Closed
Bug 27789
Opened 26 years ago
Closed 26 years ago
Selection operations in FORM/TEXTAREA are too slow
Categories
(Core :: Layout: Form Controls, defect, P3)
Tracking
()
VERIFIED
FIXED
People
(Reporter: ckim, Assigned: buster)
References
()
Details
From Bug Helper:
User-Agent: Mozilla/5.0 [ja-JP.eucJP] (Linux; I)
BuildID: 2000012520
When I am writing bug report for Mozilla M13 in
http://www.mozilla.org/quality/help/bug-form.html
and editing "Description" in the TEXTAREA widget,
cursor operation becomes too slow.
It takes half a second to move cursor single character distance.
Thus certain amount of cursor movement causes nearly hang-up like
behavior.
However, ordinary text input and space/backspace operation work
normally.
Only the cursor operation is strangely slow.
Reproducible: Always
Steps to Reproduce:
1. Launch Mozilla by "./mozilla<\n>"
2. Visit homepage where FORM/TEXTAREA resides,
say http://www.mozilla.org/quality/help/bug-form.html
3. Type in some texts in a TEXTAREA such as "Description"
4. Move cursor using arrow keys.
5. You will see cursor moves very slowly while ordinary text typing
works perfectly.
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Comment 1•26 years ago
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Steve, I'm not sure if this is yours, Travis', or Saari's.
Assignee: karnaze → buster
I found that every text entry widget (not only TEXTAREA), no matter whether
it is FORM/TEXT or text entry field in Address book window, has exactly the
same problem.
So I think that this problem should belong to "XP Toolkit/Widget".
Additionally, this bug report is about cursor key movement.
However, EMACS-like key operations such as Ctrl+A, D, E, and such also work
very slowly.
guessing this is specific to linux. windows seems pretty fast. mac?
does anybody have a clue where the performance problem is? key bindings?
selection? caret drawing latency (ie, the selection is changed really fast, but
the cursor doesn't draw for a while), ???
a good start would be a quantify run.
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Comment 4•26 years ago
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Adjust summary to reflect the fact that it is moving the selection that is slow.
Summary: Cursor operation in FORM/TEXTAREA is too slow → Selection operations in FORM/TEXTAREA are too slow
I have just tested M13 on Solaris7 (SunOS 2.7) and found no problem I reported
here for Linux.
So I think this possibly be a Linux specific thing.
Let me change the resolution FIXED.
Status: NEW → RESOLVED
Closed: 26 years ago
Resolution: --- → FIXED
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Description
•