Fix #4025: add user setting to keep the view mode.

[zyhfish]

No description provided.

[sbwalker]

Interactive render mode supports the ability to stay in Edit Mode by utilizing PageState - which is scoped to the user session. Static render mode is stateless and therefore needs an alternative for maintaining this information.

In reviewing this PR, it appears to be using both cookies and UserSettings. In general I am not in favor of using cookies - especially the way this is implemented where it forces a new cookie for both authenticated and non-authenticated users. EditMode is only applicable to authenticated users so the state should only be managed for that scenario.

It seems like this could be simplified...

• Based on a single UserSetting item named "EditModePageId"
• When a user clicks the button to toggle Edit Mode it will either set the UserSetting value to PageState.Page.PageId or ""
• The SiteRouter can reference PageState.User.Settings("EditModePageId") and if it matches PageState.Page.PageId then set PageState.EditMode accordingly, and if it does not match then set the UserSetting value to ""

[zyhfish]

Hi @sbwalker , thx so much for the review, code is updated.

[sbwalker]

@zyhfish this PR is still calling SettingService.GetUserSettingsAsync(user.UserId) in the SiteRouter which will affect performance and should be using user.Settings() since it already exists. I can merge this PR and make some final adjustments.

[zyhfish]

Hi @sbwalker , thx so much for the refactoring.