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36 lines
2.3 KiB
Markdown
36 lines
2.3 KiB
Markdown
# Maximum Open Projects Sample [][docs]
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*Reference: [Plugin Services in IntelliJ SDK Docs][docs:plugin_services]*
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## Quickstart
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Maximum Open Projects Sample implements a `ProjectManagerListener` with two methods applied to check if the current projects have been opened or closed.
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Each method refers to the `ProjectCountingService` service registered as an `applicationService` extension point.
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It provides methods to increase and decrease the global counter of the currently opened projects in the IDE.
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After opening each one, a message dialog is presented to the user with the current number.
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### Extension Points
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| Name | Implementation | Extension Point Class |
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| --------------------------------- | ----------------------------------------------------- | --------------------- |
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| `com.intellij.applicationService` | [ProjectCountingService][file:ProjectCountingService] | |
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*Reference: [Plugin Extension Points in IntelliJ SDK Docs][docs:ep]*
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### Application Listeners
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| Name | Implementation | Extension Point Class |
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| -------- | --------------------------------------------------------- | ---------------------------------------------------- |
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| listener | [ProjectOpenCloseListener][file:ProjectOpenCloseListener] | [ProjectManagerListener][sdk:ProjectManagerListener] |
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*Reference: [Plugin Listeners in IntelliJ SDK Docs][docs:listeners]*
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[docs]: https://www.jetbrains.org/intellij/sdk/docs
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[docs:plugin_services]: https://jetbrains.org/intellij/sdk/docs/basics/plugin_structure/plugin_services.html
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[docs:ep]: https://www.jetbrains.org/intellij/sdk/docs/basics/plugin_structure/plugin_extensions.html
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[docs:listeners]: https://jetbrains.org/intellij/sdk/docs/basics/plugin_structure/plugin_listeners.html
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[file:ProjectCountingService]: ./src/main/java/org/intellij/sdk/maxOpenProjects/ProjectCountingService.java
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[file:ProjectOpenCloseListener]: ./src/main/java/org/intellij/sdk/maxOpenProjects/ProjectOpenCloseListener.java
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[sdk:ProjectManagerListener]: upsource:///platform/projectModel-api/src/com/intellij/openapi/project/ProjectManagerListener.java
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