* Fix detach of grid when it contains frozen columns

Fixes #8748

Fixes #8778

Fixes #8622 
Fixes #8623

Columns unregister themselves from the grid through removeColumn, also
when the whole grid is removed.

Fixes #8748

Fixes #8728

Synchronises parts of compatibility package code to match 7.7
Picks suitable patches for 8 code as well

endDependencyLoading that was used for starting to load the deferred
connector bundle is only called during regular application init if the
theme wasn't yet loaded when the initial UIDL request finished.

With this patch, the bundle is instead set to be loaded after the
initial UIDL message has been completely processed.

Fixes #4763

* Fix exception when no columns are shown or all columns are frozen

Fixes #8329

* Fix partial state change handling of JavaScript components

In ace0e324b6 (Use diffstate for JS connectors) 
partial state change handling for JavaScript components was introduced, but the
setNativeState method in JavaScriptConnectorHelper was not adjusted.
By removing the cleanup code from the updateNativeState method it can 
be ensured that the non-changed properties are still present on the state object.

* Add test for preserving untouched JS state fields

* Add @author and @since tags to drag and drop related new files (#8693)

* Add initial implementation of TreeGrid

* Refactor TreeGrid and related classes

* Fix potential class cast exception in TreeGrid#getDataProvider

* Add smoke tests for TreeGrid

* Add communication constants for TreeGrid

Use shared constant values for hierarchy data serialization and deserialization

* Fix event ordering in TreeGrid, add javadocs, keyboard navigation test

* TreeGrid improvements

* Add TreeGrid.getDataProvider to StateGetDoesNotMarkDirtyTest exclude list

* Merge remote-tracking branch 'github/master' into tree-grid

* Remove getEscalator override from TreeGrid

* Make DragSource extension/component available in DropEvent (resolves #8439)

* Update drag and drop test to use new API

* Change type of drag source and update javadoc

* Use existing data map instead of DataTransfer

A login page you want to redirect to is typically in the webapp root,
which you can now refer to as "Vaadin-Refresh: context://login.html"

* Fix java packaging order (#106)

Closes vaadin/archetypes#113

* Use proper UTF-8 encoding for Content-Disposition filenames (#19527) (#6607)

* Enable changing the backing bean for BeanItem (#4302) (#77)

When storing a bean to the database, you typically get a new and updated
bean instance back. By allowing to change the bean instance, we make it
possible to just update the single BeanItem instance which can be used
in many places.

* Make AtmospherePushConnection methods public (#7973)

There is no sensible way to use a custom version of APC, so protected
access does not help in any way to access the underlying resource and/or
connected UI.

* Use correct indexes in multiselect checkboxes after removing rows (#8072)

Fixes #8011

* Fix removal of hidden Grid columns (#8071)

Fixes #8018

* Call error handler for exceptions in UI.init() (#8055)

Fixes #4995

* Render font icon correctly on the 'more' menu item (#8126)

* Render font icon correctly on the 'more' menu item

Fixes #8125

* Reopen Grid details on attach, fixes #8015 (#8074)

Fixes #8015

* Fix broken Grid tests after picking changes from 7.7.7

Removed duplicate setDetailsVisible calls from onDetach

* Correctly detach components in merged cells when a static row is removed (#8142)

Fixes #8140

Fixes #2523

* Replace usage of getParent() to prevent client side NPE during onUnregister() (#8646)

Fix since tags for the server and shared modules and new types in client.

* Reduce ComboBox initial requests

Use initial fetched data on client side,
do not request data from server side for each time popup is opened.
Fixed initial filter being null for ComboBox on DataProvider,
causing unnecessary size & fetch for not-changed filter.
Fixed ComboBox sending default filter unnecessarily to server.
Fixed wrong page indexing in VComboBox -> ComboBoxConnector.

Fixes #8496
Fixes vaadin/framework8-issues#488

* Fix last item missing

When pageLength was 0 and nullSelectionAllowed,
the last item was not shown. Tried to sensify the API
for total suggestions versus total suggestions + null selection item.

* Fix ComboBox selected item updates

Handles changing of ItemCaptionGenerator or ItemIconGenerator,
need to update the selected item caption and icon separately.
Previously it worked because all data was sent all the time to client.
Doesn't fix the issue, when selected item is updated with refreshItem(),
and it is not on the active range that will be sent to client.
For that, ComboBox would need a separate notification about item update.

* Updated screenshots

* Add DragSource Extension (#8169)

* Add DropTarget Extension (#8170)

* Add DragStart Event to DragSource Extension (#8171)

* Make DataTransfer.dropEffect configurable (#8174)

* Make DragSource.dataTransfer data configurable (#8172)

* Add server-side Event for drop (#8177)

* Added license headers

* Extract handler methods, move DropEvent and DropListener to new file, move enums to top

* Replaced LinkedHashMap with Map and added List to preserve order of data

* Add API for adding a JS acceptance criteria for dragover and drop (#8178, #8179)

* Make DragSource Extension extendable (#8175)

* Make DropTarget Extension extendable (#8176)

* Added javadoc to protected methods

* Moved EffectAllowed to shared so that it could be used in shared state directly

* Moved DropEffect to separate file, some review fixes and javadoc

* Added list to DropTargetRpc to preserve order of data

* Remove event listeners on unregister

* Changed method names set/getData() to more descriptive set/getTransferData()

* Add server side dragStart event (#8171)

* Add style to prevent text selection to allow drag

* Remove target indicator style on drop

* Add client side dragend event listener for drag source

* Add server side dragend listener.
Attach client side listener only when server side listener added.

* Add drag source information to server side dragstart and dragend events.

* Fixed some issues addressed in review

* Trigger server side dragstart only when there is a listener attached

* Criteria script can be set as null to clear

* Use Js Interop instead of JSNI for handling event listeners

* Use elemental package instead of Js Interop for handling event listeners

* Add missing javadoc for public methods

* Add default value "uninitialized" to effectAllowed parameter

* Simple test UI for HTML5 DnD functionality (#8395)

* Add javadoc and other minor changes

Don't implement handlers on widget level.

Fixes #8422

Fixes vaadin/framework8-issues#463

Fixes  #8405

* Fix problem with re-opening the popup (#8446)

Fixed problem that disables opening of popup
after closing it by clicking the datefield-button.

* Fix issue #8446 in compatibility version PopupDateField also.

Schedule column ordering so that possible onUnregister methods get run first.

* Migrate v7 Grid tests. Next round.

Fixes #8419

* Add Grid editor events.

Fixes #8202.

* Add scroll methods to serverside grid (#8203)

Added scrollToTop(), scrollToEnd() and scrollTo(int row)

* Fix scrolling to view of opened details (#8203)

Removed dependency for DetailsManagerConnector from GridConnector.
GridConnector now handles one off listeners.

* Rename detailsRefresh to better show that it's one-off.
Add missing copyright header.

Running formatter:format will format all files in a submodule using an
embedded Eclipse compiler (based on Neon SR1)
according to the regular formatting settings file.

* Introduce empty selection functionality for NativeSelect.

Fixes vaadin/framework8-issues#545

Note that not all browsers yet support HTML imports. If a polyfill
is needed to load HTML imports, it must be loaded before HTML Imports
can be loaded. There is no automatic loading of any polyfills.

* Fix absolute layout component sizing on size change (#8255, #8256, #8257)

Changing from relative to defined size leaves the component positioned wrong,
also changing from defined size to relative size leaves the component in the
wrong position with the wrong size.

Change makes the wrapper rerun setChildWidgetPosition() that adds/removes
necessary css definitions to/from the cssPosition String.

* Clean test sources according to review.

When using async='false' for scripts created by scripts
the execution order is guaranteed to be the same as the order the
script tags are created

Fixes #5339, #3631

* Overload AbstarctComponent.setDescription() with content mode parameter

Fixes #8185

* Introduce DateTimeFile and InlineDateTimeField.

Fixes #8132

* Correct and provide declarative tests.

* Provide a date converter and UI tests.

* Better instructions in widgetset optimization view in the debug window.

The generated example code is ok, but steps to use them are not obvious.
Added more details to debug window instructions to make it clear what steps are
needed to optimize the widgetset.

Change-Id: Id46632697044223092ef772f98b1fcd69c28d0da

* Added support for HTML5 push/replaceState for proper deep linkin features

* Automated test script now works at least on chrome

* Uses html5 push/popstate to implement uri fragment feature

* fire legacy fragment change events also via popstate events rpc calls
* send new fragments via pushstate mechanism

* formatting

* Formatting and adding test and workaround for IE bug

* Formatting and depracated UriFragmentListener

* Aligned naming in the new API

* Ignored IE due to web driver bug

Tested a workaround with javascript based window.location.href fetch,
but that don’t seem to work stable enough.

* Add "deselect allowed" feature to the Grid.

Fixes #8149

Fixes #7005

First round for #8132.

Change-Id: I2fe67ae961bfb0f7c44ba704346762a0faf6da2c

# Conflicts:
#	client/src/main/java/com/vaadin/client/widgets/Grid.java

Change-Id: Icbed14cbef14c434f1909fa0350cb0364235c774

# Conflicts:
#	client/src/main/java/com/vaadin/client/widgets/Grid.java

Change-Id: I67dad4cfbd6e9e355c48703253ff3d6da00e4eef

Change-Id: I0ae9144817db3bb730c80748d5e9190484b323e7

# Conflicts:
#	uitest/src/main/java/com/vaadin/tests/widgetset/client/grid/EscalatorBasicClientFeaturesWidget.java

Change-Id: I73201908b537ca0a65106e03c9bad913b59fae9f

Re-added back disappeared commit from 7.7.5 migration PR:

Mark TextField/TextArea as busy when a text change event is pending
(#20469)

Change-Id: I404985ae0be1e7dc65171b610032f8649e700f50