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update demo to latest keymaster version (fixes FF error)

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1 parent bd7b41e commit a1477f16cb0c1a2609555647493acace6e63f82d @madrobby committed Aug 30, 2011
Showing with 54 additions and 21 deletions.
  1. +54 −21 keymaster.js
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@@ -7,96 +7,129 @@
_handlers = {},
_mods = { 16: false, 18: false, 17: false, 91: false },
_scope = 'all',
+ // modifier keys
_MODIFIERS = {
- shift: 16,
+ '': 16, shift: 16,
option: 18, '': 18, alt: 18,
- ctrl: 17, control: 17,
- command: 91, '': 91 },
+ ctrl: 17, control: 17,
+ command: 91, '': 91
+ },
+ // special keys
_MAP = {
- backspace: 8, tab: 9,
+ backspace: 8, tab: 9, clear: 12,
enter: 13, 'return': 13,
- escape: 27, space: 32,
+ esc: 27, escape: 27, space: 32,
left: 37, up: 38,
- right: 39, down: 40 };
-
+ right: 39, down: 40,
+ del: 46, 'delete': 46,
+ home: 36, end: 35,
+ pageup: 33, pagedown: 34 };
+
+ for(k=1;k<20;k++) _MODIFIERS['f'+k] = 111+k;
+
+ // handle keydown event
function dispatch(event){
- var key, tagName, handler, k,i, hl, hmi, hmil, modifiersMatch;
+ var key, tagName, handler, k, i, modifiersMatch;
tagName = (event.target || event.srcElement).tagName;
key = event.keyCode;
+
+ // if a modifier key, set the key.<modifierkeyname> property to true and return
+ if(key == 93 || key == 224) key = 91; // right command on webkit, command on Gecko
if(key in _mods) {
_mods[key] = true;
+ // 'assignKey' from inside this closure is exported to window.key
for(k in _MODIFIERS) if(_MODIFIERS[k] == key) assignKey[k] = true;
return;
}
+
+ // ignore keypressed in any elements that support keyboard data input
if (tagName == 'INPUT' || tagName == 'SELECT' || tagName == 'TEXTAREA') return;
+
+ // abort if no potentially matching shortcuts found
if (!(key in _handlers)) return;
- for (i = 0, hl = _handlers[key].length; i < hl; i++) {
+
+ // for each potential shortcut
+ for (i = 0; i < _handlers[key].length; i++) {
handler = _handlers[key][i];
+
+ // see if it's in the current scope
if(handler.scope == _scope || handler.scope == 'all'){
- modifiersMatch = (handler.mods.length > 0 && (function(){
- for(hmi = 0, hmil = handler.mods.length; hmi < hmil; hmi++)
- if(!_mods[handler.mods[hmi]])
- return false;
- return true;
- })());
+ // check if modifiers match if any
+ modifiersMatch = handler.mods.length > 0;
+ for(k in _mods)
+ if((!_mods[k] && handler.mods.indexOf(+k) > -1) ||
+ (_mods[k] && handler.mods.indexOf(+k) == -1)) modifiersMatch = false;
+ // call the handler and stop the event if neccessary
if((handler.mods.length == 0 && !_mods[16] && !_mods[18] && !_mods[17] && !_mods[91]) || modifiersMatch){
if(handler.method(event, handler.key, handler.scope)===false){
- if(event.stopPropagation) event.stopPropagation();
- if(event.cancelBubble) event.cancelBubble();
if(event.preventDefault) event.preventDefault();
else event.returnValue = false;
+ if(event.stopPropagation) event.stopPropagation();
+ if(event.cancelBubble) event.cancelBubble = true;
}
}
}
}
};
+ // unset modifier keys on keyup
function clearModifier(event){
var key = event.keyCode, k;
+ if(key == 93 || key == 224) key = 91;
if(key in _mods) {
_mods[key] = false;
for(k in _MODIFIERS) if(_MODIFIERS[k] == key) assignKey[k] = false;
}
};
+ // parse and assign shortcut
function assignKey(key, scope, method){
- var keys, mods, i, mi, kl, ml;
+ var keys, mods, i, mi;
if (method === undefined) {
method = scope;
scope = 'all';
}
key = key.replace(/\s/g,'');
keys = key.split(',');
- for (i = 0, kl = keys.length; i < kl; i++) {
+ // for each shortcut
+ for (i = 0; i < keys.length; i++) {
+ // set modifier keys if any
mods = [];
key = keys[i].split('+');
if(key.length > 1){
mods = key.slice(0,key.length-1);
- for (mi = 0, ml = mods.length; mi < ml; mi++)
+ for (mi = 0; mi < mods.length; mi++)
mods[mi] = _MODIFIERS[mods[mi]];
key = [key[key.length-1]];
}
+ // convert to keycode and...
key = key[0]
key = key.length > 1 ? _MAP[key] : key.toUpperCase().charCodeAt(0);
+ // ...store handler
if (!(key in _handlers)) _handlers[key] = [];
_handlers[key].push({ scope: scope, method: method, key: keys[i], mods: mods });
}
};
+ // initialize key.<modifier> to false
for(k in _MODIFIERS) assignKey[k] = false;
+ // set current scope (default 'all')
function setScope(scope){ _scope = scope || 'all' };
-
+
+ // cross-browser events
function addEvent(object, event, method) {
if (object.addEventListener)
object.addEventListener(event, method, false);
else if(object.attachEvent)
object.attachEvent('on'+event, function(){ method(window.event) });
};
+ // set the handlers globally on document
addEvent(document, 'keydown', dispatch);
addEvent(document, 'keyup', clearModifier);
+ // set window.key and window.key.setScope
global.key = assignKey;
global.key.setScope = setScope;
})(this);

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