[R-1567] move EmptyComponentPanel to R plugin

GitOrigin-RevId: e1a8e4937da9c000a7f50fcef97a993b0dce8b8b

notebooks/visualization/src/org/jetbrains/plugins/notebooks/visualization/r/inlays/components/EmptyComponentPanel.kt

@@ -1,48 +0,0 @@
-/*
- * Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
- */
-
-package org.jetbrains.plugins.notebooks.visualization.r.inlays.components
-
-import java.awt.GridBagConstraints
-import java.awt.GridBagLayout
-import javax.swing.JComponent
-import javax.swing.JPanel
-
-/**
- * This panel will show [emptyComponent] if current [contentComponent] is `null`.
- * That's pretty similar to `emptyView` decorator for Android's `ListView`
- */
-class EmptyComponentPanel(private val emptyComponent: JComponent) {
-  val component = JPanel(GridBagLayout())
-
-  var contentComponent: JComponent? = null
-    set(newComponent) {
-      if (field != null) {
-        component.remove(field)
-      }
-      if (newComponent != null) {
-        component.addWithFill(newComponent)
-        newComponent.isVisible = true
-      }
-      component.repaint()
-      emptyComponent.isVisible = newComponent == null
-      field = newComponent
-    }
-
-  init {
-    emptyComponent.isVisible = true
-    component.addWithFill(emptyComponent)
-  }
-
-  companion object {
-    private fun JPanel.addWithFill(component: JComponent) {
-      val constraints = GridBagConstraints().apply {
-        fill = GridBagConstraints.BOTH
-        weightx = 1.0
-        weighty = 1.0
-      }
-      add(component, constraints)
-    }
-  }
-}