Merge pull request #4547 from Isira-Seneviratne/Use_Core_KTX_functions

Use Core KTX functions.

app/src/main/java/org/schabi/newpipe/local/feed/FeedFragment.kt

@@ -29,6 +29,8 @@ import android.view.MenuItem
 import android.view.View
 import android.view.ViewGroup
 import androidx.appcompat.app.AlertDialog
+import androidx.core.os.bundleOf
+import androidx.core.view.isVisible
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProvider
 import androidx.preference.PreferenceManager
@@ -253,11 +255,9 @@ class FeedFragment : BaseListFragment<FeedState, Unit>() {
 
         oldestSubscriptionUpdate = loadedState.oldestUpdate
 
+        refresh_subtitle_text.isVisible = loadedState.notLoadedCount > 0
         if (loadedState.notLoadedCount > 0) {
-            refresh_subtitle_text.visibility = View.VISIBLE
             refresh_subtitle_text.text = getString(R.string.feed_subscription_not_loaded_count, loadedState.notLoadedCount)
-        } else {
-            refresh_subtitle_text.visibility = View.GONE
         }
 
         if (loadedState.itemsErrors.isNotEmpty()) {
@@ -330,12 +330,7 @@ class FeedFragment : BaseListFragment<FeedState, Unit>() {
         @JvmStatic
         fun newInstance(groupId: Long = FeedGroupEntity.GROUP_ALL_ID, groupName: String? = null): FeedFragment {
             val feedFragment = FeedFragment()
-
+            feedFragment.arguments = bundleOf(KEY_GROUP_ID to groupId, KEY_GROUP_NAME to groupName)
-            feedFragment.arguments = Bundle().apply {
-                putLong(KEY_GROUP_ID, groupId)
-                putString(KEY_GROUP_NAME, groupName)
-            }
-
             return feedFragment
         }
     }

app/src/main/java/org/schabi/newpipe/local/subscription/dialog/FeedGroupDialog.kt

@@ -3,15 +3,17 @@ package org.schabi.newpipe.local.subscription.dialog
 import android.app.Dialog
 import android.os.Bundle
 import android.os.Parcelable
-import android.text.Editable
 import android.text.TextUtils
-import android.text.TextWatcher
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.view.inputmethod.InputMethodManager
 import android.widget.Toast
 import androidx.core.content.getSystemService
+import androidx.core.os.bundleOf
+import androidx.core.view.isGone
+import androidx.core.view.isVisible
+import androidx.core.widget.doOnTextChanged
 import androidx.fragment.app.DialogFragment
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProvider
@@ -191,16 +193,11 @@ class FeedGroupDialog : DialogFragment(), BackPressable {
         }
 
         group_name_input_container.error = null
-        group_name_input.addTextChangedListener(object : TextWatcher {
+        group_name_input.doOnTextChanged { text, _, _, _ ->
-            override fun afterTextChanged(s: Editable?) {}
+            if (group_name_input_container.isErrorEnabled && !text.isNullOrBlank()) {
-            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {}
+                group_name_input_container.error = null
-
-            override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
-                if (group_name_input_container.isErrorEnabled && !s.isNullOrBlank()) {
-                    group_name_input_container.error = null
-                }
             }
-        })
+        }
 
         confirm_button.setOnClickListener { handlePositiveButton() }
 
@@ -242,15 +239,11 @@ class FeedGroupDialog : DialogFragment(), BackPressable {
             }
         }
 
-        toolbar_search_edit_text.addTextChangedListener(object : TextWatcher {
+        toolbar_search_edit_text.doOnTextChanged { _, _, _, _ ->
-            override fun beforeTextChanged(s: CharSequence, start: Int, count: Int, after: Int) = Unit
+            val newQuery: String = toolbar_search_edit_text.text.toString()
-            override fun afterTextChanged(s: Editable) = Unit
+            subscriptionsCurrentSearchQuery = newQuery
-            override fun onTextChanged(s: CharSequence, start: Int, before: Int, count: Int) {
+            viewModel.filterSubscriptionsBy(newQuery)
-                val newQuery: String = toolbar_search_edit_text.text.toString()
+        }
-                subscriptionsCurrentSearchQuery = newQuery
-                viewModel.filterSubscriptionsBy(newQuery)
-            }
-        })
 
         subscriptionGroupAdapter.setOnItemClickListener(subscriptionPickerItemListener)
     }
@@ -414,21 +407,14 @@ class FeedGroupDialog : DialogFragment(), BackPressable {
             else -> android.R.string.ok
         })
 
-        delete_button.visibility = when {
+        delete_button.isGone = currentScreen != InitialScreen || groupId == NO_GROUP_SELECTED
-            currentScreen != InitialScreen -> View.GONE
-            groupId == NO_GROUP_SELECTED -> View.GONE
-            else -> View.VISIBLE
-        }
 
         hideKeyboard()
         hideSearch()
     }
 
     private fun View.onlyVisibleIn(vararg screens: ScreenState) {
-        visibility = when (currentScreen) {
+        isVisible = currentScreen in screens
-            in screens -> View.VISIBLE
-            else -> View.GONE
-        }
     }
 
     /*/​//////////////////////////////////////////////////////////////////////////
@@ -501,11 +487,7 @@ class FeedGroupDialog : DialogFragment(), BackPressable {
 
         fun newInstance(groupId: Long = NO_GROUP_SELECTED): FeedGroupDialog {
             val dialog = FeedGroupDialog()
-
+            dialog.arguments = bundleOf(KEY_GROUP_ID to groupId)
-            dialog.arguments = Bundle().apply {
-                putLong(KEY_GROUP_ID, groupId)
-            }
-
             return dialog
         }
     }

app/src/main/java/org/schabi/newpipe/local/subscription/item/HeaderWithMenuItem.kt

@@ -1,9 +1,8 @@
 package org.schabi.newpipe.local.subscription.item
 
-import android.view.View.GONE
 import android.view.View.OnClickListener
-import android.view.View.VISIBLE
 import androidx.annotation.DrawableRes
+import androidx.core.view.isVisible
 import com.xwray.groupie.kotlinandroidextensions.GroupieViewHolder
 import com.xwray.groupie.kotlinandroidextensions.Item
 import kotlinx.android.synthetic.main.header_with_menu_item.header_menu_item
@@ -47,6 +46,6 @@ class HeaderWithMenuItem(
     }
 
     private fun updateMenuItemVisibility(viewHolder: GroupieViewHolder) {
-        viewHolder.header_menu_item.visibility = if (showMenuItem) VISIBLE else GONE
+        viewHolder.header_menu_item.isVisible = showMenuItem
     }
 }

app/src/main/java/org/schabi/newpipe/local/subscription/item/PickerSubscriptionItem.kt

@@ -1,6 +1,7 @@
 package org.schabi.newpipe.local.subscription.item
 
 import android.view.View
+import androidx.core.view.isVisible
 import com.nostra13.universalimageloader.core.ImageLoader
 import com.xwray.groupie.kotlinandroidextensions.GroupieViewHolder
 import com.xwray.groupie.kotlinandroidextensions.Item
@@ -25,7 +26,7 @@ data class PickerSubscriptionItem(
                 viewHolder.thumbnail_view, ImageDisplayConstants.DISPLAY_AVATAR_OPTIONS)
 
         viewHolder.title_view.text = subscriptionEntity.name
-        viewHolder.selected_highlight.visibility = if (isSelected) View.VISIBLE else View.GONE
+        viewHolder.selected_highlight.isVisible = isSelected
     }
 
     override fun unbind(viewHolder: GroupieViewHolder) {