Serge NOEL
68 lines
2.7 KiB
Plaintext
68 lines
2.7 KiB
Plaintext
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<meta name="generator" content="HTML Tidy for HTML5 for Apple macOS version 5.8.0">
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<title>JMRI: LogixNG Documentation</title>
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<meta name="author" content="Daniel Bergqvist">
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<meta name="keywords" content="logixng model railroad JMRI LogixNG PanelPro">
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<h1>LogixNG - Sockets</h1>
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<h2>Sockets</h2>
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<p>LogixNG is designed to be flexible and easy to extend. A major idea is that tools should
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not need to know details of expressions and actions.</p>
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<p>A LogixNG has a tree of Actions, Expressions, and more, and these are connected by
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sockets. The parent has one or more female sockets and every child has a male socket.</p>
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<p>When an Action or Expression is created and registered in its manager, it's given a male
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socket. And it's always thru the male socket that the Action or Expression is handled.</p>
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<p>When a LogixNG editor wants to create an action or expression to put into a female
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socket, it can ask the LogixNG_Manager which classes that is possible to connect to this
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female socket and then let the user select one of these.</p>
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<p>An action or expression can have any number of female sockets of any type, which means
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that the structure is very flexible. For example, the ActionIfThen action has a female
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Expression socket and a female Action socket. And the ActionDoStringAction has a female
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StringExpression and a female StringAction.</p>
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<p>The LogixNG toolsm for example the editor, doesn't need to know about the actions,
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expressions, and others, which means that completely new types can be added without needing
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to change the LogixNG tools.</p>
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<h2>Female sockets</h2>
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<p>The female sockets tells the LogixNG tools that there is a place to connect something.
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And the female socket can tell if any given male socket is compatible with this female
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socket.</p>
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<h2>Male sockets</h2>
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<p>The male sockets is used to plug in into a compatible female socket.</p>
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<p>The male sockets also handles some generic logic for their action or expression, for
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example debug tools and logging.</p>
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