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code review: use Map instead of Object

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gorhill 2017-10-25 11:37:58 -04:00
parent 2d5e3f38f3
commit 26e9bb7c19
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1 changed files with 15 additions and 11 deletions
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26
src/js/ublock.js
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@ -533,7 +533,7 @@ var reInvalidHostname = /[^a-z0-9.\-\[\]:]/,
/******************************************************************************/ /******************************************************************************/
µBlock.scriptlets = (function() { µBlock.scriptlets = (function() {
var pendingEntries = Object.create(null); var pendingEntries = new Map();
var Entry = function(tabId, scriptlet, callback) { var Entry = function(tabId, scriptlet, callback) {
this.tabId = tabId; this.tabId = tabId;
@ -545,8 +545,9 @@ var reInvalidHostname = /[^a-z0-9.\-\[\]:]/,
Entry.prototype.service = function(response) { Entry.prototype.service = function(response) {
if ( this.timer !== null ) { if ( this.timer !== null ) {
clearTimeout(this.timer); clearTimeout(this.timer);
this.timer = null;
} }
delete pendingEntries[makeKey(this.tabId, this.scriptlet)]; pendingEntries.delete(makeKey(this.tabId, this.scriptlet));
this.callback(response); this.callback(response);
}; };
@ -556,10 +557,8 @@ var reInvalidHostname = /[^a-z0-9.\-\[\]:]/,
var report = function(tabId, scriptlet, response) { var report = function(tabId, scriptlet, response) {
var key = makeKey(tabId, scriptlet); var key = makeKey(tabId, scriptlet);
var entry = pendingEntries[key]; var entry = pendingEntries.get(key);
if ( entry === undefined ) { if ( entry === undefined ) { return; }
return;
}
entry.service(response); entry.service(response);
}; };
@ -569,14 +568,19 @@ var reInvalidHostname = /[^a-z0-9.\-\[\]:]/,
callback(); callback();
return; return;
} }
var key = makeKey(tabId, scriptlet); var key = makeKey(tabId, scriptlet),
if ( pendingEntries[key] !== undefined ) { entry = pendingEntries.get(key);
callback(); if ( entry !== undefined ) {
if ( callback !== entry.callback ) {
callback();
}
return; return;
} }
pendingEntries[key] = new Entry(tabId, scriptlet, callback); pendingEntries.set(key, new Entry(tabId, scriptlet, callback));
} }
vAPI.tabs.injectScript(tabId, { file: 'js/scriptlets/' + scriptlet + '.js' }); vAPI.tabs.injectScript(tabId, {
file: 'js/scriptlets/' + scriptlet + '.js'
});
}; };
// TODO: think about a callback mechanism. // TODO: think about a callback mechanism.