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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 Editor from '/ckeditor5/editor.js';
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+import ModelDocument from '/ckeditor5/engine/treemodel/document.js';
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+import Range from '/ckeditor5/engine/treemodel/range.js';
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+import Position from '/ckeditor5/engine/treemodel/position.js';
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+import UndoFeature from '/ckeditor5/undo/undo.js';
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+
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+let element, editor, undo, doc, root;
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+
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+import { getData, setData } from '/tests/engine/_utils/model.js';
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+
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+import deleteContents from '/ckeditor5/engine/treemodel/composer/deletecontents.js';
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+
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+before( () => {
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+ element = document.createElement( 'div' );
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+ document.body.appendChild( element );
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+
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+ editor = new Editor( element );
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+
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+ doc = new ModelDocument();
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+ editor.document = doc;
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+ root = doc.createRoot( 'root' );
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+
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+ undo = new UndoFeature( editor );
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+ undo.init();
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+} );
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+
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+after( () => {
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+ undo.destroy();
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+} );
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+
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+function setSelection( pathA, pathB ) {
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+ doc.selection.setRanges( [ new Range( new Position( root, pathA ), new Position( root, pathB ) ) ] );
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+}
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+
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+function input( input ) {
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+ setData( doc, 'root', input );
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+}
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+
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+function output( output ) {
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+ expect( getData( doc, 'root', { selection: true } ) ).to.equal( output );
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+}
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+
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+function undoDisabled() {
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+ expect( editor.commands.get( 'undo' ).isEnabled ).to.be.false;
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+}
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+
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+describe( 'undo integration', () => {
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+ beforeEach( () => {
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+ // Clearing root because `setData` has a bug.
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+ root.removeChildren( 0, root.getChildCount() );
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+
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+ editor.commands.get( 'undo' ).clearStack();
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+ editor.commands.get( 'redo' ).clearStack();
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+ } );
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+
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+ describe( 'adding and removing content', () => {
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+ it( 'add and undo', () => {
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+ input( '<p>fo<selection />o</p><p>bar</p>' );
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+
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+ doc.batch().insert( doc.selection.getFirstPosition(), 'zzz' );
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+ output( '<p>fozzz<selection />o</p><p>bar</p>' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p>fo<selection />o</p><p>bar</p>' );
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+
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+ undoDisabled();
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+ } );
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+
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+ it( 'multiple adding and undo', () => {
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+ input( '<p>fo<selection />o</p><p>bar</p>' );
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+
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+ doc.batch()
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+ .insert( doc.selection.getFirstPosition(), 'zzz' )
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+ .insert( new Position( root, [ 1, 0 ] ), 'xxx' );
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+ output( '<p>fozzz<selection />o</p><p>xxxbar</p>' );
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+
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+ setSelection( [ 1, 0 ], [ 1, 0 ] );
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+ doc.batch().insert( doc.selection.getFirstPosition(), 'yyy' );
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+ output( '<p>fozzzo</p><p>yyy<selection />xxxbar</p>' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p>fozzzo</p><p><selection />xxxbar</p>' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p>fo<selection />o</p><p>bar</p>' );
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+
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+ undoDisabled();
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+ } );
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+
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+ it( 'multiple adding mixed with undo', () => {
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+ input( '<p>fo<selection />o</p><p>bar</p>' );
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+
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+ doc.batch().insert( doc.selection.getFirstPosition(), 'zzz' );
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+ output( '<p>fozzz<selection />o</p><p>bar</p>' );
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+
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+ setSelection( [ 1, 0 ], [ 1, 0 ] );
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+ doc.batch().insert( doc.selection.getFirstPosition(), 'yyy' );
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+ output( '<p>fozzzo</p><p>yyy<selection />bar</p>' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p>fozzzo</p><p><selection />bar</p>' );
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+
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+ setSelection( [ 0, 0 ], [ 0, 0 ] );
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+ doc.batch().insert( doc.selection.getFirstPosition(), 'xxx' );
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+ output( '<p>xxx<selection />fozzzo</p><p>bar</p>' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p><selection />fozzzo</p><p>bar</p>' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p>fo<selection />o</p><p>bar</p>' );
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+
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+ undoDisabled();
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+ } );
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+
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+ it( 'multiple remove and undo', () => {
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+ input( '<p><selection />foo</p><p>bar</p>' );
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+
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+ doc.batch().remove( Range.createFromPositionAndShift( doc.selection.getFirstPosition(), 2 ) );
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+ output( '<p><selection />o</p><p>bar</p>' );
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+
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+ setSelection( [ 1, 1 ], [ 1, 1 ] );
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+ doc.batch().remove( Range.createFromPositionAndShift( doc.selection.getFirstPosition(), 2 ) );
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+ output( '<p>o</p><p>b<selection /></p>' );
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+
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+ editor.execute( 'undo' );
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+ // Here is an edge case that selection could be before or after `ar` but selection always ends up after.
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+ output( '<p>o</p><p>bar<selection /></p>' );
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+
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+ editor.execute( 'undo' );
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+ // As above.
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+ output( '<p>fo<selection />o</p><p>bar</p>' );
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+
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+ undoDisabled();
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+ } );
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+
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+ it( 'add and remove different parts and undo', () => {
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+ input( '<p>fo<selection />o</p><p>bar</p>' );
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+
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+ doc.batch().insert( doc.selection.getFirstPosition(), 'zzz' );
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+ output( '<p>fozzz<selection />o</p><p>bar</p>' );
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+
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+ setSelection( [ 1, 2 ], [ 1, 2 ] );
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+ doc.batch().remove( Range.createFromPositionAndShift( new Position( root, [ 1, 1 ] ) , 1 ) );
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+ output( '<p>fozzzo</p><p>b<selection />r</p>' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p>fozzzo</p><p>ba<selection />r</p>' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p>fo<selection />o</p><p>bar</p>' );
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+
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+ undoDisabled();
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+ } );
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+
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+ it( 'add and remove same part and undo', () => {
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+ // This test case fails because some operations are transformed to NoOperations incorrectly.
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+ input( '<p>fo<selection />o</p><p>bar</p>' );
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+
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+ doc.batch().insert( doc.selection.getFirstPosition(), 'zzz' );
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+ output( '<p>fozzz<selection />o</p><p>bar</p>' );
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+
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+ doc.batch().remove( Range.createFromPositionAndShift( new Position( root, [ 0, 2 ] ) , 3 ) );
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+ output( '<p>fo<selection />o</p><p>bar</p>' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p>fozzz<selection />o</p><p>bar</p>' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p>fo<selection />o</p><p>bar</p>' );
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+
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+ undoDisabled();
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+ } );
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+ } );
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+
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+ describe( 'moving', () => {
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+ it( 'move same content twice then undo', () => {
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+ // This test case fails because some operations are transformed to NoOperations incorrectly.
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+ input( '<p>f<selection>o</selection>z</p><p>bar</p>' );
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+
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+ doc.batch().move( doc.selection.getFirstRange(), new Position( root, [ 1, 0 ] ) );
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+ output( '<p>fz</p><p><selection>o</selection>bar</p>' );
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+
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+ doc.batch().move( doc.selection.getFirstRange(), new Position( root, [ 0, 2 ] ) );
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+ output( '<p>fz<selection>o</selection></p><p>bar</p>' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p>fz</p><p><selection>o</selection>bar</p>' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p>f<selection>o</selection>z</p><p>bar</p>' );
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+
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+ undoDisabled();
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+ } );
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+
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+ it( 'move content and new parent then undo', () => {
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+ input( '<p>f<selection>o</selection>z</p><p>bar</p>' );
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+
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+ doc.batch().move( doc.selection.getFirstRange(), new Position( root, [ 1, 0 ] ) );
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+ output( '<p>fz</p><p><selection>o</selection>bar</p>' );
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+
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+ setSelection( [ 1 ], [ 2 ] );
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+ doc.batch().move( doc.selection.getFirstRange(), new Position( root, [ 0 ] ) );
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+ output( '<selection><p>obar</p></selection><p>fz</p>' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p>fz</p><selection><p>obar</p></selection>' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p>f<selection>o</selection>z</p><p>bar</p>' );
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+
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+ undoDisabled();
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+ } );
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+ } );
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+
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+ describe( 'attributes with other', () => {
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+ it( 'attributes then insert inside then undo', () => {
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+ input( '<p>fo<selection>ob</selection>ar</p>' );
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+
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+ doc.batch().setAttr( 'bold', true, doc.selection.getFirstRange() );
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+ output( '<p>fo<selection><$text bold=true>ob</$text></selection>ar</p>' );
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+
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+ setSelection( [ 0, 3 ], [ 0, 3 ] );
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+ doc.batch().insert( doc.selection.getFirstPosition(), 'zzz' );
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+ output( '<p>fo<$text bold=true>o</$text>zzz<selection bold=true /><$text bold=true>b</$text>ar</p>' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p>fo<$text bold=true>o<selection bold=true />b</$text>ar</p>' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p>fo<selection>ob</selection>ar</p>' );
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+
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+ undoDisabled();
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+ } );
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+ } );
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+
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+ describe( 'wrapping, unwrapping, merging, splitting', () => {
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+ it( 'wrap and undo', () => {
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+ input( 'fo<selection>zb</selection>ar' );
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+
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+ doc.batch().wrap( doc.selection.getFirstRange(), 'p' );
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+ output( 'fo<p><selection>zb</selection></p>ar' );
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+
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+ editor.execute( 'undo' );
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+ output( 'fo<selection>zb</selection>ar' );
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+
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+ undoDisabled();
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+ } );
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+
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+ it( 'wrap, move and undo', () => {
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+ input( 'fo<selection>zb</selection>ar' );
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+
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+ doc.batch().wrap( doc.selection.getFirstRange(), 'p' );
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+ output( 'fo<p><selection>zb</selection></p>ar' );
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+
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+ setSelection( [ 2, 0 ], [ 2, 1 ] );
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+ doc.batch().move( doc.selection.getFirstRange(), new Position( root, [ 0 ] ) );
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+ output( '<selection>z</selection>fo<p>b</p>ar' );
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+
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+ editor.execute( 'undo' );
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+ output( 'fo<p><selection>z</selection>b</p>ar' );
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+
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+ // This test case fails here for unknown reason, but "z" letter magically disappears.
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+ // AssertionError: expected 'fo<selection>b</selection>ar' to equal 'fo<selection>zb</selection>ar'
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+ editor.execute( 'undo' );
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+ output( 'fo<selection>zb</selection>ar' );
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+
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+ undoDisabled();
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+ } );
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+
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+ it( 'unwrap and undo', () => {
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+ input( '<p>foo<selection />bar</p>' );
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+
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+ doc.batch().unwrap( doc.selection.getFirstPosition().parent );
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+ output( 'foo<selection />bar' );
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+
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+ editor.execute( 'undo' );
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+ output( '<p>foo<selection />bar</p>' );
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+
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+ undoDisabled();
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+ } );
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+
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+ it( 'merge and undo', () => {
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+ input( '<p>foo</p><p><selection />bar</p>' );
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+
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+ doc.batch().merge( new Position( root, [ 1 ] ) );
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+ // This test fails here because selection is stuck with <p> element and ends up in graveyard.
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+ // AssertionError: expected '<p>foobar</p>' to equal '<p>foo<selection />bar</p>'
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+ output( '<p>foo<selection />bar</p>' );
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+
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+ editor.execute( 'undo' );
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+ // This test fails because when selection is transformed it is first in empty <p> but when
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+ // "bar" is inserted, it gets moved to the right.
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+ // AssertionError: expected '<p>foo</p><p>bar<selection /></p>' to equal '<p>foo</p><p><selection />bar</p>'
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+ output( '<p>foo</p><p><selection />bar</p>' );
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+
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+ undoDisabled();
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+ } );
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+
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+ it( 'split and undo', () => {
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+ input( '<p>foo<selection />bar</p>' );
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+
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+ doc.batch().split( doc.selection.getFirstPosition() );
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+ // This test fails because selection ends up in wrong node after splitting.
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+ // AssertionError: expected '<p>foo<selection /></p><p>bar</p>' to equal '<p>foo</p><p><selection />bar</p>'
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+ output( '<p>foo</p><p><selection />bar</p>' );
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+
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+ editor.execute( 'undo' );
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+ // This test fails because selection after transforming ends up after inserted test.
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+ // AssertionError: expected '<p>foobar<selection /></p>' to equal '<p>foo<selection />bar</p>'
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+ output( '<p>foo<selection />bar</p>' );
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+
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+ undoDisabled();
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+ } );
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+ } );
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+
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+ describe( 'other edge cases', () => {
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+ it( 'deleteContents between two nodes', () => {
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+ input( '<p>fo<selection>o</p><p>b</selection>ar</p>' );
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+
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+ deleteContents( doc.batch(), doc.selection, { merge: true } );
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+ output( '<p>fo<selection />ar</p>' );
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+
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+ // This test case fails because of OT problems.
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+ // When the batch is undone, first MergeDelta is reversed to SplitDelta and it is undone.
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+ // Then RemoveOperations are reversed to ReinsertOperation.
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+ // Unfortunately, ReinsertOperation that inserts "o" points to the same position were split happened.
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+ // Then, when ReinsertOperation is transformed by operations of SplitDelta, it ends up in wrong <p>.
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+ editor.execute( 'undo' );
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+ output( '<p>fo<selection>o</p><p>b</selection>ar</p>' );
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+ } );
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+ } );
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+} );
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