implement favorite view

base/src/main/java/com/hako/base/extensions/NavigationExtensions.kt

@@ -1,6 +1,32 @@
 package com.hako.base.extensions
 
 import android.os.Bundle
+import android.view.View
 import androidx.annotation.IdRes
+import androidx.appcompat.app.AppCompatActivity
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.FragmentManager
+import androidx.navigation.fragment.NavHostFragment
+
+fun AppCompatActivity.findNavHostFragment(@IdRes id: Int) =
+    supportFragmentManager.findFragmentById(id) as NavHostFragment
+
+fun NavHostFragment.registerOnFragmentViewCreated(
+    recursive: Boolean = true,
+    listener: (currentFragment: Fragment) -> Unit
+) {
+    childFragmentManager
+        .registerFragmentLifecycleCallbacks(object : FragmentManager.FragmentLifecycleCallbacks() {
+            override fun onFragmentViewCreated(
+                fm: FragmentManager,
+                f: Fragment,
+                v: View,
+                savedInstanceState: Bundle?
+            ) {
+                super.onFragmentViewCreated(fm, f, v, savedInstanceState)
+                listener(f)
+            }
+        }, recursive)
+}
 
 fun buildNavigation(@IdRes id: Int, bundle: Bundle = Bundle()) = Pair(id, bundle)

base/src/main/java/com/hako/base/navigation/ShowFabButton.kt

@@ -1,3 +1,7 @@
 package com.hako.base.navigation
 
-interface ShowFabButton
+interface ShowFabButton {
+    fun shouldShowFabButton(): Boolean
+
+    fun fabButtonPressed(): () -> Unit = {}
+}