1 files changed, 82 insertions, 0 deletions
diff --git a/indra/newview/scripts/lua/require/UI/popup.lua b/indra/newview/scripts/lua/require/UI/popup.lua
new file mode 100644
index 0000000000..8ccf3b87f3
--- /dev/null
+++ b/indra/newview/scripts/lua/require/UI/popup.lua
@@ -0,0 +1,82 @@
+local leap = require 'leap'
+local mapargs = require 'mapargs'
+local util = require 'util'
+
+-- notification is any name defined in notifications.xml as
+-- <notification name=>
+-- vars is a table providing values for [VAR] substitution keys in the
+-- notification body
+-- payload prepopulates the response table
+-- wait=false means fire and forget, returning nil
+-- wait=true waits for user response:
+-- * If the viewer returns a table containing exactly one key=true pair,
+--   popup() returns just that key. If the key is a string containing an
+--   underscore, e.g. 'OK_okcancelbuttons', it's truncated at the first
+--   underscore, e.g. 'OK'.
+-- * Otherwise the viewer's response is returned unchanged. To suppress the
+--   above transformations, pass a non-empty payload table; this will cause
+--   the viewer to return a table with at least two keys.
+local popup = util.setmetamethods{
+    -- this gets called when a consumer calls popup(notification, vars, payload)
+    __call = function(self, ...)
+        local args = mapargs('notification,vars,payload,wait', ...)
+        -- we use convenience argument names different from 'LLNotifications'
+        -- listener
+        newargs = {op='requestAdd',
+                   name=args.notification,
+                   substitutions=args.vars,
+                   payload=args.payload}
+        -- Specifically test (wait == false), NOT (not wait), because we treat
+        -- nil (omitted, default true) differently than false (explicitly
+        -- DON'T wait).
+        if args.wait == false then
+            leap.send('LLNotifications', newargs)
+        else
+            local response = leap.request('LLNotifications', newargs).response
+            -- response is typically a table. It might have multiple keys,
+            -- e.g. if caller passed non-empty payload. In that case, just
+            -- return the whole thing.
+            if type(response) ~= 'table' then
+                return response
+            end
+            -- get first key=value pair, if any
+            local key, value = next(response)
+            if (not key) or next(response, key) then
+                -- key == nil means response is empty
+                -- next(response, non-nil first key) ~= nil means at least two keys
+                return response
+            end
+            -- Here response is a table containing exactly one key. The
+            -- notifications system typically returns a table of the form
+            -- {OK_okcancelbuttons=true}, which is tricky to test for because it
+            -- varies with each set of buttons.
+            if value == true then
+                -- change {key=true} to plain key
+                response = key
+                if type(response) == 'string' then
+                    -- change 'OK_okcancelbuttons' to plain 'OK'
+                    response = string.split(response, '_')[1]
+                end
+            end
+            return response
+        end
+    end
+}
+
+function popup:alert(message, payload)
+    return self('GenericAlert', {MESSAGE=message, payload=payload})
+end
+
+function popup:alertOK(message, payload)
+    return self('GenericAlertOK', {MESSAGE=message, payload=payload})
+end
+
+function popup:alertYesCancel(message, payload)
+    return self('GenericAlertYesCancel', {MESSAGE=message, payload=payload})
+end
+
+function popup:tip(message, payload)
+    self{'SystemMessageTip', {MESSAGE=message, payload=payload}, wait=false}
+end
+
+return popup