EXT-8577 WIP Context menu items for multi-attachments.

Done:
- 1. Dropped the obsolete "MultipleAttachments" setting.
- 2. Added an "Add" item to the following attachment-related context menus:
     * My Appearance (ex-My Outfits) context menu.
     * Edit Outfit -> Add More context menu.
     * Object in-world context menu.
     * Inventory context menu.
     * Object inspector gear menu.
- 3. Modified "Attach To / Attach To HUD" to perform the "add" instead of "replace" action.

TODO:
- Ability to attach multiple objects at once from the Add More panel (bulk attach).
- Make sure there's no memleak when you click Wear/Attach in the in-world object context menu
  and the callback isn't invoked (because e.g. avatar fails to get close enough to the object).

Issues:

0. I'm not sure whether LLAgentWearables::userAttachMultipleAttachments()
   should replace attachments or add them. Assumed the former.

1. I couldn't verify that adding objects from the object inspector menu works
   because I either could wear an object or see its inspector, not both.

2. > 1. Right-click on an object in your inventory and select "Wear".
   > VERIFY: Attaches the object and replaces whatever's there; asks for
   > confirmation before replacing an existing object.
   I think this is impossible to implement because we don't know in advance
   what point the object will be attached to, so we can't display a confirmation dialog.

Reviewed by Seraph at https://codereview.productengine.com/secondlife/r/843/

--HG--
branch : product-engine

3 files changed, 19 insertions, 1 deletions

diff --git a/indra/newview/skins/default/xui/en/menu_inspect_object_gear.xml b/indra/newview/skins/default/xui/en/menu_inspect_object_gear.xml
index 8ec7689819..76f68c6d4b 100644
--- a/indra/newview/skins/default/xui/en/menu_inspect_object_gear.xml
+++ b/indra/newview/skins/default/xui/en/menu_inspect_object_gear.xml
@@ -89,6 +89,15 @@
      function="Object.EnableWear" />
   </menu_item_call>  
   <menu_item_call
+   label="Add"
+   layout="topleft"
+   name="add">
+    <menu_item_call.on_click
+     function="Object.AttachAddToAvatar" />
+    <menu_item_call.on_visible
+     function="Object.EnableWear" />
+  </menu_item_call>
+  <menu_item_call
    label="Report"
    layout="topleft"
    name="report">
diff --git a/indra/newview/skins/default/xui/en/menu_object.xml b/indra/newview/skins/default/xui/en/menu_object.xml
index b6cc222e96..31f70d99ca 100644
--- a/indra/newview/skins/default/xui/en/menu_object.xml
+++ b/indra/newview/skins/default/xui/en/menu_object.xml
@@ -83,6 +83,15 @@
             <menu_item_call.on_enable
              function="Object.EnableWear" />
    </menu_item_call>
+   <menu_item_call
+      enabled="false"
+      label="Add"
+      name="Add">
+            <menu_item_call.on_click
+             function="Object.AttachAddToAvatar" />
+            <menu_item_call.on_enable
+             function="Object.EnableWear" />
+   </menu_item_call>
    <context_menu
          label="Attach  ▶"
          name="Object Attach" />
diff --git a/indra/newview/skins/default/xui/en/menu_wearable_list_item.xml b/indra/newview/skins/default/xui/en/menu_wearable_list_item.xml
index 8af2e1eaca..5feac53c33 100644
--- a/indra/newview/skins/default/xui/en/menu_wearable_list_item.xml
+++ b/indra/newview/skins/default/xui/en/menu_wearable_list_item.xml
@@ -13,7 +13,7 @@
      layout="topleft"
      name="wear_wear">
         <on_click
-         function="Wearable.Add" />
+         function="Wearable.Wear" />
     </menu_item_call>
     <menu_item_call
      label="Add"