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https://github.com/thelounge/thelounge.git
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64ebe0f437
- Load up to 5 previews per message (to avoid abuse) - Do not load multiple times the same URL - Prepare preview containers per message instead of appending (to maintain correct order) - Store an array of previews instead of a single preview in `Msg` objects - Consolidate preview rendering for new messages and upon refresh/load history (when rendering entire channels) - Update `parse` tests to reflect previous point - Add test for multiple URLs - Switch preview tests from `assert` API to `expect` API
58 lines
1.3 KiB
JavaScript
58 lines
1.3 KiB
JavaScript
"use strict";
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const $ = require("jquery");
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const options = require("./options");
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const templates = require("../views");
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module.exports = renderPreview;
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function renderPreview(preview, msg) {
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preview.shown = options.shouldOpenMessagePreview(preview.type);
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const container = msg.closest(".chat");
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let bottom = false;
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if (container.length) {
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bottom = container.isScrollBottom();
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}
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msg.find(`[data-url="${preview.link}"]`)
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.first()
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.append(templates.msg_preview({preview: preview}));
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if (preview.shown && bottom) {
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handleImageInPreview(msg.find(".toggle-content"), container);
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}
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container.trigger("keepToBottom");
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}
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$("#chat").on("click", ".toggle-button", function() {
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const self = $(this);
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const container = self.closest(".chat");
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const content = self.parent().next(".toggle-content");
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const bottom = container.isScrollBottom();
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if (bottom && !content.hasClass("show")) {
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handleImageInPreview(content, container);
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}
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content.toggleClass("show");
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// If scrollbar was at the bottom before toggling the preview, keep it at the bottom
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if (bottom) {
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container.scrollBottom();
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}
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});
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function handleImageInPreview(content, container) {
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const img = content.find("img");
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// Trigger scroll logic after the image loads
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if (img.length && !img.width()) {
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img.on("load", function() {
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container.trigger("keepToBottom");
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});
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}
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}
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