FIR IDE: Use single TextRange as selection instead of two ints

idea/idea-fir/tests/org/jetbrains/kotlin/shortenRefs/AbstractFirShortenRefsTest.kt

@@ -5,6 +5,7 @@
 package org.jetbrains.kotlin.shortenRefs
 
 import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.util.TextRange
 import org.jetbrains.kotlin.AbstractImportsTest
 import org.jetbrains.kotlin.idea.frontend.api.analyze
 import org.jetbrains.kotlin.idea.util.application.executeWriteCommand
@@ -19,12 +20,12 @@ abstract class AbstractFirShortenRefsTest : AbstractImportsTest() {
         val selectionModel = myFixture.editor.selectionModel
         if (!selectionModel.hasSelection()) error("No selection in input file")
 
-        val (startOffset, endOffset) = runReadAction { selectionModel.selectionStart to selectionModel.selectionEnd }
+        val selection = runReadAction { TextRange(selectionModel.selectionStart, selectionModel.selectionEnd) }
 
         val shortenings = executeOnPooledThread {
             runReadAction {
                 analyze(file) {
-                    collectPossibleReferenceShortenings(file, startOffset, endOffset)
+                    collectPossibleReferenceShortenings(file, selection)
                 }
             }
         }

idea/idea-frontend-api/src/org/jetbrains/kotlin/idea/frontend/api/KtAnalysisSession.kt

@@ -5,6 +5,7 @@
 
 package org.jetbrains.kotlin.idea.frontend.api
 
+import com.intellij.openapi.util.TextRange
 import com.intellij.psi.PsiElement
 import org.jetbrains.kotlin.idea.frontend.api.calls.KtCall
 import org.jetbrains.kotlin.idea.frontend.api.components.*
@@ -179,5 +180,6 @@ abstract class KtAnalysisSession(final override val token: ValidityToken) : Vali
     fun KtReturnExpression.getReturnTargetSymbol(): KtCallableSymbol? =
         expressionHandlingComponent.getReturnExpressionTargetSymbol(this)
 
-    fun collectPossibleReferenceShortenings(file: KtFile, from: Int, to: Int) = referenceShortener.collectShortenings(file, from, to)
+    fun collectPossibleReferenceShortenings(file: KtFile, selection: TextRange): ShortenCommand =
+        referenceShortener.collectShortenings(file, selection)
 }

idea/idea-frontend-api/src/org/jetbrains/kotlin/idea/frontend/api/components/KtReferenceShortener.kt

@@ -5,10 +5,11 @@
 
 package org.jetbrains.kotlin.idea.frontend.api.components
 
+import com.intellij.openapi.util.TextRange
 import org.jetbrains.kotlin.psi.KtFile
 
 abstract class KtReferenceShortener : KtAnalysisSessionComponent() {
-    abstract fun collectShortenings(file: KtFile, from: Int, to: Int): ShortenCommand
+    abstract fun collectShortenings(file: KtFile, selection: TextRange): ShortenCommand
 }
 
 interface ShortenCommand {

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/components/KtFirReferenceShortener.kt

@@ -6,6 +6,7 @@
 package org.jetbrains.kotlin.idea.frontend.api.fir.components
 
 import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.util.TextRange
 import com.intellij.psi.SmartPsiElementPointer
 import com.intellij.util.containers.addIfNotNull
 import org.jetbrains.kotlin.descriptors.ClassKind
@@ -59,7 +60,7 @@ internal class KtFirReferenceShortener(
     override val token: ValidityToken,
     override val firResolveState: FirModuleResolveState,
 ) : KtReferenceShortener(), KtFirAnalysisSessionComponent {
-    override fun collectShortenings(file: KtFile, from: Int, to: Int): ShortenCommand {
+    override fun collectShortenings(file: KtFile, selection: TextRange): ShortenCommand {
         resolveFileToBodyResolve(file)
         val firFile = file.getOrBuildFirOfType<FirFile>(firResolveState)