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349 lines
8.6 KiB
349 lines
8.6 KiB
/**
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* Text pattern plugin for TinyMCE
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*
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* @since 4.3.0
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*
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* This plugin can automatically format text patterns as you type. It includes several groups of patterns.
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*
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* Start of line patterns:
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* As-you-type:
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* - Unordered list (`* ` and `- `).
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* - Ordered list (`1. ` and `1) `).
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*
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* On enter:
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* - h2 (## ).
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* - h3 (### ).
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* - h4 (#### ).
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* - h5 (##### ).
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* - h6 (###### ).
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* - blockquote (> ).
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* - hr (---).
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*
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* Inline patterns:
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* - <code> (`) (backtick).
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*
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* If the transformation in unwanted, the user can undo the change by pressing backspace,
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* using the undo shortcut, or the undo button in the toolbar.
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*
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* Setting for the patterns can be overridden by plugins by using the `tiny_mce_before_init` PHP filter.
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* The setting name is `wptextpattern` and the value is an object containing override arrays for each
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* patterns group. There are three groups: "space", "enter", and "inline". Example (PHP):
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*
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* add_filter( 'tiny_mce_before_init', 'my_mce_init_wptextpattern' );
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* function my_mce_init_wptextpattern( $init ) {
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* $init['wptextpattern'] = wp_json_encode( array(
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* 'inline' => array(
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* array( 'delimiter' => '**', 'format' => 'bold' ),
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* array( 'delimiter' => '__', 'format' => 'italic' ),
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* ),
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* ) );
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*
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* return $init;
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* }
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*
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* Note that setting this will override the default text patterns. You will need to include them
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* in your settings array if you want to keep them working.
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*/
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( function( tinymce, setTimeout ) {
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if ( tinymce.Env.ie && tinymce.Env.ie < 9 ) {
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return;
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}
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/**
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* Escapes characters for use in a Regular Expression.
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*
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* @param {String} string Characters to escape
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*
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* @return {String} Escaped characters
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*/
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function escapeRegExp( string ) {
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return string.replace( /[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, '\\$&' );
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}
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tinymce.PluginManager.add( 'wptextpattern', function( editor ) {
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var VK = tinymce.util.VK;
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var settings = editor.settings.wptextpattern || {};
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var spacePatterns = settings.space || [
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{ regExp: /^[*-]\s/, cmd: 'InsertUnorderedList' },
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{ regExp: /^1[.)]\s/, cmd: 'InsertOrderedList' }
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];
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var enterPatterns = settings.enter || [
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{ start: '##', format: 'h2' },
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{ start: '###', format: 'h3' },
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{ start: '####', format: 'h4' },
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{ start: '#####', format: 'h5' },
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{ start: '######', format: 'h6' },
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{ start: '>', format: 'blockquote' },
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{ regExp: /^(-){3,}$/, element: 'hr' }
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];
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var inlinePatterns = settings.inline || [
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{ delimiter: '`', format: 'code' }
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];
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var canUndo;
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editor.on( 'selectionchange', function() {
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canUndo = null;
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} );
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editor.on( 'keydown', function( event ) {
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if ( ( canUndo && event.keyCode === 27 /* ESCAPE */ ) || ( canUndo === 'space' && event.keyCode === VK.BACKSPACE ) ) {
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editor.undoManager.undo();
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event.preventDefault();
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event.stopImmediatePropagation();
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}
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if ( VK.metaKeyPressed( event ) ) {
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return;
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}
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if ( event.keyCode === VK.ENTER ) {
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enter();
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// Wait for the browser to insert the character.
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} else if ( event.keyCode === VK.SPACEBAR ) {
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setTimeout( space );
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} else if ( event.keyCode > 47 && ! ( event.keyCode >= 91 && event.keyCode <= 93 ) ) {
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setTimeout( inline );
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}
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}, true );
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function inline() {
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var rng = editor.selection.getRng();
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var node = rng.startContainer;
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var offset = rng.startOffset;
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var startOffset;
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var endOffset;
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var pattern;
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var format;
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var zero;
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// We need a non-empty text node with an offset greater than zero.
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if ( ! node || node.nodeType !== 3 || ! node.data.length || ! offset ) {
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return;
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}
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var string = node.data.slice( 0, offset );
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var lastChar = node.data.charAt( offset - 1 );
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tinymce.each( inlinePatterns, function( p ) {
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// Character before selection should be delimiter.
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if ( lastChar !== p.delimiter.slice( -1 ) ) {
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return;
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}
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var escDelimiter = escapeRegExp( p.delimiter );
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var delimiterFirstChar = p.delimiter.charAt( 0 );
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var regExp = new RegExp( '(.*)' + escDelimiter + '.+' + escDelimiter + '$' );
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var match = string.match( regExp );
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if ( ! match ) {
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return;
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}
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startOffset = match[1].length;
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endOffset = offset - p.delimiter.length;
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var before = string.charAt( startOffset - 1 );
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var after = string.charAt( startOffset + p.delimiter.length );
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// test*test* => format applied.
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// test *test* => applied.
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// test* test* => not applied.
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if ( startOffset && /\S/.test( before ) ) {
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if ( /\s/.test( after ) || before === delimiterFirstChar ) {
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return;
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}
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}
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// Do not replace when only whitespace and delimiter characters.
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if ( ( new RegExp( '^[\\s' + escapeRegExp( delimiterFirstChar ) + ']+$' ) ).test( string.slice( startOffset, endOffset ) ) ) {
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return;
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}
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pattern = p;
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return false;
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} );
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if ( ! pattern ) {
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return;
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}
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format = editor.formatter.get( pattern.format );
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if ( format && format[0].inline ) {
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editor.undoManager.add();
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editor.undoManager.transact( function() {
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node.insertData( offset, '\uFEFF' );
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node = node.splitText( startOffset );
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zero = node.splitText( offset - startOffset );
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node.deleteData( 0, pattern.delimiter.length );
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node.deleteData( node.data.length - pattern.delimiter.length, pattern.delimiter.length );
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editor.formatter.apply( pattern.format, {}, node );
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editor.selection.setCursorLocation( zero, 1 );
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} );
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// We need to wait for native events to be triggered.
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setTimeout( function() {
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canUndo = 'space';
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editor.once( 'selectionchange', function() {
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var offset;
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if ( zero ) {
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offset = zero.data.indexOf( '\uFEFF' );
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if ( offset !== -1 ) {
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zero.deleteData( offset, offset + 1 );
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}
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}
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} );
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} );
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}
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}
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function firstTextNode( node ) {
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var parent = editor.dom.getParent( node, 'p' ),
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child;
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if ( ! parent ) {
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return;
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}
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while ( child = parent.firstChild ) {
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if ( child.nodeType !== 3 ) {
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parent = child;
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} else {
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break;
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}
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}
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if ( ! child ) {
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return;
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}
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if ( ! child.data ) {
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if ( child.nextSibling && child.nextSibling.nodeType === 3 ) {
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child = child.nextSibling;
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} else {
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child = null;
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}
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}
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return child;
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}
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function space() {
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var rng = editor.selection.getRng(),
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node = rng.startContainer,
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parent,
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text;
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if ( ! node || firstTextNode( node ) !== node ) {
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return;
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}
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parent = node.parentNode;
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text = node.data;
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tinymce.each( spacePatterns, function( pattern ) {
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var match = text.match( pattern.regExp );
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if ( ! match || rng.startOffset !== match[0].length ) {
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return;
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}
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editor.undoManager.add();
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editor.undoManager.transact( function() {
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node.deleteData( 0, match[0].length );
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if ( ! parent.innerHTML ) {
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parent.appendChild( document.createElement( 'br' ) );
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}
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editor.selection.setCursorLocation( parent );
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editor.execCommand( pattern.cmd );
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} );
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// We need to wait for native events to be triggered.
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setTimeout( function() {
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canUndo = 'space';
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} );
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return false;
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} );
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}
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function enter() {
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var rng = editor.selection.getRng(),
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start = rng.startContainer,
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node = firstTextNode( start ),
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i = enterPatterns.length,
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text, pattern, parent;
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if ( ! node ) {
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return;
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}
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text = node.data;
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while ( i-- ) {
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if ( enterPatterns[ i ].start ) {
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if ( text.indexOf( enterPatterns[ i ].start ) === 0 ) {
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pattern = enterPatterns[ i ];
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break;
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}
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} else if ( enterPatterns[ i ].regExp ) {
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if ( enterPatterns[ i ].regExp.test( text ) ) {
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pattern = enterPatterns[ i ];
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break;
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}
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}
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}
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if ( ! pattern ) {
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return;
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}
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if ( node === start && tinymce.trim( text ) === pattern.start ) {
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return;
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}
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editor.once( 'keyup', function() {
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editor.undoManager.add();
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editor.undoManager.transact( function() {
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if ( pattern.format ) {
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editor.formatter.apply( pattern.format, {}, node );
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node.replaceData( 0, node.data.length, ltrim( node.data.slice( pattern.start.length ) ) );
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} else if ( pattern.element ) {
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parent = node.parentNode && node.parentNode.parentNode;
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if ( parent ) {
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parent.replaceChild( document.createElement( pattern.element ), node.parentNode );
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}
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}
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} );
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// We need to wait for native events to be triggered.
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setTimeout( function() {
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canUndo = 'enter';
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} );
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} );
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}
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function ltrim( text ) {
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return text ? text.replace( /^\s+/, '' ) : '';
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}
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} );
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} )( window.tinymce, window.setTimeout );
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