Objects that inherit from RootModelComponentBase get registered in CompositeDisposable of RootModelImpl. These objects are often disposed much sooner than RootModelImpl with methods like RootModelImpl.removeOrderEntry or RootModelImpl.removeContentEntry which explicitly call dispose on these objects.

This change removes objects extending RootModelComponentBase from the CompositeDisposable of RootModelImpl.

ui: initialize Swing components in NamedConfigurable lazily to speed up opening Project Structure (IDEA-207895)

When Project Structure dialog is opened, it loads trees of project structure elements (modules, facets, libraries, artifacts), and their MasterDetailsComponent.MyNode instances create NamedConfigurable objects for all elements. It takes considerable time to create Swing components for all these objects if the project contains many elements, so it makes sense to postpone creation of Swing components in NamedConfigurable until 'createComponent' method is called.

Currently all IDEs except IntelliJ IDEA include PlatformProjectViewStructureProvider (registered in PlatformLangPlugin.xml) which hides .idea directory by default. In order to reuse PlatformLangPlugin.xml in IntelliJ IDEA and extract Java support as a separate plugin (IDEA-195719) we need to register PlatformProjectViewStructureProvider in IntelliJ IDEA as well and disable it there.

ExtractMethodObjectProcessor: revert c652bbf2; add a comment why UnsafeReturnStatementVisitor is non-applicable here

Python debugger opens Debug tab if only breakpoint at suspended line was found. Suspended position is taken from frames info, which is the same as PythonPosition for Python files, but differs for Jupyter files. That's why another conversion from/to frame positions was added for Jupyter debugger.

This reverts commit c0aac757

Current implementation of getModifiedPaths and getRenamedPaths for unparsed changes is not zero-cost. So it makes sense to have a fast size method to determine whether or not a commit can be shown in change browser.

[vcs-log] do not automatically show changes if one of the selected commits has more of them than the specified limit

We used to implicitly rely on PyTypingTypeProvider.getClassType() for this purpose
that, in turn, uses normal resolve machinery of a PyReference. But it (rightfully)
didn't work for references inside fragments created from text of alias RHS parts
as we prohibit resolving in them to avoid unstubbing of their containing files.