Added DeepL FAQ

FAQ.md

@@ -3681,6 +3681,15 @@ Unfortunately, it is not possible to hide messages on the email server too.
 
 <br />
 
+<a name="faq167"></a>
+**(167) How can I use DeepL?**
+
+1. [Subscribe to](https://www.deepl.com/pro#developer) to one of the DeepL API plans (credit card required)
+1. [Copy](https://www.deepl.com/pro-account/plan) the authentication key
+1. In the message composer select some text and in the overflow menu select *Translate*, *Enter key* and paste the key
+
+<br />
+
 <h2><a name="get-support"></a>Get support</h2>
 
 FairEmail is supported on Android smartphones and tablets and ChromeOS only.

app/src/main/java/eu/faircode/email/FragmentCompose.java

@@ -6693,8 +6693,17 @@ public class FragmentCompose extends FragmentBase {
 
             View view = LayoutInflater.from(context).inflate(R.layout.dialog_deepl, null);
             final EditText etKey = view.findViewById(R.id.etKey);
+            final ImageButton ibInfo = view.findViewById(R.id.ibInfo);
+
             etKey.setText(prefs.getString("deepl", null));
 
+            ibInfo.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    Helper.viewFAQ(v.getContext(), 167);
+                }
+            });
+
             return new AlertDialog.Builder(context)
                     .setView(view)
                     .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {

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

@@ -7,14 +7,28 @@
 
     <eu.faircode.email.FixedTextView
         android:id="@+id/tvDeepL"
-        android:layout_width="wrap_content"
+        android:layout_width="0dp"
         android:layout_height="wrap_content"
         android:labelFor="@+id/etKey"
         android:text="DeepL"
         android:textAppearance="@style/TextAppearance.AppCompat.Large"
+        app:layout_constraintEnd_toStartOf="@id/ibInfo"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
+    <ImageButton
+        android:id="@+id/ibInfo"
+        android:layout_width="36dp"
+        android:layout_height="36dp"
+        android:background="?android:attr/selectableItemBackgroundBorderless"
+        android:contentDescription="@string/title_info"
+        android:padding="6dp"
+        android:scaleType="fitCenter"
+        android:tooltipText="@string/title_info"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="@id/tvDeepL"
+        app:srcCompat="@drawable/twotone_info_24" />
+
     <eu.faircode.email.EditTextPlain
         android:id="@+id/etKey"
         android:layout_width="0dp"

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

@@ -1108,7 +1108,7 @@
     <string name="title_insert_template">Insert template</string>
     <string name="title_create_template">Create template</string>
     <string name="title_translate" translatable="false">Translate</string>
-    <string name="title_translate_key" translatable="false">Enter auth key</string>
+    <string name="title_translate_key" translatable="false">Enter key</string>
     <string name="title_edit_plain_text">Edit as plain text</string>
     <string name="title_edit_formatted_text">Edit as reformatted text</string>
     <string name="title_select_certificate">Select public key</string>