Highlight DSN headers, refactoring

app/src/main/AndroidManifest.xml

@@ -154,7 +154,7 @@
         </activity>
 
         <activity
-            android:name=".ActivityEml"
+            android:name=".ActivityEML"
             android:exported="true"
             android:icon="@mipmap/ic_launcher"
             android:launchMode="singleTop">

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

@@ -25,6 +25,7 @@ import android.content.Context;
 import android.content.res.AssetFileDescriptor;
 import android.net.Uri;
 import android.os.Bundle;
+import android.text.Spanned;
 import android.view.View;
 import android.widget.TextView;
 
@@ -88,7 +89,9 @@ public class ActivityDSN extends ActivityBase {
                     int length;
                     while ((length = is.read(buffer)) != -1)
                         bos.write(buffer, 0, length);
-                    result.headers = MessageHelper.decodeMime(bos.toString(StandardCharsets.UTF_8.name()));
+
+                    String headers = MessageHelper.decodeMime(bos.toString(StandardCharsets.UTF_8.name()));
+                    result.headers = HtmlHelper.highlightHeaders(context, headers);
                 }
 
                 return result;
@@ -111,6 +114,6 @@ public class ActivityDSN extends ActivityBase {
     }
 
     private class Result {
-        String headers;
+        Spanned headers;
     }
 }

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

@@ -26,9 +26,7 @@ import android.content.DialogInterface;
 import android.content.res.AssetFileDescriptor;
 import android.net.Uri;
 import android.os.Bundle;
-import android.text.SpannableStringBuilder;
 import android.text.Spanned;
-import android.text.style.ForegroundColorSpan;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
@@ -54,7 +52,7 @@ import javax.mail.Message;
 import javax.mail.Session;
 import javax.mail.internet.MimeMessage;
 
-public class ActivityEml extends ActivityBase {
+public class ActivityEML extends ActivityBase {
     private Uri uri;
 
     @Override
@@ -125,21 +123,7 @@ public class ActivityEml extends ActivityBase {
                     result.cc = MessageHelper.formatAddresses(helper.getCc());
                     result.bcc = MessageHelper.formatAddresses(helper.getBcc());
                     result.subject = helper.getSubject();
-
-                    String headers = helper.getHeaders();
-                    int colorAccent = Helper.resolveColor(context, R.attr.colorAccent);
-                    SpannableStringBuilder ssb = new SpannableStringBuilder(headers);
-                    int index = 0;
-                    for (String line : headers.split("\n")) {
-                        if (line.length() > 0 && !Character.isWhitespace(line.charAt(0))) {
-                            int colon = line.indexOf(':');
-                            if (colon > 0)
-                                ssb.setSpan(new ForegroundColorSpan(colorAccent), index, index + colon, 0);
-                        }
-                        index += line.length() + 1;
-                    }
-
-                    result.headers = ssb;
+                    result.headers = HtmlHelper.highlightHeaders(context, helper.getHeaders());
 
                     MessageHelper.MessageParts parts = helper.getMessageParts();
 
@@ -220,10 +204,10 @@ public class ActivityEml extends ActivityBase {
             @Override
             protected void onExecuted(Bundle args, List<EntityAccount> accounts) {
                 ArrayAdapter<EntityAccount> adapter =
-                        new ArrayAdapter<>(ActivityEml.this, R.layout.spinner_item1, android.R.id.text1);
+                        new ArrayAdapter<>(ActivityEML.this, R.layout.spinner_item1, android.R.id.text1);
                 adapter.addAll(accounts);
 
-                new AlertDialog.Builder(ActivityEml.this)
+                new AlertDialog.Builder(ActivityEML.this)
                         .setAdapter(adapter, new DialogInterface.OnClickListener() {
                             @Override
                             public void onClick(DialogInterface dialog, int which) {
@@ -236,7 +220,7 @@ public class ActivityEml extends ActivityBase {
                                 new SimpleTask<String>() {
                                     @Override
                                     protected void onPreExecute(Bundle args) {
-                                        ToastEx.makeText(ActivityEml.this, R.string.title_executing, Toast.LENGTH_LONG).show();
+                                        ToastEx.makeText(ActivityEML.this, R.string.title_executing, Toast.LENGTH_LONG).show();
                                     }
 
                                     @Override
@@ -280,7 +264,7 @@ public class ActivityEml extends ActivityBase {
 
                                     @Override
                                     protected void onExecuted(Bundle args, String name) {
-                                        ToastEx.makeText(ActivityEml.this, name, Toast.LENGTH_LONG).show();
+                                        ToastEx.makeText(ActivityEML.this, name, Toast.LENGTH_LONG).show();
                                     }
 
                                     @Override
@@ -290,7 +274,7 @@ public class ActivityEml extends ActivityBase {
                                         else
                                             Helper.unexpectedError(getSupportFragmentManager(), ex);
                                     }
-                                }.execute(ActivityEml.this, args, "eml:store");
+                                }.execute(ActivityEML.this, args, "eml:store");
                             }
                         })
                         .show();

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

@@ -57,7 +57,6 @@ import android.text.format.DateUtils;
 import android.text.method.ArrowKeyMovementMethod;
 import android.text.method.LinkMovementMethod;
 import android.text.style.DynamicDrawableSpan;
-import android.text.style.ForegroundColorSpan;
 import android.text.style.ImageSpan;
 import android.text.style.QuoteSpan;
 import android.text.style.URLSpan;
@@ -1024,20 +1023,9 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             tvKeywords.setText(TextUtils.join(" ", message.keywords));
 
             // Headers
-            if (show_headers && message.headers != null) {
-                SpannableStringBuilder ssb = new SpannableStringBuilder(message.headers);
-                int index = 0;
-                for (String line : message.headers.split("\n")) {
-                    if (line.length() > 0 && !Character.isWhitespace(line.charAt(0))) {
-                        int colon = line.indexOf(':');
-                        if (colon > 0)
-                            ssb.setSpan(new ForegroundColorSpan(colorAccent), index, index + colon, 0);
-                    }
-                    index += line.length() + 1;
-                }
-
-                tvHeaders.setText(ssb);
-            } else
+            if (show_headers && message.headers != null)
+                tvHeaders.setText(HtmlHelper.highlightHeaders(context, message.headers));
+            else
                 tvHeaders.setText(null);
 
             // Attachments

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

@@ -30,8 +30,10 @@ import android.graphics.drawable.Drawable;
 import android.graphics.drawable.LevelListDrawable;
 import android.os.Handler;
 import android.text.Html;
+import android.text.SpannableStringBuilder;
 import android.text.Spanned;
 import android.text.TextUtils;
+import android.text.style.ForegroundColorSpan;
 import android.util.Base64;
 import android.util.DisplayMetrics;
 import android.view.View;
@@ -732,6 +734,21 @@ public class HtmlHelper {
         }
     }
 
+    static Spanned highlightHeaders(Context context, String headers) {
+        int colorAccent = Helper.resolveColor(context, R.attr.colorAccent);
+        SpannableStringBuilder ssb = new SpannableStringBuilder(headers);
+        int index = 0;
+        for (String line : headers.split("\n")) {
+            if (line.length() > 0 && !Character.isWhitespace(line.charAt(0))) {
+                int colon = line.indexOf(':');
+                if (colon > 0)
+                    ssb.setSpan(new ForegroundColorSpan(colorAccent), index, index + colon, 0);
+            }
+            index += line.length() + 1;
+        }
+        return ssb;
+    }
+
     static Spanned fromHtml(@NonNull String html) {
         return fromHtml(html, null, null);
     }

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

@@ -3,7 +3,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".ActivityEml">
+    tools:context=".ActivityEML">
 
     <ScrollView
         android:layout_width="match_parent"