mirror of
https://github.com/squidfunk/mkdocs-material.git
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96 lines
2.8 KiB
JavaScript
96 lines
2.8 KiB
JavaScript
/*
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* Copyright (c) 2016-2017 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 Lock {
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/**
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* Lock body for full-screen search modal
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*
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* @constructor
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*
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* @property {HTMLInputElement} el_ - TODO
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* @property {number} offset_ - TODO
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*
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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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const ref = (typeof el === "string")
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? document.querySelector(el)
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: el
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if (!(ref instanceof HTMLInputElement))
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throw new ReferenceError
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this.el_ = ref
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}
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/**
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* Setup locked state
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*/
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setup() {
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this.update()
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}
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/**
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* Update locked state
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*/
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update() {
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/* Entering search mode */
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if (this.el_.checked) {
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this.offset_ = window.pageYOffset
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/* Scroll to top after transition, to omit flickering */
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setTimeout(() => {
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window.scrollTo(0, 0)
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/* Lock body after finishing transition */
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if (this.el_.checked) {
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document.body.dataset.mdState = "lock"
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}
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}, 400)
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/* Exiting search mode */
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} else {
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document.body.dataset.mdState = ""
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/* Scroll to former position, but wait for 100ms to prevent flashes on
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iOS. A short timeout seems to do the trick */
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setTimeout(() => {
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if (typeof this.offset_ !== "undefined")
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window.scrollTo(0, this.offset_)
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}, 100)
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}
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}
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/**
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* Reset locked state and page y-offset
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*/
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reset() {
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if (document.body.dataset.mdState === "lock")
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window.scrollTo(0, this.offset_)
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document.body.dataset.mdState = ""
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}
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}
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