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