Prosellers Shell V2.0

Editing: plugin.js

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/* global tinymce */
tinymce.PluginManager.add( 'wpeditimage', function( editor ) {
	var toolbar, serializer, touchOnImage, pasteInCaption,
		each = tinymce.each,
		trim = tinymce.trim,
		iOS = tinymce.Env.iOS;

function isPlaceholder( node ) {
		return !! ( editor.dom.getAttrib( node, 'data-mce-placeholder' ) || editor.dom.getAttrib( node, 'data-mce-object' ) );
	}

editor.addButton( 'wp_img_remove', {
		tooltip: 'Remove',
		icon: 'dashicon dashicons-no',
		onclick: function() {
			removeImage( editor.selection.getNode() );
		}
	} );

editor.addButton( 'wp_img_edit', {
		tooltip: 'Edit|button', // '|button' is not displayed, only used for context.
		icon: 'dashicon dashicons-edit',
		onclick: function() {
			editImage( editor.selection.getNode() );
		}
	} );

each( {
		alignleft: 'Align left',
		aligncenter: 'Align center',
		alignright: 'Align right',
		alignnone: 'No alignment'
	}, function( tooltip, name ) {
		var direction = name.slice( 5 );

editor.addButton( 'wp_img_' + name, {
			tooltip: tooltip,
			icon: 'dashicon dashicons-align-' + direction,
			cmd: 'alignnone' === name ? 'wpAlignNone' : 'Justify' + direction.slice( 0, 1 ).toUpperCase() + direction.slice( 1 ),
			onPostRender: function() {
				var self = this;

editor.on( 'NodeChange', function( event ) {
					var node;

// Don't bother.
					if ( event.element.nodeName !== 'IMG' ) {
						return;
					}

node = editor.dom.getParent( event.element, '.wp-caption' ) || event.element;

if ( 'alignnone' === name ) {
						self.active( ! /\balign(left|center|right)\b/.test( node.className ) );
					} else {
						self.active( editor.dom.hasClass( node, name ) );
					}
				} );
			}
		} );
	} );

editor.once( 'preinit', function() {
		if ( editor.wp && editor.wp._createToolbar ) {
			toolbar = editor.wp._createToolbar( [
				'wp_img_alignleft',
				'wp_img_aligncenter',
				'wp_img_alignright',
				'wp_img_alignnone',
				'wp_img_edit',
				'wp_img_remove'
			] );
		}
	} );

editor.on( 'wptoolbar', function( event ) {
		if ( event.element.nodeName === 'IMG' && ! isPlaceholder( event.element ) ) {
			event.toolbar = toolbar;
		}
	} );

function isNonEditable( node ) {
		var parent = editor.$( node ).parents( '[contenteditable]' );
		return parent && parent.attr( 'contenteditable' ) === 'false';
	}

// Safari on iOS fails to select images in contentEditoble mode on touch.
	// Select them again.
	if ( iOS ) {
		editor.on( 'init', function() {
			editor.on( 'touchstart', function( event ) {
				if ( event.target.nodeName === 'IMG' && ! isNonEditable( event.target ) ) {
					touchOnImage = true;
				}
			});

editor.dom.bind( editor.getDoc(), 'touchmove', function() {
				touchOnImage = false;
			});

editor.on( 'touchend', function( event ) {
				if ( touchOnImage && event.target.nodeName === 'IMG' && ! isNonEditable( event.target ) ) {
					var node = event.target;

touchOnImage = false;

window.setTimeout( function() {
						editor.selection.select( node );
						editor.nodeChanged();
					}, 100 );
				} else if ( toolbar ) {
					toolbar.hide();
				}
			});
		});
	}

function parseShortcode( content ) {
		return content.replace( /(?:<p>)?\[(?:wp_)?caption([^\]]+)\]([\s\S]+?)\[\/(?:wp_)?caption\](?:<\/p>)?/g, function( a, b, c ) {
			var id, align, classes, caption, img, width;

id = b.match( /id=['"]([^'"]*)['"] ?/ );
			if ( id ) {
				b = b.replace( id[0], '' );
			}

align = b.match( /align=['"]([^'"]*)['"] ?/ );
			if ( align ) {
				b = b.replace( align[0], '' );
			}

classes = b.match( /class=['"]([^'"]*)['"] ?/ );
			if ( classes ) {
				b = b.replace( classes[0], '' );
			}

width = b.match( /width=['"]([0-9]*)['"] ?/ );
			if ( width ) {
				b = b.replace( width[0], '' );
			}

c = trim( c );
			img = c.match( /((?:<a [^>]+>)?<img [^>]+>(?:<\/a>)?)([\s\S]*)/i );

if ( img && img[2] ) {
				caption = trim( img[2] );
				img = trim( img[1] );
			} else {
				// Old captions shortcode style.
				caption = trim( b ).replace( /caption=['"]/, '' ).replace( /['"]$/, '' );
				img = c;
			}

id = ( id && id[1] ) ? id[1].replace( /[<>&]+/g,  '' ) : '';
			align = ( align && align[1] ) ? align[1] : 'alignnone';
			classes = ( classes && classes[1] ) ? ' ' + classes[1].replace( /[<>&]+/g,  '' ) : '';

if ( ! width && img ) {
				width = img.match( /width=['"]([0-9]*)['"]/ );
			}

if ( width && width[1] ) {
				width = width[1];
			}

if ( ! width || ! caption ) {
				return c;
			}

width = parseInt( width, 10 );
			if ( ! editor.getParam( 'wpeditimage_html5_captions' ) ) {
				width += 10;
			}

return '<div class="mceTemp"><dl id="' + id + '" class="wp-caption ' + align + classes + '" style="width: ' + width + 'px">' +
				'<dt class="wp-caption-dt">'+ img +'</dt><dd class="wp-caption-dd">'+ caption +'</dd></dl></div>';
		});
	}

function getShortcode( content ) {
		return content.replace( /(?:<div [^>]+mceTemp[^>]+>)?\s*(<dl [^>]+wp-caption[^>]+>[\s\S]+?<\/dl>)\s*(?:<\/div>)?/g, function( all, dl ) {
			var out = '';

if ( dl.indexOf('<img ') === -1 || dl.indexOf('</p>') !== -1 ) {
				// Broken caption. The user managed to drag the image out or type in the wrapper div?
				// Remove the <dl>, <dd> and <dt> and return the remaining text.
				return dl.replace( /<d[ldt]( [^>]+)?>/g, '' ).replace( /<\/d[ldt]>/g, '' );
			}

out = dl.replace( /\s*<dl ([^>]+)>\s*<dt [^>]+>([\s\S]+?)<\/dt>\s*<dd [^>]+>([\s\S]*?)<\/dd>\s*<\/dl>\s*/gi, function( a, b, c, caption ) {
				var id, classes, align, width;

width = c.match( /width="([0-9]*)"/ );
				width = ( width && width[1] ) ? width[1] : '';

classes = b.match( /class="([^"]*)"/ );
				classes = ( classes && classes[1] ) ? classes[1] : '';
				align = classes.match( /align[a-z]+/i ) || 'alignnone';

if ( ! width || ! caption ) {
					if ( 'alignnone' !== align[0] ) {
						c = c.replace( /><img/, ' class="' + align[0] + '"><img' );
					}
					return c;
				}

id = b.match( /id="([^"]*)"/ );
				id = ( id && id[1] ) ? id[1] : '';

classes = classes.replace( /wp-caption ?|align[a-z]+ ?/gi, '' );

if ( classes ) {
					classes = ' class="' + classes + '"';
				}

caption = caption.replace( /\r\n|\r/g, '\n' ).replace( /<[a-zA-Z0-9]+( [^<>]+)?>/g, function( a ) {
					// No line breaks inside HTML tags.
					return a.replace( /[\r\n\t]+/, ' ' );
				});

// Convert remaining line breaks to <br>.
				caption = caption.replace( /\s*\n\s*/g, '<br />' );

return '[caption id="' + id + '" align="' + align + '" width="' + width + '"' + classes + ']' + c + ' ' + caption + '[/caption]';
			});

if ( out.indexOf('[caption') === -1 ) {
				// The caption html seems broken, try to find the image that may be wrapped in a link
				// and may be followed by <p> with the caption text.
				out = dl.replace( /[\s\S]*?((?:<a [^>]+>)?<img [^>]+>(?:<\/a>)?)(<p>[\s\S]*<\/p>)?[\s\S]*/gi, '<p>$1</p>$2' );
			}

return out;
		});
	}

function extractImageData( imageNode ) {
		var classes, extraClasses, metadata, captionBlock, caption, link, width, height,
			captionClassName = [],
			dom = editor.dom,
			isIntRegExp = /^\d+$/;

// Default attributes.
		metadata = {
			attachment_id: false,
			size: 'custom',
			caption: '',
			align: 'none',
			extraClasses: '',
			link: false,
			linkUrl: '',
			linkClassName: '',
			linkTargetBlank: false,
			linkRel: '',
			title: ''
		};

metadata.url = dom.getAttrib( imageNode, 'src' );
		metadata.alt = dom.getAttrib( imageNode, 'alt' );
		metadata.title = dom.getAttrib( imageNode, 'title' );

width = dom.getAttrib( imageNode, 'width' );
		height = dom.getAttrib( imageNode, 'height' );

if ( ! isIntRegExp.test( width ) || parseInt( width, 10 ) < 1 ) {
			width = imageNode.naturalWidth || imageNode.width;
		}

if ( ! isIntRegExp.test( height ) || parseInt( height, 10 ) < 1 ) {
			height = imageNode.naturalHeight || imageNode.height;
		}

metadata.customWidth = metadata.width = width;
		metadata.customHeight = metadata.height = height;

classes = tinymce.explode( imageNode.className, ' ' );
		extraClasses = [];

tinymce.each( classes, function( name ) {

if ( /^wp-image/.test( name ) ) {
				metadata.attachment_id = parseInt( name.replace( 'wp-image-', '' ), 10 );
			} else if ( /^align/.test( name ) ) {
				metadata.align = name.replace( 'align', '' );
			} else if ( /^size/.test( name ) ) {
				metadata.size = name.replace( 'size-', '' );
			} else {
				extraClasses.push( name );
			}

} );

metadata.extraClasses = extraClasses.join( ' ' );

// Extract caption.
		captionBlock = dom.getParents( imageNode, '.wp-caption' );

if ( captionBlock.length ) {
			captionBlock = captionBlock[0];

classes = captionBlock.className.split( ' ' );
			tinymce.each( classes, function( name ) {
				if ( /^align/.test( name ) ) {
					metadata.align = name.replace( 'align', '' );
				} else if ( name && name !== 'wp-caption' ) {
					captionClassName.push( name );
				}
			} );

metadata.captionClassName = captionClassName.join( ' ' );

caption = dom.select( 'dd.wp-caption-dd', captionBlock );
			if ( caption.length ) {
				caption = caption[0];

metadata.caption = editor.serializer.serialize( caption )
					.replace( /<br[^>]*>/g, '$&\n' ).replace( /^<p>/, '' ).replace( /<\/p>$/, '' );
			}
		}

// Extract linkTo.
		if ( imageNode.parentNode && imageNode.parentNode.nodeName === 'A' ) {
			link = imageNode.parentNode;
			metadata.linkUrl = dom.getAttrib( link, 'href' );
			metadata.linkTargetBlank = dom.getAttrib( link, 'target' ) === '_blank' ? true : false;
			metadata.linkRel = dom.getAttrib( link, 'rel' );
			metadata.linkClassName = link.className;
		}

return metadata;
	}

function hasTextContent( node ) {
		return node && !! ( node.textContent || node.innerText ).replace( /\ufeff/g, '' );
	}

// Verify HTML in captions.
	function verifyHTML( caption ) {
		if ( ! caption || ( caption.indexOf( '<' ) === -1 && caption.indexOf( '>' ) === -1 ) ) {
			return caption;
		}

if ( ! serializer ) {
			serializer = new tinymce.html.Serializer( {}, editor.schema );
		}

return serializer.serialize( editor.parser.parse( caption, { forced_root_block: false } ) );
	}

function updateImage( $imageNode, imageData ) {
		var classes, className, node, html, parent, wrap, linkNode, imageNode,
			captionNode, dd, dl, id, attrs, linkAttrs, width, height, align,
			$imageNode, srcset, src,
			dom = editor.dom;

if ( ! $imageNode || ! $imageNode.length ) {
			return;
		}

imageNode = $imageNode[0];
		classes = tinymce.explode( imageData.extraClasses, ' ' );

if ( ! classes ) {
			classes = [];
		}

if ( ! imageData.caption ) {
			classes.push( 'align' + imageData.align );
		}

if ( imageData.attachment_id ) {
			classes.push( 'wp-image-' + imageData.attachment_id );
			if ( imageData.size && imageData.size !== 'custom' ) {
				classes.push( 'size-' + imageData.size );
			}
		}

width = imageData.width;
		height = imageData.height;

if ( imageData.size === 'custom' ) {
			width = imageData.customWidth;
			height = imageData.customHeight;
		}

attrs = {
			src: imageData.url,
			width: width || null,
			height: height || null,
			title: imageData.title || null,
			'class': classes.join( ' ' ) || null
		};

dom.setAttribs( imageNode, attrs );

// Preserve empty alt attributes.
		$imageNode.attr( 'alt', imageData.alt || '' );

linkAttrs = {
			href: imageData.linkUrl,
			rel: imageData.linkRel || null,
			target: imageData.linkTargetBlank ? '_blank': null,
			'class': imageData.linkClassName || null
		};

if ( imageNode.parentNode && imageNode.parentNode.nodeName === 'A' && ! hasTextContent( imageNode.parentNode ) ) {
			// Update or remove an existing link wrapped around the image.
			if ( imageData.linkUrl ) {
				dom.setAttribs( imageNode.parentNode, linkAttrs );
			} else {
				dom.remove( imageNode.parentNode, true );
			}
		} else if ( imageData.linkUrl ) {
			if ( linkNode = dom.getParent( imageNode, 'a' ) ) {
				// The image is inside a link together with other nodes,
				// or is nested in another node, move it out.
				dom.insertAfter( imageNode, linkNode );
			}

// Add link wrapped around the image.
			linkNode = dom.create( 'a', linkAttrs );
			imageNode.parentNode.insertBefore( linkNode, imageNode );
			linkNode.appendChild( imageNode );
		}

captionNode = editor.dom.getParent( imageNode, '.mceTemp' );

if ( imageNode.parentNode && imageNode.parentNode.nodeName === 'A' && ! hasTextContent( imageNode.parentNode ) ) {
			node = imageNode.parentNode;
		} else {
			node = imageNode;
		}

if ( imageData.caption ) {
			imageData.caption = verifyHTML( imageData.caption );

id = imageData.attachment_id ? 'attachment_' + imageData.attachment_id : null;
			align = 'align' + ( imageData.align || 'none' );
			className = 'wp-caption ' + align;

if ( imageData.captionClassName ) {
				className += ' ' + imageData.captionClassName.replace( /[<>&]+/g,  '' );
			}

if ( ! editor.getParam( 'wpeditimage_html5_captions' ) ) {
				width = parseInt( width, 10 );
				width += 10;
			}

if ( captionNode ) {
				dl = dom.select( 'dl.wp-caption', captionNode );

if ( dl.length ) {
					dom.setAttribs( dl, {
						id: id,
						'class': className,
						style: 'width: ' + width + 'px'
					} );
				}

dd = dom.select( '.wp-caption-dd', captionNode );

if ( dd.length ) {
					dom.setHTML( dd[0], imageData.caption );
				}

} else {
				id = id ? 'id="'+ id +'" ' : '';

// Should create a new function for generating the caption markup.
				html =  '<dl ' + id + 'class="' + className +'" style="width: '+ width +'px">' +
					'<dt class="wp-caption-dt"></dt><dd class="wp-caption-dd">'+ imageData.caption +'</dd></dl>';

wrap = dom.create( 'div', { 'class': 'mceTemp' }, html );

if ( parent = dom.getParent( node, 'p' ) ) {
					parent.parentNode.insertBefore( wrap, parent );
				} else {
					node.parentNode.insertBefore( wrap, node );
				}

editor.$( wrap ).find( 'dt.wp-caption-dt' ).append( node );

if ( parent && dom.isEmpty( parent ) ) {
					dom.remove( parent );
				}
			}
		} else if ( captionNode ) {
			// Remove the caption wrapper and place the image in new paragraph.
			parent = dom.create( 'p' );
			captionNode.parentNode.insertBefore( parent, captionNode );
			parent.appendChild( node );
			dom.remove( captionNode );
		}

$imageNode = editor.$( imageNode );
		srcset = $imageNode.attr( 'srcset' );
		src = $imageNode.attr( 'src' );

// Remove srcset and sizes if the image file was edited or the image was replaced.
		if ( srcset && src ) {
			src = src.replace( /[?#].*/, '' );

if ( srcset.indexOf( src ) === -1 ) {
				$imageNode.attr( 'srcset', null ).attr( 'sizes', null );
			}
		}

if ( wp.media.events ) {
			wp.media.events.trigger( 'editor:image-update', {
				editor: editor,
				metadata: imageData,
				image: imageNode
			} );
		}

editor.nodeChanged();
	}

function editImage( img ) {
		var frame, callback, metadata, imageNode;

if ( typeof wp === 'undefined' || ! wp.media ) {
			editor.execCommand( 'mceImage' );
			return;
		}

metadata = extractImageData( img );

// Mark the image node so we can select it later.
		editor.$( img ).attr( 'data-wp-editing', 1 );

// Manipulate the metadata by reference that is fed into the PostImage model used in the media modal.
		wp.media.events.trigger( 'editor:image-edit', {
			editor: editor,
			metadata: metadata,
			image: img
		} );

frame = wp.media({
			frame: 'image',
			state: 'image-details',
			metadata: metadata
		} );

wp.media.events.trigger( 'editor:frame-create', { frame: frame } );

callback = function( imageData ) {
			editor.undoManager.transact( function() {
				updateImage( imageNode, imageData );
			} );
			frame.detach();
		};

frame.state('image-details').on( 'update', callback );
		frame.state('replace-image').on( 'replace', callback );
		frame.on( 'close', function() {
			editor.focus();
			frame.detach();

/*
			 * `close` fires first...
			 * To be able to update the image node, we need to find it here,
			 * and use it in the callback.
			 */
			imageNode = editor.$( 'img[data-wp-editing]' )
			imageNode.removeAttr( 'data-wp-editing' );
		});

frame.open();
	}

function removeImage( node ) {
		var wrap = editor.dom.getParent( node, 'div.mceTemp' );

if ( ! wrap && node.nodeName === 'IMG' ) {
			wrap = editor.dom.getParent( node, 'a' );
		}

if ( wrap ) {
			if ( wrap.nextSibling ) {
				editor.selection.select( wrap.nextSibling );
			} else if ( wrap.previousSibling ) {
				editor.selection.select( wrap.previousSibling );
			} else {
				editor.selection.select( wrap.parentNode );
			}

editor.selection.collapse( true );
			editor.dom.remove( wrap );
		} else {
			editor.dom.remove( node );
		}

editor.nodeChanged();
		editor.undoManager.add();
	}

editor.on( 'init', function() {
		var dom = editor.dom,
			captionClass = editor.getParam( 'wpeditimage_html5_captions' ) ? 'html5-captions' : 'html4-captions';

dom.addClass( editor.getBody(), captionClass );

// Prevent IE11 from making dl.wp-caption resizable.
		if ( tinymce.Env.ie && tinymce.Env.ie > 10 ) {
			// The 'mscontrolselect' event is supported only in IE11+.
			dom.bind( editor.getBody(), 'mscontrolselect', function( event ) {
				if ( event.target.nodeName === 'IMG' && dom.getParent( event.target, '.wp-caption' ) ) {
					// Hide the thick border with resize handles around dl.wp-caption.
					editor.getBody().focus(); // :(
				} else if ( event.target.nodeName === 'DL' && dom.hasClass( event.target, 'wp-caption' ) ) {
					// Trigger the thick border with resize handles...
					// This will make the caption text editable.
					event.target.focus();
				}
			});
		}
	});

editor.on( 'ObjectResized', function( event ) {
		var node = event.target;

if ( node.nodeName === 'IMG' ) {
			editor.undoManager.transact( function() {
				var parent, width,
					dom = editor.dom;

node.className = node.className.replace( /\bsize-[^ ]+/, '' );

if ( parent = dom.getParent( node, '.wp-caption' ) ) {
					width = event.width || dom.getAttrib( node, 'width' );

if ( width ) {
						width = parseInt( width, 10 );

if ( ! editor.getParam( 'wpeditimage_html5_captions' ) ) {
							width += 10;
						}

dom.setStyle( parent, 'width', width + 'px' );
					}
				}
			});
		}
	});

editor.on( 'pastePostProcess', function( event ) {
		// Pasting in a caption node.
		if ( editor.dom.getParent( editor.selection.getNode(), 'dd.wp-caption-dd' ) ) {
			// Remove "non-block" elements that should not be in captions.
			editor.$( 'img, audio, video, object, embed, iframe, script, style', event.node ).remove();

editor.$( '*', event.node ).each( function( i, node ) {
				if ( editor.dom.isBlock( node ) ) {
					// Insert <br> where the blocks used to be. Makes it look better after pasting in the caption.
					if ( tinymce.trim( node.textContent || node.innerText ) ) {
						editor.dom.insertAfter( editor.dom.create( 'br' ), node );
						editor.dom.remove( node, true );
					} else {
						editor.dom.remove( node );
					}
				}
			});

// Trim <br> tags.
			editor.$( 'br',  event.node ).each( function( i, node ) {
				if ( ! node.nextSibling || node.nextSibling.nodeName === 'BR' ||
					! node.previousSibling || node.previousSibling.nodeName === 'BR' ) {

editor.dom.remove( node );
				}
			} );

// Pasted HTML is cleaned up for inserting in the caption.
			pasteInCaption = true;
		}
	});

editor.on( 'BeforeExecCommand', function( event ) {
		var node, p, DL, align, replacement, captionParent,
			cmd = event.command,
			dom = editor.dom;

if ( cmd === 'mceInsertContent' || cmd === 'Indent' || cmd === 'Outdent' ) {
			node = editor.selection.getNode();
			captionParent = dom.getParent( node, 'div.mceTemp' );

if ( captionParent ) {
				if ( cmd === 'mceInsertContent' ) {
					if ( pasteInCaption ) {
						pasteInCaption = false;
						/*
						 * We are in the caption element, and in 'paste' context,
						 * and the pasted HTML was cleaned up on 'pastePostProcess' above.
						 * Let it be pasted in the caption.
						 */
						return;
					}

/*
					 * The paste is somewhere else in the caption DL element.
					 * Prevent pasting in there as it will break the caption.
					 * Make new paragraph under the caption DL and move the caret there.
					 */
					p = dom.create( 'p' );
					dom.insertAfter( p, captionParent );
					editor.selection.setCursorLocation( p, 0 );

/*
					 * If the image is selected and the user pastes "over" it,
					 * replace both the image and the caption elements with the pasted content.
					 * This matches the behavior when pasting over non-caption images.
					 */
					if ( node.nodeName === 'IMG' ) {
						editor.$( captionParent ).remove();
					}

editor.nodeChanged();
				} else {
					// Clicking Indent or Outdent while an image with a caption is selected breaks the caption.
					// See #38313.
					event.preventDefault();
					event.stopImmediatePropagation();
					return false;
				}
			}
		} else if ( cmd === 'JustifyLeft' || cmd === 'JustifyRight' || cmd === 'JustifyCenter' || cmd === 'wpAlignNone' ) {
			node = editor.selection.getNode();
			align = 'align' + cmd.slice( 7 ).toLowerCase();
			DL = editor.dom.getParent( node, '.wp-caption' );

if ( node.nodeName !== 'IMG' && ! DL ) {
				return;
			}

node = DL || node;

if ( editor.dom.hasClass( node, align ) ) {
				replacement = ' alignnone';
			} else {
				replacement = ' ' + align;
			}

node.className = trim( node.className.replace( / ?align(left|center|right|none)/g, '' ) + replacement );

editor.nodeChanged();
			event.preventDefault();

if ( toolbar ) {
				toolbar.reposition();
			}

editor.fire( 'ExecCommand', {
				command: cmd,
				ui: event.ui,
				value: event.value
			} );
		}
	});

editor.on( 'keydown', function( event ) {
		var node, wrap, P, spacer,
			selection = editor.selection,
			keyCode = event.keyCode,
			dom = editor.dom,
			VK = tinymce.util.VK;

if ( keyCode === VK.ENTER ) {
			// When pressing Enter inside a caption move the caret to a new parapraph under it.
			node = selection.getNode();
			wrap = dom.getParent( node, 'div.mceTemp' );

if ( wrap ) {
				dom.events.cancel( event ); // Doesn't cancel all :(

// Remove any extra dt and dd cleated on pressing Enter...
				tinymce.each( dom.select( 'dt, dd', wrap ), function( element ) {
					if ( dom.isEmpty( element ) ) {
						dom.remove( element );
					}
				});

spacer = tinymce.Env.ie && tinymce.Env.ie < 11 ? '' : '<br data-mce-bogus="1" />';
				P = dom.create( 'p', null, spacer );

if ( node.nodeName === 'DD' ) {
					dom.insertAfter( P, wrap );
				} else {
					wrap.parentNode.insertBefore( P, wrap );
				}

editor.nodeChanged();
				selection.setCursorLocation( P, 0 );
			}
		} else if ( keyCode === VK.DELETE || keyCode === VK.BACKSPACE ) {
			node = selection.getNode();

if ( node.nodeName === 'DIV' && dom.hasClass( node, 'mceTemp' ) ) {
				wrap = node;
			} else if ( node.nodeName === 'IMG' || node.nodeName === 'DT' || node.nodeName === 'A' ) {
				wrap = dom.getParent( node, 'div.mceTemp' );
			}

if ( wrap ) {
				dom.events.cancel( event );
				removeImage( node );
				return false;
			}
		}
	});

/*
	 * After undo/redo FF seems to set the image height very slowly when it is set to 'auto' in the CSS.
	 * This causes image.getBoundingClientRect() to return wrong values and the resize handles are shown in wrong places.
	 * Collapse the selection to remove the resize handles.
	 */
	if ( tinymce.Env.gecko ) {
		editor.on( 'undo redo', function() {
			if ( editor.selection.getNode().nodeName === 'IMG' ) {
				editor.selection.collapse();
			}
		});
	}

editor.wpSetImgCaption = function( content ) {
		return parseShortcode( content );
	};

editor.wpGetImgCaption = function( content ) {
		return getShortcode( content );
	};

editor.on( 'beforeGetContent', function( event ) {
		if ( event.format !== 'raw' ) {
			editor.$( 'img[id="__wp-temp-img-id"]' ).removeAttr( 'id' );
		}
	});

editor.on( 'BeforeSetContent', function( event ) {
		if ( event.format !== 'raw' ) {
			event.content = editor.wpSetImgCaption( event.content );
		}
	});

editor.on( 'PostProcess', function( event ) {
		if ( event.get ) {
			event.content = editor.wpGetImgCaption( event.content );
		}
	});

( function() {
		var wrap;

editor.on( 'dragstart', function() {
			var node = editor.selection.getNode();

if ( node.nodeName === 'IMG' ) {
				wrap = editor.dom.getParent( node, '.mceTemp' );

if ( ! wrap && node.parentNode.nodeName === 'A' && ! hasTextContent( node.parentNode ) ) {
					wrap = node.parentNode;
				}
			}
		} );

editor.on( 'drop', function( event ) {
			var dom = editor.dom,
				rng = tinymce.dom.RangeUtils.getCaretRangeFromPoint( event.clientX, event.clientY, editor.getDoc() );

// Don't allow anything to be dropped in a captioned image.
			if ( rng && dom.getParent( rng.startContainer, '.mceTemp' ) ) {
				event.preventDefault();
			} else if ( wrap ) {
				event.preventDefault();

editor.undoManager.transact( function() {
					if ( rng ) {
						editor.selection.setRng( rng );
					}

editor.selection.setNode( wrap );
					dom.remove( wrap );
				} );
			}

wrap = null;
		} );
	} )();

// Add to editor.wp.
	editor.wp = editor.wp || {};
	editor.wp.isPlaceholder = isPlaceholder;

// Back-compat.
	return {
		_do_shcode: parseShortcode,
		_get_shcode: getShortcode
	};
});

Editing: plugin.js

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