messagegui: fix mapping select to correct message

Author: thyttan

apps/messagegui/app.js

@@ -297,7 +297,10 @@ function showMessagesScroller(msg, persist, alreadyProcessed) {
     }
 
     var lines = [];
-    lines = g.wrapString(msgLocal.title||msgLocal.sender||msgLocal.subject||msgLocal.src||"No Title", g.getWidth()-10);
+    const TITLE_STRING = "".concat(msgLocal.title, msgLocal.title&&"\n",
+      msgLocal.sender, msgLocal.sender&&"\n", msgLocal.subject,
+      msgLocal.subject&&"\n", msgLocal.src) || "No Title";
+    lines = g.wrapString(TITLE_STRING, g.getWidth()-10);
     for (let i=0; i<lines.length; i++) {
       titleLines.push(i + (messagesWrapped[0]?messagesWrapped[0].length:0) +
         (messagesWrapped[1]?messagesWrapped[1].length:0));
@@ -368,8 +371,12 @@ function showMessagesScroller(msg, persist, alreadyProcessed) {
       prevScrollIdx = scrollIdx;
     }, select : function(scrollIdx, touch) {
       let msgSelect;
-      for (let i = titleLines.length-1; i>=0 ; i--) {
-        if (scrollIdx>=titleLines[i]) {
+      let titleLinesInitials = [titleLines[0]];
+      for (let i=1; i<titleLines.length; i++) {
+        if (titleLines[i]-titleLines[i-1] > 1) {titleLinesInitials.push(titleLines[i]);}
+      }
+      for (let i=titleLines.length-1; i>=0 ; i--) {
+        if (scrollIdx>=titleLinesInitials[i]) {
           msgSelect = MESSAGES[i + updatedProcessed.startIdx];
           break;
         }