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import {PressureManager, PressureManagerReceiver, PressureStatus} from '/gen/services/device/public/mojom/pressure_manager.mojom.m.js'
import {PressureSource, PressureState} from '/gen/services/device/public/mojom/pressure_update.mojom.m.js'
class MockPressureService {
constructor() {
this.receiver_ = new PressureManagerReceiver(this);
this.interceptor_ =
new MojoInterfaceInterceptor(PressureManager.$interfaceName);
this.interceptor_.oninterfacerequest = e => {
this.receiver_.$.bindHandle(e.handle);
};
this.reset();
this.mojomSourceType_ = new Map([['cpu', PressureSource.kCpu]]);
this.mojomStateType_ = new Map([
['nominal', PressureState.kNominal], ['fair', PressureState.kFair],
['serious', PressureState.kSerious], ['critical', PressureState.kCritical]
]);
this.pressureServiceReadingTimerId_ = null;
}
start() {
this.interceptor_.start();
}
stop() {
this.stopPlatformCollector();
this.receiver_.$.close();
this.interceptor_.stop();
// Wait for an event loop iteration to let any pending mojo commands in
// the pressure service finish.
return new Promise(resolve => setTimeout(resolve, 0));
}
reset() {
this.observers_ = [];
this.pressureUpdate_ = null;
this.pressureServiceReadingTimerId_ = null;
this.pressureStatus_ = PressureStatus.kOk;
this.updatesDelivered_ = 0;
}
async addClient(observer, source) {
if (this.observers_.indexOf(observer) >= 0)
throw new Error('addClient() has already been called');
// TODO(crbug.com/1342184): Consider other sources.
// For now, "cpu" is the only source.
if (source !== PressureSource.kCpu)
throw new Error('Call addClient() with a wrong PressureSource');
observer.onConnectionError.addListener(() => {
// Remove this observer from observer array.
this.observers_.splice(this.observers_.indexOf(observer), 1);
});
this.observers_.push(observer);
return {status: this.pressureStatus_};
}
startPlatformCollector(sampleRate) {
if (sampleRate === 0)
return;
if (this.pressureServiceReadingTimerId_ != null)
this.stopPlatformCollector();
// The following code for calculating the timestamp was taken from
// https://source.chromium.org/chromium/chromium/src/+/main:third_party/
// blink/web_tests/http/tests/resources/
// geolocation-mock.js;l=131;drc=37a9b6c03b9bda9fcd62fc0e5e8016c278abd31f
// The new Date().getTime() returns the number of milliseconds since the
// UNIX epoch (1970-01-01 00::00:00 UTC), while |internalValue| of the
// device.mojom.PressureUpdate represents the value of microseconds since
// the Windows FILETIME epoch (1601-01-01 00:00:00 UTC). So add the delta
// when sets the |internalValue|. See more info in //base/time/time.h.
const windowsEpoch = Date.UTC(1601, 0, 1, 0, 0, 0, 0);
const unixEpoch = Date.UTC(1970, 0, 1, 0, 0, 0, 0);
// |epochDeltaInMs| equals to base::Time::kTimeTToMicrosecondsOffset.
const epochDeltaInMs = unixEpoch - windowsEpoch;
const timeout = (1 / sampleRate) * 1000;
this.pressureServiceReadingTimerId_ = self.setInterval(() => {
if (this.pressureUpdate_ === null || this.observers_.length === 0)
return;
this.pressureUpdate_.timestamp = {
internalValue: BigInt((new Date().getTime() + epochDeltaInMs) * 1000)
};
for (let observer of this.observers_)
observer.onPressureUpdated(this.pressureUpdate_);
this.updatesDelivered_++;
}, timeout);
}
stopPlatformCollector() {
if (this.pressureServiceReadingTimerId_ != null) {
self.clearInterval(this.pressureServiceReadingTimerId_);
this.pressureServiceReadingTimerId_ = null;
}
this.updatesDelivered_ = 0;
}
updatesDelivered() {
return this.updatesDelivered_;
}
setPressureUpdate(source, state) {
if (!this.mojomSourceType_.has(source))
throw new Error(`PressureSource '${source}' is invalid`);
if (!this.mojomStateType_.has(state))
throw new Error(`PressureState '${state}' is invalid`);
this.pressureUpdate_ = {
source: this.mojomSourceType_.get(source),
state: this.mojomStateType_.get(state),
};
}
setExpectedFailure(expectedException) {
assert_true(
expectedException instanceof DOMException,
'setExpectedFailure() expects a DOMException instance');
if (expectedException.name === 'NotSupportedError') {
this.pressureStatus_ = PressureStatus.kNotSupported;
} else {
throw new TypeError(
`Unexpected DOMException '${expectedException.name}'`);
}
}
}
export const mockPressureService = new MockPressureService();
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