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Add options check.

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This patch avoids main process never response back to renderer if the options is
invalid.
This commit is contained in:
Haojian Wu 2015-10-19 10:54:12 +08:00
parent 214f8477b3
commit fb4efec55d
4 changed files with 37 additions and 22 deletions
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9
atom/browser/lib/desktop-capturer.coffee
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@ -11,25 +11,26 @@ requestsQueue = []
ipc.on 'ATOM_BROWSER_DESKTOP_CAPTURER_GET_SOURCES', (event, options) ->
request = { options: options, webContents: event.sender }
desktopCapturer.startHandling options if requestsQueue.length is 0
requestsQueue.push request
desktopCapturer.startHandling options if requestsQueue.length is 1
# If the WebContents is destroyed before receiving result, just remove the
# reference from requestsQueue to make the module not send the result to it.
event.sender.once 'destroyed', () ->
request.webContents = null
desktopCapturer.emit = (event_name, event, sources) ->
desktopCapturer.emit = (event_name, event, error_message, sources) ->
# Receiving sources result from main process, now send them back to renderer.
handledRequest = requestsQueue.shift 0
error = if error_message then Error error_message else null
result = ({ id: source.id, name: source.name, thumbnail: source.thumbnail.toDataUrl() } for source in sources)
handledRequest.webContents?.send 'ATOM_RENDERER_DESKTOP_CAPTURER_RESULT', result
handledRequest.webContents?.send 'ATOM_RENDERER_DESKTOP_CAPTURER_RESULT', error_message, result
# Check the queue to see whether there is other same request. If has, handle
# it for reducing redunplicated `desktopCaptuer.startHandling` calls.
unhandledRequestsQueue = []
for request in requestsQueue
if isOptionsEqual handledRequest.options, request.options
request.webContents?.send 'ATOM_RENDERER_DESKTOP_CAPTURER_RESULT', result
request.webContents?.send 'ATOM_RENDERER_DESKTOP_CAPTURER_RESULT', error_message, result
else
unhandledRequestsQueue.push request
requestsQueue = unhandledRequestsQueue