[GitHub] blahah opened a new issue #25: error: context not equal to range's container

[GitBox <gi...@apache.org>]

blahah opened a new issue #25: error: context not equal to range's container
URL: https://github.com/apache/incubator-annotator/issues/25
 
 
   Hi, I'm trying to use annotator to allow generating an annotation from any arbitrary selection in a web page.
   
   I'm having an issue with `describeTextQuoteByRange` from `@annotator/dom`.
   
   If I modify the demo so that the `context` passed to `describeTextQuoteByRange` is anything other than the original value (`selectable`), it fails with the error:
   
   ```
   Uncaught (in promise) Error: Context not equal to range's container; not implemented.
       at quote.js:48
       at Generator.next (<anonymous>)
       at step (asyncToGenerator.js:10)
       at _next (asyncToGenerator.js:25)
       at asyncToGenerator.js:32
       at new Promise (<anonymous>)
       at asyncToGenerator.js:5
       at describeTextQuoteByRange (quote.js:21)
       at HTMLDocument.onSelectionChange (mount.js:26)
   ```
   
   I copied the approach used in the demo - I create a range using `var selectableRange = document.createRange()`, then add a node using `selectableRange.selectNodeContents(el)`.
   
   I tried using `document.body` as `el`, and various other elements larger than `selectable`, but they all give the same error. I also tried leaving out the `context` key from the options object, same result.
   
   Can you provide any insight into how this should be done?

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