94 lines
3.2 KiB
JavaScript
94 lines
3.2 KiB
JavaScript
// vim: et:ts=4:sw=4:sts=4:ft=javascript
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'use strict';
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/*@
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Ox.Keyboard <o> Basic keyboard handler
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@*/
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Ox.Keyboard = (function() {
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var buffer = '', bound = [], resetTimeout, triggerTimeout;
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Ox.UI.ready(function() {
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Ox.$document.keydown(keydown)
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});
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function keydown(event) {
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var focused = Ox.Focus.focused(),
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key,
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keyName = Ox.KEYS[event.keyCode] || '',
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keyNames = keyName ? [keyName] : [],
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keyBasename = keyName.split('.')[0],
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ret = true;
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Ox.forEach(Ox.MODIFIER_KEYS, function(v, k) {
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// avoid pushing modifier twice
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// using event.originalEvent since jquery always sets event.metaKey to event.ctrlKey
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if (event.originalEvent[k] && keyBasename != v) {
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keyNames.splice(-1, 0, v);
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}
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});
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key = keyNames.join('_');
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if (focused === null || !Ox.UI.elements[focused].hasClass('OxInput')) {
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bound.forEach(function(id) {
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Ox.UI.elements[id].triggerEvent('key_' + key);
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});
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}
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if (focused !== null && bound.indexOf(focused) == -1) {
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Ox.UI.elements[focused].triggerEvent('key_' + key);
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// prevent Chrome from scrolling, or going back in history
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if (
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[
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'backspace', 'down', 'left', 'right', 'space', 'up'
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].indexOf(key) > -1
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&& !Ox.UI.elements[focused].hasClass('OxInput')
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&& !Ox.UI.elements[focused].hasClass('OxAutocompleteMenu')
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) {
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ret = false;
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}
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// prevent cursor in input field from moving to start or end
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if (
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['down', 'up'].indexOf(key) > -1
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&& Ox.UI.elements[focused].hasClass('OxAutocompleteMenu')
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) {
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ret = false;
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}
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}
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if (/^[\w\d](\.numpad)?$|^space$/.test(key)) {
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// don't register leading spaces or trailing double spaces
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if (!(keyName == 'space' && (buffer == '' || / $/.test(buffer)))) {
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buffer += keyName == 'space' ? ' ' : keyBasename;
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// clear the trigger timeout only if the key went into the buffer
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clearTimeout(triggerTimeout);
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triggerTimeout = setTimeout(function() {
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focused !== null && Ox.UI.elements[focused].triggerEvent('keys', {
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keys: buffer
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});
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}, 25);
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// fixme: used to be 250, but seemed too much.
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// if it stays at 25, we may not need a timeout at all
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}
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}
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// clear the reset timeout even if the key didn't go into the buffer
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clearTimeout(resetTimeout);
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resetTimeout = setTimeout(function() {
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buffer = '';
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}, 1000);
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return ret;
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}
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return {
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bind: function(id) {
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var index = bound.indexOf(id);
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index == -1 && bound.push(id);
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},
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unbind: function(id) {
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var index = bound.indexOf(id);
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index > -1 && bound.splice(index, 1);
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}
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};
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})();
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