Highlight domain name in open link dialog

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

@@ -31,9 +31,12 @@ import android.graphics.Typeface;
 import android.net.Uri;
 import android.os.Bundle;
 import android.text.Editable;
+import android.text.SpannableStringBuilder;
+import android.text.Spanned;
 import android.text.TextUtils;
 import android.text.TextWatcher;
 import android.text.method.LinkMovementMethod;
+import android.text.style.ForegroundColorSpan;
 import android.util.Pair;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
@@ -155,7 +158,7 @@ public class FragmentDialogOpenLink extends FragmentDialogBase {
         ibDifferent.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                etLink.setText(uriTitle.toString());
+                etLink.setText(format(uriTitle, context));
             }
         });
 
@@ -238,7 +241,7 @@ public class FragmentDialogOpenLink extends FragmentDialogBase {
                     return;
 
                 Uri uri = Uri.parse(etLink.getText().toString());
-                etLink.setText(secure(uri, checked).toString());
+                etLink.setText(format(secure(uri, checked), context));
             }
         });
 
@@ -247,7 +250,7 @@ public class FragmentDialogOpenLink extends FragmentDialogBase {
         cbSanitize.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
-                etLink.setText(secure(checked ? sanitized : uri, cbSecure.isChecked()).toString());
+                etLink.setText(format(secure(checked ? sanitized : uri, cbSecure.isChecked()), context));
             }
         });
 
@@ -330,11 +333,11 @@ public class FragmentDialogOpenLink extends FragmentDialogBase {
         }
 
         if (host != null && !host.equals(puny)) {
-            etLink.setText(uri.buildUpon().encodedAuthority(puny).build().toString());
+            etLink.setText(format(uri.buildUpon().encodedAuthority(puny).build(), context));
             tvLink.setText(uri.toString());
             tvSuspicious.setVisibility(View.VISIBLE);
         } else {
-            etLink.setText(uri.toString());
+            etLink.setText(format(uri, context));
             tvLink.setText(null);
             tvSuspicious.setVisibility(Helper.isSingleScript(host) ? View.GONE : View.VISIBLE);
         }
@@ -479,4 +482,16 @@ public class FragmentDialogOpenLink extends FragmentDialogBase {
         } else
             return uri;
     }
+
+    private Spanned format(Uri uri, Context context) {
+        String text = uri.toString();
+        SpannableStringBuilder ssb = new SpannableStringBuilder(text);
+        String host = uri.getHost();
+        if (host != null) {
+            int textColorLink = Helper.resolveColor(context, android.R.attr.textColorLink);
+            int index = text.indexOf(host);
+            ssb.setSpan(new ForegroundColorSpan(textColorLink), index, index + host.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+        }
+        return ssb;
+    }
 }