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Player setHeight sends frameResize postMessage in LTI contexts #1729

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Player setHeight sends frameResize postMessage in LTI contexts #1729

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15 changes: 14 additions & 1 deletion src/components/widget-player.jsx
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Original file line number Diff line number Diff line change
Expand Up @@ -368,7 +368,7 @@ const WidgetPlayer = ({instanceId, playId, minHeight=0, minWidth=0,showFooter=tr
}
else if( ! ['react-devtools-content-script', 'react-devtools-bridge', 'react-devtools-inject-backend'].includes(e.data.source)) {
throw new Error(
`Post message Origin does not match. Expected: ${expectedOrigin}, Actual: ${origin}`
`Post message Origin does not match. Expected: ${window.BASE_URL} || ${window.STATIC_CROSSDOMAIN}, Actual: ${origin}`
)
}
}
Expand Down Expand Up @@ -544,6 +544,19 @@ const WidgetPlayer = ({instanceId, playId, minHeight=0, minWidth=0,showFooter=tr
const min_h = inst.widget.height
let desiredHeight = Math.max(h, min_h)
setAttributes((oldData) => ({...oldData, height: `${desiredHeight}px`}))


const params = new URLSearchParams(window.location.search)
// The presence of the token param indicates an LTI play. Send the frameResize postMessage to the parent frame (the LMS)
if (params.get('token')) {
window.parent.postMessage(
{
subject: 'lti.frameResize',
height: desiredHeight + 60, // add 60 to desiredHeight for footer
},
'*'
)
}
}

const _setVerticalScroll = location => {
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