SL-18548 fix for crash when trying to Save material without caps

indra/newview/llmaterialeditor.cpp

@@ -883,6 +883,11 @@ static U32 write_texture(const LLUUID& id, tinygltf::Model& model)
 
 void LLMaterialEditor::onClickSave()
 {
+    if (!capabilitiesAvalaible())
+    {
+        LLNotificationsUtil::add("MissingMaterialCaps");
+        return;
+    }
     if (!can_afford_transaction(mExpectedUploadCost))
     {
         LLSD args;
@@ -2809,3 +2814,17 @@ void LLMaterialEditor::loadDefaults()
     setFromGltfModel(model_in, 0, true);
 }
 
+bool LLMaterialEditor::capabilitiesAvalaible()
+{
+    const LLViewerRegion* region = gAgent.getRegion();
+    if (!region)
+    {
+        LL_WARNS("MaterialEditor") << "Not connected to a region, cannot save material." << LL_ENDL;
+        return false;
+    }
+    std::string agent_url = region->getCapability("UpdateMaterialAgentInventory");
+    std::string task_url = region->getCapability("UpdateMaterialTaskInventory");
+
+    return (!agent_url.empty() && !task_url.empty());
+}
+

indra/newview/llmaterialeditor.h

@@ -228,6 +228,8 @@ public:
 
     U32 getUnsavedChangesFlags() { return mUnsavedChanges; }
 
+    bool capabilitiesAvalaible();
+
 private:
     static bool updateInventoryItem(const std::string &buffer, const LLUUID &item_id, const LLUUID &task_id);
     static void createInventoryItem(const std::string &buffer, const std::string &name, const std::string &desc);

indra/newview/skins/default/xui/en/notifications.xml

@@ -6856,6 +6856,14 @@ Please try again.
     <tag>fail</tag>
   </notification>
 
+  <notification
+   icon="notifytip.tga"
+   name="MissingMaterialCaps"
+   type="notifytip">
+    <tag>fail</tag>
+    Not connected to a materials capable region.
+  </notification>
+
   <notification
    icon="notifytip.tga"
    name="ScriptMissing"