add call duration to message bubble

src/main/java/org/thoughtcrime/securesms/components/CallItemView.java

@@ -55,6 +55,12 @@ public class CallItemView extends FrameLayout {
 
   public void setCallItem(boolean isOutgoing, CallInfo callInfo) {
     this.callInfo = callInfo;
+    if (callInfo.state instanceof CallState.Completed) {
+      footer.setCallDuration(((CallState.Completed) callInfo.state).duration);
+    } else {
+      footer.setCallDuration(0); // reset
+    }
+
     if (callInfo.state instanceof CallState.Missed) {
       title.setText(R.string.missed_call);
     } else if (callInfo.state instanceof CallState.Cancelled) {

src/main/java/org/thoughtcrime/securesms/components/ConversationItemFooter.java

@@ -26,6 +26,7 @@ public class ConversationItemFooter extends LinearLayout {
   private ImageView           locationIndicatorView;
   private DeliveryStatusView  deliveryStatusView;
   private Integer             textColor = null;
+  private int                 callDuration = 0;
 
   public ConversationItemFooter(Context context) {
     super(context);
@@ -59,6 +60,11 @@ public class ConversationItemFooter extends LinearLayout {
     }
   }
 
+  /* Call duration in seconds. Only >0 if this is a call message */
+  public void setCallDuration(int duration) {
+    callDuration = duration;
+  }
+
   public void setMessageRecord(@NonNull DcMsg messageRecord) {
     presentDate(messageRecord);
     boolean bookmark = messageRecord.getOriginalMsgId() != 0 || messageRecord.getSavedMsgId() != 0;
@@ -86,9 +92,18 @@ public class ConversationItemFooter extends LinearLayout {
     deliveryStatusView.setTint(color);
   }
 
-  private void presentDate(@NonNull DcMsg messageRecord) {
+  private void presentDate(@NonNull DcMsg dcMsg) {
     dateView.forceLayout();
-    dateView.setText(DateUtils.getExtendedRelativeTimeSpanString(getContext(), messageRecord.getTimestamp()));
+    Context context = getContext();
+    String date = dcMsg.getType() == DcMsg.DC_MSG_CALL?
+      DateUtils.getFormattedCallTime(context, dcMsg.getTimestamp())
+      : DateUtils.getExtendedRelativeTimeSpanString(context, dcMsg.getTimestamp());
+    if (callDuration > 0) {
+      String duration = DateUtils.getFormattedCallDuration(context, callDuration);
+      dateView.setText(context.getString(R.string.call_date_and_duration, date, duration));
+    } else {
+      dateView.setText(date);
+    }
   }
 
   private void presentDeliveryStatus(@NonNull DcMsg messageRecord) {

src/main/java/org/thoughtcrime/securesms/util/DateUtils.java

@@ -119,6 +119,19 @@ public class DateUtils extends android.text.format.DateUtils {
             TimeUnit.MILLISECONDS.toSeconds(millis-(TimeUnit.MILLISECONDS.toMinutes(millis)*60000)));
   }
 
+  public static String getFormattedCallDuration(Context c, int seconds) {
+    if (seconds < 60) {
+      return c.getResources().getQuantityString(R.plurals.n_seconds_ext, seconds, seconds);
+    }
+
+    int mins = seconds / 60;
+    return c.getResources().getQuantityString(R.plurals.n_minutes_ext, mins, mins);
+  }
+
+  public static String getFormattedCallTime(final Context c, final long timestamp) {
+    return getFormattedDateTime(timestamp, DateFormat.is24HourFormat(c)? "HH:mm" : "hh:mm a");
+  }
+
   public static String getFormattedTimespan(Context c, int timestamp) {
     int mins = timestamp / (1000 * 60);
     if (mins / 60 == 0) {

src/main/res/values/strings.xml

@@ -118,11 +118,22 @@
     <!-- Refers to the time a contact was last seen. Shown below contact name in the profile. The placeholder will be replaced by a relative point in time as "3 minutes ago" (see https://momentjs.com for more examples and languages)-->
     <string name="last_seen_relative">Last seen %1$s</string>
     <string name="last_seen_unknown">Last seen: Unknown</string>
+    <!-- Shown in call duration. Avoid abbreviations, prefer full words ex. "N seconds". -->
+    <plurals name="n_seconds_ext">
+        <item quantity="one">%d second</item>
+        <item quantity="other">%d seconds</item>
+    </plurals>
+    <!-- Shown in call duration. Avoid abbreviations, prefer full words ex. "N minutes". -->
+    <plurals name="n_minutes_ext">
+        <item quantity="one">%d minute</item>
+        <item quantity="other">%d minutes</item>
+    </plurals>
     <!-- Shown beside messages that are "N minutes old". Prefer short strings, or well-known abbreviations. -->
     <plurals name="n_minutes">
         <item quantity="one">%d min</item>
         <item quantity="other">%d min</item>
     </plurals>
+
     <!-- Shown beside messages that are "N hours old". Prefer short strings, or well-known abbreviations. -->
     <plurals name="n_hours">
         <item quantity="one">%d hour</item>
@@ -377,6 +388,7 @@
     <string name="declined_call">Declined Call</string>
     <string name="canceled_call">Canceled Call</string>
     <string name="missed_call">Missed Call</string>
+    <string name="call_date_and_duration">%1$s, %2$s</string>
 
     <!-- deprecated -->
     <string name="videochat">Video Chat</string>