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this tentatively fixes #1514
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@ -24,44 +24,30 @@
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// https://developer.mozilla.org/en-US/Firefox/Multiprocess_Firefox/Frame_script_environment
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// https://developer.mozilla.org/en-US/Firefox/Multiprocess_Firefox/Frame_script_environment
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(function() {
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(function() {
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'use strict';
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'use strict';
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if ( !this.docShell ) {
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return;
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}
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let {LocationChangeListener} = Components.utils.import(
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let {LocationChangeListener} = Components.utils.import(
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Components.stack.filename.replace('Script', 'Module'),
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Components.stack.filename.replace('Script', 'Module'),
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null
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null
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);
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);
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// https://github.com/gorhill/uBlock/issues/1444
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// https://github.com/gorhill/uBlock/issues/1444
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// Apparently the same context is used for all extensions, hence we must
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// Apparently, on older versions of Firefox (31 and less), the same context
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// use scoped variables to ensure no collision.
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// is used for all extensions, hence we must use a unique variable name to
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let locationChangeListener;
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// ensure no collision.
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this.ublock0LocationChangeListener = null;
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// https://developer.mozilla.org/en-US/Add-ons/Code_snippets/Progress_Listeners
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// "Note that the browser uses a weak reference to your listener object,
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// "so make sure to keep an external reference to your object to ensure
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// "that it stays in memory."
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// This listener below allows us to keep `locationChangeListener` alive
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// until we no longer need it.
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let shutdown = function(ev) {
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if ( ev.target === this ) {
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this.removeEventListener('unload', shutdown);
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locationChangeListener = null;
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}
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};
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this.addEventListener('unload', shutdown);
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// https://github.com/gorhill/uBlock/issues/1514
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// Fix?
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if ( this.docShell ) {
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let webProgress = this.docShell
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let webProgress = this.docShell
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.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
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.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
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.getInterface(Components.interfaces.nsIWebProgress);
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.getInterface(Components.interfaces.nsIWebProgress);
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if ( webProgress && webProgress.isTopLevel ) {
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let domWindow = webProgress.DOMWindow;
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locationChangeListener = new LocationChangeListener(this.docShell, webProgress);
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if ( domWindow === domWindow.top ) {
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this.ublock0LocationChangeListener = new LocationChangeListener(this.docShell, webProgress);
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}
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}
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}
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}).call(this);
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}).call(this);
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/******************************************************************************/
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/******************************************************************************/
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