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sidetracked a bit...

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Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
This commit is contained in:
Alex A. Naanou 2020-11-12 17:01:25 +03:00
parent d7d6857dae
commit 95e0e9c77a
1 changed files with 102 additions and 36 deletions
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138
Viewer/features/core.js
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@ -2447,12 +2447,57 @@ object.Constructor('Task', {
})
// XXX add .toString(..)
var bareEventMethod = function(name, func, options={}){
var hidden
var method
return object.mixinFlat(
method = function(func, mode){
var handlers =
// hidden...
options.handlerLocation == 'hidden' ?
(hidden = hidden || [])
// function...
: options.handlerLocation == 'method' ?
(method.__event_handlers__ = method.__event_handlers__ || [])
// context (default)...
: ((this.__event_handlers__ = this.__event_handlers__ || {})[name] =
this.__event_handlers__[name] || [])
var args = [...arguments]
var handle = function(){
handlers
.forEach(function(handler){
handler(...args) }) }
var res
func ?
(res = func.call(this, handle, ...args))
: handle(...args)
return res },
{
__event__: true,
get __event_handler_location__(){
return ['hidden', 'method'].includes(options.handlerLocation) ?
options.handlerLocation
: 'context' },
__event_handler_remove__: function(context, func){
var handlers =
(options.handlerLocation == 'hidden' ?
hidden
: options.handlerLocation == 'method' ?
method.__event_handlers__
: (context.__event_handlers__ || {})[name]) || []
handlers.splice(handlers.indexOf(func), 1)
return this },
toString: function(){
return func.toString()
.replace(/^(function[^(]*\()[^,)]*, ?/, '$1') },
}) }
//
// eventMethod(name[, func])
// eventMethod(name[, func], 'hidden')
// -> method
//
// eventMethod(name[, func], 'visible')
// -> method
//
//
@ -2473,39 +2518,56 @@ object.Constructor('Task', {
//
//
// XXX move this someplace generic...
var eventMethod = function(name, func, mode='hidden'){
// no func given...
if(typeof(func) != 'function'){
mode = func
func = undefined }
// hidden handler list...
var handlers = mode == 'hidden' && []
// XXX should this be an EventFunction callable...
var eventMethod = function(name, func, options={}){
return Object.assign(
bareEventMethod(name,
function(handle, ...args){
// add handler...
// XXX handle handler tags...
if(typeof(args[0]) == 'function'){
var handlers =
// hidden...
options.handlerLocation == 'hidden' ?
(hidden = hidden || [])
// function...
: options.handlerLocation == 'method' ?
(method.__event_handlers__ = method.__event_handlers__ || [])
// context (default)...
: ((this.__event_handlers__ = this.__event_handlers__ || {})[name] =
this.__event_handlers__[name] || [])
// add handler...
handlers.push(args[1])
// call the action...
} else {
func.call(handle, ...args) }
return this },
options),
{
// NOTE: this is a copy of bareEventMethod's .toString() as we
// still need to base the doc on the user's func...
toString: function(){
return func.toString()
.replace(/^(function[^(]*\()[^,)]*, ?/, '$1') },
}) }
var EventHandlerMixin = {
on: function(event, func){
},
off: function(event, func){
},
trigger: function(event, ...args){
},
}
return function(func, mode){
handlers = handlers === false ?
this['__'+name]
: handlers
// bind/unbind event handler...
if(typeof(func) == 'function'){
mode === false ?
handlers.splice(handlers.indexOf(func), 1)
: handlers.push(func)
// trigger the event...
} else {
var args = [...arguments]
var handle = function(){
handlers
.forEach(function(handler){
handler(...args) }) }
func ?
func.call(this, handle, ...args)
: handle(...args)}
return this } }
var taskAction =
module.taskAction =
function(title, func){
return Object.assign(
var action
return (action = Object.assign(
task(function(){
var that = this
@ -2513,12 +2575,16 @@ function(title, func){
var ticket = {
// XXX revise naming...
start: eventMethod('start', function(handle, ...args){
}),
if(this.state == 'ready'){
that.resumeTask(title, action)
handle(...args) } }),
pause: eventMethod('pause', function(handle, ...args){
}),
if(this.state == 'running'){
that.pauseTask(title, action)
handle(...args) } }),
abort: eventMethod('abort', function(handle, ...args){
if(!this.state != 'done'){
this.abortTask(title)
that.abortTask(title, action)
handle(...args) } }),
// can be:
@ -2537,7 +2603,7 @@ function(title, func){
{
toString: function(){
return `core.taskAction('${ title }', \n${ func.toString() })` },
}) }
})) }
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -