The Tor Browser / file comparison
comparison: addon-sdk/source/lib/sdk/content/events.js
addon-sdk/source/lib/sdk/content/events.js
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| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 "use strict"; | |
| 6 | |
| 7 module.metadata = { | |
| 8 "stability": "experimental" | |
| 9 }; | |
| 10 | |
| 11 const { Ci } = require("chrome"); | |
| 12 const { open } = require("../event/dom"); | |
| 13 const { observe } = require("../event/chrome"); | |
| 14 const { filter, merge, map, expand } = require("../event/utils"); | |
| 15 const { windows } = require("../window/utils"); | |
| 16 const { events: windowEvents } = require("sdk/window/events"); | |
| 17 | |
| 18 // Note: Please note that even though pagehide event is included | |
| 19 // it's not observable reliably since it's not always triggered | |
| 20 // when closing tabs. Implementation can be imrpoved once that | |
| 21 // event will be necessary. | |
| 22 let TYPES = ["DOMContentLoaded", "load", "pageshow", "pagehide"]; | |
| 23 | |
| 24 let insert = observe("document-element-inserted"); | |
| 25 let windowCreate = merge([ | |
| 26 observe("content-document-global-created"), | |
| 27 observe("chrome-document-global-created") | |
| 28 ]); | |
| 29 let create = map(windowCreate, function({target, data, type}) { | |
| 30 return { target: target.document, type: type, data: data } | |
| 31 }); | |
| 32 | |
| 33 function streamEventsFrom({document}) { | |
| 34 // Map supported event types to a streams of those events on the given | |
| 35 // `window` for the inserted document and than merge these streams into | |
| 36 // single form stream off all window state change events. | |
| 37 let stateChanges = TYPES.map(function(type) { | |
| 38 return open(document, type, { capture: true }); | |
| 39 }); | |
| 40 | |
| 41 // Since load events on document occur for every loded resource | |
| 42 return filter(merge(stateChanges), function({target}) { | |
| 43 return target instanceof Ci.nsIDOMDocument | |
| 44 }) | |
| 45 } | |
| 46 exports.streamEventsFrom = streamEventsFrom; | |
| 47 | |
| 48 let opened = windows(null, { includePrivate: true }); | |
| 49 let state = merge(opened.map(streamEventsFrom)); | |
| 50 | |
| 51 | |
| 52 let futureReady = filter(windowEvents, function({type}) | |
| 53 type === "DOMContentLoaded"); | |
| 54 let futureWindows = map(futureReady, function({target}) target); | |
| 55 let futureState = expand(futureWindows, streamEventsFrom); | |
| 56 | |
| 57 exports.events = merge([insert, create, state, futureState]); |
