mirror of
https://github.com/flynx/ImageGrid.git
synced 2025-11-03 04:40:10 +00:00
1302 lines
33 KiB
JavaScript
Executable File
1302 lines
33 KiB
JavaScript
Executable File
/**********************************************************************
|
|
*
|
|
*
|
|
*
|
|
**********************************************************************/
|
|
((typeof define)[0]=='u'?function(f){module.exports=f(require)}:define)
|
|
(function(require){ var module={} // make module AMD/node compatible...
|
|
/*********************************************************************/
|
|
|
|
var object = require('lib/object')
|
|
|
|
|
|
|
|
/*********************************************************************/
|
|
|
|
var MODIFIERS =
|
|
//module.MODIFIERS = [ 'ctrl', 'meta', 'alt', 'shift' ]
|
|
module.MODIFIERS = [ 'caps', 'ctrl', 'meta', 'alt', 'shift' ]
|
|
|
|
|
|
var KEY_SEPARATORS =
|
|
module.KEY_SEPARATORS = ['+', '-', '_']
|
|
|
|
|
|
// Neither SPECIAL_KEYS nor KEY_CODES are meant for direct access, use
|
|
// toKeyName(<code>) and toKeyCode(<name>) for a more uniform access.
|
|
//
|
|
// NOTE: these are un-shifted ASCII key names rather than actual key
|
|
// code translations.
|
|
// NOTE: ASCII letters (capital) are not present because they actually
|
|
// match their key codes and are accessible via:
|
|
// String.fromCharCode(<code>) or <letter>.charCodeAt(0)
|
|
// NOTE: the lower case letters are accessible by adding 32 to the
|
|
// capital key code.
|
|
// NOTE: don't understand why am I the one who has to write this...
|
|
var SPECIAL_KEYS =
|
|
module.SPECIAL_KEYS = {
|
|
// Special Keys...
|
|
9: 'Tab', 33: 'PgUp', 45: 'Ins',
|
|
13: 'Enter', 34: 'PgDown', 46: 'Del',
|
|
16: 'Shift', 35: 'End', 8: 'Backspace',
|
|
17: 'Ctrl', 36: 'Home', 91: 'Win',
|
|
18: 'Alt', 37: 'Left', 93: 'Menu',
|
|
20: 'Caps Lock',38: 'Up',
|
|
27: 'Esc', 39: 'Right',
|
|
32: 'Space', 40: 'Down',
|
|
|
|
// Function Keys...
|
|
112: 'F1', 116: 'F5', 120: 'F9',
|
|
113: 'F2', 117: 'F6', 121: 'F10',
|
|
114: 'F3', 118: 'F7', 122: 'F11',
|
|
115: 'F4', 119: 'F8', 123: 'F12',
|
|
|
|
// Number row..
|
|
// NOTE: to avoid conflicts with keys that have a code the same as
|
|
// the value of a number key...
|
|
// Ex:
|
|
// 'Backspace' (8) vs. '8' (56)
|
|
// 'Tab' (9) vs. '9' (57)
|
|
// ...all of the numbers start with a '#'
|
|
// this is a problem due to JS coercing the types to string
|
|
// on object attr access.
|
|
// Ex:
|
|
// o = {1: 2}
|
|
// o[1] == o['1'] == true
|
|
49: '#1', 50: '#2', 51: '#3', 52: '#4', 53: '#5',
|
|
54: '#6', 55: '#7', 56: '#8', 57: '#9', 48: '#0',
|
|
|
|
// Punctuation...
|
|
// top row...
|
|
192: '`', /* Numbers */ 189: '-', 187: '=',
|
|
// right side of keyboard...
|
|
219: '[', 221: ']', 220: '\\',
|
|
186: ';', 222: '\'',
|
|
188: ',', 190: '.', 191: '/',
|
|
}
|
|
|
|
|
|
var SHIFT_KEYS =
|
|
module.SHIFT_KEYS = {
|
|
'`': '~', '-': '_', '=':'+',
|
|
|
|
'#1': '!', '#2': '@', '#3': '#', '#4': '$', '#5': '%',
|
|
'#6':'^', '#7':'&', '#8': '*', '#9': '(', '#0': ')',
|
|
|
|
'[': '{', ']': '}', '\\': '|',
|
|
';': ':', '\'': '"',
|
|
',': '<', '.': '>', '/': '?'
|
|
}
|
|
|
|
|
|
var UNSHIFT_KEYS =
|
|
module.UNSHIFT_KEYS = {}
|
|
for(var k in SHIFT_KEYS){
|
|
UNSHIFT_KEYS[SHIFT_KEYS[k]] = k
|
|
}
|
|
|
|
|
|
// build a reverse map of SPECIAL_KEYS
|
|
var KEY_CODES =
|
|
module.KEY_CODES = {}
|
|
for(var k in SPECIAL_KEYS){
|
|
KEY_CODES[SPECIAL_KEYS[k]] = k
|
|
}
|
|
|
|
|
|
// This is used to identify and correct key notation...
|
|
// NOTE: the keys here are intentionally lowercase...
|
|
var SPECIAL_KEY_ALTERNATIVE_TITLES = {
|
|
1: '#1', 2: '#2', 3: '#3', 4: '#4', 5: '#5',
|
|
6: '#6', 7: '#7', 8: '#8', 9: '#9', 0: '#0',
|
|
|
|
ctl: 'Ctrl', control: 'Ctrl',
|
|
|
|
'capslock': 'Caps Lock',
|
|
|
|
'page up': 'PgUp', 'pageup': 'PgUp',
|
|
|
|
'page down': 'PgDown', 'pagedown': 'PgDown',
|
|
|
|
insert: 'Ins',
|
|
|
|
delete: 'Del',
|
|
|
|
'bkspace' : 'Backspace', 'back space' : 'Backspace',
|
|
|
|
windows: 'Win',
|
|
}
|
|
var SPECIAL_KEYS_DICT = {}
|
|
for(var k in SPECIAL_KEYS){
|
|
SPECIAL_KEYS_DICT[SPECIAL_KEYS[k].toLowerCase()] = SPECIAL_KEYS[k]
|
|
}
|
|
|
|
|
|
|
|
/*********************************************************************/
|
|
|
|
// Documentation wrapper...
|
|
var doc =
|
|
module.doc =
|
|
function doc(text, func){
|
|
func = !func ? function(){return true}: func
|
|
func.doc = text
|
|
return func
|
|
}
|
|
|
|
|
|
// Parse action call format...
|
|
//
|
|
// supported format:
|
|
// <actio-name>[!][: <args>][-- <doc>]
|
|
//
|
|
// <args> can contain space seporated:
|
|
// - numbers
|
|
// - strings
|
|
// - non-nested arrays or objects
|
|
//
|
|
// XXX should this be here???
|
|
// XXX add support for suffix to return false / stop_propagation...
|
|
// XXX should this handle calls???
|
|
// i.e. have .call(..) / .apply(..) methods???
|
|
// XXX this is the same as actions.parseStringAction(..), reuse in a logical manner...
|
|
var parseActionCall =
|
|
module.parseActionCall =
|
|
function parseActionCall(txt){
|
|
// split off the doc...
|
|
var c = txt.split('--')
|
|
var doc = (c[1] || '').trim()
|
|
// the actual code...
|
|
c = c[0].split(':')
|
|
|
|
// action and no default flag...
|
|
var action = c[0].trim()
|
|
var no_default = action.slice(-1) == '!'
|
|
action = no_default ? action.slice(0, -1) : action
|
|
|
|
// parse arguments...
|
|
var args = JSON.parse('['+(
|
|
((c[1] || '')
|
|
.match(/"[^"]*"|'[^']*'|\{[^\}]*\}|\[[^\]]*\]|\d+|\d+\.\d*|null/gm)
|
|
|| [])
|
|
.join(','))+']')
|
|
|
|
return {
|
|
action: action,
|
|
arguments: args,
|
|
doc: doc,
|
|
no_default: no_default,
|
|
stop_propagation: false,
|
|
}
|
|
}
|
|
|
|
|
|
|
|
//---------------------------------------------------------------------
|
|
// Helpers and utility functions...
|
|
|
|
// Form standard key string from keyboard event...
|
|
//
|
|
// Format:
|
|
// "[ctrl+][meta+][alt+][shift+]<key>"
|
|
//
|
|
// <key> - string returned by code2key(..)
|
|
//
|
|
var event2key =
|
|
module.event2key =
|
|
function event2key(evt){
|
|
evt = evt || event
|
|
// NOTE: we do not care about the jQuery wrapper here...
|
|
evt = evt.originalEvent || evt
|
|
|
|
var key = []
|
|
evt.ctrlKey && key.push('ctrl')
|
|
evt.altKey && key.push('alt')
|
|
evt.metaKey && key.push('meta')
|
|
evt.shiftKey && key.push('shift')
|
|
evt.getModifierState
|
|
&& evt.getModifierState('CapsLock')
|
|
&& key.push('caps')
|
|
|
|
var k = code2key(evt.keyCode)
|
|
|
|
// add the key if it's not already in, this can happen if we just
|
|
// pressed a modifier key...
|
|
key.indexOf(k.toLowerCase()) < 0 && key.push(k)
|
|
|
|
return key
|
|
}
|
|
|
|
|
|
// Get key code from key name...
|
|
var key2code =
|
|
module.key2code =
|
|
function key2code(key){
|
|
return key in KEY_CODES ? KEY_CODES[key]
|
|
: key.length > 1 ? null
|
|
: key.charCodeAt(0) }
|
|
|
|
|
|
// Get key name from key code...
|
|
var code2key =
|
|
module.code2key =
|
|
function code2key(code){
|
|
var name = String.fromCharCode(code)
|
|
return code in SPECIAL_KEYS ? SPECIAL_KEYS[code]
|
|
: name != '' ? name
|
|
: null }
|
|
|
|
|
|
// Check if string is a standard key string...
|
|
var isKey =
|
|
module.isKey =
|
|
function isKey(key){
|
|
if(!key || key.length == 0 || key.trim() == ''){
|
|
return false
|
|
}
|
|
var modifiers = MODIFIERS
|
|
|
|
var mod = normalizeKey(splitKey(key))
|
|
var k = mod.pop()
|
|
|
|
// key is either a key code or a valid key name...
|
|
return (!!parseInt(k) || key2code(k) != null)
|
|
// mod must be a subset of modifiers...
|
|
&& mod.filter(function(m){ return modifiers.indexOf(m) < 0 }).length == 0
|
|
}
|
|
|
|
|
|
// Split key...
|
|
//
|
|
// NOTE: if this gets an array, it will get returned as-is...
|
|
// NOTE: no checks are made on the key, use isKey(..) in conjunction
|
|
// with normalizeKey(..) for checking...
|
|
var splitKey =
|
|
module.splitKey =
|
|
function splitKey(key){
|
|
var sep = KEY_SEPARATORS
|
|
return key instanceof Array ? key
|
|
: typeof(key) == typeof(123) ? [key]
|
|
: key
|
|
.split(RegExp('['
|
|
+sep.join('\\')
|
|
+']'))
|
|
.concat(sep.indexOf(key.slice(-1)) >= 0 ? key.slice(-1) : [])
|
|
.filter(function(c){ return c != '' }) }
|
|
|
|
|
|
var joinKey =
|
|
module.joinKey =
|
|
function joinKey(key){
|
|
return key instanceof Array ?
|
|
key.join(KEY_SEPARATORS[0] || '+')
|
|
: key }
|
|
|
|
|
|
// Normalize key string/array...
|
|
//
|
|
// NOTE: this will not check if a key is a key use isKey(..) for that.
|
|
var normalizeKey =
|
|
module.normalizeKey =
|
|
function normalizeKey(key){
|
|
var output = key instanceof Array ? 'array' : 'string'
|
|
var modifiers = MODIFIERS
|
|
|
|
// special case: got a number...
|
|
if(typeof(key) == typeof(123)){
|
|
return code2key(key)
|
|
}
|
|
|
|
// sort modifiers via .modifiers and keep the key last...
|
|
key = splitKey(key)
|
|
.slice()
|
|
.sort(function(a, b){
|
|
a = modifiers.indexOf(a.toLowerCase())
|
|
b = modifiers.indexOf(b.toLowerCase())
|
|
return a >= 0 && b >= 0 ? a - b
|
|
: a < 0 ? 1
|
|
: -1 })
|
|
|
|
var k = key.pop()
|
|
k = parseInt(k) ? code2key(parseInt(k)) : k
|
|
|
|
if(!k){
|
|
return k
|
|
}
|
|
|
|
// get the propper name...
|
|
k = SPECIAL_KEY_ALTERNATIVE_TITLES[k.toLowerCase()] || k
|
|
k = SPECIAL_KEYS_DICT[k.toLowerCase()] || k
|
|
|
|
k = modifiers.indexOf(k.toLowerCase()) >= 0 ?
|
|
k.toLowerCase()
|
|
: k.capitalize()
|
|
key.push(k)
|
|
key = key.unique()
|
|
|
|
return output == 'array' ?
|
|
key
|
|
: joinKey(key)
|
|
}
|
|
|
|
|
|
// Get shifted key if available...
|
|
//
|
|
// Examples:
|
|
// - '{' -> 'shift+['
|
|
// - ')' -> 'shift+#0'
|
|
var shifted =
|
|
module.shifted =
|
|
function shifted(key){
|
|
var output = key instanceof Array ? 'array' : 'string'
|
|
key = normalizeKey(splitKey(key)).slice()
|
|
var k = key.pop()
|
|
|
|
var s = (key.indexOf('shift') >= 0 ?
|
|
SHIFT_KEYS[k]
|
|
: UNSHIFT_KEYS[k])
|
|
|| null
|
|
|
|
var res = s == null ? key
|
|
: (key.indexOf('shift') >= 0 ?
|
|
key.filter(function(k){ return k != 'shift' })
|
|
: key.concat(['shift']))
|
|
res.push(s)
|
|
|
|
return s == null ? null
|
|
: output == 'string' ?
|
|
joinKey(res)
|
|
: res
|
|
}
|
|
|
|
|
|
|
|
|
|
/*********************************************************************/
|
|
// Generic keyboard handler...
|
|
//
|
|
// Key binding format:
|
|
// {
|
|
// <section-title>: {
|
|
// doc: <section-doc>,
|
|
//
|
|
// // list of keys to drop after this section is done.
|
|
// //
|
|
// // Setting this to '*' will drop all keys...
|
|
// //
|
|
// // NOTE: these keys will be handled in current section.
|
|
// // NOTE: these keys will not get propagated to the next
|
|
// // matching section...
|
|
// // NOTE: it is possible to override this and explicitly pass
|
|
// // a key to the next section via 'NEXT' (see below).
|
|
// drop: [ <key>, ... ] | '*',
|
|
//
|
|
// // Key mapped to action...
|
|
// //
|
|
// // NOTE: the system poses no restrictions on action format,
|
|
// // but it is recommended to stick to strings or use the
|
|
// // doc(..) wrapper...
|
|
// <key>: <action>,
|
|
//
|
|
// // Key mapped to an alias...
|
|
// //
|
|
// // An alias is any string that is also a key in bindings, it
|
|
// // can be just a string or a key, when matching the string of
|
|
// // aliases will be resolved till either an action (non-alias)
|
|
// // is found or a loop is detected.
|
|
// //
|
|
// // NOTE: in case of a loop, nothing will get called...
|
|
// <key>: <alias> | <key>,
|
|
//
|
|
// // Alias-action mapping...
|
|
// <alias>: <action>,
|
|
//
|
|
// // Explicitly drop key...
|
|
// //
|
|
// // NOTE: this is similar in effect to .drop
|
|
// <key>: 'DROP',
|
|
//
|
|
// // Explicitly pass key to next section...
|
|
// //
|
|
// // This can be useful when it is needed to drop all keys
|
|
// // except for a small sub-group, this can be dune by setting
|
|
// // .drop to '*' (drop all) and explicitly setting the keys to
|
|
// // be propagated to 'NEXT'.
|
|
// //
|
|
// // NOTE: his takes precedence over .drop
|
|
// <key>: 'NEXT',
|
|
//
|
|
// ...
|
|
// },
|
|
// ...
|
|
// }
|
|
//
|
|
|
|
var KeyboardClassPrototype = {
|
|
service_fields: ['doc', 'drop'],
|
|
|
|
event2key: event2key,
|
|
key2code: key2code,
|
|
code2key: code2key,
|
|
isKey: isKey,
|
|
splitKey: splitKey,
|
|
joinKey: joinKey,
|
|
normalizeKey: normalizeKey,
|
|
shifted: shifted
|
|
}
|
|
|
|
var KeyboardPrototype = {
|
|
//service_fields: ['doc', 'drop'],
|
|
special_handlers: {
|
|
DROP: 'drop key',
|
|
NEXT: 'handle key in next section',
|
|
},
|
|
|
|
// Format:
|
|
// {
|
|
// <mode>: {
|
|
// doc: <doc>,
|
|
// drop: [ <key>, ... ] | '*',
|
|
//
|
|
// <alias>: <handler>,
|
|
//
|
|
// <key>: <handler>,
|
|
// <key>: <alias>,
|
|
// },
|
|
// ...
|
|
// }
|
|
//
|
|
// Reserved special handlers:
|
|
// - DROP - drop checking of key
|
|
// NOTE: this will prevent handling next sections
|
|
// for this key.
|
|
// - NEXT - force check next section, this has priority
|
|
// over .drop
|
|
//
|
|
// NOTE: if .__keyboard is set to a function, it will be used both as
|
|
// a getter and as a setter via the .keyboard prop, to overwrite
|
|
// write to .__keyboard directly...
|
|
__keyboard: null,
|
|
get keyboard(){
|
|
return this.__keyboard instanceof Function ?
|
|
this.__keyboard()
|
|
: this.__keyboard },
|
|
set keyboard(value){
|
|
if(this.__keyboard instanceof Function){
|
|
this.__keyboard(value)
|
|
} else {
|
|
this.__keyboard = value
|
|
}
|
|
},
|
|
|
|
// XXX is this needed???
|
|
//context: null,
|
|
|
|
|
|
// string handler parser...
|
|
//
|
|
// Return format:
|
|
// {
|
|
// action: <str>,
|
|
// arguments: <array>,
|
|
// doc: <str> || null,
|
|
// no_default: <bool>,
|
|
// stop_propagation: <bool>,
|
|
// }
|
|
//
|
|
// XXX should this be a Keyboard thing or a context thing???
|
|
// XXX revise name...
|
|
parseStringHandler: parseActionCall,
|
|
|
|
|
|
// utils...
|
|
event2key: KeyboardClassPrototype.event2key,
|
|
key2code: KeyboardClassPrototype.key2code,
|
|
code2key: KeyboardClassPrototype.code2key,
|
|
shifted: KeyboardClassPrototype.shifted,
|
|
splitKey: KeyboardClassPrototype.splitKey,
|
|
joinKey: KeyboardClassPrototype.joinKey,
|
|
normalizeKey: KeyboardClassPrototype.normalizeKey,
|
|
isKey: KeyboardClassPrototype.isKey,
|
|
|
|
//isModeApplicable: function(mode, keyboard, context){ return true },
|
|
|
|
// XXX merge configs...
|
|
// - need to match and order groups (use 1'st as reference)...
|
|
// - need to create new set w/o changing the originals...
|
|
merge: function(){
|
|
},
|
|
|
|
|
|
// Sort modes...
|
|
//
|
|
// Sort via cmp function...
|
|
// .sortModes(func)
|
|
// -> this
|
|
//
|
|
// Sort to the same order as list...
|
|
// .sortModes(list)
|
|
// -> this
|
|
//
|
|
//
|
|
// NOTE: calling this with no arguments will have no effect.
|
|
//
|
|
// XXX should this update the kb in-place???
|
|
sortModes: function(cmp){
|
|
var ordered = {}
|
|
var bindings = this.keyboard
|
|
|
|
if(cmp == null){
|
|
return
|
|
}
|
|
|
|
cmp = cmp instanceof Function ?
|
|
Object.keys(bindings).sort(cmp)
|
|
: cmp
|
|
.concat(Object.keys(bindings))
|
|
.unique()
|
|
|
|
cmp
|
|
.forEach(function(mode){
|
|
ordered[mode] = bindings[mode]
|
|
})
|
|
|
|
// reorder only if we moved all the modes...
|
|
if(Object.keys(bindings).length == Object.keys(ordered).length){
|
|
this.keyboard = ordered
|
|
}
|
|
|
|
return this
|
|
},
|
|
|
|
// Get keys for handler...
|
|
//
|
|
// List all handlers...
|
|
// .keys()
|
|
// .keys('*')
|
|
// -> keys
|
|
//
|
|
// List only applicable handlers...
|
|
// .keys('?')
|
|
// -> keys
|
|
//
|
|
// List keys for handler...
|
|
// .keys(handler)
|
|
// -> keys
|
|
//
|
|
// List keys for given handlers...
|
|
// .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.
|
|
//
|
|
// XXX drop/DROP/NEXT handling need more testing...
|
|
// XXX this and .handler(..) in part repeat handling dropped keys,
|
|
// can we unify this???
|
|
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 == '?' || 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)
|
|
})
|
|
}
|
|
}
|
|
|
|
var modes = handler == '?' ? this.modes() : '*'
|
|
var drop = []
|
|
var next = []
|
|
|
|
Object.keys(keyboard).forEach(function(mode){
|
|
// skip non-applicable modes...
|
|
if(modes != '*' && modes.indexOf(mode) < 0){
|
|
return
|
|
}
|
|
|
|
var bindings = keyboard[mode]
|
|
|
|
if(handler == '?'){
|
|
next = next.concat(bindings.NEXT || [])
|
|
}
|
|
|
|
// 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 == '*' || handler == '?' ?
|
|
Object.keys(rev)
|
|
: handler instanceof Function ?
|
|
Object.keys(rev)
|
|
.filter(handler)
|
|
: handler
|
|
|
|
handlers
|
|
.forEach(function(h){
|
|
if(handler == '?'&& h == 'NEXT'){
|
|
return
|
|
}
|
|
|
|
var keys = (rev[h] || []).map(that.normalizeKey.bind(that))
|
|
|
|
if(handler == '?' && h == 'DROP'){
|
|
drop = drop == '*' ? '*' : drop.concat(keys)
|
|
next = next
|
|
.filter(function(k){ return keys.indexOf(k) >= 0 })
|
|
return
|
|
}
|
|
|
|
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(handler == '?'){
|
|
keys = keys
|
|
.filter(function(key){
|
|
var k = that.splitKey(key)
|
|
return next.indexOf(key) >= 0
|
|
|| next.indexOf(k) >= 0
|
|
|| (drop != '*'
|
|
&& drop.indexOf(key) < 0
|
|
&& drop.indexOf(k) < 0)
|
|
})
|
|
}
|
|
|
|
if(keys.length > 0){
|
|
var m = res[mode] = res[mode] || {}
|
|
m[h] = keys
|
|
}
|
|
})
|
|
|
|
if(handler == '?'){
|
|
drop = drop == '*' || bindings.drop == '*' ?
|
|
'*'
|
|
: drop.concat(bindings.drop || [])
|
|
}
|
|
})
|
|
|
|
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
|
|
//
|
|
// XXX this and .keys('?') in part repeat handling dropped keys,
|
|
// can we unify this???
|
|
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 joinKeys = 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() }
|
|
// NOTE: the generated list is in the following order:
|
|
// - longest chain first
|
|
// - shifted keys first
|
|
// - modifiers are skipped in order, left to right
|
|
// XXX carefully revise key search order...
|
|
var keyCombinations = function(key, shift_key, remove_single_keys){
|
|
if(key.length <= 1){
|
|
//return shift_key ? [key, shift_key] : [key]
|
|
return key
|
|
}
|
|
var k = remove_single_keys ? 1 : 0
|
|
// generate recursively, breadth first...
|
|
var _combinations = function(level, res){
|
|
var next = []
|
|
level
|
|
.map(function(elem){
|
|
var c = elem.join('+++')
|
|
res.indexOf(c) < 0
|
|
&& res.push(c)
|
|
&& elem
|
|
.slice(0, -1)
|
|
.map(function(_, i){
|
|
var s = elem.slice()
|
|
s.splice(i, 1)
|
|
// NOTE: we do not include single keys
|
|
// as they are searched separately...
|
|
//s.length > 0
|
|
s.length > k
|
|
&& next.push(s)
|
|
})
|
|
})
|
|
next.length > 0
|
|
&& _combinations(next, res)
|
|
return res
|
|
}
|
|
return _combinations(shift_key && shift_key.length > 0 ?
|
|
[key, shift_key]
|
|
: [key], [])
|
|
.map(function(e){ return joinKeys(e.split(/\+\+\+/g)) })
|
|
.reduce(function(a, b){ return a.concat(b) }, [])
|
|
}
|
|
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 instanceof Function
|
|
|| (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 = joinKeys(key, shift_key).unique()
|
|
// NOTE: we are skipping single keys from list as they are searched
|
|
// separately...
|
|
var keys = keyCombinations(key, shift_key, true)
|
|
|
|
// XXX
|
|
//console.log(keys, '--', joinKeys(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 = joinKeys(key.slice(0, -1).concat(''))
|
|
var mod = keyCombinations(key.slice(0, -1).concat(''), null, true)
|
|
|
|
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) })
|
|
//
|
|
// NOTE: the handler will also set the .capslock attribute on the
|
|
// keyboard object and update it on each key press...
|
|
// NOTE: if .capslock is false means that either it is not on or
|
|
// undetectable...
|
|
// NOTE: before any key is pressed the .capslock is set to undefined
|
|
//
|
|
// XXX not sure if handler calling mechanics should be outside of the
|
|
// Keyboard object...
|
|
var makeKeyboardHandler =
|
|
module.makeKeyboardHandler =
|
|
function makeKeyboardHandler(keyboard, unhandled, actions){
|
|
|
|
var kb = keyboard instanceof Keyboard ?
|
|
keyboard
|
|
//: Keyboard(keyboard, checkGlobalMode)
|
|
: Keyboard(keyboard)
|
|
kb.capslock = undefined
|
|
|
|
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)
|
|
|
|
kb.capslock = key.indexOf('caps') >= 0
|
|
}
|
|
|
|
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...
|
|
// XXX should this be a Keyboard thing or a context thing???
|
|
} else if(actions.parseStringHandler || kb.parseStringHandler){
|
|
//} else if(kb.parseStringHandler){
|
|
var h = (actions.parseStringHandler || kb.parseStringHandler)(handler)
|
|
//var h = kb.parseStringHandler(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
|
|
}
|
|
}
|
|
|
|
|
|
|
|
//---------------------------------------------------------------------
|
|
// Pausable base event handler wrapper of Keyboard...
|
|
//
|
|
// This is the same as .makeKeyboardHandler(..) but adds ability to
|
|
// pause repeating key handling...
|
|
//
|
|
// This will extend the keyboard object by adding:
|
|
// .pauseRepeat() - will pause repeating keys...
|
|
//
|
|
// XXX should we drop only when the same key is repeating or any keys
|
|
// repeating (as is now)???
|
|
var makePausableKeyboardHandler =
|
|
module.makePausableKeyboardHandler =
|
|
function makePausableKeyboardHandler(keyboard, unhandled, actions, check_interval){
|
|
|
|
var kb = keyboard instanceof Keyboard ?
|
|
keyboard
|
|
//: Keyboard(keyboard, checkGlobalMode)
|
|
: Keyboard(keyboard)
|
|
|
|
kb.pauseRepeat = function(){
|
|
this.__repeat_pause_timeout
|
|
&& clearTimeout(this.__repeat_pause_timeout)
|
|
|
|
this.__repeat_pause_timeout = setTimeout(
|
|
function(){
|
|
delete kb.__repeat_pause_timeout
|
|
},
|
|
(check_interval instanceof Function ?
|
|
check_interval.call(actions)
|
|
: (check_interval || 100)))
|
|
}
|
|
|
|
|
|
return stoppableKeyboardRepeat(
|
|
makeKeyboardHandler(kb, unhandled, actions),
|
|
function(){
|
|
if(kb.__repeat_pause_timeout){
|
|
kb.pauseRepeat()
|
|
return false
|
|
}
|
|
return true
|
|
})
|
|
}
|
|
|
|
|
|
//---------------------------------------------------------------------
|
|
// 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 })
|