This PR addresses a crash in text input element due to a hack to prevent
text input being trimmed.
The updated behavior will only add `zero width space` unicode character
to the node if there's no text content instead of adding it constantly.
Also by adding the same `zero width space` unicode character to text
area when there's no text content within will allow text area element to
properly display caret.
<img width="197" alt="截圖 2025-04-11 中午12 51 00"
src="https://github.com/user-attachments/assets/10bc7314-9aa3-49df-baac-ef26d39a96d8"
/>
This PR also addresses issues with multiple glyph runs:
https://github.com/user-attachments/assets/658db56f-b166-47ec-bc77-c6c13114d669
Testing: This PR is tested using:
- `./mach run -d 'data:text/html,<input id="input_element"
value="xxxxxxxxxxxxxxxxxxxx">'`
- `./mach run -d 'data:text/html,<textarea id="input_element"
value="xxxxxxxxxxxxxxxxxxxx">'`
without causing crashes, while the results should be covered by WPT
tests
Fixes: https://github.com/servo/servo/issues/36449
---------
Signed-off-by: DK Liao <dklassic@gmail.com>
Previously `<textarea>` was just displaying node contents, which is the
original text content, not the one updated by later typing. This change
fixes that issue.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
This only paints text in input fields. Selection and cursor are still
not painted.
In addition to adding this feature, the change also updates the
user-agent.css with the latest from the HTML specification. Extra
padding and extraneous settings (such as a bogus line-height and
min-height) are also removed from servo.css. This leads to some new
passes.
There are some new passes, this introduces failures as inserting text
reveals issues that were hidden before. Notably:
- failures in `/html/editing/editing-0/spelling-and-grammar-checking/`:
We do not support spell-checking.
- Most of the rest of the new failures are missing features of input
boxes that are also missing in legacy layout.
