MLC Live Chat -- WordPress 插件

开发者	HsHHiri
更新时间	2026年10月3日 16:51
PHP版本:	7.4 及以上
WordPress版本:	7.0
版权:	GPLv2 or later
版权网址:	版权信息

2.7.0

Fixed a significant issue where simply visiting any page on the site created a full conversation record for every visitor, even if they never opened the chat window. This filled the conversations list in the dashboard with empty, contentless chats and pushed real customer conversations further down the list. A conversation is now only created the moment a visitor actually opens the chat widget (or sends a message), not on page load.
Visitors who already have an active conversation (because they previously sent a message) are unaffected — their chat continues to connect and poll for replies immediately, as before.
Fixed a related race condition where a message typed and sent immediately after opening the chat could occasionally fail, since the conversation record might not have finished being created on the server yet; the message now waits for that confirmation instead of being lost.
Added a one-time cleanup tool: the conversations page now shows a notice with a "Delete empty conversations" button when it detects leftover contentless conversations from the old behavior, so you can clear the backlog immediately after updating.

2.6.1

Fixed a bug where the conversation panel in the dashboard could silently show no message text (with the admin-bar notification still reporting unread messages correctly) whenever the page's security token (nonce) had expired — for example after leaving the dashboard open for a long time. The nonce check now returns a clear "session expired, please refresh" message instead of failing silently, and the same fix was applied to loading messages, sending a reply, polling for new messages, and closing a conversation.

2.6.0

Redesigned the settings page with a clean, card-based layout grouped by topic (Bale connection, chat messages, page-link/product picker, appearance, advanced), replacing the flat WordPress form-table.
Added a live status pill showing whether chat is currently on or off, and a setup banner that appears until a bot token and at least one admin ID are configured.
Replaced plain checkboxes with toggle switches, and the icon-position dropdown with a visual radio-button grid.
Added a live-updating count badge next to the admin IDs field.
No settings behavior changed — this is a visual/layout update only.

2.5.0

New: support for multiple Bale admins. Add one admin ID per line in the settings page — customer messages are now delivered to every configured admin, and any of them can reply.
Security: only chat IDs listed as configured admins can now use the "/reply" command or the reply button; messages/callbacks from any other chat ID are ignored.
When one admin replies to a conversation, the other admins are now notified so they don't duplicate the reply.
Fixed a bug where the settings-page JavaScript only serialized <input>/<select> fields, silently dropping the new multi-line admin IDs field (and any other <textarea>) when saving.
Existing single-admin installs are migrated automatically; no action needed after updating.

2.4.8

Hardened the WooCommerce-active check (now uses function_exists('WC') instead of class_exists('WooCommerce')) used to enable the product picker, for more reliable detection.
Fixed the page-context (auto page-link) logic silently failing if the browser blocks or throws on sessionStorage access (e.g. some private-browsing modes or hardened browser settings); it now falls back gracefully instead of stopping.
Added a visible error message in the product picker when the request to load products fails, instead of leaving the list empty with no explanation.
Added debug-log entries (visible when Debug Mode is enabled in settings) for both features, to make it possible to pinpoint the exact cause if either still doesn't work in a specific environment.

2.4.7

Found and fixed the actual root cause of the invisible send-button icon: some WordPress themes apply a very generic CSS rule like :is(.btn,.button,button,[type=submit]) { padding: 5px 20px; min-height: 42px; } to every button on the site. This overrode the plugin's own padding: 0 on the small round send/product-picker buttons, squeezing the icon down to nothing. All critical sizing properties (padding, width, height, display) on the chat widget's buttons are now marked !important so they can no longer be overridden by a theme's generic button styling.

2.4.6

Added the plugin version to the widget's HTML diagnostic comment (visible in "View Page Source") to make it possible to verify exactly which code version is actually running on a live site versus a cached one.
No functional changes; this release exists primarily as a fresh cache-busting version bump. If the send-button icon, page-link, or product-picker issues persist after installing this version, they are very likely caused by a caching layer (browser, page cache plugin, or CDN) serving old CSS/JS files rather than a code issue — see the plugin's support page for cache-clearing steps.

2.4.5

Fixed the send-message icon being invisible (showing only a colored circle): the icon used currentColor, which resolved to the default text color instead of white on the colored button background.
Moved the product-picker button to sit directly above the send button (in a vertical stack) instead of beside the text field.

2.4.4

Refined the main floating chat icon and the customer's send-message icon to a cleaner, simpler style.

2.4.3

Fixed the "send page link automatically" and "manual product picker" checkboxes not being reliably saved from the settings page, which also prevented the product-link feature from working end-to-end.
Fixed the product-picker button not appearing on mobile: it was toggled with jQuery's .show(), which set an incompatible display value that conflicted with the button's flex layout on some screens/browsers. It's now toggled with a CSS class instead.

2.4.2

Fixed the same "all: unset" CSS reset conflict (previously fixed only for the product-picker button) in several other buttons — the name-prompt buttons, the chat header close button, the send button, the admin toast close button, and the admin popover send button — which could make icons render incorrectly or inconsistently depending on the browser.
Refined the floating chat button icon to a simpler, rounder speech-bubble shape.

2.4.1

Fixed the manual product-picker button being invisible (it was still clickable, but the icon didn't render) due to a CSS reset conflict.
Changed the default floating chat button color to yellow with a simplified single-shape speech bubble icon. Existing sites that never customized this color are updated automatically; sites with a custom color are left untouched.

2.4.0

New: the chat can now automatically include a link to the page the customer is currently on with their message, so the admin knows what they're asking about (enabled by default, can be turned off in settings).
New: on WooCommerce stores, customers can optionally pick a specific product from a searchable dropdown in the chat box to reference it in their question (opt-in, requires WooCommerce).
Both options are independent and can be used together or separately from the settings page.

2.3.2

Moved the debug log directory back under wp_upload_dir() (a randomized, per-site subfolder) instead of a custom path directly under WP_CONTENT_DIR, per the plugin directory's guidance on determining writable locations correctly.
Replaced all direct file_put_contents()/file_get_contents() calls for log files with WP_Filesystem, for better compatibility across hosting environments.
Log files are now capped at 500KB (oldest entries are trimmed) to keep the read-then-write pattern required by WP_Filesystem fast.

2.3.1

Fixed the Bale "Reply" button (and /reply command) not delivering replies after upgrading from 2.2.x. The REST API namespace changed in 2.3.0, which left the webhook URL previously registered with Bale pointing to a route that no longer existed; the plugin now automatically re-registers the webhook on the new route the first time it runs after this update, without any action needed from the site owner. Sites still on 2.3.0 can also fix this immediately by clicking "Set webhook automatically" in the settings page.

2.3.0

Renamed all PHP classes, functions, constants, option names, AJAX actions, the REST API namespace, and JS globals from the mlc/MLC prefix (3 characters) to mlclich/MLCLICH, to comply with the WordPress.org plugin directory's uniqueness requirements. The plugin slug and text domain (mlc-live-chat) are unchanged.
Security fix: the webhook signature check (verify_secret()) previously allowed requests through when no secret was configured yet; it now rejects them instead, closing a window where replies could be spoofed on a freshly-activated site.
Moved all inline <script>/<style> blocks in admin pages and the chat widget to properly enqueued files via wp_enqueue_script()/wp_enqueue_style(), wp_localize_script(), and wp_add_inline_style().
The register_setting() sanitize callback now fully sanitizes every settings field (previously only two of the fields were handled there, relying on the AJAX handler for the rest).
Lowered the admin menu position so it no longer competes with WordPress core menu items.
Moved the debug log files out of wp-content/uploads (a web-accessible directory) to a dedicated folder outside of it, with a randomized per-site filename, so log contents are not exposed regardless of web server type (this previously relied on .htaccess, which Nginx ignores by default).
Documented the plugin's use of the Bale Bot API as an external service in the readme, per the plugin directory's guidelines.

2.2.9

Fixed two unescaped/unprepared SQL warnings in the sessions-overview and new-messages queries by inlining the SQL directly into $wpdb->prepare() calls.
Added a lightweight object-cache layer (wp_cache_get()/wp_cache_set()) to frequently-read queries to reduce direct-database-query notices and improve performance; the cache is invalidated on every write.
Polling queries (new admin replies, live message count) remain intentionally uncached to keep the chat real-time.

2.2.8

Removed the temporary connectivity diagnostic tool (ping-test buttons and its unauthenticated logging endpoint) from the settings page.
Replaced remaining direct SQL string interpolation with $wpdb->prepare() identifier placeholders (%i), removing all direct-database-query warnings.
Bumped minimum required WordPress version to 6.2 (required by the %i placeholder) and updated "Tested up to" to the current release.

2.2.7

Plugin now supports the Bale messenger exclusively; other messenger integrations have been removed.
Security hardening: added missing input unslashing/sanitization, escaped all admin-page output, and reduced direct database query warnings.
Replaced direct filesystem calls with WordPress-recommended equivalents (wp_delete_file(), WP_Filesystem).
Removed the deprecated load_plugin_textdomain() call and the unused Domain Path header.

2.2.1

Fixed a critical bug where the settings sanitize function always returned "enabled" as active.
Fixed conflicts with Elementor's live preview mode.
Added ABSPATH security guard to all PHP files.
Added readme.txt for release on the WordPress plugin repository.

2.1.0 - 2.2.0

Added the conversations dashboard, floating notification icon, automatic webhook detection, and various security and UI improvements.

MLC Live Chat

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