Do not break additional DocumentFilters #7903
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dbalek
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Oct 29, 2024
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This PR improves behaviour of
CloneableEditorSupportin that it will not break additionalDocumentFilters which may be attached to the AbstractDocument.If a plugin registers a filter for a document, the
CloneableEditorSupportwill erase that filter on document's reload, basically at some unexpected and uncontrolled point. This PR changes the impl so it will not remove the DocumentFilter which would unset the client's DocumentFilter and breaks the pass-through chain), but rather disables it.When the document is listened on again, and it's the same document (!) as the existing filter works with, the filter is re-enabled.
If the document reference changes, a new filter is created; the user must detect that and restore its own filter as the old Document is gone. This should happen mainly if the Document expires and is garbage-collected and is loaded again.