时序图
这只是个提案，主题和内容可能改变.
非常欢迎您参与这个新特性的讨论。您的反馈、创意和建议可以帮助我们找寻适合的解决方案。
声明参与者
使用 concise or robust 关键字声明参与者, 选择哪个取决于所需的显示样式。
通过 @ 标注, 和 is 动词定义状态.
@startuml
robust "Web 浏览器" as WB
concise "Web 用户" as WU
@0
WU is 空闲
WB is 空闲
@100
WU is 等待中
WB is 处理中
@300
WB is 等待中
@enduml
增加消息
使用下述的语法增加对消息的描述。
@startuml
robust "Web 浏览器" as WB
concise "Web 用户" as WU
@0
WU is 空闲
WB is 空闲
@100
WU -> WB : URL
WU is 等待中
WB is 处理中
@300
WB is 等待中
@enduml
相对时间
It is possible to use relative time with @.
@startuml
robust "DNS Resolver" as DNS
robust "Web Browser" as WB
concise "Web User" as WU
@0
WU is Idle
WB is Idle
DNS is Idle
@+100
WU -> WB : URL
WU is Waiting
WB is Processing
@+200
WB is Waiting
WB -> DNS@+50 : Resolve URL
@+100
DNS is Processing
@+300
DNS is Idle
@enduml
Participant oriented
Rather than declare the diagram in chronological order, you can define it by participant.
@startuml
robust "Web Browser" as WB
concise "Web User" as WU
@WB
0 is idle
+200 is Proc.
+100 is Waiting
@WU
0 is Waiting
+500 is ok
@enduml
Setting scale
You can also set a specific scale.
@startuml
concise "Web User" as WU
scale 100 as 50 pixels
@WU
0 is Waiting
+500 is ok
@enduml
Initial state
You can also define an inital state.
@startuml
robust "Web Browser" as WB
concise "Web User" as WU
WB is Initializing
WU is Absent
@WB
0 is idle
+200 is Processing
+100 is Waiting
@WU
0 is Waiting
+500 is ok
@enduml
Intricated state
A signal could be in some undefined state.
@startuml
robust "Signal1" as S1
robust "Signal2" as S2
S1 has 0,1,2,hello
S2 has 0,1,2
@0
S1 is 0
S2 is 0
@100
S1 is {0,1} #SlateGrey
S2 is {0,1}
@200
S1 is 1
S2 is 0
@300
S1 is hello
S2 is {0,2}
@enduml
Hidden state
It is also possible to hide some state.
@startuml
concise "Web User" as WU
@0
WU is {-}
@100
WU is A1
@200
WU is {-}
@300
WU is {hidden}
@400
WU is A3
@500
WU is {-}
@enduml
Adding constraint
It is possible to display time constraints on the diagrams.
@startuml
robust "Web Browser" as WB
concise "Web User" as WU
WB is Initializing
WU is Absent
@WB
0 is idle
+200 is Processing
+100 is Waiting
WB@0 <-> @50 : {50 ms lag}
@WU
0 is Waiting
+500 is ok
@200 <-> @+150 : {150 ms}
@enduml
Adding texts
You can optionally add a title, a header, a footer, a legend and a caption:
@startuml
Title this is my title
header: some header
footer: some footer
legend
Some legend
end legend
caption some caption
robust "Web Browser" as WB
concise "Web User" as WU
@0
WU is Idle
WB is Idle
@100
WU is Waiting
WB is Processing
@300
WB is Waiting
@enduml
