41 lines
1.9 KiB
Plaintext
41 lines
1.9 KiB
Plaintext
title: MacroInternals
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! Macro Fields
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Macros are implemented as conventional JavaScript modules that export a single variable called `macro` that contains these fields:
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|!Field Name |!Description |
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|`name` |The name of the macro |
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|`params` |A hashmap of the parameters accepted by the macro (see below) |
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|`events` |An optional hashmap of event handling functions (see below) |
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|`execute` |The macro rendering function (see below) |
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|`refreshInDom` |The optional macro rerendering function (see below) |
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|`dependentAll` |True if the macro needs access to all available tiddlers |
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! Macro Parameters
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The `params` hashmap provides the following fields about each parameter:
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|!Param Field Name |!Description |
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|`byName` |Provided if the parameter should be referenced by name. The value can be `true` or `"default"` to indicate that anonymous parameters are acceptable |
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|`byPos` |Provided if the parameter should be referenced by its numerical position (0-based) |
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|`type` |The type of the parameter, either `text` or `tiddler` (used for dependency tracking) |
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|`skinny` |True if the parameter is only dependent on the skinny fields of the target tiddler. The default is `false` which means that the target tiddler is treated as a fat dependency |
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! Macro Rendering
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The `execute` function should prepare the macro output. It is invoked with `this` pointing to the MacroNode object representing this macro invocation.
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!Macro Rerendering
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The `refreshInDom` function is called with the following parameters:
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|!Param Name |!Description |
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|`changes` |Hashmap of `{title: "created|modified|deleted"}` |
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!Macro Event Handlers
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Event handlers are called with the following parameters:
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|!Param Name |!Description |
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|`event` |The DOM node containing the existing rendering of the macro |
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Event handlers should return `false` if they handle the event (and generally should also call `event.preventDefault()`), and `true` if they do not.
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