263 lines
8.4 KiB
JavaScript
263 lines
8.4 KiB
JavaScript
dialogs = new ReactiveArray();
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const offset = 16;
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const duration = 400;
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pushDialogStack = function({template, data, element, returnElement, callback}){
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// Generate a new _id so that Blaze knows how to shuffle the array
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const _id = Random.id();
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dialogs.push({
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_id,
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template,
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data,
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element,
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returnElement,
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callback,
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});
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};
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popDialogStack = function(result){
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const dialog = dialogs.pop();
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if (!dialog) return;
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dialog.callback && dialog.callback(result);
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};
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Template.dialogStack.helpers({
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dialogStackClass(){
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if (!dialogs.get().length) return "hide";
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},
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dialogs(){
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return dialogs.get();
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},
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dialogStyle(index){
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const length = dialogs.get().length;
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if (index >= length) return;
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const num = length - 1;
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const left = (num - index) * -offset;
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const top = (num - index) * -offset;
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return `left:${left}px; top:${top}px;`;
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},
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});
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Template.dialogStack.events({
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"click .dialog-stack .backdrop": function(event){
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if (event.target === event.currentTarget) popDialogStack();
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},
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});
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// Only supports border radius defined like "20px" or "100%"
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const transformedRadius = (radiusString, deltaWidth, deltaHeight) => {
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if (/^\d+\.?\d*px$/.test(radiusString)){
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//The radius is defined in pixel units, so get the radius as a number
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const rad = +radiusString.match(/\d+\.?\d*/)[0];
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// Set the x and y radius of the "to" element, compensating for scale
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return `${rad / deltaWidth}px / ${rad / deltaHeight}px`;
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} else if (/^\d+\.?\d*%$/.test(radiusString)) {
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//The radius is defined as a percentage, so just use it as is
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return radiusString;
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}
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};
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const imitate = (
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element, source, deltaLeft, deltaTop, deltaWidth, deltaHeight
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) => {
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element.style.transform = `translate(${deltaLeft}px, ${deltaTop}px) ` +
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`scale(${deltaWidth}, ${deltaHeight})`;
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element.style.background = $(source).css("background");
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// Imitate the border radius after transform
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const border = $(source).css("border-radius")
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const rad = transformedRadius(border, deltaWidth, deltaHeight);
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element.style.borderRadius = rad
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}
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const shrinkAnimation = ({element, reverse}) => {
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element.css({
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transform: reverse ? "scale(0) translateZ(0)" : "",
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});
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const fraction = duration / 4;
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_.defer(() => element.css({
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transition: reverse ?
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`transform ${fraction}ms ease ${duration - fraction}ms` :
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`transform ${fraction}ms ease`
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,
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transform: reverse ? "" : "scale(0) translateZ(0)",
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}));
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_.delay(() => element.css({
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transition: "",
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}), duration);
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}
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const dialogOpenAnimation = ({element, returnElement, dialog}) => {
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// hide all floaty buttons when we open the first dialog
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let fabs = $(".mini-holder paper-fab, .floatyButton").filter(
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(index, el) => el !== element && el !== returnElement
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);
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if (dialogs._array.length === 1) {
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shrinkAnimation({element: fabs});
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}
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const dialogRect = dialog.getBoundingClientRect();
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const elementRect = element.getBoundingClientRect();
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element.style.visibility = "hidden";
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returnElement = _.isFunction(returnElement) ? returnElement() : returnElement;
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if (returnElement) returnElement.style.visibility = "hidden";
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// Get how must the element change to become the dialog
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const deltaLeft = elementRect.left - dialogRect.left;
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const deltaTop = elementRect.top - dialogRect.top;
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const deltaWidth = elementRect.width / dialogRect.width;
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const deltaHeight = elementRect.height / dialogRect.height;
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// Make the dialog imitate the element, immediately
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dialog.style.transition = "none";
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imitate(dialog, element, deltaLeft, deltaTop, deltaWidth, deltaHeight);
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_.defer(() => {
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// Next frame, undo the imitation, let dialog animate back into place
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dialog.style.transition = `all ${duration}ms ease`;
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dialog.style.transform = "";
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dialog.style.borderRadius = "";
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dialog.style.background = "";
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});
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// Clean up after the animation is done and call our callback
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_.delay(() => {
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dialog.style.transition = "";
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}, duration);
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}
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const dialogCloseAnimation = ({element, returnElement, dialog, callback}) => {
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// unhide all floaty buttons when we close the last dialog
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let fabs = $(".mini-holder paper-fab, .floatyButton").filter(
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(index, el) => el !== element && el !== returnElement
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);
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if (dialogs._array.length === 0) {
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shrinkAnimation({element: fabs, reverse: true});
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}
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// We are returning to a different element
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// pop the original element back in and use the returnElement in its place
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returnElement = _.isFunction(returnElement) ? returnElement() : returnElement;
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if (returnElement && returnElement !== element){
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let originalElement = element;
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element = returnElement;
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originalElement.style.transition = "";
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originalElement.style.visibility = "";
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originalElement.style.transform = "scale(0) translateZ(0px)";
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_.defer(() => {
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originalElement.style.transition = `transform ${duration}ms ease`;
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originalElement.style.transform = "";
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});
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_.delay(() => {
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originalElement.style.transition = "";
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}, duration);
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}
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// Reset the dialog if it is mid-transition
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dialog.style.transition = "none";
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dialog.style.transform = "none";
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dialog.style.borderRadius = "";
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dialog.style.background = "";
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dialog.style.opacity = "1";
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// Get the original bounding rectangles of both elements
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const dialogRect = dialog.getBoundingClientRect();
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const elementRect = element.getBoundingClientRect();
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// Set up a clone of the original element
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// This lets us have a fixed position element which isn't clipped
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clone = element.cloneNode(true);
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clone.style.position = "fixed";
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clone.style.top = 0;
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clone.style.left = 0;
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clone.style.width = elementRect.width + "px";
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clone.style.height = elementRect.height + "px";
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clone.style.visibility = "";
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clone.style.zIndex = 2;
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// Compensate for stack moving at the same time if we are many dialogs deep
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const stackCompensation = dialogs._array.length ? 16 : 0;
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// Insert clone before its progenitor so it can inherit css correctly
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element.parentNode && element.parentNode.insertBefore(clone, element);
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// Polymer messes up fixed positioning, measure and compensate
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startingRect = clone.getBoundingClientRect();
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clone.style.top = (elementRect.top - startingRect.top + stackCompensation) +
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"px";
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clone.style.left = (elementRect.left - startingRect.left + stackCompensation) +
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"px";
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// How must the original dialog change to become the element
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const deltaLeft = dialogRect.left - elementRect.left - stackCompensation;
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const deltaTop = dialogRect.top - elementRect.top - stackCompensation;
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const deltaWidth = dialogRect.width / elementRect.width;
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const deltaHeight = dialogRect.height / elementRect.height;
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// Make the clone imitate the dialog
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clone.style.transition = "none";
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clone.style.transformOrigin = "top left"
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imitate(clone, dialog, deltaLeft, deltaTop, deltaWidth, deltaHeight);
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_.defer(() => {
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// Next frame, undo the imitation, let clone animate into its place
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clone.style.transition = `all ${duration}ms ease`;
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clone.style.transform = "";
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clone.style.borderRadius = "";
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clone.style.background = "";
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// Make the dialog follow the clone in and fade away
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dialog.style.transition = `all ${duration}ms ease, ` +
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`opacity ${duration / 2}ms linear`;
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dialog.style.opacity = 0;
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imitate(dialog, element, -deltaLeft,
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-deltaTop, 1 / deltaWidth, 1 / deltaHeight);
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});
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// Clean up after the animation is done and call our callback
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_.delay(() => {
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element.style.visibility = "";
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clone.remove();
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if (callback) callback();
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}, duration);
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};
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Template.dialogStack.onRendered(function(){
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$(".dialog-sizer")[0]._uihooks = {
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insertElement: function(node, next) {
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$(node).insertBefore(next);
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const data = Blaze.getData(node);
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if (data.element){
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// Store the reference to the element on the DOM node itself,
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// since Blaze won't keep the data around for the remove hook
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node._dialogStackElement = data.element;
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node._dialogStackReturnElement = data.returnElement;
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dialogOpenAnimation({
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element: data.element,
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returnElement: data.returnElement,
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dialog: node,
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});
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}
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},
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removeElement: function(node) {
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const element = node._dialogStackElement;
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const returnElement = node._dialogStackReturnElement;
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if (element){
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dialogCloseAnimation({
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element,
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returnElement,
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dialog: node,
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callback(){
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node.remove();
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},
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});
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} else {
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node.remove();
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}
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},
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}
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});
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Template.testDialog.events({
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"click .testButton": function(event, template){
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pushDialogStack({
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template: "testDialog",
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element: event.currentTarget,
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data: Random.id(),
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});
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},
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})
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