oxjs/source/js/Ox.Keyboard.js

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2011-04-23 16:45:50 +00:00
// vim: et:ts=4:sw=4:sts=4:ft=js
2011-04-22 22:03:10 +00:00
/***
Ox.Keyboard
***/
(function() {
var buffer = '',
bufferTime = 0,
bufferTimeout = 1000,
// wrapped in function so it can be collapsed in text editor
keyNames = (function() {
return {
0: 'section',
8: 'backspace',
9: 'tab',
12: 'clear',
13: 'enter',
16: 'shift',
17: 'control',
18: 'alt',
20: 'capslock',
27: 'escape',
32: 'space',
33: 'pageup',
34: 'pagedown',
35: 'end',
36: 'home',
37: 'left',
38: 'up',
39: 'right',
40: 'down',
45: 'insert',
46: 'delete',
47: 'help',
48: '0',
49: '1',
50: '2',
51: '3',
52: '4',
53: '5',
54: '6',
55: '7',
56: '8',
57: '9',
65: 'a',
66: 'b',
67: 'c',
68: 'd',
69: 'e',
70: 'f',
71: 'g',
72: 'h',
73: 'i',
74: 'j',
75: 'k',
76: 'l',
77: 'm',
78: 'n',
79: 'o',
80: 'p',
81: 'q',
82: 'r',
83: 's',
84: 't',
85: 'u',
86: 'v',
87: 'w',
88: 'x',
89: 'y',
90: 'z',
//91: 'meta.left',
//92: 'meta.right',
91: 'meta',
//92: 'meta',
93: 'meta',
96: '0.numpad',
97: '1.numpad',
98: '2.numpad',
99: '3.numpad',
100: '4.numpad',
101: '5.numpad',
102: '6.numpad',
103: '7.numpad',
104: '8.numpad',
105: '9.numpad',
106: 'asterisk.numpad',
107: 'plus.numpad',
109: 'minus.numpad',
108: 'enter.numpad',
110: 'dot.numpad',
111: 'slash.numpad',
112: 'f1',
113: 'f2',
114: 'f3',
115: 'f4',
116: 'f5',
117: 'f6',
118: 'f7',
119: 'f8',
120: 'f9',
121: 'f10',
122: 'f11',
123: 'f12',
124: 'f13',
125: 'f14',
126: 'f15',
127: 'f16',
144: 'numlock',
145: 'scrolllock',
186: 'semicolon',
187: 'equal',
188: 'comma',
189: 'minus',
190: 'dot',
191: 'slash',
192: 'backtick',
219: 'openbracket',
220: 'backslash',
221: 'closebracket',
222: 'quote'
// see dojo, for ex.
};
})(),
modifierNames = {
altKey: 'alt', // mac: option
ctrlKey: 'control',
// metaKey: 'meta', // mac: command
shiftKey: 'shift'
};
Ox.UI.ready(function() {
// fixme: how to do this better?
// in firefox on mac, keypress doesn't fire for up/down
// if the cursor is at the start/end of an input element
// on linux, it doesn't seem to fire if the input element has focus
if ($.browser.mozilla) {
Ox.UI.$document.keypress(keypress);
Ox.UI.$document.keydown(function(event) {
var $element = $('input:focus');
if ($element.length) {
if (
(
keyNames[event.keyCode] == 'up' &&
$element[0].selectionStart + $element[0].selectionEnd == 0
) || (
keyNames[event.keyCode] == 'down' &&
$element[0].selectionStart == $element.val().length &&
$element[0].selectionEnd == $element.val().length
)
) {
keypress(event);
}
}
});
} else {
Ox.UI.$document.keydown(keypress);
}
});
function keypress(event) {
var focused = Ox.Focus.focused(),
key,
keys = [],
//ret = true,
time;
Ox.forEach(modifierNames, function(v, k) {
event[k] && keys.push(v);
});
// avoid pushing modifier twice
if (keyNames[event.keyCode] && keys.indexOf(keyNames[event.keyCode]) == -1) {
keys.push(keyNames[event.keyCode]);
}
key = keys.join('_');
if (key.match(/^[\w\d\-]$|SPACE/)) {
time = Ox.getTime();
if (time - bufferTime > bufferTimeout) {
buffer = '';
}
buffer += key == 'SPACE' ? ' ' : key;
bufferTime = time;
}
focused !== null && Ox.UI.elements[focused].triggerEvent('key_' + key);
if (['down', 'space', 'up'].indexOf(key) > -1 && !Ox.UI.elements[focused].hasClass('OxInput')) {
// prevent chrome from scrolling
return false;
}
/*
stack.forEach(function(v) {
// fixme: we dont get the return value!
ret = Ox.event.trigger(keyboard + Ox.toCamelCase(key) + '.' + v);
return ret;
});
*/
}
})();