All files / components/uploader/js FileQueue.js

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/*
Copyright 2008-2009 University of Toronto
Copyright 2008-2009 University of California, Berkeley
Copyright 2010-2011 OCAD University
Copyright 2013 Raising the Floor - US
Copyright 2015 Raising the Floor - International
 
Licensed under the Educational Community License (ECL), Version 2.0 or the New
BSD license. You may not use this file except in compliance with one these
Licenses.
 
You may obtain a copy of the ECL 2.0 License and BSD License at
https://github.com/fluid-project/infusion/raw/master/Infusion-LICENSE.txt
*/
 
var fluid_3_0_0 = fluid_3_0_0 || {};
 
(function ($, fluid) {
    "use strict";
 
    fluid.registerNamespace("fluid.uploader");
 
    fluid.defaults("fluid.uploader.fileQueue", {
        gradeNames: ["fluid.component"],
        members: {
            files: [],
            isUploading: false
        },
        invokers: {
            /********************
             * Queue Operations *
             ********************/
            start: {
                funcName: "fluid.uploader.fileQueue.start",
                args: "{that}"
            },
            startFile: {
                funcName: "fluid.uploader.fileQueue.startFile",
                args: "{that}.currentBatch"
            },
            finishFile: {
                funcName: "fluid.uploader.fileQueue.finishFile",
                args: "{that}.currentBatch"
            },
            shouldUploadNextFile: {
                funcName: "fluid.uploader.fileQueue.shouldUploadNextFile",
                args: "{that}"
            },
            /*****************************
             * File manipulation methods *
             *****************************/
            addFile: {
                funcName: "fluid.uploader.fileQueue.addFile",
                args: ["{that}.files", "{arguments}.0"]
            },
            removeFile: {
                funcName: "fluid.uploader.fileQueue.removeFile",
                args: ["{that}.files", "{arguments}.0"]
            },
            /**********************
             * Queue Info Methods *
             **********************/
            totalBytes: {
                funcName: "fluid.uploader.fileQueue.sizeOfFiles",
                args: "{that}.files"
            },
            getReadyFiles: {
                funcName: "fluid.uploader.fileQueue.filesByStatus",
                args: ["{that}.files", ["QUEUED", "CANCELLED"]]
            },
            getErroredFiles: {
                funcName: "fluid.uploader.fileQueue.filesByStatus",
                args: ["{that}.files", "ERROR"]
            },
            getUploadedFiles: {
                funcName: "fluid.uploader.fileQueue.filesByStatus",
                args: ["{that}.files", "COMPLETE"]
            },
            sizeOfReadyFiles: {
                funcName: "fluid.uploader.fileQueue.sizeOfFilesByStatus",
                args: ["{that}.files", ["QUEUED", "CANCELLED"]]
            },
            sizeOfUploadedFiles: {
                funcName: "fluid.uploader.fileQueue.sizeOfFilesByStatus",
                args: ["{that}.files", "COMPLETE"]
            },
            /*****************
             * Batch Methods *
             *****************/
            setupCurrentBatch:  {
                funcName: "fluid.uploader.fileQueue.setupCurrentBatch",
                args: "{that}"
            },
            clearCurrentBatch:  {
                funcName: "fluid.uploader.fileQueue.clearCurrentBatch",
                args: "{that}"
            },
            updateCurrentBatch:  {
                funcName: "fluid.uploader.fileQueue.updateCurrentBatch",
                args: [{expander: {func: "{that}.getReadyFiles"}}, "{that}.currentBatch"]
            },
            updateBatchStatus:  {
                funcName: "fluid.uploader.fileQueue.updateBatchStatus",
                args: ["{arguments}.0", "{that}.currentBatch"]
            }
        }
    });
 
    fluid.uploader.fileQueue.start = function (that) {
        that.setupCurrentBatch();
        that.isUploading = true;
        that.shouldStop = false;
    };
 
    fluid.uploader.fileQueue.startFile = function (currentBatch) {
        currentBatch.fileIdx++;
        currentBatch.bytesUploadedForFile = 0;
        currentBatch.previousBytesUploadedForFile = 0;
    };
 
    fluid.uploader.fileQueue.finishFile = function (currentBatch) {
        currentBatch.numFilesCompleted++;
    };
 
    fluid.uploader.fileQueue.shouldUploadNextFile = function (that) {
        return !that.shouldStop &&
            that.isUploading &&
            (that.currentBatch.numFilesCompleted + that.currentBatch.numFilesErrored) <
            that.currentBatch.files.length;
    };
 
    fluid.uploader.fileQueue.addFile = function (files, file) {
        files.push(file);
    };
 
    fluid.uploader.fileQueue.removeFile = function (files, file) {
        fluid.remove_if(files, function (thisFile) {
            return file === thisFile;
        });
    };
 
    fluid.uploader.fileQueue.sizeOfFiles = function (files) {
        return fluid.accumulate(files, function (file, totalBytes) {
            return totalBytes + file.size;
        }, 0);
    };
 
    fluid.uploader.fileQueue.filterFiles = function (files, filterFn) {
        var filteredFiles = []; // filterFn returns TRUE for the files we want
        return fluid.remove_if(fluid.makeArray(files), filterFn, filteredFiles);
    };
 
    fluid.uploader.fileQueue.filesByStatus = function (files, statuses) {
        statuses = fluid.makeArray(statuses);
        return fluid.uploader.fileQueue.filterFiles(files, function (file) {
            return fluid.find_if(statuses, function (status) {
                return file.filestatus === fluid.uploader.fileStatusConstants[status];
            });
        });
    };
 
    fluid.uploader.fileQueue.sizeOfFilesByStatus = function (files, statuses) {
        files = fluid.uploader.fileQueue.filesByStatus(files, statuses);
        return fluid.uploader.fileQueue.sizeOfFiles(files);
    };
 
    fluid.uploader.fileQueue.setupCurrentBatch = function (that) {
        that.clearCurrentBatch();
        that.updateCurrentBatch();
    };
 
    fluid.uploader.fileQueue.clearCurrentBatch = function (that) {
        that.currentBatch = {
            fileIdx: 0,
            files: [],
            totalBytes: 0,
            numFilesCompleted: 0,
            numFilesErrored: 0,
            bytesUploadedForFile: 0,
            previousBytesUploadedForFile: 0,
            totalBytesUploaded: 0
        };
    };
 
    fluid.uploader.fileQueue.updateCurrentBatch = function (readyFiles, currentBatch) {
        currentBatch.files = readyFiles;
        currentBatch.totalBytes = fluid.uploader.fileQueue.sizeOfFiles(readyFiles);
    };
 
    fluid.uploader.fileQueue.updateBatchStatus = function (currentBytes, currentBatch) {
        var byteIncrement = currentBytes - currentBatch.previousBytesUploadedForFile;
        currentBatch.totalBytesUploaded += byteIncrement;
        currentBatch.bytesUploadedForFile += byteIncrement;
        currentBatch.previousBytesUploadedForFile = currentBytes;
    };
 
 
})(jQuery, fluid_3_0_0);