fspecii
89 lines
2.1 KiB
JavaScript
Executable File
89 lines
2.1 KiB
JavaScript
Executable File
(function( w, d, PKAE ) {
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'use strict';
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function KeyHandler () {
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var q = this;
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q.keyMap = {}; // holds a map of all the active keys
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q.callbacks = {}; // callbacks for when a key combintation becomes active
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q.singleCallbacks = {}; // callbacks to the 'keypress' event - not required
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q.addCallback = function (callback_name, callback_function, keys) {
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q.callbacks[ callback_name ] = {
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keys : keys,
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callback : callback_function
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};
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};
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q.addSingleCallback = function (callback_name, callback_function, key) {
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q.singleCallbacks[ callback_name ] = {
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key : key,
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callback : callback_function
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};
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};
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q.removeCallback = function ( callback_name ) {
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q.callbacks[ callback_name ] = null;
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};
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d.addEventListener ('keydown', function ( e ) {
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var keyCode = e.keyCode;
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q.keyDown (keyCode, e);
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});
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q.keyDown = function (keyCode, e ) {
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q.keyMap[keyCode] = 1;
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for (var key in q.callbacks) {
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var group = q.callbacks[key];
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if (!group) continue;
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var l = group.keys.length;
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var all_ok = true;
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while (l-- > 0) {
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if (!q.keyMap[group.keys[l]])
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{
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all_ok = false;
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break;
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}
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}
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all_ok && group.callback && group.callback ( keyCode, q.keyMap, e );
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}
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};
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q.keyUp = function ( keyCode ) {
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q.keyMap[keyCode] = 0;
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};
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q.keyPress = function ( keyCode, e ) {
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for (var key in q.singleCallbacks) {
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var group = q.singleCallbacks[key];
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if (!group) continue;
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if (group.key === keyCode)
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group.callback && group.callback ( e );
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}
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};
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d.addEventListener ('keyup', function ( e ) {
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var keyCode = e.keyCode;
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q.keyUp (keyCode);
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});
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d.addEventListener ('keypress', function ( e ) {
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var keyCode = e.keyCode;
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q.keyPress (keyCode, e);
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});
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w.addEventListener ('blur', function ( e ) {
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q.keyMap = {};
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}, false);
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d.addEventListener ('contextmenu', function( e ) {
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e.preventDefault();
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}, false);
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};
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PKAE._deps.keyhandler = KeyHandler;
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})( window, document, PKAudioEditor ); |