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14 lines
1.2 KiB
Plaintext
14 lines
1.2 KiB
Plaintext
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created: 20190928081852771
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modified: 20190928082758674
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tags: PluginMechanism
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title: Plugin Dependencies
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type: text/vnd.tiddlywiki
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The simplest form of dependency between plugins is that one plugin can declare itself to be a sub-plugin of another plugin by specifying that plugin in the `parent-plugin` [[field|Plugin Fields]]. Sub-plugins are displayed in the control panel plugin chooser within the expandable area of their parent plugin. For example, the official plugin library includes the [[CodeMirror Plugin]] and also more than a dozen sub-plugins that extend the CodeMirror plugin with optional functionality. Note that sub-plugins cannot themselves have further sub-plugins.
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Plugins can also use their `dependents` [[field|Plugin Fields]] to list the titles of any other plugins that should also be installed. Note that the list is not resolved recursively: dependents of dependents will not be installed.
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When installing a plugin from the plugin library, both the `parent-plugin` and `dependents` fields are used to determine any additional plugins to be installed.
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Note that the `dependents` field is also used by the ThemeMechanism and the LanguageMechanism to switch in dependent theme/language plugins.
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