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background: use of CHANGES_DONE_HINT events to avoid reloads

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Instead of potentially loading a background mid-way when it changes, and
loading it again for every file monitor event, leverage
CHANGES_DONE_HINT events, which allow us to ignore CREATED and CHANGED
signals from the file monitor.

https://bugzilla.gnome.org/show_bug.cgi?id=747794
This commit is contained in:
Cosimo Cecchi 2017-07-31 16:17:35 +01:00
parent c1e478eb53
commit a432653c87
1 changed files with 6 additions and 2 deletions
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8
js/ui/background.js
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@ -154,8 +154,12 @@ var BackgroundCache = new Lang.Class({
let monitor = file.monitor(Gio.FileMonitorFlags.NONE, null); let monitor = file.monitor(Gio.FileMonitorFlags.NONE, null);
monitor.connect('changed', monitor.connect('changed',
Lang.bind(this, function() { Lang.bind(this, function(obj, file, otherFile, eventType) {
this.emit('file-changed', file); // Ignore CHANGED and CREATED events, since in both cases
// we'll get a CHANGES_DONE_HINT event when done.
if (eventType != Gio.FileMonitorEvent.CHANGED &&
eventType != Gio.FileMonitorEvent.CREATED)
this.emit('file-changed', file);
})); }));
this._fileMonitors[key] = monitor; this._fileMonitors[key] = monitor;