Improve blocker flashing

src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/panels/EditablePanel.kt

@@ -403,12 +403,10 @@ open class EditablePanel<out S : Screen> @JvmOverloads constructor(
 
 	var isFlashing: Boolean
 		get() {
-			if (flashingSince == null) {
-				return false
-			}
+			val flashingSince = flashingSince ?: return false
 
-			if (flashingSince!!.millis >= 1200L) {
-				flashingSince = null
+			if (flashingSince.millis >= 1200L) {
+				this.flashingSince = null
 				return false
 			}
 
@@ -416,8 +414,14 @@ open class EditablePanel<out S : Screen> @JvmOverloads constructor(
 		}
 		set(value) {
 			if (value) {
-				flashingSince = SystemTime()
-				popup()
+				if (screen is MatteryScreen<*>) {
+					screen.popup(findAbsoluteRoot() as EditablePanel<MatteryScreen<*>>)
+				}
+
+				if (!flashAnyBlocker(true)) {
+					flashingSince = SystemTime()
+					findAbsoluteRoot().requestFocus()
+				}
 			} else {
 				flashingSince = null
 			}
@@ -466,23 +470,7 @@ open class EditablePanel<out S : Screen> @JvmOverloads constructor(
 	}
 
 	protected fun flashAnyBlocker(doFlash: Boolean = true): Boolean {
-		var blockingWindow = blockingWindow
-		var parent = parent
-
-		while (blockingWindow == null && parent != null) {
-			blockingWindow = parent.blockingWindow
-			parent = parent.parent
-		}
-
-		if (blockingWindow == null) {
-			return flashAnyBlockerInner(doFlash)
-		}
-
-		if (doFlash) {
-			blockingWindow.isFlashing = true
-		}
-
-		return true
+		return findAbsoluteRoot().flashAnyBlockerInner(doFlash)
 	}
 
 	@JvmOverloads
@@ -1732,17 +1720,17 @@ open class EditablePanel<out S : Screen> @JvmOverloads constructor(
 		isRemoved = true
 	}
 
-	fun popup(focus: Boolean = true) {
+	fun popup(focus: Boolean = true, doFlash: Boolean = true) {
 		if (isRemoved) {
 			return
 		}
 
-		if (screen is MatteryScreen<*> && parent == null) {
-			screen.popup(this as EditablePanel<MatteryScreen<*>>)
+		if (screen is MatteryScreen<*>) {
+			screen.popup(findAbsoluteRoot() as EditablePanel<MatteryScreen<*>>)
 		}
 
-		if (focus) {
-			requestFocus()
+		if (focus && !flashAnyBlocker(doFlash)) {
+			findAbsoluteRoot().requestFocus()
 		}
 	}