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import deindent from '../utils/deindent.js';
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import addElementAttributes from './attributes/addElementAttributes.js';
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import Component from './Component.js';
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export default {
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enter ( generator, node ) {
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const isComponent = node.name in generator.components;
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if ( isComponent ) {
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return Component.enter( generator, node );
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}
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const name = generator.current.counter( node.name );
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const local = {
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name,
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namespace: node.name === 'svg' ? 'http://www.w3.org/2000/svg' : generator.current.namespace,
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isComponent: false,
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allUsedContexts: new Set(),
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init: [],
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mount: [],
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update: [],
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detach: [],
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teardown: []
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};
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const isToplevel = generator.current.localElementDepth === 0;
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addElementAttributes( generator, node, local );
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if ( local.allUsedContexts.size ) {
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const contextNames = [...local.allUsedContexts];
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const initialProps = contextNames.map( contextName => {
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if ( contextName === 'root' ) return `root: root`;
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const listName = generator.current.listNames[ contextName ];
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const indexName = generator.current.indexNames[ contextName ];
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return `${listName}: ${listName},\n${indexName}: ${indexName}`;
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}).join( ',\n' );
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const updates = contextNames.map( contextName => {
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if ( contextName === 'root' ) return `${name}.__svelte.root = root;`;
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const listName = generator.current.listNames[ contextName ];
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const indexName = generator.current.indexNames[ contextName ];
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return `${name}.__svelte.${listName} = ${listName};\n${name}.__svelte.${indexName} = ${indexName};`;
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}).join( '\n' );
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local.init.push( deindent`
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${name}.__svelte = {
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${initialProps}
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};
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` );
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local.update.push( updates );
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}
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let render = local.namespace ?
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`var ${name} = document.createElementNS( '${local.namespace}', '${node.name}' );` :
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`var ${name} = document.createElement( '${node.name}' );`;
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if ( generator.cssId && !generator.current.elementDepth ) {
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render += `\n${name}.setAttribute( '${generator.cssId}', '' );`;
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}
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local.init.unshift( render );
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if ( isToplevel ) {
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local.detach.push( `${name}.parentNode.removeChild( ${name} );` );
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}
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// special case – bound <option> without a value attribute
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if ( node.name === 'option' && !node.attributes.find( attribute => attribute.type === 'Attribute' && attribute.name === 'value' ) ) { // TODO check it's bound
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// const dynamic = node.children.length > 1 || node.children[0].type !== 'Text';
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// TODO do this in init for static values... have to do it in `leave`, because they don't exist yet
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local.update.push( `${name}.__value = ${name}.textContent` );
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}
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generator.current.initStatements.push( local.init.join( '\n' ) );
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if ( local.update.length ) generator.current.updateStatements.push( local.update.join( '\n' ) );
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if ( local.mount.length ) generator.current.mountStatements.push( local.mount.join( '\n' ) );
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if ( local.detach.length ) generator.current.detachStatements.push( local.detach.join( '\n' ) );
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generator.current.teardownStatements.push( local.teardown.join( '\n' ) );
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generator.createMountStatement( name );
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generator.push({
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namespace: local.namespace,
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target: name,
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parent: generator.current,
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elementDepth: generator.current.elementDepth + 1,
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localElementDepth: generator.current.localElementDepth + 1
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});
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},
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leave ( generator, node ) {
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const isComponent = node.name in generator.components;
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if ( isComponent ) {
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return Component.leave( generator, node );
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}
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generator.pop();
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}
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};
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