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IDEA-302967 Fix freeze in Features Suggester

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Invoking CopyPasteManager methods during write action is not safe.

GitOrigin-RevId: f3e032c111bbe8f8bceba67f87ea30a874e5b4b4
This commit is contained in:
Konstantin Hudyakov
2022-10-04 10:38:14 +03:00
committed by intellij-monorepo-bot
parent ceb2e26bfe
commit 60d7bbf49e
1 changed files with 7 additions and 18 deletions
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25
plugins/ide-features-trainer/src/training/featuresSuggester/suggesters/IntroduceVariableSuggester.kt
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@@ -1,15 +1,12 @@
package training.featuresSuggester.suggesters
import com.intellij.openapi.ide.CopyPasteManager
import com.intellij.psi.PsiElement
import training.featuresSuggester.FeatureSuggesterBundle
import training.featuresSuggester.NoSuggestion
import training.featuresSuggester.SuggesterSupport
import training.featuresSuggester.SuggestingUtils.asString
import training.featuresSuggester.Suggestion
import training.featuresSuggester.actions.*
import training.util.WeakReferenceDelegator
import java.awt.datatransfer.DataFlavor
class IntroduceVariableSuggester : AbstractFeatureSuggester() {
override val id: String = "Introduce variable"
@@ -49,7 +46,7 @@ class IntroduceVariableSuggester : AbstractFeatureSuggester() {
when (action) {
is BeforeEditorTextRemovedAction -> {
with(action) {
val deletedText = getCopiedContent(textFragment.text) ?: return NoSuggestion
val deletedText = textFragment.text.takeIf { it.isNotBlank() }?.trim() ?: return NoSuggestion
val psiFile = this.psiFile ?: return NoSuggestion
val contentOffset = caretOffset + textFragment.text.indexOfFirst { it != ' ' && it != '\n' }
val curElement = psiFile.findElementAt(contentOffset) ?: return NoSuggestion
@@ -60,6 +57,12 @@ class IntroduceVariableSuggester : AbstractFeatureSuggester() {
}
}
}
is EditorCutAction -> {
val data = extractedExprData ?: return NoSuggestion
if (data.exprText != action.text.trim()) {
extractedExprData = null
}
}
is ChildReplacedAction -> {
if (extractedExprData == null) return NoSuggestion
with(action) {
@@ -105,20 +108,6 @@ class IntroduceVariableSuggester : AbstractFeatureSuggester() {
return NoSuggestion
}
private fun getCopiedContent(text: String): String? {
if (text.isBlank()) return null
val content = text.trim()
val copyPasteManager = CopyPasteManager.getInstance()
return if (copyPasteManager.areDataFlavorsAvailable(DataFlavor.stringFlavor) &&
content == copyPasteManager.contents?.asString()?.trim()
) {
content
}
else {
null
}
}
private fun SuggesterSupport.isVariableDeclarationAdded(action: ChildReplacedAction): Boolean {
return isExpressionStatement(action.oldChild) && isVariableDeclaration(action.newChild)
}