ConfigEditFragment: Copy public key on click

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

app/src/main/res/layout/config_edit_fragment.xml

@@ -5,6 +5,8 @@
 
     <data>
 
+        <import type="com.wireguard.android.ConfigEditFragment" />
+
         <import type="com.wireguard.android.KeyInputFilter" />
 
         <import type="com.wireguard.android.NameInputFilter" />
@@ -107,6 +109,7 @@
                     android:focusable="false"
                     android:hint="@string/hint_generated"
                     android:maxLines="1"
+                    android:onClick="@{(view) -> ConfigEditFragment.copyPublicKey(view.getContext(), config.interface.publicKey)}"
                     android:text="@{config.interface.publicKey}" />
 
                 <TextView

app/src/main/res/values/strings.xml

@@ -34,6 +34,8 @@
     <string name="primary_config_summary">This configuration will be controlled by the quick settings tile</string>
     <string name="private_key">Private key</string>
     <string name="public_key">Public key</string>
+    <string name="public_key_copied_message">Public key copied to clipboard</string>
+    <string name="public_key_description">WireGuard public key</string>
     <string name="restore_on_boot">Restore on boot</string>
     <string name="restore_on_boot_summary">Restore previously enabled configurations on boot</string>
     <string name="save">Save</string>