#26199 Drag&Drop of text in trees and tables causes NPE

enhancement

critical

#23472

In-app configured drag and drop with pre-target validation

#25424

Meta-Model: Generic navigation to container: TLObject.tContainer()

#25542

Supplement tables with calculated columns

#25646

In-app transactions with user input

#25647

Multiple relationships between components

#25704

Layout editor: enable in-app configuration of tile cockpits

#25863

Layout Editor: Selection Component

#26004

Tables with dynamic columns

#26229

Introspection Layout Editor

major

#25634

Creation of elements of polymorphic compositions in a form table

#25787

TL Script Task

#25841

Option provider: access to the context of objects being created

#25872

Create test cases in-app

#25921

State-dependent executability of commands

#25923

Better heuristics for English model element names / automatic translation

#25925

"Real" overlay as deployment configuration

#26000

Display type options for polymorphic configurations in EditorFactory as drop-downs

#26011

TL script: Command to produce log entry

#26033

Fill references about tree selection

#26063

Embed Youtube videos in tl-doc

#26066

Tree tables with dynamic columns

#26067

Status-dependent object icons via annotation

#26068

Context-dependent number ranges via annotation

#26080

TL script: $obj.set($ref, $value) with dynamic reference

#26096

Drag and drop scripting in views that have been configured in-app

#26097

Automatic application restart from the development environment

#26117

SecurityProviders in tables and grids

#26127

IDE startup: Automatic redirect to the right context path

#26141

Define buttons on selection components

#26158

Transaction with input: reset form, easy access to context in option providers

#26182

Support for bidirectional transforming channels

#26268

Tool for importing TopLogic dumps

#26276

New API for Progress dialogs

minor

#23563

Selection of a CalendarMarker implementation in the model

#25878

Remove EWE from TLCommittee / TLBoard

#25899

TL-Doc: Simplify TLObjectLinks

#25922

Replace DelegateStructureHtmlTree in POS and Prime with TreeComponent

#25935

Move definition of navigation role for org structure from contact to projectdemo

#25937

Include logback in TL Studio

#25942

DownloadButton for BinaryData attributes in Grid

#25954

Change ViewStateManager in tl-project to CommandApprovalService

#25960

Deprecation: remove com.top_logic.mig.html.HTMLTree

#25961

Deprecation: Remove EWE from tl-demo

#25962

Deprecation: Remove EWE and Tickt/TTS

#25966

Schedule: Collision detection for schedule shifts

#26005

Cache for TLModel type hierarchy

#26017

Utility to create singleton or empty list

#26022

Prevent unnecessary dialog during InApp component creation

#26045

Assertion on the model of a component

#26062

Youtube Plugin for CKEditor

#26082

CreateTypeOptionsByExpression: Include subtypes

#26106

Jump to default jump target in grid detail opener

#26119

Speaking error message for RegExpConstraint

#26179

Enable standard security for InApp components

#26184

Enforce encryption of configured passwords for kafka SSL

#26189

Default-For for generic dialogs

#26195

Introduce "commons" classifier for in-app implementations.

#26221

Environment variable tl_storage_dir also for start from development environment

#26222

TL script: list.reverse(), extension list.subList(...)

#26225

Also provide properties of subtypes for columns of tables to be displayed.

#26241

Remove CommandInvocation

#26263

No configuration defaults for `content-layouting` in layout configurations

#26274

Short-cut WindowScope.deliverContent(BinaryDataSource)

#26280

Functional interface: com.top_logic.layout.form.Constraint

#26295

Configure basic set of table columns in-app

#26297

Type index with annotation and configuration information

#26300

Prevent unnecessary copying when reading stacked configurations

#26316

Configuration to disable branches

#26329

Change user menu to standard popup

#26340

Disable table reset as single button

#26341

XML import: object refs with multiple ID attribute

#26344

set partnerGroup in selector.template.xml

defect

critical

#25842

TL-Sync deletes random objects if it does not find the actual ones to be deleted

#26311

GridComponent: Programmatic invalidation after multi-selection leads to undefined behavior

major

#22838

TLSync imports HAS_WRAPPER_ATT_VALUE.REV_CREATE from the source system

#24187

ValueDumper / ValueParser ignores BinaryData.getName()

#24189

BinaryDataFactory discards names for files > MAX_MEMORY_SIZE

#25598

NPE in TL-Sync when sending overwritten attributes whose definition is not exported.

#25934

Layout tooling fails in linked workspaces

#25958

Ant targets in Eclipse workspace fails with "The linked resource '/com.top_logic.basic.core/src' in project '.org.eclipse.jdt.core.external.folders' does not exist

#25967

TL-Doc: After a link the line does not break anymore

#25968

TL-Doc: view always jumps to the top when editing if heading format is selected

#25969

Application hangs constantly with wait cursor

#25974

NPE in deployed demo

#25975

Copy images between pages does not work

#25982

JS error when editing long texts in CKEditor

#25985

TL-Studio: Application startup fails due to unresolved dependency

#25998

TL-Script context help broken

#26037

MemoryLeak due to OptionsByExpression -> AttributeFormContext

#26059

MemoryLeak because the SecurityStorage is a ClusterManagerListener that does not deregister

#26084

On english pages you can find german TLObject links

#26088

Memory leak in DefaultLayoutGraphCleaner

#26093

Implementations of calculated attributes cannot be overwritten

#26112

Calculated attributes on historical stands may calculate incorrectly

#26152

Model editor: UML class diagram bounces after each selection

#26217

TL-Doc: No error message in case of failed import

#26353

Crash after deleting tile

#26358

Option lists are no longer loaded lazy

minor

#24425

ClassCastException on live change of a persistent list attribute

#25035

StructuredTextControl has problems with special characters in image filenames

#25603

Null argument on generation of JavaDoc for tl.element

#25801

NamedConfiguration and NamedConfigMandatory must be @Abstract

#25818

Documentation: link suggestions always in German even when editing the English translation

#25819

Too many link suggestions during link creation

#25883

Unnecessarily wide index in `hasStructureChild`.

#25884

Duplicate indices in `hasWrapperAttValueBaseAssociation` and all derivatives

#25907

Layout editor: inconsistent behavior of unfold state, selection and reaction to object creation

#25928

Invalid configurations for Producer and Consumer

#25949

TL-Doc: Copy&Paste transfers unwanted styles

#25951

Application tests: CheckLabeledExecutabilityOp fails to assert non-executability of literal ResKey reasons.

#25952

Model Editor: Enum default provider does not work for enum references for which singleton link storage was explicitly selected

#25953

Two enums with the same name cannot be created in different modules

#25957

Error when updating assization caches from the commit

#25970

DataItemControl not usable with multiple DataField's

#25972

There are no help IDs for the in-app editors stored in the "Development" area

#25976

Test Error with TL Script in Executability Rules in Application Configuration

#25977

No fallback for display names of languages

#25999

Disappearing toolbar in tile layout

#26002

ConfigurationItem-valued properties with format annotations may cause an attempt to create abstract config items when deserializing null values

#26006

Scrollbars in burger and context menus when resolution is changed

#26007

Unnecessary scrollbar in HTMLTree

#26008

No visual feedback for possible dropzones in FrozenTables

#26009

Monitoring cleanup tasks crashes if they are not registered

#26012

Help editor crashes when a user has chosen a language that is not in the supported languages of the application

#26019

Buttons in filter dialogs disappeared

#26021

DeepL translation service crashes the application if the service is not available

#26024

I18N for "Create page" is wrong in dialog

#26030

Two classifiers with the same name can be created in the same enum

#26031

Layout editor: Delete view and Delete dialog do not ask for confirmation

#26039

Gridcomponent: Display of context menu for new (transient) row object leads to UnsupportedOperationException

#26040

Partially no label for custom model type

#26041

In the context menu for a new grid line the command "Delete" is offered, crash on selection

#26042

Calendar control in filter dialogs does not work in Modern theme

#26043

Milestones / Grid: When a new milestone is created, a warning message is logged.

#26048

Enable GUI action after custom transaction

#26054

Misplacement of error icon for text fields in grid

#26055

TestComileJSPs fails in linked workspaces

#26064

Error with Boolean and Number support in JSON configuration types

#26069

TL script: Evaluate ToString only at compile time if arguments are primitives.

#26075

Incorrect options for configurations of components

#26077

Declarative forms: @Encrypted properties are displayed at the GUI in plain text

#26085

An attribute of type tl.model.search:Expr is not displayed in the form above a TL script editor

#26090

Memory Leak because the TLObject "IMAPMailFolder" is listener at IMAPFolder

#26092

Hidden attributes are offered to the user for selection in the table columns by default

#26095

Missing constraints for enumeration and classifier names

#26101

Attributes of type tl.model.search:Expr cannot be edited in the grid

#26103

JSR-305 annotations for Guava

#26110

POS: Risk elements: Warnings in log files when new instances are created

#26111

Context menu commands for table rows are erroneously executed on the table model when opening the context menu in the background of the table

#26114

Incorrect quoting in TagWriter for XML with CDATA sections in attributes

#26120

Misleading name for type options field in declarative forms

#26124

Missing replacement of %LAYOUT_RESPREFIX% in typed templates

#26125

Error "Invalid attribute name aria-label" in TL Doc after cut & paste

#26135

Cockpit tile: Schedule: Milestones cannot be edited, authorization check incorrect

#26137

No error message for invalid tooltips

#26138

Unfavorable DeepL configuration for translation of HTML fragments

#26139

JavaDoc: Embedded values are not displayed

#26140

TLModelCacheService slows down object creation by about 70%.

#26145

Infinite loop when updating KB caches

#26150

BPE still has old online help

#26151

tl-doc still uses legacy overlay to show the help editor

#26153

Migration: Replay fails if string values with line breaks are contained in the dataset where a line ends with a semicolon

#26154

Missing entries in the authorization view for InApp components

#26156

CommandApprovalService: Declared exceptions do not take effect.

#26159

Crash in design mode when a create form gets a list model via a channel combination

#26163

No feedback if layout overlay cannot be applied

#26166

Too many prompts when deleting in-app dialog

#26168

Attribute defaults cannot make transactional changes

#26171

A TL script expression entered in a wizard template is reformatted when transferred to the final template

#26172

Buttonbar in dialogs differs in Modern and Sidebar

#26175

Error at startup: I18NStructuredText cannot be indexed by Lucene

#26180

Still too many buttons in the sidebar layout

#26185

Script recorder: Templates can no longer be created

#26192

UuidDefaultProvider is displayed for all attribute types

#26198

Application does not store service config files in configured autoconf folder

#26199

Drag&Drop of text in trees and tables causes NPE

#26206

Configuration option "Enable help" always checked

#26210

Views cannot be deleted

#26214

#26218

TypedConfiguration: Crash when saving nullable enums

#26220

Transaction with input: button order inconsistent

#26223

TL script: Under unfavorable conditions wrong parameter values when evaluating local functions

#26224

Descriptions with line breaks cannot be saved at model elements

#26226

Dynamic columns: NPE if the column model is zero

#26233

Chrome Browser: Users Are Not Logged Out After Closing the Browser Window

#26239

KPI reports are no longer displayed

#26249

Invalid option for selection component

#26250

TL script: CCE when sorting in reverse order

#26251

Display of DateTime objects difficult to read

#26254

Layout export fails when changing layouts with overlays

#26259

Scriptrecorder template creation does not respond to new actions / Saves outdated work state

#26260

Error message in ObjectTreeNaming if the searched label is correct

#26262

Replay of tests replacing components not possible

#26264

TL-Doc: RequestLock when copying images

#26269

Single Selection in TableControl causes duplicate events

#26270

LastLoginAccessor loads all user session data

#26271

TL-Doc: Drag and drop of images does not work in some situations

#26272

Component buttons have no icon in disabled state

#26273

No tooltip for MessageBox buttons

#26289

CommandHandlerProxy are not displayed in the context menu

#26290

Unnecessary display "Edit/cite comment" in context menu

#26293

Stakeholder: Creation dialog allows any number of characters as "Description", the form only 255

#26294

Stakeholder: Description at creation is not a mandatory field / may be empty

#26296

Initializer of configuration dialogs do not set form model

#26301

NPE when importing dumps via the interface

#26304

Faulty analysis in DeleteChecker

#26305

ConcurrentModificationException in TLModelCacheEntry

#26308

With every click in the service editor "funny" messages appear in the log

#26310

Create executable WAR by default

#26312

Missing tooltip for internationalized names

#26313

Properties of type "Set" should not be mandatory

#26314

No selection of xlsx files possible in ScriptRecorder

#26320

Error when operating the application via keyboard

#26325

"Reset form" does not ask for confirmation

#26326

Form does not hide if type is not appropriate

#26335

Display of online help fails on Windows computers

#26338

Remove BoundCommandGroup id logic from defaultFor

#26342

I18NConstantsChecker does not make entries in missing.properties

#26343

Zero components by ReplaceComponentVisitor

#26346

TLProject: Structure planning: "Designation" column is not displayed

#26349

ClassCastException in ConfigurationPropertyListModelBuilder

#26352

Component name selection no longer a drop-down

#26359

Safety: Do not crash when looking up instances for a type whose table does no longer exist

#26360

Active color in decent theme disappeared

#26361

Too much choice in Security Object Provider

nice-to-have

#26089

Template for new app: Default module is not loaded via Autoconf

#26211

URLPathParser crashes with the empty string

#26212

NPE on form display, if the object does not have the displayed attribute, but a visibility is set

defect

minor

#26199

Drag&Drop of text in trees and tables causes NPE

InAppDevelopment LayoutFramework

Extracted from Ticket #26142.

If you drag text onto a TreeGrid with a TableDrop configuration, you get an NPE:

Caused by: java.lang.NullPointerException
    at com.top_logic.layout.dnd.DnD.getDndData(DnD.java:53)
	at com.top_logic.layout.table.control.TableControl$DnDTableDragOverAction.executeChecked(TableControl.java:2301)
	at com.top_logic.layout.table.control.TableControl$CheckedTableCommand.execute(TableControl.java:1304)
    at com.top_logic.layout.table.control.TableControl$TableCommand.execute(TableControl.java:1254)
	at com.top_logic.layout.basic.AbstractControlBase.executeCommand(AbstractControlBase.java:888)
    at com.top_logic.layout.basic.component.ControlSupport.executeCommand(ControlSupport.java:221)
	at com.top_logic.layout.basic.component.ControlComponent$DispatchAction.handleCommand(ControlComponent.java:231)
    at com.top_logic.tool.boundsec.CommandHandlerUtil.handleCommand(CommandHandlerUtil.java:27)
	at com.top_logic.mig.html.layout.LayoutComponent.dispatchCommand(LayoutComponent.java:2805)
    at com.top_logic.mig.html.layout.CommandDispatcher.internalDispatchCommand(CommandDispatcher.java:192)

The NullPointerException is a general issue caused by the switch to pre-validation introduced by Ticket #23472.

For security reasons, browsers only provide `event.dataTransfer` while handling a drop; otherwise, the value is `undefined`. Due to the changes in #23472, drag-and-drop data is now stored in the `window` object, specifically in `window.tlDnDData`. This data is populated during ` dragStart`. This means the data is also available during `dragOver `, in particular, and can be included in the calculation to determine whether a drop is possible at that point.

The NullPointerException now occurs if any text (e.g., the component name in the toolbar) that does not originate from a table or tree is dragged over a component that has a drop handler. Since the handler that populates ` window.tlDnDData ` is not executed during `dragStart `—because the event handler is registered only for tables and trees—the data is empty, and thus the DnD cannot be parsed during ` dragOver`. This ultimately results in a NullPointerException.

Implementation

The exception can be prevented by adding a check for the existence of ` window.tlDnDData ` during ` dragOver `.
The contents of `window.tlDnDData ` are reset at the end of a drag operation, ensuring that no inconsistent state occurs after a valid drag-and-drop followed by a drag-and-drop of text.

Test

Navigate to the Technical Demo > Components > Drag & Drop view and drag a text onto the factory floor plan. No exception should be thrown.

enhancement

critical

major

minor

defect

critical

major

minor

nice-to-have

minor

#26199

Drag&amp;Drop of text in trees and tables causes NPE

Implementation

Test

Drag&Drop of text in trees and tables causes NPE