Basic building blocks for creating an application. Most of the iron elements were previously named the core elements, when compatible with the "Developer Preview" version of the Polymer library.
iron-list- the upgraded version of a virtualized infinite list, previously namedcore-list. ETA: Couple weeks.
Elements we're planning on building soon but haven't started yet
iron-label- still looking for the right way to bring what used to becore-labelinto the 1.0 world.
Elements we're not planning on building as part of this product line, but that one might be wondering about
A number of elements existed as core elements that are not in this product line:
core-action-icons- This wasn't really an element, and wasn't particularly heavily used.core-animation- The animation-related elements that were part of core will be created as part of theneonproduct line.core-docs- Deprecated: useiron-doc-viewer.core-drag-drop- Not currently working on.core-dropdownandcore-dropdown-menu- These were confusing UI to have incore, so we've moved them to thepaperelement set for now and made them easier to customize. More on the thought process behind this change in the blog.core-focusable- This has been re-implemented using Polymer behaviors - see for example thepaper-radio-button-behaviorinpaper-behaviors.core-item- This had UI opinion, so was re-implemented aspaper-item.core-layout- We're working on more stable, consistent layout elements.core-overlay- This is re-implemented as a behavior, iniron-overlay-behavior.core-popup-menu- This element wasn't particularly of unique value, so we're putting it away for now.core-scroll-header-panel- This had UI opinion, so it's been moved topaper-scroll-header-panel.core-splitter- This element was relatively trivial, so we've put it off for now.core-style- This element is not useful with Polymer's new styling system. Check out the latest docs for more.core-tooltip- This will becomepaper-tooltip.core-menu- This had UI opinion, and will becomepaper-dropdown-menu.