Re: GWT history handling library - give it a try

On Wednesday, March 28, 2012 4:42:07 PM UTC+2, Kostya Kulagin wrote:

> As for the general approach (from what I can read from the wiki pages), I
> don't think it really "works". Do you really want to save the open/close
> state of each tree item in the browser's history? Navigating the app would
> quickly become a nightmare. URLs are for navigation, not about application
> state. This is why the HTML5 History API provides a specific argument in
> pushState() to store some state independently of the URL: there are things
> that you want to keep around as long as the app is "running" but that don't
> need to be carried along in the URL if you bookmark it or copy/paste it to
> a mail or IM.
> As for combining the state of several components into the URL (as the YUI
> Library provides, for instance), that makes ugly URLs that don't carry any
> "real" meaning; not quite "Cool URIs" [3,4].
> URLs are for navigation, and GWT provides a cool way of handling it for
> quite some time now: Places [5] (and if you ask me, you should use
> Activities too, but that doesn't fit everyone, so feel free to use GWTP,
> Mvp4g or whatever)
>
Again good points, again thank you.
Places are intended to descibe set of components on page but not their
(components) state.

No. Activities are a set of "components" on the page. A Place, by definition, describes the "location" within the app, which you can interpret as being the "state" of the app, thus the "state" of the activities (it's rather the other way around though: you navigate to some place, and activities will construct their state from the current place)

Have a look there for more details: http://tbroyer.posterous.com/gwt-21-places, http://tbroyer.posterous.com/gwt-21-places-part-ii and then tbroyer.posterous.com/gwt-21-activities

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