From 762a41bec671186593398291d012d5ab31b562ae Mon Sep 17 00:00:00 2001
From: Keith Edmunds <kae@tiger-computing.co.uk>
Date: Sat, 21 Aug 2021 14:22:55 +0100
Subject: [PATCH] Add total time of selected tracks to status bar

---
 app/musicmuster.py |  2 ++
 app/playlists.py   | 25 ++++++++++++++++++++++++-
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/app/musicmuster.py b/app/musicmuster.py
index 4bbd4e8..f04ba4e 100755
--- a/app/musicmuster.py
+++ b/app/musicmuster.py
@@ -71,6 +71,8 @@ class Window(QMainWindow, Ui_MainWindow):
 
         self.menuTest.menuAction().setVisible(Config.TESTMODE)
         self.set_main_window_size()
+        self.lblSumPlaytime = QLabel("")
+        self.statusbar.addPermanentWidget(self.lblSumPlaytime)
 
         self.visible_playlist_tab = self.tabPlaylist.currentWidget
 
diff --git a/app/playlists.py b/app/playlists.py
index 818e0c9..2796a15 100644
--- a/app/playlists.py
+++ b/app/playlists.py
@@ -89,6 +89,8 @@ class PlaylistTab(QTableWidget):
         self.customContextMenuRequested.connect(self._context_menu)
         self.viewport().installEventFilter(self)
 
+        self.itemSelectionChanged.connect(self._select_event)
+
         self.current_track_start_time = None
         self.played_tracks = []
 
@@ -1001,8 +1003,29 @@ class PlaylistTab(QTableWidget):
             PlaylistTracks.add_track(
                 session, self.id, self._get_row_id(row), row)
 
-    def _set_column_widths(self):
+    def _select_event(self):
+        """
+        Called when item selection changes.
+        If multiple rows are selected, display sum of durations in status bar.
+        """
 
+        # Clear label
+        self.master_process.lblSumPlaytime.setText("")
+
+        rows = set([item.row() for item in self.selectedItems()])
+        notes = self._meta_get_notes()
+        ms = 0
+        with Session() as session:
+            for row in rows:
+                if row in notes:
+                    continue
+                ms += Tracks.get_duration(session, self._get_row_id(row))
+        # Only paint message if there are selected track rows
+        if ms > 0:
+            self.master_process.lblSumPlaytime.setText(
+                f"Selected duration: {helpers.ms_to_mmss(ms)}")
+
+    def _set_column_widths(self):
         # Column widths from settings
         with Session() as session:
             for column in range(self.columnCount()):