mirror of
https://github.com/overleaf/overleaf.git
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100 lines
3.3 KiB
CoffeeScript
100 lines
3.3 KiB
CoffeeScript
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define () ->
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class CursorManager
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UPDATE_INTERVAL: 500
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constructor: (@ide) ->
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@clients = {}
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@ide.socket.on "clientTracking.clientUpdated", (cursorUpdate) => @onRemoteClientUpdate(cursorUpdate)
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@ide.socket.on "clientTracking.clientDisconnected", (client_id) => @onRemoteClientDisconnect(client_id)
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@ide.editor.on "change:doc", (session) =>
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@bindToAceSession(session)
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@ide.editor.on "mousemove", (e) =>
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@mousePosition = e.position
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@updateVisibleNames()
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bindToAceSession: (session) ->
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@clients = {}
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@ide.editor.aceEditor.on "changeSelection", => @onLocalCursorUpdate()
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onLocalCursorUpdate: () ->
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if !@cursorUpdateTimeout?
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@cursorUpdateTimeout = setTimeout (=>
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@_sendLocalCursorUpdate()
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delete @cursorUpdateTimeout
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), @UPDATE_INTERVAL
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_sendLocalCursorUpdate: () ->
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cursor = @ide.editor.getCursorPosition()
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if !@currentCursorPosition? or not (cursor.row == @currentCursorPosition.row and cursor.column == @currentCursorPosition.column)
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@currentCursorPosition = cursor
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@ide.socket.emit "clientTracking.updatePosition", {
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row: cursor.row
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column: cursor.column
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doc_id: @ide.editor.getCurrentDocId()
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}
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onRemoteClientUpdate: (clientData) ->
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if clientData.id != ide.socket.socket.sessionid
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client = @clients[clientData.id] ||= {}
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client.row = clientData.row
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client.column = clientData.column
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client.name = clientData.name
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client.doc_id = clientData.doc_id
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@redrawCursors()
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onRemoteClientDisconnect: (client_id) ->
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@removeCursor(client_id)
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delete @clients[client_id]
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removeCursor: (client_id) ->
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client = @clients[client_id]
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return if !client?
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@ide.editor.removeMarker(client.cursorMarkerId)
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delete client.cursorMarkerId
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redrawCursors: () ->
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for clientId, clientData of @clients
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do (clientId, clientData) =>
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if clientData.cursorMarkerId?
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@removeCursor(clientId)
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if clientData.doc_id == @ide.editor.getCurrentDocId()
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colorId = @getColorIdFromName(clientData.name)
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clientData.cursorMarkerId = @ide.editor.addMarker {
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row: clientData.row
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column: clientData.column
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length: 1
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}, "sharelatex-remote-cursor", (html, range, left, top, config) ->
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div = """
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<div
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id='cursor-#{clientId}'
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class='sharelatex-remote-cursor custom ace_start sharelatex-remote-cursor-#{colorId}'
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style='height: #{config.lineHeight}px; top:#{top}px; left:#{left}px;'
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>
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<div class="nubbin" style="bottom: #{config.lineHeight - 2}px"></div>
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<div class="name" style="display: none; bottom: #{config.lineHeight - 2}px">#{$('<div/>').text(clientData.name).html()}</div>
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</div>
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"""
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html.push div
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, true
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setTimeout =>
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@updateVisibleNames()
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, 0
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updateVisibleNames: () ->
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for clientId, clientData of @clients
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if @mousePosition? and clientData.row == @mousePosition.row and clientData.column == @mousePosition.column
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$("#cursor-#{clientId}").find(".name").show()
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$("#cursor-#{clientId}").find(".nubbin").hide()
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else
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$("#cursor-#{clientId}").find(".name").hide()
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$("#cursor-#{clientId}").find(".nubbin").show()
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getColorIdFromName: (name) ->
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@currentColorId ||= 0
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@colorIds ||= {}
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if !@colorIds[name]?
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@colorIds[name] = @currentColorId
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@currentColorId++
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return @colorIds[name]
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