How to auto start(initialize) plugin on project loaded?

Answered

Permanently deleted user

Created January 04, 2019 07:13

Hi, I'm new to Java and plugin development!

I tried to make simple plugin with https://www.jetbrains.org/intellij/sdk/docs/basics/getting_started.html

But the tutorial is with doing some action (like keyboard action).

In plugin.xml, (<action class="{ACTION CLASS}">) 'ACTION CLASS' is initialized after some keyboard action. but I want to make not like this, just initialize on project loaded

To make syntax highlighter and bubble tooltip on mouse hover, how can I register actions in plugin.xml file?

5 comments

Aleksey Pivovarov

Created January 04, 2019 11:11

If you need to execute some code when Project is opened, you can use `com.intellij.openapi.startup.StartupActivity`:

<extensions defaultExtensionNs="com.intellij">
  <postStartupActivity implementation="com.MyStartupActivity"/>
</extensions>

Or you can register `com.intellij.openapi.components.ProjectComponent` to create an instance of your class for each Project:

<project-components>
  <component>
    <implementation-class>com.MyComponent</implementation-class>
  </component>
</project-components>

See https://www.jetbrains.org/intellij/sdk/docs/basics/plugin_structure/plugin_components.html

Likely, implementing a syntax highlighter via action in plugin.xml is a wrong approach.
See https://www.jetbrains.org/intellij/sdk/docs/tutorials/custom_language_support_tutorial.html and https://www.jetbrains.org/intellij/sdk/docs/reference_guide/custom_language_support.html

Permanently deleted user

Created January 04, 2019 11:21

@Aleksey Pivovarov

Thanks! Really helpful.

and..one more question, using 'StartupActivity' is not support for each project?

Thanks

Aleksey Pivovarov

Created January 04, 2019 11:37

Only one instance of `StartupActivity` will be created created, but `void runActivity(Project project);` method will be called for each project.

Rishabhdeepsingh98

Created October 15, 2021 21:22

I am getting this error

```

java.lang.Throwable: Only bundled plugin can define com.intellij.startupActivity: PluginDescriptor(name=JHelper, id=name.admitriev.jhelper, descriptorPath=plugin.xml, path=~/workspace/github/JHelper/build/idea-sandbox/plugins/JHelper, version=0.23, package=null)

```

Aleksey Pivovarov

Created October 15, 2021 23:07

You're using wrong EP - it should be "postStartupActivity", not "startupActivity".

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