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 # IDataExplorerPlugIn

 Last update: 30.07.2026 

interface [IDataExplorerPlugIn](index.md)

This is the interface that must be implemented by all Java Data Explorer plug-ins for ModelCenter. Please note that due to an issue in Java 8, we do not explicitly override [toString](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString--) here, but you still need to implement it.

## Functions

NameSummary[construct](construct.md)abstract fun [construct](construct.md)(dhid: [Long](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-long/index.html), freeDaX: [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html), dialogParent: [JFrame](https://docs.oracle.com/javase/8/docs/api/javax/swing/JFrame.html), pluginid: [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html), dh: [DataHistory](./../-data-history/index.md), mc: [ModelCenter](./../-model-center/index.md), context: [String](https://docs.oracle.com/javase/8/docs/api/java/lang/String.html)): [Container](https://docs.oracle.com/javase/8/docs/api/java/awt/Container.html)  
Construct your plug-in.[dataChanged](data-changed.md)abstract fun [dataChanged](data-changed.md)(varIndex: [Long](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-long/index.html), runIndex: [Long](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-long/index.html))  
Called by the Data Explorer to notify the plug-in that the data in the DataHistory has changed.[exportImage](export-image.md)abstract fun [exportImage](export-image.md)(hints: [String](https://docs.oracle.com/javase/8/docs/api/java/lang/String.html), filename: [String](https://docs.oracle.com/javase/8/docs/api/java/lang/String.html))  
Tells the plug-in to export an image to a file.[fromString](from-string.md)abstract fun [fromString](from-string.md)(s: [String](https://docs.oracle.com/javase/8/docs/api/java/lang/String.html))  
Called to restore the state of a Plug-In.[getPageTitle](get-page-title.md)abstract fun [getPageTitle](get-page-title.md)(): [String](https://docs.oracle.com/javase/8/docs/api/java/lang/String.html)  
Called by the Data Explorer to get the plug-in title.[getRequiredLicense](get-required-license.md)abstract fun [getRequiredLicense](get-required-license.md)(): [String](https://docs.oracle.com/javase/8/docs/api/java/lang/String.html)  
If this plot needs a license to operate, return the feature name in this function and ModelCenter will check it out for you.[getThumbnail](get-thumbnail.md)abstract fun [getThumbnail](get-thumbnail.md)(hints: [String](https://docs.oracle.com/javase/8/docs/api/java/lang/String.html)): [String](https://docs.oracle.com/javase/8/docs/api/java/lang/String.html)  
Called by the Data Explorer to get the name of a file that contains the thumbnail image.[invokeMenuItem](invoke-menu-item.md)abstract fun [invokeMenuItem](invoke-menu-item.md)(id: [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html))  
Called by the Data Explorer to notify the plug-in that a user has selected a menu item.[onEnd](on-end.md)abstract fun [onEnd](on-end.md)()  
Called by the Data Explorer to notify the plug-in that it is about to be destroyed[progressMeterStop](progress-meter-stop.md)abstract fun [progressMeterStop](progress-meter-stop.md)()  
Called by the Data Explorer to notify the plug-in that its progress meter has stopped[variablesChanged](variables-changed.md)abstract fun [variablesChanged](variables-changed.md)()  
Called by the Data Explorer to notify the plug-in that the variables in the DataHistory have changed.