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Fix code sequence when attaching and detaching event handlers.

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This commit is contained in:
Jürg Lehni 2011-11-12 17:14:49 +01:00
parent da5a837da2
commit 8eaddc759e
1 changed files with 10 additions and 11 deletions
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21
src/core/Callback.js
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@ -28,11 +28,11 @@ var Callback = {
var handlers = this._handlers = this._handlers || {};
handlers = handlers[type] = handlers[type] || [];
if (handlers.indexOf(func) == -1) { // Not added yet, add it now
handlers.push(func);
// See if this is the first handler that we're attaching, and
// call install if defined.
if (entry.install && !handlers.length)
if (entry.install && handlers.length == 1)
entry.install.call(this);
handlers.push(func);
}
return this;
},
@ -48,17 +48,16 @@ var Callback = {
handlers = this._handlers && this._handlers[type],
index;
if (entry && handlers) {
if (!func) { // Remove all
handlers = [];
} else if ((index = handlers.indexOf(func)) != -1) {
handlers.splice(index, 1);
}
// See if this is the last handler that we're detaching, and call
// uninstall if defined.
if (!handlers.length) {
delete this._handlers[type];
// See if this is the last handler that we're detaching (or if we
// are detaching all handlers), and call uninstall if defined.
if (!func || (index = handlers.indexOf(func)) != -1
&& handlers.length == 1) {
if (entry.uninstall)
entry.uninstall.call(this);
delete this._handlers[type];
} else if (index != -1) {
// Just remove this one handler
handlers.splice(index, 1);
}
}
return this;