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// 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));
}
// 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
createTx: function(recipient, value, gas, gasPrice, data, cb) {
postData({call: "createTx", args: [recipient, value, gas, gasPrice, data]}, cb);
},
getStorage: function(address, storageAddress, cb) {
postData({call: "getStorage", args: [address, storageAddress]}, cb);
},
getKey: function(cb) {
postData({call: "getKey"}, cb);
},
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
}
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];
}
}
}
}
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