docs/DesignPatern/Behavioral/diagrams/music_player_state.svg

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stroke-width: 1.0;"/><path d="M608.1719,211.7344 L608.1719,209.5781 L615.5625,209.5781 L615.5625,211.7344 L613.0938,211.7344 L613.0938,219.8125 L615.5625,219.8125 L615.5625,221.9688 L608.1719,221.9688 L608.1719,219.8125 L610.6406,219.8125 L610.6406,211.7344 L608.1719,211.7344 Z "/><text fill="#000000" font-family="sans-serif" font-size="12" font-style="italic" lengthAdjust="spacingAndGlyphs" textLength="57" x="657.25" y="213.1387">Interface</text><text fill="#000000" font-family="sans-serif" font-size="12" font-style="italic" lengthAdjust="spacingAndGlyphs" textLength="106" x="636.75" y="227.1074">MusicPlayerState</text><line style="stroke: #A80036; stroke-width: 1.5;" x1="539.5" x2="803.5" y1="234.9375" y2="234.9375"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="121" x="544.5" y="249.1479">-string statuseName;</text><line style="stroke: #A80036; stroke-width: 1.5;" x1="539.5" x2="803.5" y1="255.7422" y2="255.7422"/><text fill="#000000" font-family="sans-serif" font-size="11" font-style="italic" lengthAdjust="spacingAndGlyphs" textLength="182" x="544.5" y="269.9526">+play(MusicPlayer *player):void</text><text fill="#000000" font-family="sans-serif" font-size="11" font-style="italic" lengthAdjust="spacingAndGlyphs" textLength="192" x="544.5" y="282.7573">+pause(MusicPlayer *player):void</text><text fill="#000000" font-family="sans-serif" font-size="11" font-style="italic" lengthAdjust="spacingAndGlyphs" textLength="182" x="544.5" y="295.562">+stop(MusicPlayer *player):void</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="254" x="544.5" y="308.3667">+MusicPlayerState(string statuseName):void</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="105" x="544.5" y="321.1714">+getName():string</text><!--class MusicPlayer--><rect fill="#FEFECE" filter="url(#f1nk4iocht9amx)" height="124.8281" id="MusicPlayer" style="stroke: #A80036; stroke-width: 1.5;" width="240" x="186.5" y="8"/><ellipse cx="265.75" cy="24" fill="#ADD1B2" rx="11" ry="11" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M268.7188,29.6406 Q268.1406,29.9375 267.5,30.0781 Q266.8594,30.2344 266.1563,30.2344 Q263.6563,30.2344 262.3281,28.5938 Q261.0156,26.9375 261.0156,23.8125 Q261.0156,20.6875 262.3281,19.0313 Q263.6563,17.375 266.1563,17.375 Q266.8594,17.375 267.5,17.5313 Q268.1563,17.6875 268.7188,17.9844 L268.7188,20.7031 Q268.0938,20.125 267.5,19.8594 Q266.9063,19.5781 266.2813,19.5781 Q264.9375,19.5781 264.25,20.6563 Q263.5625,21.7188 263.5625,23.8125 Q263.5625,25.9063 264.25,26.9844 Q264.9375,28.0469 266.2813,28.0469 Q266.9063,28.0469 267.5,27.7813 Q268.0938,27.5 268.7188,26.9219 L268.7188,29.6406 Z "/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="73" x="286.25" y="28.1543">MusicPlayer</text><line style="stroke: #A80036; stroke-width: 1.5;" x1="187.5" x2="425.5" y1="40" y2="40"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="156" x="192.5" y="54.2104">+MusicPlayerState *status;</text><line style="stroke: #A80036; stroke-width: 1.5;" x1="187.5" x2="425.5" y1="60.8047" y2="60.8047"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="67" x="192.5" y="75.0151">+play():void</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="79" x="192.5" y="87.8198">+pause():void</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="69" x="192.5" y="100.6245">+stop():void</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="111" x="192.5" y="113.4292">+MusicPlayer():void</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="228" x="192.5" y="126.2339">+setState(MusicPlayerState *state):void</text><!--class StoppedState--><rect fill="#FEFECE" filter="url(#f1nk4iocht9amx)" height="86.4141" id="StoppedState" style="stroke: #A80036; stroke-width: 1.5;" width="191" x="462" y="27.5"/><ellipse cx="509.75" cy="43.5" fill="#ADD1B2" rx="11" ry="11" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M512.7188,49.1406 Q512.1406,49.4375 511.5,49.5781 Q510.8594,49.7344 510.1563,49.7344 Q507.6563,49.7344 506.3281,48.0938 Q505.0156,46.4375 505.0156,43.3125 Q505.0156,40.1875 506.3281,38.5313 Q507.6563,36.875 510.1563,36.875 Q510.8594,36.875 511.5,37.0313 Q512.1563,37.1875 512.7188,37.4844 L512.7188,40.2031 Q512.0938,39.625 511.5,39.3594 Q510.9063,39.0781 510.2813,39.0781 Q508.9375,39.0781 508.25,40.1563 Q507.5625,41.2188 507.5625,43.3125 Q507.5625,45.4063 508.25,46.4844 Q508.9375,47.5469 510.2813,47.5469 Q510.9063,47.5469 511.5,47.2813 Q512.0938,47 512.7188,46.4219 L512.7188,49.1406 Z "/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="87" x="530.25" y="47.6543">StoppedState</text><line style="stroke: #A80036; stroke-width: 1.5;" x1="463" x2="652" y1="59.5" y2="59.5"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="37" x="468" y="73.7104">public:</text><line style="stroke: #A80036; stroke-width: 1.5;" x1="463" x2="652" y1="80.3047" y2="80.3047"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="179" x="468" y="94.5151">+play(MusicPlayer *player):void</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="89" x="468" y="107.3198">StoppedState();</text><!--class PlayingState--><rect fill="#FEFECE" filter="url(#f1nk4iocht9amx)" height="86.4141" id="PlayingState" style="stroke: #A80036; stroke-width: 1.5;" width="194" x="688.5" y="27.5"/><ellipse cx="742.25" cy="43.5" fill="#ADD1B2" rx="11" ry="11" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M745.2188,49.1406 Q744.6406,49.4375 744,49.5781 Q743.3594,49.7344 742.6563,49.7344 Q740.1563,49.7344 738.8281,48.0938 Q737.5156,46.4375 737.5156,43.3125 Q737.5156,40.1875 738.8281,38.5313 Q740.1563,36.875 742.6563,36.875 Q743.3594,36.875 744,37.0313 Q744.6563,37.1875 745.2188,37.4844 L745.2188,40.2031 Q744.5938,39.625 744,39.3594 Q743.4063,39.0781 742.7813,39.0781 Q741.4375,39.0781 740.75,40.1563 Q740.0625,41.2188 740.0625,43.3125 Q740.0625,45.4063 740.75,46.4844 Q741.4375,47.5469 742.7813,47.5469 Q743.4063,47.5469 744,47.2813 Q744.5938,47 745.2188,46.4219 L745.2188,49.1406 Z "/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="78" x="762.75" y="47.6543">PlayingState</text><line style="stroke: #A80036; stroke-width: 1.5;" x1="689.5" x2="881.5" y1="59.5" y2="59.5"/><line style="stroke: #A80036; stroke-width: 1.5;" x1="689.5" x2="881.5" y1="67.5" y2="67.5"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="182" x="694.5" y="81.7104">pause(MusicPlayer *player):void</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="172" x="694.5" y="94.5151">stop(MusicPlayer *player):void</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="78" x="694.5" y="107.3198">PlayingState()</text><!--class PausedState--><rect fill="#FEFECE" filter="url(#f1nk4iocht9amx)" height="73.6094" id="PausedState" style="stroke: #A80036; stroke-width: 1.5;" width="191" x="918" y="33.5"/><ellipse cx="968.75" cy="49.5" fill="#ADD1B2" rx="11" ry="11" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M971.7188,55.1406 Q971.1406,55.4375 970.5,55.5781 Q969.8594,55.7344 969.1563,55.7344 Q966.6563,55.7344 965.3281,54.0938 Q964.0156,52.4375 964.0156,49.3125 Q964.0156,46.1875 965.3281,44.5313 Q966.6563,42.875 969.1563,42.875 Q969.8594,42.875 970.5,43.0313 Q971.1563,43.1875 971.7188,43.4844 L971.7188,46.2031 Q971.0938,45.625 970.5,45.3594 Q969.9063,45.0781 969.2813,45.0781 Q967.9375,45.0781 967.25,46.1563 Q966.5625,47.2188 966.5625,49.3125 Q966.5625,51.4063 967.25,52.4844 Q967.9375,53.5469 969.2813,53.5469 Q969.9063,53.5469 970.5,53.2813 Q971.0938,53 971.7188,52.4219 L971.7188,55.1406 Z "/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="81" x="989.25" y="53.6543">PausedState</text><line style="stroke: #A80036; stroke-width: 1.5;" x1="919" x2="1108" y1="65.5" y2="65.5"/><line style="stroke: #A80036; stroke-width: 1.5;" x1="919" x2="1108" y1="73.5" y2="73.5"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="179" x="924" y="87.7104">+play(MusicPlayer *player):void</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="84" x="924" y="100.5151">PausedState();</text><polygon fill="#FBFB77" filter="url(#f1nk4iocht9amx)" points="6,248,6,273.1328,495,273.1328,495,258,485,248,6,248" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#FBFB77" points="6,248,6,273.1328,495,273.1328,495,269.3308,538.1688,265.5,495,261.3308,495,258,485,248,6,248" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="485" x2="485" y1="248" y2="258"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="495" x2="485" y1="258" y2="258"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="468" x="12" y="265.0669">cout&lt;&lt;'Illegal state transition from '&lt;&lt;statuseName&lt;&lt;' to play' &lt;&lt;endl</text><polygon fill="#FBFB77" filter="url(#f1nk4iocht9amx)" points="848,248,848,273.1328,1339,273.1328,1339,258,1329,248,848,248" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#FBFB77" points="848,248,848,273.1328,1060.5146,273.1328,804.5,277.5,1068.5146,273.1328,1339,273.1328,1339,258,1329,248,848,248" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="1329" x2="1329" y1="248" y2="258"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="1339" x2="1329" y1="258" y2="258"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="470" x="854" y="265.0669">cout&lt;&lt;'Illegal state transition from '&lt;&lt;statuseName&lt;&lt;' to pause' &lt;endl</text><polygon fill="#FBFB77" filter="url(#f1nk4iocht9amx)" points="426,449,426,474.1328,917,474.1328,917,459,907,449,426,449" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#FBFB77" points="426,449,426,474.1328,917,474.1328,917,459,907,449,691.9433,449,804.5,289.5,683.9433,449,426,449" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="907" x2="907" y1="449" y2="459"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="917" x2="907" y1="459" y2="459"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="470" x="432" y="466.0669">cout&lt;&lt;'Illegal state transition from '&lt;&lt;statuseName&lt;&lt;' to stop' &lt;&lt;endl</text><!--link StoppedState to MusicPlayerState--><path d="M583.3684,113.6139 C594.4063,132.0105 607.691,154.1517 620.5591,175.5985 " fill="none" id="StoppedState-MusicPlayerState" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="none" points="626.6868,172.2059,630.9743,192.9572,614.6819,179.4088,626.6868,172.2059" style="stroke: #A80036; stroke-width: 1.0;"/><!--link PlayingState to MusicPlayerState--><path d="M759.6316,113.6139 C748.5937,132.0105 735.309,154.1517 722.4409,175.5985 " fill="none" id="PlayingState-MusicPlayerState" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="none" points="728.3181,179.4088,712.0257,192.9572,716.3132,172.2059,728.3181,179.4088" style="stroke: #A80036; stroke-width: 1.0;"/><!--link PausedState to MusicPlayerState--><path d="M946.7471,107.585 C908.05,129.0834 857.8351,156.9805 810.9087,183.0507 " fill="none" id="PausedState-MusicPlayerState" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="none" points="813.9983,189.342,793.1156,192.9358,807.1992,177.1038,813.9983,189.342" style="stroke: #A80036; stroke-width: 1.0;"/><!--link MusicPlayer to MusicPlayerState--><path d="M438.3104,139.1136 C471.9613,156.6306 508.1096,175.4474 541.6609,192.9125 " fill="none" id="MusicPlayer-MusicPlayerState" style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 7.0,7.0;"/><polygon fill="#FFFFFF" points="426.5202,132.9763,429.9954,139.2948,437.1644,138.5171,433.6892,132.1986,426.5202,132.9763" style="stroke: #A80036; stroke-width: 1.0;"/><!--
@startuml
skinparam classAttributeIconSize 0

interface "Interface \n MusicPlayerState" as MusicPlayerState{
   -string statuseName;
   +{abstract}play(MusicPlayer *player):void
   +{abstract}pause(MusicPlayer *player):void
   +{abstract}stop(MusicPlayer *player):void
   +MusicPlayerState(string statuseName):void
   +getName():string
}

class MusicPlayer{
    +MusicPlayerState *status;
    +play():void
    +pause():void
    +stop():void
    +MusicPlayer():void
    +setState(MusicPlayerState *state):void
}


class StoppedState{
public:
    +play(MusicPlayer *player):void 
    StoppedState();
}

 
class PlayingState{
    pause(MusicPlayer *player):void
    stop(MusicPlayer *player):void
    PlayingState()
}


class PausedState{
    + play(MusicPlayer *player):void
    PausedState();
}

StoppedState - -|>  MusicPlayerState
PlayingState - -|> MusicPlayerState
PausedState - -|>  MusicPlayerState

note "cout<<'Illegal state transition from '<<statuseName<<' to play' <<endl" as MusicPlayerStatePlay


note "cout<<'Illegal state transition from '<<statuseName<<' to pause' <endl" as MusicPlayerStatePause

note "cout<<'Illegal state transition from '<<statuseName<<' to stop' <<endl" as MusicPlayerStateStop



MusicPlayerStatePause -left.. MusicPlayerState::pause
MusicPlayerState::play -left.. MusicPlayerStatePlay
MusicPlayerStateStop -up.. MusicPlayerState::stop

MusicPlayer o..MusicPlayerState
@enduml

PlantUML version 1.2017.15(Mon Jul 03 18:45:34 CEST 2017)
(GPL source distribution)
Java Runtime: OpenJDK Runtime Environment
JVM: OpenJDK 64-Bit Server VM
Java Version: 11.0.8+10-post-Ubuntu-0ubuntu118.04.1
Operating System: Linux
OS Version: 5.4.0-47-generic
Default Encoding: UTF-8
Language: en
Country: US
--></g></svg>