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60 lines
1.8 KiB
60 lines
1.8 KiB
define(function () {
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'use strict';
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var shortcut = {};
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shortcut._allShortcuts = [];
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shortcut.add = function (modifiersString, key, callback) {
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// Parse the modifiers. For example "Ctrl+Alt" will become
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// {'ctrlKey': true, 'altKey': true, 'shiftKey': false}
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var modifiersList = modifiersString.toLowerCase().split("+");
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var modifiers = {
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'ctrlKey': modifiersList.indexOf('ctrl') >= 0,
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'altKey': modifiersList.indexOf('alt') >= 0,
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'shiftKey': modifiersList.indexOf('shift') >= 0
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};
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this._allShortcuts.push({
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'modifiers': modifiers,
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'key': key.toLowerCase(),
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'callback': callback
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});
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};
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document.onkeypress = function (e) {
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e = e || window.event;
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var modifiers = {
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'ctrlKey': e.ctrlKey,
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'altKey': e.altKey,
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'shiftKey': e.shiftKey
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};
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// Obtain the key
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var charCode;
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if (typeof e.which == "number") {
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charCode = e.which;
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} else {
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charCode = e.keyCode;
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}
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var key = String.fromCharCode(charCode).toLowerCase();
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// Search for a matching shortcut
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for (var i = 0; i < shortcut._allShortcuts.length; i += 1) {
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var currentShortcut = shortcut._allShortcuts[i];
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var match = currentShortcut.key == key &&
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currentShortcut.modifiers.ctrlKey == modifiers.ctrlKey &&
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currentShortcut.modifiers.altKey == modifiers.altKey &&
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currentShortcut.modifiers.shiftKey == modifiers.shiftKey;
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if (match) {
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currentShortcut.callback();
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return;
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}
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}
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};
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return shortcut;
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});
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