Fixes #11806

Fixes #10339

Fix connector tracker cleanup for the case where a component is
hidden by a request and is made visible again by push.

This fixes a regression caused by #9305.

Fixes #9905

As there is no "request end" call after invoking UI.access() from a background thread,
the connector map was not earlier properly cleaned afterwards. If you toggled visibility of a
component from the background thread, the tracker state became inconsistent.

If this becomes a performance problem, it could probably be optimized to that cleanup
is done in request end and only at the end of access if not inside a request.

Fixes #9654

* Add since tags for 8.1

Note that ConnectorTracker changes will probably be backported to 7.7
in #9331.

Immediately clean connectors which the client side does not know about

Fixes #9303

Change-Id: I3f48f9bb42b36d0a46926ec753f30df95491720b

Change-Id: I80b73b653e97904605dc62484a7448f3bfbf7226

Does not modify compatibility packages to keep to closer to Vaadin 7.7

Change-Id: Ic9c4944eb90218290545a04ecd7455eb63910012

Change-Id: I6485dee1ebba12b180a9063ed4b530f7dc63cd77

Change-Id: I33f1cc33969ff74a95b1b8cc0f2add589be5aae0

Change-Id: I5c740f4e9cb28103bab199f9a552153d82277e7e

A recently merged patch leaves out information from hierarchyInfo for
empty connectors with state changes. This must be taken into account
when looking for disappeared connectors that do not cause any hierarchy
change to be sent.

Change-Id: I9ae7150341a83798141d0a2806ee81cafe7c2f9a

Change-Id: I77b420738738a42ff50e2a509e4ac4072b1b6e1f

Change-Id: Ieec6ca2dd9b45ee1572dfed84247cb05e7d1f453

Change-Id: Ie5843c7fb5bb6365ceef998206df69302046e686

Comparisons with the ==-operator between a proxy and it's underlying
instance fail, so we should use a custom equals method instead.
Change-Id: Iaa86ae830fecbedfb1f55636e25f5affebf5aba3

Change-Id: I4809fbbdb48f3e36c8e1da8552ff3fa734714105

There are a few places in frequently used core classes which could
initialize collection classes with the correct (or slightly oversized)
length.
Maps are initialized with 2x the size due to its load factor.

Change-Id: I3aee5a60602937a8550ca5a200ec2a529ff36fe9

API change from:
    public static Iterable<ClientConnector> getAllChildrenIterable(final ClientConnector connector)
to
    public static Iterable<? extends ClientConnector> getAllChildrenIterable(final ClientConnector connector)

avoids creating wrappers in case the component has either no subcomponents
or no extensions. This covers the vast majority of components.

Change-Id: I48ffd2f26f09c265fae6e1aaabdbaa655d52ffb8

Change-Id: Iad73c44852c207f29381d59bea25275ac8f24dbd

cleanConnectorMap is a hot method.
This change improves multiple code paths:
1) The global resource handler is no longer get()ed from the session for
   each connector (was in two loops).
2) The ConnectorTracker is no longer get()ed from the UI for each
   connector (was in one loop).
3) values() iterator for ClientConnectors replaces
   keySet() iterator + get(key) call
4) use getUI() from ClientConnector instead manual method.
5) moved removeUnregisteredConnectors to ease inlining and readability.

Change-Id: I25ff5bc32d27d30ecd8d354922ec6e4a02b05921

Change-Id: Ic77338304dc7e58e49f27dcdaf0bab2e00f5bba6

* ConnectorTracker.getConnector() is now DnDService-aware
* Deprecated LCM.getDragAndDropService() is removed
* LCM.getConnector() simply delegates to ConnectorTracker.getConnector()

Change-Id: I9627d50f7386ead8d92ccbba27b4a558c03076c7

Change-Id: I15f6fff50e709238655a0a50f605a833e2be7d6f

Change-Id: I8b97444d33b9535b9073fd705fed15a6cc2992e7

Change-Id: I87632abe9d86927b7ba4254724fedfdb04513205

Swapping the if check in cleanConnectorMap to prevent unnecessary calls to
isComponentVisible when the connector is in uninitializedConnectors set.

Change-Id: If6305a908364f8a7bb51fd7302449c6f54c274a3

Change-Id: I589ede89583be90e99fbed6fe5c0c6c1ac4d7c0a

* Moved AbstractCommunicationManager abstract methods
  getThemeResourceAsStream and createBootstrapHandler to VaadinService
* Made ACM non-abstract and renamed to LegacyCommunicationManager
* Lifted anonymous inner BootstrapHandler subclasses into named public classes

Change-Id: I31739ce8a506d572e75ca8cd5509be215e01693d

* Move UIDL writing from AbstractCommunicationManager to UidlWriter
* Move request handling from ACM to RequestHandlers
* Move server RPC message handling to ServerRpcHandler
* Move portlet event notifications to PortletListenerNotifier (a RequestHandler)
* Communication handlers reside in c.v.server.communication

Change-Id: I087e923dbdf88c6b3fcaafbdb7f685d9d3dad0c1

Change-Id: Icc807cc2eb391fb0118800383fc93d1e23b04570

Change-Id: I419ce4581d1a8b84d4236a85a1333d23f3423b2e

* Avoid returning unregistered but not cleaned connectors from e.g.
getDirtyConnectors() and getConnector()
* Add some sanity checks to ensure unregistered connectors are not used

Change-Id: I1103586863d2f299d50af5058233a7b4c967d4c6

ConnectorTracker to prevent untimely unregistrations through other UIs
within the same session (#10112)

Change-Id: Id04c97970325be65b0b3c63756a2f2e731dd60d2

HasComponents.isComponentVisible is now SelectiveRenderer.isRendered

Change-Id: Ic3b9cd65278ffc2a38ee20c76ec771ee057268bf

Extended UISerialization test to both serialize and deserialize and also validate ConnectorTracker (de)serialization

Change-Id: Ifb8228bd56ec3635e4267e78160eef14dd9ff318

ConnectorTracker diff state is now transient and thus not serialized. This could be improved in the future (#9717)

This reverts commit 998c9c97b4.