Support hints for status bar widgets

src/main/java/com/maddyhome/idea/vim/extension/hints/HintGenerator.kt

@@ -8,6 +8,8 @@
 
 package com.maddyhome.idea.vim.extension.hints
 
+import com.intellij.openapi.editor.impl.EditorComponentImpl
+import com.intellij.openapi.wm.impl.status.TextPanel
 import com.intellij.ui.treeStructure.Tree
 import java.awt.Component
 import java.awt.Point
@@ -73,11 +75,16 @@ private fun collectTargets(
   val location = location + (accessible.location ?: return)
 
   accessible.size?.let { size ->
-    if (accessible.isShowing && (component.isClickable() || component is Tree)) {
+    if (accessible.isShowing && (component.isClickable() || component is Tree || component is TextPanel)) {
       targets[component].let {
         // For some reason, the same component may appear multiple times in the accessible tree.
         if (it == null || it.depth > depth) {
-          targets[component] = HintTarget(component, location, size, depth)
+          targets[component] = HintTarget(component, location, size, depth).apply {
+            action = when (component) {
+              is Tree, is EditorComponentImpl -> ({ component.requestFocusInWindow() })
+              else -> HintTarget::clickCenter
+            }
+          }
         }
       }
     }

src/main/java/com/maddyhome/idea/vim/extension/hints/HintTarget.kt

@@ -11,10 +11,29 @@ package com.maddyhome.idea.vim.extension.hints
 import java.awt.Dimension
 import java.awt.Point
 import java.awt.Rectangle
+import java.awt.Robot
+import java.awt.event.InputEvent
 import javax.accessibility.Accessible
 
 internal data class HintTarget(val component: Accessible, val location: Point, val size: Dimension, val depth: Int) {
   var hint: String = ""
 
   val bounds: Rectangle get() = Rectangle(location, size)
+
+  /**
+   * The action to execute when the hint is selected.
+   *
+   * @return `true` if the action succeeded, `false` otherwise
+   */
+  var action: Function1<HintTarget, Boolean> = { false }
+  fun action() = action(this)
+
+  fun clickCenter(): Boolean {
+    val robot = Robot()
+    val locationOnScreen = component.accessibleContext?.accessibleComponent?.locationOnScreen ?: return false
+    robot.mouseMove(locationOnScreen.x + bounds.width / 2, locationOnScreen.y + bounds.height / 2)
+    robot.mousePress(InputEvent.BUTTON1_DOWN_MASK)
+    robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK)
+    return true
+  }
 }

src/main/java/com/maddyhome/idea/vim/extension/hints/ToggleHintsAction.kt

@@ -78,9 +78,7 @@ class ToggleHintsAction : DumbAwareToggleAction() {
     ShortcutDispatcher("hints", targets.associateBy { it.hint.lowercase() }, { target ->
       popup.closeOk(null)
       alarm.cancelAllRequests()
-      target.component.accessibleContext?.apply {
-        if (accessibleAction?.doAccessibleAction(0) == null && !accessibleComponent.isFocusTraversable) return@apply
-        accessibleComponent.requestFocus()
+      if (target.action()) {
         highlight.setTarget(target)
         alarm.addRequest({ highlight.setTarget(null) }, highlightDuration)
       }