identicon.js

/**
Template Controllers

@module Templates
*/

/**
Return the user identity icon

@class [template] dapp_identicon
@constructor
*/

/**
The cached identicons

@property cache
*/
var cache = {};

Template['dapp_identicon_iron'].helpers({
    /**
    Make sure the identity is lowercased

    @method (identity)
    */
    'identity': function(identity){
        return (_.isString(this.identity)) ? this.identity.toLowerCase() : this.identity;
    },
    /**
    Return the cached or generated identicon

    @method (identiconData)
    */
    'identiconData': function(identity){
        // remove items if the cache is larger than 50 entries
        if(_.size(cache) > 100) {
            delete cache[Object.keys(cache)[0]];
        }

        return cache['ID_'+ identity] || (cache['ID_'+ identity] = hqx(hqx(blockies.create({
            seed: identity,
            size: 8,
            scale: 1
        }), 4),4).toDataURL());

    },
    /**
    Return the cached or generated identicon

    @method (identiconDataPixel)
    */
    'identiconDataPixel': function(identity){
        return cache['IDP_'+ identity] || (cache['IDP_'+ identity] = blockies.create({
            seed: identity,
            size: 8,
            scale: 8
        }).toDataURL());

    },
    /**
    Get the correct text, if TAPi18n is available.

    @method i18nText
    */
    'i18nTextIcon': function(){
        if(typeof TAPi18n === 'undefined' || TAPi18n.__('elements.identiconHelper') == 'elements.identiconHelper') {
            return "This is a security icon, if there's any change on the address the resulting icon should be a completelly different one";
        } else {
            return TAPi18n.__('elements.identiconHelper');
        }
    }
});