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+/**
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+ * @license Copyright (c) 2003-2016, CKSource - Frederico Knabben. All rights reserved.
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+ * For licensing, see LICENSE.md.
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+ */
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+
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+'use strict';
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+
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+import ClassicEditor from '/ckeditor5/editor-classic/classic.js';
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+
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+import Feature from '/ckeditor5/feature.js';
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+
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+import TreeWalker from '/ckeditor5/engine/model/treewalker.js';
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+import Position from '/ckeditor5/engine/model/position.js';
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+import Range from '/ckeditor5/engine/model/range.js';
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+import LivePosition from '/ckeditor5/engine/model/liveposition.js';
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+
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+import BuildModelConverterFor from '/ckeditor5/engine/conversion/model-converter-builder.js';
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+import BuildViewConverterFor from '/ckeditor5/engine/conversion/view-converter-builder.js';
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+
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+import AttributeElement from '/ckeditor5/engine/view/attributeelement.js';
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+
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+export default class Link extends Feature {
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+ init() {
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+ const editor = this.editor;
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+ const data = editor.data;
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+ const editing = editor.editing;
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+
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+ // Allow bold attribute on all inline nodes.
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+ editor.document.schema.allow( { name: '$inline', attributes: [ 'link' ] } );
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+
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+ // Build converter from model to view for data and editing pipelines.
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+ BuildModelConverterFor( data.modelToView, editing.modelToView )
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+ .fromAttribute( 'link' )
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+ .toElement( ( href ) => new AttributeElement( 'a', { href } ) );
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+
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+ // Build converter from view to model for data pipeline.
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+ BuildViewConverterFor( data.viewToModel )
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+ .fromElement( 'a' )
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+ .toAttribute( ( viewElement ) => ( { key: 'link', value: viewElement.getAttribute( 'href' ) } ) );
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+ }
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+}
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+
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+const urlRegex = /https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)/;
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+
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+export default class AutoLinker extends Feature {
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+ init() {
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+ this.editor.document.on( 'change', ( event, type, changes, batch ) => {
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+ if ( type != 'insert' ) {
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+ return;
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+ }
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+
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+ for ( let value of changes.range.getItems( { singleCharacters: true } ) ) {
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+ const walker = new TreeWalker( {
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+ direction: 'BACKWARD',
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+ startPosition: Position.createAfter( value )
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+ } );
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+
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+ const currentValue = walker.next().value;
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+ const text = currentValue.item.text;
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+
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+ if ( !text ) {
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+ return;
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+ }
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+
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+ let matchedUrl = urlRegex.exec( text );
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+
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+ if ( !matchedUrl ) {
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+ return;
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+ }
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+
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+ const doc = this.editor.document;
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+ const url = matchedUrl[ 0 ];
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+ const offset = _getLastPathPart( currentValue.nextPosition.path ) + matchedUrl.index;
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+ const livePos = LivePosition.createFromParentAndOffset( currentValue.item.commonParent, offset );
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+
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+ doc.enqueueChanges( () => {
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+ const urlRange = Range.createFromPositionAndShift( livePos, url.length );
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+ batch.setAttr( 'link', url, urlRange );
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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 _getLastPathPart( path ) {
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+ return path[ path.length - 1 ];
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+}
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+
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+ClassicEditor.create( document.querySelector( '#editor' ), {
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+ features: [ 'delete', 'enter', 'typing', 'paragraph', 'undo', Link, AutoLinker ],
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+ toolbar: [ 'undo', 'redo' ]
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+} );
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