Firefox 27 附加组件兼容性

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fang5566

2014-01-22 09:16
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http://blog.mozilla.org/addons/2014/01/21/compatibility-for-firefox-27/

General

Do away with downloads-indicator. The downloads-button and downloads-indicator nodes were serving the same purpose, so the former was kept and the latter was removed. If you’re using downloads-indicator in your JS or CSS code, make sure to replace it with downloads-button.
[OS.File] Inconsistent cross-platform behavior due to O_APPEND.
If you’re using the OS.File library, opening files on non-Windows
systems would have opened them with the append option on by default,
while not so on Windows. This change makes all file open calls not
append by default.
Findbar for Stylish editor is broken. If your extension includes a view which uses a findbar, it may be broken on 27. The details about this change can be found on bug 939381.
Remove -moz-rgba() and -moz-hsla(). The unprefixed CSS functions should be used instead.

XPCOM

Stop exporting JS symbols in Firefox.
JSAPI is no longer available to extensions, which should only really be
a problem for very specific binary add-ons. There are better ways to
run JS in your extension anyway.

New!

Need a way to create invisible, permanent docshell.
If you’re currently using the hidden DOM window or another hack to keep
a hidden DOM structure, you might want to give this one a look. With createWindowlessBrowser, you can create a hidden content or chrome window.
Add log4moz.js to toolkit as Log.jsm.
log4moz is a very useful logging tool based on its popular Java
counterpart, log4j. It has existed in various forms along the years, but
now it is very easily accessible using Log.jsm.
Expose DOM URL to js modules. You can now access the URL global constructor from a JSM.
Command line option -jsconsole should open the Browser Console. Like it used to be possible with the old Error Console, now you can invoke the Browser Console from the command line.
[OS.File] Add a function to recursively remove directories.
Option to deobfuscate JavaScript in the debugger.

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