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| -rw-r--r-- | fxjs/README | 8 |
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diff --git a/fxjs/README b/fxjs/README index a38e746d4e..85c5edf79c 100644 --- a/fxjs/README +++ b/fxjs/README @@ -33,3 +33,11 @@ Slot 1's contents are determined by these tags: A FXJSE_CLASS_DESCRIPTOR pointer means to expect an actual v8 function object, and not an aligned pointer. +Because PDFium uses V8 for various unrelated purposes, there may be up to +four v8::Contexts (JS Global Objects) associated with each document. One is +used by FXJS and holds objects as described by the js_api_reference.pdf +specification. The others are used by FXJSE. + +FXJS requires that it can find itself whatever the current context might +be through a v8::Context's slot -- even if one of the FXJSE contexts is +current.
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