Package com.intellij.openapi.application

Class PreloadingActivity

java.lang.Object

com.intellij.openapi.application.PreloadingActivity

public abstract class PreloadingActivity
extends java.lang.Object

An activity to be executed in background on IDE startup. It may load some classes or other configuration so that when something (e.g. an action) is invoked the first time in the UI, there's no visible pause while required stuff is being lazily loaded.

Preloading activities should not have any side effects except for improving subsequent performance, so that if they are not executed for any reason, the behavior of the IDE remains the same.

Being eager and unspecific, preloading should be considered last resort in optimization. Please prefer other ways of speeding up things, by e.g. reducing the amount of classloading and initialization necessary when some functionality is invoked the first time.

Field Summary

Fields

Modifier and Type	Field and Description
static ExtensionPointName<PreloadingActivity>	EP_NAME

Constructor Summary

Constructors

Constructor and Description
PreloadingActivity()

Method Summary

Modifier and Type	Method and Description
abstract void	preload(ProgressIndicator indicator) Perform the preloading.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EP_NAME

public static final ExtensionPointName<PreloadingActivity> EP_NAME

Constructor Detail

PreloadingActivity

public PreloadingActivity()

Method Detail

preload

public abstract void preload(ProgressIndicator indicator)

Perform the preloading.

Parameters:

indicator - a progress indicator for the background preloading process. Canceled if the application has exited. Long actions should periodically perform indicator.checkCanceled().