The Tor Browser / file comparison
comparison: addon-sdk/source/lib/sdk/input/window.js
addon-sdk/source/lib/sdk/input/window.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 "use strict"; | |
| 5 | |
| 6 const { windows, isInteractive, isDocumentLoaded, | |
| 7 getOuterId, isTopLevel } = require("../window/utils"); | |
| 8 const { InputPort } = require("./system"); | |
| 9 const { lift, merges, foldp, keepIf, start, Input } = require("../event/utils"); | |
| 10 const { patch } = require("diffpatcher/index"); | |
| 11 const { on } = require("../event/core"); | |
| 12 const { Sequence, seq, filter, object, pairs } = require("../util/sequence"); | |
| 13 | |
| 14 | |
| 15 // Create lazy iterators from the regular arrays, although | |
| 16 // once https://github.com/mozilla/addon-sdk/pull/1314 lands | |
| 17 // `windows` will be transforme to lazy iterators. | |
| 18 // When iterated over belowe sequences items will represent | |
| 19 // state of windows at the time of iteration. | |
| 20 const opened = seq(function*() { | |
| 21 const items = windows(null, {includePrivates: true}); | |
| 22 for (let item of items) | |
| 23 yield [getOuterId(item), item]; | |
| 24 }); | |
| 25 const interactive = filter(([_, window]) => isInteractive(window), opened); | |
| 26 const loaded = filter(([_, window]) => isDocumentLoaded(window), opened); | |
| 27 | |
| 28 // Helper function that converts given argument to a delta. | |
| 29 const Update = window => window && object([getOuterId(window), window]); | |
| 30 const Delete = window => window && object([getOuterId(window), null]); | |
| 31 | |
| 32 // Signal represents delta for last opened top level window. | |
| 33 const LastOpened = lift(Update, new InputPort({topic: "domwindowopened"})); | |
| 34 exports.LastOpened = LastOpened; | |
| 35 | |
| 36 // Signal represents delta for last top level window close. | |
| 37 const LastClosed = lift(Delete, new InputPort({topic: "domwindowclosed"})); | |
| 38 exports.LastClosed = LastClosed; | |
| 39 | |
| 40 const windowFor = document => document && document.defaultView; | |
| 41 | |
| 42 // Signal represent delta for last top level window document becoming interactive. | |
| 43 const InteractiveDoc = new InputPort({topic: "chrome-document-interactive"}); | |
| 44 const InteractiveWin = lift(windowFor, InteractiveDoc); | |
| 45 const LastInteractive = lift(Update, keepIf(isTopLevel, null, InteractiveWin)); | |
| 46 exports.LastInteractive = LastInteractive; | |
| 47 | |
| 48 // Signal represent delta for last top level window loaded. | |
| 49 const LoadedDoc = new InputPort({topic: "chrome-document-loaded"}); | |
| 50 const LoadedWin = lift(windowFor, LoadedDoc); | |
| 51 const LastLoaded = lift(Update, keepIf(isTopLevel, null, LoadedWin)); | |
| 52 exports.LastLoaded = LastLoaded; | |
| 53 | |
| 54 | |
| 55 const initialize = input => { | |
| 56 if (!input.initialized) { | |
| 57 input.value = object(...input.value); | |
| 58 Input.start(input); | |
| 59 input.initialized = true; | |
| 60 } | |
| 61 }; | |
| 62 | |
| 63 // Signal represents set of currently opened top level windows, updated | |
| 64 // to new set any time window is opened or closed. | |
| 65 const Opened = foldp(patch, opened, merges([LastOpened, LastClosed])); | |
| 66 Opened[start] = initialize; | |
| 67 exports.Opened = Opened; | |
| 68 | |
| 69 // Signal represents set of top level interactive windows, updated any | |
| 70 // time new window becomes interactive or one get's closed. | |
| 71 const Interactive = foldp(patch, interactive, merges([LastInteractive, | |
| 72 LastClosed])); | |
| 73 Interactive[start] = initialize; | |
| 74 exports.Interactive = Interactive; | |
| 75 | |
| 76 // Signal represents set of top level loaded window, updated any time | |
| 77 // new window becomes interactive or one get's closed. | |
| 78 const Loaded = foldp(patch, loaded, merges([LastLoaded, LastClosed])); | |
| 79 Loaded[start] = initialize; | |
| 80 exports.Loaded = Loaded; |
