Add emoji search to CFv2.

app/src/main/java/org/thoughtcrime/securesms/components/InputAwareConstraintLayout.kt

@@ -26,6 +26,9 @@ class InputAwareConstraintLayout @JvmOverloads constructor(
   private var inputId: Int? = null
   private var input: Fragment? = null
 
+  val isInputShowing: Boolean
+    get() = input != null
+
   lateinit var fragmentManager: FragmentManager
   var listener: Listener? = null
 

app/src/main/java/org/thoughtcrime/securesms/components/InsetAwareConstraintLayout.kt

@@ -55,9 +55,11 @@ open class InsetAwareConstraintLayout @JvmOverloads constructor(
   private val parentEndGuideline: Guideline? by lazy { findViewById(R.id.parent_end_guideline) }
   private val keyboardGuideline: Guideline? by lazy { findViewById(R.id.keyboard_guideline) }
 
+  private val listeners: MutableList<KeyboardStateListener> = mutableListOf()
   private val keyboardAnimator = KeyboardInsetAnimator()
   private val displayMetrics = DisplayMetrics()
   private var overridingKeyboard: Boolean = false
+  private var previousKeyboardHeight: Int = 0
 
   init {
     ViewCompat.setOnApplyWindowInsetsListener(this) { _, windowInsetsCompat ->
@@ -74,6 +76,14 @@ open class InsetAwareConstraintLayout @JvmOverloads constructor(
     }
   }
 
+  fun addKeyboardStateListener(listener: KeyboardStateListener) {
+    listeners += listener
+  }
+
+  fun removeKeyboardStateListener(listener: KeyboardStateListener) {
+    listeners.remove(listener)
+  }
+
   private fun applyInsets(windowInsets: Insets, keyboardInsets: Insets) {
     val isLtr = ViewUtil.isLtr(this)
 
@@ -96,6 +106,18 @@ open class InsetAwareConstraintLayout @JvmOverloads constructor(
         keyboardAnimator.endingGuidelineEnd = windowInsets.bottom
       }
     }
+
+    if (previousKeyboardHeight != keyboardInsets.bottom) {
+      listeners.forEach {
+        if (previousKeyboardHeight <= 0) {
+          it.onKeyboardShown()
+        } else {
+          it.onKeyboardHidden()
+        }
+      }
+    }
+
+    previousKeyboardHeight = keyboardInsets.bottom
   }
 
   protected fun overrideKeyboardGuidelineWithPreviousHeight() {
@@ -157,6 +179,11 @@ open class InsetAwareConstraintLayout @JvmOverloads constructor(
   private val Guideline?.guidelineEnd: Int
     get() = if (this == null) 0 else (layoutParams as LayoutParams).guideEnd
 
+  interface KeyboardStateListener {
+    fun onKeyboardShown()
+    fun onKeyboardHidden()
+  }
+
   /**
    * Adjusts the [keyboardGuideline] to move with the IME keyboard opening or closing.
    */