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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* 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 {Task} = require("devtools/shared/task");
const EventEmitter = require("devtools/shared/event-emitter");
const {createNode, TimeScale} = require("devtools/client/animationinspector/utils");
const {Keyframes} = require("devtools/client/animationinspector/components/keyframes");
/**
* UI component responsible for displaying detailed information for a given
* animation.
* This includes information about timing, easing, keyframes, animated
* properties.
*
* @param {Object} serverTraits The list of server-side capabilities.
*/
function AnimationDetails(serverTraits) {
EventEmitter.decorate(this);
this.onFrameSelected = this.onFrameSelected.bind(this);
this.keyframeComponents = [];
this.serverTraits = serverTraits;
}
exports.AnimationDetails = AnimationDetails;
AnimationDetails.prototype = {
// These are part of frame objects but are not animated properties. This
// array is used to skip them.
NON_PROPERTIES: ["easing", "composite", "computedOffset", "offset"],
init: function (containerEl) {
this.containerEl = containerEl;
},
destroy: function () {
this.unrender();
this.containerEl = null;
this.serverTraits = null;
},
unrender: function () {
for (let component of this.keyframeComponents) {
component.off("frame-selected", this.onFrameSelected);
component.destroy();
}
this.keyframeComponents = [];
while (this.containerEl.firstChild) {
this.containerEl.firstChild.remove();
}
},
getPerfDataForProperty: function (animation, propertyName) {
let warning = "";
let className = "";
if (animation.state.propertyState) {
let isRunningOnCompositor;
for (let propState of animation.state.propertyState) {
if (propState.property == propertyName) {
isRunningOnCompositor = propState.runningOnCompositor;
if (typeof propState.warning != "undefined") {
warning = propState.warning;
}
break;
}
}
if (isRunningOnCompositor && warning == "") {
className = "oncompositor";
} else if (!isRunningOnCompositor && warning != "") {
className = "warning";
}
}
return {className, warning};
},
/**
* Get a list of the tracks of the animation actor
* @return {Object} A list of tracks, one per animated property, each
* with a list of keyframes
*/
getTracks: Task.async(function* () {
let tracks = {};
/*
* getFrames is a AnimationPlayorActor method that returns data about the
* keyframes of the animation.
* In FF48, the data it returns change, and will hold only longhand
* properties ( e.g. borderLeftWidth ), which does not match what we
* want to display in the animation detail.
* A new AnimationPlayerActor function, getProperties, is introduced,
* that returns the animated css properties of the animation and their
* keyframes values.
* If the animation actor has the getProperties function, we use it, and if
* not, we fall back to getFrames, which then returns values we used to
* handle.
*/
if (this.serverTraits.hasGetProperties) {
let properties = yield this.animation.getProperties();
for (let {name, values} of properties) {
if (!tracks[name]) {
tracks[name] = [];
}
for (let {value, offset} of values) {
tracks[name].push({value, offset});
}
}
} else {
let frames = yield this.animation.getFrames();
for (let frame of frames) {
for (let name in frame) {
if (this.NON_PROPERTIES.indexOf(name) != -1) {
continue;
}
if (!tracks[name]) {
tracks[name] = [];
}
tracks[name].push({
value: frame[name],
offset: frame.computedOffset
});
}
}
}
return tracks;
}),
render: Task.async(function* (animation) {
this.unrender();
if (!animation) {
return;
}
this.animation = animation;
// We might have been destroyed in the meantime, or the component might
// have been re-rendered.
if (!this.containerEl || this.animation !== animation) {
return;
}
// Build an element for each animated property track.
this.tracks = yield this.getTracks(animation, this.serverTraits);
// Useful for tests to know when the keyframes have been retrieved.
this.emit("keyframes-retrieved");
for (let propertyName in this.tracks) {
let line = createNode({
parent: this.containerEl,
attributes: {"class": "property"}
});
let {warning, className} =
this.getPerfDataForProperty(animation, propertyName);
createNode({
// text-overflow doesn't work in flex items, so we need a second level
// of container to actually have an ellipsis on the name.
// See bug 972664.
parent: createNode({
parent: line,
attributes: {"class": "name"}
}),
textContent: getCssPropertyName(propertyName),
attributes: {"title": warning,
"class": className}
});
// Add the keyframes diagram for this property.
let framesWrapperEl = createNode({
parent: line,
attributes: {"class": "track-container"}
});
let framesEl = createNode({
parent: framesWrapperEl,
attributes: {"class": "frames"}
});
// Scale the list of keyframes according to the current time scale.
let {x, w} = TimeScale.getAnimationDimensions(animation);
framesEl.style.left = `${x}%`;
framesEl.style.width = `${w}%`;
let keyframesComponent = new Keyframes();
keyframesComponent.init(framesEl);
keyframesComponent.render({
keyframes: this.tracks[propertyName],
propertyName: propertyName,
animation: animation
});
keyframesComponent.on("frame-selected", this.onFrameSelected);
this.keyframeComponents.push(keyframesComponent);
}
}),
onFrameSelected: function (e, args) {
// Relay the event up, it's needed in parents too.
this.emit(e, args);
}
};
/**
* Turn propertyName into property-name.
* @param {String} jsPropertyName A camelcased CSS property name. Typically
* something that comes out of computed styles. E.g. borderBottomColor
* @return {String} The corresponding CSS property name: border-bottom-color
*/
function getCssPropertyName(jsPropertyName) {
return jsPropertyName.replace(/[A-Z]/g, "-$&").toLowerCase();
}
exports.getCssPropertyName = getCssPropertyName;
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