w3c/csswg-drafts

[cssom-view] Add methods to INPUT/TEXTAREA to return rects for INPUT/TEXTAREA selection

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#1,482 opened on May 31, 2017

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Description

As an end user, I've noticed that if I press End in a textarea on a line ending in whitespace, both Chrome and Firefox place the cursor after that whitespace. But, if I navigate towards that trailing whitespace using the right arrow key, the cursor jumps from the last non-whitespace character on the line to the first column of the next line.

To address the inconsistency, I filed this issue in the Chrome bug tracker, and was asked to create an issue here to add methods to INPUT/TEXTAREA to return rects for INPUT/TEXTAREA selection, like Range#getClientRects() and getBoundingClientRect. Please see that link for more context.

Contributor guide

Tech stack
css
Domain
frontendapi
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
5
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
over 1 week
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
CSSOM specificationDOM API understandingBrowser rendering basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
Research the existing CSSOM View Module specification to understand the current methods for selection rectangles. Review the linked Chrome bug for context on the behavior inconsistency. Examine how Range#getClientRects() is defined and propose a similar API for input and textarea elements. Consider discussing on the issue thread to clarify the exact method signatures.