SoundSoftware Code Site

/* Redmine - project management software

   Copyright (C) 2006-2014  Jean-Philippe Lang */

function addFile(inputEl, file, eagerUpload) {

  if ($('#attachments_fields').children().length < 10) {

    var attachmentId = addFile.nextAttachmentId++;

    var fileSpan = $('<span>', { id: 'attachments_' + attachmentId });

    fileSpan.append(

        $('<input>', { type: 'text', 'class': 'filename readonly', name: 'attachments[' + attachmentId + '][filename]', readonly: 'readonly'} ).val(file.name),

        $('<input>', { type: 'text', 'class': 'description', name: 'attachments[' + attachmentId + '][description]', maxlength: 255, placeholder: $(inputEl).data('description-placeholder') } ).toggle(!eagerUpload),

        $('<a>&nbsp</a>').attr({ href: "#", 'class': 'remove-upload' }).click(removeFile).toggle(!eagerUpload)

    ).appendTo('#attachments_fields');

    if(eagerUpload) {

      ajaxUpload(file, attachmentId, fileSpan, inputEl);

    }

    return attachmentId;

  }

  return null;

}

addFile.nextAttachmentId = 1;

function ajaxUpload(file, attachmentId, fileSpan, inputEl) {

  function onLoadstart(e) {

    fileSpan.removeClass('ajax-waiting');

    fileSpan.addClass('ajax-loading');

    $('input:submit', $(this).parents('form')).attr('disabled', 'disabled');

  }

  function onProgress(e) {

    if(e.lengthComputable) {

      this.progressbar( 'value', e.loaded * 100 / e.total );

    }

  }

  function actualUpload(file, attachmentId, fileSpan, inputEl) {

    ajaxUpload.uploading++;

    uploadBlob(file, $(inputEl).data('upload-path'), attachmentId, {

        loadstartEventHandler: onLoadstart.bind(progressSpan),

        progressEventHandler: onProgress.bind(progressSpan)

      })

      .done(function(result) {

        progressSpan.progressbar( 'value', 100 ).remove();

        fileSpan.find('input.description, a').css('display', 'inline-block');

      })

      .fail(function(result) {

        progressSpan.text(result.statusText);

      }).always(function() {

        ajaxUpload.uploading--;

        fileSpan.removeClass('ajax-loading');

        var form = fileSpan.parents('form');

        if (form.queue('upload').length == 0 && ajaxUpload.uploading == 0) {

          $('input:submit', form).removeAttr('disabled');

        }

        form.dequeue('upload');

      });

  }

  var progressSpan = $('<div>').insertAfter(fileSpan.find('input.filename'));

  progressSpan.progressbar();

  fileSpan.addClass('ajax-waiting');

  var maxSyncUpload = $(inputEl).data('max-concurrent-uploads');

  if(maxSyncUpload == null || maxSyncUpload <= 0 || ajaxUpload.uploading < maxSyncUpload)

    actualUpload(file, attachmentId, fileSpan, inputEl);

  else

    $(inputEl).parents('form').queue('upload', actualUpload.bind(this, file, attachmentId, fileSpan, inputEl));

}

ajaxUpload.uploading = 0;

function removeFile() {

  $(this).parent('span').remove();

  return false;

}

function uploadBlob(blob, uploadUrl, attachmentId, options) {

  var actualOptions = $.extend({

    loadstartEventHandler: $.noop,

    progressEventHandler: $.noop

  }, options);

  uploadUrl = uploadUrl + '?attachment_id=' + attachmentId;

  if (blob instanceof window.File) {

    uploadUrl += '&filename=' + encodeURIComponent(blob.name);

  }

  return $.ajax(uploadUrl, {

    type: 'POST',

    contentType: 'application/octet-stream',

    beforeSend: function(jqXhr, settings) {

      jqXhr.setRequestHeader('Accept', 'application/js');

      // attach proper File object 

      settings.data = blob;

    },

    xhr: function() {

      var xhr = $.ajaxSettings.xhr();

      xhr.upload.onloadstart = actualOptions.loadstartEventHandler;

      xhr.upload.onprogress = actualOptions.progressEventHandler;

      return xhr;

    },

    data: blob,

    cache: false,

    processData: false

  });

}

function addInputFiles(inputEl) {

  var clearedFileInput = $(inputEl).clone().val('');

  if (inputEl.files) {

    // upload files using ajax

    uploadAndAttachFiles(inputEl.files, inputEl);

    $(inputEl).remove();

  } else {

    // browser not supporting the file API, upload on form submission

    var attachmentId;

    var aFilename = inputEl.value.split(/\/|\\/);

    attachmentId = addFile(inputEl, { name: aFilename[ aFilename.length - 1 ] }, false);

    if (attachmentId) {

      $(inputEl).attr({ name: 'attachments[' + attachmentId + '][file]', style: 'display:none;' }).appendTo('#attachments_' + attachmentId);

    }

  }

  clearedFileInput.insertAfter('#attachments_fields').on('change', function(){addInputFiles(this);});

}

function uploadAndAttachFiles(files, inputEl) {

  var maxFileSize = $(inputEl).data('max-file-size');

  var maxFileSizeExceeded = $(inputEl).data('max-file-size-message');

  var sizeExceeded = false;

  $.each(files, function() {

    if (this.size && maxFileSize != null && this.size > parseInt(maxFileSize)) {sizeExceeded=true;}

  });

  if (sizeExceeded) {

    window.alert(maxFileSizeExceeded);

  } else {

    $.each(files, function() {addFile(inputEl, this, true);});

  }

}

function handleFileDropEvent(e) {

  $(this).removeClass('fileover');

  blockEventPropagation(e);

  if ($.inArray('Files', e.dataTransfer.types) > -1) {

    uploadAndAttachFiles(e.dataTransfer.files, $('input:file.file_selector'));

  }

}

function dragOverHandler(e) {

  $(this).addClass('fileover');

  blockEventPropagation(e);

}

function dragOutHandler(e) {

  $(this).removeClass('fileover');

  blockEventPropagation(e);

}

function setupFileDrop() {

  if (window.File && window.FileList && window.ProgressEvent && window.FormData) {

    $.event.fixHooks.drop = { props: [ 'dataTransfer' ] };

    $('form div.box').has('input:file').each(function() {

      $(this).on({

          dragover: dragOverHandler,

          dragleave: dragOutHandler,

          drop: handleFileDropEvent

      });

    });

  }

}

$(document).ready(setupFileDrop);