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Follow-up to [50001], [50270], [50367], [50383], [50410], [50420], [50429]. Props Clorith. See #51812. Built from https://develop.svn.wordpress.org/trunk@50547 git-svn-id: http://core.svn.wordpress.org/trunk@50160 1a063a9b-81f0-0310-95a4-ce76da25c4cd
441 lines
11 KiB
JavaScript
441 lines
11 KiB
JavaScript
/**
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* @output wp-admin/js/tags-box.js
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*/
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/* jshint curly: false, eqeqeq: false */
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/* global ajaxurl, tagBox, array_unique_noempty */
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( function( $ ) {
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var tagDelimiter = wp.i18n._x( ',', 'tag delimiter' ) || ',';
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/**
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* Filters unique items and returns a new array.
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*
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* Filters all items from an array into a new array containing only the unique
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* items. This also excludes whitespace or empty values.
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*
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* @since 2.8.0
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*
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* @global
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*
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* @param {Array} array The array to filter through.
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*
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* @return {Array} A new array containing only the unique items.
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*/
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window.array_unique_noempty = function( array ) {
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var out = [];
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// Trim the values and ensure they are unique.
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$.each( array, function( key, val ) {
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val = val || '';
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val = val.trim();
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if ( val && $.inArray( val, out ) === -1 ) {
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out.push( val );
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}
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} );
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return out;
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};
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/**
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* The TagBox object.
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*
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* Contains functions to create and manage tags that can be associated with a
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* post.
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*
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* @since 2.9.0
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*
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* @global
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*/
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window.tagBox = {
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/**
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* Cleans up tags by removing redundant characters.
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*
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* @since 2.9.0
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*
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* @memberOf tagBox
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*
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* @param {string} tags Comma separated tags that need to be cleaned up.
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*
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* @return {string} The cleaned up tags.
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*/
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clean : function( tags ) {
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if ( ',' !== tagDelimiter ) {
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tags = tags.replace( new RegExp( tagDelimiter, 'g' ), ',' );
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}
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tags = tags.replace(/\s*,\s*/g, ',').replace(/,+/g, ',').replace(/[,\s]+$/, '').replace(/^[,\s]+/, '');
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if ( ',' !== tagDelimiter ) {
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tags = tags.replace( /,/g, tagDelimiter );
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}
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return tags;
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},
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/**
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* Parses tags and makes them editable.
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*
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* @since 2.9.0
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*
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* @memberOf tagBox
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*
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* @param {Object} el The tag element to retrieve the ID from.
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*
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* @return {boolean} Always returns false.
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*/
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parseTags : function(el) {
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var id = el.id,
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num = id.split('-check-num-')[1],
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taxbox = $(el).closest('.tagsdiv'),
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thetags = taxbox.find('.the-tags'),
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current_tags = thetags.val().split( tagDelimiter ),
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new_tags = [];
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delete current_tags[num];
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// Sanitize the current tags and push them as if they're new tags.
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$.each( current_tags, function( key, val ) {
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val = val || '';
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val = val.trim();
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if ( val ) {
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new_tags.push( val );
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}
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});
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thetags.val( this.clean( new_tags.join( tagDelimiter ) ) );
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this.quickClicks( taxbox );
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return false;
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},
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/**
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* Creates clickable links, buttons and fields for adding or editing tags.
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*
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* @since 2.9.0
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*
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* @memberOf tagBox
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*
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* @param {Object} el The container HTML element.
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*
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* @return {void}
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*/
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quickClicks : function( el ) {
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var thetags = $('.the-tags', el),
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tagchecklist = $('.tagchecklist', el),
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id = $(el).attr('id'),
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current_tags, disabled;
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if ( ! thetags.length )
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return;
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disabled = thetags.prop('disabled');
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current_tags = thetags.val().split( tagDelimiter );
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tagchecklist.empty();
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/**
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* Creates a delete button if tag editing is enabled, before adding it to the tag list.
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*
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* @since 2.5.0
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*
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* @memberOf tagBox
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*
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* @param {string} key The index of the current tag.
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* @param {string} val The value of the current tag.
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*
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* @return {void}
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*/
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$.each( current_tags, function( key, val ) {
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var listItem, xbutton;
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val = val || '';
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val = val.trim();
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if ( ! val )
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return;
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// Create a new list item, and ensure the text is properly escaped.
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listItem = $( '<li />' ).text( val );
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// If tags editing isn't disabled, create the X button.
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if ( ! disabled ) {
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/*
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* Build the X buttons, hide the X icon with aria-hidden and
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* use visually hidden text for screen readers.
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*/
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xbutton = $( '<button type="button" id="' + id + '-check-num-' + key + '" class="ntdelbutton">' +
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'<span class="remove-tag-icon" aria-hidden="true"></span>' +
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'<span class="screen-reader-text">' + wp.i18n.__( 'Remove term:' ) + ' ' + listItem.html() + '</span>' +
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'</button>' );
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/**
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* Handles the click and keypress event of the tag remove button.
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*
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* Makes sure the focus ends up in the tag input field when using
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* the keyboard to delete the tag.
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*
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* @since 4.2.0
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*
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* @param {Event} e The click or keypress event to handle.
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*
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* @return {void}
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*/
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xbutton.on( 'click keypress', function( e ) {
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// On click or when using the Enter/Spacebar keys.
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if ( 'click' === e.type || 13 === e.keyCode || 32 === e.keyCode ) {
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/*
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* When using the keyboard, move focus back to the
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* add new tag field. Note: when releasing the pressed
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* key this will fire the `keyup` event on the input.
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*/
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if ( 13 === e.keyCode || 32 === e.keyCode ) {
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$( this ).closest( '.tagsdiv' ).find( 'input.newtag' ).trigger( 'focus' );
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}
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tagBox.userAction = 'remove';
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tagBox.parseTags( this );
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}
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});
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listItem.prepend( ' ' ).prepend( xbutton );
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}
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// Append the list item to the tag list.
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tagchecklist.append( listItem );
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});
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// The buttons list is built now, give feedback to screen reader users.
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tagBox.screenReadersMessage();
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},
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/**
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* Adds a new tag.
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*
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* Also ensures that the quick links are properly generated.
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*
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* @since 2.9.0
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*
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* @memberOf tagBox
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*
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* @param {Object} el The container HTML element.
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* @param {Object|boolean} a When this is an HTML element the text of that
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* element will be used for the new tag.
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* @param {number|boolean} f If this value is not passed then the tag input
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* field is focused.
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*
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* @return {boolean} Always returns false.
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*/
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flushTags : function( el, a, f ) {
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var tagsval, newtags, text,
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tags = $( '.the-tags', el ),
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newtag = $( 'input.newtag', el );
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a = a || false;
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text = a ? $(a).text() : newtag.val();
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/*
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* Return if there's no new tag or if the input field is empty.
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* Note: when using the keyboard to add tags, focus is moved back to
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* the input field and the `keyup` event attached on this field will
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* fire when releasing the pressed key. Checking also for the field
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* emptiness avoids to set the tags and call quickClicks() again.
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*/
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if ( 'undefined' == typeof( text ) || '' === text ) {
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return false;
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}
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tagsval = tags.val();
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newtags = tagsval ? tagsval + tagDelimiter + text : text;
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newtags = this.clean( newtags );
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newtags = array_unique_noempty( newtags.split( tagDelimiter ) ).join( tagDelimiter );
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tags.val( newtags );
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this.quickClicks( el );
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if ( ! a )
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newtag.val('');
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if ( 'undefined' == typeof( f ) )
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newtag.trigger( 'focus' );
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return false;
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},
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/**
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* Retrieves the available tags and creates a tagcloud.
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*
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* Retrieves the available tags from the database and creates an interactive
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* tagcloud. Clicking a tag will add it.
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*
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* @since 2.9.0
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*
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* @memberOf tagBox
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*
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* @param {string} id The ID to extract the taxonomy from.
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*
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* @return {void}
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*/
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get : function( id ) {
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var tax = id.substr( id.indexOf('-') + 1 );
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/**
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* Puts a received tag cloud into a DOM element.
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*
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* The tag cloud HTML is generated on the server.
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*
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* @since 2.9.0
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*
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* @param {number|string} r The response message from the Ajax call.
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* @param {string} stat The status of the Ajax request.
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*
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* @return {void}
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*/
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$.post( ajaxurl, { 'action': 'get-tagcloud', 'tax': tax }, function( r, stat ) {
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if ( 0 === r || 'success' != stat ) {
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return;
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}
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r = $( '<div id="tagcloud-' + tax + '" class="the-tagcloud">' + r + '</div>' );
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/**
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* Adds a new tag when a tag in the tagcloud is clicked.
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*
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* @since 2.9.0
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*
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* @return {boolean} Returns false to prevent the default action.
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*/
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$( 'a', r ).on( 'click', function() {
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tagBox.userAction = 'add';
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tagBox.flushTags( $( '#' + tax ), this );
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return false;
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});
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$( '#' + id ).after( r );
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});
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},
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/**
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* Track the user's last action.
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*
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* @since 4.7.0
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*/
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userAction: '',
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/**
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* Dispatches an audible message to screen readers.
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*
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* This will inform the user when a tag has been added or removed.
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*
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* @since 4.7.0
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*
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* @return {void}
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*/
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screenReadersMessage: function() {
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var message;
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switch ( this.userAction ) {
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case 'remove':
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message = wp.i18n.__( 'Term removed.' );
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break;
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case 'add':
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message = wp.i18n.__( 'Term added.' );
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break;
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default:
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return;
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}
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window.wp.a11y.speak( message, 'assertive' );
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},
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/**
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* Initializes the tags box by setting up the links, buttons. Sets up event
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* handling.
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*
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* This includes handling of pressing the enter key in the input field and the
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* retrieval of tag suggestions.
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*
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* @since 2.9.0
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*
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* @memberOf tagBox
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*
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* @return {void}
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*/
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init : function() {
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var ajaxtag = $('div.ajaxtag');
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$('.tagsdiv').each( function() {
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tagBox.quickClicks( this );
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});
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$( '.tagadd', ajaxtag ).on( 'click', function() {
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tagBox.userAction = 'add';
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tagBox.flushTags( $( this ).closest( '.tagsdiv' ) );
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});
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/**
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* Handles pressing enter on the new tag input field.
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*
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* Prevents submitting the post edit form. Uses `keypress` to take
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* into account Input Method Editor (IME) converters.
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*
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* @since 2.9.0
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*
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* @param {Event} event The keypress event that occurred.
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*
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* @return {void}
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*/
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$( 'input.newtag', ajaxtag ).on( 'keypress', function( event ) {
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if ( 13 == event.which ) {
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tagBox.userAction = 'add';
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tagBox.flushTags( $( this ).closest( '.tagsdiv' ) );
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event.preventDefault();
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event.stopPropagation();
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}
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}).each( function( i, element ) {
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$( element ).wpTagsSuggest();
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});
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/**
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* Before a post is saved the value currently in the new tag input field will be
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* added as a tag.
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*
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* @since 2.9.0
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*
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* @return {void}
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*/
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$('#post').on( 'submit', function(){
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$('div.tagsdiv').each( function() {
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tagBox.flushTags(this, false, 1);
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});
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});
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/**
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* Handles clicking on the tag cloud link.
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*
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* Makes sure the ARIA attributes are set correctly.
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*
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* @since 2.9.0
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*
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* @return {void}
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*/
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$('.tagcloud-link').on( 'click', function(){
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// On the first click, fetch the tag cloud and insert it in the DOM.
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tagBox.get( $( this ).attr( 'id' ) );
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// Update button state, remove previous click event and attach a new one to toggle the cloud.
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$( this )
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.attr( 'aria-expanded', 'true' )
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.off()
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.on( 'click', function() {
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$( this )
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.attr( 'aria-expanded', 'false' === $( this ).attr( 'aria-expanded' ) ? 'true' : 'false' )
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.siblings( '.the-tagcloud' ).toggle();
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});
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});
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}
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};
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}( jQuery ));
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