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Filename : node_initializer.js
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import { kebabCase, debounce, wireDirectives } from '@/util'
import ModelAction from '@/action/model'
import DeferredModelAction from '@/action/deferred-model'
import MethodAction from '@/action/method'
import store from '@/Store'
import DOM from './dom/dom'

export default {
    initialize(el, component) {
        if (store.initialRenderIsFinished && el.tagName.toLowerCase() === 'script') {
            eval(el.innerHTML)
            return false
        }

        wireDirectives(el).all().forEach(directive => {
            switch (directive.type) {
                case 'init':
                    this.fireActionRightAway(el, directive, component)
                    break

                case 'model':
                    if (! directive.value) {
                        console.warn('Livewire: [wire:model] is missing a value.', el)
                        break
                    }

                    DOM.setInputValueFromModel(el, component)

                    this.attachModelListener(el, directive, component)
                    break

                default:
                    if (store.directives.has(directive.type)) {
                        store.directives.call(
                            directive.type,
                            el,
                            directive,
                            component
                        )
                    }

                    this.attachDomListener(el, directive, component)
                    break
            }
        })

        store.callHook('element.initialized', el, component)
    },

    fireActionRightAway(el, directive, component) {
        const method = directive.value ? directive.method : '$refresh'

        component.addAction(new MethodAction(method, directive.params, el))
    },

    attachModelListener(el, directive, component) {
        // This is used by morphdom: morphdom.js:391
        el.isLivewireModel = true

        const isLazy = directive.modifiers.includes('lazy')
        const debounceIf = (condition, callback, time) => {
            return condition
                ? component.modelSyncDebounce(callback, time)
                : callback
        }
        const hasDebounceModifier = directive.modifiers.includes('debounce')

        store.callHook('interceptWireModelAttachListener', directive, el, component)

        // File uploads are handled by UploadFiles.js.
        if (el.tagName.toLowerCase() === 'input' && el.type === 'file') return

        const event = el.tagName.toLowerCase() === 'select'
            || ['checkbox', 'radio'].includes(el.type)
            || directive.modifiers.includes('lazy') ? 'change' : 'input'

        // If it's a text input and not .lazy, debounce, otherwise fire immediately.
        let handler = debounceIf(hasDebounceModifier || (DOM.isTextInput(el) && !isLazy), e => {
            let model = directive.value
            let el = e.target

            let value = e instanceof CustomEvent
                // We have to check for typeof e.detail here for IE 11.
                && typeof e.detail != 'undefined'
                && typeof window.document.documentMode == 'undefined'
                    // With autofill in Safari, Safari triggers a custom event and assigns
                    // the value to e.target.value, so we need to check for that value as well.
                    ? e.detail ?? e.target.value
                    : DOM.valueFromInput(el, component)

            if (directive.modifiers.includes('defer')) {
                component.addAction(new DeferredModelAction(model, value, el))
            } else {
                component.addAction(new ModelAction(model, value, el))
            }
        }, directive.durationOr(150))

        el.addEventListener(event, handler)

        component.addListenerForTeardown(() => {
            el.removeEventListener(event, handler)
        })

        // Taken from: https://stackoverflow.com/questions/9847580/how-to-detect-safari-chrome-ie-firefox-and-opera-browser
        let isSafari = /^((?!chrome|android).)*safari/i.test(navigator.userAgent)

        // Safari is weird and doesn't properly fire input events when
        // a user "autofills" a wire:model(.lazy) field. So we are
        // firing them manually for assurance.
        isSafari && el.addEventListener('animationstart', e => {
            if (e.animationName !== 'livewireautofill') return

            e.target.dispatchEvent(new Event('change', { bubbles: true }))
            e.target.dispatchEvent(new Event('input', { bubbles: true }))
        })
    },

    attachDomListener(el, directive, component) {
        switch (directive.type) {
            case 'keydown':
            case 'keyup':
                this.attachListener(el, directive, component, e => {
                    // Detect system modifier key combinations if specified.
                    const systemKeyModifiers = [
                        'ctrl',
                        'shift',
                        'alt',
                        'meta',
                        'cmd',
                        'super',
                    ]
                    const selectedSystemKeyModifiers = systemKeyModifiers.filter(
                        key => directive.modifiers.includes(key)
                    )

                    if (selectedSystemKeyModifiers.length > 0) {
                        const selectedButNotPressedKeyModifiers = selectedSystemKeyModifiers.filter(
                            key => {
                                // Alias "cmd" and "super" to "meta"
                                if (key === 'cmd' || key === 'super')
                                    key = 'meta'

                                return !e[`${key}Key`]
                            }
                        )

                        if (selectedButNotPressedKeyModifiers.length > 0)
                            return false
                    }

		            // Handle spacebar
                    if (e.keyCode === 32 || (e.key === ' ' || e.key === 'Spacebar')) {
                        return directive.modifiers.includes('space')
                    }

                    // Strip 'debounce' modifier and time modifiers from modifiers list
                    let modifiers = directive.modifiers.filter(modifier => {
                        return (
                            !modifier.match(/^debounce$/) &&
                            !modifier.match(/^[0-9]+m?s$/)
                        )
                    })

                    // Only handle listener if no, or matching key modifiers are passed.
                    // It's important to check that e.key exists - OnePassword's extension does weird things.
                    return Boolean(modifiers.length === 0 || (e.key && modifiers.includes(kebabCase(e.key))))
                })
                break
            case 'click':
                this.attachListener(el, directive, component, e => {
                    // We only care about elements that have the .self modifier on them.
                    if (!directive.modifiers.includes('self')) return

                    // This ensures a listener is only run if the event originated
                    // on the elemenet that registered it (not children).
                    // This is useful for things like modal back-drop listeners.
                    return el.isSameNode(e.target)
                })
                break
            default:
                this.attachListener(el, directive, component)
                break
        }
    },

    attachListener(el, directive, component, callback) {
        if (directive.modifiers.includes('prefetch')) {
            el.addEventListener('mouseenter', () => {
                component.addPrefetchAction(
                    new MethodAction(directive.method, directive.params, el)
                )
            })
        }

        const event = directive.type
        const handler = e => {
            if (callback && callback(e) === false) {
                return
            }

            component.callAfterModelDebounce(() => {
                const el = e.target

                directive.setEventContext(e)

                // This is outside the conditional below so "wire:click.prevent" without
                // a value still prevents default.
                this.preventAndStop(e, directive.modifiers)
                const method = directive.method
                let params = directive.params

                if (
                    params.length === 0 &&
                    e instanceof CustomEvent &&
                    e.detail
                ) {
                    params.push(e.detail)
                }

                // Check for global event emission.
                if (method === '$emit') {
                    component.scopedListeners.call(...params)
                    store.emit(...params)
                    return
                }

                if (method === '$emitUp') {
                    store.emitUp(el, ...params)
                    return
                }

                if (method === '$emitSelf') {
                    store.emitSelf(component.id, ...params)
                    return
                }

                if (method === '$emitTo') {
                    store.emitTo(...params)
                    return
                }

                if (directive.value) {
                    component.addAction(new MethodAction(method, params, el))
                }
            })
        }

        const debounceIf = (condition, callback, time) => {
            return condition ? debounce(callback, time) : callback
        }

        const hasDebounceModifier = directive.modifiers.includes('debounce')
        const debouncedHandler = debounceIf(
            hasDebounceModifier,
            handler,
            directive.durationOr(150)
        )

        el.addEventListener(event, debouncedHandler)

        component.addListenerForTeardown(() => {
            el.removeEventListener(event, debouncedHandler)
        })
    },

    preventAndStop(event, modifiers) {
        modifiers.includes('prevent') && event.preventDefault()

        modifiers.includes('stop') && event.stopPropagation()
    },
}