Added support for placeholders in snippets

FAQ.md

@@ -4633,8 +4633,6 @@ Templates can have the following options:
 * *Snippet*: template will be used as text fragment (since version 1.1857)
 * *Hide from menus*: template will be hidden (disabled)
 
-Note that placeholders will not be filled in when using snippets.
-
 <br />
 
 <h2><a name="get-support"></a>Get support</h2>

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

@@ -45,6 +45,7 @@ import android.view.MenuItem;
 import android.view.View;
 import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputConnection;
+import android.widget.EditText;
 import android.widget.Toast;
 
 import androidx.core.view.inputmethod.EditorInfoCompat;
@@ -58,6 +59,9 @@ import org.jsoup.nodes.Document;
 import java.util.List;
 import java.util.concurrent.ExecutorService;
 
+import javax.mail.internet.AddressException;
+import javax.mail.internet.InternetAddress;
+
 public class EditTextCompose extends FixedEditText {
     private boolean raw = false;
     private ISelection selectionListener = null;
@@ -215,9 +219,18 @@ public class EditTextCompose extends FixedEditText {
                     if (snippets == null)
                         return false;
 
+                    InternetAddress[] to = null;
+                    try {
+                        View root = getRootView();
+                        EditText etTo = (root == null ? null : root.findViewById(R.id.etTo));
+                        if (etTo != null)
+                            to = MessageHelper.parseAddresses(getContext(), etTo.getText().toString());
+                    } catch (AddressException ignored) {
+                    }
+
                     for (EntityAnswer snippet : snippets)
                         if (snippet.id.equals(id)) {
-                            String html = snippet.getHtml(null);
+                            String html = snippet.getHtml(to);
 
                             executor.submit(new Runnable() {
                                 @Override