forked from mirrors/gecko-dev
640fe52298
MozReview-Commit-ID: F6xUXCgdRE4 --HG-- extra : rebase_source : 65de1b0aba412d9044b5196115f74276caa058f2
103 lines
3 KiB
JavaScript
103 lines
3 KiB
JavaScript
/* 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";
|
|
|
|
const promise = require("promise");
|
|
|
|
loader.lazyRequireGetter(this, "gcliInit", "devtools/shared/gcli/commands/index");
|
|
|
|
/**
|
|
* A collection of utilities to help working with commands
|
|
*/
|
|
var CommandUtils = {
|
|
/**
|
|
* Caches requisitions created when calling executeOnTarget:
|
|
* Target => Requisition Promise
|
|
*/
|
|
_requisitions: new WeakMap(),
|
|
|
|
/**
|
|
* Utility to execute a command string on a given target
|
|
*/
|
|
async executeOnTarget(target, command) {
|
|
let requisitionPromise = this._requisitions.get(target);
|
|
if (!requisitionPromise) {
|
|
requisitionPromise = this.createRequisition(target, {
|
|
environment: CommandUtils.createEnvironment({ target }, "target")
|
|
});
|
|
// Store the promise to avoid races by storing the promise immediately
|
|
this._requisitions.set(target, requisitionPromise);
|
|
}
|
|
const requisition = await requisitionPromise;
|
|
requisition.updateExec(command);
|
|
},
|
|
|
|
/**
|
|
* Utility to ensure that things are loaded in the correct order
|
|
*/
|
|
createRequisition: function(target, options) {
|
|
if (!gcliInit) {
|
|
return promise.reject("Unable to load gcli");
|
|
}
|
|
return gcliInit.getSystem(target).then(system => {
|
|
const Requisition = require("gcli/cli").Requisition;
|
|
return new Requisition(system, options);
|
|
});
|
|
},
|
|
|
|
/**
|
|
* Destroy the remote side of the requisition as well as the local side
|
|
*/
|
|
destroyRequisition: function(requisition, target) {
|
|
requisition.destroy();
|
|
gcliInit.releaseSystem(target);
|
|
},
|
|
|
|
/**
|
|
* A helper function to create the environment object that is passed to
|
|
* GCLI commands.
|
|
* @param targetContainer An object containing a 'target' property which
|
|
* reflects the current debug target
|
|
*/
|
|
createEnvironment: function(container, targetProperty = "target") {
|
|
if (!container[targetProperty].toString ||
|
|
!/TabTarget/.test(container[targetProperty].toString())) {
|
|
throw new Error("Missing target");
|
|
}
|
|
|
|
return {
|
|
get target() {
|
|
if (!container[targetProperty].toString ||
|
|
!/TabTarget/.test(container[targetProperty].toString())) {
|
|
throw new Error("Removed target");
|
|
}
|
|
|
|
return container[targetProperty];
|
|
},
|
|
|
|
get chromeWindow() {
|
|
return this.target.tab.ownerDocument.defaultView;
|
|
},
|
|
|
|
get chromeDocument() {
|
|
return this.target.tab.ownerDocument.defaultView.document;
|
|
},
|
|
|
|
get window() {
|
|
// throw new
|
|
// Error("environment.window is not available in runAt:client commands");
|
|
return this.chromeWindow.gBrowser.contentWindowAsCPOW;
|
|
},
|
|
|
|
get document() {
|
|
// throw new
|
|
// Error("environment.document is not available in runAt:client commands");
|
|
return this.chromeWindow.gBrowser.contentDocumentAsCPOW;
|
|
}
|
|
};
|
|
},
|
|
};
|
|
|
|
exports.CommandUtils = CommandUtils;
|