[R-1567] rm unused NotebookTabs

GitOrigin-RevId: 5a42e140f912ad3a333732d1c33538f8817e9d54

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

@@ -1,72 +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 com.intellij.openapi.fileEditor.FileEditor
-import com.intellij.util.ui.components.BorderLayoutPanel
-import org.jetbrains.annotations.Nls
-import org.jetbrains.plugins.notebooks.visualization.r.VisualizationBundle
-import java.awt.BorderLayout
-import java.awt.Component
-import javax.swing.JPanel
-import javax.swing.JToggleButton
-
-/**
- * This component "installs" into bottom area of given FileEditor and allows us to add tabs with custom components under editor.
- */
-class NotebookTabs private constructor(private val editor: BorderLayoutPanel) : JPanel() {
-
-  companion object {
-
-    fun install(editor: FileEditor): NotebookTabs? {
-
-      val component = editor.component
-
-      if (component !is BorderLayoutPanel)
-        return null
-
-      val componentLayout = component.layout as? BorderLayout
-      if (componentLayout == null) {
-        return null
-      }
-
-      when (val bottomComponent = componentLayout.getLayoutComponent(BorderLayout.SOUTH)) {
-        null -> return NotebookTabs(component)
-        is NotebookTabs -> return bottomComponent
-        else -> return null
-      }
-    }
-  }
-
-  private val tabs = HashMap<JToggleButton, Component>()
-
-  init {
-    editor.addToBottom(this)
-    val center = (editor.layout as BorderLayout).getLayoutComponent(BorderLayout.CENTER)
-    addTab(VisualizationBundle.message("notebook.tabs.code.title"), center)
-  }
-
-  private fun addTab(@Nls name: String, page: Component) {
-    val tab = JToggleButton(name)
-
-    val action = {
-      val currentCenter = (editor.layout as BorderLayout).getLayoutComponent(BorderLayout.CENTER)
-      if (currentCenter != page) {
-        editor.remove(currentCenter)
-        editor.add(page, BorderLayout.CENTER)
-
-        editor.repaint()
-      }
-    }
-
-    tab.addActionListener { action.invoke() }
-
-    tabs[tab] = page
-
-    action.invoke()
-
-    add(tab)
-  }
-}