02d9f7c736
* Add template pre-processing * Remove whitespace * Add labels * Reuse tag template for search tags * Add space
75 lines
2.4 KiB
JavaScript
75 lines
2.4 KiB
JavaScript
/*
|
|
* Copyright (C) 2020 Yomichan Authors
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
class HtmlTemplateCollection {
|
|
constructor(source) {
|
|
this._templates = new Map();
|
|
|
|
const sourceNode = (
|
|
typeof source === 'string' ?
|
|
new DOMParser().parseFromString(source, 'text/html') :
|
|
source
|
|
);
|
|
|
|
const pattern = /^([\w\W]+)-template$/;
|
|
for (const template of sourceNode.querySelectorAll('template')) {
|
|
const match = pattern.exec(template.id);
|
|
if (match === null) { continue; }
|
|
this._prepareTemplate(template);
|
|
this._templates.set(match[1], template);
|
|
}
|
|
}
|
|
|
|
instantiate(name) {
|
|
const template = this._templates.get(name);
|
|
return document.importNode(template.content.firstChild, true);
|
|
}
|
|
|
|
instantiateFragment(name) {
|
|
const template = this._templates.get(name);
|
|
return document.importNode(template.content, true);
|
|
}
|
|
|
|
// Private
|
|
|
|
_prepareTemplate(template) {
|
|
if (template.dataset.removeWhitespaceText === 'true') {
|
|
this._removeWhitespaceText(template);
|
|
}
|
|
}
|
|
|
|
_removeWhitespaceText(template) {
|
|
const {content} = template;
|
|
const {TEXT_NODE} = Node;
|
|
const iterator = document.createNodeIterator(content, NodeFilter.SHOW_TEXT);
|
|
const removeNodes = [];
|
|
while (true) {
|
|
const node = iterator.nextNode();
|
|
if (node === null) { break; }
|
|
if (node.nodeType === TEXT_NODE && node.nodeValue.trim().length === 0) {
|
|
removeNodes.push(node);
|
|
}
|
|
}
|
|
for (const node of removeNodes) {
|
|
const {parentNode} = node;
|
|
if (parentNode !== null) {
|
|
parentNode.removeChild(node);
|
|
}
|
|
}
|
|
}
|
|
}
|