Proyectos de Subversion Moodle

var H5PEditor = window.H5PEditor = window.H5PEditor || {};

var ns = H5PEditor;

/**

 * Adds an image upload field with image editing tool to the form.

 *

 * @param {Object} parent Parent widget of this widget

 * @param {Object} field Semantic fields

 * @param {Object} params Existing image parameters

 * @param {function} setValue Function for updating parameters

 * @returns {ns.widgets.image}

 */

ns.widgets.image = function (parent, field, params, setValue) {

  var self = this;

  // Initialize inheritance

  ns.File.call(self, parent, field, params, setValue);

  this.parent = parent;

  this.field = field;

  this.params = params;

  this.setValue = setValue;

  this.library = parent.library + '/' + field.name;

  this.id = ns.getNextFieldId(field);

  if (params !== undefined) {

    this.copyright = params.copyright;

  }

  // Keep track of editing image

  this.isEditing = false;

  // Keep track of type of image that is being uploaded

  this.isOriginalImage = false;

  this.changes = [];

  this.passReadies = true;

  parent.ready(function () {

    self.passReadies = false;

  });

  this.confirmationDialog = new H5P.ConfirmationDialog({

    headerText: H5PEditor.t('core', 'removeImage'),

    bodyText: H5PEditor.t('core', 'confirmImageRemoval')

  });

  this.confirmationDialog.on('confirmed', function () {

    self.removeImage();

  });

  // When uploading starts

  self.on('upload', function () {

    // Hide edit image button

    self.$editImage.addClass('hidden');

  });

  // When a new file has been uploaded

  self.on('fileUploaded', function (event) {

    // Uploaded new original image

    if (self.isOriginalImage) {

      delete self.params.originalImage;

      self.editImagePopup.mime = self.params.mime

    }

    // Store width and height

    self.params.width = event.data.width;

    self.params.height = event.data.height;

    // Show edit image button

    self.$editImage.removeClass('hidden');

    self.isEditing = false;

  });

};

ns.widgets.image.prototype = Object.create(ns.File.prototype);

ns.widgets.image.prototype.constructor = ns.widgets.image;

/**

 * Append field to the given wrapper.

 *

 * @param {jQuery} $wrapper

 */

ns.widgets.image.prototype.appendTo = function ($wrapper) {

  var self = this;

  var htmlString = '<div class="file"></div>' +

    '<div class="h5p-editor-image-buttons">' +

      '<button class="h5peditor-button-textual h5p-editing-image-button">' + ns.t('core', 'editImage') + '</button>';

  if (!this.field.disableCopyright) {

    htmlString += '<button class="h5peditor-button-textual h5p-copyright-button">' + ns.t('core', 'editCopyright') + '</button>';

  }

  htmlString += '</div>' +

    '<div class="h5p-editor-dialog">' +

      '<a href="#" class="h5p-close" title="' + ns.t('core', 'close') + '"></a>' +

    '</div>';

  var html = ns.createFieldMarkup(this.field, htmlString, this.id);

  var $container = ns.$(html).appendTo($wrapper);

  this.$item = $container;

  this.$editImage = $container.find('.h5p-editing-image-button');

  this.$copyrightButton = $container.find('.h5p-copyright-button');

  this.$file = $container.find('.file');

  this.$errors = $container.find('.h5p-errors');

  this.addFile();

  var $dialog = $container.find('.h5p-editor-dialog');

  $container.find('.h5p-copyright-button').add($dialog.find('.h5p-close')).click(function () {

    $dialog.toggleClass('h5p-open');

    return false;

  });

  var editImagePopup = self.editImagePopup = new H5PEditor.ImageEditingPopup(this.field.ratio);

  editImagePopup.on('savedImage', function (e) {

    // Not editing any longer

    self.isEditing = false;

    // No longer an original image

    self.isOriginalImage = false;

    // Set current source as original image, if no original image

    if (!self.params.originalImage) {

      self.params.originalImage = {

        path: self.params.path,

        mime: self.params.mime,

        height: self.params.height,

        width: self.params.width

      };

    }

    const filenameparts = self.params.path.match(/([^\/]+)\.([^#]+)/);

    // Upload new image

    self.upload(e.data, filenameparts[1] + '-edit.' + filenameparts[2]);

  });

  editImagePopup.on('resetImage', function () {

    editImagePopup.setImage(self.params.originalImage ? self.params.originalImage : self.params);

  });

  editImagePopup.on('canceled', function () {

    self.isEditing = false;

  });

  editImagePopup.on('initialized', function () {

    // Remove throbber from image

    self.$editImage.removeClass('loading');

  });

  $container.find('.h5p-editing-image-button').click(function () {

    if (self.params && self.params.path) {

      var imageSrc;

      if (!self.isEditing) {

        imageSrc = self.params;

        self.isEditing = true;

      }

      self.$editImage.toggleClass('loading');

      // Add throbber to image

      editImagePopup.show(ns.$(this).offset(), imageSrc);

    }

  });

  ns.File.addCopyright(self, $dialog, function (field, value) {

    if (self.params !== undefined) {

      self.params.copyright = value;

    }

    self.copyright = value;

  });

};

/**

 * Sync copyright.

 */

ns.widgets.image.prototype.setCopyright = function (value) {

  this.copyright = this.params.copyright = value;

};

/**

 * Creates thumbnail HTML and actions.

 *

 * @returns {boolean} True if file was added, false if file was removed

 */

ns.widgets.image.prototype.addFile = function () {

  var that = this;

  if (this.params === undefined) {

    // No image look

    let html = '<a href="#" id="' + this.id + '" class="add"';

    if (this.field.description !== undefined) {

      html += ' aria-describedby="' + ns.getDescriptionId(this.id) + '"';

    }

    html += ' title="' + ns.t('core', 'addFile') + '">' +

      '<div class="h5peditor-field-file-upload-text">' + ns.t('core', 'add') + '</div>' +

    '</a>'

    this.$file

      .html(html)

      .children('.add')

      .click(function () {

        that.isOriginalImage = true;

        that.openFileSelector();

        return false;

      });

    // Remove edit image button

    this.$editImage.addClass('hidden');

    this.$copyrightButton.addClass('hidden');

    this.isEditing = false;

    return false;

  }

  var source = H5P.getPath(this.params.path, H5PEditor.contentId);

  var altText = (this.field.label === undefined ? '' : this.field.label);

  var fileHtmlString = '<a href="#" id="' + this.id + '" title="' + ns.t('core', 'changeFile') + '" class="thumbnail"';

  if (this.field.description !== undefined) {

    fileHtmlString += ' aria-describedby="' + ns.getDescriptionId(this.id) + '"';

  }

  fileHtmlString += '><img alt="' + altText + '"/></a>' +

    '<a href="#" class="remove" title="' + ns.t('core', 'removeFile') + '"></a>';

  this.$file.html(fileHtmlString)

    .children(':eq(0)')

    .click(function () {

      that.isOriginalImage = true;

      that.openFileSelector();

      return false;

    })

    .children('img')

    .attr('src', source)

    .end()

    .next()

    .click(function () {

      that.confirmRemovalDialog.show(that.$file.offset().top);

      return false;

    });

  var $img = this.$file.find('img');

  $img.one('load', function () {

    // Make editor resize

    $img.addClass('loaded');

  });

  // Uploading original image

  that.$editImage.removeClass('hidden');

  that.$copyrightButton.removeClass('hidden');

  // Notify listeners that image was changed to params

  that.trigger('changedImage', this.params);

  return true;

};

/**

 * Remove image

 */

ns.widgets.image.prototype.removeImage = function () {

  // Notify listeners that we removed image with params

  this.trigger('removedImage', this.params);

  delete this.params;

  this.setValue(this.field);

  this.addFile();

  for (var i = 0; i < this.changes.length; i++) {

    this.changes[i]();

  }

};

/**

 * Validate this item

 */

ns.widgets.image.prototype.validate = function () {

  return true;

};

/**

 * Remove this item.

 */

ns.widgets.image.prototype.remove = function () {

  // TODO: Check what happens when removed during upload.

  this.$file.parent().remove();

};

/**

 * Collect functions to execute once the tree is complete.

 *

 * @param {function} ready

 */

ns.widgets.image.prototype.ready = function (ready) {

  if (this.passReadies) {

    this.parent.ready(ready);

  }

  else {

    ready();

  }

};