Dala.Diff (dala v0.0.12)

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Public API for diff operations.

This module delegates to Dala.Ui.Diff for computing UI tree diffs.

Summary

Types

node_id()
patch()

Functions

diff(old, new)

Compute the diff between two UI trees.

Types

node_id()

@type node_id() :: String.t() | atom()

patch()

@type patch() ::
  {:replace, node_id(), Dala.Node.t()}
  | {:update_props, node_id(), map()}
  | {:patch_node, node_id(), non_neg_integer(), map()}
  | {:insert, node_id(), non_neg_integer(), Dala.Node.t()}
  | {:remove, node_id()}

Functions

diff(old, new)

@spec diff(Dala.Node.t() | nil, Dala.Node.t() | nil) :: [patch()]

Compute the diff between two UI trees.

Returns a list of patches to transform old_tree into new_tree.

Examples

old_tree = Dala.Node.from_map(%{id: "root", type: :text, props: %{text: "Hello"}}, "root")
new_tree = Dala.Node.from_map(%{id: "root", type: :text, props: %{text: "World"}}, "root")
patches = Dala.Diff.diff(old_tree, new_tree)