intellij-sdk-code-samples/code_samples/max_opened_projects

Maximum Open Projects Sample

Reference: Plugin Services in IntelliJ SDK Docs

Quickstart

Maximum Open Projects Sample implements a StartupActivity extension point to run on project open as well as a ProjectManagerListener for tracking projects being closed. Both use ProjectCountingService application-level light service. It provides methods to increase and decrease the counter of currently opened projects in the IDE. When opening more projects than the maximum allowed (3), a message dialog is shown.

Extension Points

Name	Implementation	Extension Point Class
com.intellij.postStartupActivity	ProjectOpenStartupActivity	StartupActivity

Application Listeners

Name	Implementation	Listener Class
listener	ProjectOpenCloseListener	ProjectManagerListener

Reference: Plugin Listeners in IntelliJ SDK Docs