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59 lines
2.6 KiB
Plaintext
59 lines
2.6 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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|`types` |An array of the MIME types that the macro can render |
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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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|`render` |The macro rendering function (see below) |
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|`rerender` |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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|`type` |The type of the parameter, either `text` or `tiddler` (used for dependency tracking) |
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|`rel` |The relationship for parameters of type tiddler - either "link" or "include" |
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|`optional` |`true` if the parameter is optional |
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! Macro Rendering
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The `render` function should return the new text representation of the macro output. It is called with the following parameters:
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|!Param Name |!Description |
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|`type` |The target MIME type for rendering the macro |
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|`tiddler` |The tiddler in whose context the macro is being rendered |
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|`store` |The `WikiStore` object to be used |
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|`params` |The macro parameters as a hashmap |
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|`content` |The rendered text of the children of the macro |
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!Macro Rerendering
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The `rerender` function is called with the following parameters:
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|!Param Name |!Description |
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|`node` |The DOM node containing the existing rendering of the macro |
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|`changes` |Hashmap of `{title: "created|modified|deleted"}` |
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|`type` |The target MIME type for rendering the macro |
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|`tiddler` |The tiddler in whose context the macro is being rendered |
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|`store` |The `WikiStore` object to be used |
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|`params` |The macro parameters as a hashmap |
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|`content` |The rendered text of the children of the macro |
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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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|`node` |Hashmap of `{title: "created|modified|deleted"}` |
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|`tiddler` |The tiddler in whose context the macro is being rendered |
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|`store` |The `WikiStore` object to be used |
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|`params` |The macro parameters as a hashmap |
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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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