116 lines
2.7 KiB
JavaScript
116 lines
2.7 KiB
JavaScript
// Helper function for generating pseudo callbacks and sending data to the QML part of the application
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function postData(data, cb) {
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data._seed = Math.floor(Math.random() * 1000000)
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if(cb) {
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eth._callbacks[data._seed] = cb;
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}
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if(data.args === undefined) {
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data.args = [];
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}
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navigator.qt.postMessage(JSON.stringify(data));
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}
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// Main Ethereum library
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window.eth = {
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prototype: Object(),
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// Retrieve block
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//
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// Either supply a number or a string. Type is determent for the lookup method
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// string - Retrieves the block by looking up the hash
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// number - Retrieves the block by looking up the block number
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getBlock: function(numberOrHash, cb) {
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var func;
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if(typeof numberOrHash == "string") {
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func = "getBlockByHash";
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} else {
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func = "getBlockByNumber";
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}
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postData({call: func, args: [numberOrHash]}, cb);
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},
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// Create transaction
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//
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// Creates a transaction with the current account
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// If no recipient is set, the Ethereum API will see it as a contract creation
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createTx: function(recipient, value, gas, gasPrice, data, cb) {
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postData({call: "createTx", args: [recipient, value, gas, gasPrice, data]}, cb);
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},
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getStorage: function(address, storageAddress, cb) {
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postData({call: "getStorage", args: [address, storageAddress]}, cb);
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},
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getKey: function(cb) {
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postData({call: "getKey"}, cb);
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},
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on: function(event, cb) {
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if(eth._onCallbacks[event] === undefined) {
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eth._onCallbacks[event] = [];
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}
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eth._onCallbacks[event].push(cb);
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return this
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},
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off: function(event, cb) {
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if(eth._onCallbacks[event] !== undefined) {
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var callbacks = eth._onCallbacks[event];
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for(var i = 0; i < callbacks.length; i++) {
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if(callbacks[i] === cb) {
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delete callbacks[i];
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}
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}
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}
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return this
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},
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trigger: function(event, data) {
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var callbacks = eth._onCallbacks[event];
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if(callbacks !== undefined) {
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for(var i = 0; i < callbacks.length; i++) {
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callbacks[i](data);
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}
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}
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},
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}
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window.eth._callbacks = {}
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window.eth._onCallbacks = {}
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function debug(/**/) {
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var args = arguments;
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var msg = ""
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for(var i = 0; i < args.length; i++){
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if(typeof args[i] == "object") {
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msg += " " + JSON.stringify(args[i])
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} else {
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msg += args[i]
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}
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}
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document.getElementById("debug").innerHTML += "<br>" + msg
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}
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navigator.qt.onmessage = function(ev) {
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var data = JSON.parse(ev.data)
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if(data._event !== undefined) {
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eth.trigger(data._event, data.data);
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} else {
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if(data._seed) {
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var cb = eth._callbacks[data._seed];
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if(cb) {
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// Call the callback
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cb(data.data);
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// Remove the "trigger" callback
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delete eth._callbacks[ev._seed];
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}
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}
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}
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}
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