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/**
* @file
* Drag+drop based in-place editor for images.
*/
(function ($, _, Drupal) {
'use strict';
Drupal.quickedit.editors.image = Drupal.quickedit.EditorView.extend(/** @lends Drupal.quickedit.editors.image# */{
/**
* @constructs
*
* @augments Drupal.quickedit.EditorView
*
* @param {object} options
* Options for the image editor.
*/
initialize: function (options) {
Drupal.quickedit.EditorView.prototype.initialize.call(this, options);
// Set our original value to our current HTML (for reverting).
this.model.set('originalValue', this.$el.html().trim());
// $.val() callback function for copying input from our custom form to
// the Quick Edit Field Form.
this.model.set('currentValue', function (index, value) {
var matches = $(this).attr('name').match(/(alt|title)]$/);
if (matches) {
var name = matches[1];
var $toolgroup = $('#' + options.fieldModel.toolbarView.getMainWysiwygToolgroupId());
var $input = $toolgroup.find('.quickedit-image-field-info input[name="' + name + '"]');
if ($input.length) {
return $input.val();
}
}
});
},
/**
* @inheritdoc
*
* @param {Drupal.quickedit.FieldModel} fieldModel
* The field model that holds the state.
* @param {string} state
* The state to change to.
* @param {object} options
* State options, if needed by the state change.
*/
stateChange: function (fieldModel, state, options) {
var from = fieldModel.previous('state');
switch (state) {
case 'inactive':
break;
case 'candidate':
if (from !== 'inactive') {
this.$el.find('.quickedit-image-dropzone').remove();
this.$el.removeClass('quickedit-image-element');
}
if (from === 'invalid') {
this.removeValidationErrors();
}
break;
case 'highlighted':
break;
case 'activating':
// Defer updating the field model until the current state change has
// propagated, to not trigger a nested state change event.
_.defer(function () {
fieldModel.set('state', 'active');
});
break;
case 'active':
var self = this;
// Indicate that this element is being edited by Quick Edit Image.
this.$el.addClass('quickedit-image-element');
// Render our initial dropzone element. Once the user reverts changes
// or saves a new image, this element is removed.
var $dropzone = this.renderDropzone('upload', Drupal.t('Drop file here or click to upload'));
$dropzone.on('dragenter', function (e) {
$(this).addClass('hover');
});
$dropzone.on('dragleave', function (e) {
$(this).removeClass('hover');
});
$dropzone.on('drop', function (e) {
// Only respond when a file is dropped (could be another element).
if (e.originalEvent.dataTransfer && e.originalEvent.dataTransfer.files.length) {
$(this).removeClass('hover');
self.uploadImage(e.originalEvent.dataTransfer.files[0]);
}
});
$dropzone.on('click', function (e) {
// Create an <input> element without appending it to the DOM, and
// trigger a click event. This is the easiest way to arbitrarily
// open the browser's upload dialog.
$('<input type="file">')
.trigger('click')
.on('change', function () {
if (this.files.length) {
self.uploadImage(this.files[0]);
}
});
});
// Prevent the browser's default behavior when dragging files onto
// the document (usually opens them in the same tab).
$dropzone.on('dragover dragenter dragleave drop click', function (e) {
e.preventDefault();
e.stopPropagation();
});
this.renderToolbar(fieldModel);
break;
case 'changed':
break;
case 'saving':
if (from === 'invalid') {
this.removeValidationErrors();
}
this.save(options);
break;
case 'saved':
break;
case 'invalid':
this.showValidationErrors();
break;
}
},
/**
* Validates/uploads a given file.
*
* @param {File} file
* The file to upload.
*/
uploadImage: function (file) {
// Indicate loading by adding a special class to our icon.
this.renderDropzone('upload loading', Drupal.t('Uploading <i>@file</i>…', {'@file': file.name}));
// Build a valid URL for our endpoint.
var fieldID = this.fieldModel.get('fieldID');
var url = Drupal.quickedit.util.buildUrl(fieldID, Drupal.url('quickedit/image/upload/!entity_type/!id/!field_name/!langcode/!view_mode'));
// Construct form data that our endpoint can consume.
var data = new FormData();
data.append('files[image]', file);
// Construct a POST request to our endpoint.
var self = this;
this.ajax({
type: 'POST',
url: url,
data: data,
success: function (response) {
var $el = $(self.fieldModel.get('el'));
// Indicate that the field has changed - this enables the
// "Save" button.
self.fieldModel.set('state', 'changed');
self.fieldModel.get('entity').set('inTempStore', true);
self.removeValidationErrors();
// Replace our html with the new image. If we replaced our entire
// element with data.html, we would have to implement complicated logic
// like what's in Drupal.quickedit.AppView.renderUpdatedField.
var $content = $(response.html).closest('[data-quickedit-field-id]').children();
$el.empty().append($content);
}
});
},
/**
* Utility function to make an AJAX request to the server.
*
* In addition to formatting the correct request, this also handles error
* codes and messages by displaying them visually inline with the image.
*
* Drupal.ajax is not called here as the Form API is unused by this
* in-place editor, and our JSON requests/responses try to be
* editor-agnostic. Ideally similar logic and routes could be used by
* modules like CKEditor for drag+drop file uploads as well.
*
* @param {object} options
* Ajax options.
* @param {string} options.type
* The type of request (i.e. GET, POST, PUT, DELETE, etc.)
* @param {string} options.url
* The URL for the request.
* @param {*} options.data
* The data to send to the server.
* @param {function} options.success
* A callback function used when a request is successful, without errors.
*/
ajax: function (options) {
var defaultOptions = {
context: this,
dataType: 'json',
cache: false,
contentType: false,
processData: false,
error: function () {
this.renderDropzone('error', Drupal.t('A server error has occurred.'));
}
};
var ajaxOptions = $.extend(defaultOptions, options);
var successCallback = ajaxOptions.success;
// Handle the success callback.
ajaxOptions.success = function (response) {
if (response.main_error) {
this.renderDropzone('error', response.main_error);
if (response.errors.length) {
this.model.set('validationErrors', response.errors);
}
this.showValidationErrors();
}
else {
successCallback(response);
}
};
$.ajax(ajaxOptions);
},
/**
* Renders our toolbar form for editing metadata.
*
* @param {Drupal.quickedit.FieldModel} fieldModel
* The current Field Model.
*/
renderToolbar: function (fieldModel) {
var $toolgroup = $('#' + fieldModel.toolbarView.getMainWysiwygToolgroupId());
var $toolbar = $toolgroup.find('.quickedit-image-field-info');
if ($toolbar.length === 0) {
// Perform an AJAX request for extra image info (alt/title).
var fieldID = fieldModel.get('fieldID');
var url = Drupal.quickedit.util.buildUrl(fieldID, Drupal.url('quickedit/image/info/!entity_type/!id/!field_name/!langcode/!view_mode'));
var self = this;
self.ajax({
type: 'GET',
url: url,
success: function (response) {
$toolbar = $(Drupal.theme.quickeditImageToolbar(response));
$toolgroup.append($toolbar);
$toolbar.on('keyup paste', function () {
fieldModel.set('state', 'changed');
});
// Re-position the toolbar, which could have changed size.
fieldModel.get('entity').toolbarView.position();
}
});
}
},
/**
* Renders our dropzone element.
*
* @param {string} state
* The current state of our editor. Only used for visual styling.
* @param {string} text
* The text to display in the dropzone area.
*
* @return {jQuery}
* The rendered dropzone.
*/
renderDropzone: function (state, text) {
var $dropzone = this.$el.find('.quickedit-image-dropzone');
// If the element already exists, modify its contents.
if ($dropzone.length) {
$dropzone
.removeClass('upload error hover loading')
.addClass('.quickedit-image-dropzone ' + state)
.children('.quickedit-image-text')
.html(text);
}
else {
$dropzone = $(Drupal.theme('quickeditImageDropzone', {
state: state,
text: text
}));
this.$el.append($dropzone);
}
return $dropzone;
},
/**
* @inheritdoc
*/
revert: function () {
this.$el.html(this.model.get('originalValue'));
},
/**
* @inheritdoc
*/
getQuickEditUISettings: function () {
return {padding: false, unifiedToolbar: true, fullWidthToolbar: true, popup: false};
},
/**
* @inheritdoc
*/
showValidationErrors: function () {
var errors = Drupal.theme('quickeditImageErrors', {
errors: this.model.get('validationErrors')
});
$('#' + this.fieldModel.toolbarView.getMainWysiwygToolgroupId())
.append(errors);
this.getEditedElement()
.addClass('quickedit-validation-error');
// Re-position the toolbar, which could have changed size.
this.fieldModel.get('entity').toolbarView.position();
},
/**
* @inheritdoc
*/
removeValidationErrors: function () {
$('#' + this.fieldModel.toolbarView.getMainWysiwygToolgroupId())
.find('.quickedit-image-errors').remove();
this.getEditedElement()
.removeClass('quickedit-validation-error');
}
});
})(jQuery, _, Drupal);