[FIX] mail: keep chat window hidden on receiving new message

Before this commit, when receiving a new message from a hidden chat
window, it was making it visible. Because of this, if we had focus
on any other window, the focus was lost. Even more annoying, if we
had focus on the left-most visible chat window, it moved to hidden
menu, so that new chat window takes its place.

This commit fixes the issue by keeping new chat windows hidden
on receiving new messages, in case there is not enough available
space.

Task-ID 2026101

closes odoo/odoo#34291

Signed-off-by: Martin Geubelle (mge) <mge@openerp.com>

addons/mail/static/src/js/services/mail_window_manager.js

@@ -134,10 +134,6 @@ MailManager.include({
             }).always(function () {
                 thread.isCreatingWindow = false;
             });
-        } else if (!options.passively) {
-            if (threadWindow.isHidden()) {
-                this._makeThreadWindowVisible(threadWindow);
-            }
         }
         def.then(function () {
             threadWindow.updateVisualFoldState();

addons/mail/static/tests/thread_window/hidden_thread_window_tests.js

@@ -222,6 +222,91 @@ QUnit.test('hidden thread windows dropdown when not enough horizontal space (ver
     testUtils.unpatch(this.services.mail_service);
 });
 
+QUnit.test('receive message from hidden thread window', function (assert) {
+    // This is almost the same test as the one before, except there are
+    // at most 3 thread windows visible, and 2 thread windows are visible
+    // when it shows the 'hidden thread window' button.
+    // This case occurs when the amount of available slots depends on
+    // whether the hidden button should be displayed or not
+    // Example:
+    //      - global width of 400px
+    //      - button width of 100px
+    //      - thread width of 250px
+    //
+    // Without button: 1 thread window (250px < 800px)
+    //    With button: 1 thread window (250px + 100px = 350px < 400px)
+    assert.expect(7);
+
+    testUtils.patch(this.services.mail_service, {
+        HIDDEN_THREAD_WINDOW_DROPDOWN_BUTTON_WIDTH: 100,
+        THREAD_WINDOW_WIDTH: 250,
+        _getGlobalWidth: function () { return 400; },
+    });
+
+    var channels = [{
+        id: 1,
+        channel_type: 'channel',
+        name: "channel" + 1,
+    }, {
+        id: 2,
+        channel_type: 'channel',
+        name: "channel" + 2,
+    }];
+
+    this.data.initMessaging = {
+        channel_slots: {
+            channel_channel: channels,
+        },
+    };
+
+    var parent = this.createParent({
+        data: this.data,
+        services: this.services,
+    });
+
+    // detach channel 2 first, so that chanel 1 is open and channel 2 is hidden
+    parent.call('mail_service', 'getChannel', 2).detach();
+    parent.call('mail_service', 'getChannel', 1).detach();
+
+    var $visibleThreadWindows = $('.o_thread_window:not(.o_thread_window_dropdown, .o_hidden)');
+
+    assert.strictEqual($visibleThreadWindows.length, 1,
+        "should have 1 thread windows visible (as many as available slots)");
+    assert.strictEqual($visibleThreadWindows.filter('[data-thread-id="1"]').length, 1,
+        "the thread window with ID 1 should be visible");
+    assert.strictEqual($('.o_thread_window.o_hidden[data-thread-id="2"]').length, 1,
+        "the thread window with ID 2 should be hidden");
+    assert.strictEqual(
+        $('.o_thread_window_dropdown .o_total_unread_counter').text().trim(),
+        "",
+        "should have no unread counter on hidden dropup menu");
+
+    // simulate receiving a message in channel ID 2
+    var messageData = {
+        author_id: [5, "Someone else"],
+        body: "<p>Test message</p>",
+        id: 1,
+        model: 'mail.channel',
+        res_id: 2,
+        channel_ids: [2],
+    };
+    var notification = [[false, 'mail.channel', 2], messageData];
+    parent.call('bus_service', 'trigger', 'notification', [notification]);
+
+    $visibleThreadWindows = $('.o_thread_window:not(.o_thread_window_dropdown, .o_hidden)');
+    assert.strictEqual($visibleThreadWindows.filter('[data-thread-id="1"]').length, 1,
+        "the thread window with ID 1 should stay visible");
+    assert.strictEqual($('.o_thread_window.o_hidden[data-thread-id="2"]').length, 1,
+        "the thread window with ID 2 should stay hidden");
+    assert.strictEqual(
+        $('.o_thread_window_dropdown .o_total_unread_counter').text().trim(),
+        "1",
+        "should have unread counter of 1 on hidden dropup menu");
+
+    parent.destroy();
+    testUtils.unpatch(this.services.mail_service);
+});
+
 });
 });
 });