88 lines
		
	
	
	
		
			1.9 KiB
			
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			88 lines
		
	
	
	
		
			1.9 KiB
			
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
const getStorage = (storageType) => {
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  const data = window.localStorage.getItem(`__chrome.storage.${storageType}__`)
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  if (data != null) {
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    return JSON.parse(data)
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  } else {
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    return {}
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  }
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}
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const setStorage = (storageType, storage) => {
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  const json = JSON.stringify(storage)
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  window.localStorage.setItem(`__chrome.storage.${storageType}__`, json)
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}
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const scheduleCallback = (items, callback) => {
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  setTimeout(function () {
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    callback(items)
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  })
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}
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const getStorageManager = (storageType) => {
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  return {
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    get (keys, callback) {
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      const storage = getStorage(storageType)
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      if (keys == null) return scheduleCallback(storage, callback)
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      let defaults = {}
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      switch (typeof keys) {
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        case 'string':
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          keys = [keys]
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          break
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        case 'object':
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          if (!Array.isArray(keys)) {
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            defaults = keys
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            keys = Object.keys(keys)
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          }
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          break
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      }
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      if (keys.length === 0) return scheduleCallback({}, callback)
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      let items = {}
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      keys.forEach(function (key) {
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        var value = storage[key]
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        if (value == null) value = defaults[key]
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        items[key] = value
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      })
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      scheduleCallback(items, callback)
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    },
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    set (items, callback) {
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      const storage = getStorage(storageType)
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      Object.keys(items).forEach(function (name) {
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        storage[name] = items[name]
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      })
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      setStorage(storageType, storage)
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      setTimeout(callback)
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    },
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    remove (keys, callback) {
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      const storage = getStorage(storageType)
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      if (!Array.isArray(keys)) {
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        keys = [keys]
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      }
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      keys.forEach(function (key) {
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        delete storage[key]
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      })
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      setStorage(storageType, storage)
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      setTimeout(callback)
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    },
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    clear (callback) {
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      setStorage(storageType, {})
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      setTimeout(callback)
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    }
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  }
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}
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module.exports = {
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  sync: getStorageManager('sync'),
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  local: getStorageManager('local')
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}
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