Closed Bug 1396640 Opened 7 years ago Closed 7 years ago

Datalist-based text field completion does not work in "about:addons"

Categories

(WebExtensions :: General, defect)

Product:
WebExtensions
Component:
General
Version:
56 Branch
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

(Not tracked)

Status:
RESOLVED DUPLICATE of bug 1387624

People

(Reporter: alexander-mozilla, Unassigned)

Details

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:56.0) Gecko/20100101 Firefox/56.0
Build ID: 20170831165232

Steps to reproduce:

I just added a dynamic <datalist> to the "options_ui" page of my WebExtension and while everything seemed to be correctly set up, there is no autocompletion popup appearing below the text field (<input type="text" />) on the extension's options page.


Actual results:

However when double-clicking into the text field (which would normally show the popup), the following message is logged from line 278 of browser.xml into the debugging console of "about:addons":

    Empty string passed to getElementById().

Opening the debugger at that line I see:

      <property name="autoCompletePopup"
                onget="return document.getElementById(this.getAttribute('autocompletepopup'))"
                readonly="true"/>

Does this mean that registering an autocomplete popup container for "about:addons" was simply forgotten?

This problem does not happen when opening the same "option_ui" page in a separate browser tab.


Expected results:

The autocomplete popup with the items to autocomplete should appear.
Example of a minimal extension that should reproduce this issue:

# manifest.json

{
	"manifest_version": 2,
	
	"name":        "Demo extension",
	"description": "Test Test Test",
	
	"version": "1.0",
	
	"options_ui": {
		"page": "options.html"
	}
}

# options.html

<!DOCTYPE html>
<html>
	<head>
		<title>Options page</title>
	</head>
	
	<body>
		<datalist id="stuff">
			<option value="What" />
			<option value="am" />
			<option value="I" />
			<option value="doing" />
			<option value="here?" />
		</datalist>
		
		<input type="text" list="stuff" />
	</body>
</html>


If you load the above as a WebExtension, you should be able to see the auto-complete items when visiting "options.html" directly, but not when visiting it through the preference page of the extension on "about:addons".
Component: Untriaged → WebExtensions: General
Product: Firefox → Toolkit
Status: UNCONFIRMED → RESOLVED
Closed: 7 years ago
Resolution: --- → DUPLICATE
Product: Toolkit → WebExtensions
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