186 lines
3.9 KiB
JavaScript
186 lines
3.9 KiB
JavaScript
/**
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* http://www.openjs.com/scripts/events/keyboard_shortcuts/
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* Version : 2.01.B
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* By Binny V A
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* License : BSD
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*/
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shortcut = {
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'all_shortcuts':{},
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'add': function(shortcut_combination,callback,opt) {
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var default_options = {
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'type':'keydown',
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'propagate':false,
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'disable_in_input':false,
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'target':document,
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'keycode':false
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}
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if(!opt) opt = default_options;
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else {
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for(var dfo in default_options) {
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if(typeof opt[dfo] == 'undefined') opt[dfo] = default_options[dfo];
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}
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}
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var ele = opt.target;
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if(typeof opt.target == 'string') ele = document.getElementById(opt.target);
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var ths = this;
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shortcut_combination = shortcut_combination.toLowerCase();
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var func = function(e) {
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e = e || window.event;
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if(opt['disable_in_input']) {
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var element;
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if(e.target) element=e.target;
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else if(e.srcElement) element=e.srcElement;
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if(element.nodeType==3) element=element.parentNode;
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if(element.tagName == 'INPUT' || element.tagName == 'TEXTAREA') return;
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}
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if (e.keyCode) code = e.keyCode;
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else if (e.which) code = e.which;
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var character = String.fromCharCode(code).toLowerCase();
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if(code == 188) character=",";
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if(code == 190) character=".";
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var keys = shortcut_combination.split("+");
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var kp = 0;
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var shift_nums = {
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"`":"~",
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"1":"!",
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"2":"@",
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"3":"#",
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"4":"$",
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"5":"%",
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"6":"^",
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"7":"&",
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"8":"*",
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"9":"(",
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"0":")",
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"-":"_",
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"=":"+",
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";":":",
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"'":"\"",
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",":"<",
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".":">",
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"/":"?",
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"\\":"|"
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}
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var special_keys = {
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'esc':27,
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'escape':27,
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'tab':9,
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'space':32,
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'return':13,
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'enter':13,
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'backspace':8,
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'scrolllock':145,
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'scroll_lock':145,
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'scroll':145,
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'capslock':20,
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'caps_lock':20,
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'caps':20,
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'numlock':144,
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'num_lock':144,
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'num':144,
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'pause':19,
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'break':19,
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'insert':45,
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'home':36,
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'delete':46,
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'end':35,
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'pageup':33,
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'page_up':33,
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'pu':33,
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'pagedown':34,
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'page_down':34,
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'pd':34,
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'left':37,
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'up':38,
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'right':39,
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'down':40,
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'f1':112,
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'f2':113,
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'f3':114,
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'f4':115,
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'f5':116,
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'f6':117,
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'f7':118,
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'f8':119,
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'f9':120,
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'f10':121,
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'f11':122,
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'f12':123
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}
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var modifiers = {
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shift: { wanted:false, pressed:false},
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ctrl : { wanted:false, pressed:false},
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alt : { wanted:false, pressed:false},
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meta : { wanted:false, pressed:false}
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};
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if(e.ctrlKey)modifiers.ctrl.pressed = true;
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if(e.shiftKey)modifiers.shift.pressed = true;
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if(e.altKey)modifiers.alt.pressed = true;
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if(e.metaKey) modifiers.meta.pressed = true;
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for(var i=0; k=keys[i],i<keys.length; i++) {
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//Modifiers
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if(k == 'ctrl' || k == 'control') {
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kp++;
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modifiers.ctrl.wanted = true;
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} else if(k == 'shift') {
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kp++;
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modifiers.shift.wanted = true;
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} else if(k == 'alt') {
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kp++;
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modifiers.alt.wanted = true;
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} else if(k == 'meta') {
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kp++;
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modifiers.meta.wanted = true;
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} else if(k.length > 1) {
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if(special_keys[k] == code) kp++;
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} else if(opt['keycode']) {
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if(opt['keycode'] == code) kp++;
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} else {
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if(character == k) kp++;
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else {
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if(shift_nums[character] && e.shiftKey) {
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character = shift_nums[character];
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if(character == k) kp++;
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}
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}
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}
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}
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if(kp == keys.length &&
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modifiers.ctrl.pressed == modifiers.ctrl.wanted &&
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modifiers.shift.pressed == modifiers.shift.wanted &&
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modifiers.alt.pressed == modifiers.alt.wanted &&
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modifiers.meta.pressed == modifiers.meta.wanted) {
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callback(e);
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if(!opt['propagate']) {
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e.cancelBubble = true;
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e.returnValue = false;
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if (e.stopPropagation) {
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e.stopPropagation();
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e.preventDefault();
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}
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return false;
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}
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}
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}
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this.all_shortcuts[shortcut_combination] = {
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'callback':func,
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'target':ele,
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'event': opt['type']
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};
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if(ele.addEventListener) ele.addEventListener(opt['type'], func, false);
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else if(ele.attachEvent) ele.attachEvent('on'+opt['type'], func);
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else ele['on'+opt['type']] = func;
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},
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'remove':function(shortcut_combination) {
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shortcut_combination = shortcut_combination.toLowerCase();
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var binding = this.all_shortcuts[shortcut_combination];
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delete(this.all_shortcuts[shortcut_combination])
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if(!binding) return;
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var type = binding['event'];
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var ele = binding['target'];
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var callback = binding['callback'];
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if(ele.detachEvent) ele.detachEvent('on'+type, callback);
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else if(ele.removeEventListener) ele.removeEventListener(type, callback, false);
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else ele['on'+type] = false;
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}
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} |