March 16th, 2018

In this developer's journal of Steemfiles:

• Using History in Javascript

Using History in Javascript

Steemfiles is getting some upgrades. You will be able to use the forward and back buttons in order to move within the single webpage.

So when the webpage first opens up I use replace state in order to put information for working with the back button handler:

    window.history.replaceState({'file': null, 'pane': 'explanation_item'}, '', document.location.pathname + document.location.search + document.location.hash);

Then I install the back button handler

    window.onpopstate = function(event) {
        console.log("Poping State:  location: " + document.location + ", state: " + JSON.stringify(event.state));
        console.log(event.state);
        try {
            switch_pane_with_state(event.state['pane'], false);
        } catch (e) {
            switch_pane_with_state('explanation_item', false);
        }
    };    

Finally when shifting between the Explantion, Upload, Gallery, Contact, or Login sections I use pushState:

         if (with_state)
             window.history.pushState({'file': null, 'pane': target_el_id}, '', '/cgi-bin/index.cgi');

One word of caution here. Be careful not to pushstate while being called by the back button handler is being called! If you do that, you will find back works once and then just does nothing. It's easy to do. You might be calling functions from inside functions. Be careful.

Previous Journal Entries:

• March 15th Developing Keybox, a signer, and a broadcaster
• March 14th (Working on a new Wallet
• March 13th (importance of source control, showing Public Keys, Politics Utopian)
• March 12th (keyring package for python) listing)
• March 10th (Keybox full working source code listing)
• March 9th
• March 8th

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See also

• My new voting declaration
• Bittrex not releasing people's funds
• I am Leprechaun