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Code Issues Releases Wiki Activity

fix #711 (will need confirmations)

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This commit is contained in:
gorhill 2017-03-20 17:01:19 -04:00
parent 076382caf3
commit da992312f3
1 changed files with 10 additions and 4 deletions
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14
src/js/popup.js
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@ -67,9 +67,10 @@ var matrixHeaderPrettyNames = {
var firstPartyLabel = '';
var blacklistedHostnamesLabel = '';
var expandosIdGenerator = 1;
var nodeToExpandosMap = (function() {
if ( typeof window.WeakMap === 'function' ) {
return new window.WeakMap();
if ( typeof window.Map === 'function' ) {
return new window.Map();
}
})();
@ -81,9 +82,14 @@ var expandosFromNode = function(node) {
node = node.nodeAt(0);
}
if ( nodeToExpandosMap ) {
var expandos = nodeToExpandosMap.get(node);
var expandosId = node.getAttribute('data-expandos');
if ( !expandosId ) {
expandosId = '' + (expandosIdGenerator++);
node.setAttribute('data-expandos', expandosId);
}
var expandos = nodeToExpandosMap.get(expandosId);
if ( expandos === undefined ) {
nodeToExpandosMap.set(node, (expandos = Object.create(null)));
nodeToExpandosMap.set(expandosId, (expandos = Object.create(null)));
}
return expandos;
}