diff options
Diffstat (limited to 'content')
-rw-r--r-- | content/lightbox.js | 50 |
1 files changed, 44 insertions, 6 deletions
diff --git a/content/lightbox.js b/content/lightbox.js index e57d37c..a3e3bc0 100644 --- a/content/lightbox.js +++ b/content/lightbox.js | |||
@@ -1,5 +1,7 @@ | |||
1 | (() => { | 1 | (() => { |
2 | let currentIndex = 0; | 2 | let currentIndex = 0; |
3 | let visible = false; | ||
4 | |||
3 | const mainEl = document.querySelector("main"); | 5 | const mainEl = document.querySelector("main"); |
4 | const lightboxEl = document.querySelector(".c-lightbox"); | 6 | const lightboxEl = document.querySelector(".c-lightbox"); |
5 | const lightboxBgEl = document.querySelector(".c-lightbox__bg"); | 7 | const lightboxBgEl = document.querySelector(".c-lightbox__bg"); |
@@ -10,26 +12,34 @@ | |||
10 | const figureEls = Array.from(mainEl.querySelectorAll("figure")).map(el => el.querySelector("a")); | 12 | const figureEls = Array.from(mainEl.querySelectorAll("figure")).map(el => el.querySelector("a")); |
11 | 13 | ||
12 | const show = () => { | 14 | const show = () => { |
15 | visible = true; | ||
13 | lightboxEl.classList.add("is-shown"); | 16 | lightboxEl.classList.add("is-shown"); |
14 | } | 17 | } |
15 | 18 | ||
16 | const hide = () => { | 19 | const hide = () => { |
20 | visible = false; | ||
17 | lightboxEl.classList.remove("is-shown"); | 21 | lightboxEl.classList.remove("is-shown"); |
18 | } | 22 | } |
19 | 23 | ||
20 | const setIndex = (i) => { | 24 | const setIndex = (i) => { |
21 | currentIndex = i; | 25 | currentIndex = i; |
22 | lightboxImgEl.src = figureEls[i].href; | 26 | lightboxImgEl.src = figureEls[i].href; |
27 | lightboxPrevEl.classList.toggle("u-dn", i === 0); | ||
28 | lightboxNextEl.classList.toggle("u-dn", i === figureEls.length - 1); | ||
29 | }; | ||
30 | |||
31 | const prev = () => { | ||
32 | setIndex(currentIndex === 0 ? currentIndex : currentIndex - 1); | ||
33 | }; | ||
34 | |||
35 | const next = () => { | ||
36 | setIndex(currentIndex === figureEls.length - 1 ? currentIndex : currentIndex + 1); | ||
23 | }; | 37 | }; |
24 | 38 | ||
25 | lightboxBgEl.addEventListener("click", hide); | 39 | lightboxBgEl.addEventListener("click", hide); |
26 | lightboxCloseEl.addEventListener("click", hide); | 40 | lightboxCloseEl.addEventListener("click", hide); |
27 | lightboxPrevEl.addEventListener("click", () => { | 41 | lightboxPrevEl.addEventListener("click", prev); |
28 | setIndex(currentIndex === 0 ? figureEls.length - 1 : currentIndex - 1); | 42 | lightboxNextEl.addEventListener("click", next); |
29 | }); | ||
30 | lightboxNextEl.addEventListener("click", () => { | ||
31 | setIndex(currentIndex === figureEls.length - 1 ? 0 : currentIndex + 1); | ||
32 | }); | ||
33 | 43 | ||
34 | figureEls.forEach((figureEl, i) => { | 44 | figureEls.forEach((figureEl, i) => { |
35 | figureEl.addEventListener("click", e => { | 45 | figureEl.addEventListener("click", e => { |
@@ -38,4 +48,32 @@ | |||
38 | setIndex(i); | 48 | setIndex(i); |
39 | }) | 49 | }) |
40 | }); | 50 | }); |
51 | |||
52 | window.addEventListener("keydown", e => { | ||
53 | if (e.defaultPrevented || !visible) { | ||
54 | return; | ||
55 | } | ||
56 | |||
57 | switch (e.key) { | ||
58 | case "Left": | ||
59 | case "ArrowLeft": | ||
60 | prev(); | ||
61 | break; | ||
62 | |||
63 | case "Right": | ||
64 | case "ArrowRight": | ||
65 | next(); | ||
66 | break; | ||
67 | |||
68 | case "Esc": | ||
69 | case "Escape": | ||
70 | hide(); | ||
71 | break; | ||
72 | |||
73 | default: | ||
74 | return; | ||
75 | } | ||
76 | |||
77 | e.preventDefault(); | ||
78 | }, true); | ||
41 | })(); | 79 | })(); |