vcs: Fix IOE if editor diff preview is created and disposed during dumb mode (IDEA-233734)

(cherry picked from commit 4c178b3ae82df8cd3be7effb03e64b141a3616d5) GitOrigin-RevId: 2bc9961c9b7022451ab55d261423f73b9cb13542

vcs: Fix IOE if editor diff preview is created and disposed during dumb mode (IDEA-233734)
(cherry picked from commit 4c178b3ae82df8cd3be7effb03e64b141a3616d5) GitOrigin-RevId: 2bc9961c9b7022451ab55d261423f73b9cb13542
93dc8127 · Konstantin Kolosovsky · intellij-monorepo-bot · a4a9c36d · 93dc8127
Commit 93dc8127 authored 5 years ago by Konstantin Kolosovsky Committed by intellij-monorepo-bot 5 years ago
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+3 -0
--- a/platform/vcs-impl/src/com/intellij/openapi/vcs/changes/EditorTabPreview.kt
+++ b/platform/vcs-impl/src/com/intellij/openapi/vcs/changes/EditorTabPreview.kt
@@ -9,6 +9,7 @@ import com.intellij.openapi.fileEditor.FileEditorManager
 import com.intellij.openapi.project.DumbAwareAction
 import com.intellij.openapi.project.DumbService
 import com.intellij.openapi.project.Project
+import com.intellij.openapi.util.Disposer.isDisposed
 import com.intellij.openapi.vcs.changes.actions.diff.lst.LocalChangeListDiffTool.ALLOW_EXCLUDE_FROM_COMMIT
 import com.intellij.openapi.vcs.changes.ui.ChangesTree
 import com.intellij.openapi.wm.ToolWindowManager
@@ -29,6 +30,8 @@ abstract class EditorTabPreview(private val diffProcessor: DiffRequestProcessor)
  fun installOn(tree: ChangesTree) =
    //do not open file aggressively on start up, do it later
    DumbService.getInstance(project).smartInvokeLater {
+      if (isDisposed(updatePreviewQueue)) return@smartInvokeLater
+
      tree.addSelectionListener(
        Runnable {
          updatePreviewQueue.queue(Update.create(this) {