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// Copyright 2014 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.
#include "third_party/blink/renderer/core/animation/timing_input.h"
#include "third_party/blink/renderer/bindings/core/v8/unrestricted_double_or_keyframe_animation_options.h"
#include "third_party/blink/renderer/bindings/core/v8/unrestricted_double_or_keyframe_effect_options.h"
#include "third_party/blink/renderer/core/animation/animation_effect.h"
#include "third_party/blink/renderer/core/animation/animation_input_helpers.h"
#include "third_party/blink/renderer/core/animation/effect_timing.h"
#include "third_party/blink/renderer/core/animation/keyframe_effect_options.h"
#include "third_party/blink/renderer/core/animation/optional_effect_timing.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
namespace blink {
namespace {
Timing::FillMode ConvertFillMode(const String& fill_mode) {
if (fill_mode == "none")
return Timing::FillMode::NONE;
if (fill_mode == "backwards")
return Timing::FillMode::BACKWARDS;
if (fill_mode == "both")
return Timing::FillMode::BOTH;
if (fill_mode == "forwards")
return Timing::FillMode::FORWARDS;
DCHECK_EQ(fill_mode, "auto");
return Timing::FillMode::AUTO;
}
Timing::PlaybackDirection ConvertPlaybackDirection(const String& direction) {
if (direction == "reverse")
return Timing::PlaybackDirection::REVERSE;
if (direction == "alternate")
return Timing::PlaybackDirection::ALTERNATE_NORMAL;
if (direction == "alternate-reverse")
return Timing::PlaybackDirection::ALTERNATE_REVERSE;
DCHECK_EQ(direction, "normal");
return Timing::PlaybackDirection::NORMAL;
}
base::Optional<AnimationTimeDelta> ConvertIterationDuration(
const UnrestrictedDoubleOrString& duration) {
if (duration.IsUnrestrictedDouble()) {
return AnimationTimeDelta::FromMillisecondsD(
duration.GetAsUnrestrictedDouble());
}
return base::nullopt;
}
Timing ConvertEffectTiming(const EffectTiming* timing_input,
Document* document,
ExceptionState& exception_state) {
Timing timing_output;
TimingInput::Update(timing_output, timing_input, document, exception_state);
if (!exception_state.HadException()) {
timing_output.AssertValid();
}
return timing_output;
}
template <class V>
bool UpdateValueIfChanged(V& lhs, const V& rhs) {
if (lhs != rhs) {
lhs = rhs;
return true;
}
return false;
}
} // namespace
Timing TimingInput::Convert(
const UnrestrictedDoubleOrKeyframeEffectOptions& options,
Document* document,
ExceptionState& exception_state) {
if (options.IsNull()) {
return Timing::Defaults();
}
if (options.IsKeyframeEffectOptions()) {
return ConvertEffectTiming(options.GetAsKeyframeEffectOptions(), document,
exception_state);
}
DCHECK(options.IsUnrestrictedDouble());
// https://drafts.csswg.org/web-animations-1/#dom-keyframeeffect-keyframeeffect
// If options is a double,
// Let timing input be a new EffectTiming object with all members set to
// their default values and duration set to options.
EffectTiming* timing_input = EffectTiming::Create();
timing_input->setDuration(UnrestrictedDoubleOrString::FromUnrestrictedDouble(
options.GetAsUnrestrictedDouble()));
return ConvertEffectTiming(timing_input, document, exception_state);
}
Timing TimingInput::Convert(
const UnrestrictedDoubleOrKeyframeAnimationOptions& options,
Document* document,
ExceptionState& exception_state) {
if (options.IsNull()) {
return Timing::Defaults();
}
if (options.IsKeyframeAnimationOptions()) {
return ConvertEffectTiming(options.GetAsKeyframeAnimationOptions(),
document, exception_state);
}
DCHECK(options.IsUnrestrictedDouble());
// https://drafts.csswg.org/web-animations-1/#dom-keyframeeffect-keyframeeffect
// If options is a double,
// Let timing input be a new EffectTiming object with all members set to
// their default values and duration set to options.
EffectTiming* timing_input = EffectTiming::Create();
timing_input->setDuration(UnrestrictedDoubleOrString::FromUnrestrictedDouble(
options.GetAsUnrestrictedDouble()));
return ConvertEffectTiming(timing_input, document, exception_state);
}
template <class InputTiming>
bool TimingInput::Update(Timing& timing,
const InputTiming* input,
Document* document,
ExceptionState& exception_state) {
// 1. If the iterationStart member of input is present and less than zero,
// throw a TypeError and abort this procedure.
if (input->hasIterationStart() && input->iterationStart() < 0) {
exception_state.ThrowTypeError("iterationStart must be non-negative");
return false;
}
// 2. If the iterations member of input is present, and less than zero or is
// the value NaN, throw a TypeError and abort this procedure.
if (input->hasIterations() &&
(std::isnan(input->iterations()) || input->iterations() < 0)) {
exception_state.ThrowTypeError("iterationCount must be non-negative");
return false;
}
// 3. If the duration member of input is present, and less than zero or is the
// value NaN, throw a TypeError and abort this procedure.
//
// We also throw if the value is a string but not 'auto', as per
// https://github.com/w3c/csswg-drafts/issues/247 .
if (input->hasDuration()) {
const char* error_message = "duration must be non-negative or auto";
if (input->duration().IsUnrestrictedDouble()) {
double duration = input->duration().GetAsUnrestrictedDouble();
if (std::isnan(duration) || duration < 0) {
exception_state.ThrowTypeError(error_message);
return false;
}
} else if (input->duration().GetAsString() != "auto") {
exception_state.ThrowTypeError(error_message);
return false;
}
}
// 4. If the easing member of input is present but cannot be parsed using the
// <timing-function> production [CSS-TIMING-1], throw a TypeError and abort
// this procedure.
scoped_refptr<TimingFunction> timing_function;
if (input->hasEasing()) {
timing_function = AnimationInputHelpers::ParseTimingFunction(
input->easing(), document, exception_state);
if (!timing_function) {
DCHECK(exception_state.HadException());
return false;
}
}
// 5. Assign each member present in input to the corresponding timing property
// of effect as follows:
bool changed = false;
if (input->hasDelay()) {
DCHECK(std::isfinite(input->delay()));
changed |= UpdateValueIfChanged(timing.start_delay, input->delay() / 1000);
}
if (input->hasEndDelay()) {
DCHECK(std::isfinite(input->endDelay()));
changed |= UpdateValueIfChanged(timing.end_delay, input->endDelay() / 1000);
}
if (input->hasFill()) {
changed |=
UpdateValueIfChanged(timing.fill_mode, ConvertFillMode(input->fill()));
}
if (input->hasIterationStart()) {
changed |=
UpdateValueIfChanged(timing.iteration_start, input->iterationStart());
}
if (input->hasIterations()) {
changed |=
UpdateValueIfChanged(timing.iteration_count, input->iterations());
}
if (input->hasDuration()) {
changed |= UpdateValueIfChanged(
timing.iteration_duration, ConvertIterationDuration(input->duration()));
}
if (input->hasDirection()) {
changed |= UpdateValueIfChanged(
timing.direction, ConvertPlaybackDirection(input->direction()));
}
if (timing_function) {
// We need to compare the timing functions by underlying value to see if
// they have really changed, but update the scoped_refptr, so cant use
// UpdateValueIfChanged.
changed |= (*timing.timing_function != *timing_function);
timing.timing_function = timing_function;
}
return changed;
}
// Export the OptionalEffectTiming version for AnimationEffect::updateTiming.
template CORE_EXPORT bool TimingInput::Update(Timing&,
const OptionalEffectTiming*,
Document*,
ExceptionState&);
} // namespace blink
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