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plugin_components.md: formatting

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Yann Cébron 2021-04-21 14:39:51 +02:00
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topics/basics/plugin_structure/plugin_components.md
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@ -1,6 +1,6 @@
[//]: # (title: Plugin Components)
<!-- Copyright 2000-2020 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
<!-- Copyright 2000-2021 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
> When writing new plugins, creating Components should be avoided.
> Any existing Components should be migrated to services, extensions, or listeners (see below).
@ -31,7 +31,7 @@ To subscribe to events, use a [listener](plugin_listeners.md) or create an [exte
Executing code on application startup should be avoided whenever possible because it slows down startup.
Plugin code should only be executed when projects are opened (see [Project Open](#project-open)) or when the user invokes an action of a plugin.
If this cannot be avoided, add a [listener](plugin_listeners.md) subscribing to the [AppLifecycleListener](upsource:///platform/platform-impl/src/com/intellij/ide/AppLifecycleListener.java) topic.
If this cannot be avoided, add a [listener](plugin_listeners.md) subscribing to the [`AppLifecycleListener`](upsource:///platform/platform-impl/src/com/intellij/ide/AppLifecycleListener.java) topic.
To execute an activity in background on IDE startup (e.g., to warm up caches), use [`PreloadingActivity`](upsource:///platform/platform-impl/src/com/intellij/openapi/application/PreloadingActivity.java).
@ -40,10 +40,10 @@ To execute an activity in background on IDE startup (e.g., to warm up caches), u
To execute code when a project is being opened, use one of these two [extensions](plugin_extensions.md):
`com.intellij.postStartupActivity`
: [StartupActivity](upsource:///platform/core-api/src/com/intellij/openapi/startup/StartupActivity.java) for immediate execution on EDT. Implement `DumbAware` to indicate activity can run in background thread (in parallel with other such tasks).
: [`StartupActivity`](upsource:///platform/core-api/src/com/intellij/openapi/startup/StartupActivity.java) for immediate execution on EDT. Implement `DumbAware` to indicate activity can run in background thread (in parallel with other such tasks).
`com.intellij.backgroundPostStartupActivity`
: [StartupActivity.Background](upsource:///platform/core-api/src/com/intellij/openapi/startup/StartupActivity.java) for execution with 5 seconds delay in background thread (2019.3 or later).
: [`StartupActivity.Background`](upsource:///platform/core-api/src/com/intellij/openapi/startup/StartupActivity.java) for execution with 5 seconds delay in background thread (2019.3 or later).
Any long-running or CPU intensive tasks should be made visible to users by using `ProgressManager.run(Task.Backgroundable)`.
Access to indices must be wrapped with `DumbService`, see also [General Threading Rules](general_threading_rules.md).