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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";
const {
FrontClassWithSpec,
registerFront,
} = require("resource://devtools/shared/protocol.js");
const {
propertyIteratorSpec,
} = require("resource://devtools/shared/specs/property-iterator.js");
const {
getAdHocFrontOrPrimitiveGrip,
} = require("resource://devtools/client/fronts/object.js");
/**
* A PropertyIteratorFront provides a way to access to property names and
* values of an object efficiently, slice by slice.
* Note that the properties can be sorted in the backend,
* this is controled while creating the PropertyIteratorFront
* from ObjectFront.enumProperties.
*/
class PropertyIteratorFront extends FrontClassWithSpec(propertyIteratorSpec) {
form(data) {
this.actorID = data.actor;
this.count = data.count;
}
async slice(start, count) {
const result = await super.slice({ start, count });
return this._onResult(result);
}
async all() {
const result = await super.all();
return this._onResult(result);
}
_onResult(result) {
if (!result.ownProperties) {
return result;
}
// The result packet can have multiple properties that hold grips which we may need
// to turn into fronts.
const gripKeys = ["value", "getterValue", "get", "set"];
Object.entries(result.ownProperties).forEach(([key, descriptor]) => {
if (descriptor) {
for (const gripKey of gripKeys) {
if (descriptor.hasOwnProperty(gripKey)) {
result.ownProperties[key][gripKey] = getAdHocFrontOrPrimitiveGrip(
descriptor[gripKey],
this
);
}
}
}
});
return result;
}
}
exports.PropertyIteratorFront = PropertyIteratorFront;
registerFront(PropertyIteratorFront);
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