Module layout_2013::construct

Creates flows and fragments from a DOM tree via a bottom-up, incremental traversal of the DOM.

Each step of the traversal considers the node and existing flow, if there is one. If a node is not dirty and an existing flow exists, then the traversal reuses that flow. Otherwise, it proceeds to construct either a flow or a ConstructionItem. A construction item is a piece of intermediate data that goes with a DOM node and hasn’t found its “home” yet-maybe it’s a box, maybe it’s an absolute or fixed position thing that hasn’t found its containing block yet. Construction items bubble up the tree from children to parents until they find their homes.

Structs

• FlowConstructor
  An object that knows how to create flows.
• InlineBlockSplit
  Represents an {ib} split that has not yet found the containing block that it belongs to. This is somewhat tricky. An example may be helpful. For this DOM fragment:
• InlineFragmentsAccumulator 🔒
  Holds inline fragments that we’re gathering for children of an inline node.
• InlineFragmentsConstructionResult
  Represents inline fragments and {ib} splits that are bubbling up from an inline.
• IntermediateInlineFragments
  Holds inline fragments and absolute descendants.
• Legalizer 🔒
  Maintains a stack of anonymous boxes needed to ensure that the flow tree is legal. The tree is legal if it follows the rules in CSS 2.1 § 17.2.1.

Enums

• ConstructionItem
  Represents the output of flow construction for a DOM node that has not yet resulted in a complete flow. Construction items bubble up the tree until they find a Flow to be attached to.
• ConstructionResult
  The results of flow construction for a DOM node.

Traits

• NodeUtils 🔒
  A utility trait with some useful methods for node queries.

Functions

• bidi_control_chars 🔒
  If the ‘unicode-bidi’ property has a value other than ‘normal’, return the bidi control codes to inject before and after the text content of the element.
• control_chars_to_fragment 🔒
• has_padding_or_border 🔒
  Returns true if this node has non-zero padding or border.
• is_image_data
• strip_ignorable_whitespace_from_end
  Strips ignorable whitespace from the end of a list of fragments.
• strip_ignorable_whitespace_from_start
  Strips ignorable whitespace from the start of a list of fragments.