blockr.core 0.1.3

• Block-server construction is now ordered by visibility – on-screen blocks and their upstream closure build first, the rest in the background (option background_construction_delay, default 50 ms; 0 opts out).
• Blocks now carry an eval status (dormant, waiting, unset, failed, ready) that gates evaluation, rendering and downstream data, so a block never evaluates against missing inputs or shows a stale result.
• Code export (generate_code()) now waits until every block is settled, showing a “board not ready” note instead of a partial script.
• Block conditions (errors, warnings, messages) are exposed as tidy data frames via server$conditions and board$conditions(); the block server no longer returns its raw cond object.
• The notify() helper gains glue and log arguments for literal (brace-safe) text and skipping redundant logging.
• The allow_empty_state argument of new_block() now accepts a structured list(input = ..., data = ...) form to relax required inputs and the variadic minimum per input kind.
• Boards for incoming requests are now resolved by an app-level loader argument to serve() (default local_loader()); this drops the process-global staging slot, so get_serve_obj() and restore_board()’s meta argument are gone.
• Block- and registry-contributed board options (e.g. the table preview page_size, n_rows, filter_rows) are now saved and restored, not reset to defaults on reload.
• Boards can be deployed read-only via the server-enforced blockr.locked option, which refuses every mutation while set.
• Block registration metadata can now be declared with roxygen2 tags (@block, @blockArg, …), collected by the new block_registration_roclet(); extension packages register via the exported register_package_blocks().
• Block registry entries gain a structured argument spec (new_block_args(), new_block_arg()) with JSON-Schema-subset type descriptors (arg_string(), arg_enum(), …), read via block_metadata(); registry_metadata() is deprecated.
• The manage-links and manage-stacks plugins no longer flicker cell inputs, clobber staged edits, or needlessly re-render on a board re-emit.
• Board accessors (board_blocks(), board_links(), board_stacks()) are now pure reads, removing quadratic re-validation that dominated large-board startup.
• New exported generic external_ctrl_vars() and predicate has_external_ctrl() expose a component’s externally controllable variables.
• New exported trim_rv() fully removes entries from a reactiveValues object (assigning NULL leaves the key behind); unlinking a variadic argument now drops it outright.
• The str_value() compact printer, with matching utils::str() methods, now covers all remaining domain classes and containers.
• The blockr_deser.list() method now forwards ... to per-class deserializers, letting callers thread context to nested deserializers.

blockr.core 0.1.2

• The mod slots in update(...) payloads for blocks, links and stacks now uniformly expect a delta shape: a named list keyed by entry ID, where each entry is a named list of argument values to apply on top of the live entry.
  • For blocks, keys must be in block_external_ctrl_vars(blk) — non-ctrl-able changes go through rm + add. Ctrl-arg writes hit the corresponding reactiveVal in place; block_name (always treated as ctrl-able) updates the block’s registry attribute.
  • For links and stacks, deltas are merged onto the current entry via the new update_link() / update_stack() S3 generics. The default methods reconstruct the entry through its stored constructor, preserving sub-class attributes. Sub-class owners (e.g. dock_stack adding color) only need to register a method when their constructor deviates from the convention (#175).
• block_external_ctrl_vars() always includes "block_name" — every block can be renamed through update(...) regardless of its external_ctrl opt-in. The default ctrl plugin panel renders a block_name field on every block card alongside any opted-in ctrl vars. block_supports_external_ctrl() (which would now be TRUE for every block) has been removed; the gates that used to call it have been simplified accordingly.
• The default block_server.block now constructs a block_name reactiveVal per block and appends it to the vars list passed to the ctrl plugin. Two guarded observers keep that reactiveVal in sync with the block’s block_name attribute on the board (one emits an update(mod = ...) when the ctrl plugin writes the rv; the other pulls registry-attr changes back into the rv). The ctrl_block_server plugin signature is unchanged — block authors and custom ctrl plugins see uniform vars reactiveVals.
• A blockr option attach_default_packages can be set to opt into evaluating block expressions with objects from default packages directly available.
• Add ctrl_block() plugin for external block control, allowing blocks to be driven programmatically from outside the standard block UI.
• Add clear_board() for removing all blocks/stacks from a board.
• Add bbquote() and helpers (., ..) for cleaner code generation via bquote()-based quasiquotation.
• Export custom_plugins() and custom_options() for easier board customization.
• Add block_metadata() for retrieving per-block metadata and attach block metadata with defaults to block objects.
• Export test utilities (blockr_test_exports(), new_mock_session(), export_safely()) for use in downstream package tests.

blockr.core 0.1.1

• Add Block-level notifications via (optional) expr server return value component cond.
• Export get_board_option_value() to make available current option settings via session$UserData.
• Introduce (optional) dependency on thematic to auto-style plots.
• Export toolbar_ui() which takes case of the “core” toolbar UI component.
• Utility functions chr_ply() and related, as well as miscellaneous utilities such as set_names(), coal(), etc. are now exported for use in dependent packages.
• Export export_code() to make it easier for third-party generate_code() plugin implementations.
• Use evaluate::evaluate() to capture plots.
• Add new_fixed_block() for applying a fixed (i.e. non-paramtetrized) transformation to data input.
• Board server callbacks are invoked with an additional argument session.
• Export assertion utilities such as is_string(), is_count(), etc.
• Improved ser/des, which now includes package/constructor information for all board, blocks, stacks and options. The corresponding infra
• Board options now contain UI/server components to provide more options for customization. Also blocks can require certain options to be available.
• Introduces block_render_trigger() to control per block class when to re-render the block output.
• Rework of block notifications to provide a reactiveValues() object containing notification types a separate components.
• Auto-ID generation can now be customized with a default provided by the ids package (if available).
• Use the glue package for logging/block notifications; add a glue-based text block.
• New board restore mechanism based on session$reload().
• Improvements to the registry: block icons and a fixed set of categories.

blockr.core 0.1.0

• Initial CRAN submission