/**

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* @output wp-admin/js/editor.js

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*/

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window.wp = window.wp || {};

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( function( $, wp ) {

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wp.editor = wp.editor || {};

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/**

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* Utility functions for the editor.

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*

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* @since 2.5.0

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*/

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function SwitchEditors() {

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var tinymce, $$,

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exports = {};

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function init() {

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if ( ! tinymce && window.tinymce ) {

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tinymce = window.tinymce;

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$$ = tinymce.$;

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/**

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* Handles onclick events for the Visual/Text tabs.

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*

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* @since 4.3.0

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*

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* @return {void}

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*/

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$$( document ).on( 'click', function( event ) {

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var id, mode,

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target = $$( event.target );

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if ( target.hasClass( 'wp-switch-editor' ) ) {

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id = target.attr( 'data-wp-editor-id' );

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mode = target.hasClass( 'switch-tmce' ) ? 'tmce' : 'html';

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switchEditor( id, mode );

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}

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});

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}

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}

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/**

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* Returns the height of the editor toolbar(s) in px.

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*

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* @since 3.9.0

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*

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* @param {Object} editor The TinyMCE editor.

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* @return {number} If the height is between 10 and 200 return the height,

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* else return 30.

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*/

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function getToolbarHeight( editor ) {

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var node = $$( '.mce-toolbar-grp', editor.getContainer() )[0],

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height = node && node.clientHeight;

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if ( height && height > 10 && height < 200 ) {

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return parseInt( height, 10 );

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}

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return 30;

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}

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/**

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* Switches the editor between Visual and Text mode.

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*

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* @since 2.5.0

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*

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* @memberof switchEditors

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*

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* @param {string} id The id of the editor you want to change the editor mode for. Default: `content`.

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* @param {string} mode The mode you want to switch to. Default: `toggle`.

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* @return {void}

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*/

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function switchEditor( id, mode ) {

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id = id || 'content';

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mode = mode || 'toggle';

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var editorHeight, toolbarHeight, iframe,

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editor = tinymce.get( id ),

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wrap = $$( '#wp-' + id + '-wrap' ),

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$textarea = $$( '#' + id ),

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textarea = $textarea[0];

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if ( 'toggle' === mode ) {

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if ( editor && ! editor.isHidden() ) {

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mode = 'html';

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} else {

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mode = 'tmce';

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}

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}

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if ( 'tmce' === mode || 'tinymce' === mode ) {

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// If the editor is visible we are already in `tinymce` mode.

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if ( editor && ! editor.isHidden() ) {

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return false;

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}

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// Insert closing tags for any open tags in QuickTags.

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if ( typeof( window.QTags ) !== 'undefined' ) {

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window.QTags.closeAllTags( id );

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}

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editorHeight = parseInt( textarea.style.height, 10 ) || 0;

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var keepSelection = false;

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if ( editor ) {

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keepSelection = editor.getParam( 'wp_keep_scroll_position' );

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} else {

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keepSelection = window.tinyMCEPreInit.mceInit[ id ] &&

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window.tinyMCEPreInit.mceInit[ id ].wp_keep_scroll_position;

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}

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if ( keepSelection ) {

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// Save the selection.

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addHTMLBookmarkInTextAreaContent( $textarea );

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}

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if ( editor ) {

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editor.show();

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// No point to resize the iframe in iOS.

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if ( ! tinymce.Env.iOS && editorHeight ) {

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toolbarHeight = getToolbarHeight( editor );

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editorHeight = editorHeight - toolbarHeight + 14;

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// Sane limit for the editor height.

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if ( editorHeight > 50 && editorHeight < 5000 ) {

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editor.theme.resizeTo( null, editorHeight );

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}

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}

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if ( editor.getParam( 'wp_keep_scroll_position' ) ) {

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// Restore the selection.

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focusHTMLBookmarkInVisualEditor( editor );

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}

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} else {

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tinymce.init( window.tinyMCEPreInit.mceInit[ id ] );

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}

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wrap.removeClass( 'html-active' ).addClass( 'tmce-active' );

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$textarea.attr( 'aria-hidden', true );

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window.setUserSetting( 'editor', 'tinymce' );

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} else if ( 'html' === mode ) {

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// If the editor is hidden (Quicktags is shown) we don't need to switch.

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if ( editor && editor.isHidden() ) {

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return false;

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}

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if ( editor ) {

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// Don't resize the textarea in iOS.

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// The iframe is forced to 100% height there, we shouldn't match it.

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if ( ! tinymce.Env.iOS ) {

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iframe = editor.iframeElement;

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editorHeight = iframe ? parseInt( iframe.style.height, 10 ) : 0;

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if ( editorHeight ) {

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toolbarHeight = getToolbarHeight( editor );

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editorHeight = editorHeight + toolbarHeight - 14;

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// Sane limit for the textarea height.

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if ( editorHeight > 50 && editorHeight < 5000 ) {

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textarea.style.height = editorHeight + 'px';

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}

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}

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}

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var selectionRange = null;

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if ( editor.getParam( 'wp_keep_scroll_position' ) ) {

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selectionRange = findBookmarkedPosition( editor );

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}

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editor.hide();

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if ( selectionRange ) {

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selectTextInTextArea( editor, selectionRange );

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}

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} else {

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// There is probably a JS error on the page.

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// The TinyMCE editor instance doesn't exist. Show the textarea.

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$textarea.css({ 'display': '', 'visibility': '' });

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}

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wrap.removeClass( 'tmce-active' ).addClass( 'html-active' );

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$textarea.attr( 'aria-hidden', false );

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window.setUserSetting( 'editor', 'html' );

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}

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}

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/**

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* Checks if a cursor is inside an HTML tag or comment.

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*

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* In order to prevent breaking HTML tags when selecting text, the cursor

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* must be moved to either the start or end of the tag.

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*

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* This will prevent the selection marker to be inserted in the middle of an HTML tag.

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*

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* This function gives information whether the cursor is inside a tag or not, as well as

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* the tag type, if it is a closing tag and check if the HTML tag is inside a shortcode tag,

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* e.g. `[caption]<img.../>..`.

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*

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* @param {string} content The test content where the cursor is.

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* @param {number} cursorPosition The cursor position inside the content.

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*

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* @return {(null|Object)} Null if cursor is not in a tag, Object if the cursor is inside a tag.

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*/

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function getContainingTagInfo( content, cursorPosition ) {

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var lastLtPos = content.lastIndexOf( '<', cursorPosition - 1 ),

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lastGtPos = content.lastIndexOf( '>', cursorPosition );

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if ( lastLtPos > lastGtPos || content.substr( cursorPosition, 1 ) === '>' ) {

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// Find what the tag is.

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var tagContent = content.substr( lastLtPos ),

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tagMatch = tagContent.match( /<\s*(\/)?(\w+|\!-{2}.*-{2})/ );

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if ( ! tagMatch ) {

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return null;

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}

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var tagType = tagMatch[2],

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closingGt = tagContent.indexOf( '>' );

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return {

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ltPos: lastLtPos,

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gtPos: lastLtPos + closingGt + 1, // Offset by one to get the position _after_ the character.

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tagType: tagType,

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isClosingTag: !! tagMatch[1]

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};

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}

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return null;

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}

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/**

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* Checks if the cursor is inside a shortcode

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*

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* If the cursor is inside a shortcode wrapping tag, e.g. `[caption]` it's better to

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* move the selection marker to before or after the shortcode.

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*

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* For example `[caption]` rewrites/removes anything that's between the `[caption]` tag and the

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* `<img/>` tag inside.

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*

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* `[caption]<span>ThisIsGone</span><img .../>[caption]`

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*

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* Moving the selection to before or after the short code is better, since it allows to select

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* something, instead of just losing focus and going to the start of the content.

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*

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* @param {string} content The text content to check against.

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* @param {number} cursorPosition The cursor position to check.

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*

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* @return {(undefined|Object)} Undefined if the cursor is not wrapped in a shortcode tag.

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* Information about the wrapping shortcode tag if it's wrapped in one.

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*/

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function getShortcodeWrapperInfo( content, cursorPosition ) {

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var contentShortcodes = getShortCodePositionsInText( content );

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

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var element = contentShortcodes[ i ];

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if ( cursorPosition >= element.startIndex && cursorPosition <= element.endIndex ) {

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return element;

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}

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}

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}

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/**

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* Gets a list of unique shortcodes or shortcode-look-alikes in the content.

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*

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* @param {string} content The content we want to scan for shortcodes.

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*/

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function getShortcodesInText( content ) {

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var shortcodes = content.match( /\[+([\w_-])+/g ),

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result = [];

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if ( shortcodes ) {

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

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var shortcode = shortcodes[ i ].replace( /^\[+/g, '' );

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if ( result.indexOf( shortcode ) === -1 ) {

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result.push( shortcode );

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}

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}

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}

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return result;

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}

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/**

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* Gets all shortcodes and their positions in the content

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*

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* This function returns all the shortcodes that could be found in the textarea content

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* along with their character positions and boundaries.

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*

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* This is used to check if the selection cursor is inside the boundaries of a shortcode

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* and move it accordingly, to avoid breakage.

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*

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* @link adjustTextAreaSelectionCursors

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*

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* The information can also be used in other cases when we need to lookup shortcode data,

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* as it's already structured!

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*

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* @param {string} content The content we want to scan for shortcodes

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*/

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function getShortCodePositionsInText( content ) {

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var allShortcodes = getShortcodesInText( content ), shortcodeInfo;

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if ( allShortcodes.length === 0 ) {

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return [];

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}

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var shortcodeDetailsRegexp = wp.shortcode.regexp( allShortcodes.join( '|' ) ),

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shortcodeMatch, // Define local scope for the variable to be used in the loop below.

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shortcodesDetails = [];

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while ( shortcodeMatch = shortcodeDetailsRegexp.exec( content ) ) {

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/**

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* Check if the shortcode should be shown as plain text.

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*

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* This corresponds to the [[shortcode]] syntax, which doesn't parse the shortcode

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* and just shows it as text.

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*/

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var showAsPlainText = shortcodeMatch[1] === '[';

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shortcodeInfo = {

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shortcodeName: shortcodeMatch[2],

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showAsPlainText: showAsPlainText,

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startIndex: shortcodeMatch.index,

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endIndex: shortcodeMatch.index + shortcodeMatch[0].length,

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length: shortcodeMatch[0].length

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};

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shortcodesDetails.push( shortcodeInfo );

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}

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/**

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* Get all URL matches, and treat them as embeds.

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*

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* Since there isn't a good way to detect if a URL by itself on a line is a previewable

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* object, it's best to treat all of them as such.

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*

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* This means that the selection will capture the whole URL, in a similar way shrotcodes

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* are treated.

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*/

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var urlRegexp = new RegExp(

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'(^|[\\n\\r][\\n\\r]|<p>)(https?:\\/\\/[^\s"]+?)(<\\/p>\s*|[\\n\\r][\\n\\r]|$)', 'gi'

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);

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while ( shortcodeMatch = urlRegexp.exec( content ) ) {

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shortcodeInfo = {

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shortcodeName: 'url',

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showAsPlainText: false,

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startIndex: shortcodeMatch.index,

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endIndex: shortcodeMatch.index + shortcodeMatch[ 0 ].length,

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length: shortcodeMatch[ 0 ].length,

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urlAtStartOfContent: shortcodeMatch[ 1 ] === '',

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urlAtEndOfContent: shortcodeMatch[ 3 ] === ''

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};

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shortcodesDetails.push( shortcodeInfo );

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}

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return shortcodesDetails;

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}

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/**

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* Generate a cursor marker element to be inserted in the content.

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*

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* `span` seems to be the least destructive element that can be used.

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*

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* Using DomQuery syntax to create it, since it's used as both text and as a DOM element.

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*

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* @param {Object} domLib DOM library instance.

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* @param {string} content The content to insert into the cursor marker element.

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*/

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function getCursorMarkerSpan( domLib, content ) {

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return domLib( '<span>' ).css( {

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display: 'inline-block',

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width: 0,

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overflow: 'hidden',

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'line-height': 0

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} )

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.html( content ? content : '' );

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}

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/**

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* Gets adjusted selection cursor positions according to HTML tags, comments, and shortcodes.

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*

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* Shortcodes and HTML codes are a bit of a special case when selecting, since they may render

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* content in Visual mode. If we insert selection markers somewhere inside them, it's really possible

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* to break the syntax and render the HTML tag or shortcode broken.

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*

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* @link getShortcodeWrapperInfo

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*

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* @param {string} content Textarea content that the cursors are in

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* @param {{cursorStart: number, cursorEnd: number}} cursorPositions Cursor start and end positions

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*

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* @return {{cursorStart: number, cursorEnd: number}}

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*/

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function adjustTextAreaSelectionCursors( content, cursorPositions ) {

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var voidElements = [

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'area', 'base', 'br', 'col', 'embed', 'hr', 'img', 'input',

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'keygen', 'link', 'meta', 'param', 'source', 'track', 'wbr'

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];

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var cursorStart = cursorPositions.cursorStart,

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cursorEnd = cursorPositions.cursorEnd,

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// Check if the cursor is in a tag and if so, adjust it.

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isCursorStartInTag = getContainingTagInfo( content, cursorStart );

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if ( isCursorStartInTag ) {

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/**

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* Only move to the start of the HTML tag (to select the whole element) if the tag

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* is part of the voidElements list above.

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*

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* This list includes tags that are self-contained and don't need a closing tag, according to the

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* HTML5 specification.

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*

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* This is done in order to make selection of text a bit more consistent when selecting text in

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* `<p>` tags or such.

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*

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* In cases where the tag is not a void element, the cursor is put to the end of the tag,

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* so it's either between the opening and closing tag elements or after the closing tag.

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*/

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if ( voidElements.indexOf( isCursorStartInTag.tagType ) !== -1 ) {

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cursorStart = isCursorStartInTag.ltPos;

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} else {

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cursorStart = isCursorStartInTag.gtPos;

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}

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}

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var isCursorEndInTag = getContainingTagInfo( content, cursorEnd );

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if ( isCursorEndInTag ) {

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cursorEnd = isCursorEndInTag.gtPos;

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}

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var isCursorStartInShortcode = getShortcodeWrapperInfo( content, cursorStart );

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if ( isCursorStartInShortcode && ! isCursorStartInShortcode.showAsPlainText ) {

[437] Fix | Delete

/**

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* If a URL is at the start or the end of the content,

[439] Fix | Delete

* the selection doesn't work, because it inserts a marker in the text,

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* which breaks the embedURL detection.

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*

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* The best way to avoid that and not modify the user content is to

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* adjust the cursor to either after or before URL.

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*/

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if ( isCursorStartInShortcode.urlAtStartOfContent ) {

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cursorStart = isCursorStartInShortcode.endIndex;

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} else {

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cursorStart = isCursorStartInShortcode.startIndex;

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}

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}

[451] Fix | Delete

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var isCursorEndInShortcode = getShortcodeWrapperInfo( content, cursorEnd );

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if ( isCursorEndInShortcode && ! isCursorEndInShortcode.showAsPlainText ) {

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if ( isCursorEndInShortcode.urlAtEndOfContent ) {

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cursorEnd = isCursorEndInShortcode.startIndex;

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} else {

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cursorEnd = isCursorEndInShortcode.endIndex;

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}

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}

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return {

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cursorStart: cursorStart,

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cursorEnd: cursorEnd

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};

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}

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[467] Fix | Delete

/**

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* Adds text selection markers in the editor textarea.

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*

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* Adds selection markers in the content of the editor `textarea`.

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* The method directly manipulates the `textarea` content, to allow TinyMCE plugins

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* to run after the markers are added.

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*

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* @param {Object} $textarea TinyMCE's textarea wrapped as a DomQuery object

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*/

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function addHTMLBookmarkInTextAreaContent( $textarea ) {

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if ( ! $textarea || ! $textarea.length ) {

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// If no valid $textarea object is provided, there's nothing we can do.

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return;

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}

[481] Fix | Delete

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var textArea = $textarea[0],

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textAreaContent = textArea.value,

[484] Fix | Delete

[485] Fix | Delete

adjustedCursorPositions = adjustTextAreaSelectionCursors( textAreaContent, {

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cursorStart: textArea.selectionStart,

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cursorEnd: textArea.selectionEnd

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} ),

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htmlModeCursorStartPosition = adjustedCursorPositions.cursorStart,

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htmlModeCursorEndPosition = adjustedCursorPositions.cursorEnd,

[492] Fix | Delete

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mode = htmlModeCursorStartPosition !== htmlModeCursorEndPosition ? 'range' : 'single',

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[495] Fix | Delete

selectedText = null,

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cursorMarkerSkeleton = getCursorMarkerSpan( $$, '&#65279;' ).attr( 'data-mce-type','bookmark' );

[497] Fix | Delete

[498] Fix | Delete

if ( mode === 'range' ) {

[499] Fix | Delete