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/*
* Copyright (C) 2016 Devin Rousso <webkit@devinrousso.com>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
WI.SpringEditor = class SpringEditor extends WI.Object
{
constructor()
{
super();
this._element = document.createElement("div");
this._element.classList.add("spring-editor");
this._previewContainer = this._element.createChild("div", "spring-preview");
this._previewContainer.title = WI.UIString("Restart animation");
this._previewContainer.addEventListener("mousedown", this._resetPreviewAnimation.bind(this));
this._previewElement = this._previewContainer.createChild("div");
this._previewElement.addEventListener("transitionend", this.debounce(500)._resetPreviewAnimation);
this._timingContainer = this._element.createChild("div", "spring-timing");
this._timingElement = this._timingContainer.createChild("div");
this._numberInputContainer = this._element.createChild("div", "number-input-container");
function createInputsForParameter(id, title)
{
let row = this._numberInputContainer.createChild("div", `number-input-row ${id}`);
row.createChild("div", "number-input-row-title").textContent = title;
let sliderKey = `_${id}Slider`;
this[sliderKey] = row.createChild("input");
this[sliderKey].type = "range";
this[sliderKey].addEventListener("input", this._handleNumberSliderInput.bind(this));
this[sliderKey].addEventListener("mousedown", this._handleNumberSliderMousedown.bind(this));
this[sliderKey].addEventListener("mouseup", this._handleNumberSliderMouseup.bind(this));
let inputKey = `_${id}Input`;
this[inputKey] = row.createChild("input");
this[inputKey].type = "number";
this[inputKey].addEventListener("input", this._handleNumberInputInput.bind(this));
this[inputKey].addEventListener("keydown", this._handleNumberInputKeydown.bind(this));
}
createInputsForParameter.call(this, "mass", WI.UIString("Mass"));
this._massInput.min = this._massSlider.min = 1;
createInputsForParameter.call(this, "stiffness", WI.UIString("Stiffness"));
this._stiffnessInput.min = this._stiffnessSlider.min = 1;
createInputsForParameter.call(this, "damping", WI.UIString("Damping"));
this._dampingInput.min = this._dampingSlider.min = 0;
createInputsForParameter.call(this, "initialVelocity", WI.UIString("Initial Velocity"));
this._spring = new WI.Spring(1, 100, 10, 0);
}
// Public
get element()
{
return this._element;
}
get spring()
{
return this._spring;
}
set spring(spring)
{
if (!spring)
return;
let isSpring = spring instanceof WI.Spring;
console.assert(isSpring);
if (!isSpring)
return;
this._spring = spring;
this._massInput.value = this._massSlider.value = this._spring.mass;
this._stiffnessInput.value = this._stiffnessSlider.value = this._spring.stiffness;
this._dampingInput.value = this._dampingSlider.value = this._spring.damping;
this._initialVelocityInput.value = this._initialVelocitySlider.value = this._spring.initialVelocity;
this._resetPreviewAnimation();
}
// Private
_handleNumberInputInput(event)
{
this._changeSpringForInput(event.target, event.target.value);
}
_handleNumberInputKeydown(event)
{
let shift = 0;
if (event.keyIdentifier === "Up")
shift = 1;
else if (event.keyIdentifier === "Down")
shift = -1;
if (!shift)
return;
if (event.shiftKey)
shift *= 10;
else if (event.altKey)
shift /= 10;
let value = parseFloat(event.target.value) || 0;
this._changeSpringForInput(event.target, value + shift);
event.preventDefault();
}
_handleNumberSliderInput(event)
{
this._changeSpringForInput(event.target, event.target.value);
}
_handleNumberSliderMousedown(event)
{
this._changeSpringForInput(event.target, event.target.value);
}
_handleNumberSliderMouseup(event)
{
this._changeSpringForInput(event.target, event.target.value);
}
_changeSpringForInput(target, value)
{
value = parseFloat(value) || 0;
switch (target) {
case this._massInput:
case this._massSlider:
if (this._spring.mass === value)
return;
this._spring.mass = Math.max(1, value);
this._massInput.value = this._massSlider.value = this._spring.mass.maxDecimals(3);
break;
case this._stiffnessInput:
case this._stiffnessSlider:
if (this._spring.stiffness === value)
return;
this._spring.stiffness = Math.max(1, value);
this._stiffnessInput.value = this._stiffnessSlider.value = this._spring.stiffness.maxDecimals(3);
break;
case this._dampingInput:
case this._dampingSlider:
if (this._spring.damping === value)
return;
this._spring.damping = Math.max(0, value);
this._dampingInput.value = this._dampingSlider.value = this._spring.damping.maxDecimals(3);
break;
case this._initialVelocityInput:
case this._initialVelocitySlider:
if (this._spring.initialVelocity === value)
return;
this._spring.initialVelocity = value;
this._initialVelocityInput.value = this._initialVelocitySlider.value = this._spring.initialVelocity.maxDecimals(3);
break;
default:
WI.reportInternalError("Input event fired for unrecognized element");
return;
}
this.dispatchEventToListeners(WI.SpringEditor.Event.SpringChanged, {spring: this._spring});
this._resetPreviewAnimation();
}
_resetPreviewAnimation(event)
{
this._previewContainer.classList.remove("animate");
this._previewElement.style.transitionTimingFunction = null;
this._previewElement.style.transform = null;
this._timingContainer.classList.remove("animate");
this._timingElement.style.transform = null;
// Only reset the duration text when a spring parameter is changed.
if (!event)
this._timingContainer.dataset.duration = "0";
this.debounce(500)._updatePreviewAnimation(event);
}
_updatePreviewAnimation(event)
{
this._previewContainer.classList.add("animate");
this._previewElement.style.transitionTimingFunction = this._spring.toString();
this._timingContainer.classList.add("animate");
if (WI.resolvedLayoutDirection() === WI.LayoutDirection.RTL) {
this._previewElement.style.transform = "translateX(-85px)";
this._timingElement.style.transform = "translateX(-170px)";
} else {
this._previewElement.style.transform = "translateX(85px)";
this._timingElement.style.transform = "translateX(170px)";
}
// Only calculate the duration when a spring parameter is changed.
if (!event) {
let duration = this._spring.calculateDuration();
this._timingContainer.dataset.duration = duration.toFixed(2);
this._timingElement.style.transitionDuration = `${duration}s`;
this._previewElement.style.transitionDuration = `${duration}s`;
}
}
};
WI.SpringEditor.Event = {
SpringChanged: "spring-editor-spring-changed"
};