258621 - Input of type image does not submit coordinates if image is not displayed

Status: RESOLVED INVALID

(Core :: DOM: Core & HTML, defect)

Description

[Benjamin Gavin]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040803 Firefox/0.9.3
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040803 Firefox/0.9.3

When you create a form with an input of type image, and the resultant display
shows the alternate text rather than the image itself, the form is submitted
with empty coordinates in the imagename.x and imagename.y form fields.  In my
case an ASP.NET ImageButton control is utilized to generate an image input
control, and the image happens to not exist yet, but I believe the error would
also happen if I disabled image display entirely.

The result of this [in my case] is that the ASP.NET infrastructure does not
properly generate a "PostBack" event.  If I examine the results given from
Internet Explorer, it does generate "dummy" coordinates based on the placeholder
image that is used, allowing the "PostBack" to be handled properly.

Now, in reality, I'm not certain who this bug belongs to [ASP.NET or Mozilla],
but the end result is that my application becomes unuseable to anyone with a
Mozilla derived browser.  What I would like to see is the x and y values being
populated with the relative coordinates of the "text box" containing the
alternate text.


Reproducible: Always
Steps to Reproduce:
1. Create a form with a single input field of type image where the image does
not exist
2. Click the resulting text [from the alt attribute]


Actual Results:  
field.x and field.y are empty

Expected Results:  
field.x and field.y contain the relative coordinates based on the text bounding
box which surrounds the displayed text

Comment 1

[Martijn Wargers (dead)]

Attachment: testcase

I can see the bug, using:
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8a4) Gecko/20040907
Firefox/0.9.1+

When using a debug build, I get an assertion on page load and assertions when I
hover over the input image:
###!!! ASSERTION: Form control has a frame, but it's not a form frame: 'Error',

file c:/mozilla/mozilla/content/html/content/src/nsGenericHTMLElement.cpp, line

2264

Comment 2

[Boris Zbarsky [:bzbarsky]]

The point of sending coordinates is that the back end may do different things
depending on where in the image you clicked.

Doing this for the case when the image is replaced means you're sending bogus
data to the server, possibly leading to unexpected results (such as having an
image control with "delete" and "save" regions which gets replaced and then the
user ending up hitting the "delete" region because of where they clicked on the
text).

So in any case when the original image is not being displayed, sending
coordinates is a major bug....

I'd suggest filing a bug on ASP.NET pointing all this out.

Comment 3

[Boris Zbarsky [:bzbarsky]]

*** Bug 281143 has been marked as a duplicate of this bug. ***

Comment 4

[Phil Ringnalda (:philor)]

*** Bug 342279 has been marked as a duplicate of this bug. ***