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/* Copyright 2023 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
export class SandboxSupportBase {
constructor(win) {
this.win = win;
this.timeoutIds = new Map();
this.commFun = null;
}
destroy() {
this.commFun = null;
for (const id of this.timeoutIds.values()) {
this.win.clearTimeout(id);
}
this.timeoutIds = null;
}
exportValueToSandbox(val) {
throw new Error("Not implemented");
}
importValueFromSandbox(val) {
throw new Error("Not implemented");
}
createErrorForSandbox(errorMessage) {
throw new Error("Not implemented");
}
callSandboxFunction(name, args) {
try {
args = this.exportValueToSandbox(args);
this.commFun(name, args);
} catch (e) {
this.win.console.error(e);
}
}
createSandboxExternals() {
const externals = {
setTimeout: (callbackId, nMilliseconds) => {
if (typeof callbackId !== "number" || typeof nMilliseconds !== "number") {
return;
}
if (callbackId === 0) {
this.win.clearTimeout(this.timeoutIds.get(callbackId));
}
const id = this.win.setTimeout(() => {
this.timeoutIds.delete(callbackId);
this.callSandboxFunction("timeoutCb", {
callbackId,
interval: false
});
}, nMilliseconds);
this.timeoutIds.set(callbackId, id);
},
clearTimeout: callbackId => {
this.win.clearTimeout(this.timeoutIds.get(callbackId));
this.timeoutIds.delete(callbackId);
},
setInterval: (callbackId, nMilliseconds) => {
if (typeof callbackId !== "number" || typeof nMilliseconds !== "number") {
return;
}
const id = this.win.setInterval(() => {
this.callSandboxFunction("timeoutCb", {
callbackId,
interval: true
});
}, nMilliseconds);
this.timeoutIds.set(callbackId, id);
},
clearInterval: callbackId => {
this.win.clearInterval(this.timeoutIds.get(callbackId));
this.timeoutIds.delete(callbackId);
},
alert: cMsg => {
if (typeof cMsg !== "string") {
return;
}
this.win.alert(cMsg);
},
confirm: cMsg => {
if (typeof cMsg !== "string") {
return false;
}
return this.win.confirm(cMsg);
},
prompt: (cQuestion, cDefault) => {
if (typeof cQuestion !== "string" || typeof cDefault !== "string") {
return null;
}
return this.win.prompt(cQuestion, cDefault);
},
parseURL: cUrl => {
const url = new this.win.URL(cUrl);
const props = ["hash", "host", "hostname", "href", "origin", "password", "pathname", "port", "protocol", "search", "searchParams", "username"];
return Object.fromEntries(props.map(name => [name, url[name].toString()]));
},
send: data => {
if (!data) {
return;
}
const event = new this.win.CustomEvent("updatefromsandbox", {
detail: this.importValueFromSandbox(data)
});
this.win.dispatchEvent(event);
}
};
Object.setPrototypeOf(externals, null);
return (name, args) => {
try {
const result = externals[name](...args);
return this.exportValueToSandbox(result);
} catch (error) {
throw this.createErrorForSandbox(error?.toString() ?? "");
}
};
}
}
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