neft/src/renderer/impl/css/level0/loader/resources.coffee

Universal Platform

'use strict'

module.exports = (impl) ->
    loadResources: (resources) ->
        self = @

        length = 1
        loaded = 0

        onLoaded = ->
            self.progress = ++loaded / length
            return

        load = ->
            if document.readyState is 'complete'
                for resource in resources
                    for _, resolutions of resource.paths
                        for resolution, path of resolutions
                            length++
                            img = document.createElement 'img'
                            img.onload = img.onerror = onLoaded
                            img.src = path
            return

        if document.readyState is 'complete'
            load()
        else
            document.addEventListener 'readystatechange', load


        onLoaded()