63 lines
2.0 KiB
JavaScript
63 lines
2.0 KiB
JavaScript
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// This module monkey patches Page#showModal in order to be able to
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// access from the HMR proxy data passed to `showModal` in svelte-native.
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//
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// Data are stored in a opaque prop accessible with `getModalData`.
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//
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// It also switches the `closeCallback` option with a custom brewed one
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// in order to give the proxy control over when its own instance will be
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// destroyed.
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//
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// Obviously this method suffer from extreme coupling with the target code
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// in svelte-native. So it would be wise to recheck compatibility on SN
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// version upgrades.
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//
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// Relevant code is there (last checked version):
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//
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// https://github.com/halfnelson/svelte-native/blob/48fdc97d2eb4d3958cfcb4ff6cf5755a220829eb/src/dom/navigation.ts#L132
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//
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// FIXME should we override ViewBase#showModal instead?
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// eslint-disable-next-line import/no-unresolved
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import { Page } from '@nativescript/core'
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const prop =
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typeof Symbol !== 'undefined'
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? Symbol('hmr_svelte_native_modal')
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: '___HMR_SVELTE_NATIVE_MODAL___'
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const sup = Page.prototype.showModal
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let patched = false
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export const patchShowModal = () => {
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// guard: already patched
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if (patched) return
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patched = true
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Page.prototype.showModal = function(modalView, options) {
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const modalData = {
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originalOptions: options,
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closeCallback: options.closeCallback,
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}
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modalView[prop] = modalData
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// Proxies to a function that can be swapped on the fly by HMR proxy.
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//
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// The default is still to call the original closeCallback from svelte
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// navtive, which will destroy the modal view & component. This way, if
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// no HMR happens on the modal content, normal behaviour is preserved
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// without the proxy having any work to do.
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//
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const closeCallback = (...args) => {
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return modalData.closeCallback(...args)
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}
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const tamperedOptions = Object.assign({}, options, { closeCallback })
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return sup.call(this, modalView, tamperedOptions)
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}
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}
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export const getModalData = modalView => modalView[prop]
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