedNodes = null + reset: -> visitedNodes = [] + get: (element) -> + nodes = document.createTreeWalker element, NodeFilter.SHOW_TEXT + texts = + while node = nodes.nextNode() + continue unless node.nodeType == 3 + continue if node in visitedNodes + text = node.data.trim() + continue unless 0 < text.length + visitedNodes.push node + text + texts.join " " + root = exports ? window root.DomUtils = DomUtils |