1 files changed, 149 insertions, 0 deletions
diff --git a/mist/assets/ext/html_messaging.js b/mist/assets/ext/html_messaging.js
new file mode 100644
index 000000000..cf6d72cfa
--- /dev/null
+++ b/mist/assets/ext/html_messaging.js
@@ -0,0 +1,149 @@
+// 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);