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848 lines
24 KiB
848 lines
24 KiB
import Renderer from '../../Renderer';
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import Element from '../../../nodes/Element';
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import Wrapper from '../shared/Wrapper';
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import Block from '../../Block';
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import Node from '../../../nodes/shared/Node';
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import { is_void, quote_prop_if_necessary, quote_name_if_necessary, sanitize } from '../../../../utils/names';
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import FragmentWrapper from '../Fragment';
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import { stringify, escape_html, escape } from '../../../utils/stringify';
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import TextWrapper from '../Text';
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import fix_attribute_casing from './fix_attribute_casing';
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import deindent from '../../../utils/deindent';
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import { namespaces } from '../../../../utils/namespaces';
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import AttributeWrapper from './Attribute';
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import StyleAttributeWrapper from './StyleAttribute';
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import { dimensions } from '../../../../utils/patterns';
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import Binding from './Binding';
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import InlineComponentWrapper from '../InlineComponent';
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import add_to_set from '../../../utils/add_to_set';
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import add_event_handlers from '../shared/add_event_handlers';
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import add_actions from '../shared/add_actions';
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import create_debugging_comment from '../shared/create_debugging_comment';
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import { get_context_merger } from '../shared/get_context_merger';
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const events = [
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{
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event_names: ['input'],
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filter: (node: Element, name: string) =>
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node.name === 'textarea' ||
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node.name === 'input' && !/radio|checkbox|range/.test(node.get_static_attribute_value('type'))
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},
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{
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event_names: ['change'],
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filter: (node: Element, name: string) =>
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node.name === 'select' ||
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node.name === 'input' && /radio|checkbox/.test(node.get_static_attribute_value('type'))
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},
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{
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event_names: ['change', 'input'],
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filter: (node: Element, name: string) =>
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node.name === 'input' && node.get_static_attribute_value('type') === 'range'
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},
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{
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event_names: ['resize'],
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filter: (node: Element, name: string) =>
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dimensions.test(name)
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},
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// media events
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{
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event_names: ['timeupdate'],
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filter: (node: Element, name: string) =>
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node.is_media_node() &&
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(name === 'currentTime' || name === 'played')
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},
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{
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event_names: ['durationchange'],
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filter: (node: Element, name: string) =>
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node.is_media_node() &&
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name === 'duration'
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},
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{
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event_names: ['play', 'pause'],
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filter: (node: Element, name: string) =>
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node.is_media_node() &&
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name === 'paused'
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},
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{
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event_names: ['progress'],
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filter: (node: Element, name: string) =>
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node.is_media_node() &&
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name === 'buffered'
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},
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{
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event_names: ['loadedmetadata'],
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filter: (node: Element, name: string) =>
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node.is_media_node() &&
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(name === 'buffered' || name === 'seekable')
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},
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{
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event_names: ['volumechange'],
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filter: (node: Element, name: string) =>
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node.is_media_node() &&
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name === 'volume'
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}
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];
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export default class ElementWrapper extends Wrapper {
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node: Element;
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fragment: FragmentWrapper;
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attributes: AttributeWrapper[];
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bindings: Binding[];
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class_dependencies: string[];
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slot_block: Block;
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select_binding_dependencies?: Set<string>;
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var: string;
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constructor(
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renderer: Renderer,
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block: Block,
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parent: Wrapper,
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node: Element,
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strip_whitespace: boolean,
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next_sibling: Wrapper
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) {
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super(renderer, block, parent, node);
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this.var = node.name.replace(/[^a-zA-Z0-9_$]/g, '_')
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this.class_dependencies = [];
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this.attributes = this.node.attributes.map(attribute => {
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if (attribute.name === 'slot') {
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// TODO make separate subclass for this?
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let owner = this.parent;
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while (owner) {
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if (owner.node.type === 'InlineComponent') {
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break;
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}
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if (owner.node.type === 'Element' && /-/.test(owner.node.name)) {
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break;
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}
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owner = owner.parent;
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}
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if (owner && owner.node.type === 'InlineComponent') {
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const name = attribute.get_static_value();
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if (!(owner as InlineComponentWrapper).slots.has(name)) {
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const child_block = block.child({
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comment: create_debugging_comment(node, this.renderer.component),
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name: this.renderer.component.get_unique_name(`create_${sanitize(name)}_slot`)
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});
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const fn = get_context_merger(this.node.lets);
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(owner as InlineComponentWrapper).slots.set(name, {
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block: child_block,
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scope: this.node.scope,
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fn
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});
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this.renderer.blocks.push(child_block);
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}
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this.slot_block = (owner as InlineComponentWrapper).slots.get(name).block;
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block = this.slot_block;
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}
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}
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if (attribute.name === 'style') {
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return new StyleAttributeWrapper(this, block, attribute);
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}
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return new AttributeWrapper(this, block, attribute);
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});
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// ordinarily, there'll only be one... but we need to handle
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// the rare case where an element can have multiple bindings,
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// e.g. <audio bind:paused bind:currentTime>
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this.bindings = this.node.bindings.map(binding => new Binding(block, binding, this));
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if (node.intro || node.outro) {
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if (node.intro) block.add_intro(node.intro.is_local);
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if (node.outro) block.add_outro(node.outro.is_local);
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}
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if (node.animation) {
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block.add_animation();
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}
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// add directive and handler dependencies
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[node.animation, node.outro, ...node.actions, ...node.classes].forEach(directive => {
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if (directive && directive.expression) {
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block.add_dependencies(directive.expression.dependencies);
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}
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});
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node.handlers.forEach(handler => {
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if (handler.expression) {
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block.add_dependencies(handler.expression.dependencies);
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}
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});
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if (this.parent) {
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if (node.actions.length > 0) this.parent.cannot_use_innerhtml();
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if (node.animation) this.parent.cannot_use_innerhtml();
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if (node.bindings.length > 0) this.parent.cannot_use_innerhtml();
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if (node.classes.length > 0) this.parent.cannot_use_innerhtml();
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if (node.intro || node.outro) this.parent.cannot_use_innerhtml();
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if (node.handlers.length > 0) this.parent.cannot_use_innerhtml();
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if (this.node.name === 'option') this.parent.cannot_use_innerhtml();
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if (renderer.options.dev) {
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this.parent.cannot_use_innerhtml(); // need to use add_location
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}
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}
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this.fragment = new FragmentWrapper(renderer, block, node.children, this, strip_whitespace, next_sibling);
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if (this.slot_block) {
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block.parent.add_dependencies(block.dependencies);
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// appalling hack
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const index = block.parent.wrappers.indexOf(this);
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block.parent.wrappers.splice(index, 1);
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block.wrappers.push(this);
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}
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}
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render(block: Block, parent_node: string, parent_nodes: string) {
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const { renderer } = this;
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if (this.node.name === 'slot') {
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const slotName = this.get_static_attribute_value('name') || 'default';
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renderer.slots.add(slotName);
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}
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if (this.node.name === 'noscript') return;
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if (this.slot_block) {
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block = this.slot_block;
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}
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const node = this.var;
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const nodes = parent_nodes && block.get_unique_name(`${this.var}_nodes`) // if we're in unclaimable territory, i.e. <head>, parent_nodes is null
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block.add_variable(node);
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const render_statement = this.get_render_statement();
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block.builders.create.add_line(
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`${node} = ${render_statement};`
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);
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if (renderer.options.hydratable) {
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if (parent_nodes) {
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block.builders.claim.add_block(deindent`
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${node} = ${this.get_claim_statement(parent_nodes)};
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var ${nodes} = @children(${this.node.name === 'template' ? `${node}.content` : node});
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`);
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} else {
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block.builders.claim.add_line(
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`${node} = ${render_statement};`
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);
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}
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}
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if (parent_node) {
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block.builders.mount.add_line(
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`@append(${parent_node}, ${node});`
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);
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if (parent_node === 'document.head') {
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block.builders.destroy.add_line(`@detach(${node});`);
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}
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} else {
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block.builders.mount.add_line(`@insert(#target, ${node}, anchor);`);
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// TODO we eventually need to consider what happens to elements
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// that belong to the same outgroup as an outroing element...
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block.builders.destroy.add_conditional('detaching', `@detach(${node});`);
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}
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// insert static children with textContent or innerHTML
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if (!this.node.namespace && this.can_use_innerhtml && this.fragment.nodes.length > 0) {
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if (this.fragment.nodes.length === 1 && this.fragment.nodes[0].node.type === 'Text') {
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block.builders.create.add_line(
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`${node}.textContent = ${stringify(this.fragment.nodes[0].data)};`
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);
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} else {
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const inner_html = escape(
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this.fragment.nodes
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.map(to_html)
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.join('')
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);
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block.builders.create.add_line(
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`${node}.innerHTML = \`${inner_html}\`;`
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);
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}
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} else {
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this.fragment.nodes.forEach((child: Wrapper) => {
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child.render(
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block,
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this.node.name === 'template' ? `${node}.content` : node,
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nodes
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);
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});
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}
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const event_handler_or_binding_uses_context = (
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this.bindings.some(binding => binding.handler.uses_context) ||
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this.node.handlers.some(handler => handler.uses_context) ||
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this.node.actions.some(action => action.uses_context)
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);
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if (event_handler_or_binding_uses_context) {
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block.maintain_context = true;
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}
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this.add_bindings(block);
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this.add_event_handlers(block);
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this.add_attributes(block);
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this.add_transitions(block);
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this.add_animation(block);
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this.add_actions(block);
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this.add_classes(block);
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if (nodes && this.renderer.options.hydratable) {
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block.builders.claim.add_line(
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`${nodes}.forEach(@detach);`
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);
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}
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function to_html(wrapper: ElementWrapper | TextWrapper) {
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if (wrapper.node.type === 'Text') {
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const { parent } = wrapper.node;
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const raw = parent && (
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parent.name === 'script' ||
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parent.name === 'style'
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);
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return raw
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? wrapper.node.data
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: escape_html(wrapper.node.data)
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.replace(/\\/g, '\\\\')
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.replace(/`/g, '\\`')
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.replace(/\$/g, '\\$');
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}
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if (wrapper.node.name === 'noscript') return '';
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let open = `<${wrapper.node.name}`;
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(wrapper as ElementWrapper).attributes.forEach((attr: AttributeWrapper) => {
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open += ` ${fix_attribute_casing(attr.node.name)}${attr.stringify()}`
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});
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if (is_void(wrapper.node.name)) return open + '>';
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return `${open}>${wrapper.fragment.nodes.map(to_html).join('')}</${wrapper.node.name}>`;
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}
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if (renderer.options.dev) {
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const loc = renderer.locate(this.node.start);
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block.builders.hydrate.add_line(
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`@add_location(${this.var}, ${renderer.file_var}, ${loc.line}, ${loc.column}, ${this.node.start});`
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);
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}
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}
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get_render_statement() {
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const { name, namespace } = this.node;
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if (namespace === 'http://www.w3.org/2000/svg') {
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return `@svg_element("${name}")`;
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}
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if (namespace) {
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return `document.createElementNS("${namespace}", "${name}")`;
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}
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return `@element("${name}")`;
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}
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get_claim_statement(nodes: string) {
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const attributes = this.node.attributes
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.filter((attr: Node) => attr.type === 'Attribute')
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.map((attr: Node) => `${quote_name_if_necessary(attr.name)}: true`)
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.join(', ');
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const name = this.node.namespace
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? this.node.name
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: this.node.name.toUpperCase();
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return `@claim_element(${nodes}, "${name}", ${attributes
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? `{ ${attributes} }`
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: `{}`}, ${this.node.namespace === namespaces.svg ? true : false})`;
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}
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add_bindings(block: Block) {
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const { renderer } = this;
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if (this.bindings.length === 0) return;
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renderer.component.has_reactive_assignments = true;
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const lock = this.bindings.some(binding => binding.needs_lock) ?
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block.get_unique_name(`${this.var}_updating`) :
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null;
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if (lock) block.add_variable(lock, 'false');
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const groups = events
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.map(event => ({
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events: event.event_names,
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bindings: this.bindings
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.filter(binding => binding.node.name !== 'this')
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.filter(binding => event.filter(this.node, binding.node.name))
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}))
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.filter(group => group.bindings.length);
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groups.forEach(group => {
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const handler = renderer.component.get_unique_name(`${this.var}_${group.events.join('_')}_handler`);
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renderer.component.add_var({
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name: handler,
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internal: true,
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referenced: true
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});
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// TODO figure out how to handle locks
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const needs_lock = group.bindings.some(binding => binding.needs_lock);
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const dependencies = new Set();
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const contextual_dependencies = new Set();
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group.bindings.forEach(binding => {
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// TODO this is a mess
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add_to_set(dependencies, binding.get_dependencies());
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add_to_set(contextual_dependencies, binding.node.expression.contextual_dependencies);
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add_to_set(contextual_dependencies, binding.handler.contextual_dependencies);
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binding.render(block, lock);
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});
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// media bindings — awkward special case. The native timeupdate events
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// fire too infrequently, so we need to take matters into our
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// own hands
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let animation_frame;
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if (group.events[0] === 'timeupdate') {
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animation_frame = block.get_unique_name(`${this.var}_animationframe`);
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block.add_variable(animation_frame);
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}
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const has_local_function = contextual_dependencies.size > 0 || needs_lock || animation_frame;
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let callee;
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// TODO dry this out — similar code for event handlers and component bindings
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if (has_local_function) {
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// need to create a block-local function that calls an instance-level function
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block.builders.init.add_block(deindent`
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function ${handler}() {
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${animation_frame && deindent`
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cancelAnimationFrame(${animation_frame});
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if (!${this.var}.paused) ${animation_frame} = requestAnimationFrame(${handler});`}
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${needs_lock && `${lock} = true;`}
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ctx.${handler}.call(${this.var}${contextual_dependencies.size > 0 ? ', ctx' : ''});
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}
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`);
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callee = handler;
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} else {
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callee = `ctx.${handler}`;
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}
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this.renderer.component.partly_hoisted.push(deindent`
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function ${handler}(${contextual_dependencies.size > 0 ? `{ ${Array.from(contextual_dependencies).join(', ')} }` : ``}) {
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${group.bindings.map(b => b.handler.mutation)}
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${Array.from(dependencies).filter(dep => dep[0] !== '$').map(dep => `${this.renderer.component.invalidate(dep)};`)}
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}
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`);
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|
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group.events.forEach(name => {
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if (name === 'resize') {
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// special case
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const resize_listener = block.get_unique_name(`${this.var}_resize_listener`);
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block.add_variable(resize_listener);
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|
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block.builders.mount.add_line(
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`${resize_listener} = @add_resize_listener(${this.var}, ${callee}.bind(${this.var}));`
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);
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block.builders.destroy.add_line(
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`${resize_listener}.cancel();`
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);
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} else {
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block.event_listeners.push(
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`@listen(${this.var}, "${name}", ${callee})`
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);
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}
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});
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const some_initial_state_is_undefined = group.bindings
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.map(binding => `${binding.snippet} === void 0`)
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.join(' || ');
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if (this.node.name === 'select' || group.bindings.find(binding => binding.node.name === 'indeterminate' || binding.is_readonly_media_attribute())) {
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const callback = has_local_function ? handler : `() => ${callee}.call(${this.var})`;
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block.builders.hydrate.add_line(
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`if (${some_initial_state_is_undefined}) @add_render_callback(${callback});`
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);
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}
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|
|
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if (group.events[0] === 'resize') {
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block.builders.hydrate.add_line(
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`@add_render_callback(() => ${callee}.call(${this.var}));`
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);
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}
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});
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if (lock) {
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block.builders.update.add_line(`${lock} = false;`);
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}
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const this_binding = this.bindings.find(b => b.node.name === 'this');
|
|
if (this_binding) {
|
|
const name = renderer.component.get_unique_name(`${this.var}_binding`);
|
|
|
|
renderer.component.add_var({
|
|
name,
|
|
internal: true,
|
|
referenced: true
|
|
});
|
|
|
|
const { handler, object } = this_binding;
|
|
|
|
const args = [];
|
|
for (const arg of handler.contextual_dependencies) {
|
|
args.push(arg);
|
|
block.add_variable(arg, `ctx.${arg}`);
|
|
}
|
|
|
|
renderer.component.partly_hoisted.push(deindent`
|
|
function ${name}(${['$$node', 'check'].concat(args).join(', ')}) {
|
|
${handler.snippet ? `if ($$node || (!$$node && ${handler.snippet} === check)) ` : ''}${handler.mutation}
|
|
${renderer.component.invalidate(object)};
|
|
}
|
|
`);
|
|
|
|
block.builders.mount.add_line(`@add_binding_callback(() => ctx.${name}(${[this.var, 'null'].concat(args).join(', ')}));`);
|
|
block.builders.destroy.add_line(`ctx.${name}(${['null', this.var].concat(args).join(', ')});`);
|
|
block.builders.update.add_line(deindent`
|
|
if (changed.items) {
|
|
ctx.${name}(${['null', this.var].concat(args).join(', ')});
|
|
${args.map(a => `${a} = ctx.${a}`).join(', ')};
|
|
ctx.${name}(${[this.var, 'null'].concat(args).join(', ')});
|
|
}`
|
|
);
|
|
}
|
|
}
|
|
|
|
add_attributes(block: Block) {
|
|
if (this.node.attributes.find(attr => attr.type === 'Spread')) {
|
|
this.add_spread_attributes(block);
|
|
return;
|
|
}
|
|
|
|
this.attributes.forEach((attribute: Attribute) => {
|
|
if (attribute.node.name === 'class' && attribute.node.is_dynamic) {
|
|
this.class_dependencies.push(...attribute.node.dependencies);
|
|
}
|
|
attribute.render(block);
|
|
});
|
|
}
|
|
|
|
add_spread_attributes(block: Block) {
|
|
const levels = block.get_unique_name(`${this.var}_levels`);
|
|
const data = block.get_unique_name(`${this.var}_data`);
|
|
|
|
const initial_props = [];
|
|
const updates = [];
|
|
|
|
this.node.attributes
|
|
.filter(attr => attr.type === 'Attribute' || attr.type === 'Spread')
|
|
.forEach(attr => {
|
|
const condition = attr.dependencies.size > 0
|
|
? `(${[...attr.dependencies].map(d => `changed.${d}`).join(' || ')})`
|
|
: null;
|
|
|
|
if (attr.is_spread) {
|
|
const snippet = attr.expression.render(block);
|
|
|
|
initial_props.push(snippet);
|
|
|
|
updates.push(condition ? `${condition} && ${snippet}` : snippet);
|
|
} else {
|
|
const snippet = `{ ${quote_name_if_necessary(attr.name)}: ${attr.get_value(block)} }`;
|
|
initial_props.push(snippet);
|
|
|
|
updates.push(condition ? `${condition} && ${snippet}` : snippet);
|
|
}
|
|
});
|
|
|
|
block.builders.init.add_block(deindent`
|
|
var ${levels} = [
|
|
${initial_props.join(',\n')}
|
|
];
|
|
|
|
var ${data} = {};
|
|
for (var #i = 0; #i < ${levels}.length; #i += 1) {
|
|
${data} = @assign(${data}, ${levels}[#i]);
|
|
}
|
|
`);
|
|
|
|
block.builders.hydrate.add_line(
|
|
`@set_attributes(${this.var}, ${data});`
|
|
);
|
|
|
|
block.builders.update.add_block(deindent`
|
|
@set_attributes(${this.var}, @get_spread_update(${levels}, [
|
|
${updates.join(',\n')}
|
|
]));
|
|
`);
|
|
}
|
|
|
|
add_event_handlers(block: Block) {
|
|
add_event_handlers(block, this.var, this.node.handlers);
|
|
}
|
|
|
|
add_transitions(
|
|
block: Block
|
|
) {
|
|
const { intro, outro } = this.node;
|
|
if (!intro && !outro) return;
|
|
|
|
const { component } = this.renderer;
|
|
|
|
if (intro === outro) {
|
|
// bidirectional transition
|
|
const name = block.get_unique_name(`${this.var}_transition`);
|
|
const snippet = intro.expression
|
|
? intro.expression.render(block)
|
|
: '{}';
|
|
|
|
block.add_variable(name);
|
|
|
|
const fn = component.qualify(intro.name);
|
|
|
|
const intro_block = deindent`
|
|
@add_render_callback(() => {
|
|
if (!${name}) ${name} = @create_bidirectional_transition(${this.var}, ${fn}, ${snippet}, true);
|
|
${name}.run(1);
|
|
});
|
|
`;
|
|
|
|
const outro_block = deindent`
|
|
if (!${name}) ${name} = @create_bidirectional_transition(${this.var}, ${fn}, ${snippet}, false);
|
|
${name}.run(0);
|
|
`;
|
|
|
|
if (intro.is_local) {
|
|
block.builders.intro.add_block(deindent`
|
|
if (#local) {
|
|
${intro_block}
|
|
}
|
|
`);
|
|
|
|
block.builders.outro.add_block(deindent`
|
|
if (#local) {
|
|
${outro_block}
|
|
}
|
|
`);
|
|
} else {
|
|
block.builders.intro.add_block(intro_block);
|
|
block.builders.outro.add_block(outro_block);
|
|
}
|
|
|
|
block.builders.destroy.add_conditional('detaching', `if (${name}) ${name}.end();`);
|
|
}
|
|
|
|
else {
|
|
const intro_name = intro && block.get_unique_name(`${this.var}_intro`);
|
|
const outro_name = outro && block.get_unique_name(`${this.var}_outro`);
|
|
|
|
if (intro) {
|
|
block.add_variable(intro_name);
|
|
const snippet = intro.expression
|
|
? intro.expression.render(block)
|
|
: '{}';
|
|
|
|
const fn = component.qualify(intro.name);
|
|
|
|
let intro_block;
|
|
|
|
if (outro) {
|
|
intro_block = deindent`
|
|
@add_render_callback(() => {
|
|
if (${outro_name}) ${outro_name}.end(1);
|
|
if (!${intro_name}) ${intro_name} = @create_in_transition(${this.var}, ${fn}, ${snippet});
|
|
${intro_name}.start();
|
|
});
|
|
`;
|
|
|
|
block.builders.outro.add_line(`if (${intro_name}) ${intro_name}.invalidate();`);
|
|
} else {
|
|
intro_block = deindent`
|
|
if (!${intro_name}) {
|
|
@add_render_callback(() => {
|
|
${intro_name} = @create_in_transition(${this.var}, ${fn}, ${snippet});
|
|
${intro_name}.start();
|
|
});
|
|
}
|
|
`;
|
|
}
|
|
|
|
if (intro.is_local) {
|
|
intro_block = deindent`
|
|
if (#local) {
|
|
${intro_block}
|
|
}
|
|
`;
|
|
}
|
|
|
|
block.builders.intro.add_block(intro_block);
|
|
}
|
|
|
|
if (outro) {
|
|
block.add_variable(outro_name);
|
|
const snippet = outro.expression
|
|
? outro.expression.render(block)
|
|
: '{}';
|
|
|
|
const fn = component.qualify(outro.name);
|
|
|
|
if (!intro) {
|
|
block.builders.intro.add_block(deindent`
|
|
if (${outro_name}) ${outro_name}.end(1);
|
|
`);
|
|
}
|
|
|
|
// TODO hide elements that have outro'd (unless they belong to a still-outroing
|
|
// group) prior to their removal from the DOM
|
|
let outro_block = deindent`
|
|
${outro_name} = @create_out_transition(${this.var}, ${fn}, ${snippet});
|
|
`;
|
|
|
|
if (outro_block) {
|
|
outro_block = deindent`
|
|
if (#local) {
|
|
${outro_block}
|
|
}
|
|
`;
|
|
}
|
|
|
|
block.builders.outro.add_block(outro_block);
|
|
|
|
block.builders.destroy.add_conditional('detaching', `if (${outro_name}) ${outro_name}.end();`);
|
|
}
|
|
}
|
|
}
|
|
|
|
add_animation(block: Block) {
|
|
if (!this.node.animation) return;
|
|
|
|
const { component } = this.renderer;
|
|
|
|
const rect = block.get_unique_name('rect');
|
|
const stop_animation = block.get_unique_name('stop_animation');
|
|
|
|
block.add_variable(rect);
|
|
block.add_variable(stop_animation, '@noop');
|
|
|
|
block.builders.measure.add_block(deindent`
|
|
${rect} = ${this.var}.getBoundingClientRect();
|
|
`);
|
|
|
|
block.builders.fix.add_block(deindent`
|
|
@fix_position(${this.var});
|
|
${stop_animation}();
|
|
`);
|
|
|
|
const params = this.node.animation.expression ? this.node.animation.expression.render(block) : '{}';
|
|
|
|
const name = component.qualify(this.node.animation.name);
|
|
|
|
block.builders.animate.add_block(deindent`
|
|
${stop_animation}();
|
|
${stop_animation} = @create_animation(${this.var}, ${rect}, ${name}, ${params});
|
|
`);
|
|
}
|
|
|
|
add_actions(block: Block) {
|
|
add_actions(this.renderer.component, block, this.var, this.node.actions);
|
|
}
|
|
|
|
add_classes(block: Block) {
|
|
this.node.classes.forEach(class_directive => {
|
|
const { expression, name } = class_directive;
|
|
let snippet, dependencies;
|
|
if (expression) {
|
|
snippet = expression.render(block);
|
|
dependencies = expression.dependencies;
|
|
} else {
|
|
snippet = `${quote_prop_if_necessary(name)}`;
|
|
dependencies = new Set([name]);
|
|
}
|
|
const updater = `@toggle_class(${this.var}, "${name}", ${snippet});`;
|
|
|
|
block.builders.hydrate.add_line(updater);
|
|
|
|
if ((dependencies && dependencies.size > 0) || this.class_dependencies.length) {
|
|
const all_dependencies = this.class_dependencies.concat(...dependencies);
|
|
const deps = all_dependencies.map(dependency => `changed${quote_prop_if_necessary(dependency)}`).join(' || ');
|
|
const condition = all_dependencies.length > 1 ? `(${deps})` : deps;
|
|
|
|
block.builders.update.add_conditional(
|
|
condition,
|
|
updater
|
|
);
|
|
}
|
|
});
|
|
}
|
|
|
|
get_static_attribute_value(name: string) {
|
|
const attribute = this.node.attributes.find(
|
|
(attr: Attribute) => attr.type === 'Attribute' && attr.name.toLowerCase() === name
|
|
);
|
|
|
|
if (!attribute) return null;
|
|
|
|
if (attribute.is_true) return true;
|
|
if (attribute.chunks.length === 0) return '';
|
|
|
|
if (attribute.chunks.length === 1 && attribute.chunks[0].type === 'Text') {
|
|
return attribute.chunks[0].data;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
add_css_class(class_name = this.component.stylesheet.id) {
|
|
const class_attribute = this.attributes.find(a => a.name === 'class');
|
|
if (class_attribute && !class_attribute.is_true) {
|
|
if (class_attribute.chunks.length === 1 && class_attribute.chunks[0].type === 'Text') {
|
|
(class_attribute.chunks[0] as Text).data += ` ${class_name}`;
|
|
} else {
|
|
(class_attribute.chunks as Node[]).push(
|
|
new Text(this.component, this, this.scope, {
|
|
type: 'Text',
|
|
data: ` ${class_name}`
|
|
})
|
|
);
|
|
}
|
|
} else {
|
|
this.attributes.push(
|
|
new Attribute(this.component, this, this.scope, {
|
|
type: 'Attribute',
|
|
name: 'class',
|
|
value: [{ type: 'Text', data: class_name }]
|
|
})
|
|
);
|
|
}
|
|
}
|
|
}
|