mirror of
https://github.com/flynx/ImageGrid.git
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1114 lines
27 KiB
JavaScript
Executable File
1114 lines
27 KiB
JavaScript
Executable File
/**********************************************************************
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*
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*
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*
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**********************************************************************/
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((typeof define)[0]=='u'?function(f){module.exports=f(require)}:define)
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(function(require){ var module={} // make module AMD/node compatible...
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/*********************************************************************/
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var object = require('lib/object')
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/*********************************************************************/
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var MODIFIERS =
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module.MODIFIERS = [ 'ctrl', 'meta', 'alt', 'shift' ]
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var KEY_SEPARATORS =
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module.KEY_SEPARATORS = ['+', '-', '_']
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// Neither SPECIAL_KEYS nor KEY_CODES are meant for direct access, use
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// toKeyName(<code>) and toKeyCode(<name>) for a more uniform access.
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//
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// NOTE: these are un-shifted ASCII key names rather than actual key
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// code translations.
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// NOTE: ASCII letters (capital) are not present because they actually
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// match their key codes and are accessible via:
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// String.fromCharCode(<code>) or <letter>.charCodeAt(0)
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// NOTE: the lower case letters are accessible by adding 32 to the
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// capital key code.
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// NOTE: don't understand why am I the one who has to write this...
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var SPECIAL_KEYS =
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module.SPECIAL_KEYS = {
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// Special Keys...
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9: 'Tab', 33: 'PgUp', 45: 'Ins',
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13: 'Enter', 34: 'PgDown', 46: 'Del',
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16: 'Shift', 35: 'End', 8: 'Backspace',
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17: 'Ctrl', 36: 'Home', 91: 'Win',
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18: 'Alt', 37: 'Left', 93: 'Menu',
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20: 'Caps Lock',38: 'Up',
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27: 'Esc', 39: 'Right',
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32: 'Space', 40: 'Down',
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// Function Keys...
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112: 'F1', 116: 'F5', 120: 'F9',
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113: 'F2', 117: 'F6', 121: 'F10',
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114: 'F3', 118: 'F7', 122: 'F11',
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115: 'F4', 119: 'F8', 123: 'F12',
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// Number row..
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// NOTE: to avoid conflicts with keys that have a code the same as
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// the value of a number key...
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// Ex:
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// 'Backspace' (8) vs. '8' (56)
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// 'Tab' (9) vs. '9' (57)
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// ...all of the numbers start with a '#'
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// this is a problem due to JS coercing the types to string
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// on object attr access.
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// Ex:
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// o = {1: 2}
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// o[1] == o['1'] == true
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49: '#1', 50: '#2', 51: '#3', 52: '#4', 53: '#5',
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54: '#6', 55: '#7', 56: '#8', 57: '#9', 48: '#0',
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// Punctuation...
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// top row...
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192: '`', /* Numbers */ 189: '-', 187: '=',
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// right side of keyboard...
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219: '[', 221: ']', 220: '\\',
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186: ';', 222: '\'',
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188: ',', 190: '.', 191: '/',
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}
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var SHIFT_KEYS =
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module.SHIFT_KEYS = {
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'`': '~', '-': '_', '=':'+',
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'#1': '!', '#2': '@', '#3': '#', '#4': '$', '#5': '%',
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'#6':'^', '#7':'&', '#8': '*', '#9': '(', '#0': ')',
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'[': '{', ']': '}', '\\': '|',
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';': ':', '\'': '"',
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',': '<', '.': '>', '/': '?'
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}
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var UNSHIFT_KEYS =
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module.UNSHIFT_KEYS = {}
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for(var k in SHIFT_KEYS){
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UNSHIFT_KEYS[SHIFT_KEYS[k]] = k
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}
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// build a reverse map of SPECIAL_KEYS
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var KEY_CODES =
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module.KEY_CODES = {}
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for(var k in SPECIAL_KEYS){
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KEY_CODES[SPECIAL_KEYS[k]] = k
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}
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// This is used to identify and correct key notation...
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// NOTE: the keys here are intentionally lowercase...
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var SPECIAL_KEY_ALTERNATIVE_TITLES = {
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1: '#1', 2: '#2', 3: '#3', 4: '#4', 5: '#5',
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6: '#6', 7: '#7', 8: '#8', 9: '#9', 0: '#0',
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ctl: 'Ctrl', control: 'Ctrl',
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'capslock': 'Caps Lock',
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'page up': 'PgUp', 'pageup': 'PgUp',
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'page down': 'PgDown', 'pagedown': 'PgDown',
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insert: 'Ins',
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delete: 'Del',
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'bkspace' : 'Backspace', 'back space' : 'Backspace',
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windows: 'Win',
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}
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var SPECIAL_KEYS_DICT = {}
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for(var k in SPECIAL_KEYS){
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SPECIAL_KEYS_DICT[SPECIAL_KEYS[k].toLowerCase()] = SPECIAL_KEYS[k]
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}
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/*********************************************************************/
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// Documentation wrapper...
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var doc =
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module.doc =
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function doc(text, func){
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func = !func ? function(){return true}: func
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func.doc = text
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return func
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}
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// Parse action call format...
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//
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// supported format:
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// <actio-name>[!][: <args>][-- <doc>]
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//
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// <args> can contain space seporated:
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// - numbers
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// - strings
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// - non-nested arrays or objects
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//
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// XXX should this be here???
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// XXX add support for suffix to return false / stop_propagation...
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// XXX should this handle calls???
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// i.e. have .call(..) / .apply(..) methods???
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var parseActionCall =
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module.parseActionCall =
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function parseActionCall(txt){
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// split off the doc...
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var c = txt.split('--')
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var doc = (c[1] || '').trim()
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// the actual code...
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c = c[0].split(':')
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// action and no default flag...
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var action = c[0].trim()
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var no_default = action.slice(-1) == '!'
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action = no_default ? action.slice(0, -1) : action
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// parse arguments...
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var args = JSON.parse('['+(
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((c[1] || '')
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.match(/"[^"]*"|'[^']*'|\{[^\}]*\}|\[[^\]]*\]|\d+|\d+\.\d*|null/gm)
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|| [])
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.join(','))+']')
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return {
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action: action,
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arguments: args,
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doc: doc,
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no_default: no_default,
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stop_propagation: false,
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}
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}
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//---------------------------------------------------------------------
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// Helpers and utility functions...
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// Form standard key string from keyboard event...
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//
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// Format:
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// "[ctrl+][meta+][alt+][shift+]<key>"
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//
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// <key> - string returned by code2key(..)
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//
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var event2key =
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module.event2key =
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function event2key(evt){
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evt = evt || event
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var key = []
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evt.ctrlKey && key.push('ctrl')
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evt.altKey && key.push('alt')
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evt.metaKey && key.push('meta')
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evt.shiftKey && key.push('shift')
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var k = code2key(evt.keyCode)
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// add the key if it's not already in, this can happen if we just
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// pressed a modifier key...
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key.indexOf(k.toLowerCase()) < 0 && key.push(k)
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return key
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}
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// Get key code from key name...
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var key2code =
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module.key2code =
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function key2code(key){
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return key in KEY_CODES ? KEY_CODES[key]
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: key.length > 1 ? null
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: key.charCodeAt(0) }
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// Get key name from key code...
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var code2key =
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module.code2key =
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function code2key(code){
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var name = String.fromCharCode(code)
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return code in SPECIAL_KEYS ? SPECIAL_KEYS[code]
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: name != '' ? name
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: null }
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// Check if string is a standard key string...
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var isKey =
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module.isKey =
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function isKey(key){
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if(!key || key.length == 0 || key.trim() == ''){
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return false
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}
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var modifiers = MODIFIERS
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var mod = normalizeKey(splitKey(key))
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var k = mod.pop()
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// key is either a key code or a valid key name...
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return (!!parseInt(k) || key2code(k) != null)
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// mod must be a subset of modifiers...
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&& mod.filter(function(m){ return modifiers.indexOf(m) < 0 }).length == 0
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}
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// Split key...
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//
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// NOTE: if this gets an array, it will get returned as-is...
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// NOTE: no checks are made on the key, use isKey(..) in conjunction
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// with normalizeKey(..) for checking...
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var splitKey =
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module.splitKey =
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function splitKey(key){
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var sep = KEY_SEPARATORS
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return key instanceof Array ? key
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: typeof(key) == typeof(123) ? [key]
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: key
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.split(RegExp('['
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+sep.join('\\')
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+']'))
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.concat(sep.indexOf(key.slice(-1)) >= 0 ? key.slice(-1) : [])
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.filter(function(c){ return c != '' }) }
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var joinKey =
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module.joinKey =
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function joinKey(key){
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return key instanceof Array ?
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key.join(KEY_SEPARATORS[0] || '+')
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: key }
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// Normalize key string/array...
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//
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// NOTE: this will not check if a key is a key use isKey(..) for that.
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var normalizeKey =
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module.normalizeKey =
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function normalizeKey(key){
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var output = key instanceof Array ? 'array' : 'string'
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var modifiers = MODIFIERS
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// special case: got a number...
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if(typeof(key) == typeof(123)){
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return code2key(key)
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}
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// sort modifiers via .modifiers and keep the key last...
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key = splitKey(key)
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.slice()
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.sort(function(a, b){
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a = modifiers.indexOf(a.toLowerCase())
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b = modifiers.indexOf(b.toLowerCase())
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return a >= 0 && b >= 0 ? a - b
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: a < 0 ? 1
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: -1 })
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var k = key.pop()
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k = parseInt(k) ? code2key(parseInt(k)) : k
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if(!k){
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return k
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}
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// get the propper name...
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k = SPECIAL_KEY_ALTERNATIVE_TITLES[k.toLowerCase()] || k
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k = SPECIAL_KEYS_DICT[k.toLowerCase()] || k
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k = modifiers.indexOf(k.toLowerCase()) >= 0 ?
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k.toLowerCase()
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: k.capitalize()
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key.push(k)
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key = key.unique()
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return output == 'array' ?
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key
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: joinKey(key)
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}
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// Get shifted key if available...
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//
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// Examples:
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// - '{' -> 'shift+['
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// - ')' -> 'shift+#0'
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var shifted =
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module.shifted =
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function shifted(key){
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var output = key instanceof Array ? 'array' : 'string'
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key = normalizeKey(splitKey(key)).slice()
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var k = key.pop()
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var s = (key.indexOf('shift') >= 0 ?
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SHIFT_KEYS[k]
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: UNSHIFT_KEYS[k])
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|| null
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var res = s == null ? key
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: (key.indexOf('shift') >= 0 ?
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key.filter(function(k){ return k != 'shift' })
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: key.concat(['shift']))
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res.push(s)
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return s == null ? null
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: output == 'string' ?
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joinKey(res)
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: res
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}
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/*********************************************************************/
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// Generic keyboard handler...
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//
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// Key binding format:
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// {
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// <section-title>: {
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// doc: <section-doc>,
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//
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// // list of keys to drop after this section is done.
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// //
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// // Setting this to '*' will drop all keys...
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// //
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// // NOTE: these keys will be handled in current section.
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// // NOTE: these keys will not get propagated to the next
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// // matching section...
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// // NOTE: it is possible to override this and explicitly pass
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// // a key to the next section via 'NEXT' (see below).
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// drop: [ <key>, ... ] | '*',
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//
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// // Key mapped to action...
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// //
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// // NOTE: the system poses no restrictions on action format,
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// // but it is recommended to stick to strings or use the
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// // doc(..) wrapper...
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// <key>: <action>,
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//
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// // Key mapped to an alias...
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// //
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// // An alias is any string that is also a key in bindings, it
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// // can be just a string or a key, when matching the string of
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// // aliases will be resolved till either an action (non-alias)
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// // is found or a loop is detected.
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// //
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// // NOTE: in case of a loop, nothing will get called...
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// <key>: <alias> | <key>,
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//
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// // Alias-action mapping...
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// <alias>: <action>,
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//
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// // Explicitly drop key...
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// //
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// // NOTE: this is similar in effect to .drop
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// <key>: 'DROP',
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//
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// // Explicitly pass key to next section...
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// //
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// // This can be useful when it is needed to drop all keys
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// // except for a small sub-group, this can be dune by setting
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// // .drop to '*' (drop all) and explicitly setting the keys to
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// // be propagated to 'NEXT'.
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// //
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// // NOTE: his takes precedence over .drop
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// <key>: 'NEXT',
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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 KeyboardClassPrototype = {
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service_fields: ['doc', 'drop'],
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event2key: event2key,
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key2code: key2code,
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code2key: code2key,
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isKey: isKey,
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splitKey: splitKey,
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joinKey: joinKey,
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normalizeKey: normalizeKey,
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shifted: shifted
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}
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var KeyboardPrototype = {
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//service_fields: ['doc', 'drop'],
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special_handlers: {
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DROP: 'drop key',
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NEXT: 'handle key in next section',
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},
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// Format:
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// {
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// <mode>: {
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// doc: <doc>,
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// drop: [ <key>, ... ] | '*',
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//
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// <alias>: <handler>,
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//
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// <key>: <handler>,
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// <key>: <alias>,
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// },
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// ...
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// }
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//
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// Reserved special handlers:
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// - DROP - drop checking of key
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// NOTE: this will prevent handling next sections
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// for this key.
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// - NEXT - force check next section, this has priority
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// over .drop
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//
|
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// NOTE: if .__keyboard is set to a function, it will be used both as
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// a getter and as a setter via the .keyboard prop, to overwrite
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// write to .__keyboard directly...
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__keyboard: null,
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get keyboard(){
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return this.__keyboard instanceof Function ?
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this.__keyboard()
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: this.__keyboard },
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set keyboard(value){
|
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if(this.__keyboard instanceof Function){
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this.__keyboard(value)
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} else {
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this.__keyboard = value
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}
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},
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|
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// XXX is this needed???
|
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//context: null,
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|
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// utils...
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event2key: KeyboardClassPrototype.event2key,
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key2code: KeyboardClassPrototype.key2code,
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code2key: KeyboardClassPrototype.code2key,
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shifted: KeyboardClassPrototype.shifted,
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splitKey: KeyboardClassPrototype.splitKey,
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joinKey: KeyboardClassPrototype.joinKey,
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normalizeKey: KeyboardClassPrototype.normalizeKey,
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isKey: KeyboardClassPrototype.isKey,
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|
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//isModeApplicable: function(mode, keyboard, context){ return true },
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|
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// XXX merge configs...
|
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// - need to match and order groups (use 1'st as reference)...
|
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// - need to create new set w/o changing the originals...
|
|
merge: function(){
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},
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|
|
|
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// Sort modes...
|
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//
|
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// Sort via cmp function...
|
|
// .sortModes(func)
|
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// -> this
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//
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// Sort to the same order as list...
|
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// .sortModes(list)
|
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// -> this
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//
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//
|
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// NOTE: calling this with no arguments will have no effect.
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//
|
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// XXX should this update the kb in-place???
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sortModes: function(cmp){
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var ordered = {}
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var bindings = this.keyboard
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|
|
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if(cmp == null){
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return
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}
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|
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cmp = cmp instanceof Function ?
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Object.keys(bindings).sort(cmp)
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: cmp
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.concat(Object.keys(bindings))
|
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.unique()
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cmp
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.forEach(function(mode){
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ordered[mode] = bindings[mode]
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})
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|
|
// reorder only if we moved all the modes...
|
|
if(Object.keys(bindings).length == Object.keys(ordered).length){
|
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this.keyboard = ordered
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}
|
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|
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return this
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},
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|
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// Get keys for handler...
|
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//
|
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// List all handlers...
|
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// .keys()
|
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// .keys('*')
|
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// -> keys
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//
|
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// List keys for handler...
|
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// .keys(handler)
|
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// -> keys
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//
|
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// List keys for given handlers...
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// .keys(handler, ...)
|
|
// .keys([handler, ...])
|
|
// -> keys
|
|
//
|
|
// List keys for handlers that pass the func predicate...
|
|
// .keys(func)
|
|
// -> keys
|
|
//
|
|
//
|
|
// Format:
|
|
// {
|
|
// <mode>: {
|
|
// <handler>: [ <key>, ... ],
|
|
// ...
|
|
// },
|
|
// ...
|
|
// }
|
|
//
|
|
//
|
|
// NOTE: this will also return non-key aliases...
|
|
// NOTE: to match several compatible handlers, pass a list of handlers,
|
|
// the result for each will be merged into one common list.
|
|
keys: function(handler){
|
|
var that = this
|
|
var res = {}
|
|
var keyboard = this.keyboard
|
|
var key_separators = KEY_SEPARATORS
|
|
var service_fields = this.service_fields
|
|
|| this.constructor.service_fields
|
|
|
|
handler = arguments.length > 1 ? [].slice.call(arguments)
|
|
: handler == null ? '*'
|
|
: handler == '*' || handler instanceof Function ? handler
|
|
: handler instanceof Array ? handler
|
|
: [handler]
|
|
|
|
var walkAliases = function(res, rev, bindings, key, mod){
|
|
mod = mod || []
|
|
if(key in rev){
|
|
rev[key].forEach(function(k){
|
|
k = that.normalizeKey(
|
|
that.joinKey(mod
|
|
.concat(that.splitKey(k))
|
|
.unique()))
|
|
res.indexOf(k) < 0
|
|
&& res.push(k)
|
|
&& walkAliases(res, rev, bindings, k, mod)
|
|
})
|
|
}
|
|
}
|
|
|
|
Object.keys(keyboard).forEach(function(mode){
|
|
var bindings = keyboard[mode]
|
|
|
|
// build a reverse index...
|
|
var rev = {}
|
|
// NOTE: this will not work for handlers that are not strings
|
|
// and have no .doc...
|
|
Object.keys(bindings)
|
|
.filter(function(key){
|
|
return service_fields.indexOf(key) < 0 })
|
|
.forEach(function(key){
|
|
var h = bindings[key]
|
|
h = typeof(h) == typeof('str') ? h
|
|
: (h.doc || h.name)
|
|
rev[h] = (rev[h] || [])
|
|
.concat((rev[bindings[key]] || []).concat([key]))
|
|
.unique()
|
|
})
|
|
|
|
var seen = []
|
|
var handlers = handler == '*' ? Object.keys(rev)
|
|
: handler instanceof Function ?
|
|
Object.keys(rev)
|
|
.filter(handler)
|
|
: handler
|
|
|
|
handlers
|
|
.forEach(function(h){
|
|
var keys = (rev[h] || []).map(that.normalizeKey.bind(that))
|
|
|
|
// find all reachable keys from the ones we just found in reverse...
|
|
keys.slice()
|
|
.filter(function(key){ return seen.indexOf(key) < 0 })
|
|
.forEach(function(key){
|
|
// direct aliases...
|
|
walkAliases(keys, rev, bindings, key)
|
|
|
|
var mod = that.splitKey(key)
|
|
var k = mod.pop()
|
|
|
|
// aliases with modifiers...
|
|
k != key
|
|
&& walkAliases(keys, rev, bindings, k, mod)
|
|
|
|
seen.push(seen)
|
|
})
|
|
|
|
if(keys.length > 0){
|
|
var m = res[mode] = res[mode] || {}
|
|
m[h] = keys
|
|
}
|
|
})
|
|
})
|
|
|
|
return res
|
|
},
|
|
|
|
// Get/set/unset handler for key...
|
|
//
|
|
// In general if handler is not passed this will get the handlers,
|
|
// if a handler is given this will set the handler, if the passed
|
|
// handler is either null or '' then it will be unbound.
|
|
//
|
|
// Get handler for key in all modes...
|
|
// .handler(key)
|
|
// .handler('*', key)
|
|
// -> key-spec
|
|
//
|
|
// Get handlers for key in applicable modes...
|
|
// .handler('?', key)
|
|
// .handler('test', key)
|
|
// -> key-spec
|
|
//
|
|
// Get handler for key in a specific mode...
|
|
// .handler(mode, key)
|
|
// -> key-spec
|
|
//
|
|
// Get handler for key in a specific list of modes...
|
|
// .handler([mode, ..], key)
|
|
// -> key-spec
|
|
//
|
|
//
|
|
// Bind handler to key in specific mode...
|
|
// .handler(mode, key, handler)
|
|
// -> this
|
|
//
|
|
// Bind handler to key in all modes...
|
|
// .handler('*', key, handler)
|
|
// -> this
|
|
//
|
|
// Bind handler to key in applicable modes...
|
|
// .handler('?', key, handler)
|
|
// .handler('test', key, handler)
|
|
// -> this
|
|
//
|
|
// Bind handler to key in a specific list of modes...
|
|
// .handler([mode, ..], key, handler)
|
|
// -> this
|
|
//
|
|
//
|
|
// Unbind handler from key in specific mode...
|
|
// .handler(mode, key, null)
|
|
// .handler(mode, key, '')
|
|
// -> this
|
|
//
|
|
// Unbind handler from key in all modes...
|
|
// .handler('*', key, null)
|
|
// .handler('*', key, '')
|
|
// -> this
|
|
//
|
|
// Unbind handler from key in applicable modes...
|
|
// .handler('?', key, null)
|
|
// .handler('?', key, '')
|
|
// .handler('test', key, null)
|
|
// .handler('test', key, '')
|
|
// -> this
|
|
//
|
|
// Unbind handler from key in a specific list of modes...
|
|
// .handler([mode, ..], key, null)
|
|
// .handler([mode, ..], key, '')
|
|
// -> this
|
|
//
|
|
//
|
|
// Format:
|
|
// {
|
|
// <mode>: <handler>,
|
|
// ...
|
|
// }
|
|
//
|
|
//
|
|
// Search order:
|
|
// - search for full key
|
|
// - search for shifted key if applicable
|
|
// - search for key without modifiers
|
|
// - if an alias is found it is first checked with and then
|
|
// without modifiers
|
|
// - search for key code without modifiers
|
|
// - if an alias is found it is first checked with and then
|
|
// without modifiers
|
|
handler: function(mode, key, handler){
|
|
var that = this
|
|
var keyboard = this.keyboard
|
|
var key_separators = KEY_SEPARATORS
|
|
|
|
if(mode == null){
|
|
return null
|
|
}
|
|
if(key == null && this.isKey(mode)){
|
|
key = mode
|
|
mode = '*'
|
|
}
|
|
|
|
|
|
var genKeys = function(key, shift_key){
|
|
// match candidates...
|
|
return key_separators
|
|
// full key...
|
|
.map(function(s){ return key.join(s) })
|
|
// full shift key...
|
|
.concat(shift_key ?
|
|
key_separators
|
|
.map(function(s){ return shift_key.join(s) })
|
|
: [])
|
|
.unique() }
|
|
var walkAliases = function(bindings, handler, modifiers){
|
|
var seen = []
|
|
var modifiers = modifiers || []
|
|
|
|
while(handler in bindings){
|
|
handler = bindings[handler]
|
|
|
|
handler = modifiers
|
|
.filter(function(m){
|
|
return handler.indexOf(m) < 0
|
|
&& seen.indexOf(m+handler) < 0
|
|
&& m+handler in bindings })
|
|
.map(function(m){ return m+handler })[0]
|
|
|| handler
|
|
|
|
// check for loops...
|
|
if(seen.indexOf(handler) >= 0){
|
|
handler = null
|
|
break
|
|
}
|
|
seen.push(handler)
|
|
}
|
|
|
|
return handler
|
|
}
|
|
|
|
key = this.normalizeKey(this.splitKey(key))
|
|
var shift_key = this.shifted(key)
|
|
|
|
// match candidates...
|
|
var keys = genKeys(key, shift_key).unique()
|
|
|
|
// get modes...
|
|
var modes = mode == '*' ? Object.keys(keyboard)
|
|
: mode == 'test' || mode == '?' ? this.modes()
|
|
: mode instanceof Array ? mode
|
|
: [mode]
|
|
|
|
// get...
|
|
if(handler === undefined){
|
|
var res = {}
|
|
var k = key.slice(-1)[0]
|
|
var c = this.key2code(k)
|
|
|
|
var mod = genKeys(key.slice(0, -1).concat(''))
|
|
|
|
var drop = mode == 'test' || mode == '?'
|
|
for(var i=0; i < modes.length; i++){
|
|
var m = modes[i]
|
|
|
|
var bindings = keyboard[m]
|
|
|
|
// stage 1: check key aliases with modifiers...
|
|
handler = walkAliases(
|
|
bindings,
|
|
keys.filter(function(k){ return bindings[k] })[0])
|
|
|
|
// stage 2: check raw key aliases with and without modifiers...
|
|
if(!handler){
|
|
handler = walkAliases(
|
|
bindings,
|
|
[k, c].filter(function(k){ return bindings[k] })[0],
|
|
mod)
|
|
}
|
|
|
|
// explicit DROP -- ignore next sections...
|
|
if(drop && handler == 'DROP'){
|
|
break
|
|
}
|
|
|
|
// we got a match...
|
|
if(handler){
|
|
res[m] = handler
|
|
}
|
|
|
|
// if key in .drop then ignore the rest...
|
|
if(drop
|
|
// explicit go to next section...
|
|
&& (!handler
|
|
|| (typeof(handler) == typeof('str')
|
|
&& handler.slice(0, 4) != 'NEXT'))
|
|
&& (bindings.drop == '*'
|
|
// XXX should this be more flexible by adding a
|
|
// specific key combo?
|
|
// ... if yes, we'll need to differentiate
|
|
// between X meaning drop only X and drop
|
|
// all combos with X...
|
|
|| (bindings.drop || []).indexOf(k) >= 0)){
|
|
break
|
|
}
|
|
}
|
|
|
|
return (typeof(mode) == typeof('str')
|
|
&& ['*', 'test', '?'].indexOf(mode) < 0) ?
|
|
res[mode]
|
|
: res
|
|
|
|
// set / remove...
|
|
} else {
|
|
modes.forEach(function(m){
|
|
var bindings = keyboard[m]
|
|
|
|
// remove all matching keys...
|
|
// NOTE: if key with modifiers, then this will remove only
|
|
// the full matched keys and shifted matches but will
|
|
// leave the key without modifiers as-is...
|
|
keys.forEach(function(k){ delete bindings[k] })
|
|
|
|
// set handler if given...
|
|
if(handler && handler != ''){
|
|
keyboard[mode][key] = handler
|
|
}
|
|
})
|
|
}
|
|
|
|
return this
|
|
},
|
|
|
|
// get applicable modes...
|
|
//
|
|
modes: function(context){
|
|
var that = this
|
|
return that.isModeApplicable ?
|
|
Object.keys(this.keyboard)
|
|
.filter(function(mode){
|
|
return that.isModeApplicable(
|
|
mode,
|
|
that.keyboard,
|
|
context || that.context) })
|
|
: Object.keys(this.keyboard) },
|
|
|
|
|
|
// init base data...
|
|
__init__: function(keyboard, is_mode_applicable){
|
|
this.keyboard = keyboard
|
|
|
|
if(is_mode_applicable instanceof Function){
|
|
this.isModeApplicable = is_mode_applicable
|
|
}
|
|
},
|
|
}
|
|
|
|
var Keyboard =
|
|
module.Keyboard =
|
|
object.makeConstructor('Keyboard',
|
|
KeyboardClassPrototype,
|
|
KeyboardPrototype)
|
|
|
|
|
|
//---------------------------------------------------------------------
|
|
// Keyboard handler with modes identified by CSS selectors...
|
|
|
|
var KeyboardWithCSSModesPrototype = {
|
|
service_fields: ['doc', 'drop', 'pattern'],
|
|
|
|
isModeApplicable: function(mode, keyboard, context){
|
|
var pattern = keyboard[mode].pattern || mode
|
|
context = context || this.context
|
|
return !pattern
|
|
|| pattern == '*'
|
|
// XXX can we join these into one search???
|
|
|| context.is(pattern)
|
|
|| context.find(pattern).length > 0
|
|
},
|
|
|
|
__init__: function(keyboard, context){
|
|
object.superMethod(KeyboardWithCSSModes, '__init__').call(this, keyboard)
|
|
|
|
if(context instanceof Function){
|
|
Object.defineProperty(this, 'context', {
|
|
get: context,
|
|
})
|
|
|
|
} else {
|
|
this.context = context
|
|
}
|
|
},
|
|
}
|
|
|
|
var KeyboardWithCSSModes =
|
|
module.KeyboardWithCSSModes =
|
|
object.makeConstructor('KeyboardWithCSSModes',
|
|
KeyboardClassPrototype,
|
|
KeyboardWithCSSModesPrototype)
|
|
// inherit from Keyboard...
|
|
KeyboardWithCSSModes.prototype.__proto__ = Keyboard.prototype
|
|
|
|
|
|
|
|
|
|
/*********************************************************************/
|
|
|
|
// Base event handler wrapper of Keyboard...
|
|
//
|
|
// This will produce a handler that can be used in one of two ways:
|
|
// - event handler
|
|
// - an event is passed as the only argument
|
|
// - the function can be used directly as an event handler
|
|
// - direct key handler
|
|
// - a key and optionally a no_match handler are passed
|
|
//
|
|
// Example:
|
|
// var handler = makeKeyboardHandler(kb, null, action)
|
|
//
|
|
// // event handler...
|
|
// $(window).keydown(handler)
|
|
//
|
|
// // used directly...
|
|
// handler('ctrl_C', function(k){ console.log('Not bound:', k) })
|
|
//
|
|
var makeKeyboardHandler =
|
|
module.makeKeyboardHandler =
|
|
function makeKeyboardHandler(keyboard, unhandled, actions){
|
|
|
|
var kb = keyboard instanceof Keyboard ?
|
|
keyboard
|
|
//: Keyboard(keyboard, checkGlobalMode)
|
|
: Keyboard(keyboard)
|
|
|
|
return function(key, no_match){
|
|
no_match = no_match || unhandled
|
|
var did_handling = false
|
|
var evt = event
|
|
var res
|
|
|
|
//if(key instanceof Event || key instanceof $.Event){
|
|
if(typeof(key) != typeof('str')){
|
|
evt = key
|
|
key = kb.event2key(evt)
|
|
}
|
|
|
|
var handlers = kb.handler('test', key)
|
|
|
|
Object.keys(handlers).forEach(function(mode){
|
|
if(res === false){
|
|
return
|
|
}
|
|
|
|
var handler = handlers[mode]
|
|
|
|
// raw function handler...
|
|
if(handler instanceof Function){
|
|
res = handler.call(actions)
|
|
|
|
// action call syntax...
|
|
} else {
|
|
var h = parseActionCall(handler)
|
|
|
|
if(h && h.action in actions){
|
|
did_handling = true
|
|
|
|
evt
|
|
&& h.no_default
|
|
&& evt.preventDefault()
|
|
|
|
// call the handler...
|
|
res = actions[h.action].apply(actions, h.arguments)
|
|
|
|
evt
|
|
&& h.stop_propagation
|
|
&& evt.stopPropagation()
|
|
&& (res = false)
|
|
}
|
|
}
|
|
})
|
|
|
|
no_match
|
|
&& !did_handling
|
|
&& no_match.call(actions, evt, key)
|
|
|
|
return res
|
|
}
|
|
}
|
|
|
|
|
|
|
|
//---------------------------------------------------------------------
|
|
// handler wrappers...
|
|
|
|
// Event handler wrapper to stop handling keys if check callback does
|
|
// not pass (returns false)...
|
|
//
|
|
var stoppableKeyboardRepeat =
|
|
module.stoppableKeyboardRepeat =
|
|
function(handler, check){
|
|
return function(evt){
|
|
return check() && handler(evt)
|
|
}
|
|
}
|
|
|
|
|
|
// Event handler wrapper that will drop identical keys repeating at rate
|
|
// greater than max_rate
|
|
//
|
|
// NOTE: this will only limit repeating key combinations thus no lag is
|
|
// introduced...
|
|
var dropRepeatingkeys =
|
|
module.dropRepeatingkeys =
|
|
function dropRepeatingkeys(handler, max_rate){
|
|
var _timeout = null
|
|
|
|
var key = null
|
|
|
|
var ctrl = null
|
|
var meta = null
|
|
var alt = null
|
|
var shift = null
|
|
|
|
return function(evt){
|
|
if(_timeout != null
|
|
&& key == evt.keyCode
|
|
&& ctrl == evt.ctrlKey
|
|
&& meta == evt.metaKey
|
|
&& alt == evt.altKey
|
|
&& shift == evt.shiftKey){
|
|
return
|
|
}
|
|
|
|
key = evt.keyCode
|
|
ctrl = evt.ctrlKey
|
|
meta = evt.metaKey
|
|
alt = evt.altKey
|
|
shift = evt.shiftKey
|
|
|
|
_timeout = setTimeout(function(){
|
|
_timeout = null
|
|
},
|
|
// XXX is this the right way to go???
|
|
typeof(max_rate) == typeof(123) ? max_rate : max_rate())
|
|
|
|
return handler(evt)
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
/**********************************************************************
|
|
* vim:set ts=4 sw=4 : */ return module })
|