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<!DOCTYPE html>
<!--
Copyright (c) 2015 The Chromium Authors. All rights reserved.
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->
<link rel="import" href="/tracing/base/base.html">
<link rel="import" href="/tracing/base/math/range_utils.html">
<link rel="import" href="/tracing/core/auditor.html">
<link rel="import" href="/tracing/model/event_info.html">
<link rel="import" href="/tracing/model/user_model/animation_expectation.html">
<link rel="import" href="/tracing/model/user_model/response_expectation.html">
<link rel="import" href="/tracing/model/user_model/user_expectation.html">
<script>
'use strict';
tr.exportTo('tr.importer', function() {
// This is an intermediate data format between InputLatencyAsyncSlices and
// Responses and Animations.
function ProtoExpectation(type, initiatorType) {
this.type = type;
this.initiatorType = initiatorType;
this.start = Infinity;
this.end = -Infinity;
this.associatedEvents = new tr.model.EventSet();
this.isAnimationBegin = false;
}
ProtoExpectation.RESPONSE_TYPE = 'r';
ProtoExpectation.ANIMATION_TYPE = 'a';
// Explicitly ignore some input events to allow
// UserModelBuilder.checkAllInputEventsHandled() to determine which events
// were unintentionally ignored due to a bug.
ProtoExpectation.IGNORED_TYPE = 'ignored';
/**
* Combine initiator titles by selecting the initiator title first in a
* hard-coded hierarchy. Higher up in the hierarchy are more "specific"
* initiator titles (e.g. a scroll is higher than a touch, because a
* touch could mean many different things, of which a scroll is one)
*/
const INITIATOR_HIERARCHY = [
tr.model.um.INITIATOR_TYPE.PINCH,
tr.model.um.INITIATOR_TYPE.FLING,
tr.model.um.INITIATOR_TYPE.MOUSE_WHEEL,
tr.model.um.INITIATOR_TYPE.SCROLL,
tr.model.um.INITIATOR_TYPE.VR,
tr.model.um.INITIATOR_TYPE.VIDEO,
tr.model.um.INITIATOR_TYPE.WEBGL,
tr.model.um.INITIATOR_TYPE.CSS,
tr.model.um.INITIATOR_TYPE.MOUSE,
tr.model.um.INITIATOR_TYPE.KEYBOARD,
tr.model.um.INITIATOR_TYPE.TAP,
tr.model.um.INITIATOR_TYPE.TOUCH
];
function combineInitiatorTypes(title1, title2) {
for (const item of INITIATOR_HIERARCHY) {
if (title1 === item || title2 === item) return item;
}
throw new Error('Invalid titles in combineInitiatorTypes');
}
ProtoExpectation.prototype = {
get isValid() {
return this.end > this.start;
},
// Return true if any associatedEvent's typeName is in typeNames.
containsTypeNames(typeNames) {
return this.associatedEvents.some(
x => typeNames.indexOf(x.typeName) >= 0);
},
containsSliceTitle(title) {
return this.associatedEvents.some(x => title === x.title);
},
createInteractionRecord(model) {
if (this.type !== ProtoExpectation.IGNORED_TYPE && !this.isValid) {
model.importWarning({
type: 'ProtoExpectation',
message: 'Please file a bug with this trace. ' + this.debug(),
showToUser: true
});
return undefined;
}
const duration = this.end - this.start;
let ir = undefined;
switch (this.type) {
case ProtoExpectation.RESPONSE_TYPE:
ir = new tr.model.um.ResponseExpectation(
model, this.initiatorType, this.start, duration,
this.isAnimationBegin);
break;
case ProtoExpectation.ANIMATION_TYPE:
ir = new tr.model.um.AnimationExpectation(
model, this.initiatorType, this.start, duration);
break;
}
if (!ir) return undefined;
ir.sourceEvents.addEventSet(this.associatedEvents);
function pushAssociatedEvents(event) {
ir.associatedEvents.push(event);
// |event| is either an InputLatencyAsyncSlice (which collects all of
// its associated events transitively) or a CSS Animation (which doesn't
// have any associated events). So this does not need to recurse.
if (event.associatedEvents) {
ir.associatedEvents.addEventSet(event.associatedEvents);
}
}
this.associatedEvents.forEach(function(event) {
pushAssociatedEvents(event);
// Old-style InputLatencyAsyncSlices have subSlices.
if (event.subSlices) {
event.subSlices.forEach(pushAssociatedEvents);
}
});
return ir;
},
// Merge the other ProtoExpectation into this one.
// The types need not match: ignored ProtoExpectations might be merged
// into overlapping ProtoExpectations, and Touch-only Animations are merged
// into Tap Responses.
merge(other) {
this.initiatorType = combineInitiatorTypes(
this.initiatorType, other.initiatorType);
// Don't use pushEvent(), which would lose special start, end.
this.associatedEvents.addEventSet(other.associatedEvents);
this.start = Math.min(this.start, other.start);
this.end = Math.max(this.end, other.end);
if (other.isAnimationBegin) {
this.isAnimationBegin = true;
}
},
// Include |event| in this ProtoExpectation, expanding start/end to include
// it.
pushEvent(event) {
// Usually, this method will be called while iterating over a list of
// events sorted by start time, so this method won't usually change
// this.start. However, this will sometimes be called for
// ProtoExpectations created by previous handlers, in which case
// event.start could possibly be before this.start.
this.start = Math.min(this.start, event.start);
this.end = Math.max(this.end, event.end);
this.associatedEvents.push(event);
},
// Include |sample| in this ProtoExpectation, expanding start/end to
// include it.
pushSample(sample) {
this.start = Math.min(this.start, sample.timestamp);
this.end = Math.max(this.end, sample.timestamp);
this.associatedEvents.push(sample);
},
// Returns true if timestamp is contained in this ProtoExpectation.
containsTimestampInclusive(timestamp) {
return (this.start <= timestamp) && (timestamp <= this.end);
},
// Return true if the other event intersects this ProtoExpectation.
intersects(other) {
// http://stackoverflow.com/questions/325933
return (other.start < this.end) && (other.end > this.start);
},
isNear(event, threshold) {
return (this.end + threshold) > event.start;
},
// Return a string describing this ProtoExpectation for debugging.
debug() {
let debugString = this.type + '(';
debugString += parseInt(this.start) + ' ';
debugString += parseInt(this.end);
this.associatedEvents.forEach(function(event) {
debugString += ' ' + event.typeName;
});
return debugString + ')';
}
};
return {
ProtoExpectation,
};
});
</script>
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