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authorMatt A. Tobin <email@mattatobin.com>2018-02-09 06:46:43 -0500
committerMatt A. Tobin <email@mattatobin.com>2018-02-09 06:46:43 -0500
commitac46df8daea09899ce30dc8fd70986e258c746bf (patch)
tree2750d3125fc253fd5b0671e4bd268eff1fd97296 /toolkit/jetpack/sdk/content/events.js
parent8cecf8d5208f3945b35f879bba3015bb1a11bec6 (diff)
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Move Add-on SDK source to toolkit/jetpack
Diffstat (limited to 'toolkit/jetpack/sdk/content/events.js')
-rw-r--r--toolkit/jetpack/sdk/content/events.js57
1 files changed, 57 insertions, 0 deletions
diff --git a/toolkit/jetpack/sdk/content/events.js b/toolkit/jetpack/sdk/content/events.js
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+module.metadata = {
+ "stability": "experimental"
+};
+
+const { Ci } = require("chrome");
+const { open } = require("../event/dom");
+const { observe } = require("../event/chrome");
+const { filter, merge, map, expand } = require("../event/utils");
+const { windows } = require("../window/utils");
+const { events: windowEvents } = require("sdk/window/events");
+
+// Note: Please note that even though pagehide event is included
+// it's not observable reliably since it's not always triggered
+// when closing tabs. Implementation can be imrpoved once that
+// event will be necessary.
+var TYPES = ["DOMContentLoaded", "load", "pageshow", "pagehide"];
+
+var insert = observe("document-element-inserted");
+var windowCreate = merge([
+ observe("content-document-global-created"),
+ observe("chrome-document-global-created")
+]);
+var create = map(windowCreate, function({target, data, type}) {
+ return { target: target.document, type: type, data: data }
+});
+
+function streamEventsFrom({document}) {
+ // Map supported event types to a streams of those events on the given
+ // `window` for the inserted document and than merge these streams into
+ // single form stream off all window state change events.
+ let stateChanges = TYPES.map(function(type) {
+ return open(document, type, { capture: true });
+ });
+
+ // Since load events on document occur for every loded resource
+ return filter(merge(stateChanges), function({target}) {
+ return target instanceof Ci.nsIDOMDocument
+ })
+}
+exports.streamEventsFrom = streamEventsFrom;
+
+var opened = windows(null, { includePrivate: true });
+var state = merge(opened.map(streamEventsFrom));
+
+
+var futureReady = filter(windowEvents, ({type}) =>
+ type === "DOMContentLoaded");
+var futureWindows = map(futureReady, ({target}) => target);
+var futureState = expand(futureWindows, streamEventsFrom);
+
+exports.events = merge([insert, create, state, futureState]);