Use ModalityState.any() for J2K post processing

#KT-17870 fixed

idea/idea-core/src/org/jetbrains/kotlin/idea/core/util/CoroutineUtils.kt

@@ -17,7 +17,9 @@
 package org.jetbrains.kotlin.idea.core.util
 
 import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.application.ModalityState
 import kotlinx.coroutines.experimental.CoroutineDispatcher
+import kotlin.coroutines.experimental.AbstractCoroutineContextElement
 import kotlin.coroutines.experimental.CoroutineContext
 
 
@@ -27,6 +29,11 @@ public object EDT : CoroutineDispatcher() {
     }
 
     override fun dispatch(context: CoroutineContext, block: Runnable) {
-        ApplicationManager.getApplication().invokeLater(block)
+        val modalityState = context[ModalityStateElement.Key]?.modalityState ?: ModalityState.defaultModalityState()
+        ApplicationManager.getApplication().invokeLater(block, modalityState)
+    }
+
+    class ModalityStateElement(val modalityState: ModalityState) : AbstractCoroutineContextElement(Key) {
+        companion object Key : CoroutineContext.Key<ModalityStateElement>
     }
 }

idea/src/org/jetbrains/kotlin/idea/j2k/J2kPostProcessor.kt

@@ -17,6 +17,7 @@
 package org.jetbrains.kotlin.idea.j2k
 
 import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.application.ModalityState
 import com.intellij.openapi.editor.RangeMarker
 import com.intellij.openapi.util.TextRange
 import com.intellij.psi.PsiElement
@@ -55,7 +56,8 @@ class J2kPostProcessor(private val formatCode: Boolean) : PostProcessor {
         PROCESS
     }
 
-    override fun doAdditionalProcessing(file: KtFile, rangeMarker: RangeMarker?) = runBlocking {
+    override fun doAdditionalProcessing(file: KtFile, rangeMarker: RangeMarker?) =
+            runBlocking(EDT.ModalityStateElement(ModalityState.any())) {
                 do {
                     var modificationStamp: Long? = file.modificationStamp
                     val elementToActions = runReadAction {