From fe6b788f6bdef567e74a208fa69f45d3ebf01300 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Sat, 28 Mar 2020 13:50:11 -0600
Subject: [PATCH] MonkeyedTextInputEditText: introduce a new horror

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
 .../widget/MonkeyedTextInputEditText.kt       | 30 +++++++++++++++++++
 .../res/layout/tunnel_editor_fragment.xml     | 19 +++++++-----
 ui/src/main/res/layout/tunnel_editor_peer.xml | 10 ++++---
 ui/src/main/res/values/styles.xml             |  2 +-
 4 files changed, 48 insertions(+), 13 deletions(-)
 create mode 100644 ui/src/main/java/com/wireguard/android/widget/MonkeyedTextInputEditText.kt

diff --git a/ui/src/main/java/com/wireguard/android/widget/MonkeyedTextInputEditText.kt b/ui/src/main/java/com/wireguard/android/widget/MonkeyedTextInputEditText.kt
new file mode 100644
index 00000000..8316d65e
--- /dev/null
+++ b/ui/src/main/java/com/wireguard/android/widget/MonkeyedTextInputEditText.kt
@@ -0,0 +1,30 @@
+/*
+ * Copyright © 2020 WireGuard LLC. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package com.wireguard.android.widget
+
+import android.content.Context
+import android.text.Editable
+import android.text.SpannableStringBuilder
+import android.util.AttributeSet
+import com.google.android.material.R
+import com.google.android.material.textfield.TextInputEditText
+import com.google.android.material.textfield.TextInputLayout
+
+class MonkeyedTextInputEditText @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = R.attr.editTextStyle) : TextInputEditText(context, attrs, defStyleAttr) {
+    @Override
+    override fun getText(): Editable? {
+        val text = super.getText()
+        if (!text.isNullOrEmpty())
+            return text
+        /* We want this expression in TextInputLayout.java to be true:
+         *        final boolean hasText = editText != null && !TextUtils.isEmpty(editText.getText());
+         * But for everyone else it should return the real value, so we check the caller.
+         */
+        if (Thread.currentThread().stackTrace[3].className == TextInputLayout::class.qualifiedName)
+            return SpannableStringBuilder(" ")
+        return text
+    }
+}
diff --git a/ui/src/main/res/layout/tunnel_editor_fragment.xml b/ui/src/main/res/layout/tunnel_editor_fragment.xml
index bef3fb25..27d898ef 100644
--- a/ui/src/main/res/layout/tunnel_editor_fragment.xml
+++ b/ui/src/main/res/layout/tunnel_editor_fragment.xml
@@ -126,6 +126,7 @@
                         <com.google.android.material.textfield.TextInputLayout
                             android:id="@+id/public_key_label_layout"
                             style="@style/TextInputLayoutBase"
+                            android:hint="@string/public_key"
                             android:layout_width="0dp"
                             android:layout_height="wrap_content"
                             android:layout_margin="4dp"
@@ -133,14 +134,14 @@
                             app:layout_constraintStart_toStartOf="parent"
                             app:layout_constraintTop_toBottomOf="@+id/private_key_text_layout">
 
-                            <com.google.android.material.textfield.TextInputEditText
+                            <com.wireguard.android.widget.MonkeyedTextInputEditText
                                 android:id="@+id/public_key_text"
                                 android:layout_width="match_parent"
                                 android:layout_height="wrap_content"
+                                android:hint="@string/hint_generated"
                                 android:editable="false"
                                 android:ellipsize="end"
                                 android:focusable="false"
-                                android:hint="@string/public_key"
                                 android:onClick="@{ClipboardUtils::copyTextView}"
                                 android:singleLine="true"
                                 android:text="@{config.interface.publicKey}" />
@@ -170,6 +171,7 @@
                         <com.google.android.material.textfield.TextInputLayout
                             android:id="@+id/listen_port_label_layout"
                             style="@style/TextInputLayoutBase"
+                            android:hint="@string/listen_port"
                             android:layout_width="0dp"
                             android:layout_height="wrap_content"
                             android:layout_margin="4dp"
@@ -178,10 +180,10 @@
                             app:layout_constraintEnd_toEndOf="parent"
                             app:layout_constraintStart_toEndOf="@id/addresses_label_layout">
 
-                            <com.google.android.material.textfield.TextInputEditText
+                            <com.wireguard.android.widget.MonkeyedTextInputEditText
                                 android:layout_width="match_parent"
                                 android:layout_height="wrap_content"
-                                android:hint="@string/listen_port"
+                                android:hint="@string/hint_random"
                                 android:inputType="number"
                                 android:text="@={config.interface.listenPort}"
                                 android:textAlignment="center" />
@@ -195,7 +197,7 @@
                             android:layout_height="wrap_content"
                             android:layout_margin="4dp"
                             app:layout_constraintHorizontal_chainStyle="spread"
-                            app:layout_constraintHorizontal_weight="0.8"
+                            app:layout_constraintHorizontal_weight="0.7"
                             app:layout_constraintEnd_toStartOf="@id/mtu_label_layout"
                             app:layout_constraintStart_toStartOf="parent"
                             app:layout_constraintTop_toBottomOf="@+id/addresses_label_layout">
@@ -215,17 +217,18 @@
                             android:layout_width="0dp"
                             android:layout_height="wrap_content"
                             android:layout_marginStart="4dp"
-                            app:layout_constraintHorizontal_weight="0.2"
+                            android:hint="@string/mtu"
+                            app:layout_constraintHorizontal_weight="0.3"
                             app:layout_constraintStart_toEndOf="@id/dns_servers_label_layout"
                             app:layout_constraintEnd_toEndOf="parent"
                             app:layout_constraintTop_toTopOf="@id/dns_servers_label_layout">
 
-                            <com.google.android.material.textfield.TextInputEditText
+                            <com.wireguard.android.widget.MonkeyedTextInputEditText
                                 android:id="@+id/mtu_text"
                                 android:layout_width="match_parent"
                                 android:layout_height="wrap_content"
-                                android:hint="@string/mtu"
                                 android:inputType="number"
+                                android:hint="@string/hint_automatic"
                                 android:text="@={config.interface.mtu}"
                                 android:textAlignment="center" />
                         </com.google.android.material.textfield.TextInputLayout>
diff --git a/ui/src/main/res/layout/tunnel_editor_peer.xml b/ui/src/main/res/layout/tunnel_editor_peer.xml
index e37aa564..896d2381 100644
--- a/ui/src/main/res/layout/tunnel_editor_peer.xml
+++ b/ui/src/main/res/layout/tunnel_editor_peer.xml
@@ -83,15 +83,16 @@
                 android:layout_width="0dp"
                 android:layout_height="wrap_content"
                 android:layout_margin="4dp"
+                android:hint="@string/pre_shared_key"
                 app:layout_constraintTop_toBottomOf="@+id/public_key_label_layout"
                 app:layout_constraintEnd_toEndOf="parent"
                 app:layout_constraintStart_toStartOf="parent">
 
-                <com.google.android.material.textfield.TextInputEditText
+                <com.wireguard.android.widget.MonkeyedTextInputEditText
                     android:id="@+id/pre_shared_key_text"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                    android:hint="@string/pre_shared_key"
+                    android:hint="@string/hint_optional"
                     android:inputType="textNoSuggestions|textVisiblePassword"
                     android:text="@={item.preSharedKey}"/>
             </com.google.android.material.textfield.TextInputLayout>
@@ -102,15 +103,16 @@
                 android:layout_width="0dp"
                 android:layout_height="wrap_content"
                 android:layout_margin="4dp"
+                android:hint="@string/persistent_keepalive"
                 app:layout_constraintStart_toStartOf="parent"
                 app:layout_constraintTop_toBottomOf="@id/pre_shared_key_label_layout"
                 app:layout_constraintEnd_toEndOf="parent">
 
-                <com.google.android.material.textfield.TextInputEditText
+                <com.wireguard.android.widget.MonkeyedTextInputEditText
                     android:id="@+id/persistent_keepalive_text"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                    android:hint="@string/persistent_keepalive"
+                    android:hint="@string/hint_optional"
                     android:inputType="number"
                     android:text="@={item.persistentKeepalive}" />
             </com.google.android.material.textfield.TextInputLayout>
diff --git a/ui/src/main/res/values/styles.xml b/ui/src/main/res/values/styles.xml
index fc2f9f0e..c906068a 100644
--- a/ui/src/main/res/values/styles.xml
+++ b/ui/src/main/res/values/styles.xml
@@ -55,7 +55,7 @@
 
     <style name="DetailText" parent="TextAppearance.MaterialComponents.Body1" />
 
-    <style name="TextInputLayoutBase" parent="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox.Dense">
+    <style name="TextInputLayoutBase" parent="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox">
         <item name="boxStrokeColor">?attr/colorSecondary</item>
         <item name="hintTextColor">?attr/colorOnPrimary</item>
     </style>