39 lines
1.5 KiB
Factor
39 lines
1.5 KiB
Factor
USING: help.syntax help.markup kernel math classes classes.tuple
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calendar models ;
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IN: models.delay
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HELP: delay
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{ $class-description "Delay models have the same value as their underlying model, however the value only changes after a timer expires. If the underlying model's value changes again before the timer expires, the timer restarts. Delay models are constructed by " { $link <delay> } "." }
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{ $examples
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"The following code displays a sliders and a label which is updated half a second after the slider stops changing:"
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{ $code
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"USING: models models.delay models.arrow models.range"
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"ui ui.gadgets ui.gadgets.labels ui.gadgets.sliders"
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"ui.gadgets.panes math.parser calendar ;"
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""
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"<pile>"
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"0 10 0 100 1 <range>"
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"[ horizontal <slider> add-gadget ]"
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"["
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" 1/2 seconds <delay>"
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" [ unparse ] <arrow>"
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" <label-control> add-gadget"
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"] bi"
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"\"Test\" open-window"
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}
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} ;
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HELP: <delay>
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{ $values { "model" model } { "timeout" duration } { "delay" delay } }
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{ $description "Creates a new instance of " { $link delay } ". The timeout must elapse from the time the underlying model last changed to when the delay model value is changed and its connections are notified." }
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{ $examples "See the example in the documentation for " { $link delay } "." } ;
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ARTICLE: "models.delay" "Delay models"
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"Delay models are used to implement delayed updating of gadgets in response to user input."
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{ $subsections
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delay
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<delay>
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} ;
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ABOUT: "models.delay"
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