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feat: standalone presenter mode (#552)
* feat: use BroadcastChannel instead of server in static build * feat: sync drawings while using static build * refactor: refactor shared and drawing states * feat: manage drawing persist mode * fix: use persist mode only for drawings
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,15 +1,15 @@ | ||
| <script setup lang="ts"> | ||
| import { serverState } from '../env' | ||
| import { sharedState } from '../state/shared' | ||
| </script> | ||
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|
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| <template> | ||
| <div | ||
| v-if="serverState.cursor" | ||
| v-if="sharedState.cursor" | ||
| class="absolute top-0 left-0 right-0 bottom-0 pointer-events-none text-xl" | ||
| > | ||
| <ph:cursor-fill | ||
| class="absolute" | ||
| :style="{ left: `${serverState.cursor.x}%`, top: `${serverState.cursor.y}%` }" | ||
| :style="{ left: `${sharedState.cursor.x}%`, top: `${sharedState.cursor.y}%` }" | ||
| /> | ||
| </div> | ||
| </template> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| import serverDrawingState from 'server-reactive:drawings?diff' | ||
| import { createSyncState } from './syncState' | ||
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| export type DrawingsState = Record<number, string | undefined> | ||
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| const { init, onPatch, patch, state } = createSyncState<DrawingsState>(serverDrawingState, {}, __SLIDEV_FEATURE_DRAWINGS_PERSIST__) | ||
| export { init as initDrawingState, onPatch, patch, state as drawingState } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| import serverState from 'server-reactive:nav' | ||
| import { createSyncState } from './syncState' | ||
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| export interface SharedState { | ||
| page: number | ||
| clicks: number | ||
| cursor?: { | ||
| x: number | ||
| y: number | ||
| } | ||
| } | ||
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| const { init, onPatch, patch, state } = createSyncState<SharedState>(serverState, { | ||
| page: 1, | ||
| clicks: 0, | ||
| }) | ||
| export { init as initSharedState, onPatch, patch, state as sharedState } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| import { reactive, toRaw, watch } from 'vue' | ||
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| export function createSyncState<State extends object>(serverState: State, defaultState: State, persist = false) { | ||
| const onPatchCallbacks: ((state: State) => void)[] = [] | ||
| let patching = false | ||
| let updating = false | ||
| let patchingTimeout: NodeJS.Timeout | ||
| let updatingTimeout: NodeJS.Timeout | ||
|
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| const state = __DEV__ | ||
| ? reactive<State>(serverState) as State | ||
| : reactive<State>(defaultState) as State | ||
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| function onPatch(fn: (state: State) => void) { | ||
| onPatchCallbacks.push(fn) | ||
| } | ||
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| function patch<K extends keyof State>(key: K, value: State[K]) { | ||
| clearTimeout(patchingTimeout) | ||
| patching = true | ||
| state[key] = value | ||
| patchingTimeout = setTimeout(() => patching = false, 0) | ||
| } | ||
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| function onUpdate(patch: Partial<State>) { | ||
| if (!patching) { | ||
| clearTimeout(updatingTimeout) | ||
| updating = true | ||
| Object.entries(patch).forEach(([key, value]) => { | ||
| state[key as keyof State] = value as State[keyof State] | ||
| }) | ||
| updatingTimeout = setTimeout(() => updating = false, 0) | ||
| } | ||
| } | ||
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| function init(channelKey: string) { | ||
| let stateChannel: BroadcastChannel | ||
| if (!__DEV__ && !persist) { | ||
| stateChannel = new BroadcastChannel(channelKey) | ||
| stateChannel.addEventListener('message', (event: MessageEvent<Partial<State>>) => onUpdate(event.data)) | ||
| } | ||
| else if (!__DEV__ && persist) { | ||
| window.addEventListener('storage', (event) => { | ||
| if (event && event.key === channelKey && event.newValue) | ||
| onUpdate(JSON.parse(event.newValue) as Partial<State>) | ||
| }) | ||
| } | ||
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| function onDrawingStateChanged() { | ||
| if (!persist && stateChannel && !updating) | ||
| stateChannel.postMessage(toRaw(state)) | ||
| else if (persist && !updating) | ||
| window.localStorage.setItem(channelKey, JSON.stringify(state)) | ||
| if (!patching) | ||
| onPatchCallbacks.forEach((fn: (state: State) => void) => fn(state)) | ||
| } | ||
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| watch(state, onDrawingStateChanged, { deep: true }) | ||
| if (!__DEV__ && persist) { | ||
| const serialzedState = window.localStorage.getItem(channelKey) | ||
| if (serialzedState) | ||
| onUpdate(JSON.parse(serialzedState) as Partial<State>) | ||
| } | ||
| } | ||
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| return { init, onPatch, patch, state } | ||
| } |