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GUAC-862: Simplify keydown logic. Restore workaround for Chrome meta bug.

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This commit is contained in:
Michael Jumper
2014-09-28 23:54:04 -07:00
parent dd3a1af3f2
commit 3e8539381b
1 changed files with 38 additions and 30 deletions
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68
guacamole-common-js/src/main/webapp/modules/Keyboard.js
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@@ -457,7 +457,7 @@ Guacamole.Keyboard = function(element) {
"KanjiMode": [0xFF21],
"Katakana": [0xFF26],
"Left": [0xFF51],
"Meta": [0xFFE7],
"Meta": [0xFFE7, 0xFFE7, 0xFFE8],
"ModeChange": [0xFF7E],
"NumLock": [0xFF7F],
"PageDown": [0xFF55],
@@ -905,45 +905,53 @@ Guacamole.Keyboard = function(element) {
// Keydown event
if (first instanceof KeydownEvent) {
var keysym = null;
var accepted_events = [];
// If event itself is reliable, no need to wait for other events
var keysym = first.keysym;
if (first.reliable) {
if (keysym) {
release_simulated_altgr(keysym);
first.defaultPrevented = !press_key(keysym);
recentKeysym[first.keyCode] = keysym;
}
return eventLog.shift();
keysym = first.keysym;
accepted_events = eventLog.splice(0, 1);
}
// If keydown is immediately followed by a keypress, use the indicated character
var next = eventLog[1];
if (next && next instanceof KeypressEvent) {
keysym = next.keysym;
if (keysym) {
release_simulated_altgr(keysym);
first.defaultPrevented = next.defaultPrevented = !press_key(keysym);
recentKeysym[first.keyCode] = keysym;
}
return eventLog.shift();
else if (eventLog[1] instanceof KeypressEvent) {
keysym = eventLog[1].keysym;
accepted_events = eventLog.splice(0, 2);
}
// If there is a keyup already, the event must be handled now
else if (indexof_keyup(first) !== -1) {
if (keysym) {
first.defaultPrevented = !press_key(keysym);
recentKeysym[first.keyCode] = keysym;
}
return eventLog.shift();
keysym = first.keysym;
accepted_events = eventLog.splice(0, 1);
}
}
// Fire a key press if valid events were found
if (accepted_events.length > 0) {
if (keysym) {
// Fire event
release_simulated_altgr(keysym);
var defaultPrevented = !press_key(keysym);
recentKeysym[first.keyCode] = keysym;
// If a key is pressed while meta is held down, the keyup will
// never be sent in Chrome, so send it now. (bug #108404)
if (guac_keyboard.modifiers.meta && keysym !== 0xFFE7 && keysym !== 0xFFE8)
release_key(keysym);
// Record whether default was prevented
for (var i=0; i<accepted_events.length; i++)
accepted_events[i].defaultPrevented = defaultPrevented;
}
return first;
}
} // end if keydown
// Keyup event
else if (first instanceof KeyupEvent) {
@@ -956,7 +964,7 @@ Guacamole.Keyboard = function(element) {
return eventLog.shift();
}
} // end if keyup
// Ignore any other type of event (keypress by itself is invalid)
else