mirror of
https://github.com/codeninjasllc/discourse.git
synced 2024-12-18 03:25:31 -05:00
48 lines
1.3 KiB
CoffeeScript
48 lines
1.3 KiB
CoffeeScript
|
#
|
||
|
|
# We can insert data into the PreloadStore when the document is loaded.
|
||
|
|
# The data can be accessed once by a key, after which it is removed.
|
||
|
|
#
|
||
|
|
window.PreloadStore =
|
||
|
|
|
||
|
|
data: {}
|
||
|
|
|
||
|
|
store: (key, value) ->
|
||
|
|
@data[key] = value
|
||
|
|
|
||
|
|
# To retrieve a key, you provide the key you want, plus a finder to
|
||
|
|
# load it if the key cannot be found. Once the key is used once, it is
|
||
|
|
# removed from the store. So, for example, you can't load a preloaded topic
|
||
|
|
# more than once.
|
||
|
|
get: (key, finder) ->
|
||
|
|
promise = new RSVP.Promise
|
||
|
|
|
||
|
|
if @data[key]
|
||
|
|
promise.resolve(@data[key])
|
||
|
|
delete @data[key]
|
||
|
|
else
|
||
|
|
if finder
|
||
|
|
result = finder()
|
||
|
|
|
||
|
|
# If the finder returns a promise, we support that too
|
||
|
|
if result.then
|
||
|
|
result.then (result) ->
|
||
|
|
promise.resolve(result)
|
||
|
|
, (result) -> promise.reject(result)
|
||
|
|
else
|
||
|
|
promise.resolve(result)
|
||
|
|
else
|
||
|
|
promise.resolve(undefined)
|
||
|
|
|
||
|
|
promise
|
||
|
|
|
||
|
|
# Does the store contain a particular key? Does not delete, just returns
|
||
|
|
# true or false.
|
||
|
|
contains: (key) -> @data[key] isnt undefined
|
||
|
|
|
||
|
|
# If we are sure it's preloaded, we don't have to supply a finder. Just
|
||
|
|
# returns undefined if it's not in the store.
|
||
|
|
getStatic: (key) ->
|
||
|
|
result = @data[key]
|
||
|
|
delete @data[key]
|
||
|
|
result
|