Assembly: Initial implementation (#10427)

* Assembly: Initial implementation.
* Disable Assembly wb as it's WIP.
* Stub code for handling assembly import.

Co-authored-by: sliptonic <shopinthewoods@gmail.com>
Co-authored-by: Paddle <PaddleStroke@users.noreply.github.com>

cMake/FreeCAD_Helpers/InitializeFreeCADBuildOptions.cmake

@@ -118,6 +118,7 @@ macro(InitializeFreeCADBuildOptions)
     option(BUILD_PART "Build the FreeCAD part module" ON)
     option(BUILD_PART_DESIGN "Build the FreeCAD part design module" ON)
     option(BUILD_PATH "Build the FreeCAD path module" ON)
+    option(BUILD_ASSEMBLY "Build the FreeCAD Assembly module" ON)
     option(BUILD_PLOT "Build the FreeCAD plot module" ON)
     option(BUILD_POINTS "Build the FreeCAD points module" ON)
     option(BUILD_REVERSEENGINEERING "Build the FreeCAD reverse engineering module" ON)

src/Gui/PreferencePages/DlgSettingsWorkbenchesImp.cpp

@@ -433,7 +433,7 @@ QStringList DlgSettingsWorkbenchesImp::getDisabledWorkbenches()
     ParameterGrp::handle hGrp;
 
     hGrp = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Workbenches");
-    disabled_wbs = QString::fromStdString(hGrp->GetASCII("Disabled", "NoneWorkbench,TestWorkbench"));
+    disabled_wbs = QString::fromStdString(hGrp->GetASCII("Disabled", "NoneWorkbench,TestWorkbench,AssemblyWorkbench"));
 #if QT_VERSION >= QT_VERSION_CHECK(5,15,0)
     unfiltered_disabled_wbs_list = disabled_wbs.split(QLatin1String(","), Qt::SkipEmptyParts);
 #else

src/Mod/AddonManager/Addon.py

@@ -610,7 +610,7 @@ class Addon:
         wbName = self.get_workbench_name()
 
         # Add the wb to the list of disabled if it was not already
-        disabled_wbs = pref.GetString("Disabled", "NoneWorkbench,TestWorkbench")
+        disabled_wbs = pref.GetString("Disabled", "NoneWorkbench,TestWorkbench,AssemblyWorkbench")
         # print(f"start disabling {disabled_wbs}")
         disabled_wbs_list = disabled_wbs.split(",")
         if not (wbName in disabled_wbs_list):
@@ -641,7 +641,7 @@ class Addon:
     def remove_from_disabled_wbs(self, wbName: str):
         pref = fci.ParamGet("User parameter:BaseApp/Preferences/Workbenches")
 
-        disabled_wbs = pref.GetString("Disabled", "NoneWorkbench,TestWorkbench")
+        disabled_wbs = pref.GetString("Disabled", "NoneWorkbench,TestWorkbench,AssemblyWorkbench")
         # print(f"start enabling : {disabled_wbs}")
         disabled_wbs_list = disabled_wbs.split(",")
         disabled_wbs = ""

src/Mod/Assembly/AssemblyGlobal.h

@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+/****************************************************************************
+ *                                                                          *
+ *   Copyright (c) 2023 Ondsel <development@ondsel.com>                     *
+ *                                                                          *
+ *   This file is part of FreeCAD.                                          *
+ *                                                                          *
+ *   FreeCAD is free software: you can redistribute it and/or modify it     *
+ *   under the terms of the GNU Lesser General Public License as            *
+ *   published by the Free Software Foundation, either version 2.1 of the   *
+ *   License, or (at your option) any later version.                        *
+ *                                                                          *
+ *   FreeCAD is distributed in the hope that it will be useful, but         *
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of             *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU       *
+ *   Lesser General Public License for more details.                        *
+ *                                                                          *
+ *   You should have received a copy of the GNU Lesser General Public       *
+ *   License along with FreeCAD. If not, see                                *
+ *   <https://www.gnu.org/licenses/>.                                       *
+ *                                                                          *
+ ***************************************************************************/
+
+#include <FCGlobal.h>
+
+#ifndef ASSEMBLY_GLOBAL_H
+#define ASSEMBLY_GLOBAL_H
+
+
+ // Assembly
+#ifndef AssemblyExport
+#ifdef Assembly_EXPORTS
+#       define AssemblyExport   FREECAD_DECL_EXPORT
+#else
+#       define AssemblyExport   FREECAD_DECL_IMPORT
+#endif
+#endif
+
+// AssemblyGui
+#ifndef AssemblyGuiExport
+#ifdef AssemblyGui_EXPORTS
+#  define AssemblyGuiExport   FREECAD_DECL_EXPORT
+#else
+#  define AssemblyGuiExport   FREECAD_DECL_IMPORT
+#endif
+#endif
+
+#endif //ASSEMBLY_GLOBAL_H

src/Mod/Assembly/AssemblyImport.py

@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+# /****************************************************************************
+#                                                                           *
+#    Copyright (c) 2023 Ondsel <development@ondsel.com>                     *
+#                                                                           *
+#    This file is part of FreeCAD.                                          *
+#                                                                           *
+#    FreeCAD is free software: you can redistribute it and/or modify it     *
+#    under the terms of the GNU Lesser General Public License as            *
+#    published by the Free Software Foundation, either version 2.1 of the   *
+#    License, or (at your option) any later version.                        *
+#                                                                           *
+#    FreeCAD is distributed in the hope that it will be useful, but         *
+#    WITHOUT ANY WARRANTY; without even the implied warranty of             *
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU       *
+#    Lesser General Public License for more details.                        *
+#                                                                           *
+#    You should have received a copy of the GNU Lesser General Public       *
+#    License along with FreeCAD. If not, see                                *
+#    <https://www.gnu.org/licenses/>.                                       *
+#                                                                           *
+# ***************************************************************************/
+
+
+def open(filename):
+    doc = App.activeDocument()
+    # here you do all what is needed with filename, read, classify data, create corresponding FreeCAD objects
+    doc.recompute()
+
+
+def insert(filename, docname):
+    print("Inserting file: " + filename + " into document: " + docname)

src/Mod/Assembly/AssemblyTests/TestCore.py

@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+# /****************************************************************************
+#                                                                           *
+#    Copyright (c) 2023 Ondsel <development@ondsel.com>                     *
+#                                                                           *
+#    This file is part of FreeCAD.                                          *
+#                                                                           *
+#    FreeCAD is free software: you can redistribute it and/or modify it     *
+#    under the terms of the GNU Lesser General Public License as            *
+#    published by the Free Software Foundation, either version 2.1 of the   *
+#    License, or (at your option) any later version.                        *
+#                                                                           *
+#    FreeCAD is distributed in the hope that it will be useful, but         *
+#    WITHOUT ANY WARRANTY; without even the implied warranty of             *
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU       *
+#    Lesser General Public License for more details.                        *
+#                                                                           *
+#    You should have received a copy of the GNU Lesser General Public       *
+#    License along with FreeCAD. If not, see                                *
+#    <https://www.gnu.org/licenses/>.                                       *
+#                                                                           *
+# ***************************************************************************/
+
+import FreeCAD
+import Part
+import unittest
+
+
+class TestCore(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        """setUpClass()...
+        This method is called upon instantiation of this test class.  Add code and objects here
+        that are needed for the duration of the test() methods in this class.  In other words,
+        set up the 'global' test environment here; use the `setUp()` method to set up a 'local'
+        test environment.
+        This method does not have access to the class `self` reference, but it
+        is able to call static methods within this same class.
+        """
+        pass
+
+    @classmethod
+    def tearDownClass(cls):
+        """tearDownClass()...
+        This method is called prior to destruction of this test class.  Add code and objects here
+        that cleanup the test environment after the test() methods in this class have been executed.
+        This method does not have access to the class `self` reference.  This method
+        is able to call static methods within this same class.
+        """
+        pass
+
+        # Close geometry document without saving
+        # FreeCAD.closeDocument(FreeCAD.ActiveDocument.Name)
+
+    # Setup and tear down methods called before and after each unit test
+    def setUp(self):
+        """setUp()...
+        This method is called prior to each `test()` method.  Add code and objects here
+        that are needed for multiple `test()` methods.
+        """
+        self.doc = FreeCAD.ActiveDocument
+        self.con = FreeCAD.Console
+
+    def tearDown(self):
+        """tearDown()...
+        This method is called after each test() method. Add cleanup instructions here.
+        Such cleanup instructions will likely undo those in the setUp() method.
+        """
+        pass
+
+    def test00(self):
+        pass
+
+        self.assertTrue(True)

src/Mod/Assembly/AssemblyTests/TestTEMPLATE.py

@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+# /****************************************************************************
+#                                                                           *
+#    Copyright (c) 2023 Ondsel <development@ondsel.com>                     *
+#                                                                           *
+#    This file is part of FreeCAD.                                          *
+#                                                                           *
+#    FreeCAD is free software: you can redistribute it and/or modify it     *
+#    under the terms of the GNU Lesser General Public License as            *
+#    published by the Free Software Foundation, either version 2.1 of the   *
+#    License, or (at your option) any later version.                        *
+#                                                                           *
+#    FreeCAD is distributed in the hope that it will be useful, but         *
+#    WITHOUT ANY WARRANTY; without even the implied warranty of             *
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU       *
+#    Lesser General Public License for more details.                        *
+#                                                                           *
+#    You should have received a copy of the GNU Lesser General Public       *
+#    License along with FreeCAD. If not, see                                *
+#    <https://www.gnu.org/licenses/>.                                       *
+#                                                                           *
+# ***************************************************************************/
+
+import FreeCAD
+import Part
+import unittest
+
+
+class TestTEMPLATE(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        """setUpClass()...
+        This method is called upon instantiation of this test class.  Add code and objects here
+        that are needed for the duration of the test() methods in this class.  In other words,
+        set up the 'global' test environment here; use the `setUp()` method to set up a 'local'
+        test environment.
+        This method does not have access to the class `self` reference, but it
+        is able to call static methods within this same class.
+        """
+        pass
+
+    @classmethod
+    def tearDownClass(cls):
+        """tearDownClass()...
+        This method is called prior to destruction of this test class.  Add code and objects here
+        that cleanup the test environment after the test() methods in this class have been executed.
+        This method does not have access to the class `self` reference.  This method
+        is able to call static methods within this same class.
+        """
+        pass
+
+        # Close geometry document without saving
+        # FreeCAD.closeDocument(FreeCAD.ActiveDocument.Name)
+
+    # Setup and tear down methods called before and after each unit test
+    def setUp(self):
+        """setUp()...
+        This method is called prior to each `test()` method.  Add code and objects here
+        that are needed for multiple `test()` methods.
+        """
+        self.doc = FreeCAD.ActiveDocument
+        self.con = FreeCAD.Console
+
+    def tearDown(self):
+        """tearDown()...
+        This method is called after each test() method. Add cleanup instructions here.
+        Such cleanup instructions will likely undo those in the setUp() method.
+        """
+        pass
+
+    def test00(self):
+        pass
+
+        self.assertTrue(True)

src/Mod/Assembly/CMakeLists.txt

@@ -0,0 +1,63 @@
+add_subdirectory(App)
+
+if(BUILD_GUI)
+    add_subdirectory(Gui)
+endif(BUILD_GUI)
+
+set(Assembly_Scripts
+    Init.py
+    Commands.py
+    TestAssemblyWorkbench.py
+    Preferences.py
+    AssemblyImport.py
+)
+
+if(BUILD_GUI)
+    list (APPEND Assembly_Scripts InitGui.py)
+endif(BUILD_GUI)
+
+INSTALL(
+    FILES
+    ${Assembly_Scripts}
+    DESTINATION
+    Mod/Assembly
+)
+
+SET(AssemblyScripts_SRCS
+    Assembly/__init__.py
+)
+
+
+SET(AssemblyTests_SRCS
+    AssemblyTests/__init__.py
+    AssemblyTests/TestCore.py
+)
+
+
+SET(all_files
+    ${AssemblyTests_SRCS}
+    ${AssemblyScripts_SRCS}
+)
+
+ADD_CUSTOM_TARGET(AssemblyScripts ALL
+    SOURCES ${all_files}
+)
+
+SET(test_files
+    ${Assembly_Scripts}
+    ${AssemblyTests_SRCS}
+)
+
+ADD_CUSTOM_TARGET(AssemblyTests ALL
+    SOURCES ${test_files}
+)
+
+fc_copy_sources(AssemblyScripts "${CMAKE_BINARY_DIR}/Mod/Assembly" ${all_files})
+fc_copy_sources(AssemblyTests "${CMAKE_BINARY_DIR}/Mod/Assembly" ${test_files})
+
+INSTALL(
+    FILES
+        ${AssemblyTests_SRCS}
+    DESTINATION
+        Mod/Assembly/AssemblyTests
+)

src/Mod/Assembly/Commands.py

@@ -0,0 +1,345 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+# /****************************************************************************
+#                                                                           *
+#    Copyright (c) 2023 Ondsel <development@ondsel.com>                     *
+#                                                                           *
+#    This file is part of FreeCAD.                                          *
+#                                                                           *
+#    FreeCAD is free software: you can redistribute it and/or modify it     *
+#    under the terms of the GNU Lesser General Public License as            *
+#    published by the Free Software Foundation, either version 2.1 of the   *
+#    License, or (at your option) any later version.                        *
+#                                                                           *
+#    FreeCAD is distributed in the hope that it will be useful, but         *
+#    WITHOUT ANY WARRANTY; without even the implied warranty of             *
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU       *
+#    Lesser General Public License for more details.                        *
+#                                                                           *
+#    You should have received a copy of the GNU Lesser General Public       *
+#    License along with FreeCAD. If not, see                                *
+#    <https://www.gnu.org/licenses/>.                                       *
+#                                                                           *
+# ***************************************************************************/
+
+import os, re
+import FreeCAD as App
+
+from PySide.QtCore import QT_TRANSLATE_NOOP
+
+if App.GuiUp:
+    import FreeCADGui as Gui
+    from PySide import QtCore, QtGui, QtWidgets
+
+# translate = App.Qt.translate
+
+__title__ = "Assembly Commands"
+__author__ = "Ondsel"
+__url__ = "https://www.freecad.org"
+
+
+def activeAssembly():
+    doc = Gui.ActiveDocument
+
+    if doc is None or doc.ActiveView is None:
+        return None
+
+    active_part = doc.ActiveView.getActiveObject("part")
+
+    if active_part is not None and active_part.Type == "Assembly":
+        return active_part
+
+    return None
+
+
+def isDocTemporary(doc):
+    # Guard against older versions of FreeCad which don't have the Temporary attribute
+    try:
+        docTemporary = doc.Temporary
+    except AttributeError:
+        docTemporary = False
+    return docTemporary
+
+
+def labelName(obj):
+    if obj:
+        if obj.Name == obj.Label:
+            txt = obj.Label
+        else:
+            txt = obj.Label + " (" + obj.Name + ")"
+        return txt
+    else:
+        return None
+
+
+class CommandCreateAssembly:
+    def __init__(self):
+        pass
+
+    def GetResources(self):
+        return {
+            "Pixmap": "Geoassembly",
+            "MenuText": QT_TRANSLATE_NOOP("Assembly_CreateAssembly", "Create Assembly"),
+            "Accel": "A",
+            "ToolTip": QT_TRANSLATE_NOOP(
+                "Assembly_CreateAssembly",
+                "Create an assembly object in the current document.",
+            ),
+            "CmdType": "ForEdit",
+        }
+
+    def IsActive(self):
+        return App.ActiveDocument is not None
+
+    def Activated(self):
+        App.setActiveTransaction("Create assembly")
+        assembly = App.ActiveDocument.addObject("App::Part", "Assembly")
+        assembly.Type = "Assembly"
+        Gui.ActiveDocument.ActiveView.setActiveObject("part", assembly)
+        App.closeActiveTransaction()
+
+
+class CommandInsertLink:
+    def __init__(self):
+        pass
+
+    def GetResources(self):
+        tooltip = "<p>Insert a Link into the assembly. "
+        tooltip += (
+            "This will create dynamic links to parts/bodies/primitives/assemblies, "
+        )
+        tooltip += "which can be in this document or in another document "
+        tooltip += "that is <b>open in the current session</b></p>"
+        tooltip += "<p>Press shift to add several links while clicking on the view."
+
+        return {
+            "Pixmap": "Assembly_InsertLink",
+            "MenuText": QT_TRANSLATE_NOOP("Assembly_InsertLink", "Insert Link"),
+            "Accel": "I",
+            "ToolTip": QT_TRANSLATE_NOOP("Assembly_InsertLink", tooltip),
+            "CmdType": "ForEdit",
+        }
+
+    def IsActive(self):
+        return activeAssembly() is not None
+
+    def Activated(self):
+        assembly = activeAssembly()
+        if not assembly:
+            return
+        view = Gui.activeDocument().activeView()
+
+        self.panel = TaskAssemblyInsertLink(assembly, view)
+        Gui.Control.showDialog(self.panel)
+
+
+class TaskAssemblyInsertLink(QtCore.QObject):
+    def __init__(self, assembly, view):
+        super().__init__()
+
+        self.assembly = assembly
+        self.view = view
+        self.doc = App.ActiveDocument
+
+        self.form = Gui.PySideUic.loadUi(":/panels/TaskAssemblyInsertLink.ui")
+        self.form.installEventFilter(self)
+
+        # Actions
+        self.form.openFileButton.clicked.connect(self.openFile)
+        self.form.partList.itemClicked.connect(self.onItemClicked)
+        self.form.filterPartList.textChanged.connect(self.onFilterChange)
+
+        self.allParts = []
+        self.partsDoc = []
+        self.numberOfAddedParts = 0
+        self.translation = 0
+        self.partMoving = False
+
+        self.buildPartList()
+
+        App.setActiveTransaction("Insert Link")
+
+    def accept(self):
+        App.closeActiveTransaction()
+        self.deactivated()
+        return True
+
+    def reject(self):
+        App.closeActiveTransaction(True)
+        self.deactivated()
+        return True
+
+    def deactivated(self):
+        if self.partMoving:
+            self.endMove()
+
+    def buildPartList(self):
+        self.allParts.clear()
+        self.partsDoc.clear()
+
+        docList = App.listDocuments().values()
+
+        for doc in docList:
+            if isDocTemporary(doc):
+                continue
+
+            for obj in doc.findObjects("App::Part"):
+                # we don't want to link to itself
+                if obj != self.assembly:
+                    self.allParts.append(obj)
+                    self.partsDoc.append(doc)
+
+            for obj in doc.findObjects("PartDesign::Body"):
+                # but only those at top level (not nested inside other containers)
+                if obj.getParentGeoFeatureGroup() is None:
+                    self.allParts.append(obj)
+                    self.partsDoc.append(doc)
+
+        self.form.partList.clear()
+        for part in self.allParts:
+            newItem = QtGui.QListWidgetItem()
+            newItem.setText(part.Document.Name + "#" + labelName(part))
+            newItem.setIcon(part.ViewObject.Icon)
+            self.form.partList.addItem(newItem)
+
+    def onFilterChange(self):
+        filterStr = self.form.filterPartList.text().strip()
+        for x in range(self.form.partList.count()):
+            item = self.form.partList.item(x)
+            # check the items's text match the filter ignoring the case
+            matchStr = re.search(filterStr, item.text(), flags=re.IGNORECASE)
+            if filterStr and not matchStr:
+                item.setHidden(True)
+            else:
+                item.setHidden(False)
+
+    def openFile(self):
+        filename = None
+        importDoc = None
+        importDocIsOpen = False
+        dialog = QtGui.QFileDialog(
+            QtGui.QApplication.activeWindow(),
+            "Select FreeCAD document to import part from",
+        )
+
+        dialog.setNameFilter(
+            "Supported Formats *.FCStd *.fcstd (*.FCStd *.fcstd);;All files (*.*)"
+        )
+        if dialog.exec_():
+            filename = str(dialog.selectedFiles()[0])
+            # look only for filenames, not paths, as there are problems on WIN10 (Address-translation??)
+            requestedFile = os.path.split(filename)[1]
+            # see whether the file is already open
+            for d in App.listDocuments().values():
+                recentFile = os.path.split(d.FileName)[1]
+                if requestedFile == recentFile:
+                    importDocIsOpen = True
+                    break
+            # if not, open it
+            if not importDocIsOpen:
+                if filename.lower().endswith(".fcstd"):
+                    App.openDocument(filename)
+                    App.setActiveDocument(self.doc.Name)
+                    self.buildPartList()
+        return
+
+    def onItemClicked(self, item):
+        for selected in self.form.partList.selectedIndexes():
+            selectedPart = self.allParts[selected.row()]
+        if not selectedPart:
+            return
+
+        if self.partMoving:
+            self.endMove()
+
+        # check that the current document had been saved or that it's the same document as that of the selected part
+        if not self.doc.FileName != "" and not self.doc == selectedPart.Document:
+            print(
+                "The current document must be saved before inserting an external part"
+            )
+            return
+
+        self.createdLink = self.assembly.newObject("App::Link", selectedPart.Name)
+        self.createdLink.LinkedObject = selectedPart
+        self.createdLink.Placement.Base = self.getTranslationVec(selectedPart)
+        self.createdLink.recompute()
+
+        self.numberOfAddedParts += 1
+
+        # highlight the link
+        Gui.Selection.clearSelection()
+        Gui.Selection.addSelection(
+            self.doc.Name, self.assembly.Name, self.createdLink.Name + "."
+        )
+
+        # Start moving the part if user brings mouse on view
+        self.initMove()
+
+    def initMove(self):
+        self.callbackMove = self.view.addEventCallback(
+            "SoLocation2Event", self.moveMouse
+        )
+        self.callbackClick = self.view.addEventCallback(
+            "SoMouseButtonEvent", self.clickMouse
+        )
+        self.callbackKey = self.view.addEventCallback(
+            "SoKeyboardEvent", self.KeyboardEvent
+        )
+        self.partMoving = True
+
+        # Selection filter to avoid selecting the part while it's moving
+        # filter = Gui.Selection.Filter('SELECT ???')
+        # Gui.Selection.addSelectionGate(filter)
+
+    def endMove(self):
+        self.view.removeEventCallback("SoLocation2Event", self.callbackMove)
+        self.view.removeEventCallback("SoMouseButtonEvent", self.callbackClick)
+        self.view.removeEventCallback("SoKeyboardEvent", self.callbackKey)
+        self.partMoving = False
+        self.doc.recompute()
+        # Gui.Selection.removeSelectionGate()
+
+    def moveMouse(self, info):
+        newPos = self.view.getPoint(*info["Position"])
+        self.createdLink.Placement.Base = newPos
+
+    def clickMouse(self, info):
+        if info["Button"] == "BUTTON1" and info["State"] == "DOWN":
+            if info["ShiftDown"]:
+                # Create a new link and moves this one now
+                currentPos = self.createdLink.Placement.Base
+                selectedPart = self.createdLink.LinkedObject
+                self.createdLink = self.assembly.newObject(
+                    "App::Link", selectedPart.Name
+                )
+                self.createdLink.LinkedObject = selectedPart
+                self.createdLink.Placement.Base = currentPos
+            else:
+                self.endMove()
+
+    # 3D view keyboard handler
+    def KeyboardEvent(self, info):
+        if info["State"] == "UP" and info["Key"] == "ESCAPE":
+            self.endMove()
+            self.doc.removeObject(self.createdLink.Name)
+
+    # Taskbox keyboard event handler
+    def eventFilter(self, watched, event):
+        if watched == self.form and event.type() == QtCore.QEvent.KeyPress:
+            if event.key() == QtCore.Qt.Key_Escape and self.partMoving:
+                self.endMove()
+                self.doc.removeObject(self.createdLink.Name)
+                return True  # Consume the event
+        return super().eventFilter(watched, event)
+
+    def getTranslationVec(self, part):
+        bb = part.Shape.BoundBox
+        if bb:
+            self.translation += (bb.XMax + bb.YMax + bb.ZMax) * 0.15
+        else:
+            self.translation += 10
+        return App.Vector(self.translation, self.translation, self.translation)
+
+
+if App.GuiUp:
+    Gui.addCommand("Assembly_CreateAssembly", CommandCreateAssembly())
+    Gui.addCommand("Assembly_InsertLink", CommandInsertLink())

src/Mod/Assembly/Gui/CMakeLists.txt

@@ -0,0 +1,52 @@
+include_directories(
+    ${CMAKE_BINARY_DIR}
+    ${CMAKE_CURRENT_BINARY_DIR}
+)
+
+set(AssemblyGui_LIBS
+    FreeCADGui
+)
+
+PYSIDE_WRAP_RC(Assembly_QRC_SRCS Resources/Assembly.qrc)
+
+set (Assembly_TR_QRC ${CMAKE_CURRENT_BINARY_DIR}/Resources/Assembly_translation.qrc)
+qt_find_and_add_translation(QM_SRCS "Resources/translations/*_*.ts"
+    ${CMAKE_CURRENT_BINARY_DIR}/Resources/translations)
+qt_create_resource_file(${Assembly_TR_QRC} ${QM_SRCS})
+qt_add_resources(AssemblyResource_SRCS Resources/Assembly.qrc ${Assembly_TR_QRC})
+
+SOURCE_GROUP("Resources" FILES ${AssemblyResource_SRCS})
+
+
+SET(AssemblyGui_SRCS_Module
+    ${Assembly_QRC_SRCS}
+)
+
+SOURCE_GROUP("Module" FILES ${AssemblyGui_SRCS_Module})
+
+
+SET(AssemblyGui_SRCS
+    ${AssemblyResource_SRCS}
+    ${AssemblyGui_UIC_HDRS}
+    ${AssemblyGui_SRCS_Module}
+)
+
+
+SET(AssemblyGuiIcon_SVG
+    Resources/icons/AssemblyWorkbench.svg
+)
+
+add_library(AssemblyGui SHARED ${AssemblyGui_SRCS} ${AssemblyGuiIcon_SVG})
+target_link_libraries(AssemblyGui ${AssemblyGui_LIBS})
+
+SET_BIN_DIR(AssemblyGui AssemblyGui /Mod/Assembly)
+SET_PYTHON_PREFIX_SUFFIX(AssemblyGui)
+
+fc_copy_sources(AssemblyGui "${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_DATADIR}/Mod/Assembly" ${AssemblyGuiIcon_SVG})
+fc_target_copy_resource(AssemblyGui
+        ${CMAKE_CURRENT_BINARY_DIR}
+        ${CMAKE_BINARY_DIR}/Mod/Assembly
+        Assembly_rc.py)
+
+INSTALL(TARGETS AssemblyGui DESTINATION ${CMAKE_INSTALL_LIBDIR})
+INSTALL(FILES ${AssemblyGuiIcon_SVG} DESTINATION "${CMAKE_INSTALL_DATADIR}/Mod/Assembly/Resources/icons")

src/Mod/Assembly/Gui/Resources/Assembly.qrc

@@ -0,0 +1,8 @@
+<RCC>
+    <qresource>
+        <file>icons/Assembly_InsertLink.svg</file>
+        <file>icons/preferences-assembly.svg</file>
+        <file>panels/TaskAssemblyInsertLink.ui</file>
+        <file>preferences/Assembly.ui</file>
+    </qresource>
+</RCC>

src/Mod/Assembly/Gui/Resources/icons/AssemblyWorkbench.svg

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+<svg
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+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
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+        <dc:contributor>
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+       style="fill:url(#linearGradient922);fill-opacity:1;stroke:#172a04;stroke-width:2;stroke-linejoin:round"
+       id="path916"
+       d="M -17,40 V 26 l 7.9726,-6.7138 0.02739,13.714 z" />
+    <path
+       d="m -15,36 v -9 l 4,-3.5 v 9 z"
+       id="path50"
+       inkscape:connector-curvature="0"
+       style="fill:none;stroke:#fce94f;stroke-width:2;stroke-opacity:1" />
+    <path
+       d="m -29.049,33.746 0.08695,-9.9796 9.9568,3.5229 -0.02105,9.9613 z"
+       id="path52"
+       inkscape:connector-curvature="0"
+       style="fill:none;stroke:#fce94f;stroke-width:2;stroke-opacity:1" />
+  </g>
+</svg>

src/Mod/Assembly/Gui/Resources/panels/TaskAssemblyInsertLink.ui

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>TaskAssemblyInsertLink</class>
+ <widget class="QWidget" name="TaskAssemblyInsertLink">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>376</width>
+    <height>387</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Insert Link</string>
+  </property>
+  <layout class="QGridLayout" name="gridLayout">
+   <item row="0" column="0">
+    <widget class="QLineEdit" name="filterPartList">
+     <property name="placeholderText">
+      <string>Search parts...</string>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="0">
+    <widget class="QListWidget" name="partList"/>
+   </item>
+   <item row="2" column="0">
+    <layout class="QHBoxLayout" name="hLayout">
+     <item>
+      <widget class="QLabel" name="label1">
+       <property name="text">
+        <string>Don't find your part? </string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="openFileButton">
+       <property name="text">
+        <string>Open file</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

src/Mod/Assembly/Gui/Resources/preferences/Assembly.ui

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>AssemblyGui::DlgSettingsAssembly</class>
+ <widget class="QWidget" name="AssemblyGui::DlgSettingsAssembly">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>487</width>
+    <height>691</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>General</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout_3">
+   <item>
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>217</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

src/Mod/Assembly/Init.py

@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+# /****************************************************************************
+#                                                                           *
+#    Copyright (c) 2023 Ondsel <development@ondsel.com>                     *
+#                                                                           *
+#    This file is part of FreeCAD.                                          *
+#                                                                           *
+#    FreeCAD is free software: you can redistribute it and/or modify it     *
+#    under the terms of the GNU Lesser General Public License as            *
+#    published by the Free Software Foundation, either version 2.1 of the   *
+#    License, or (at your option) any later version.                        *
+#                                                                           *
+#    FreeCAD is distributed in the hope that it will be useful, but         *
+#    WITHOUT ANY WARRANTY; without even the implied warranty of             *
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU       *
+#    Lesser General Public License for more details.                        *
+#                                                                           *
+#    You should have received a copy of the GNU Lesser General Public       *
+#    License along with FreeCAD. If not, see                                *
+#    <https://www.gnu.org/licenses/>.                                       *
+#                                                                           *
+# ***************************************************************************/
+
+# Get the Parameter Group of this module
+ParGrp = App.ParamGet("System parameter:Modules").GetGroup("Assembly")
+
+# Set the needed information
+ParGrp.SetString("HelpIndex", "Assembly/Help/index.html")
+ParGrp.SetString("WorkBenchName", "Assembly")
+ParGrp.SetString("WorkBenchModule", "AssemblyWorkbench.py")
+
+FreeCAD.__unit_test__ += ["TestAssemblyWorkbench"]
+
+# This adds a custom import type to the FreeCAD import dialog.
+# The correct format for assembly interoperability is a research topic. ASMT is a placeholder.
+FreeCAD.addImportType("Assembly Format (*.asmt)", "AssemblyImport")
+# FreeCAD.addExportType()

src/Mod/Assembly/InitGui.py

@@ -0,0 +1,104 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+# /****************************************************************************
+#                                                                           *
+#    Copyright (c) 2023 Ondsel <development@ondsel.com>                     *
+#                                                                           *
+#    This file is part of FreeCAD.                                          *
+#                                                                           *
+#    FreeCAD is free software: you can redistribute it and/or modify it     *
+#    under the terms of the GNU Lesser General Public License as            *
+#    published by the Free Software Foundation, either version 2.1 of the   *
+#    License, or (at your option) any later version.                        *
+#                                                                           *
+#    FreeCAD is distributed in the hope that it will be useful, but         *
+#    WITHOUT ANY WARRANTY; without even the implied warranty of             *
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU       *
+#    Lesser General Public License for more details.                        *
+#                                                                           *
+#    You should have received a copy of the GNU Lesser General Public       *
+#    License along with FreeCAD. If not, see                                *
+#    <https://www.gnu.org/licenses/>.                                       *
+#                                                                           *
+# ***************************************************************************/
+
+import Assembly_rc
+
+
+class AssemblyCommandGroup:
+    def __init__(self, cmdlist, menu, tooltip=None):
+        self.cmdlist = cmdlist
+        self.menu = menu
+        if tooltip is None:
+            self.tooltip = menu
+        else:
+            self.tooltip = tooltip
+
+    def GetCommands(self):
+        return tuple(self.cmdlist)
+
+    def GetResources(self):
+        return {"MenuText": self.menu, "ToolTip": self.tooltip}
+
+    def IsActive(self):
+        if FreeCAD.ActiveDocument is not None:
+            return True
+        return False
+
+
+class AssemblyWorkbench(Workbench):
+    "Assembly workbench"
+
+    def __init__(self):
+        print("Loading Assembly workbench...")
+        self.__class__.Icon = (
+            FreeCAD.getResourceDir()
+            + "Mod/Assembly/Resources/icons/AssemblyWorkbench.svg"
+        )
+        self.__class__.MenuText = "Assembly"
+        self.__class__.ToolTip = "Assembly workbench"
+
+    def Initialize(self):
+        print("Initializing Assembly workbench...")
+        global AssemblyCommandGroup
+
+        translate = FreeCAD.Qt.translate
+
+        # load the builtin modules
+        from PySide import QtCore, QtGui
+        from PySide.QtCore import QT_TRANSLATE_NOOP
+        import Commands
+        from Preferences import PreferencesPage
+
+        # from Preferences import preferences
+
+        FreeCADGui.addLanguagePath(":/translations")
+        FreeCADGui.addIconPath(":/icons")
+
+        FreeCADGui.addPreferencePage(
+            PreferencesPage, QT_TRANSLATE_NOOP("QObject", "Assembly")
+        )
+
+        # build commands list
+        cmdlist = ["Assembly_CreateAssembly", "Assembly_InsertLink"]
+
+        self.appendToolbar(QT_TRANSLATE_NOOP("Workbench", "Assembly"), cmdlist)
+
+        self.appendMenu(
+            [QT_TRANSLATE_NOOP("Workbench", "&Assembly")],
+            cmdlist + ["Separator"],
+        )
+
+        print("Assembly workbench loaded")
+
+    def Activated(self):
+        # update the translation engine
+        FreeCADGui.updateLocale()
+
+    def Deactivated(self):
+        pass
+
+    def ContextMenu(self, recipient):
+        pass
+
+
+Gui.addWorkbench(AssemblyWorkbench())

src/Mod/Assembly/Preferences.py

@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+# /****************************************************************************
+#                                                                           *
+#    Copyright (c) 2023 Ondsel <development@ondsel.com>                     *
+#                                                                           *
+#    This file is part of FreeCAD.                                          *
+#                                                                           *
+#    FreeCAD is free software: you can redistribute it and/or modify it     *
+#    under the terms of the GNU Lesser General Public License as            *
+#    published by the Free Software Foundation, either version 2.1 of the   *
+#    License, or (at your option) any later version.                        *
+#                                                                           *
+#    FreeCAD is distributed in the hope that it will be useful, but         *
+#    WITHOUT ANY WARRANTY; without even the implied warranty of             *
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU       *
+#    Lesser General Public License for more details.                        *
+#                                                                           *
+#    You should have received a copy of the GNU Lesser General Public       *
+#    License along with FreeCAD. If not, see                                *
+#    <https://www.gnu.org/licenses/>.                                       *
+#                                                                           *
+# ***************************************************************************/
+
+import FreeCAD
+import FreeCADGui
+
+
+def preferences():
+    return FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Assembly")
+
+
+class PreferencesPage:
+    def __init__(self, parent=None):
+        self.form = FreeCADGui.PySideUic.loadUi(":preferences/Assembly.ui")
+
+    def saveSettings(self):
+        pass
+
+    def loadSettings(self):
+        pass

src/Mod/Assembly/TestAssemblyWorkbench.py

@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+# /****************************************************************************
+#                                                                           *
+#    Copyright (c) 2023 Ondsel <development@ondsel.com>                     *
+#                                                                           *
+#    This file is part of FreeCAD.                                          *
+#                                                                           *
+#    FreeCAD is free software: you can redistribute it and/or modify it     *
+#    under the terms of the GNU Lesser General Public License as            *
+#    published by the Free Software Foundation, either version 2.1 of the   *
+#    License, or (at your option) any later version.                        *
+#                                                                           *
+#    FreeCAD is distributed in the hope that it will be useful, but         *
+#    WITHOUT ANY WARRANTY; without even the implied warranty of             *
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU       *
+#    Lesser General Public License for more details.                        *
+#                                                                           *
+#    You should have received a copy of the GNU Lesser General Public       *
+#    License along with FreeCAD. If not, see                                *
+#    <https://www.gnu.org/licenses/>.                                       *
+#                                                                           *
+# ***************************************************************************/
+
+import TestApp
+
+from AssemblyTests.TestCore import TestCore
+
+
+# dummy usage to get flake8 and lgtm quiet
+False if TestCore.__name__ else True
+False if TestApp.__name__ else True

src/Mod/Assembly/assembly.dox

@@ -0,0 +1,4 @@
+/** \defgroup ASSEMBLY Assembly
+ *  \ingroup PYTHONWORKBENCHES
+ *  \brief Tools to build assemblies
+ */

src/Mod/CMakeLists.txt

@@ -6,6 +6,10 @@ if(BUILD_ARCH)
   add_subdirectory(Arch)
 endif(BUILD_ARCH)
 
+if(BUILD_ASSEMBLY)
+  add_subdirectory(Assembly)
+endif(BUILD_ASSEMBLY)
+
 if(BUILD_CLOUD)
     add_subdirectory(Cloud)
 endif(BUILD_CLOUD)