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Use a global WatchManager for settings

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Fixes https://github.com/vector-im/riot-web/issues/8936

Watchers are now managed by the SettingsStore itself through a global/default watch manager. As per the included documentation, the watch manager dispatches updates to callbacks which are redirected by the SettingsStore for consumer safety.
This commit is contained in:
Travis Ralston 2019-02-26 12:43:10 -07:00
parent 426bdafe22
commit 93673eff12
13 changed files with 111 additions and 174 deletions
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23
src/settings/handlers/SettingsHandler.js
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@ -69,27 +69,4 @@ export default class SettingsHandler {
isSupported() {
return false;
}
/**
* Watches for a setting change within this handler. The caller should preserve
* a reference to the callback so that it may be unwatched. The caller should
* additionally provide a unique callback for multiple watchers on the same setting.
* @param {string} settingName The setting name to watch for changes in.
* @param {String} roomId The room ID to watch for changes in.
* @param {function} cb A function taking two arguments: the room ID the setting changed
* in and the new value for the setting at this level in the given room.
*/
watchSetting(settingName, roomId, cb) {
throw new Error("Invalid operation: watchSetting was not overridden");
}
/**
* Unwatches a previously watched setting. If the callback is not associated with
* a watcher, this is a no-op.
* @param {function} cb A callback function previously supplied to watchSetting
* which should no longer be used.
*/
unwatchSetting(cb) {
throw new Error("Invalid operation: unwatchSetting was not overridden");
}
}