| <?xml version="1.0" encoding="UTF-8"?> |
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| <scxml |
| xmlns="http://www.w3.org/2005/07/scxml" |
| version="1.0" |
| name="MediaPlayerStateMachine" |
| initial="stopped" |
| datamodel="ecmascript" |
| > |
| <datamodel> |
| <data id="media"/> |
| </datamodel> |
| |
| <script> |
| function isValidMedia() { |
| var m = _event.data.media |
| return (m + "").length > 0 |
| } |
| </script> |
| |
| <state id="stopped"> |
| <transition event="tap" cond="isValidMedia()" target="playing"/> |
| </state> |
| |
| <state id="playing"> |
| <onentry> |
| <assign location="media" expr="_event.data.media"/> |
| <send event="playbackStarted"> |
| <param name="media" expr="media"/> |
| </send> |
| </onentry> |
| |
| <onexit> |
| <send event="playbackStopped"> |
| <param name="media" expr="media"/> |
| </send> |
| </onexit> |
| |
| <transition event="tap" cond="!isValidMedia() || media === _event.data.media" target="stopped"/> |
| <transition event="tap" cond="isValidMedia() && media !== _event.data.media" target="playing"/> |
| </state> |
| </scxml> |