[ui] Disable projects when the file is missing

Author: Alxiice

meshroom/ui/app.py

@@ -3,6 +3,7 @@
 import re
 import argparse
 import json
+from enum import Enum
 
 from PySide6 import __version__ as PySideVersion
 from PySide6 import QtCore
@@ -34,6 +35,12 @@
 from meshroom.ui import commands
 
 
+class FileStatus(Enum):
+    MISSING=0
+    EXISTS=1
+    ERROR=2  # If the file exists but have errors like missing nodes, file content corruption...
+
+
 class MessageHandler:
     """
     MessageHandler that translates Qt logs to Python logging system.
@@ -422,7 +429,8 @@ def _getRecentProjectFilesFromSettings(self) -> list[dict[str, str]]:
             settings.setArrayIndex(i)
             path = settings.value("filepath")
             if path:
-                p = {"path": path, "thumbnail": self._retrieveThumbnailPath(path)}
+                fileStatus = FileStatus.EXISTS if os.path.isfile(path) else FileStatus.MISSING
+                p = {"path": path, "thumbnail": self._retrieveThumbnailPath(path), "status": fileStatus.value}
                 projects.append(p)
         settings.endArray()
         settings.endGroup()
@@ -443,6 +451,7 @@ def _updateRecentProjectFilesThumbnails(self) -> None:
         for project in self._recentProjectFiles:
             path = project["path"]
             project["thumbnail"] = self._retrieveThumbnailPath(path)
+            project["status"] = os.path.isfile(path)
 
     @Slot(str)
     @Slot(QUrl)
@@ -479,7 +488,7 @@ def addRecentProjectFile(self, projectFile) -> None:
             del projects[idx]  # If so, delete its entry
 
         # Insert the newest entry at the top of the list
-        projects.insert(0, {"path": projectFileNorm, "thumbnail": ""})
+        projects.insert(0, {"path": projectFileNorm, "thumbnail": "", "status": FileStatus.EXISTS})
 
         # Only keep the first 40 projects
         maxNbProjects = 40

meshroom/ui/qml/Application.qml

@@ -725,6 +725,8 @@ Page {
                         id: recentFilesMenuItems
                         model: MeshroomApp.recentProjectFiles
                         MenuItem {
+                            enabled: modelData["status"] != 0
+                            
                             onTriggered: ensureSaved(function() {
                                 openRecentMenu.dismiss()
                                 if (_reconstruction.load(modelData["path"])) {

meshroom/ui/qml/Homepage.qml

@@ -284,7 +284,7 @@ Page {
                         // Request latest thumbnail paths
                         if (mainStack.currentItem instanceof Homepage)
                             MeshroomApp.updateRecentProjectFilesThumbnails()
-                        return [{"path": null, "thumbnail": null}].concat(MeshroomApp.recentProjectFiles)
+                        return [{"path": null, "thumbnail": null, "status": null}].concat(MeshroomApp.recentProjectFiles)
                     }
 
                     // Update grid item when corresponding thumbnail is computed
@@ -325,6 +325,10 @@ Page {
                             height: gridView.cellHeight * 0.95 - project.height
                             width: gridView.cellWidth * 0.9
 
+                            // Handle case where the file is missing
+                            property bool fileExists: modelData["status"] != 0
+                            opacity: fileExists ? 1.0 : 0.3
+
                             ToolTip.visible: hovered
                             ToolTip.text: modelData["path"] ? modelData["path"] : "Open browser to select a project file"
 
@@ -372,6 +376,7 @@ Page {
                                 id: projectContextMenu
 
                                 MenuItem {
+                                    enabled: projectDelegate.fileExists
                                     text: "Open"
                                     onTriggered: {                                        
                                         if (_reconstruction.load(modelData["path"])) {