Observe localStorage changes

[xpert13]

Hello.

I need to save all localStorage changes to my own database. is it any way to observe all changes of the localStorage? (Something line OnCanSaveCookie for cookies)

[salvadordf]

Hi,

Perhaps you can do that with the DevTools methods and events but I haven't tried it.

Try the "Storage Domain" and "DOMStorage Domain" methods and events :
https://chromedevtools.github.io/devtoo ... t/Storage/
https://chromedevtools.github.io/devtoo ... OMStorage/

[xpert13]

How can I use DevTools methods and events in CEF4Delphi? I found it in DevTools but I don't understand how can I use this events in my code.

[dilfich]

How can I use DevTools methods and events in CEF4Delphi? I found it in DevTools but I don't understand how can I use this events in my code.

Look in the sources for methods for clearing the cache \ storage.

Code: Select all

Chromium1.ExecuteDevToolsMethod(0, 'Network.clearBrowserCache', nil);

[salvadordf]

As dilfich said, there are some code examples in TChromiumCore and also in some demos like DOMVisitor or MiniBrowser.

In this case I suppose you would have to do this for the "Storage Domain" :

• Call TChromium.ExecuteDevToolsMethod with a "Storage.trackCacheStorageForOrigin" method parameter and the origin you wish to track.
  https://chromedevtools.github.io/devtoo ... eForOrigin
• Implement TChromium.OnDevToolsEvent to handle the "Storage.cacheStorageContentUpdated" event.

For the "DOMStorage Domain" you would have to :

• Call TChromium.ExecuteDevToolsMethod with a "DOMStorage.enable" parameter.
• Implement TChromium.OnDevToolsEvent to handle all the "DOMStorage Domain" events : DOMStorage.domStorageItemAdded, DOMStorage.domStorageItemRemoved, DOMStorage.domStorageItemsCleared, DOMStorage.domStorageItemUpdated.

[xpert13]

Thank you guys! It's what I was looking for.