From 8a4487fa696616f3476bd2af9545b54b9884e8ff Mon Sep 17 00:00:00 2001
From: Tagir Valeev <tagir.valeev@jetbrains.com>
Date: Mon, 14 Nov 2022 18:13:24 +0100
Subject: [PATCH] [spellchecker] ChangeTo: disable when document changed

Fixes EA-654994 - IOOBE: CharSequenceSubSequence.<init>

GitOrigin-RevId: 22b0e05a72db4dd083bbcca816ba25994e9e2c14
---
 .../spellchecker/quickfixes/ChangeTo.kt       | 24 ++++++++++++-------
 1 file changed, 15 insertions(+), 9 deletions(-)

diff --git a/spellchecker/src/com/intellij/spellchecker/quickfixes/ChangeTo.kt b/spellchecker/src/com/intellij/spellchecker/quickfixes/ChangeTo.kt
index 0af0bcb9337d..eeeecaa1b53e 100644
--- a/spellchecker/src/com/intellij/spellchecker/quickfixes/ChangeTo.kt
+++ b/spellchecker/src/com/intellij/spellchecker/quickfixes/ChangeTo.kt
@@ -7,7 +7,7 @@ import com.intellij.codeInsight.intention.HighPriorityAction
 import com.intellij.codeInsight.intention.choice.ChoiceTitleIntentionAction
 import com.intellij.codeInsight.intention.choice.ChoiceVariantIntentionAction
 import com.intellij.codeInsight.intention.choice.DefaultIntentionActionWithChoice
-import com.intellij.codeInsight.intention.impl.config.LazyEditor
+import com.intellij.openapi.editor.Document
 import com.intellij.openapi.editor.Editor
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.util.NlsSafe
@@ -50,6 +50,7 @@ class ChangeTo(typo: String, element: PsiElement, private val range: TextRange)
     override fun isAvailable(project: Project, editor: Editor?, file: PsiFile): Boolean {
       val suggestions = getSuggestions(project)
       if (suggestions.size <= index) return false
+      if (getRange(file.viewProvider.document) == null) return false
       suggestion = suggestions[index]
       return true
     }
@@ -57,17 +58,22 @@ class ChangeTo(typo: String, element: PsiElement, private val range: TextRange)
     override fun applyFix(project: Project, file: PsiFile, editor: Editor?) {
       val suggestion = suggestion ?: return
 
-      val myEditor = editor ?: LazyEditor(file)
+      val document = file.viewProvider.document
+      val myRange = getRange(document) ?: return
 
-      val myElement = pointer.element ?: return
-      val myRange = range.shiftRight(myElement.startOffset)
+      UpdateHighlightersUtil.removeHighlightersWithExactRange(document, project, myRange)
 
-      val myText = myEditor.document.getText(myRange)
-      if (myText != typo) return
+      document.replaceString(myRange.startOffset, myRange.endOffset, suggestion)
+    }
+    
+    private fun getRange(document: Document): TextRange? {
+      val element = pointer.element ?: return null
+      val range = range.shiftRight(element.startOffset)
+      if (range.startOffset < 0 || range.endOffset > document.textLength) return null
 
-      UpdateHighlightersUtil.removeHighlightersWithExactRange(myEditor.document, project, myRange)
-
-      myEditor.document.replaceString(myRange.startOffset, myRange.endOffset, suggestion)
+      val text = document.getText(range)
+      if (text != typo) return null
+      return range
     }
 
     override fun getFileModifierForPreview(target: PsiFile): FileModifier {