On Sep 25, 2007, at 8:47 AM, Bjoern Hoehrmann wrote:
* Oliver Hunt wrote:
Obviously the spec should not (cannot?) define accelerators, but we
would ideally have some kind of specification to define what events
should be fired, and whether they should be allowed to prevent
default handling, etc. It is these that it would be good to define.
I am afraid it is not really clear to me where the specification is
lacking in this regard. To give an example, my desktop has a launch
mail application key. If I press it, the browser should not make that
fact available to possibly malicious web sites, much less allow them
to prevent me launching the mail application. In some other context
it might well be appropriate to make the application aware of the key
press and perhaps allow the application to prevent the default action.
Accelerator keys == key combos to hit menu items, such as ctrl/cmd-
a,s,d,z,x,c,v,b,u,i,p,f...
All of these sequences generate events, but there is no definition
for when they should be fired, nor whether they are cancelable.
I do not understand what is unclear about what events should be fired,
could you give a specific example of keyboard input and the possible
interpretations of the current specification text?
Currently the 4 browsers, Safari, Opera, IE, and Firefox al do
slightly different things, for instance when hitting ctrl-c (or cmd-c
on mac):
Safari 3 beta (3.0.4), Mac:
* keyDown: U+0043, 67
* keyPress: U+0043, 99
Firefox 2, Mac:
* keyDown: undefined, 224
* keyDown: undefined, 67
* keyPress: undefined, 0
* keyUp: undefined, 67
* keyUp: undefined, 224
Firefox 3 alpha (3.0a6), Mac:
* keyDown: undefined, 224
* keyUp: undefined, 224
Opera 9.5 alpha (4404), Mac:
* keyDown: undefined, 17
* keyPress: undefined, 17
* keyDown: undefined, 67
* keyPress: undefined, 99
* keyUp: undefined, 67
* keyUp: undefined, 17
Internet Explorer 7, Win (obviously :D):
* keyDown: undefined, 17
* keyDown: undefined, 67
* keyUp: undefined, 67
* keyUp: undefined, 17
Firefox 2, Win:
* keyDown: undefined, 17
* keyDown: undefined, 67
* keyPress: undefined, 0
* keyUp: undefined, 67
* keyUp: undefined, 17
Firefox 3 (3.0a6), Win -- identical to firefox 2, win.
Opera 9.5 alpha (9500):
* keyDown: undefined, 17
* keyPress: undefined, 17
* keyDown: undefined, 67
* keyPress: undefined, 67
* keyUp: undefined, 67
* keyUp: undefined, 17
In Firefox and Safari the ctrl/cmd-c accelerator can be cancelled,
and so prevent the app itself from ever performing the copy. IE does
not send a keypress for the event, Opera sends keypress events for
each key in the sequence, of the browsers that send keypress events
there is no consensus on what the keyCode should be on the keypress.
--Oliver
