// ==UserScript==
// @name         dc-paginate
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  dc 글을 페이지로 보기기
// @author       fienestar
// @match        https://gall.dcinside.com/board/view*
// @match        https://gall.dcinside.com/mgallery/board/view*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=dcinside.com
// @grant        none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
const SINGLE_PAGE = true;
const RIGHT_IS_NEXT = true;
const CONTROL_RIGHT_IS_NEXT = true;
const write_div = document.getElementsByClassName('write_div')[0]
function is_image_p(p){
return p.getElementsByClassName('imgwrap').length
}
function is_space_p(p){
return p.children.length === 0 || (p.children.length === 1 && p.children[0].tagName.toUpperCase() === 'BR')
}
let page_list = [[]]
for(const child of write_div.children){
if(is_image_p(child)){
child.getElementsByTagName('img')[0].style.maxHeight = '90vh';
page_list.push([child], []);
}
else page_list.at(-1).push(child);
}
const removed = [];
page_list.forEach(page => {
while(page.length !== 0 && is_space_p(page.at(0))) removed.push(page.shift());
while(page.length !== 0 && is_space_p(page.at(-1))) removed.push(page.pop());
})
page_list = page_list.filter(page => page.length !== 0);
let paginated = false;
function pagenate()
{
if(paginated) return;
paginated = true;
removed.forEach(element => element.remove());
const page_element_list = page_list.map(page => {
const div = document.createElement('div');
div.style.margin = '0 auto';
div.style.width = 'fit-content';
page.forEach(element => div.appendChild(element));
return div;
});
const page_count = page_element_list.length
const placeholder = document.createElement('p');
const left = document.createElement('p');
const right = document.createElement('p');
for(const element of [placeholder, left, right])
element.style.height = '90vh';
placeholder.style.width = '100%';
const p = document.createElement('p');
const br = document.createElement('br');
p.append(br);
write_div.prepend(placeholder, br);
const placeholder_rect = placeholder.getBoundingClientRect();
const top = placeholder_rect.y - document.body.getBoundingClientRect().y
if(SINGLE_PAGE)
left.style.right = '27.5vw';
else
left.style.right = '50vw';
right.style.left = '50vw';
for(const page of [left, right]){
page.style.position = 'absolute';
page.style.top = top + 'px';
page.style.height = '90vh';
page.style.maxHeight = '90vh';
page.style.width = placeholder_rect.width + 'px';
page.style.maxWidth = '45vw';
page.style.zIndex = '256';
document.body.prepend(page);
}
function setPage(page)
{
location.hash = `#page-${page}`
let a = SINGLE_PAGE ? 1 : 2;
// RIGHT_IS_NEXT
left.children[0]?.remove();
left.append(page_element_list[page + (!SINGLE_PAGE) * (!RIGHT_IS_NEXT)] ?? '');
if(!SINGLE_PAGE){
right.children[0]?.remove();
right.append(page_element_list[page + RIGHT_IS_NEXT] ?? '');
}
// console.log(page_element_list[page], page_element_list[page+1]);
}
let page = 0;
function applyHash()
{
if(location.hash.startsWith('#page-')){
page = +location.hash.slice('#page-'.length)
setPage(page);
}
}
applyHash();
window.addEventListener("hashchange", applyHash);
setPage(page);
document.addEventListener('keydown', e => {
let a = CONTROL_RIGHT_IS_NEXT ? 1 : -1
if(!SINGLE_PAGE) a *= 2;
if(e.key === 'ArrowRight') page += a;
if(e.key === 'ArrowLeft') page -= a;
page = Math.min(page, page_count-1);
page = Math.max(page, 0);
setPage(page);
})
}
if(page_list.length > 4 && !paginated){
const button = document.createElement('button')
button.innerText = '페이지로 보기'
button.addEventListener('click', () => {
button.remove();
pagenate();
});
write_div.prepend(button)
}
})();