View indentations

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

@@ -2377,15 +2377,18 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
 
                         // Collapse quotes
                         if (!show_quotes) {
-                            List<Element> succesive = new ArrayList<>();
-                            for (Element quote : document.select("blockquote")) {
+                            List<Element> successive = new ArrayList<>();
+                            for (Element quote : document.select("blockquote"))
+                                if (HtmlHelper.hasBorder(quote)) {
                                     Element next = quote.nextElementSibling();
-                                if (next != null && "blockquote".equals(next.tagName()))
-                                    succesive.add(quote);
+                                    if (next != null &&
+                                            "blockquote".equals(next.tagName()) &&
+                                            HtmlHelper.hasBorder(next))
+                                        successive.add(quote);
                                     else
                                         quote.html("&#8230;");
                                 }
-                            for (Element quote : succesive)
+                            for (Element quote : successive)
                                 quote.remove();
                         }
 

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

@@ -807,6 +807,17 @@ public class HtmlHelper {
                                 sb.append(key).append(':').append(value).append(';');
                             }
                             break;
+
+                        case "border":
+                        case "border-left":
+                        case "border-right":
+                            if (value != null) {
+                                // 1px solid rgb(204,204,204)
+                                Float border = getFontSize(value.trim().split("\\s+")[0], 1.0f);
+                                if (border != null && border > 0)
+                                    element.attr("x-border", "true");
+                            }
+                            break;
                     }
                 }
 
@@ -1989,7 +2000,8 @@ public class HtmlHelper {
     private static String _getText(Document d) {
         truncate(d, MAX_FULL_TEXT_SIZE);
 
-        for (Element bq : d.select("blockquote")) {
+        for (Element bq : d.select("blockquote"))
+            if (hasBorder(bq)) {
                 bq.prependChild(new TextNode("["));
                 bq.appendChild(new TextNode("]"));
             }
@@ -1997,6 +2009,10 @@ public class HtmlHelper {
         return d.text();
     }
 
+    static boolean hasBorder(Element e) {
+        return "true".equals(e.attr("x-border"));
+    }
+
     static String truncate(String text, int at) {
         if (text.length() < at)
             return text;
@@ -2206,7 +2222,8 @@ public class HtmlHelper {
             int level = 1;
             Element parent = bq.parent();
             while (parent != null) {
-                if ("blockquote".equals(parent.tagName()))
+                if ("blockquote".equals(parent.tagName()) &&
+                        hasBorder(parent))
                     level++;
                 parent = parent.parent();
             }
@@ -2291,6 +2308,7 @@ public class HtmlHelper {
         int bulletGap = context.getResources().getDimensionPixelSize(R.dimen.bullet_gap_size);
         int bulletRadius = context.getResources().getDimensionPixelSize(R.dimen.bullet_radius_size);
         int bulletIndent = context.getResources().getDimensionPixelSize(R.dimen.bullet_indent_size);
+        int intentSize = context.getResources().getDimensionPixelSize(R.dimen.indent_size);
         int quoteGap = context.getResources().getDimensionPixelSize(R.dimen.quote_gap_size);
         int quoteStripe = context.getResources().getDimensionPixelSize(R.dimen.quote_stripe_width);
         int line_dash_length = context.getResources().getDimensionPixelSize(R.dimen.line_dash_length);
@@ -2573,10 +2591,13 @@ public class HtmlHelper {
                                 if (ssb.length() == 0 || ssb.charAt(ssb.length() - 1) != '\n')
                                     ssb.append("\n");
 
+                                if (hasBorder(element)) {
                                     if (Build.VERSION.SDK_INT < Build.VERSION_CODES.P)
                                         setSpan(ssb, new QuoteSpan(colorBlockquote), start, ssb.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
                                     else
                                         setSpan(ssb, new QuoteSpan(colorBlockquote, quoteStripe, quoteGap), start, ssb.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
+                                } else
+                                    setSpan(ssb, new IndentSpan(intentSize), start, ssb.length());
                                 break;
                             case "br":
                                 ssb.append('\n');
@@ -2858,7 +2879,8 @@ public class HtmlHelper {
                 .removeAttr("x-align")
                 .removeAttr("x-column")
                 .removeAttr("x-dashed")
-                .removeAttr("x-tracking");
+                .removeAttr("x-tracking")
+                .removeAttr("x-border");
     }
 
     static Spanned fromHtml(@NonNull String html, Context context) {

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

@@ -0,0 +1,37 @@
+package eu.faircode.email;
+
+/*
+    This file is part of FairEmail.
+
+    FairEmail is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    FairEmail is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with FairEmail.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2018-2021 by Marcel Bokhorst (M66B)
+*/
+
+import android.os.Parcel;
+import android.text.style.LeadingMarginSpan;
+
+public class IndentSpan extends LeadingMarginSpan.Standard {
+    public IndentSpan(int first, int rest) {
+        super(first, rest);
+    }
+
+    public IndentSpan(int every) {
+        super(every);
+    }
+
+    public IndentSpan(Parcel src) {
+        super(src);
+    }
+}

app/src/main/res/values/dimen.xml

@@ -8,6 +8,7 @@
     <dimen name="bullet_gap_size">6dp</dimen>
     <dimen name="bullet_radius_size">3dp</dimen>
     <dimen name="bullet_indent_size">24dp</dimen>
+    <dimen name="indent_size">24dp</dimen>
     <dimen name="quote_gap_size">6dp</dimen>
     <dimen name="quote_stripe_width">3dp</dimen>
     <dimen name="line_dash_length">3dp</dimen>