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// The magic return variable. The magic return variable will be set during the execution of the QML call.
(function(window) {
function message(type, data) {
document.title = JSON.stringify({type: type, data: data});
return window.____returnData;
}
function isPromise(o) {
return typeof o === "object" && o.then
}
window.eth = {
_callbacks: {},
_onCallbacks: {},
prototype: Object(),
coinbase: function() {
return new Promise(function(resolve, reject) {
postData({call: "getCoinBase"}, function(coinbase) {
resolve(coinbase);
});
});
},
block: function(numberOrHash) {
return new Promise(function(resolve, reject) {
var func;
if(typeof numberOrHash == "string") {
func = "getBlockByHash";
} else {
func = "getBlockByNumber";
}
postData({call: func, args: [numberOrHash]}, function(block) {
if(block)
resolve(block);
else
reject("not found");
});
});
},
transact: function(params) {
if(params === undefined) {
params = {};
}
if(params.endowment !== undefined)
params.value = params.endowment;
if(params.code !== undefined)
params.data = params.code;
var promises = []
if(isPromise(params.to)) {
promises.push(params.to.then(function(_to) { params.to = _to; }));
}
if(isPromise(params.from)) {
promises.push(params.from.then(function(_from) { params.from = _from; }));
}
if(isPromise(params.data)) {
promises.push(params.data.then(function(_code) { params.data = _code; }));
} else {
if(typeof params.data === "object") {
data = "";
for(var i = 0; i < params.data.length; i++) {
data += params.data[i]
}
} else {
data = params.data;
}
}
// Make sure everything is string
var fields = ["value", "gas", "gasPrice"];
for(var i = 0; i < fields.length; i++) {
if(params[fields[i]] === undefined) {
params[fields[i]] = "";
}
params[fields[i]] = params[fields[i]].toString();
}
// Load promises then call the last "transact".
return Q.all(promises).then(function() {
return new Promise(function(resolve, reject) {
postData({call: "transact", args: params}, function(data) {
if(data[1])
reject(data[0]);
else
resolve(data[0]);
});
});
})
},
compile: function(code) {
return new Promise(function(resolve, reject) {
postData({call: "compile", args: [code]}, function(data) {
if(data[1])
reject(data[0]);
else
resolve(data[0]);
});
});
},
key: function() {
return new Promise(function(resolve, reject) {
postData({call: "getKey"}, function(k) {
resolve(k);
});
});
}
};
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) {
cb.call(this, data.data)
// Remove the "trigger" callback
delete eth._callbacks[ev._seed];
}
}
}
}
})(this);
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