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Accessibility: Media: Improve accessibility of the status and error messages in the Image Editor. 

- improves focus management by moving focus to the notices, if any, or to the first "tabbable" element
- this avoids a focus loss and helps Braille-only and screen magnification users to be aware of the messages
- adds an ARIA role `alert` to all the notices 
- uses `wp.a11y.speak()` to announce messages to assistive technology
- this way, all visual users will see the messages while assistive technology users will get an audible message
- uses `wp.i18n` for translatable strings in `wp-admin/js/image-edit.js`

Props anevins, ryanshoover, antpb, SergeyBiryukov, afercia.
See #20491.
Fixes #47147.

Built from https://develop.svn.wordpress.org/trunk@48375


git-svn-id: http://core.svn.wordpress.org/trunk@48144 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Andrea Fercia 2020-07-07 13:45:02 +00:00
parent 181717c9ab
commit aee4324b9e
10 changed files with 128 additions and 64 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
wp-admin/includes/ajax-actions.php
View File

@ -2607,8 +2607,11 @@ function wp_ajax_image_editor() {
switch ( $_POST['do'] ) {
case 'save':
$msg = wp_save_image( $attachment_id );
$msg = wp_json_encode( $msg );
wp_die( $msg );
if ( $msg->error ) {
wp_send_json_error( $msg );
}
wp_send_json_success( $msg );
break;
case 'scale':
$msg = wp_save_image( $attachment_id );
@ -2618,8 +2621,25 @@ function wp_ajax_image_editor() {
break;
}
ob_start();
wp_image_editor( $attachment_id, $msg );
wp_die();
$html = ob_get_clean();
if ( $msg->error ) {
wp_send_json_error(
array(
'message' => $msg,
'html' => $html,
)
);
}
wp_send_json_success(
array(
'message' => $msg,
'html' => $html,
)
);
}
/**

12
wp-admin/includes/image-edit.php
View File

@ -38,9 +38,9 @@ function wp_image_editor( $post_id, $msg = false ) {
if ( $msg ) {
if ( isset( $msg->error ) ) {
$note = "<div class='error'><p>$msg->error</p></div>";
$note = "<div class='notice notice-error' tabindex='-1' role='alert'><p>$msg->error</p></div>";
} elseif ( isset( $msg->msg ) ) {
$note = "<div class='updated'><p>$msg->msg</p></div>";
$note = "<div class='notice notice-success' tabindex='-1' role='alert'><p>$msg->msg</p></div>";
}
}
@ -103,7 +103,7 @@ function wp_image_editor( $post_id, $msg = false ) {
<div class="imgedit-group">
<div class="imgedit-group-top">
<h2><?php _e( 'Scale Image' ); ?></h2>
<button type="button" class="dashicons dashicons-editor-help imgedit-help-toggle" onclick="imageEdit.toggleHelp(this);return false;" aria-expanded="false"><span class="screen-reader-text"><?php esc_html_e( 'Scale Image Help' ); ?></span></button>
<button type="button" class="dashicons dashicons-editor-help imgedit-help-toggle" onclick="imageEdit.toggleHelp(this);" aria-expanded="false"><span class="screen-reader-text"><?php esc_html_e( 'Scale Image Help' ); ?></span></button>
<div class="imgedit-help">
<p><?php _e( 'You can proportionally scale the original image. For best results, scaling should be done before you crop, flip, or rotate. Images can only be scaled down, not up.' ); ?></p>
</div>
@ -141,7 +141,7 @@ function wp_image_editor( $post_id, $msg = false ) {
<div class="imgedit-group">
<div class="imgedit-group-top">
<h2><button type="button" onclick="imageEdit.toggleHelp(this);" class="button-link"><?php _e( 'Restore Original Image' ); ?> <span class="dashicons dashicons-arrow-down imgedit-help-toggle"></span></button></h2>
<h2><button type="button" onclick="imageEdit.toggleHelp(this);" class="button-link" aria-expanded="false"><?php _e( 'Restore original image' ); ?> <span class="dashicons dashicons-arrow-down imgedit-help-toggle"></span></button></h2>
<div class="imgedit-help imgedit-restore">
<p>
<?php
@ -164,7 +164,7 @@ function wp_image_editor( $post_id, $msg = false ) {
<div class="imgedit-group">
<div class="imgedit-group-top">
<h2><?php _e( 'Image Crop' ); ?></h2>
<button type="button" class="dashicons dashicons-editor-help imgedit-help-toggle" onclick="imageEdit.toggleHelp(this);return false;" aria-expanded="false"><span class="screen-reader-text"><?php esc_html_e( 'Image Crop Help' ); ?></span></button>
<button type="button" class="dashicons dashicons-editor-help imgedit-help-toggle" onclick="imageEdit.toggleHelp(this);" aria-expanded="false"><span class="screen-reader-text"><?php esc_html_e( 'Image Crop Help' ); ?></span></button>
<div class="imgedit-help">
<p><?php _e( 'To crop the image, click on it and drag to make your selection.' ); ?></p>
@ -209,7 +209,7 @@ function wp_image_editor( $post_id, $msg = false ) {
<div class="imgedit-group imgedit-applyto">
<div class="imgedit-group-top">
<h2><?php _e( 'Thumbnail Settings' ); ?></h2>
<button type="button" class="dashicons dashicons-editor-help imgedit-help-toggle" onclick="imageEdit.toggleHelp(this);return false;" aria-expanded="false"><span class="screen-reader-text"><?php esc_html_e( 'Thumbnail Settings Help' ); ?></span></button>
<button type="button" class="dashicons dashicons-editor-help imgedit-help-toggle" onclick="imageEdit.toggleHelp(this);" aria-expanded="false"><span class="screen-reader-text"><?php esc_html_e( 'Thumbnail Settings Help' ); ?></span></button>
<div class="imgedit-help">
<p><?php _e( 'You can edit the image while preserving the thumbnail. For example, you may wish to have a square thumbnail that displays just a section of the image.' ); ?></p>
</div>

130
wp-admin/js/image-edit.js
View File

@ -5,9 +5,10 @@
* @output wp-admin/js/image-edit.js
*/
/* global imageEditL10n, ajaxurl, confirm */
/* global ajaxurl, confirm */
(function($) {
var __ = wp.i18n.__;
/**
* Contains all the methods to initialise and control the image editor.
@ -137,28 +138,34 @@
}
});
$( document ).on( 'image-editor-image-loaded', this.focusManager );
$( document ).on( 'image-editor-ui-ready', this.focusManager );
},
/**
* Toggles the wait/load icon in the editor.
*
* @since 2.9.0
* @since 5.5.0 Added the triggerUIReady parameter.
*
* @memberof imageEdit
*
* @param {number} postid The post ID.
* @param {number} toggle Is 0 or 1, fades the icon in then 1 and out when 0.
* @param {number} postid The post ID.
* @param {number} toggle Is 0 or 1, fades the icon in when 1 and out when 0.
* @param {boolean} triggerUIReady Whether to trigger a custom event when the UI is ready. Default false.
*
* @return {void}
*/
toggleEditor : function(postid, toggle) {
toggleEditor: function( postid, toggle, triggerUIReady ) {
var wait = $('#imgedit-wait-' + postid);
if ( toggle ) {
wait.fadeIn( 'fast' );
} else {
wait.fadeOut('fast');
wait.fadeOut( 'fast', function() {
if ( triggerUIReady ) {
$( document ).trigger( 'image-editor-ui-ready' );
}
} );
}
},
@ -402,10 +409,16 @@
t.toggleEditor(postid, 0);
})
.on('error', function() {
$('#imgedit-crop-' + postid).empty().append('<div class="error"><p>' + imageEditL10n.error + '</p></div>');
t.toggleEditor(postid, 0);
})
.on( 'error', function() {
var errorMessage = __( 'Could not load the preview image. Please reload the page and try again.' );
$( '#imgedit-crop-' + postid )
.empty()
.append( '<div class="notice notice-error" tabindex="-1" role="alert"><p>' + errorMessage + '</p></div>' );
t.toggleEditor( postid, 0, true );
wp.a11y.speak( errorMessage, 'assertive' );
} )
.attr('src', ajaxurl + '?' + $.param(data));
},
/**
@ -466,14 +479,24 @@
}
t.toggleEditor(postid, 1);
$.post(ajaxurl, data, function(r) {
$('#image-editor-' + postid).empty().append(r);
t.toggleEditor(postid, 0);
$.post( ajaxurl, data, function( response ) {
$( '#image-editor-' + postid ).empty().append( response.data.html );
t.toggleEditor( postid, 0, true );
// Refresh the attachment model so that changes propagate.
if ( t._view ) {
t._view.refresh();
}
});
} ).done( function( response ) {
// Whether the executed action was `scale` or `restore`, the response does have a message.
if ( response && response.data.message.msg ) {
wp.a11y.speak( response.data.message.msg );
return;
}
if ( response && response.data.message.error ) {
wp.a11y.speak( response.data.message.error );
}
} );
},
/**
@ -511,27 +534,30 @@
'do': 'save'
};
// Post the image edit data to the backend.
$.post(ajaxurl, data, function(r) {
// Read the response.
var ret = JSON.parse(r);
$.post( ajaxurl, data, function( response ) {
// If a response is returned, close the editor and show an error.
if ( ret.error ) {
$('#imgedit-response-' + postid).html('<div class="error"><p>' + ret.error + '</p></div>');
if ( response.data.error ) {
$( '#imgedit-response-' + postid )
.html( '<div class="notice notice-error" tabindex="-1" role="alert"><p>' + response.data.error + '</p></div>' );
imageEdit.close(postid);
wp.a11y.speak( response.data.error );
return;
}
if ( ret.fw && ret.fh ) {
$('#media-dims-' + postid).html( ret.fw + ' &times; ' + ret.fh );
if ( response.data.fw && response.data.fh ) {
$( '#media-dims-' + postid ).html( response.data.fw + ' &times; ' + response.data.fh );
}
if ( ret.thumbnail ) {
$('.thumbnail', '#thumbnail-head-' + postid).attr('src', ''+ret.thumbnail);
if ( response.data.thumbnail ) {
$( '.thumbnail', '#thumbnail-head-' + postid ).attr( 'src', '' + response.data.thumbnail );
}
if ( ret.msg ) {
$('#imgedit-response-' + postid).html('<div class="updated"><p>' + ret.msg + '</p></div>');
if ( response.data.msg ) {
$( '#imgedit-response-' + postid )
.html( '<div class="notice notice-success" tabindex="-1" role="alert"><p>' + response.data.msg + '</p></div>' );
wp.a11y.speak( response.data.msg );
}
if ( self._view ) {
@ -559,8 +585,11 @@
open : function( postid, nonce, view ) {
this._view = view;
var dfd, data, elem = $('#image-editor-' + postid), head = $('#media-head-' + postid),
btn = $('#imgedit-open-btn-' + postid), spin = btn.siblings('.spinner');
var dfd, data,
elem = $( '#image-editor-' + postid ),
head = $( '#media-head-' + postid ),
btn = $( '#imgedit-open-btn-' + postid ),
spin = btn.siblings( '.spinner' );
/*
* Instead of disabling the button, which causes a focus loss and makes screen
@ -579,23 +608,37 @@
'do': 'open'
};
dfd = $.ajax({
dfd = $.ajax( {
url: ajaxurl,
type: 'post',
data: data,
beforeSend: function() {
btn.addClass( 'button-activated' );
}
}).done(function( html ) {
elem.html( html );
head.fadeOut('fast', function(){
elem.fadeIn('fast');
} ).done( function( response ) {
var errorMessage;
if ( '-1' === response ) {
errorMessage = __( 'Could not load the preview image.' );
elem.html( '<div class="notice notice-error" tabindex="-1" role="alert"><p>' + errorMessage + '</p></div>' );
}
if ( response.data && response.data.html ) {
elem.html( response.data.html );
}
head.fadeOut( 'fast', function() {
elem.fadeIn( 'fast', function() {
if ( errorMessage ) {
$( document ).trigger( 'image-editor-ui-ready' );
}
} );
btn.removeClass( 'button-activated' );
spin.removeClass( 'is-active' );
});
} );
// Initialise the Image Editor now that everything is ready.
imageEdit.init( postid );
});
} );
return dfd;
},
@ -622,9 +665,7 @@
this.initCrop(postid, img, parent);
this.setCropSelection( postid, { 'x1': 0, 'y1': 0, 'x2': 0, 'y2': 0, 'width': img.innerWidth(), 'height': img.innerHeight() } );
this.toggleEditor(postid, 0);
$( document ).trigger( 'image-editor-image-loaded' );
this.toggleEditor( postid, 0, true );
},
/**
@ -636,12 +677,19 @@
*/
focusManager: function() {
/*
* Editor is ready, move focus to the first focusable element. Since the
* DOM update is pretty large, the timeout helps browsers update their
* Editor is ready. Move focus to one of the admin alert notices displayed
* after a user action or to the first focusable element. Since the DOM
* update is pretty large, the timeout helps browsers update their
* accessibility tree to better support assistive technologies.
*/
setTimeout( function() {
$( '.imgedit-wrap' ).find( ':tabbable:first' ).focus();
var elementToSetFocusTo = $( '.notice[role="alert"]' );
if ( ! elementToSetFocusTo.length ) {
elementToSetFocusTo = $( '.imgedit-wrap' ).find( ':tabbable:first' );
}
elementToSetFocusTo.focus();
}, 100 );
},

2
wp-admin/js/image-edit.min.js vendored
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File diff suppressed because one or more lines are too long

3
wp-includes/css/media-views-rtl.css
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@ -1999,7 +1999,8 @@
display: block;
}
.media-modal .imgedit-wrap div.updated {
.media-modal .imgedit-wrap div.updated, /* Back-compat for pre-5.5 */
.media-modal .imgedit-wrap .notice {
margin: 0;
margin-bottom: 16px;
}

2
wp-includes/css/media-views-rtl.min.css vendored
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File diff suppressed because one or more lines are too long

3
wp-includes/css/media-views.css
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@ -1998,7 +1998,8 @@
display: block;
}
.media-modal .imgedit-wrap div.updated {
.media-modal .imgedit-wrap div.updated, /* Back-compat for pre-5.5 */
.media-modal .imgedit-wrap .notice {
margin: 0;
margin-bottom: 16px;
}

2
wp-includes/css/media-views.min.css vendored
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File diff suppressed because one or more lines are too long

10
wp-includes/script-loader.php
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@ -1376,14 +1376,8 @@ function wp_default_scripts( $scripts ) {
)
);
$scripts->add( 'image-edit', "/wp-admin/js/image-edit$suffix.js", array( 'jquery', 'jquery-ui-core', 'json2', 'imgareaselect' ), false, 1 );
did_action( 'init' ) && $scripts->localize(
'image-edit',
'imageEditL10n',
array(
'error' => __( 'Could not load the preview image. Please reload the page and try again.' ),
)
);
$scripts->add( 'image-edit', "/wp-admin/js/image-edit$suffix.js", array( 'jquery', 'jquery-ui-core', 'json2', 'imgareaselect', 'wp-a11y' ), false, 1 );
$scripts->set_translations( 'image-edit' );
$scripts->add( 'set-post-thumbnail', "/wp-admin/js/set-post-thumbnail$suffix.js", array( 'jquery' ), false, 1 );
did_action( 'init' ) && $scripts->localize(

2
wp-includes/version.php
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@ -13,7 +13,7 @@
*
* @global string $wp_version
*/
$wp_version = '5.5-alpha-48374';
$wp_version = '5.5-alpha-48375';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.