New UI for theme autodetection. Additional fixes.

GitOrigin-RevId: 2ceb4c28ebcfe62e23618a995ef41a1996c87795

platform/platform-impl/src/com/intellij/ide/ui/AppearanceConfigurable.kt

@@ -5,6 +5,7 @@ import com.intellij.application.options.editor.CheckboxDescriptor
 import com.intellij.application.options.editor.checkBox
 import com.intellij.ide.GeneralSettings
 import com.intellij.ide.IdeBundle.message
+import com.intellij.ide.actions.QuickChangeLookAndFeel
 import com.intellij.ide.ui.search.OptionDescription
 import com.intellij.openapi.actionSystem.ActionManager
 import com.intellij.openapi.actionSystem.ActionPlaces
@@ -93,13 +94,17 @@ internal class AppearanceConfigurable : BoundSearchableConfigurable(message("tit
       blockRow {
         fullRow {
           label(message("combobox.look.and.feel"))
-          comboBox(lafManager.lafComboBoxModel, { lafManager.lookAndFeelReference }, {},
+          val theme = comboBox(lafManager.lafComboBoxModel,
+                   { lafManager.lookAndFeelReference },
+                   { QuickChangeLookAndFeel.switchLafAndUpdateUI(lafManager, lafManager.findLaf(it), true) },
                    lafManager.lookAndFeelCellRenderer).shouldUpdateLaF()
 
           val syncCheckBox = checkBox(message("preferred.theme.autodetect.selector"),
-                                      { lafManager.autodetect }, { lafManager.autodetect = it }).withLargeLeftGap().shouldUpdateLaF()
+                                      { lafManager.autodetect },
+                                      { lafManager.autodetect = it }).withLargeLeftGap().shouldUpdateLaF()
 
           syncCheckBox.visible(lafManager.autodetectSupported)
+          theme.enableIf(syncCheckBox.selected.not())
 
           component(lafManager.settingsToolbar)
             .visibleIf(syncCheckBox.selected)

platform/platform-impl/src/com/intellij/ui/layout/ComponentPredicate.kt

@@ -41,6 +41,10 @@ infix fun ComponentPredicate.or(other: ComponentPredicate): ComponentPredicate {
   return OrPredicate(this, other)
 }
 
+fun ComponentPredicate.not() : ComponentPredicate {
+  return NotPredicate(this)
+}
+
 private class AndPredicate(private val lhs: ComponentPredicate, private val rhs: ComponentPredicate) : ComponentPredicate() {
   override fun invoke(): Boolean = lhs.invoke() && rhs.invoke()
 
@@ -60,3 +64,12 @@ private class OrPredicate(private val lhs: ComponentPredicate, private val rhs:
     rhs.addListener(andListener)
   }
 }
+
+private class NotPredicate(private val that: ComponentPredicate) : ComponentPredicate() {
+  override fun invoke(): Boolean = !that.invoke()
+
+  override fun addListener(listener: (Boolean) -> Unit) {
+    val notListener: (Boolean) -> Unit = { listener(!that.invoke()) }
+    that.addListener(notListener)
+  }
+}