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This PR makes the following key changes to the load-more component: * Updating to a Glimmer component * Changing from an eyeline/scrolling-based mechanism to an IntersectionObserver to determine when to load * Keeping track of a single invisible sentinel element to help trigger the loadMore action instead of having to find and track the last item of the collection upon every load * The component can now be used without wrapping around some content to be yielded - the intent is to use this for cases like [DiscoveryTopicsList](f0057c7353/app/assets/javascripts/discourse/app/components/discovery/topics.gjs (L222)) where we might want more precise placement of the sentinel element. * Added utility toggle functions to control observer behaviour in this class for testing We will replace the load-more mixin in DiscoveryTopicsList in another PR. https://github.com/user-attachments/assets/50d9763f-b5f8-40f6-8630-41bdf107baf7 ### Technical Considerations 1. Keeping track of a single sentinel element simplifies the logic greatly and is also more robust to changes in the collection that's being loaded. (ref: a [previous commit](https://github.com/discourse/discourse/pull/32285/commits/2279519081eef9649864453c90d72dbb2bd8970c) that was following the previous approach of tracking specifically the last item of the loaded collection); this also sidesteps odd edge cases like if the tracked element is larger than the entire viewport. 2. Using [isIntersecting](https://developer.mozilla.org/en-US/docs/Web/API/IntersectionObserverEntry/isIntersecting) instead of calculating manually whether the element is in the viewport is also less flaky - I ran into issues with the boundingClientRect inconsistently being calculated as outside the viewport on different sized screens. 3. We need to properly bind `loadMore` functions with the action decorator, otherwise the way we pass the loadMore callbacks through to the observe-intersection modifier results in attempting to call it on the loadMore component context instead. I've done this for all such functions except for the one in [`category-list`](0ed4b09527/app/assets/javascripts/discourse/app/models/category-list.js (L117)) which uses `@bind` that should be equivalent in terms of binding to the correct `this`.
116 lines
4.1 KiB
Text
Vendored
116 lines
4.1 KiB
Text
Vendored
import { fn } from "@ember/helper";
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import { on } from "@ember/modifier";
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import { LinkTo } from "@ember/routing";
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import RouteTemplate from "ember-route-template";
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import ConditionalLoadingSpinner from "discourse/components/conditional-loading-spinner";
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import LoadMore from "discourse/components/load-more";
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import TextField from "discourse/components/text-field";
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import avatar from "discourse/helpers/avatar";
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import icon from "discourse/helpers/d-icon";
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import formatDate from "discourse/helpers/format-date";
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import { i18n } from "discourse-i18n";
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export default RouteTemplate(
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<template>
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<LoadMore @action={{@controller.loadMore}}>
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<table class="table email-list">
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<thead>
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<tr>
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<th>{{i18n "admin.email.time"}}</th>
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<th>{{i18n "admin.email.incoming_emails.from_address"}}</th>
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<th>{{i18n "admin.email.incoming_emails.to_addresses"}}</th>
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<th>{{i18n "admin.email.incoming_emails.subject"}}</th>
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<th colspan="2">{{i18n "admin.email.incoming_emails.error"}}</th>
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</tr>
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</thead>
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<tbody>
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<tr class="filters">
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<td>{{i18n "admin.email.logs.filters.title"}}</td>
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<td>
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<TextField
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@value={{@controller.filter.from}}
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@placeholderKey="admin.email.incoming_emails.filters.from_placeholder"
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/></td>
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<td>
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<TextField
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@value={{@controller.filter.to}}
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@placeholderKey="admin.email.incoming_emails.filters.to_placeholder"
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/></td>
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<td>
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<TextField
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@value={{@controller.filter.subject}}
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@placeholderKey="admin.email.incoming_emails.filters.subject_placeholder"
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/></td>
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<td colspan="2">
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<TextField
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@value={{@controller.filter.error}}
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@placeholderKey="admin.email.incoming_emails.filters.error_placeholder"
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/></td>
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</tr>
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{{#each @controller.model as |email|}}
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<tr>
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<td class="time">{{formatDate email.created_at}}</td>
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<td class="username">
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<div>
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{{#if email.user}}
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<LinkTo @route="adminUser" @model={{email.user}}>
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{{avatar email.user imageSize="tiny"}}
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{{email.from_address}}
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</LinkTo>
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{{else}}
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{{#if email.from_address}}
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<a
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href="mailto:{{email.from_address}}"
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>{{email.from_address}}</a>
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{{else}}
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—
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{{/if}}
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{{/if}}
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</div>
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</td>
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<td class="addresses">
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{{#each email.to_addresses as |to|}}
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<p><a href="mailto:{{to}}" title="TO">{{to}}</a></p>
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{{/each}}
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{{#each email.cc_addresses as |cc|}}
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<p><a href="mailto:{{cc}}" title="CC">{{cc}}</a></p>
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{{/each}}
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</td>
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<td>{{email.subject}}</td>
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<td class="error">
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<a
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href
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{{on
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"click"
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(fn @controller.handleShowIncomingEmail email.id)
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}}
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>{{email.error}}</a>
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</td>
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<td class="email-details">
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<a
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href
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{{on
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"click"
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(fn @controller.handleShowIncomingEmail email.id)
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}}
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title={{i18n "admin.email.details_title"}}
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>
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{{icon "circle-info"}}
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</a>
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</td>
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</tr>
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{{else}}
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<tr>
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<td colspan="6">{{i18n
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"admin.email.incoming_emails.none"
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}}</td></tr>
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{{/each}}
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</tbody>
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</table>
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</LoadMore>
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<ConditionalLoadingSpinner @condition={{@controller.loading}} />
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</template>
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);
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