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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
"use strict";
const {
FrontClassWithSpec,
registerFront,
} = require("devtools/shared/protocol");
const { compatibilitySpec } = require("devtools/shared/specs/compatibility");
const PREF_TARGET_BROWSERS = "devtools.inspector.compatibility.target-browsers";
class CompatibilityFront extends FrontClassWithSpec(compatibilitySpec) {
constructor(client, targetFront, parentFront) {
super(client, targetFront, parentFront);
this.client = client;
}
async initialize() {
// Backward-compatibility: can be removed when FF81 is on the release
// channel. See 1659866.
const preferenceFront = await this.client.mainRoot.getFront("preference");
try {
await preferenceFront.getCharPref(PREF_TARGET_BROWSERS);
} catch (e) {
// If `getCharPref` failed, the preference is not set on the server (most
// likely Fenix). Set a default value, otherwise compatibility actor
// methods might throw.
await preferenceFront.setCharPref(PREF_TARGET_BROWSERS, "");
}
}
/*
* Backwards compatibility wrapper for getCSSDeclarationBlockIssues.
* This can be removed once FF82 hits the release channel
*/
async _getTraits() {
if (!this._traits) {
try {
// From FF82+, getTraits() is supported
const { traits } = await super.getTraits();
this._traits = traits;
} catch (e) {
this._traits = {};
}
}
return this._traits;
}
/*
* Backwards compatibility wrapper for getCSSDeclarationBlockIssues.
* This can be removed once FF82 hits the release channel
*/
async getCSSDeclarationBlockIssues(declarationBlock, targetBrowsers) {
const traits = await this._getTraits();
if (!traits.declarationBlockIssueComputationEnabled) {
return [];
}
return super.getCSSDeclarationBlockIssues(declarationBlock, targetBrowsers);
}
}
exports.CompatibilityFront = CompatibilityFront;
registerFront(CompatibilityFront);