[IMP] mail: introduce ChannelMemberListCategoryView

Task-2831082

closes odoo/odoo#91699

Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>

addons/mail/static/src/components/channel_member_list/channel_member_list.xml

@@ -4,11 +4,11 @@
     <t t-name="mail.ChannelMemberList" owl="1">
         <t t-if="channelMemberListView">
             <div class="o_ChannelMemberList d-flex flex-column overflow-auto bg-light" t-attf-class="{{ className }}" t-ref="root">
-                <t t-if="channelMemberListView.channel.orderedOnlineMembers.length > 0">
-                    <ChannelMemberListCategory category="'online'" channelMemberListView="channelMemberListView"/>
+                <t t-if="channelMemberListView.onlineCategoryView">
+                    <ChannelMemberListCategory record="channelMemberListView.onlineCategoryView" category="'online'" channelMemberListView="channelMemberListView"/>
                 </t>
-                <t t-if="channelMemberListView.channel.orderedOfflineMembers.length > 0">
-                    <ChannelMemberListCategory category="'offline'" channelMemberListView="channelMemberListView"/>
+                <t t-if="channelMemberListView.offlineCategoryView">
+                    <ChannelMemberListCategory record="channelMemberListView.offlineCategoryView" category="'offline'" channelMemberListView="channelMemberListView"/>
                 </t>
                 <t t-if="channelMemberListView.channel.unknownMemberCount === 1">
                     <span class="mx-2 mt-2">And 1 other member.</span>

addons/mail/static/src/components/channel_member_list_category/channel_member_list_category.js

@@ -15,6 +15,13 @@ export class ChannelMemberListCategory extends Component {
         return this.props.channelMemberListView;
     }
 
+    /**
+     * @returns {ChannelMemberListCategoryView}
+     */
+    get record() {
+        return this.props.record;
+    }
+
     /**
      * @returns {Partner[]}
      */
@@ -57,6 +64,7 @@ Object.assign(ChannelMemberListCategory, {
     props: {
         category: String,
         channelMemberListView: Object,
+        record: Object,
     },
     template: 'mail.ChannelMemberListCategory',
 });

addons/mail/static/src/models/channel_member_list_category_view.js

@@ -0,0 +1,19 @@
+/** @odoo-module **/
+
+import { registerModel } from '@mail/model/model_core';
+import { one } from '@mail/model/model_field';
+
+registerModel({
+    name: 'ChannelMemberListCategoryView',
+    identifyingFields: [['channelMemberListViewOwnerAsOffline', 'channelMemberListViewOwnerAsOnline']],
+    fields: {
+        channelMemberListViewOwnerAsOffline: one('ChannelMemberListView', {
+            inverse: 'offlineCategoryView',
+            readonly: true,
+        }),
+        channelMemberListViewOwnerAsOnline: one('ChannelMemberListView', {
+            inverse: 'onlineCategoryView',
+            readonly: true,
+        }),
+    },
+});

addons/mail/static/src/models/channel_member_list_view.js

@@ -2,7 +2,7 @@
 
 import { registerModel } from '@mail/model/model_core';
 import { one } from '@mail/model/model_field';
-import { clear, replace } from '@mail/model/model_field_command';
+import { clear, insertAndReplace, replace } from '@mail/model/model_field_command';
 
 registerModel({
     name: 'ChannelMemberListView',
@@ -21,6 +21,26 @@ registerModel({
             }
             return clear();
         },
+        /**
+         * @private
+         * @returns {FieldCommand}
+         */
+        _computeOfflineCategoryView() {
+            if (this.channel && this.channel.orderedOfflineMembers.length > 0) {
+                return insertAndReplace();
+            }
+            return clear();
+        },
+        /**
+         * @private
+         * @returns {FieldCommand}
+         */
+        _computeOnlineCategoryView() {
+            if (this.channel && this.channel.orderedOnlineMembers.length > 0) {
+                return insertAndReplace();
+            }
+            return clear();
+        },
     },
     fields: {
         channel: one('Thread', {
@@ -31,6 +51,16 @@ registerModel({
             inverse: 'channelMemberListView',
             readonly: true,
         }),
+        offlineCategoryView: one('ChannelMemberListCategoryView', {
+            compute: '_computeOfflineCategoryView',
+            inverse: 'channelMemberListViewOwnerAsOffline',
+            isCausal: true,
+        }),
+        onlineCategoryView: one('ChannelMemberListCategoryView', {
+            compute: '_computeOnlineCategoryView',
+            inverse: 'channelMemberListViewOwnerAsOnline',
+            isCausal: true,
+        }),
         threadViewOwner: one('ThreadView', {
             inverse: 'channelMemberListView',
             readonly: true,