c331ceae99
Allow for arbitrary string assignment to the font-size property. https://developer.mozilla.org/en-US/docs/Web/CSS/font-size Add support for the text-align property. https://developer.mozilla.org/en-US/docs/Web/CSS/text-align Co-authored-by: stephenmk <stephenmk@users.noreply.github.com>
323 lines
12 KiB
JavaScript
323 lines
12 KiB
JavaScript
/*
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* Copyright (C) 2021-2022 Yomichan Authors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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class StructuredContentGenerator {
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constructor(contentManager, japaneseUtil, document) {
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this._contentManager = contentManager;
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this._japaneseUtil = japaneseUtil;
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this._document = document;
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}
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appendStructuredContent(node, content, dictionary) {
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node.classList.add('structured-content');
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this._appendStructuredContent(node, content, dictionary, null);
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}
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createStructuredContent(content, dictionary) {
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const node = this._createElement('span', 'structured-content');
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this._appendStructuredContent(node, content, dictionary, null);
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return node;
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}
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createDefinitionImage(data, dictionary) {
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const {
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path,
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width,
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height,
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preferredWidth,
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preferredHeight,
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title,
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pixelated,
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imageRendering,
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appearance,
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background,
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collapsed,
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collapsible,
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verticalAlign,
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sizeUnits
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} = data;
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const hasPreferredWidth = (typeof preferredWidth === 'number');
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const hasPreferredHeight = (typeof preferredHeight === 'number');
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const invAspectRatio = (
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hasPreferredWidth && hasPreferredHeight ?
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preferredHeight / preferredWidth :
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height / width
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);
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const usedWidth = (
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hasPreferredWidth ?
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preferredWidth :
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(hasPreferredHeight ? preferredHeight / invAspectRatio : width)
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);
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const node = this._createElement('a', 'gloss-image-link');
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node.target = '_blank';
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node.rel = 'noreferrer noopener';
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const imageContainer = this._createElement('span', 'gloss-image-container');
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node.appendChild(imageContainer);
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const aspectRatioSizer = this._createElement('span', 'gloss-image-sizer');
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imageContainer.appendChild(aspectRatioSizer);
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const imageBackground = this._createElement('span', 'gloss-image-background');
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imageContainer.appendChild(imageBackground);
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const image = this._createElement('img', 'gloss-image');
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image.alt = '';
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imageContainer.appendChild(image);
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const overlay = this._createElement('span', 'gloss-image-container-overlay');
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imageContainer.appendChild(overlay);
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const linkText = this._createElement('span', 'gloss-image-link-text');
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linkText.textContent = 'Image';
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node.appendChild(linkText);
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node.dataset.path = path;
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node.dataset.dictionary = dictionary;
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node.dataset.imageLoadState = 'not-loaded';
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node.dataset.hasAspectRatio = 'true';
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node.dataset.imageRendering = typeof imageRendering === 'string' ? imageRendering : (pixelated ? 'pixelated' : 'auto');
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node.dataset.appearance = typeof appearance === 'string' ? appearance : 'auto';
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node.dataset.background = typeof background === 'boolean' ? `${background}` : 'true';
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node.dataset.collapsed = typeof collapsed === 'boolean' ? `${collapsed}` : 'false';
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node.dataset.collapsible = typeof collapsible === 'boolean' ? `${collapsible}` : 'true';
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if (typeof verticalAlign === 'string') {
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node.dataset.verticalAlign = verticalAlign;
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}
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if (typeof sizeUnits === 'string' && (hasPreferredWidth || hasPreferredHeight)) {
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node.dataset.sizeUnits = sizeUnits;
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}
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imageContainer.style.width = `${usedWidth}em`;
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if (typeof title === 'string') {
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imageContainer.title = title;
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}
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aspectRatioSizer.style.paddingTop = `${invAspectRatio * 100.0}%`;
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if (this._contentManager !== null) {
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this._contentManager.loadMedia(
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path,
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dictionary,
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(url) => this._setImageData(node, image, imageBackground, url, false),
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() => this._setImageData(node, image, imageBackground, null, true)
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);
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}
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return node;
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}
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// Private
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_appendStructuredContent(container, content, dictionary, language) {
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if (typeof content === 'string') {
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if (content.length > 0) {
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container.appendChild(this._createTextNode(content));
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if (language === null && this._japaneseUtil.isStringPartiallyJapanese(content)) {
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container.lang = 'ja';
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}
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}
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return;
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}
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if (!(typeof content === 'object' && content !== null)) {
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return;
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}
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if (Array.isArray(content)) {
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for (const item of content) {
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this._appendStructuredContent(container, item, dictionary, language);
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}
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return;
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}
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const node = this._createStructuredContentGenericElement(content, dictionary, language);
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if (node !== null) {
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container.appendChild(node);
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}
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}
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_createElement(tagName, className) {
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const node = this._document.createElement(tagName);
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node.className = className;
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return node;
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}
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_createTextNode(data) {
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return this._document.createTextNode(data);
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}
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_setElementDataset(element, data) {
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for (let [key, value] of Object.entries(data)) {
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if (key.length > 0) {
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key = `${key[0].toUpperCase()}${key.substring(1)}`;
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}
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key = `sc${key}`;
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try {
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element.dataset[key] = value;
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} catch (e) {
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// DOMException if key is malformed
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}
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}
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}
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_setImageData(node, image, imageBackground, url, unloaded) {
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if (url !== null) {
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image.src = url;
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node.href = url;
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node.dataset.imageLoadState = 'loaded';
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imageBackground.style.setProperty('--image', `url("${url}")`);
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} else {
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image.removeAttribute('src');
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node.removeAttribute('href');
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node.dataset.imageLoadState = unloaded ? 'unloaded' : 'load-error';
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imageBackground.style.removeProperty('--image');
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}
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}
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_createStructuredContentGenericElement(content, dictionary, language) {
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const {tag} = content;
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switch (tag) {
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case 'br':
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return this._createStructuredContentElement(tag, content, dictionary, language, 'simple', false, false);
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case 'ruby':
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case 'rt':
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case 'rp':
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return this._createStructuredContentElement(tag, content, dictionary, language, 'simple', true, false);
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case 'table':
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return this._createStructuredContentTableElement(tag, content, dictionary, language);
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case 'thead':
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case 'tbody':
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case 'tfoot':
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case 'tr':
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return this._createStructuredContentElement(tag, content, dictionary, language, 'table', true, false);
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case 'th':
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case 'td':
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return this._createStructuredContentElement(tag, content, dictionary, language, 'table-cell', true, true);
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case 'div':
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case 'span':
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case 'ol':
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case 'ul':
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case 'li':
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return this._createStructuredContentElement(tag, content, dictionary, language, 'simple', true, true);
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case 'img':
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return this.createDefinitionImage(content, dictionary);
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case 'a':
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return this._createLinkElement(content, dictionary, language);
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}
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return null;
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}
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_createStructuredContentTableElement(tag, content, dictionary, language) {
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const container = this._createElement('div', 'gloss-sc-table-container');
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const table = this._createStructuredContentElement(tag, content, dictionary, language, 'table', true, false);
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container.appendChild(table);
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return container;
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}
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_createStructuredContentElement(tag, content, dictionary, language, type, hasChildren, hasStyle) {
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const node = this._createElement(tag, `gloss-sc-${tag}`);
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const {data, lang} = content;
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if (typeof data === 'object' && data !== null) { this._setElementDataset(node, data); }
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if (typeof lang === 'string') {
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node.lang = lang;
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language = lang;
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}
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switch (type) {
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case 'table-cell':
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{
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const {colSpan, rowSpan} = content;
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if (typeof colSpan === 'number') { node.colSpan = colSpan; }
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if (typeof rowSpan === 'number') { node.rowSpan = rowSpan; }
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}
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break;
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}
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if (hasStyle) {
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const {style} = content;
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if (typeof style === 'object' && style !== null) {
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this._setStructuredContentElementStyle(node, style);
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}
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}
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if (hasChildren) {
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this._appendStructuredContent(node, content.content, dictionary, language);
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}
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return node;
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}
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_setStructuredContentElementStyle(node, contentStyle) {
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const {style} = node;
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const {
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fontStyle,
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fontWeight,
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fontSize,
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textDecorationLine,
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verticalAlign,
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textAlign,
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marginTop,
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marginLeft,
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marginRight,
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marginBottom,
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listStyleType
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} = contentStyle;
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if (typeof fontStyle === 'string') { style.fontStyle = fontStyle; }
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if (typeof fontWeight === 'string') { style.fontWeight = fontWeight; }
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if (typeof fontSize === 'string') { style.fontSize = fontSize; }
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if (typeof verticalAlign === 'string') { style.verticalAlign = verticalAlign; }
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if (typeof textAlign === 'string') { style.textAlign = textAlign; }
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if (typeof textDecorationLine === 'string') {
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style.textDecoration = textDecorationLine;
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} else if (Array.isArray(textDecorationLine)) {
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style.textDecoration = textDecorationLine.join(' ');
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}
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if (typeof marginTop === 'number') { style.marginTop = `${marginTop}em`; }
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if (typeof marginLeft === 'number') { style.marginLeft = `${marginLeft}em`; }
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if (typeof marginRight === 'number') { style.marginRight = `${marginRight}em`; }
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if (typeof marginBottom === 'number') { style.marginBottom = `${marginBottom}em`; }
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if (typeof listStyleType === 'string') { style.listStyleType = listStyleType; }
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}
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_createLinkElement(content, dictionary, language) {
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let {href} = content;
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const internal = href.startsWith('?');
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if (internal) {
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href = `${location.protocol}//${location.host}/search.html${href.length > 1 ? href : ''}`;
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}
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const node = this._createElement('a', 'gloss-link');
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node.dataset.external = `${!internal}`;
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const text = this._createElement('span', 'gloss-link-text');
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node.appendChild(text);
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const {lang} = content;
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if (typeof lang === 'string') {
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node.lang = lang;
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language = lang;
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}
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this._appendStructuredContent(text, content.content, dictionary, language);
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if (!internal) {
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const icon = this._createElement('span', 'gloss-link-external-icon icon');
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icon.dataset.icon = 'external-link';
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node.appendChild(icon);
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}
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this._contentManager.prepareLink(node, href, internal);
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return node;
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}
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}
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