mirror of
https://github.com/squidfunk/mkdocs-material.git
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91 lines
2.9 KiB
JavaScript
91 lines
2.9 KiB
JavaScript
/*
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* Copyright (c) 2016 Martin Donath <martin.donath@squidfunk.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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/* ----------------------------------------------------------------------------
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* Class
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* ------------------------------------------------------------------------- */
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export default class Collapse {
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/**
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* Expand or collapse navigation on toggle
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*
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* @constructor
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* @param {(string|HTMLElement)} el - Selector or HTML element
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*/
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constructor(el) {
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this.el_ = (typeof el === "string")
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? document.querySelector(el)
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: el
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}
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/**
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* Animate expand and collapse smoothly
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*/
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update() {
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const current = this.el_.getBoundingClientRect().height
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/* Expanded, so collapse */
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if (current) {
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this.el_.style.maxHeight = `${current}px`
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requestAnimationFrame(() => {
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this.el_.dataset.mdState = "animate"
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this.el_.style.maxHeight = "0px"
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})
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/* Collapsed, so expand */
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} else {
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this.el_.dataset.mdState = "expand"
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this.el_.style.maxHeight = ""
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/* Read height and unset pseudo-toggled state */
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const height = this.el_.getBoundingClientRect().height
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this.el_.dataset.mdState = ""
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/* Set initial state and animate */
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this.el_.style.maxHeight = "0px"
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requestAnimationFrame(() => {
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this.el_.dataset.mdState = "animate"
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this.el_.style.maxHeight = `${height}px`
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})
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}
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/* Remove state on end of transition */
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const end = ev => {
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ev.target.dataset.mdState = ""
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ev.target.style.maxHeight = ""
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/* Only fire once, so directly remove event listener */
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ev.target.removeEventListener("transitionend", end, false)
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}
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this.el_.addEventListener("transitionend", end, false)
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}
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/**
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* Reset height and pseudo-toggled state
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*/
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reset() {
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this.el_.dataset.mdState = ""
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this.el_.style.maxHeight = ""
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}
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}
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