alicevision · fabiencastan · Dec 6, 2022 · Dec 2, 2022
diff --git a/meshroom/ui/qml/GraphEditor/CompatibilityManager.qml b/meshroom/ui/qml/GraphEditor/CompatibilityManager.qml
@@ -14,7 +14,7 @@ MessageDialog {
     // the UIGraph instance
     property var uigraph
     // alias to underlying compatibilityNodes model
-    readonly property var nodesModel: uigraph.graph.compatibilityNodes
+    readonly property var nodesModel: uigraph ? uigraph.graph.compatibilityNodes : undefined
     // the total number of compatibility issues
     readonly property int issueCount: (nodesModel != undefined) ? nodesModel.count : 0
     // the number of CompatibilityNodes that can be upgraded
@@ -47,7 +47,10 @@ MessageDialog {
 
     title: "Compatibility issues detected"
     text: "This project contains " + issueCount + " node(s) incompatible with the current version of Meshroom."
-    detailedText: "Project was created with Meshroom " + uigraph.graph.fileReleaseVersion + "."
+    detailedText: {
+        let releaseVersion = uigraph ? uigraph.graph.fileReleaseVersion : "0.0"
+        return "Project was created with Meshroom " + releaseVersion + "."
+    }
 
     helperText: upgradableCount ?
                 upgradableCount + " node(s) can be upgraded but this might invalidate already computed data.\n"

diff --git a/meshroom/ui/qml/GraphEditor/GraphEditor.qml b/meshroom/ui/qml/GraphEditor/GraphEditor.qml
@@ -418,7 +418,7 @@ Item {
                 MenuItem {
                     text: "Submit"
                     enabled: nodeMenu.canComputeNode && nodeMenu.canSubmitOrCompute > 1
-                    visible: uigraph.canSubmit
+                    visible: uigraph ? uigraph.canSubmit : false
                     height: visible ? implicitHeight : 0
                     onTriggered: submitRequest(nodeMenu.currentNode)
                 }
@@ -736,7 +736,7 @@ Item {
                             flat: true
                             model: ['Minimum', 'Maximum']
                             implicitWidth: 80
-                            currentIndex: uigraph.layout.depthMode
+                            currentIndex: uigraph ? uigraph.layout.depthMode : -1
                             onActivated: {
                                 uigraph.layout.depthMode = currentIndex
                             }

diff --git a/meshroom/ui/qml/GraphEditor/NodeDocumentation.qml b/meshroom/ui/qml/GraphEditor/NodeDocumentation.qml
@@ -31,7 +31,7 @@ FocusScope {
             selectByMouse: true
             selectionColor: activePalette.highlight
             color: activePalette.text
-            text: node.documentation
+            text: node ? node.documentation : ""
             wrapMode: TextEdit.Wrap
         }
     }

diff --git a/meshroom/ui/qml/GraphEditor/TaskManager.qml b/meshroom/ui/qml/GraphEditor/TaskManager.qml
@@ -39,7 +39,7 @@ Item {
 
     TextMetrics {
         id: nbMetrics
-        text: root.taskManager.nodes.count
+        text: root.taskManager ? root.taskManager.nodes.count : "0"
     }
 
     TextMetrics {
@@ -67,7 +67,7 @@ Item {
         anchors.fill: parent
         ScrollBar.vertical: ScrollBar {}
 
-        model: parent.taskManager.nodes
+        model: parent.taskManager ? parent.taskManager.nodes : null
         spacing: 3
 
         headerPositioning: ListView.OverlayHeader

diff --git a/meshroom/ui/qml/ImageGallery/ImageDelegate.qml b/meshroom/ui/qml/ImageGallery/ImageDelegate.qml
@@ -58,7 +58,7 @@ Item {
             }
             MenuItem {
                 text: "Define As Center Image"
-                property var activeNode: _reconstruction.activeNodes.get("SfMTransform").node
+                property var activeNode: _reconstruction ? _reconstruction.activeNodes.get("SfMTransform").node : null
                 enabled: !root.readOnly && _viewpoint.viewId != -1 && _reconstruction && activeNode
                 onClicked: activeNode.attribute("transformation").value = _viewpoint.viewId.toString()
             }

diff --git a/meshroom/ui/qml/ImageGallery/ImageGallery.qml b/meshroom/ui/qml/ImageGallery/ImageGallery.qml
@@ -35,7 +35,7 @@ Panel {
 
     QtObject {
         id: m
-        property variant currentCameraInit: _reconstruction.tempCameraInit ? _reconstruction.tempCameraInit : root.cameraInit
+        property variant currentCameraInit: _reconstruction && _reconstruction.tempCameraInit ? _reconstruction.tempCameraInit : root.cameraInit
         property variant viewpoints: currentCameraInit ? currentCameraInit.attribute('viewpoints').value : undefined
         property variant intrinsics: currentCameraInit ? currentCameraInit.attribute('intrinsics').value : undefined
         property bool readOnly: root.readOnly || displayHDR.checked
@@ -144,7 +144,7 @@ Panel {
     SensorDBDialog {
         id: sensorDBDialog
         sensorDatabase: cameraInit ? Filepath.stringToUrl(cameraInit.attribute("sensorDatabase").value) : ""
-        readOnly: _reconstruction.computing
+        readOnly: _reconstruction ? _reconstruction.computing : false
         onUpdateIntrinsicsRequest: _reconstruction.rebuildIntrinsics(cameraInit)
     }
 
@@ -273,11 +273,11 @@ Panel {
                         spacing: 2
 
                         property bool valid: Qt.isQtObject(object) // object can be evaluated to null at some point during creation/deletion
-                        property bool inViews: valid && _reconstruction.sfmReport && _reconstruction.isInViews(object)
+                        property bool inViews: valid && _reconstruction && _reconstruction.sfmReport && _reconstruction.isInViews(object)
 
                         // Camera Initialization indicator
                         IntrinsicsIndicator {
-                            intrinsic: parent.valid ? _reconstruction.getIntrinsic(object) : null
+                            intrinsic: parent.valid && _reconstruction ? _reconstruction.getIntrinsic(object) : null
                             metadata: imageDelegate.metadata
                         }
 
@@ -540,7 +540,7 @@ Panel {
 
         RowLayout {
             Layout.fillHeight: false
-            visible: root.cameraInits.count > 1
+            visible: root.cameraInits ? root.cameraInits.count > 1 : false
             Layout.alignment: Qt.AlignHCenter
             spacing: 2
 
@@ -560,22 +560,24 @@ Panel {
                     // display of group indices (real indices still are from
                     // 0 to cameraInits.count - 1)
                     var l = [];
-                    for (var i = 1; i <= root.cameraInits.count; i++) {
-                        l.push(i);
+                    if (root.cameraInits) {
+                        for (var i = 1; i <= root.cameraInits.count; i++) {
+                            l.push(i);
+                        }
                     }
                     return l;
                 }
                 implicitWidth: 40
                 currentIndex: root.cameraInitIndex
                 onActivated: root.changeCurrentIndex(currentIndex)
             }
-            Label { text: "/ " + (root.cameraInits.count) }
+            Label { text: "/ " + (root.cameraInits ? root.cameraInits.count : "Unknown") }
             ToolButton {
                 text: MaterialIcons.navigate_next
                 font.family: MaterialIcons.fontFamily
                 ToolTip.text: "Next Group (Alt+Right)"
                 ToolTip.visible: hovered
-                enabled: nodesCB.currentIndex < root.cameraInits.count - 1
+                enabled: root.cameraInits ? nodesCB.currentIndex < root.cameraInits.count - 1 : false
                 onClicked: nodesCB.incrementCurrentIndex()
             }
         }
@@ -617,10 +619,10 @@ Panel {
             Layout.minimumWidth: childrenRect.width
             ToolTip.text: label + " Estimated Cameras"
             iconText: MaterialIcons.videocam
-            label: _reconstruction.nbCameras ? _reconstruction.nbCameras.toString() : "-"
+            label: _reconstruction && _reconstruction.nbCameras ? _reconstruction.nbCameras.toString() : "-"
             padding: 3
 
-            enabled: _reconstruction.cameraInit && _reconstruction.nbCameras
+            enabled: _reconstruction ? _reconstruction.cameraInit && _reconstruction.nbCameras : false
             checkable: true
             checked: false
 
@@ -646,10 +648,10 @@ Panel {
             Layout.minimumWidth: childrenRect.width
             ToolTip.text: label + " Non Estimated Cameras"
             iconText: MaterialIcons.videocam_off
-            label: _reconstruction.nbCameras ? ((m.viewpoints ? m.viewpoints.count : 0) - _reconstruction.nbCameras.toString()).toString() : "-"
+            label: _reconstruction && _reconstruction.nbCameras ? ((m.viewpoints ? m.viewpoints.count : 0) - _reconstruction.nbCameras.toString()).toString() : "-"
             padding: 3
 
-            enabled: _reconstruction.cameraInit && _reconstruction.nbCameras
+            enabled: _reconstruction ? _reconstruction.cameraInit && _reconstruction.nbCameras : false
             checkable: true
             checked: false
 
@@ -704,7 +706,7 @@ Panel {
         MaterialToolLabelButton {
             id: displayHDR
             Layout.minimumWidth: childrenRect.width
-            property var activeNode: _reconstruction.activeNodes.get("LdrToHdrMerge").node
+            property var activeNode: _reconstruction ? _reconstruction.activeNodes.get("LdrToHdrMerge").node : null
             ToolTip.text: "Visualize HDR images: " + (activeNode ? activeNode.label : "No Node")
             iconText: MaterialIcons.filter
             label: activeNode ? activeNode.attribute("nbBrackets").value : ""
@@ -747,7 +749,7 @@ Panel {
             id: imageProcessing
             Layout.minimumWidth: childrenRect.width
 
-            property var activeNode: _reconstruction.activeNodes.get("ImageProcessing").node
+            property var activeNode: _reconstruction ? _reconstruction.activeNodes.get("ImageProcessing").node : null
             font.pointSize: 15
             padding: 0
             ToolTip.text: "Preprocessed Images: " + (activeNode ? activeNode.label : "No Node")

diff --git a/meshroom/ui/qml/LiveSfmView.qml b/meshroom/ui/qml/LiveSfmView.qml
@@ -13,7 +13,7 @@ Panel {
     id: root
 
     property variant reconstruction
-    readonly property variant liveSfmManager: reconstruction.liveSfmManager
+    readonly property variant liveSfmManager: reconstruction ? reconstruction.liveSfmManager : null
 
     title: "Live Reconstruction"
     icon: Label {
@@ -41,7 +41,7 @@ Panel {
             width: parent.width
             GroupBox {
                 Layout.fillWidth: true
-                enabled: !liveSfmManager.running
+                enabled: liveSfmManager ? !liveSfmManager.running : false
 
                 GridLayout {
                     width: parent.width
@@ -59,7 +59,7 @@ Panel {
                             id: folderPath
                             Layout.fillWidth: true
                             selectByMouse: true
-                            text: liveSfmManager.folder
+                            text: liveSfmManager ? liveSfmManager.folder : ""
                             placeholderText: "Select a Folder"
                         }
                         ToolButton {
@@ -90,8 +90,8 @@ Panel {
             Button {                
                 Layout.alignment: Qt.AlignCenter
                 text: checked ? "Stop" : "Start"
-                enabled: liveSfmManager.running || folderPath.text.trim() != ''
-                checked: liveSfmManager.running
+                enabled: liveSfmManager ? liveSfmManager.running || folderPath.text.trim() != '' : false
+                checked: liveSfmManager ? liveSfmManager.running : false
                 onClicked: {
                     if(!liveSfmManager.running)
                         liveSfmManager.start(folderPath.text, minImg_SB.value)