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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 | 1x 1x 2x 2x 1x 1x 1x 1x | import Vue from 'vue' const setup = (modal, closeFunc) => { const focusableEls = 'button, a, input, textarea, select' const focusables = Array.from(modal.querySelectorAll(focusableEls)) window.addEventListener('keydown', event => { const key = (event.key || '__unknownkey__').toLowerCase() // not sure about the capitalization const modalOpened = modal.classList.contains('opened') // close on escape key if ((key === 'escape' || key === 'esc') && modalOpened) { closeFunc() } // keep focus inside the modal if (key === 'tab' && modalOpened) { // prevent default navigation event.preventDefault() // get the tabindex of the currently focused element let focusIndex = focusables.findIndex( f => f === modal.querySelector(':focus') ) // get the tabindex of the element to focus after the keypress if (event.shiftKey) { // backwards navigation: shift-tab focusIndex-- } else { focusIndex++ } // if we go past the last focusable element if (focusIndex >= focusables.length) { // loop back to the beginning focusIndex = 0 } // if we go past the the first focusable element (by shift-tabbing, mostly) if (focusIndex < 0) { // loop back to the end focusIndex = focusables.length - 1 } focusables[focusIndex].focus() } }) } const close = name => { // console.log(`$modal: Closing ${name}`) const modal = document.getElementById(`modal_${name}`) // // console.log(modal) Eif (modal === null) return modal.classList.remove('opened') modal.setAttribute('aria-hidden', 'true') modal.setAttribute('aria-modal', 'false') // restore focus if we had any const wasFocused = document.querySelector(':focus') if (wasFocused !== null) { wasFocused.focus() } } const $modal = { show: (name, opts = { at: null, from: null, stretch: null }) => { // console.log(`$modal: Opening ${name}`) let openAt = opts.at || 'center' const calledBy = opts.from || null const modal = document.getElementById(`modal_${name}`) if (modal === null) { // eslint-disable-next-line console.warn('Not opening modal: is null') return } setup(modal, () => { close(name) }) if (openAt === 'self' && !calledBy) { throw new Error("Summoning a modal at 'self' requires a `from` option") } // calculate the position of .modal-wrapper: // - cented: centered (use display:flex) (default) // - self: from the calling element // - NUMBERxNUMBER: from a given position modal.classList.remove('centered') // clear previous open position state const wrapper = modal.querySelector('.modal-wrapper') const setPos = coords => { wrapper.style.left = wrapper.style.right = wrapper.style.top = wrapper.style.bottom = // clean everything '' for (const [coord, val] of Object.entries(coords)) { wrapper.style[coord] = val + 'px' } } if (openAt === 'self') { // Choose which self. to use // based on which one will keep the element from // overflowing outside of the viewport // get position of the calling element const { y, x } = calledBy.getBoundingClientRect() // if the calling element is in the lower part of the viewport, // show it from the bottom (self.bottom). Else, self.top. // |--> if the coords are higher == the element is // | below the half-height breakpoint const openAtY = window.innerHeight / 2 < y ? 'bottom' : 'top' // |___________________| // get the point at which we pass // into the lower-helf of the viewport // Do the same for right/left const openAtX = window.innerWidth / 2 < x ? 'right' : 'left' openAt = `self.${openAtY}.${openAtX}` } switch (openAt) { case 'center': { // easiest one, add class "centered" modal.classList.add('centered') break } case 'self.rightof': { const { top, left, width } = calledBy.getBoundingClientRect() setPos({ left: left + width + 5, top }) break } case 'self.center.horizontal': { const { top } = calledBy.getBoundingClientRect() const contentWidth = wrapper.getBoundingClientRect().width // // console.log(e) setPos({ top, left: window.innerWidth / 2 - contentWidth / 2 }) break } case 'self.center.vertical': { const { left } = calledBy.getBoundingClientRect() const contentHeight = wrapper.getBoundingClientRect().height // // console.log(e) setPos({ left, bottom: window.innerHeight / 2 + contentHeight / 2, }) break } case 'self.center': { const contentHeight = wrapper.getBoundingClientRect().height const contentWidth = wrapper.getBoundingClientRect().width // // console.log(e) setPos({ left: window.innerWidth / 2 - contentWidth / 2, bottom: window.innerHeight / 2 + contentHeight / 2, }) break } case 'self.top.left': { // get top/left coordinates of element // for absolute positionning const { top, left, width } = calledBy.getBoundingClientRect() setPos({ top, left }) if (opts.stretch === 'width') { modal.querySelector('.modal-wrapper').style.width = width + 'px' } break } case 'self.top.right': { // get top/left coordinates of element // for absolute positionning const { top, left, width } = calledBy.getBoundingClientRect() setPos({ top, right: window.innerWidth - (left + width), }) break } case 'self.bottom.right': { // get bottom/right coordinates of element // for absolute positionning const { top, left, width, height } = calledBy.getBoundingClientRect() setPos({ bottom: window.innerHeight - (top + height), right: window.innerWidth - (left + width), }) break } case 'self.bottom.left': { // get bottom/right coordinates of element // for absolute positionning const { top, left, height } = calledBy.getBoundingClientRect() setPos({ bottom: window.innerHeight - (top + height), left, }) break } case 'self.below.left': { // get bottom/right coordinates of element // for absolute positionning // eslint-disable-next-line // console.log('cehck') const { top, left, width, height } = calledBy.getBoundingClientRect() modal.classList.add('opened') const modalHeight = modal .querySelector('.modal-wrapper') .getBoundingClientRect().height modal.classList.remove('opened') setPos({ bottom: window.innerHeight - (top + modalHeight + height), left, }) if (opts.stretch === 'width') { modal.querySelector('.modal-wrapper').style.width = width + 'px' } break } default: { // specified coordinates const [top, left] = openAt.split('x') setPos({ top, left }) break } } modal.classList.add('opened') // capture the currently focused element to // get element to focus: the first [modal-autofocus] inside this modal let toFocusOnOpenModal = modal.querySelector('[modal-autofocus]') // if any autofocus element exists inside this modal if (toFocusOnOpenModal) { // the first focusable element inside [modal-autofocus] and focus it toFocusOnOpenModal = toFocusOnOpenModal // .querySelector(focusableEls) // FIXME .focus() } // set WAI-ARIA (accessibility) attrs modal.setAttribute('aria-hidden', 'false') modal.setAttribute('aria-modal', 'true') }, hide: close, } Vue.prototype.$modal = $modal Vue.prototype.$modal.open = Vue.prototype.$modal.show Vue.prototype.$modal.close = Vue.prototype.$modal.hide export default $modal |