Initial commit: Add playlist downloader project with UI and core functionality

src/ui/components/loading_modal_qt.py

@@ -0,0 +1,138 @@
+"""
+LoadingModal pour PyQt6 - Modal de chargement avec barre de progression.
+"""
+from PyQt6.QtWidgets import QDialog, QVBoxLayout, QLabel, QProgressBar
+from PyQt6.QtCore import Qt, QTimer
+from PyQt6.QtGui import QFont
+
+
+class LoadingModal(QDialog):
+    """Modal de chargement avec barre de progression déterminée ou indéterminée."""
+
+    def __init__(self, parent, title: str = "Loading", message: str = "Please wait...", determinate: bool = False):
+        """
+        Créer une modal de chargement.
+
+        Args:
+            parent: Widget parent
+            title: Titre
+            message: Message de chargement
+            determinate: Si True, barre de progression déterminée (0→100). Sinon, indéterminée
+        """
+        super().__init__(parent)
+        self.setWindowTitle(title)
+        self.setModal(False)
+        self.setFixedSize(500, 250)
+        self.setStyleSheet("""
+            QDialog {
+                background-color: #212121;
+                border-radius: 8px;
+            }
+            QLabel {
+                color: #ffffff;
+            }
+        """)
+
+        # Layout
+        layout = QVBoxLayout()
+        layout.setContentsMargins(30, 30, 30, 30)
+        layout.setSpacing(15)
+
+        # Titre
+        title_label = QLabel(title)
+        title_font = QFont()
+        title_font.setPointSize(16)
+        title_font.setBold(True)
+        title_label.setFont(title_font)
+        layout.addWidget(title_label)
+
+        # Message
+        self._msg_label = QLabel(message)
+        msg_font = QFont()
+        msg_font.setPointSize(11)
+        self._msg_label.setFont(msg_font)
+        layout.addWidget(self._msg_label)
+
+        # Progress bar
+        self._progress = QProgressBar()
+        self._progress.setStyleSheet("""
+            QProgressBar {
+                background-color: #3a3a3a;
+                border: none;
+                border-radius: 5px;
+                height: 8px;
+            }
+            QProgressBar::chunk {
+                background-color: #2196F3;
+                border-radius: 5px;
+            }
+        """)
+
+        if determinate:
+            self._progress.setMinimum(0)
+            self._progress.setMaximum(100)
+            self._progress.setValue(0)
+            self._determinate = True
+        else:
+            self._progress.setMinimum(0)
+            self._progress.setMaximum(0)
+            self._determinate = False
+            self._animation_timer = QTimer()
+            self._animation_timer.timeout.connect(self._animate_progress)
+            self._animation_timer.start(50)
+
+        layout.addWidget(self._progress)
+        layout.addStretch()
+
+        self.setLayout(layout)
+
+        # Centre la modal
+        self.move(parent.x() + parent.width() // 2 - 250,
+                  parent.y() + parent.height() // 2 - 125)
+
+    def update_message(self, message: str):
+        """Mettre à jour le message."""
+        try:
+            self._msg_label.setText(message)
+            self.repaint()
+        except Exception:
+            pass
+
+    def set_progress(self, value: float):
+        """Définir la progression (0.0 à 1.0) si en mode déterminé."""
+        try:
+            if self._determinate:
+                percent = max(0, min(100, int(value * 100)))
+                self._progress.setValue(percent)
+                self.repaint()
+        except Exception:
+            pass
+
+    def _animate_progress(self):
+        """Animation pour la barre indéterminée."""
+        try:
+            if not self._determinate:
+                current = self._progress.value()
+                self._progress.setValue((current + 5) % 100)
+        except Exception:
+            pass
+
+    def close(self):
+        """Fermer la modal."""
+        try:
+            if hasattr(self, '_animation_timer'):
+                self._animation_timer.stop()
+            self.hide()
+            self.deleteLater()
+        except Exception:
+            pass
+
+    def closeEvent(self, event):
+        """Gérer la fermeture."""
+        try:
+            if hasattr(self, '_animation_timer'):
+                self._animation_timer.stop()
+        except Exception:
+            pass
+        event.accept()
+