GitLab

Note: this is an alternative solution for http://crrev/c/2235698

This interaction executes a number of callbacks for the input loop value. This is intended to be used to inflate UI elements for client-only values, i.e., for values that the backend can't specify.

Internally, ForEach loops are implemented by introducing the concept of callback contexts, which will change value and view lookup accordingly.

In particular, callback contexts are used to automatically replace placeholders of the form ${i} in value and view identifiers (where 'i' is the loop identifier). This allows creating and referencing values and views with templated names, such as "created_view_${i}" and "value[${i}]".

Bug: b/145043394
Change-Id: I53089252fe1cc14b2b1fb74cfc56d7314bc4b37c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2241975
Commit-Queue: Clemens Arbesser <arbesser@google.com>
Reviewed-by: Sandro Maggi <sandromaggi@google.com>
Reviewed-by: Marian Fechete <marianfe@google.com>
Cr-Commit-Position: refs/heads/master@{#780785}