From ae0e6d987781d2fbf225611e2f8df37380a2bbcd Mon Sep 17 00:00:00 2001 From: yo mama Date: Thu, 12 Feb 2015 18:29:27 -0800 Subject: first --- js/shortcuts.js | 223 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 223 insertions(+) create mode 100644 js/shortcuts.js (limited to 'js/shortcuts.js') diff --git a/js/shortcuts.js b/js/shortcuts.js new file mode 100644 index 0000000..0d8b804 --- /dev/null +++ b/js/shortcuts.js @@ -0,0 +1,223 @@ +/** + * http://www.openjs.com/scripts/events/keyboard_shortcuts/ + * Version : 2.01.B + * By Binny V A + * License : BSD + */ +shortcut = { + 'all_shortcuts':{},//All the shortcuts are stored in this array + 'add': function(shortcut_combination,callback,opt) { + //Provide a set of default options + var default_options = { + 'type':'keydown', + 'propagate':false, + 'disable_in_input':false, + 'target':document, + 'keycode':false + } + if(!opt) opt = default_options; + else { + for(var dfo in default_options) { + if(typeof opt[dfo] == 'undefined') opt[dfo] = default_options[dfo]; + } + } + + var ele = opt.target; + if(typeof opt.target == 'string') ele = document.getElementById(opt.target); + var ths = this; + shortcut_combination = shortcut_combination.toLowerCase(); + + //The function to be called at keypress + var func = function(e) { + e = e || window.event; + + if(opt['disable_in_input']) { //Don't enable shortcut keys in Input, Textarea fields + var element; + if(e.target) element=e.target; + else if(e.srcElement) element=e.srcElement; + if(element.nodeType==3) element=element.parentNode; + + if(element.tagName == 'INPUT' || element.tagName == 'TEXTAREA') return; + } + + //Find Which key is pressed + if (e.keyCode) code = e.keyCode; + else if (e.which) code = e.which; + var character = String.fromCharCode(code).toLowerCase(); + + if(code == 188) character=","; //If the user presses , when the type is onkeydown + if(code == 190) character="."; //If the user presses , when the type is onkeydown + + var keys = shortcut_combination.split("+"); + //Key Pressed - counts the number of valid keypresses - if it is same as the number of keys, the shortcut function is invoked + var kp = 0; + + //Work around for stupid Shift key bug created by using lowercase - as a result the shift+num combination was broken + var shift_nums = { + "`":"~", + "1":"!", + "2":"@", + "3":"#", + "4":"$", + "5":"%", + "6":"^", + "7":"&", + "8":"*", + "9":"(", + "0":")", + "-":"_", + "=":"+", + ";":":", + "'":"\"", + ",":"<", + ".":">", + "/":"?", + "\\":"|" + } + //Special Keys - and their codes + var special_keys = { + 'esc':27, + 'escape':27, + 'tab':9, + 'space':32, + 'return':13, + 'enter':13, + 'backspace':8, + + 'scrolllock':145, + 'scroll_lock':145, + 'scroll':145, + 'capslock':20, + 'caps_lock':20, + 'caps':20, + 'numlock':144, + 'num_lock':144, + 'num':144, + + 'pause':19, + 'break':19, + + 'insert':45, + 'home':36, + 'delete':46, + 'end':35, + + 'pageup':33, + 'page_up':33, + 'pu':33, + + 'pagedown':34, + 'page_down':34, + 'pd':34, + + 'left':37, + 'up':38, + 'right':39, + 'down':40, + + 'f1':112, + 'f2':113, + 'f3':114, + 'f4':115, + 'f5':116, + 'f6':117, + 'f7':118, + 'f8':119, + 'f9':120, + 'f10':121, + 'f11':122, + 'f12':123 + } + + var modifiers = { + shift: { wanted:false, pressed:false}, + ctrl : { wanted:false, pressed:false}, + alt : { wanted:false, pressed:false}, + meta : { wanted:false, pressed:false} //Meta is Mac specific + }; + + if(e.ctrlKey) modifiers.ctrl.pressed = true; + if(e.shiftKey) modifiers.shift.pressed = true; + if(e.altKey) modifiers.alt.pressed = true; + if(e.metaKey) modifiers.meta.pressed = true; + + for(var i=0; k=keys[i],i 1) { //If it is a special key + if(special_keys[k] == code) kp++; + + } else if(opt['keycode']) { + if(opt['keycode'] == code) kp++; + + } else { //The special keys did not match + if(character == k) kp++; + else { + if(shift_nums[character] && e.shiftKey) { //Stupid Shift key bug created by using lowercase + character = shift_nums[character]; + if(character == k) kp++; + } + } + } + } + + if(kp == keys.length && + modifiers.ctrl.pressed == modifiers.ctrl.wanted && + modifiers.shift.pressed == modifiers.shift.wanted && + modifiers.alt.pressed == modifiers.alt.wanted && + modifiers.meta.pressed == modifiers.meta.wanted) { + callback(e); + + if(!opt['propagate']) { //Stop the event + //e.cancelBubble is supported by IE - this will kill the bubbling process. + e.cancelBubble = true; + e.returnValue = false; + + //e.stopPropagation works in Firefox. + if (e.stopPropagation) { + e.stopPropagation(); + e.preventDefault(); + } + return false; + } + } + } + this.all_shortcuts[shortcut_combination] = { + 'callback':func, + 'target':ele, + 'event': opt['type'] + }; + //Attach the function with the event + if(ele.addEventListener) ele.addEventListener(opt['type'], func, false); + else if(ele.attachEvent) ele.attachEvent('on'+opt['type'], func); + else ele['on'+opt['type']] = func; + }, + + //Remove the shortcut - just specify the shortcut and I will remove the binding + 'remove':function(shortcut_combination) { + shortcut_combination = shortcut_combination.toLowerCase(); + var binding = this.all_shortcuts[shortcut_combination]; + delete(this.all_shortcuts[shortcut_combination]) + if(!binding) return; + var type = binding['event']; + var ele = binding['target']; + var callback = binding['callback']; + + if(ele.detachEvent) ele.detachEvent('on'+type, callback); + else if(ele.removeEventListener) ele.removeEventListener(type, callback, false); + else ele['on'+type] = false; + } +} -- cgit v1.2.3-70-g09d2