Show link type in link confirmation dialog

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

@@ -168,6 +168,7 @@ public class FragmentDialogOpenLink extends FragmentDialogBase {
         // Get views
         final View dview = LayoutInflater.from(context).inflate(R.layout.dialog_open_link, null);
         scroll = dview.findViewById(R.id.scroll);
+        final TextView tvCaption = dview.findViewById(R.id.tvCaption);
         final ImageButton ibInfo = dview.findViewById(R.id.ibInfo);
         final TextView tvTitle = dview.findViewById(R.id.tvTitle);
         final ImageButton ibDifferent = dview.findViewById(R.id.ibDifferent);
@@ -529,6 +530,13 @@ public class FragmentDialogOpenLink extends FragmentDialogBase {
 
         // Initialize
 
+        if (UriHelper.isHyperLink(uri))
+            tvCaption.setCompoundDrawablesWithIntrinsicBounds(R.drawable.twotone_insert_link_45_24, 0, 0, 0);
+        else if (UriHelper.isPhoneNumber(uri))
+            tvCaption.setCompoundDrawablesWithIntrinsicBounds(R.drawable.twotone_call_24, 0, 0, 0);
+        else if (UriHelper.isGeo(uri))
+            tvCaption.setCompoundDrawablesWithIntrinsicBounds(R.drawable.twotone_language_24, 0, 0, 0);
+
         tvTitle.setText(title);
         tvTitle.setVisibility(TextUtils.isEmpty(title) ? View.GONE : View.VISIBLE);
 

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

@@ -544,6 +544,14 @@ public class UriHelper {
                         "https".equalsIgnoreCase(uri.getScheme())));
     }
 
+    static boolean isPhoneNumber(Uri uri) {
+        return (uri.isOpaque() && "tel".equalsIgnoreCase(uri.getScheme()));
+    }
+
+    static boolean isGeo(Uri uri) {
+        return (uri.isOpaque() && "geo".equalsIgnoreCase(uri.getScheme()));
+    }
+
     static Uri fix(Uri uri) {
         if ((!"http".equals(uri.getScheme()) && "http".equalsIgnoreCase(uri.getScheme())) ||
                 (!"https".equals(uri.getScheme()) && "https".equalsIgnoreCase(uri.getScheme()))) {

app/src/main/res/drawable/twotone_call_24.xml

@@ -0,0 +1,15 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorControlNormal">
+  <path
+      android:fillColor="@android:color/white"
+      android:pathData="M19,17.47c-0.88,-0.07 -1.75,-0.22 -2.6,-0.45l-1.19,1.19c1.2,0.41 2.48,0.67 3.8,0.75v-1.49zM6.54,5h-1.5c0.09,1.32 0.35,2.59 0.75,3.8l1.2,-1.2c-0.24,-0.84 -0.39,-1.71 -0.45,-2.6z"
+      android:strokeAlpha="0.3"
+      android:fillAlpha="0.3"/>
+  <path
+      android:fillColor="@android:color/white"
+      android:pathData="M20,21c0.55,0 1,-0.45 1,-1v-3.49c0,-0.55 -0.45,-1 -1,-1 -1.24,0 -2.45,-0.2 -3.57,-0.57 -0.1,-0.04 -0.21,-0.05 -0.31,-0.05 -0.26,0 -0.51,0.1 -0.71,0.29l-2.2,2.2c-2.83,-1.45 -5.15,-3.76 -6.59,-6.59l2.2,-2.2c0.28,-0.28 0.36,-0.67 0.25,-1.02C8.7,6.45 8.5,5.25 8.5,4c0,-0.55 -0.45,-1 -1,-1L4,3c-0.55,0 -1,0.45 -1,1 0,9.39 7.61,17 17,17zM16.4,17.02c0.85,0.24 1.72,0.39 2.6,0.45v1.49c-1.32,-0.09 -2.59,-0.35 -3.8,-0.75l1.2,-1.19zM5.03,5h1.5c0.07,0.89 0.22,1.76 0.46,2.59l-1.2,1.2c-0.41,-1.2 -0.67,-2.47 -0.76,-3.79z"/>
+</vector>

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

@@ -15,6 +15,7 @@
             android:id="@+id/tvCaption"
             android:layout_width="0dp"
             android:layout_height="wrap_content"
+            android:drawablePadding="6dp"
             android:text="@string/title_open_link"
             android:textAppearance="@style/TextAppearance.AppCompat.Large"
             app:layout_constraintEnd_toStartOf="@+id/ibInfo"