This implements a dream of one day being able to listen for changes in a settings to react to them, regardless of which device actually changed the setting. The use case for this kind of thing is extremely limited, but when it is needed it should be more than powerful enough.
Fixes https://github.com/vector-im/riot-web/issues/6435
This is done through an on-the-fly inverter for the settings. All the settings changed are boolean values, so this should be more than safe to just let happen throughout the SettingsStore. Typically a change like this would be done in the individual handlers (similar to how setting names are remapped to different properties or even different storage locations on the fly), however doing that for this many settings would be a huge nightmare and involve changing *all* the layers. By putting a global "invert this" flag on the setting, we can get away with doing the inversion as the last possible step during a read (or write).
To speed up calculations of the default values, we cache all the inverted values into a lookup table similar to how we represent the defaults already. Without this, the DefaultHandler would need to iterate the setting list and invert the values, slowing things down over time. We invert the value up front so we can keep the generic inversion logic without checking the level ahead of time. It is fully intended that a default value represents the new setting name, not the legacy name.
This commit also includes a debugger for settings because it was hard to visualize what the SettingsStore was doing during development. Some added information is included as it may be helpful for when someone has a problem with their settings and we need to debug it. Typically the debugger would be run in conjunction with `mxSendRageshake`: `mxSettingsStore.debugSetting('showJoinLeaves') && mxSendRageshake('Debugging showJoinLeaves setting')`.
This is to make the "Enable desktop notifications" checkbox accurately reflect the user's preference. The device-level setting is still respected.
Signed-off-by: Travis Ralston <travpc@gmail.com>
This shouldn't currently be causing problems, but will in teh future. The bug can be exposed by having a setting where the level order is completely reversed, therefore causing LEVEL_ORDER[0] to actually be the most generic, not the most specific. Instead, we'll pull in the setting's level order and fallback to LEVEL_ORDER, therefore requesting the most specific value.
Signed-off-by: Travis Ralston <travpc@gmail.com>
Known issues at this point:
* The room-level setting accepts the current user's default, which is wrong
* The checkboxes on RoomSettings are not independent
* The checkboxes in RoomSettings need some layout fixes
Signed-off-by: Travis Ralston <travpc@gmail.com>
This does away with the room- and account-style settings, and just replaces them with `supportedLevels`. The handlers have also been moved out to be in better support of the other options, like SdkConfig and per-room-per-device.
Signed-off-by: Travis Ralston <travpc@gmail.com>
