deac/jquery
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

Simplifies how removal when firing is handled. Removes exception handling (lets the list deadlock). Makes sure no external code can fire the list from a given index (only possible internally).

Browse source
This commit is contained in:
jaubourg 2011-05-08 16:11:00 +02:00
parent 03c4fe9da9
commit 198290a9a7
1 changed files with 30 additions and 42 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

52
src/callbacks.js
View file

@ -61,8 +61,10 @@ jQuery.Callbacks = function( flags, filter ) {
memory,
// Flag to know if list is currently firing
firing,
// Index of cells to remove in the list after firing
deleteAfterFire,
// First callback to fire (used internally by add and fireWith)
firingStart,
// Index of currently firing callback (modified by remove if needed)
firingIndex,
// Add a list of callbacks to the list
add = function( args ) {
var i,
@ -101,10 +103,10 @@ jQuery.Callbacks = function( flags, filter ) {
// With memory, if we're not firing then
// we should call right away
if ( !firing && flags.memory && memory ) {
// Trick the list into thinking it needs to be fired
var tmp = memory;
memory = undefined;
object.fireWith( tmp[ 0 ], tmp[ 1 ], length );
firingStart = length;
object.fireWith( tmp[ 0 ], tmp[ 1 ] );
}
}
return this;
@ -112,17 +114,14 @@ jQuery.Callbacks = function( flags, filter ) {
// Remove a callback from the list
remove: function( fn ) {
if ( list ) {
var i = 0,
length = list.length;
for ( ; i < length; i++ ) {
if ( list[ i ] && fn === list[ i ][ 0 ] ) {
if ( firing ) {
list[ i ] = undefined;
deleteAfterFire.push( i );
} else {
list.splice( i, 1 );
i--;
for ( var i = 0; i < list.length; i++ ) {
if ( fn === list[ i ][ 0 ] ) {
// Handle firingIndex
if ( firing && i <= firingIndex ) {
firingIndex--;
}
// Remove the element
list.splice( i--, 1 );
// If we have some unicity property then
// we only need to do this once
if ( flags.unique || flags.relocate ) {
@ -139,7 +138,7 @@ jQuery.Callbacks = function( flags, filter ) {
var i = 0,
length = list.length;
for ( ; i < length; i++ ) {
if ( list[ i ] && fn === list[ i ][ 0 ] ) {
if ( fn === list[ i ][ 0 ] ) {
return true;
}
}
@ -165,10 +164,9 @@ jQuery.Callbacks = function( flags, filter ) {
return this;
},
// Call all callbacks with the given context and arguments
fireWith: function( context, args, start /* internal */ ) {
var i,
done,
stoppedOnFalse;
fireWith: function( context, args ) {
var start = firingStart;
firingStart = 0;
if ( list && stack && ( !flags.once || !memory && !firing ) ) {
if ( firing ) {
stack.push( [ context, args ] );
@ -176,24 +174,15 @@ jQuery.Callbacks = function( flags, filter ) {
args = args || [];
memory = !flags.memory || [ context, args ];
firing = true;
deleteAfterFire = [];
try {
for ( i = start || 0; list && i < list.length; i++ ) {
if (( stoppedOnFalse = list[ i ] &&
list[ i ][ 1 ].apply( context, args ) === false &&
flags.stopOnFalse )) {
for ( firingIndex = start || 0; list && firingIndex < list.length; firingIndex++ ) {
if ( list[ firingIndex ][ 1 ].apply( context, args ) === false && flags.stopOnFalse ) {
break;
}
}
} finally {
firing = false;
if ( list ) {
done = ( stoppedOnFalse || i >= list.length );
for ( i = 0; i < deleteAfterFire.length; i++ ) {
list.splice( deleteAfterFire[ i ], 1 );
}
if ( !flags.once ) {
if ( done && stack && stack.length ) {
if ( stack && stack.length ) {
object.fireWith.apply( this, stack.shift() );
}
} else if ( !flags.memory ) {
@ -204,7 +193,6 @@ jQuery.Callbacks = function( flags, filter ) {
}
}
}
}
return this;
},
// Call all the callbacks with the given arguments