mirror of
https://github.com/overleaf/overleaf.git
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69 lines
1.9 KiB
CoffeeScript
69 lines
1.9 KiB
CoffeeScript
define [
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"../../../libs/md5"
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], () ->
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class OnlineUsersManager
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constructor: (@ide, @$scope) ->
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@$scope.onlineUsers = {}
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@$scope.onlineUserCursorHighlights = {}
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@$scope.$watch "editor.cursorPosition", (position) =>
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if position?
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@sendCursorPositionUpdate()
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@ide.socket.on "clientTracking.clientUpdated", (client) =>
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if client.id != @ide.socket.socket.sessionid # Check it's not me!
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@$scope.$apply () =>
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@$scope.onlineUsers[client.id] = client
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@updateCursorHighlights()
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@ide.socket.on "clientTracking.clientDisconnected", (client_id) =>
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@$scope.$apply () =>
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delete @$scope.onlineUsers[client_id]
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@updateCursorHighlights()
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updateCursorHighlights: () ->
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@$scope.onlineUserCursorHighlights = {}
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for client_id, client of @$scope.onlineUsers
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doc_id = client.doc_id
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continue if !doc_id?
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@$scope.onlineUserCursorHighlights[doc_id] ||= []
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@$scope.onlineUserCursorHighlights[doc_id].push {
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label: client.name
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cursor:
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row: client.row
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column: client.column
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hue: @getHueForUserId(client.user_id)
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}
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UPDATE_INTERVAL: 500
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sendCursorPositionUpdate: () ->
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if !@cursorUpdateTimeout?
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@cursorUpdateTimeout = setTimeout ()=>
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position = @$scope.editor.cursorPosition
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doc_id = @$scope.editor.open_doc_id
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@ide.socket.emit "clientTracking.updatePosition", {
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row: position.row
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column: position.column
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doc_id: doc_id
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}
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delete @cursorUpdateTimeout
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, @UPDATE_INTERVAL
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OWN_HUE: 200 # We will always appear as this color to ourselves
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ANONYMOUS_HUE: 100
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getHueForUserId: (user_id) ->
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if !user_id? or user_id == "anonymous-user"
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return @ANONYMOUS_HUE
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if window.user.id == user_id
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return @OWN_HUE
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hash = CryptoJS.MD5(user_id)
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hue = parseInt(hash.toString().slice(0,8), 16) % 320
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# Avoid 20 degrees either side of the personal hue
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if hue > @OWNER_HUE - 20
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hue = hue + 40
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return hue
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