**************************
What's New in Karabo 2.8.0
**************************

The **most relevant improvements**, fixes and changes are:

- GUI: The EditableOptionsBox has been deprecated and is no longer supported
- GUI: The Workflow widgets have been deprecated and are no longer supported

- Bound API: Method 'validate' of Validator object returns tuple: (flag, error, validated)
             In case 'flag' is false, it would have raised an exception before.

- C++ API: The pugiXML dependency has been moved as a dependency.
           Headers can be found in the ``extern/include`` directory instead of
           ``include/karabo/pugiXml``. e.g. the ``include`` statements like
           ``#include <karabo/pugiXml/pugixml.hpp>`` should become
           ``#include <pugixml.hpp>``

          The ``BaseDevice`` class has only methods used by the ``DeviceServer``.
          Although no device code should make use of these methods, it is possible
          that some unit tests working against earlier version of Karabo will
          break. A pattern that was observed is: A unit test uses `BaseDevice::create`
          method to test the ability of a server to instantiate a device and
          tests the device's behaviour using ``Device`` specific methods, e.g.
          ``getCurrentConfiguration``. This test should be adapted to either
          cast the ``BaseDevice::Pointer`` to a ``Device::Pointer`` with a
          ``boost::dynamic_pointer_cast`` or by calling the public method
          ``slotGetCofiguration``.

- MDL API: The `Image` element is now supported natively and DAQ compatible!


Detailed Merge-Log
==================

Bound/cpp core
++++++++++++++

- Bound: proper lock protection in deviceSchema and config parameters of the device always need lock protection to avoid race conditions. !4062
- Bound: PythonDevice.get - copy hash and its vector. It should not be possible to change the content of PythonDevice._parameters without the proper lock. !4081
- Bound: optionally set server hostname !4094
- Bound: Fix silent validation exceptions (BOUND API) !4152
- Bound: 'readOnly' attribute for TableElements in Bound-Python. !4212
- Bound: Fix putting list into hash with integer as large as uint64 !4167
- C++: no extra thread for server process !4057
- C++: Validation parameters in C++ !4158
- C++: Enforce row schema for table elements. Tables without row description make no sense - and harm the GUI. !4100
- C++: optionally set server hostname !4095
- C++: Fix file logger index file !4130
- C++: Fix synchronous code paths in asyncReadXY. These paths have to read all (not only '_some') data. !4146
- C++: Table element 'connections' in the 'OutputPanel' configuration is now readOnly. !4178
- C++: Trust train ids from time server even if reset. Before, the C++ sever assumed strongly monotonous increase of train ids. !4193
- C++: Add filter for network appender !4204 !4220
- C++: Log topic and avoid using any _beats topic !4153
- C++: all SignalSlotable now carry a "type" in instanceInfo !4226
- C++: Fix for output channel schema updates - schema Hashes must not contain "__classId" key !4209

Dependencies and deployment
+++++++++++++++++++++++++++

- BUILD: Add cmake build alternative !4229
- DEPS: karabo develop processes DEPENDS tags correctly !4148
- DEPS: added pugixml to dependencies !4189
- MDL: add defaultValue to middlelayerserver help !4090
- MDL: Help option in krabo-middlelayerserver !4079
- InfluxDB: Add influx migration traceability. Adapt to use authenticated access in the Influx Server. !4183
- CI: re-enable X server for conda !4231
- WEB: optionally set hostname on webserver !4201

Tests
+++++

- CI: use a specific broker for tests !4073
- CI: Fix CI display settings for headless Qt tests !4097
- C++: Longer timeout in JMS test with 100 messages !4098
- C++: Stabilise strand test. Ensure that handler cannot be called when captured variables are dead. !4096
- C++: Take care that the slots in LockTest always reply !4106
- C++: Fix for failures of DataLogging_Test on the CI !4112
- C++: Fix device integration test. Order guarantee does not apply per process, but only per sender/receiver. !4218
- C++: Relax timeouts in signal slotable test. Hijacked this to remove also some confusing casts elsewhere... !4202
- C++ logger tests: aggressively long timeouts for influxDB !4223
- C++: relax timing test !4228
- C++: more reliable DeviceClient_Test::testGetSchemaNoWait. no repeated triggering of schema requests. longer timeout !4219
- More fixes to Influx Data Logging and its integration tests. !4200
- Fix for Influx Logger Integration Test getting stuck or crashing when Influx is not available !4147
- Fix data logging integration tests !4166
- C++: Fixes for data loggers to stabilise tests !4170

Middlelayer Core
++++++++++++++++

- MDL: Fix invalid configuration retrieved for PropTestMdl device. !4074
- MDL: Enforce row schema for vector hashes !4078
- MDL: Provide a copy of the system topology when working with it !4075
- MDL: set server hostname !4076 !4113
- MDL: Implement Image Element and provide ImageData !4145

Core Devices
++++++++++++

- GUI Server: Send multiple devices configurations changes in a single hash to the connected GUI clients. !4058
- GUI Server: Forward project manager signal of changed project uuids to GUI clients !4110
- GUI Server: Fix GuiServerDevice Schema bookkeeping !4137
- GUI Server: Add slotDisconnectClient !4164
- Alarm Service: Fix alarm service and thus spurious integration test failures !4117
- Data Logger: make flush reliable !4171
- Datalog Reader: Logreader for influxDB properly replies error (and not empty result) !4168
- Datalog Reader: slotGetConfigurationFromPast now throws instead of reply empty !4157
- Datalog Reader: Count slot calls for history !4224
- DataLogger: Get rid of DataLogger::handleChanged and DataLogger::handleSchemaUpdatedDelegate 'handleChanged' and 'handleSChemaUpdated' completely to 'DeviceData' and its derived classes. !4180
- InfluxDB: InfluxDbClient now configurable and automatically flushing the batch !4177
- InfluxDB: Separate influx url for read and write !4216

Graphical User Interface
++++++++++++++++++++++++

- GUI: Provide a const type definition !4071
- GUI: Refactor if a proxy action is allowed !4024
- GUI: Fix invalid indices in table element !3967
- GUI: Clean application on every teardown !4059
- GUI: Provide generic support for access levels !4043
- GUI: Cleanup the configuration singleton !4050
- GUI: More cleanup in the table element !4061
- GUI: Drastically increase performance of daemon widget !4069
- GUI: Access level dependent delegates - button clickable state in daemon widget !4044
- GUI: Rename system and tree in topology !4064
- GUI: Clean a bit the globals file !4065
- GUI: Clean and fix the spin box focuses !4066
- GUI: Remove host node from topology if no servers !4063
- GUI: Clean even further the table element !4072
- GUI: provide more colors in the cycler !4080
- GUI: Align tests without row schema in table element !4086
- GUI: Deprecate EditableOptionsBox !4085
- GUI: Clean and unify spinboxes once more !4083
- GUI: Clean up and unify table element with the schema hash. Fairly speed up the processing !4077
- GUI: Clean edit list controller !4089
- GUI: Enable log axis in viewbox if enabled !4093
- GUI: Move create html hash to native !4088
- GUI: Color table button edit conf !4087
- GUI: Cleanup the wheel double edit !4056
- GUI: Clean hex widget and provide state awareness !4084
- GUI: Little cleanup of the time axis !4103
- GUI: Clean table button event state in configurator !4101
- GUI: Prevent items leaving scene completely by dragging !4105
- GUI: Clean the display controllers from slots !4099
- GUI: Align the wheeledit tests !4109
- GUI: Enable closing of the alarm panel !4102
- GUI: Let the project manager know which items we store !4108
- GUI: Histogram auxplot !4111
- GUI: Fix a typo in the messagebox for scene retrieval !4116
- GUI: Configurator mandatory optimization !4082
- GUI: Enable moving of rows in the table element !4115
- GUI: Provide a bunch of tests for the table element !4118
- GUI: Don't show documentation link for classes in topology !4120
- GUI: Add icons in the table context !4119
- GUI: Provide several icons for the project items context menus !4121
- GUI: Escape in info popup for value descriptions !4123
- GUI: Provide more error handling in GUI network !4125
- GUI: Char editor is validated !4132
- GUI: Show a reasonable time format in configuration from past !4133
- GUI server: When disconnecting a client, better trigger device disconnection under mutex !4131
- GUI: HexLine edit validator !4128
- GUI: Change font on scene generation: `Ubuntu` -> `Sans Serif` !4139 !4140
- GUI: Increase border allowance on widget resize !4138
- GUI: Store the closable panel configuration !4136
- GUI: Toggle curve visibility by clicking on legend boxes !4135
- GUI: Implement vector xy graph !4151
- GUI: Provide local time on conf from past feedback !4156
- GUI: Initialize the alarm state of the project device correctly !4126
- GUI: Fix replace scene from file !4161
- GUI: Provide a size hint for the graph widgets !4176
- GUI: Accurate movement of items on the scene !4185
- GUI: Implement GridView in Scene !4175
- GUI: Align the copyright date in the about dialog !4188
- GUI: None timestamp protection in tooltip of image widgets !4192
- GUI: Set the background of the images to transparent !4191
- GUI: Make double click in project expand and fold nodes !4174
- GUI: Enable image export on plot items !4173
- GUI: Account for reconfigure failures in the client !4197
- GUI: Fix the resizing of layouts on the scene !4186
- GUI: Setup an about icon in the topology and project for context !4194
- GUI: Show empty plot when receiving empty vector in vector graph !4181
- GUI: Select project device in topology !4172
- GUI: Port MultiCurve widget to PyQtgraph !4154
- GUI: Executed message boxes automatically close after popup seconds (60) !4203
- GUI: Request reply of execute errors in the client !4199
- GUI: Transparent graph view in plots !4182
- GUI: Separate trendline button click and drag from historic data retrieval !4149
- GUI: Don't use separators when adding actions to viewbox !4215
- GUI: Better debug diagnostic when projects are loaded multiple times !4222
- GUI: Adapt the unit test for inf values in VectorGraphs !4214
- GUI: Enable duplicate of devices without indexing !4227
- GUI: Account for scene panel padding in Qt5 !4217
- GUI: Modify the GUI background processing for GIL !4235
- GUI: Select the topology on disconnect !4232
- GUI: Middle panel icons !4241
- GUI: Show topology panel on show project device !4239
- GUI: Different legend style for plots !4238
- GUI: Check vector size in vector xy graph !4237
- GUI: Performance increase alarm panel - Rework !4236
- GUI: Fix loss of configuration when renaming a device in project !4225
- GUI: Implement first AccessRoles for scene and macro editing !4187
- GUI: Use largest triangle three buckets for downsampling !4210
- GUI: Provide initReply from instantiation on failure !4243
- GUI: Close duplicated scenes by simple when they are unattached !4247
- GUI: Fix update dialog not giving output in Qt5 !4244
- GUI: Provide detailed text in message boxes and fix a few !4248
- GUI: Account for None values on the scene for the most important display widgets !4250
- GUI: Provide `Abort` and `Halt` with icon !4213
- GUI: Set the application style to Fusion !4234
- GUI: Scene grid snapping !4254
- GUI: Fix the console input !4260
- GUI: Set the minimum height of number line edits !4258
- GUI: Refactor the downsampling to agnostic range !4261