Errors in pagination event handler when raised with no spine item

[wisfan]

This issue is a Bug

Related issue(s) and/or pull request(s)

PR #409

Observed behaviour

Errors from pagination change handler when ExternalAgentSupport.updateContentDocument invoked with no spineItem.

Steps to reproduce

Easiest way to reproduce: use ScrollView, scroll through a spine item and observe the JS console.

ScrollView and ReflowableView both emit pagination events without setting spineItem and elementId in the event data. This causes errors when the data is passed through to ExternalAgentSupport.

Product

Only users of current develop branch, does not affect master

[danielweck]

Fixed reflow view: 6d8beaa#diff-5899c9a9fc900e9651da6e2d81f3025b

[danielweck]

TODO / TO-CHECK:

readium-shared-js/js/views/scroll_view.js

Line 281 in e9a676e

onPaginationChanged(self);

readium-shared-js/js/views/scroll_view.js

Line 554 in e9a676e

onPaginationChanged(self);