Added Gmail label colors

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

@@ -1306,10 +1306,9 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
 
             tvFolder.setVisibility(compact && viewType != ViewType.THREAD ? View.GONE : View.VISIBLE);
 
-            tvLabels.setText(message.labels == null ? null : TextUtils.join(", ", message.labels));
-            tvLabels.setVisibility(
-                    labels_header && message.labels != null && message.labels.length > 0
-                            ? View.VISIBLE : View.GONE);
+            Spanned labels = getLabels(message);
+            tvLabels.setText(labels);
+            tvLabels.setVisibility(labels == null ? View.GONE : View.VISIBLE);
 
             boolean selected = properties.getValue("selected", message.id);
             if (viewType == ViewType.THREAD || (!threading && !selected)) {
@@ -5631,6 +5630,33 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             fragmentTransaction.commit();
         }
 
+        private Spanned getLabels(TupleMessageEx message) {
+            if (!labels_header)
+                return null;
+            if (message.labels == null || message.labels.length == 0)
+                return null;
+
+            SpannableStringBuilder ssb = new SpannableStringBuilderEx();
+            for (int i = 0; i < message.labels.length; i++) {
+                if (ssb.length() > 0)
+                    ssb.append(' ');
+
+                String label = message.labels[i];
+                ssb.append(label);
+
+                if (message.label_colors == null)
+                    continue;
+                if (i >= message.label_colors.length)
+                    continue;
+
+                int len = ssb.length();
+                ssb.setSpan(new ForegroundColorSpan(message.label_colors[i]),
+                        len - label.length(), len, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+            }
+
+            return ssb;
+        }
+
         private SpannableStringBuilder getKeywords(TupleMessageEx message) {
             SpannableStringBuilder ssb = new SpannableStringBuilderEx();
 
@@ -6552,6 +6578,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             if (message != null) {
                 keyPosition.put(message.id, i);
                 positionKey.put(i, message.id);
+                message.resolveLabelColors(context);
                 message.resolveKeywordColors(context);
             }
         }
@@ -6708,6 +6735,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
         keyPosition.put(message.id, position);
         positionKey.put(position, message.id);
 
+        message.resolveLabelColors(context);
         message.resolveKeywordColors(context);
 
         if (viewType == ViewType.THREAD && cards && threading && indentation) {

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

@@ -1978,7 +1978,7 @@ class Core {
         boolean drafts = false;
         Map<String, EntityFolder> local = new HashMap<>();
         List<EntityFolder> folders = db.folder().getFolders(account.id, false, false);
-        for (EntityFolder folder : folders)
+        for (EntityFolder folder : folders) {
             if (folder.tbc != null) {
                 try {
                     Log.i(folder.name + " creating");
@@ -2053,6 +2053,13 @@ class Core {
                         sync_folders = true;
                 }
             }
+
+            String key = "label.color." + folder.name;
+            if (folder.color == null)
+                prefs.edit().remove(key).apply();
+            else
+                prefs.edit().putInt(key, folder.color).apply();
+        }
         Log.i("Local folder count=" + local.size() + " drafts=" + drafts);
 
         if (!drafts) {

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

@@ -21,6 +21,7 @@ package eu.faircode.email;
 
 import android.content.Context;
 import android.content.Intent;
+import android.content.SharedPreferences;
 import android.database.sqlite.SQLiteConstraintException;
 import android.graphics.Color;
 import android.os.Bundle;
@@ -44,6 +45,7 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.constraintlayout.widget.Group;
 import androidx.lifecycle.Lifecycle;
+import androidx.preference.PreferenceManager;
 
 import com.google.android.material.snackbar.Snackbar;
 
@@ -658,8 +660,19 @@ public class FragmentFolder extends FragmentBase {
                     ask.setArguments(aargs);
                     ask.setTargetFragment(FragmentFolder.this, REQUEST_SAVE_CHANGES);
                     ask.show(getParentFragmentManager(), "folder:save");
-                } else if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
+                } else if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED)) {
+                    String name = args.getString("name");
+                    Integer color = args.getInt("color");
+
+                    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getContext());
+                    String key = "label.color." + name;
+                    if (color == Color.TRANSPARENT)
+                        prefs.edit().remove(key).apply();
+                    else
+                        prefs.edit().putInt(key, color).apply();
+
                     getParentFragmentManager().popBackStack();
+                }
             }
 
             @Override

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

@@ -68,6 +68,9 @@ public class TupleMessageEx extends EntityMessage {
     @Ignore
     boolean duplicate;
 
+    @Ignore
+    public Integer[] label_colors;
+
     @Ignore
     public Integer[] keyword_colors;
     @Ignore
@@ -79,6 +82,22 @@ public class TupleMessageEx extends EntityMessage {
                 : folderDisplay);
     }
 
+    void resolveLabelColors(Context context) {
+        List<Integer> color = new ArrayList<>();
+
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        if (this.labels != null)
+            for (int i = 0; i < this.labels.length; i++) {
+                String key = "label.color." + this.labels[i];
+                if (prefs.contains(key))
+                    color.add(prefs.getInt(key, Color.GRAY));
+                else
+                    color.add(null);
+            }
+
+        this.label_colors = color.toArray(new Integer[0]);
+    }
+
     void resolveKeywordColors(Context context) {
         List<Integer> color = new ArrayList<>();
         List<String> titles = new ArrayList<>();