Moved playlist tabs related widgets to its own files.

wobuzz/ui/playlist_tabs/tab_bar.py

@@ -0,0 +1,35 @@
+#!/usr/bin/python3
+
+from PyQt6.QtGui import QDragEnterEvent
+from PyQt6.QtWidgets import QTabBar
+
+
+class PlaylistTabBar(QTabBar):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+
+        self.tab_widget = parent
+        self.app = parent.library.app
+
+        self.setAcceptDrops(True)
+
+        self.tabBarClicked.connect(self.on_click)
+        self.tabBarDoubleClicked.connect(self.on_doubleclick)
+
+    def dragEnterEvent(self, event: QDragEnterEvent):
+        index = self.tabAt(event.position().toPoint())
+
+        self.tab_widget.setCurrentIndex(index)
+
+    def on_click(self, index):
+        playlist_view = self.tab_widget.widget(index)
+        playlist = playlist_view.playlist
+
+        self.app.gui.clicked_playlist = playlist
+
+    def on_doubleclick(self, index):
+        playlist_view = self.tab_widget.widget(index)
+        playlist = playlist_view.playlist
+
+        self.app.player.start_playlist(playlist)
+