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/**
* This file holds The SEO Framework plugin's JS code for Image Selection and Cropping.
* Serve JavaScript as an addition, not as an ends or means.
*
* @author Sybre Waaijer <https://cyberwire.nl/>
* @link <https://wordpress.org/plugins/autodescription/>
*/
/**
* The SEO Framework plugin
* Copyright (C) 2018 - 2023 Sybre Waaijer, CyberWire B.V. (https://cyberwire.nl/)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as published
* by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
'use strict';
/**
* Holds tsfMedia values in an object to avoid polluting global namespace.
*
* @since 3.1.0
*
* @constructor
* @param {!jQuery} $ jQuery object.
*/
window.tsfMedia = function( $ ) {
/**
* Data property injected by WordPress l10n handler.
*
* @since 3.1.0
* @access public
* @type {(Object<string, *>)|boolean|null} l10n Localized strings
*/
const l10n = 'undefined' !== typeof tsfMediaL10n && tsfMediaL10n;
/**
* Image Cropper instance.
*
* @since 3.1.0
* @access private
* @type {!Object} Cropper
*/
let Cropper = {};
/**
* Escapes HTML class or ID keys. Doesn't double-escape.
*
* @since ??? (never implemented)
* @access private
* @ignore
*
* @function
* @param {String} str
* @return {(string|undefined)} HTML to jQuery converted string
*/
// const escapeKey = str => {
// if ( str )
// return str.replace( /(?!\\)(?=[\[\]\/])/g, '\\' );
// return str;
// }
/**
* Opens the image editor on request.
*
* @since 4.0.0
* @access private
*
* @function
* @param {Event} event
*/
const _openImageEditor = event => {
const button = event.target;
if ( button.disabled || 'undefined' === typeof wp.media ) {
event.preventDefault();
event.stopPropagation();
return;
}
const imageType = button.dataset.inputType || '',
imageId = button.dataset.inputId || '';
let frame; // Backbone.js var.
event.preventDefault();
event.stopPropagation();
// Init extend Cropper.
_extendCropper();
const _states = {
suggestedWidth: +( button.dataset.width || 1200 ),
suggestedHeight: +( button.dataset.height || 630 ),
isFlex: +( button.dataset.flex || 1 ), // Dataset is string, "0" is a passable, useful value.
minWidth: +( button.dataset.minWidth || 200 ),
minHeight: +( button.dataset.minHeight || 200 ),
};
Cropper.control = {
params: {
flex_width: _states.isFlex ? 4096 : 0,
flex_height: _states.isFlex ? 4096 : 0,
width: _states.suggestedWidth,
height: _states.suggestedHeight,
isFlex: _states.isFlex,
minWidth: _states.minWidth,
minHeight: _states.minHeight,
},
};
frame = wp.media( {
button : {
text: l10n.labels[ imageType ].imgFrameButton,
close: false,
},
states: [
new wp.media.controller.Library( {
title: l10n.labels[ imageType ].imgFrameTitle,
library: wp.media.query({ 'type' : 'image' }),
multiple: false,
date: false,
priority: 20,
suggestedWidth: _states.suggestedWidth,
suggestedHeight: _states.suggestedHeight
} ),
new Cropper( {
imgSelectOptions: _calculateImageSelectOptions
} ),
],
} );
const inputUrl = document.getElementById( `${imageId}-url` ),
inputId = document.getElementById( `${imageId}-id` );
const onSelect = () => {
frame.setState( 'cropper' );
};
frame.off( 'select', onSelect );
frame.on( 'select', onSelect );
const onCropped = croppedImage => {
let url = croppedImage.url,
attachmentId = croppedImage.id;
// w = croppedImage.width,
// h = croppedImage.height;
if ( inputUrl ) {
inputUrl.value = url;
inputUrl.dispatchEvent( new Event( 'change' ) );
}
// Send the attachment id to our hidden input. URL to explicit output.
if ( inputId ) {
inputId.value = attachmentId;
inputId.dispatchEvent( new Event( 'change' ) );
}
};
frame.off( 'cropped', onCropped );
frame.on( 'cropped', onCropped );
const onSkippedCrop = selection => {
let url = selection.get( 'url' ),
attachmentId = selection.get( 'id' );
// w = selection.get( 'width' ),
// h = selection.get( 'height' );
if ( inputUrl ) {
inputUrl.value = url;
inputUrl.dispatchEvent( new Event( 'change' ) );
}
// Send the attachment id to our hidden input. URL to explicit output.
if ( inputId ) {
inputId.value = attachmentId;
inputId.dispatchEvent( new Event( 'change' ) );
}
};
frame.off( 'skippedcrop', onSkippedCrop );
frame.on( 'skippedcrop', onSkippedCrop );
const onDone = imageSelection => {
button.textContent = l10n.labels[ imageType ].imgChange;
if ( inputUrl ) {
inputUrl.readOnly = true;
}
_appendRemoveButton( button, true );
'tsfAys' in window && tsfAys.registerChange();
};
frame.off( 'skippedcrop cropped', onDone );
frame.on( 'skippedcrop cropped', onDone );
frame.open();
}
/**
* Removes the image editor image on request.
*
* @since 3.1.0
* @since 4.1.1 Removed second parameter, shifted third to second.
* @since 4.2.8 Now parses button classList data.
* @access private
*
* @function
* @param {Element} target event target
* @param {Boolean} animate Whether to fade in the button.
* @return {(undefined|null)}
*/
const _appendRemoveButton = ( target, animate ) => {
const inputId = target.dataset?.inputId,
inputType = target.dataset?.inputType;
if ( ! inputId || ! inputType ) return;
// Don't append another remove button if one's found.
if ( document.getElementById( `${inputId}-remove` ) ) return;
const button = document.createElement( 'button' );
button.type = 'button';
button.id = `${inputId}-remove`
button.dataset.inputId = inputId;
button.dataset.inputType = inputType;
button.title = tsf.decodeEntities( l10n.labels[ inputType ].imgRemoveTitle );
button.innerHTML = tsf.escapeString( tsf.decodeEntities( l10n.labels[ inputType ].imgRemove ) );
button.classList.add( 'tsf-remove-image-button', ...( JSON.parse( target.dataset?.buttonClass || 0 )?.remove || [] ) );
target.insertAdjacentElement( 'afterend', button );
if ( animate ) {
// What if we don't do this? Mind blown.
// TODO use tsf-fade-in CSS?
$( button ).css( 'opacity', 0 ).animate(
{ opacity: 1 },
{ queue: true, duration: 1000 }
);
}
// Reset cache.
_resetImageEditorRemovalActions();
}
/**
* Removes the image editor image on request.
*
* @since 4.0.0
* @access private
*
* @function
* @param {Event} event
*/
const _removeEditorImage = event => {
const imageId = event.target.dataset.inputId || '',
imageType = event.target.dataset.inputType || '';
if ( ! imageId || ! imageType ) return;
const inputSelect = document.getElementById( `${imageId}-select` );
// Another image remover is probably handling this entry.
if ( inputSelect.disabled ) return;
inputSelect.disabled = true;
inputSelect.classList.add( 'disabled' );
const inputRemove = document.getElementById( `${imageId}-remove` ); //= event.target (most likely)
if ( inputRemove ) {
inputRemove.disabled = true;
inputRemove.classList.add( 'disabled' );
// TODO use tsf-fade-out CSS?
$( inputRemove ).fadeOut( 250, () => {
inputRemove.remove();
inputSelect.textContent = l10n.labels[ imageType ].imgSelect;
inputSelect.classList.remove( 'disabled' );
inputSelect.disabled = false;
} );
}
const inputUrl = document.getElementById( `${imageId}-url` );
if ( inputUrl ) {
inputUrl.value = '';
inputUrl.dispatchEvent( new Event( 'change' ) );
if ( ! inputUrl.dataset.readonly ) { // this data entry should be added when the input should not be user-editable. Honor it.
inputUrl.readOnly = false;
}
}
const inputId = document.getElementById( `${imageId}-id` );
if ( inputId ) {
inputId.value = '';
inputId.dispatchEvent( new Event( 'change' ) );
}
'tsfAys' in window && tsfAys.registerChange();
}
/**
* Builds constructor for media Cropper.
*
* @since 3.1.0
* @access private
*
* @function
* @return {(undefined|null)}
*/
const _extendCropper = () => {
if ( 'undefined' !== typeof Cropper.control )
return;
const View = wp.media.view;
/**
* wp.media.view.Cropper augmentation.
*
* Allows for squaring images.
*
* @class
* @augments wp.media.View
* @augments wp.Backbone.View
* @augments Backbone.View
*/
const TSFView = View.Cropper.extend( {
className: 'crop-content tsf-image',
ready: function () {
View.Cropper.prototype.ready.apply( this, arguments );
},
onImageLoad: function() {
let imgOptions = this.controller.get( 'imgSelectOptions' ),
imgSelect;
if ( typeof imgOptions === 'function' )
imgOptions = imgOptions( this.options.attachment, this.controller );
//= Seriously Core team, was this condition too hard to implement?
if ( 'undefined' === typeof imgOptions.aspectRatio ) {
imgOptions = _.extend( imgOptions, {
parent: this.$el,
onInit: function() {
this.parent.children().on( 'mousedown touchstart', function( e ) {
if ( e.shiftKey ) {
imgSelect.setOptions( {
aspectRatio: '1:1'
} );
} else {
imgSelect.setOptions( {
aspectRatio: false
} );
}
} );
}
} );
}
this.trigger( 'image-loaded' );
imgSelect = this.controller.imgSelect = this.$image.imgAreaSelect( imgOptions );
},
} );
/**
* wp.media.controller.Cropper augmentation.
*
* A state for cropping an image.
*
* @class
* @augments wp.media.controller.Cropper
* @augments wp.media.controller.State
* @augments Backbone.Model
*/
const TSFCropper = wp.media.controller.Cropper.extend( {
createCropContent: function() {
this.cropperView = new TSFView( {
controller: this,
attachment: this.get( 'selection' ).first()
} );
this.cropperView.on( 'image-loaded', this.createCropToolbar, this );
this.frame.content.set( this.cropperView );
},
doCrop: function( attachment ) {
let cropDetails = attachment.get( 'cropDetails' ),
control = Cropper.control; // prototyped prior cropping, below.
// Use crop measurements when flexible in both directions.
if ( control.params.flex_width && control.params.flex_height ) {
// Square
if ( cropDetails.width === cropDetails.height ) {
if ( cropDetails.width > control.params.flex_width ) {
cropDetails.dst_width = cropDetails.dst_height = control.params.flex_width;
}
// Landscape/Portrait
} else {
// Resize to flex width/height
if ( cropDetails.width > control.params.flex_width || cropDetails.height > control.params.flex_height ) {
// Landscape
if ( cropDetails.width > cropDetails.height ) {
let _ratio = cropDetails.width / control.params.flex_width;
cropDetails.dst_width = control.params.flex_width;
cropDetails.dst_height = Math.round( cropDetails.height / _ratio );
// Portrait
} else {
let _ratio = cropDetails.height / control.params.flex_height;
cropDetails.dst_height = control.params.flex_height;
cropDetails.dst_width = Math.round( cropDetails.width / _ratio );
}
}
}
}
// Nothing happened. Set destination to 0 and let PHP figure it out.
if ( 'undefined' === typeof cropDetails.dst_width ) {
cropDetails.dst_width = 0;
cropDetails.dst_height = 0;
}
return wp.ajax.post(
'tsf_crop_image',
{
nonce: l10n.nonce,
id: attachment.get( 'id' ),
context: 'tsf-image',
cropDetails: cropDetails
}
);
}
} );
TSFCropper.prototype.control = {};
Cropper = TSFCropper;
}
/**
* Returns a set of options, computed from the attached image data and
* control-specific data, to be fed to the imgAreaSelect plugin in
* wp.media.view.Cropper.
*
* @since 3.1.0
* @access private
*
* @function
* @param {wp.media.model.Attachment} attachment
* @param {wp.media.controller.Cropper} controller
* @return {Object} imgSelectOptions
*/
const _calculateImageSelectOptions = ( attachment, controller ) => {
const control = Cropper.control;
let xInit = parseInt( control.params.width, 10 ),
yInit = parseInt( control.params.height, 10 );
const flexWidth = !! parseInt( control.params.flex_width, 10 ),
flexHeight = !! parseInt( control.params.flex_height, 10 );
const realWidth = attachment.get( 'width' ),
realHeight = attachment.get( 'height' ),
ratio = xInit / yInit,
xImg = xInit,
yImg = yInit;
let canSkipCrop;
if ( control.params.isFlex ) {
canSkipCrop = ! _mustBeCropped( control.params.flex_width, control.params.flex_height, realWidth, realHeight );
} else {
//= Not flex. If ratios match, then we can skip.
canSkipCrop = ratio === realWidth / realHeight;
}
controller.set( 'control', control.params );
controller.set( 'canSkipCrop', canSkipCrop );
// Correct aspect ratio if fixed.
if ( realWidth / realHeight > ratio ) {
yInit = realHeight;
xInit = yInit * ratio;
} else {
xInit = realWidth;
yInit = xInit / ratio;
}
// Find starting points, I think? Why do we halve this?
// This is taken from WordPress's very own '_calculateImageSelectOptions' as-is.
let x1 = ( realWidth - xInit ) / 2,
y1 = ( realHeight - yInit ) / 2;
const imgSelectOptions = {
handles: true,
keys: true,
instance: true,
persistent: true,
imageWidth: realWidth,
imageHeight: realHeight,
minWidth: xImg > xInit ? xInit : xImg,
minHeight: yImg > yInit ? yInit : yImg,
x1: x1,
y1: y1,
x2: xInit + x1,
y2: yInit + y1
};
// @TODO Convert set img min-width/height to output ratio.
// i.e. 200x2000 will become x = 1500/2000*200 = 150px, which is too small.
// Unlikely...
if ( ! control.params.isFlex ) {
imgSelectOptions.handles = 'corners';
imgSelectOptions.aspectRatio = `${xInit}:${yInit}`;
} else if ( ! flexHeight && ! flexWidth ) {
imgSelectOptions.aspectRatio = `${xInit}:${yInit}`;
} else {
if ( flexHeight ) {
imgSelectOptions.minHeight = control.params.minHeight;
imgSelectOptions.maxWidth = realWidth;
}
if ( flexWidth ) {
imgSelectOptions.minWidth = control.params.minWidth;
imgSelectOptions.maxHeight = realHeight;
}
}
return imgSelectOptions;
}
/**
* Return whether the image must be cropped, based on required dimensions.
* Disregards flexWidth/Height.
*
* @since 3.1.0
* @access private
*
* @function
* @param {Number} dstW
* @param {Number} dstH
* @param {Number} imgW
* @param {Number} imgH
* @return {Boolean}
*/
const _mustBeCropped = ( dstW, dstH, imgW, imgH ) => {
if ( imgW <= dstW && imgH <= dstH )
return false;
return true;
}
/**
* Updates button text on change.
*
* @since 4.1.0
* @access private
*
* @param {!jQuery.event} event
*/
const _updateButtonText = event => {
const imageId = event.target.dataset.id || '',
imageType = event.target.dataset.type || '';
if ( ! imageId || ! imageType ) return;
const inputSelect = document.getElementById( `${imageId}-select` );
// The image remover is probably handling this entry.
if ( inputSelect.disabled ) return;
inputSelect.textContent = event.target.value.length
? l10n.labels[ imageType ].imgChange
: l10n.labels[ imageType ].imgSelect;
}
/**
* Checks if input is filled in by image editor.
*
* @since 3.1.0
* @since 4.1.0 Now prepares an input change event.
* @access private
*
* @function
*/
const _checkImageEditorInput = () => {
document.querySelectorAll( '.tsf-set-image-button' ).forEach( element => {
const imageId = element.dataset.inputId || '',
inputId = imageId && document.getElementById( `${imageId}-id` ),
inputUrl = imageId && document.getElementById( `${imageId}-url` );
if ( inputId && inputId.value > 0 ) {
if ( inputUrl ) inputUrl.readOnly = true;
_appendRemoveButton( element, false );
}
if ( inputUrl ) {
inputUrl.addEventListener( 'change', _updateButtonText );
inputUrl.dispatchEvent( new Event( 'change' ) );
}
} );
}
/**
* Resets jQuery image editor cache for when the removal button appears.
*
* @since 3.1.0
* @access private
*
* @function
* @return {(undefined|null)}
*/
const _resetImageEditorSetActions = () => {
document.querySelectorAll( '.tsf-set-image-button' ).forEach( el => {
el.addEventListener( 'click', _openImageEditor );
} );
}
/**
* Resets jQuery image editor cache for when the removal button appears.
*
* @since 3.1.0
* @access private
*
* @function
* @return {(undefined|null)}
*/
const _resetImageEditorRemovalActions = () => {
document.querySelectorAll( '.tsf-remove-image-button' ).forEach( el => {
el.addEventListener( 'click', _removeEditorImage );
} );
}
/**
* Sets up jQuery image editor cache.
*
* @since 3.1.0
* @see tsfemMedia.setupImageEditorActions() (Extension Manager plugin)
* @access private
*
* @function
* @return {(undefined|null)}
*/
const _setupImageEditorActions = () => {
_resetImageEditorSetActions();
_resetImageEditorRemovalActions();
document.querySelectorAll( '.tsf-enable-media-if-js' ).forEach( el => {
el.disabled = false;
el.classList.remove( 'tsf-enable-media-if-js' );
} );
_checkImageEditorInput(); // This fires a change event... is that desired?
_prepareTooltip();
}
let _debounceActionReset = void 0;
/**
* Resets image editor actions and selectors.
*
* @since 4.1.2
* @uses _setupImageEditorActions
* @access public
*
* @function
* @return {(undefined|null)}
*/
const resetImageEditorActions = () => {
clearTimeout( _debounceActionReset );
// High timeout. Resets should only happen during failures or changing document states; the latter of which is slow.
_debounceActionReset = setTimeout( _setupImageEditorActions, 500 );
}
let _updateToolTipBuffer = {};
/**
* Updates the input's parentNode tooltip input.
*
* @since 4.1.4
*
* @param {Event} event
* @function
* @return {(undefined|null)}
*/
const _updateToolTip = event => {
const imageId = _inferImageId( event.target.id || '' ),
preview = imageId && document.getElementById( `${imageId}-preview` );
if ( ! preview ) return;
( imageId in _updateToolTipBuffer ) && clearTimeout( _updateToolTipBuffer[ imageId ] );
let pageLoaded = preview.dataset.tsfLoaded || false;
preview.dataset.tsfLoaded = 1;
let src = event.target.value || event.target.placeholder || '';
const updateToolTip = () => {
// The maxWidth is defined at tsfTT.doTooltip(), where the tooltip has 12px padding.
// Remove 1 to account for floating point errors.
// let maxWidth = 250 - ( 12 * 2 ) - 1 + 'px'; // this is just 225px...
let // style = `max-width:${maxWidth};max-height:${maxWidth};min-width:60px;min-height:60px;border-radius:3px;display:block;`;
style = "max-width:225px;max-height:225px;min-width:60px;min-height:60px;border-radius:3px;display:block;";
// We set min-height and width as that will prevent jumping. Also, those are the absolute-minimum for sharing/schema images.
if ( ! src.length ) {
if ( pageLoaded ) {
// TODO use tsf-fade-out CSS?
$( preview ).not( ':hidden' ).fadeOut( 250 );
} else {
$( preview ).hide();
}
return;
}
/**
* XSS tests that passed (i.e., no issue), because the --browser-- must (and does) block these:
* - data:text/html;base64,amF2YXNjcmlwdDphbGVydCgnaGknKTs=
* - svg loading with scripts attached (CORB blocks, good. Thank you for bringing attention, Meltdown & Spectr)
*
* CSRF should be blocked by the browser, as well. Otherwise, Authors and Editors are able to execute
* these via the default WordPress editor, already.
*
* URLs that aren't trusted are also filtered via sanitization on save, using `the_seo_framework()->s_url_query()`.
*
* We are NOT creating a document node here, that's something we leave for the tooltip.
*/
preview.dataset.desc = `<img src=${tsf.escapeString( src )} style="${style}" />`;
if ( pageLoaded ) {
// TODO use tsf-fade-out CSS?
$( preview ).not( ':visible' ).fadeIn( 250 );
} else {
$( preview ).show();
}
// Preload image. The same security notes apply as above. Moreover, the Image object escapes:
// ( new Image() ).src = '"/><script>alert(\'XSS\');</script>';
( new Image() ).src = src;
tsfTT.triggerUpdate( preview );
}
_updateToolTipBuffer[ imageId ] = setTimeout(
updateToolTip,
// High timeout: Don't DoS the inputted URL, plus the delay is quite nice. This equals to about 522ms.
// Invoke instantly when removing, otherwise it lags behind the removal button's animation.
pageLoaded && src.length ? 1000/(115/60) : 0 // Magic number: 115 Keys/Min is considered a "slow" typer. ISBN: 978-3-319-20498-7
);
}
/**
* Sets up image input tooltip handler.
*
* @since 4.0.0
* @access private
*
* @function
* @return {(undefined|null)}
*/
const _prepareTooltip = () => {
// Prepare tooltip updates.
document.querySelectorAll( '.tsf-image-preview' ).forEach( el => {
const inputUrl = document.getElementById( `${el.dataset.for}-url` );
if ( ! inputUrl ) return;
inputUrl.addEventListener( 'input', _updateToolTip );
inputUrl.addEventListener( 'change', _updateToolTip );
inputUrl.dispatchEvent( new Event( 'change' ) );
} );
}
/**
* Infers ID based on `the_seo_framework()->get_social_image_uploader_form( $id )` output.
*
* @since 4.1.1
*
* @function
* @param {string} id
* @return {string}
*/
const _inferImageId = id => id.replace( /-[a-z]+$/, '' );
return Object.assign( {
/**
* Initialises all aspects of the scripts.
* You shouldn't call this.
*
* @since 3.1.0
* @access protected
*
* @function
*/
load: () => {
// Initialize image uploader button cache.
document.body.addEventListener( 'tsf-ready', _setupImageEditorActions );
}
}, {
resetImageEditorActions,
}, {
l10n
} );
}( jQuery );
window.tsfMedia.load();