armory/blender/arm/props_traits.py

import json
import os
import shutil
import subprocess
from typing import Union
import webbrowser

from bpy.types import NodeTree
import bpy.utils.previews

import arm.make as make
from arm.props_traits_props import *
import arm.proxy as proxy
import arm.ui_icons as ui_icons
import arm.utils
import arm.write_data as write_data

ICON_HAXE = ui_icons.get_id('haxe')
ICON_NODES = 'NODETREE'
ICON_CANVAS = 'NODE_COMPOSITING'
ICON_BUNDLED = ui_icons.get_id('bundle')
ICON_WASM = ui_icons.get_id('wasm')

# Pay attention to the ID number parameter for backward compatibility!
# This is important if the enum is reordered or the string identifier
# is changed as the number is what's stored in the blend file
PROP_TYPES_ENUM = [
    ('Haxe Script', 'Haxe', 'Haxe script', ICON_HAXE, 0),
    ('Logic Nodes', 'Nodes', 'Logic nodes (visual scripting)', ICON_NODES, 4),
    ('UI Canvas', 'UI', 'User interface', ICON_CANVAS, 2),
    ('Bundled Script', 'Bundled', 'Premade script with common functionality', ICON_BUNDLED, 3),
    ('WebAssembly', 'Wasm', 'WebAssembly', ICON_WASM, 1)
]


def trigger_recompile(self, context):
    wrd = bpy.data.worlds['Arm']
    wrd.arm_recompile = True

def update_trait_group(self, context):
    o = context.object if self.is_object else context.scene
    if o == None:
        return
    i = o.arm_traitlist_index
    if i >= 0 and i < len(o.arm_traitlist):
        t = o.arm_traitlist[i]
        if t.type_prop == 'Haxe Script' or t.type_prop == 'Bundled Script':
            t.name = t.class_name_prop
        elif t.type_prop == 'WebAssembly':
            t.name = t.webassembly_prop
        elif t.type_prop == 'UI Canvas':
            t.name = t.canvas_name_prop
        elif t.type_prop == 'Logic Nodes':
            if t.node_tree_prop != None:
                t.name = t.node_tree_prop.name
        # Fetch props
        if t.type_prop == 'Bundled Script' and t.name != '':
            file_path = arm.utils.get_sdk_path() + '/armory/Sources/armory/trait/' + t.name + '.hx'
            if os.path.exists(file_path):
                arm.utils.fetch_script_props(file_path)
                arm.utils.fetch_prop(o)
        # Show trait users as collections
        if self.is_object:
            for col in bpy.data.collections:
                if col.name.startswith('Trait|') and o.name in col.objects:
                    col.objects.unlink(o)
            for t in o.arm_traitlist:
                if 'Trait|' + t.name not in bpy.data.collections:
                    col = bpy.data.collections.new('Trait|' + t.name)
                else:
                    col = bpy.data.collections['Trait|' + t.name]
                try:
                    col.objects.link(o)
                except RuntimeError:
                    # Object is already in that collection. This can
                    # happen when multiple same traits are copied with
                    # bpy.ops.arm.copy_traits_to_active
                    pass

class ArmTraitListItem(bpy.types.PropertyGroup):
    def poll_node_trees(self, tree: NodeTree):
        """Ensure that only logic node trees show up as node traits"""
        return tree.bl_idname == 'ArmLogicTreeType'

    name: StringProperty(name="Name", description="A name for this item", default="")
    enabled_prop: BoolProperty(name="", description="A name for this item", default=True, update=trigger_recompile)
    is_object: BoolProperty(name="", default=True)
    fake_user: BoolProperty(name="Fake User", description="Export this trait even if it is deactivated", default=False)
    type_prop: EnumProperty(name="Type", items=PROP_TYPES_ENUM)
    class_name_prop: StringProperty(name="Class", description="A name for this item", default="", update=update_trait_group)
    canvas_name_prop: StringProperty(name="Canvas", description="A name for this item", default="", update=update_trait_group)
    webassembly_prop: StringProperty(name="Module", description="A name for this item", default="", update=update_trait_group)
    node_tree_prop: PointerProperty(type=NodeTree, update=update_trait_group, poll=poll_node_trees)
    arm_traitpropslist: CollectionProperty(type=ArmTraitPropListItem)
    arm_traitpropslist_index: IntProperty(name="Index for my_list", default=0)
    arm_traitpropswarnings: CollectionProperty(type=ArmTraitPropWarning)

class ARM_UL_TraitList(bpy.types.UIList):
    """List of traits."""
    def draw_item(self, context, layout, data, item, icon, active_data, active_propname, index):
        layout.use_property_split = False

        custom_icon = "NONE"
        custom_icon_value = 0
        if item.type_prop == "Haxe Script":
            custom_icon_value = ui_icons.get_id("haxe")
        elif item.type_prop == "WebAssembly":
            custom_icon_value = ui_icons.get_id("wasm")
        elif item.type_prop == "UI Canvas":
            custom_icon = "NODE_COMPOSITING"
        elif item.type_prop == "Bundled Script":
            custom_icon_value = ui_icons.get_id("bundle")
        elif item.type_prop == "Logic Nodes":
            custom_icon = 'NODETREE'

        if self.layout_type in {'DEFAULT', 'COMPACT'}:
            row = layout.row()
            row.separator(factor=0.1)
            row.prop(item, "enabled_prop")
            # Display " " for props without a name to right-align the
            # fake_user button
            row.label(text=item.name if item.name != "" else " ", icon=custom_icon, icon_value=custom_icon_value)

        elif self.layout_type in {'GRID'}:
            layout.alignment = 'CENTER'
            layout.label(text="", icon=custom_icon, icon_value=custom_icon_value)

        row = layout.row(align=True)
        row.prop(item, "fake_user", text="", icon="FAKE_USER_ON" if item.fake_user else "FAKE_USER_OFF")

class ArmTraitListNewItem(bpy.types.Operator):
    bl_idname = "arm_traitlist.new_item"
    bl_label = "Add Trait"
    bl_description = "Add a new trait item to the list"

    is_object: BoolProperty(name="Is Object Trait", description="Whether this trait belongs to an object or a scene", default=False)
    type_prop: EnumProperty(name="Type", items=PROP_TYPES_ENUM)

    # Show more options when invoked from the operator search menu
    invoked_by_search: BoolProperty(name="", default=True)

    def invoke(self, context, event):
        wm = context.window_manager
        return wm.invoke_props_dialog(self, width=400)

    def draw(self, context):
        layout = self.layout

        if self.invoked_by_search:
            row = layout.row()
            row.prop(self, "is_object")

        row = layout.row()
        row.scale_y = 1.3
        row.prop(self, "type_prop", expand=True)

    def execute(self, context):
        if self.is_object:
            obj = bpy.context.object
        else:
            obj = bpy.context.scene
        trait = obj.arm_traitlist.add()
        trait.is_object = self.is_object
        trait.type_prop = self.type_prop
        obj.arm_traitlist_index = len(obj.arm_traitlist) - 1
        trigger_recompile(None, None)
        return{'FINISHED'}

class ArmTraitListDeleteItem(bpy.types.Operator):
    """Delete the selected item from the list"""
    bl_idname = "arm_traitlist.delete_item"
    bl_label = "Remove Trait"
    bl_options = {'INTERNAL'}

    is_object: BoolProperty(name="", description="A name for this item", default=False)

    @classmethod
    def poll(self, context):
        """ Enable if there's something in the list """
        obj = bpy.context.object
        if obj == None:
            return False
        return len(obj.arm_traitlist) > 0

    def execute(self, context):
        obj = bpy.context.object
        lst = obj.arm_traitlist
        index = obj.arm_traitlist_index

        if len(lst) <= index:
            return{'FINISHED'}

        lst.remove(index)
        update_trait_group(self, context)

        if index > 0:
            index = index - 1

        obj.arm_traitlist_index = index
        return{'FINISHED'}

class ArmTraitListDeleteItemScene(bpy.types.Operator):
    """Delete the selected item from the list"""
    bl_idname = "arm_traitlist.delete_item_scene"
    bl_label = "Deletes an item"
    bl_options = {'INTERNAL'}

    is_object: BoolProperty(name="", description="A name for this item", default=False)

    @classmethod
    def poll(self, context):
        """ Enable if there's something in the list """
        obj = bpy.context.scene
        if obj == None:
            return False
        return len(obj.arm_traitlist) > 0

    def execute(self, context):
        obj = bpy.context.scene
        lst = obj.arm_traitlist
        index = obj.arm_traitlist_index

        if len(lst) <= index:
            return{'FINISHED'}

        lst.remove(index)

        if index > 0:
            index = index - 1

        obj.arm_traitlist_index = index
        return{'FINISHED'}

class ArmTraitListMoveItem(bpy.types.Operator):
    """Move an item in the list"""
    bl_idname = "arm_traitlist.move_item"
    bl_label = "Move an item in the list"
    bl_options = {'INTERNAL'}

    direction: EnumProperty(
                items=(
                    ('UP', 'Up', ""),
                    ('DOWN', 'Down', ""),))

    is_object: BoolProperty(name="", description="A name for this item", default=False)

    def move_index(self):
        # Move index of an item render queue while clamping it
        if self.is_object:
            obj = bpy.context.object
        else:
            obj = bpy.context.scene
        index = obj.arm_traitlist_index
        list_length = len(obj.arm_traitlist) - 1
        new_index = 0

        if self.direction == 'UP':
            new_index = index - 1
        elif self.direction == 'DOWN':
            new_index = index + 1

        new_index = max(0, min(new_index, list_length))
        obj.arm_traitlist.move(index, new_index)
        obj.arm_traitlist_index = new_index

    def execute(self, context):
        if self.is_object:
            obj = bpy.context.object
        else:
            obj = bpy.context.scene
        list = obj.arm_traitlist
        index = obj.arm_traitlist_index

        if self.direction == 'DOWN':
            neighbor = index + 1
            self.move_index()

        elif self.direction == 'UP':
            neighbor = index - 1
            self.move_index()
        else:
            return{'CANCELLED'}
        return{'FINISHED'}

class ArmEditScriptButton(bpy.types.Operator):
    bl_idname = 'arm.edit_script'
    bl_label = 'Edit Script'
    bl_description = 'Edit script in the text editor'
    bl_options = {'INTERNAL'}

    is_object: BoolProperty(name="", description="A name for this item", default=False)

    def execute(self, context):

        arm.utils.check_default_props()

        if not os.path.exists(os.path.join(arm.utils.get_fp(), "khafile.js")):
            print('Generating Krom project for IDE build configuration')
            make.build('krom')

        if self.is_object:
            obj = bpy.context.object
        else:
            obj = bpy.context.scene

        item = obj.arm_traitlist[obj.arm_traitlist_index]
        pkg = arm.utils.safestr(bpy.data.worlds['Arm'].arm_project_package)
        # Replace the haxe package syntax with the os-dependent path syntax for opening
        hx_path = os.path.join(arm.utils.get_fp(), 'Sources', pkg, item.class_name_prop.replace('.', os.sep) + '.hx')
        arm.utils.open_editor(hx_path)
        return{'FINISHED'}

class ArmEditBundledScriptButton(bpy.types.Operator):
    bl_idname = 'arm.edit_bundled_script'
    bl_label = 'Edit Script'
    bl_description = 'Copy script to project and edit in the text editor'
    bl_options = {'INTERNAL'}

    is_object: BoolProperty(name="", description="A name for this item", default=False)

    def execute(self, context):
        if not arm.utils.check_saved(self):
            return {'CANCELLED'}

        if self.is_object:
            obj = bpy.context.object
        else:
            obj = bpy.context.scene
        sdk_path = arm.utils.get_sdk_path()
        project_path = arm.utils.get_fp()
        item = obj.arm_traitlist[obj.arm_traitlist_index]

        pkg = arm.utils.safestr(bpy.data.worlds['Arm'].arm_project_package)
        source_hx_path = os.path.join(sdk_path, 'armory', 'Sources', 'armory', 'trait', item.class_name_prop + '.hx')
        target_dir = os.path.join(project_path, 'Sources', pkg)
        target_hx_path = os.path.join(target_dir, item.class_name_prop + '.hx')

        if not os.path.isfile(target_hx_path):
            if not os.path.exists(target_dir):
                os.makedirs(target_dir)

            # Rewrite package and copy
            with open(source_hx_path, encoding="utf-8") as sf:
                sf.readline()
                with open(target_hx_path, 'w', encoding="utf-8") as tf:
                    tf.write('package ' + pkg + ';\n')
                    shutil.copyfileobj(sf, tf)

            arm.utils.fetch_script_names()

        # From bundled to script
        item.type_prop = 'Haxe Script'

        # Open the trait in the code editor
        bpy.ops.arm.edit_script('EXEC_DEFAULT', is_object=self.is_object)

        return{'FINISHED'}

class ArmoryGenerateNavmeshButton(bpy.types.Operator):
    """Generate navmesh from selected meshes"""
    bl_idname = 'arm.generate_navmesh'
    bl_label = 'Generate Navmesh'

    def execute(self, context):
        obj = context.active_object

        if obj.type != 'MESH':
            return{'CANCELLED'}

        if not arm.utils.check_saved(self):
            return {"CANCELLED"}

        if not arm.utils.check_sdkpath(self):
            return {"CANCELLED"}

        depsgraph = bpy.context.evaluated_depsgraph_get()
        armature = obj.find_armature()
        apply_modifiers = not armature

        obj_eval = obj.evaluated_get(depsgraph) if apply_modifiers else obj
        export_mesh = obj_eval.to_mesh()
        # TODO: build tilecache here
        print("Started visualization generation")
        # For visualization
        nav_full_path = arm.utils.get_fp_build() + '/compiled/Assets/navigation'
        if not os.path.exists(nav_full_path):
            os.makedirs(nav_full_path)

        nav_mesh_name = 'nav_' + obj_eval.data.name
        mesh_path = nav_full_path + '/' + nav_mesh_name + '.obj'

        with open(mesh_path, 'w') as f:
            for v in export_mesh.vertices:
                f.write("v %.4f " % (v.co[0] * obj_eval.scale.x))
                f.write("%.4f " % (v.co[2] * obj_eval.scale.z))
                f.write("%.4f\n" % (v.co[1] * obj_eval.scale.y)) # Flipped
            for p in export_mesh.polygons:
                f.write("f")
                for i in reversed(p.vertices): # Flipped normals
                    f.write(" %d" % (i + 1))
                f.write("\n")

        buildnavjs_path = arm.utils.get_sdk_path() + '/lib/haxerecast/buildnavjs'

        # append config values
        nav_config = {}
        for trait in obj.arm_traitlist:
            # check if trait is navmesh here
            if trait.arm_traitpropslist and trait.class_name_prop == 'NavMesh':
                for prop in trait.arm_traitpropslist: # Append props
                    name = prop.name
                    value = prop.get_value()
                    nav_config[name] = value
        nav_config_json = json.dumps(nav_config)

        args = [arm.utils.get_node_path(), buildnavjs_path, nav_mesh_name, nav_config_json]
        proc = subprocess.Popen(args, cwd=nav_full_path)
        proc.wait()

        navmesh = bpy.ops.import_scene.obj(filepath=mesh_path)
        navmesh = bpy.context.selected_objects[0]

        navmesh.name = nav_mesh_name
        navmesh.rotation_euler = (0, 0, 0)
        navmesh.location = (obj.location.x, obj.location.y, obj.location.z)
        navmesh.arm_export = False

        bpy.context.view_layer.objects.active = navmesh
        bpy.ops.object.editmode_toggle()
        bpy.ops.mesh.select_all(action='SELECT')
        bpy.ops.mesh.remove_doubles()
        bpy.ops.object.editmode_toggle()

        obj_eval.to_mesh_clear()

        print("Finished visualization generation")

        return{'FINISHED'}

class ArmEditCanvasButton(bpy.types.Operator):
    bl_idname = 'arm.edit_canvas'
    bl_label = 'Edit Canvas'
    bl_description = 'Edit UI Canvas'
    bl_options = {'INTERNAL'}

    is_object: BoolProperty(name="", description="A name for this item", default=False)

    def execute(self, context):
        if self.is_object:
            obj = bpy.context.object
        else:
            obj = bpy.context.scene
        project_path = arm.utils.get_fp()
        item = obj.arm_traitlist[obj.arm_traitlist_index]
        canvas_path = project_path + '/Bundled/canvas/' + item.canvas_name_prop + '.json'
        sdk_path = arm.utils.get_sdk_path()
        ext = 'd3d11' if arm.utils.get_os() == 'win' else 'opengl'
        armory2d_path = sdk_path + '/lib/armory_tools/armory2d/' + ext
        krom_location, krom_path = arm.utils.krom_paths()
        os.chdir(krom_location)
        cpath = canvas_path.replace('\\', '/')
        uiscale = str(arm.utils.get_ui_scale())
        cmd = [krom_path, armory2d_path, armory2d_path, cpath, uiscale]
        if arm.utils.get_os() == 'win':
            cmd.append('--consolepid')
            cmd.append(str(os.getpid()))
        subprocess.Popen(cmd)
        return{'FINISHED'}

class ArmNewScriptDialog(bpy.types.Operator):
    bl_idname = "arm.new_script"
    bl_label = "New Script"
    bl_description = 'Create a blank script'
    bl_options = {'INTERNAL'}

    is_object: BoolProperty(name="Object trait", description="Is this an object trait?", default=False)
    class_name: StringProperty(name="Name", description="The class name")

    def execute(self, context):
        if self.is_object:
            obj = bpy.context.object
        else:
            obj = bpy.context.scene
        self.class_name = self.class_name.replace(' ', '')
        write_data.write_traithx(self.class_name)
        arm.utils.fetch_script_names()
        item = obj.arm_traitlist[obj.arm_traitlist_index]
        item.class_name_prop = self.class_name
        return {'FINISHED'}

    def invoke(self, context, event):
        if not arm.utils.check_saved(self):
            return {'CANCELLED'}
        self.class_name = 'MyTrait'
        return context.window_manager.invoke_props_dialog(self)

    def draw(self, context):
        self.layout.prop(self, "class_name")

class ArmNewTreeNodeDialog(bpy.types.Operator):
    bl_idname = "arm.new_treenode"
    bl_label = "New Node Tree"
    bl_description = 'Create a blank Node Tree'
    bl_options = {'INTERNAL'}

    is_object: BoolProperty(name="Object Node Tree", description="Is this an object Node Tree?", default=False)
    class_name: StringProperty(name="Name", description="The Node Tree name")

    def execute(self, context):
        if self.is_object:
            obj = context.object
        else:
            obj = context.scene
        self.class_name = self.class_name.replace(' ', '')
        # Create new node tree
        node_tree = bpy.data.node_groups.new(self.class_name, 'ArmLogicTreeType')
        # Set new node tree
        item = obj.arm_traitlist[obj.arm_traitlist_index]
        if item.node_tree_prop is None:
            item.node_tree_prop = node_tree
        return {'FINISHED'}

    def invoke(self, context, event):
        if not arm.utils.check_saved(self):
            return {'CANCELLED'}
        self.class_name = 'MyNodeTree'
        return context.window_manager.invoke_props_dialog(self)

    def draw(self, context):
        self.layout.prop(self, "class_name")

class ArmEditTreeNodeDialog(bpy.types.Operator):
    bl_idname = "arm.edit_treenode"
    bl_label = "Edit Node Tree"
    bl_description = 'Edit this Node Tree in the Logic Node Editor'
    bl_options = {'INTERNAL'}

    is_object: BoolProperty(name="Object Node Tree", description="Is this an object Node Tree?", default=False)

    def execute(self, context):
        if self.is_object:
            obj = context.object
        else:
            obj = context.scene
        # Check len node tree list
        if len(obj.arm_traitlist) > 0:
            item = obj.arm_traitlist[obj.arm_traitlist_index]
            # Loop for all spaces
            context_screen = context.screen
            if item is not None and context_screen is not None:
                areas = context_screen.areas
                for area in areas:
                    for space in area.spaces:
                        if space.type == 'NODE_EDITOR':
                            if space.tree_type == 'ArmLogicTreeType':
                                # Set Node Tree
                                space.node_tree = item.node_tree_prop
        return {'FINISHED'}

class ArmGetTreeNodeDialog(bpy.types.Operator):
    bl_idname = "arm.get_treenode"
    bl_label = "From Node Editor"
    bl_description = 'Use the Node Tree from the opened Node Tree Editor for this trait'
    bl_options = {'INTERNAL'}

    is_object: BoolProperty(name="Object Node Tree", description="Is this an object Node Tree?", default=False)

    def execute(self, context):
        if self.is_object:
            obj = context.object
        else:
            obj = context.scene
        # Check len node tree list
        if len(obj.arm_traitlist) > 0:
            item = obj.arm_traitlist[obj.arm_traitlist_index]
            # Loop for all spaces
            context_screen = context.screen
            if item is not None and context_screen is not None:
                areas = context_screen.areas
                for area in areas:
                    for space in area.spaces:
                        if space.type == 'NODE_EDITOR':
                            if space.tree_type == 'ArmLogicTreeType' and space.node_tree is not None:
                                # Set Node Tree in Item
                                item.node_tree_prop = space.node_tree
        return {'FINISHED'}

class ArmNewCanvasDialog(bpy.types.Operator):
    bl_idname = "arm.new_canvas"
    bl_label = "New Canvas"
    bl_description = 'Create a blank canvas'
    bl_options = {'INTERNAL'}

    is_object: BoolProperty(name="Object trait", description="Is this an object trait?", default=False)
    canvas_name: StringProperty(name="Name", description="The canvas name")

    def execute(self, context):
        if self.is_object:
            obj = bpy.context.object
        else:
            obj = bpy.context.scene
        self.canvas_name = self.canvas_name.replace(' ', '')
        write_data.write_canvasjson(self.canvas_name)
        arm.utils.fetch_script_names()
        item = obj.arm_traitlist[obj.arm_traitlist_index]
        item.canvas_name_prop = self.canvas_name
        return {'FINISHED'}

    def invoke(self, context, event):
        if not arm.utils.check_saved(self):
            return {'CANCELLED'}
        self.canvas_name = 'MyCanvas'
        return context.window_manager.invoke_props_dialog(self)

    def draw(self, context):
        self.layout.prop(self, "canvas_name")

class ArmNewWasmButton(bpy.types.Operator):
    """Create new WebAssembly module"""
    bl_idname = 'arm.new_wasm'
    bl_label = 'New Module'

    def execute(self, context):
        webbrowser.open('https://webassembly.studio/')
        return{'FINISHED'}

class ArmRefreshScriptsButton(bpy.types.Operator):
    """Fetch all script names"""
    bl_idname = 'arm.refresh_scripts'
    bl_label = 'Refresh Traits'

    def execute(self, context):
        arm.utils.fetch_bundled_script_names()
        arm.utils.fetch_bundled_trait_props()
        arm.utils.fetch_script_names()
        arm.utils.fetch_trait_props()
        arm.utils.fetch_wasm_names()
        return{'FINISHED'}

class ArmRefreshCanvasListButton(bpy.types.Operator):
    """Fetch all canvas names"""
    bl_idname = 'arm.refresh_canvas_list'
    bl_label = 'Refresh Canvas Traits'

    def execute(self, context):
        arm.utils.fetch_script_names()
        return{'FINISHED'}

class ARM_PT_TraitPanel(bpy.types.Panel):
    bl_label = "Armory Traits"
    bl_space_type = "PROPERTIES"
    bl_region_type = "WINDOW"
    bl_context = "object"

    def draw(self, context):
        obj = bpy.context.object
        draw_traits_panel(self.layout, obj, is_object=True)

class ARM_PT_SceneTraitPanel(bpy.types.Panel):
    bl_label = "Armory Scene Traits"
    bl_space_type = "PROPERTIES"
    bl_region_type = "WINDOW"
    bl_context = "scene"

    def draw(self, context):
        obj = bpy.context.scene
        draw_traits_panel(self.layout, obj, is_object=False)

class ARM_OT_CopyTraitsFromActive(bpy.types.Operator):
    bl_label = 'Copy Traits from Active Object'
    bl_idname = 'arm.copy_traits_to_active'
    bl_description = 'Copies the traits of the active object to all other selected objects'

    overwrite: BoolProperty(name="Overwrite", default=True)

    @classmethod
    def poll(cls, context):
        return context.active_object is not None and len(context.selected_objects) > 1

    def draw_message_box(self, context):
        layout = self.layout
        layout = layout.column(align=True)
        layout.alignment = 'EXPAND'

        layout.label(text='Warning: At least one target object already has', icon='ERROR')
        layout.label(text='traits assigned to it!', icon='BLANK1')
        layout.separator()
        layout.label(text='Do you want to overwrite the already existing traits', icon='BLANK1')
        layout.label(text='or append to them?', icon='BLANK1')
        layout.separator()

        row = layout.row(align=True)
        row.active_default = True
        row.operator('arm.copy_traits_to_active', text='Overwrite').overwrite = True
        row.active_default = False
        row.operator('arm.copy_traits_to_active', text='Append').overwrite = False
        row.operator('arm.discard_popup', text='Cancel')

    def execute(self, context):
        source_obj = bpy.context.active_object

        for target_obj in bpy.context.selected_objects:
            if source_obj == target_obj:
                continue

            # Offset for trait iteration when appending traits
            offset = 0
            if not self.overwrite:
                offset = len(target_obj.arm_traitlist)

            # Make use of proxy functions here
            proxy.sync_collection(
                source_obj.arm_traitlist, target_obj.arm_traitlist, clear_dst=self.overwrite)

            for i in range(len(source_obj.arm_traitlist)):
                proxy.sync_collection(
                    source_obj.arm_traitlist[i].arm_traitpropslist,
                    target_obj.arm_traitlist[i + offset].arm_traitpropslist
                )

        return {"FINISHED"}

    def invoke(self, context, event):
        show_dialog = False

        # Test if there is a target object which has traits that would
        # get overwritten
        source_obj = bpy.context.active_object
        for target_object in bpy.context.selected_objects:
            if source_obj == target_object:
                continue
            else:
                if target_object.arm_traitlist:
                    show_dialog = True

        if show_dialog:
            context.window_manager.popover(self.__class__.draw_message_box, ui_units_x=16)
        else:
            bpy.ops.arm.copy_traits_to_active()

        return {'INTERFACE'}


def draw_traits_panel(layout: bpy.types.UILayout, obj: Union[bpy.types.Object, bpy.types.Scene],
                      is_object: bool) -> None:
    layout.use_property_split = True
    layout.use_property_decorate = False

    # Make the list bigger when there are a few traits
    num_rows = 2
    if len(obj.arm_traitlist) > 1:
        num_rows = 4

    row = layout.row()
    row.template_list("ARM_UL_TraitList", "The_List", obj, "arm_traitlist", obj, "arm_traitlist_index", rows=num_rows)

    col = row.column(align=True)
    op = col.operator("arm_traitlist.new_item", icon='ADD', text="")
    op.invoked_by_search = False
    op.is_object = is_object
    if is_object:
        op = col.operator("arm_traitlist.delete_item", icon='REMOVE', text="")
    else:
        op = col.operator("arm_traitlist.delete_item_scene", icon='REMOVE', text="")
    op.is_object = is_object

    if len(obj.arm_traitlist) > 1:
        col.separator()
        op = col.operator("arm_traitlist.move_item", icon='TRIA_UP', text="")
        op.direction = 'UP'
        op.is_object = is_object
        op = col.operator("arm_traitlist.move_item", icon='TRIA_DOWN', text="")
        op.direction = 'DOWN'
        op.is_object = is_object

    # Draw trait specific content
    if obj.arm_traitlist_index >= 0 and len(obj.arm_traitlist) > 0:
        item = obj.arm_traitlist[obj.arm_traitlist_index]

        row = layout.row(align=True)
        row.alignment = 'EXPAND'
        row.scale_y = 1.2

        if item.type_prop == 'Haxe Script' or item.type_prop == 'Bundled Script':
            if item.type_prop == 'Haxe Script':
                row.operator("arm.new_script", icon="FILE_NEW").is_object = is_object
                column = row.column(align=True)
                column.enabled = item.class_name_prop != ''
                column.operator("arm.edit_script", icon="FILE_SCRIPT").is_object = is_object

            # Bundled scripts
            else:
                if item.class_name_prop == 'NavMesh':
                    row.operator("arm.generate_navmesh", icon="UV_VERTEXSEL")
                else:
                    row.operator("arm.edit_bundled_script", icon="FILE_SCRIPT").is_object = is_object

            row.operator("arm.refresh_scripts", text="Refresh", icon="FILE_REFRESH")

            # Default props
            item.name = item.class_name_prop
            row = layout.row()
            if item.type_prop == 'Haxe Script':
                row.prop_search(item, "class_name_prop", bpy.data.worlds['Arm'], "arm_scripts_list", text="Class")
            else:
                # Bundled scripts not yet fetched
                if not bpy.data.worlds['Arm'].arm_bundled_scripts_list:
                    arm.utils.fetch_bundled_script_names()
                row.prop_search(item, "class_name_prop", bpy.data.worlds['Arm'], "arm_bundled_scripts_list", text="Class")

        elif item.type_prop == 'WebAssembly':
            item.name = item.webassembly_prop

            row.operator("arm.new_wasm", icon="FILE_NEW")
            row.operator("arm.refresh_scripts", text="Refresh", icon="FILE_REFRESH")

            row = layout.row()
            row.prop_search(item, "webassembly_prop", bpy.data.worlds['Arm'], "arm_wasm_list", text="Module")

        elif item.type_prop == 'UI Canvas':
            item.name = item.canvas_name_prop

            row.operator("arm.new_canvas", icon="FILE_NEW").is_object = is_object
            column = row.column(align=True)
            column.enabled = item.canvas_name_prop != ''
            column.operator("arm.edit_canvas", icon="NODE_COMPOSITING").is_object = is_object
            row.operator("arm.refresh_canvas_list", text="Refresh", icon="FILE_REFRESH")

            row = layout.row()
            row.prop_search(item, "canvas_name_prop", bpy.data.worlds['Arm'], "arm_canvas_list", text="Canvas")

        elif item.type_prop == 'Logic Nodes':
            # Check if there is at least one active Logic Node Editor
            is_editor_active = False
            if bpy.context.screen is not None:
                areas = bpy.context.screen.areas
                for area in areas:
                    for space in area.spaces:
                        if space.type == 'NODE_EDITOR':
                            if space.tree_type == 'ArmLogicTreeType' and space.node_tree is not None:
                                is_editor_active = True
                                break
                        if is_editor_active:
                            break

            row.operator("arm.new_treenode", text="New Tree", icon="ADD").is_object = is_object

            column = row.column(align=True)
            column.enabled = is_editor_active and item.node_tree_prop is not None
            column.operator("arm.edit_treenode", text="Edit Tree", icon="NODETREE").is_object = is_object

            column = row.column(align=True)
            column.enabled = is_editor_active and item is not None
            column.operator("arm.get_treenode", text="From Editor", icon="IMPORT").is_object = is_object

            row = layout.row()
            row.prop_search(item, "node_tree_prop", bpy.data, "node_groups", text="Tree")

        # =====================
        # Draw trait properties
        if item.type_prop == 'Haxe Script' or item.type_prop == 'Bundled Script':

            if item.arm_traitpropslist:
                layout.label(text="Trait Properties:")
                if item.arm_traitpropswarnings:
                    box = layout.box()
                    box.label(text=f"Warnings ({len(item.arm_traitpropswarnings)}):", icon="ERROR")
                    col = box.column(align=True)

                    for warning in item.arm_traitpropswarnings:
                        col.label(text=f'"{warning.propName}": {warning.warning}')

                propsrows = max(len(item.arm_traitpropslist), 6)
                row = layout.row()
                row.template_list("ARM_UL_PropList", "The_List", item, "arm_traitpropslist", item, "arm_traitpropslist_index", rows=propsrows)


def register():
    bpy.utils.register_class(ArmTraitListItem)
    bpy.utils.register_class(ARM_UL_TraitList)
    bpy.utils.register_class(ArmTraitListNewItem)
    bpy.utils.register_class(ArmTraitListDeleteItem)
    bpy.utils.register_class(ArmTraitListDeleteItemScene)
    bpy.utils.register_class(ArmTraitListMoveItem)
    bpy.utils.register_class(ArmEditScriptButton)
    bpy.utils.register_class(ArmEditBundledScriptButton)
    bpy.utils.register_class(ArmoryGenerateNavmeshButton)
    bpy.utils.register_class(ArmEditCanvasButton)
    bpy.utils.register_class(ArmNewScriptDialog)
    bpy.utils.register_class(ArmNewTreeNodeDialog)
    bpy.utils.register_class(ArmEditTreeNodeDialog)
    bpy.utils.register_class(ArmGetTreeNodeDialog)
    bpy.utils.register_class(ArmNewCanvasDialog)
    bpy.utils.register_class(ArmNewWasmButton)
    bpy.utils.register_class(ArmRefreshScriptsButton)
    bpy.utils.register_class(ArmRefreshCanvasListButton)
    bpy.utils.register_class(ARM_PT_TraitPanel)
    bpy.utils.register_class(ARM_PT_SceneTraitPanel)
    bpy.utils.register_class(ARM_OT_CopyTraitsFromActive)

    bpy.types.Object.arm_traitlist = CollectionProperty(type=ArmTraitListItem)
    bpy.types.Object.arm_traitlist_index = IntProperty(name="Index for arm_traitlist", default=0)
    bpy.types.Scene.arm_traitlist = CollectionProperty(type=ArmTraitListItem)
    bpy.types.Scene.arm_traitlist_index = IntProperty(name="Index for arm_traitlist", default=0)


def unregister():
    bpy.utils.unregister_class(ARM_OT_CopyTraitsFromActive)
    bpy.utils.unregister_class(ArmTraitListItem)
    bpy.utils.unregister_class(ARM_UL_TraitList)
    bpy.utils.unregister_class(ArmTraitListNewItem)
    bpy.utils.unregister_class(ArmTraitListDeleteItem)
    bpy.utils.unregister_class(ArmTraitListDeleteItemScene)
    bpy.utils.unregister_class(ArmTraitListMoveItem)
    bpy.utils.unregister_class(ArmEditScriptButton)
    bpy.utils.unregister_class(ArmEditBundledScriptButton)
    bpy.utils.unregister_class(ArmoryGenerateNavmeshButton)
    bpy.utils.unregister_class(ArmEditCanvasButton)
    bpy.utils.unregister_class(ArmNewScriptDialog)
    bpy.utils.unregister_class(ArmGetTreeNodeDialog)
    bpy.utils.unregister_class(ArmEditTreeNodeDialog)
    bpy.utils.unregister_class(ArmNewTreeNodeDialog)
    bpy.utils.unregister_class(ArmNewCanvasDialog)
    bpy.utils.unregister_class(ArmNewWasmButton)
    bpy.utils.unregister_class(ArmRefreshScriptsButton)
    bpy.utils.unregister_class(ArmRefreshCanvasListButton)
    bpy.utils.unregister_class(ARM_PT_TraitPanel)
    bpy.utils.unregister_class(ARM_PT_SceneTraitPanel)