/* Ċ Ġ* ĠJ its i , Ġthe ĠOpen Source ĠJava ĠVo IP Ġand ĠInstant ĠMessaging Ġclient . Ċ Ġ* Ċ Ġ* ĠCopyright Ġ@ Ġ 2 0 1 5 - Present Ġ 8 x 8 , ĠInc . Ċ Ġ* Ċ Ġ* ĠLicensed Ġunder Ġthe ĠApache ĠLicense , ĠVersion Ġ 2 . 0 Ġ( the Ġ" License "); Ċ Ġ* Ġyou Ġmay Ġnot Ġuse Ġthis Ġfile Ġexcept Ġin Ġcompliance Ġwith Ġthe ĠLicense . Ċ Ġ* ĠYou Ġmay Ġobtain Ġa Ġcopy Ġof Ġthe ĠLicense Ġat Ċ Ġ* Ċ Ġ* ĠĠĠĠ Ġhttp :// www . apache . org / licenses / LICENSE - 2 . 0 Ċ Ġ* Ċ Ġ* ĠUnless Ġrequired Ġby Ġapplicable Ġlaw Ġor Ġagreed Ġto Ġin Ġwriting , Ġsoftware Ċ Ġ* Ġdistributed Ġunder Ġthe ĠLicense Ġis Ġdistributed Ġon Ġan Ġ" AS ĠIS " ĠBASIS , Ċ Ġ* ĠWITHOUT ĠWARRANTIES ĠOR ĠCONDITIONS ĠOF ĠANY ĠKIND , Ġeither Ġexpress Ġor Ġimplied . Ċ Ġ* ĠSee Ġthe ĠLicense Ġfor Ġthe Ġspecific Ġlanguage Ġgoverning Ġpermissions Ġand Ċ Ġ* Ġlimitations Ġunder Ġthe ĠLicense . Ċ Ġ*/ Ċ package Ġorg . j its i . impl . protocol . x mpp Ċ Ċ sealed Ġclass ĠChat Room Member Presence ChangeEvent Ġconstructor ( ĊĠĠĠ Ġ/** ĊĠĠĠĠ Ġ* ĠThe Ġchat Ġroom Ġmember Ġthat Ġthe Ġevent Ġrel ates Ġto . ĊĠĠĠĠ Ġ*/ ĊĠĠĠ Ġval Ġchat Room Member : ĠChat Room Member Ċ ) Ġ{ ĊĠĠĠ Ġoverride Ġfun ĠtoString (): ĠString Ġ{ ĊĠĠĠĠĠĠĠ Ġreturn Ġjava Class . simple Name Ġ+ Ġ" Ġmember =" Ġ+ Ġchat Room Member ĊĠĠĠ Ġ} ĊĊĠĠĠ Ġclass ĠJo ined ( chat Room Member : ĠChat Room Member ) Ġ: ĠChat Room Member Presence ChangeEvent ( chat Room Member ) ĊĠĠĠ Ġclass ĠLeft ( chat Room Member : ĠChat Room Member ) Ġ: ĠChat Room Member Presence ChangeEvent ( chat Room Member ) ĊĠĠĠ Ġclass ĠK ick ed ( chat Room Member : ĠChat Room Member ) Ġ: ĠChat Room Member Presence ChangeEvent ( chat Room Member ) ĊĠĠĠ Ġ// ĠThe Ġstate Ġdidn 't Ġchanged , Ġbut Ġthe Ġpresence Ġextension Ġitself Ġwas Ġupdated . ĊĠĠĠ Ġclass ĠPres ence Updated ( chat Room Member : ĠChat Room Member ) Ġ: ĠChat Room Member Presence ChangeEvent ( chat Room Member ) Ċ } Ċ Ċ /** Ċ Ġ* ĠA Ġlistener Ġthat Ġwill Ġbe Ġnotified Ġof Ġchanges Ġin Ġthe Ġpresence Ġof Ġa Ġmember Ġin Ġa Ġparticular Ġchat Ġroom . ĠChanges Ġmay Ċ Ġ* Ġinclude Ġmember Ġbeing Ġkick ed , Ġjoin , Ġleft . Ċ Ġ* Ċ Ġ* Ġ@ author ĠEm il ĠI v ov Ċ Ġ*/ Ċ interface ĠChat Room Member Presence Listener Ġ{ ĊĠĠĠ Ġ/** ĊĠĠĠĠ Ġ* ĠCalled Ġto Ġnotify Ġinterested Ġparties Ġthat Ġa Ġchange Ġin Ġthe Ġpresence Ġof Ġa ĊĠĠĠĠ Ġ* Ġmember Ġin Ġa Ġparticular Ġchat Ġroom Ġhas Ġoccurred . ĠChanges Ġmay Ġinclude Ġmember ĊĠĠĠĠ Ġ* Ġbeing Ġkick ed , Ġjoin , Ġleft . ĊĠĠĠĠ Ġ* ĊĠĠĠĠ Ġ* Ġ@ param Ġevt Ġthe Ġ< tt > Chat Room Member Presence ChangeEvent </ tt > Ġinstance ĊĠĠĠĠ Ġ* Ġcontaining Ġthe Ġsource Ġchat Ġroom Ġand Ġtype , Ġand Ġreason Ġof Ġthe Ġpresence ĊĠĠĠĠ Ġ* Ġchange ĊĠĠĠĠ Ġ*/ ĊĠĠĠ Ġfun Ġmember Presence Changed ( evt : ĠChat Room Member Presence ChangeEvent ) Ċ } Ċ