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- /**
- * @license Copyright (c) 2003-2016, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md.
- */
- 'use strict';
- import ModelTreeWalker from '../treemodel/treewalker.js';
- import ModelRange from '../treemodel/range.js';
- import ViewElement from '../treeview/element.js';
- import ViewText from '../treeview/text.js';
- /**
- * Contains {@link engine.treeModel model} to {@link engine.treeView view} converters for
- * {@link engine.treeController.ModelConversionDispatcher}.
- *
- * @namespace engine.treeController.modelToView
- */
- /**
- * Function factory, creates a converter that converts node insertion changes from the model to the view.
- * The view element that will be added to the view depends on passed parameter. If {@link engine.treeView.Element} was passed,
- * it will be cloned and the copy will be inserted. If `Function` is provided, it is passed all the parameters of the
- * {@link engine.treeController.ModelConversionDispatcher.insert dispatcher's insert event}. It's expected that the
- * function returns a {@link engine.treeView.Element}. The result of the function will be inserted to the view.
- *
- * The converter automatically consumes corresponding value from consumables list, stops the event (see
- * {@link engine.treeController.ModelConversionDispatcher}) and bind model and view elements.
- *
- * modelDispatcher.on( 'insert:element:p', insertElement( new ViewElement( 'p' ) ) );
- *
- * modelDispatcher.on(
- * 'insert:element:myElem',
- * insertElement( ( data, consumable, conversionApi ) => {
- * let myElem = new ViewElement( 'myElem', { myAttr: true }, new ViewText( 'myText' ) );
- *
- * // Do something fancy with myElem using data/consumable/conversionApi ...
- *
- * return myElem;
- * }
- * ) );
- *
- * @external engine.treeController.modelToView
- * @function engine.treeController.modelToView.insertElement
- * @param {engine.treeView.Element|Function} elementCreator View element, or function returning a view element, which
- * will be inserted.
- * @returns {Function} Insert element event converter.
- */
- export function insertElement( elementCreator ) {
- return ( evt, data, consumable, conversionApi ) => {
- consumable.consume( data.item, 'insert' );
- const viewPosition = conversionApi.mapper.toViewPosition( data.range.start );
- const viewElement = ( elementCreator instanceof ViewElement ) ?
- elementCreator.clone( true ) :
- elementCreator( data, consumable, conversionApi );
- conversionApi.mapper.bind( data.item, viewElement );
- conversionApi.writer.insert( viewPosition, viewElement );
- evt.stop();
- };
- }
- /**
- * Function factory, creates a default model-to-view converter for text insertion changes.
- *
- * The converter automatically consumes corresponding value from consumables list, stops the event (see
- * {@link engine.treeController.ModelConversionDispatcher}) and bind model and view elements.
- *
- * modelDispatcher.on( 'insert:text', insertText() );
- *
- * @external engine.treeController.modelToView
- * @function engine.treeController.modelToView.insertText
- * @returns {Function} Insert text event converter.
- */
- export function insertText() {
- return ( evt, data, consumable, conversionApi ) => {
- consumable.consume( data.item, 'insert' );
- const viewPosition = conversionApi.mapper.toViewPosition( data.position );
- const viewText = new ViewText( data.item.data );
- conversionApi.writer.insert( viewPosition, viewText );
- evt.stop();
- };
- }
- /**
- * Function factory, creates a converter that converts set/change attribute changes from the model to the view. Attributes
- * from model are converted to the attributes in the view. You may provide a custom function to generate a set of attributes
- * that will be added/changed. If not provided, model attributes will be converted to view elements attributes on 1-to-1 basis.
- *
- * The converter automatically consumes corresponding value from consumables list, stops the event (see
- * {@link engine.treeController.ModelConversionDispatcher}) and bind model and view elements.
- *
- * modelDispatcher.on( 'addAttribute:customAttr:myElem', setAttribute( ( data ) => {
- * let attributes = {};
- *
- * if ( data.item.hasAttribute( 'otherCustomAttr' ) ) {
- * // do something with attributes variable ...
- * } else {
- * // do something else with attributes variable ...
- * }
- *
- * return attributes;
- * } ) );
- *
- * @external engine.treeController.modelToView
- * @function engine.treeController.modelToView.setAttribute
- * @param {Function} [attributesCreator] Function returning a `string`, `number` or an `object` which values are `string`s
- * or `number`s. If `object` is returned, it's keys are used as attributes keys and values as attributes values. The function
- * is passed all the parameters of the {@link engine.treeController.ModelConversionDispatcher.addAttribute}
- * or {@link engine.treeController.ModelConversionDispatcher.changeAttribute) event.
- * @returns {Function} Set/change attribute converter.
- */
- export function setAttribute( attributesCreator ) {
- return ( evt, data, consumable, conversionApi ) => {
- let attributes;
- if ( !attributesCreator ) {
- attributes = data.item.getAttribute( data.attributeKey );
- } else {
- attributes = attributesCreator( data, consumable, conversionApi );
- }
- if ( attributes ) {
- consumable.consume( data.item, eventNameToConsumableType( evt.name ) );
- const viewElement = conversionApi.mapper.toViewElement( data.item );
- if ( typeof attributes === 'string' || typeof attributes === 'number' ) {
- viewElement.setAttribute( data.attributeKey, attributes );
- } else {
- for ( let attributeKey in attributes ) {
- viewElement.setAttribute( attributeKey, attributes[ attributeKey ] );
- }
- }
- evt.stop();
- }
- };
- }
- /**
- * Function factory, creates a converter that converts remove attribute changes from the model to the view. This converter
- * assumes, that attributes from model were converted to the attributes in the view. You may provide a custom function to
- * generate a set of attributes that will be removed. If not provided, model attributes will be removed from view elements on 1-to-1 basis.
- *
- * The converter automatically consumes corresponding value from consumables list, stops the event (see
- * {@link engine.treeController.ModelConversionDispatcher}) and bind model and view elements.
- *
- * modelDispatcher.on( 'removeAttribute:customAttr:myElem', removeAttribute( ( data ) => {
- * let attributes = {};
- *
- * if ( data.item.hasAttribute( 'otherCustomAttr' ) ) {
- * // do something with attributes variable ...
- * } else {
- * // do something else with attributes variable ...
- * }
- *
- * return attributes;
- * } ) );
- *
- * @external engine.treeController.modelToView
- * @function engine.treeController.modelToView.removeAttribute
- * @param {Function} [attributesCreator] Function returning a `string` or an `array` of `string`s. If `array` is returned,
- * it's values are used as attributes keys to remove. The function is passed all the parameters of the
- * {@link engine.treeController.ModelConversionDispatcher.removeAttribute} event.
- * @returns {Function} Remove attribute converter.
- */
- export function removeAttribute( attributesCreator ) {
- return ( evt, data, consumable, conversionApi ) => {
- let attributeKeys;
- if ( !attributesCreator ) {
- attributeKeys = data.attributeKey;
- } else {
- attributeKeys = attributesCreator( data, consumable, conversionApi );
- }
- if ( attributeKeys ) {
- consumable.consume( data.item, eventNameToConsumableType( evt.name ) );
- const viewElement = conversionApi.mapper.toViewElement( data.item );
- if ( typeof attributeKeys === 'string' ) {
- viewElement.removeAttribute( attributeKeys );
- } else {
- for ( let attributeKey of attributeKeys ) {
- viewElement.removeAttribute( attributeKey );
- }
- }
- evt.stop();
- }
- };
- }
- /**
- * Function factory, creates a converter that converts set/change attribute changes from the model to the view. In this case,
- * model attributes are converted to a view element that will be wrapping view nodes which corresponding model nodes had
- * the attribute set. This is useful for attributes like `bold`, which may be set on a text nodes in model but are
- * represented as an element in the view:
- *
- * [paragraph] MODEL ====> VIEW <p>
- * |- a {bold: true} |- <b>
- * |- b {bold: true} | |- ab
- * |- c |- c
- *
- * The wrapping node depends on passed parameter. If {@link engine.treeView.Element} was passed, it will be cloned and
- * the copy will become the wrapping element. If `Function` is provided, it is passed all the parameters of the
- * {@link engine.treeController.ModelConversionDispatcher.setAttribute event}. It's expected that the
- * function returns a {@link engine.treeView.Element}. The result of the function will be the wrapping element.
- *
- * The converter automatically consumes corresponding value from consumables list, stops the event (see
- * {@link engine.treeController.ModelConversionDispatcher}) and bind model and view elements.
- *
- * modelDispatcher.on( 'addAttribute:bold', wrap( new ViewElement( 'strong' ) ) );
- *
- * @external engine.treeController.modelToView
- * @function engine.treeController.modelToView.wrap
- * @param {engine.treeView.Element|Function} elementCreator View element, or function returning a view element, which will
- * be used for wrapping.
- * @returns {Function} Set/change attribute converter.
- */
- export function wrap( elementCreator ) {
- return ( evt, data, consumable, conversionApi ) => {
- consumable.consume( data.item, eventNameToConsumableType( evt.name ) );
- const viewRange = conversionApi.mapper.toViewRange( data.range );
- const viewElement = ( elementCreator instanceof ViewElement ) ?
- elementCreator.clone( true ) :
- elementCreator( data, consumable, conversionApi );
- conversionApi.writer.wrap( viewRange, viewElement, evt.priority );
- evt.stop();
- };
- }
- /**
- * Function factory, creates a converter that converts remove attribute changes from the model to the view. It assumes, that
- * attributes from model were converted to elements in the view. This converter will unwrap view nodes from corresponding
- * view element if given attribute was removed.
- *
- * The view element type that will be unwrapped depends on passed parameter.
- * If {@link engine.treeView.Element} was passed, it will be used to look for similar element in the view for unwrapping. If `Function`
- * is provided, it is passed all the parameters of the {@link engine.treeController.ModelConversionDispatcher.setAttribute event}.
- * It's expected that the function returns a {@link engine.treeView.Element}. The result of the function will be used to
- * look for similar element in the view for unwrapping.
- *
- * The converter automatically consumes corresponding value from consumables list, stops the event (see
- * {@link engine.treeController.ModelConversionDispatcher}) and bind model and view elements.
- *
- * modelDispatcher.on( 'removeAttribute:bold', unwrap( new ViewElement( 'strong' ) ) );
- *
- * @see engine.treeController.modelToView.wrap
- * @external engine.treeController.modelToView
- * @function engine.treeController.modelToView.unwrap
- * @param {engine.treeView.Element|Function} elementCreator View element, or function returning a view element, which will
- * be used for unwrapping.
- * @returns {Function} Remove attribute converter.
- */
- export function unwrap( elementCreator ) {
- return ( evt, data, consumable, conversionApi ) => {
- consumable.consume( data.item, eventNameToConsumableType( evt.name ) );
- const viewRange = conversionApi.mapper.toViewRange( data.range );
- const viewNode = ( elementCreator instanceof ViewElement ) ?
- elementCreator.clone( true ) :
- elementCreator( data, consumable, conversionApi );
- conversionApi.writer.unwrap( viewRange, viewNode );
- evt.stop();
- };
- }
- /**
- * Function factory, creates a default model-to-view converter for nodes move changes.
- *
- * modelDispatcher.on( 'move', move() );
- *
- * @external engine.treeController.modelToView
- * @function engine.treeController.modelToView.move
- * @returns {Function} Move event converter.
- */
- export function move() {
- return ( evt, data, conversionApi ) => {
- const walker = new ModelTreeWalker( { boundaries: data.range, shallow: true } );
- let length = 0;
- for ( let value of walker ) {
- length += value.length;
- }
- const sourceModelRange = ModelRange.createFromPositionAndShift( data.sourcePosition, length );
- const sourceViewRange = conversionApi.mapper.toViewRange( sourceModelRange );
- const targetViewPosition = conversionApi.mapper.toViewRange( data.range.start );
- conversionApi.writer.move( sourceViewRange, targetViewPosition );
- };
- }
- /**
- * Function factory, creates a default model-to-view converter for nodes remove changes.
- *
- * modelDispatcher.on( 'remove', remove() );
- *
- * @external engine.treeController.modelToView
- * @function engine.treeController.modelToView.remove
- * @returns {Function} Remove event converter.
- */
- export function remove() {
- return ( evt, data, conversionApi ) => {
- const walker = new ModelTreeWalker( { boundaries: data.range, shallow: true } );
- let length = 0;
- for ( let value of walker ) {
- length += value.length;
- }
- const sourceModelRange = ModelRange.createFromPositionAndShift( data.sourcePosition, length );
- const sourceViewRange = conversionApi.mapper.toViewRange( sourceModelRange );
- conversionApi.writer.remove( sourceViewRange );
- };
- }
- function eventNameToConsumableType( evtName ) {
- const parts = evtName.split( ':' );
- return parts[ 0 ] + ':' + parts[ 1 ];
- }
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