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}
});
Options:
.initialText = initial text of the element. Defaults to the result
of the element's .value (for INPUT tags) or innerHTML (for
everything else).
everything else). After the timeout/tick count expires, or if the
user confirms the operation, the element's text is re-set to this
value.
.confirmText = text to show when in "confirm mode".
Default=("Confirm: "+initialText), or something similar.
.timeout = Number of milliseconds to wait for confirmation.
Default=3000.
Default=3000. Alternately, use a combination of .ticks and
.ticktime.
.onconfirm = function to call when clicked in confirm mode. Default
.onconfirm = function to call when clicked in confirm mode. Default
= undefined. The function's "this" is the the DOM element to which
the countdown applies.
.ontimeout = function to call when confirm is not issued. Default =
undefined. The function's "this" is the DOM element to which the
countdown applies.
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called.
.classWaiting = optional CSS class string (default='') which is
added to the target when it is waiting on a timeout. When the target
leaves timeout-wait mode, this class is removed. When timeout-wait
mode is entered, this class is added *before* the .onactivate
handler is called.
.ticktime = a number of ms to wait per tick (see the next item).
Default = 1000.
.ticks = a number of "ticks" to wait, as an alternative to .timeout.
When this mode is active, the ontick callback will be triggered
immediately before each tick, including the first one. If both
.ticks and .timeout are set, only one will be used, but which one is
unspecified. If passed a ticks value with a truncated integer value
of 0 or less, it will throw an exception (e.g. that also applies if
it's passed 0.5).
.ontick = when using .ticks, this callback is passed the current
tick number before each tick, and its "this" is the target
element. On each subsequent call, the tick count will be reduced by
1, and it is passed 0 after the final tick expires or when the
action has been confirmed, immediately before the onconfirm or
ontimeout callback. The intention of the callback is to update the
label of the target element. If .ticks is set but .ontick is not
then a default implementation is used which updates the element with
the .confirmText, prepending a countdown to it.
.debug = boolean. If truthy, it sends some debug output to the dev
console to track what it's doing.
Various notes:
- To change the default option values, modify the
fossil.confirmer.defaultOpts object.
- Exceptions triggered via the callbacks are caught and emitted to the
dev console if the debug option is enabled, but are otherwise
ignored.
Due to the nature of multi-threaded code, it is potentially possible
that confirmation and timeout actions BOTH happen if the user triggers
the associated action at "just the right millisecond" before the
timeout is triggered.
- Due to the nature of multi-threaded code, it is potentially possible
that confirmation and timeout actions BOTH happen if the user
triggers the associated action at "just the right millisecond"
before the timeout is triggered.
To change the default option values, modify the
TODO: add an invert option which activates if the timeout is reached
fossil.confirmer.defaultOpts object.
self.target = target;
self.opt = opt;
self.timerID = undefined;
self.state = this.states.initial;
this.target = target;
this.opt = opt;
this.timerID = undefined;
this.state = this.states.initial;
const isInput = f.isInput(target);
const updateText = function(msg){
if(isInput) target.value = msg;
else target.innerHTML = msg;
}
updateText(self.opt.initialText);
updateText(this.opt.initialText);
if(this.opt.ticks && !this.opt.ontick){
this.opt.ontick = function(tick){
updateText("("+tick+") "+self.opt.confirmText);
};
}
this.setClasses(false);
this.doTimeout = function() {
this.timerID = undefined;
if(this.timerID){
clearTimeout( this.timerID );
delete this.timerID;
}
if( this.state != this.states.waiting ) {
// it was already confirmed
return;
}
this.setClasses( false );
this.state = this.states.initial;
dbg("Timeout triggered.");
updateText(this.opt.initialText);
if( this.opt.ontick ){
try{this.opt.ontick.call(this.target, 0)}
catch(e){dbg("ontick EXCEPTION:",e)}
}
if( this.opt.ontimeout ) {
this.opt.ontimeout.call(this.target);
try{this.opt.ontimeout.call(this.target)}
catch(e){dbg("ontimeout EXCEPTION:",e)}
}
updateText(this.opt.initialText);
};
target.addEventListener(
'click', function(){
switch( self.state ) {
case( self.states.waiting ):
/* Cancel the wait on confirmation */
if( undefined !== self.timerID ){
clearTimeout( self.timerID );
delete self.timerID;
}
self.state = self.states.initial;
self.setClasses( false );
dbg("Confirmed");
updateText(self.opt.initialText);
if( self.opt.onconfirm ) self.opt.onconfirm.call(self.target);
if( self.opt.ontick ){
try{self.opt.ontick.call(self.target,0)}
catch(e){dbg("ontick EXCEPTION:",e)}
}
if( self.opt.onconfirm ){
try{self.opt.onconfirm.call(self.target)}
catch(e){dbg("onconfirm EXCEPTION:",e)}
}
updateText(self.opt.initialText);
break;
case( self.states.initial ):
/* Enter the waiting-on-confirmation state... */
if(self.opt.ticks) self.opt.currentTick = self.opt.ticks;
self.setClasses( true );
self.state = self.states.waiting;
updateText( self.opt.confirmText );
if( self.opt.onactivate ) self.opt.onactivate.call( self.target );
if( self.opt.ontick ) self.opt.ontick.call(self.target, self.opt.currentTick);
self.state = self.states.waiting;
dbg("Waiting "+self.opt.timeout+"ms on confirmation...");
updateText( self.opt.confirmText );
self.timerID = setTimeout(function(){self.doTimeout();},self.opt.timeout );
if(self.opt.timeout){
dbg("Waiting "+self.opt.timeout+"ms on confirmation...");
self.timerID =
setTimeout(()=>self.doTimeout(),self.opt.timeout );
}else if(self.opt.ticks){
dbg("Waiting on confirmation for "+self.opt.ticks
+" ticks of "+self.opt.ticktime+"ms each...");
self.timerID =
setInterval(function(){
if(0===--self.opt.currentTick) self.doTimeout();
else{
try{self.opt.ontick.call(self.target,
self.opt.currentTick)}
catch(e){dbg("ontick EXCEPTION:",e)}
}
},self.opt.ticktime);
}
break;
default: // can't happen.
break;
}
}, false
);
};
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initialText: (
f.isInput(elem) ? elem.value : elem.innerHTML
) || "PLEASE SET .initialText"
},opt);
if(!opt.confirmText){
opt.confirmText = "Confirm: "+opt.initialText;
}
if(opt.ticks){
delete opt.timeout;
opt.ticks = 0 | opt.ticks /* ensure it's an integer */;
if(opt.ticks<=0){
throw new Error("ticks must be >0");
}
if(opt.ticktime <= 0) opt.ticktime = 1000;
}else{
delete opt.ontick;
delete opt.ticks;
}
new f.Holder(elem,opt);
return this;
};
/**
The default options for initConfirmer(). Tweak them to set the
defaults. A couple of them (initialText and confirmText) are
dynamically-generated, and can't reasonably be set in the
defaults.
*/
F.confirmer.defaultOpts = {
timeout:3000,
ticks: undefined,
ticktime: 998/*not *quite* 1000*/,
onconfirm: undefined,
ontimeout: undefined,
onactivate: undefined,
classInitial: '',
classWaiting: '',
debug: false
};
})(window.fossil);
|