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19 lines
1.1 KiB
Markdown
19 lines
1.1 KiB
Markdown
---
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layout: editable
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title: Documentation
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---
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To provide different kinds of documentation support (tooltips on **Ctrl-hover**, quick documentation popup etc.), the plugin needs to provide an implementation of the
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[DocumentationProvider](https://github.com/JetBrains/intellij-community/blob/master/platform/lang-api/src/com/intellij/lang/documentation/DocumentationProvider.java)
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interface and register it in the `lang.documentationProvider` extension point.
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A standard base class for such implementations is available in the class
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[AbstractDocumentationProvider](https://github.com/JetBrains/intellij-community/blob/master/platform/lang-api/src/com/intellij/lang/documentation/AbstractDocumentationProvider.java).
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**Example**:
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[DocumentationProvider](https://github.com/JetBrains/intellij-community/blob/master/plugins/properties/src/com/intellij/lang/properties/PropertiesDocumentationProvider.java)
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for
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[Properties language plugin](https://github.com/JetBrains/intellij-community/blob/master/plugins/properties/)
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The `getQuickNavigateInfo()` method returns the text to be displayed when the user holds the mouse over an element with ```Ctrl``` pressed.
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