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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /browser/components/sessionstore/DocShellCapabilities.jsm
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'browser/components/sessionstore/DocShellCapabilities.jsm')
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1 files changed, 50 insertions, 0 deletions
diff --git a/browser/components/sessionstore/DocShellCapabilities.jsm b/browser/components/sessionstore/DocShellCapabilities.jsm
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+++ b/browser/components/sessionstore/DocShellCapabilities.jsm
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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";
+
+this.EXPORTED_SYMBOLS = ["DocShellCapabilities"];
+
+/**
+ * The external API exported by this module.
+ */
+this.DocShellCapabilities = Object.freeze({
+ collect: function (docShell) {
+ return DocShellCapabilitiesInternal.collect(docShell);
+ },
+
+ restore: function (docShell, disallow) {
+ return DocShellCapabilitiesInternal.restore(docShell, disallow);
+ },
+});
+
+/**
+ * Internal functionality to save and restore the docShell.allow* properties.
+ */
+var DocShellCapabilitiesInternal = {
+ // List of docShell capabilities to (re)store. These are automatically
+ // retrieved from a given docShell if not already collected before.
+ // This is made so they're automatically in sync with all nsIDocShell.allow*
+ // properties.
+ caps: null,
+
+ allCapabilities: function (docShell) {
+ if (!this.caps) {
+ let keys = Object.keys(docShell);
+ this.caps = keys.filter(k => k.startsWith("allow")).map(k => k.slice(5));
+ }
+ return this.caps;
+ },
+
+ collect: function (docShell) {
+ let caps = this.allCapabilities(docShell);
+ return caps.filter(cap => !docShell["allow" + cap]);
+ },
+
+ restore: function (docShell, disallow) {
+ let caps = this.allCapabilities(docShell);
+ for (let cap of caps)
+ docShell["allow" + cap] = !disallow.has(cap);
+ },
+};