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// Main Ethereum library
window.eth = {
prototype: Object(),
// Retrieve block
//
// Either supply a number or a string. Type is determent for the lookup method
// string - Retrieves the block by looking up the hash
// number - Retrieves the block by looking up the block number
getBlock: function(numberOrHash, cb) {
var func;
if(typeof numberOrHash == "string") {
func = "getBlockByHash";
} else {
func = "getBlockByNumber";
}
postData({call: func, args: [numberOrHash]}, cb);
},
// Create transaction
//
// Creates a transaction with the current account
// If no recipient is set, the Ethereum API will see it as a contract creation
transact: function(sec, recipient, value, gas, gasPrice, data, cb) {
postData({call: "transact", args: [sec, recipient, value, gas, gasPrice, data]}, cb);
},
create: function(sec, value, gas, gasPrice, init, body, cb) {
postData({call: "create", args: [sec, value, gas, gasPrice, init, body]}, cb);
},
getStorageAt: function(address, storageAddress, cb) {
postData({call: "getStorage", args: [address, storageAddress]}, cb);
},
getKey: function(cb) {
postData({call: "getKey"}, cb);
},
getBalanceAt: function(address, cb) {
postData({call: "getBalance", args: [address]}, cb);
},
watch: function(address, storageAddrOrCb, cb) {
var ev;
if(cb === undefined) {
cb = storageAddrOrCb;
storageAddrOrCb = "";
ev = "object:"+address;
} else {
ev = "storage:"+address+":"+storageAddrOrCb;
}
eth.on(ev, cb)
postData({call: "watch", args: [address, storageAddrOrCb]});
},
disconnect: function(address, storageAddrOrCb, cb) {
var ev;
if(cb === undefined) {
cb = storageAddrOrCb;
storageAddrOrCb = "";
ev = "object:"+address;
} else {
ev = "storage:"+address+":"+storageAddrOrCb;
}
eth.off(ev, cb)
postData({call: "disconnect", args: [address, storageAddrOrCb]});
},
set: function(props) {
postData({call: "set", args: props});
},
on: function(event, cb) {
if(eth._onCallbacks[event] === undefined) {
eth._onCallbacks[event] = [];
}
eth._onCallbacks[event].push(cb);
return this
},
off: function(event, cb) {
if(eth._onCallbacks[event] !== undefined) {
var callbacks = eth._onCallbacks[event];
for(var i = 0; i < callbacks.length; i++) {
if(callbacks[i] === cb) {
delete callbacks[i];
}
}
}
return this
},
trigger: function(event, data) {
var callbacks = eth._onCallbacks[event];
if(callbacks !== undefined) {
for(var i = 0; i < callbacks.length; i++) {
callbacks[i](data);
}
}
},
}
window.eth._callbacks = {}
window.eth._onCallbacks = {}
function debug(/**/) {
var args = arguments;
var msg = ""
for(var i = 0; i < args.length; i++){
if(typeof args[i] === "object") {
msg += " " + JSON.stringify(args[i])
} else {
msg += args[i]
}
}
document.getElementById("debug").innerHTML += "<br>" + msg
}
// Helper function for generating pseudo callbacks and sending data to the QML part of the application
function postData(data, cb) {
data._seed = Math.floor(Math.random() * 1000000)
if(cb) {
eth._callbacks[data._seed] = cb;
}
if(data.args === undefined) {
data.args = [];
}
navigator.qt.postMessage(JSON.stringify(data));
}
navigator.qt.onmessage = function(ev) {
var data = JSON.parse(ev.data)
if(data._event !== undefined) {
eth.trigger(data._event, data.data);
} else {
if(data._seed) {
var cb = eth._callbacks[data._seed];
if(cb) {
// Call the callback
cb(data.data);
// Remove the "trigger" callback
delete eth._callbacks[ev._seed];
}
}
}
}
window.eth._0 = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
String.prototype.pad = function(len) {
var bin = this.bin();
var l = bin.length;
if(l < 32) {
return eth._0.substr(0, 32 - bin.length) + bin;
}
return bin;
}
String.prototype.unpad = function() {
var i, l;
for(i = 0, l = this.length; i < l; i++) {
if(this[i] != "\0") {
return this.substr(i, this.length);
}
}
return this.substr(i, this.length);
}
String.prototype.bin = function() {
if(this.substr(0, 2) == "0x") {
return this.hex2bin();
} else if(/^\d+$/.test(this)) {
return this.num2bin()
}
// Otherwise we'll return the "String" object instead of an actual string
return this.substr(0, this.length)
}
String.prototype.unbin = function() {
var i, l, o = '';
for(i = 0, l = this.length; i < l; i++) {
var n = this.charCodeAt(i).toString(16);
o += n.length < 2 ? '0' + n : n;
}
return "0x" + o;
}
String.prototype.hex2bin = function() {
bytes = []
for(var i=2; i< this.length-1; i+=2){
bytes.push(parseInt(this.substr(i, 2), 16));
}
return String.fromCharCode.apply(String, bytes);
}
String.prototype.num2bin = function() {
return ("0x"+parseInt(this).toString(16)).bin()
}
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