The Tor Browser / file comparison
comparison: browser/components/sessionstore/src/DocShellCapabilities.jsm
browser/components/sessionstore/src/DocShellCapabilities.jsm
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| -1:000000000000 | 0:3cb463a75f20 |
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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 file, | |
| 3 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 "use strict"; | |
| 6 | |
| 7 this.EXPORTED_SYMBOLS = ["DocShellCapabilities"]; | |
| 8 | |
| 9 /** | |
| 10 * The external API exported by this module. | |
| 11 */ | |
| 12 this.DocShellCapabilities = Object.freeze({ | |
| 13 collect: function (docShell) { | |
| 14 return DocShellCapabilitiesInternal.collect(docShell); | |
| 15 }, | |
| 16 | |
| 17 restore: function (docShell, disallow) { | |
| 18 return DocShellCapabilitiesInternal.restore(docShell, disallow); | |
| 19 }, | |
| 20 }); | |
| 21 | |
| 22 /** | |
| 23 * Internal functionality to save and restore the docShell.allow* properties. | |
| 24 */ | |
| 25 let DocShellCapabilitiesInternal = { | |
| 26 // List of docShell capabilities to (re)store. These are automatically | |
| 27 // retrieved from a given docShell if not already collected before. | |
| 28 // This is made so they're automatically in sync with all nsIDocShell.allow* | |
| 29 // properties. | |
| 30 caps: null, | |
| 31 | |
| 32 allCapabilities: function (docShell) { | |
| 33 if (!this.caps) { | |
| 34 let keys = Object.keys(docShell); | |
| 35 this.caps = keys.filter(k => k.startsWith("allow")).map(k => k.slice(5)); | |
| 36 } | |
| 37 return this.caps; | |
| 38 }, | |
| 39 | |
| 40 collect: function (docShell) { | |
| 41 let caps = this.allCapabilities(docShell); | |
| 42 return caps.filter(cap => !docShell["allow" + cap]); | |
| 43 }, | |
| 44 | |
| 45 restore: function (docShell, disallow) { | |
| 46 let caps = this.allCapabilities(docShell); | |
| 47 for (let cap of caps) | |
| 48 docShell["allow" + cap] = !disallow.has(cap); | |
| 49 }, | |
| 50 }; |
