[widgets][assetwidget] Allow loading of invalid asset

This will allow loading of unfinished experiments.

The editor tab will show an icon when dealing with
invalid asset content.

beat/editor/widgets/assetwidget.py

@@ -31,6 +31,8 @@ from PyQt5.QtCore import pyqtSlot
 from PyQt5.QtCore import QFileSystemWatcher
 from PyQt5.QtCore import QTimer
 
+from PyQt5.QtGui import QIcon
+
 from PyQt5.QtWidgets import QLabel
 from PyQt5.QtWidgets import QMenu
 from PyQt5.QtWidgets import QPushButton
@@ -41,6 +43,7 @@ from PyQt5.QtWidgets import QHBoxLayout
 from PyQt5.QtWidgets import QWidget
 from PyQt5.QtWidgets import QStackedWidget
 from PyQt5.QtWidgets import QMessageBox
+from PyQt5.QtWidgets import QStyle
 
 from ..backend.asset import AssetType
 from ..backend.asset import Asset
@@ -226,6 +229,15 @@ class AssetWidget(QWidget):
         self.asset_name_label.setText(self.current_asset.name)
         self.save_button.setEnabled(False)
 
+    def __update_editors_icon(self, is_valid):
+        tab_index = self.tab_widget.indexOf(self.editors)
+        tab_icon = (
+            self.style().standardIcon(QStyle.SP_MessageBoxCritical)
+            if not is_valid
+            else QIcon()
+        )
+        self.tab_widget.setTabIcon(tab_index, tab_icon)
+
     def __clear_watcher(self):
         """Clears the content of the file system watcher"""
 
@@ -397,13 +409,28 @@ class AssetWidget(QWidget):
         self.__clear_watcher()
 
         is_valid, errors = asset.is_valid()
+        do_load = False
+
         if not is_valid:
-            QMessageBox.critical(
-                self,
+            message_box = QMessageBox(
+                QMessageBox.Critical,
                 self.tr("Invalid asset"),
-                self.tr(f"The asset you are trying to load is invalid\n{errors}"),
+                self.tr(f"The asset you are trying to load is invalid."),
             )
+            message_box.setDetailedText(f"{errors}")
+            message_box.addButton(QMessageBox.Cancel)
+            load_button = message_box.addButton(QMessageBox.Ignore)
+            load_button.setText(self.tr("Load anyway"))
+
+            result = message_box.exec_()
+            do_load = result == QMessageBox.Ignore
+
         else:
+            do_load = True
+
+        if do_load:
+            self.__update_editors_icon(is_valid)
+
             declaration = asset.declaration
             if asset.type == AssetType.ALGORITHM:
                 if declaration.get("api_version", 0) < 2:
@@ -455,6 +482,9 @@ class AssetWidget(QWidget):
         with FileBlocker(self.watcher, declaration_path):
             self.current_asset.declaration = original
 
+        is_valid, _ = self.current_asset.is_valid()
+        self.__update_editors_icon(is_valid)
+
         if self.current_asset.type == AssetType.ALGORITHM:
             update_code(self.current_asset)