path: root/cmd/mist/assets/ext/ethereum.js

// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
// MA 02110-1301  USA

// Main Ethereum library
window.eth = {
    prototype: Object(),
    _callbacks: {},
    _onCallbacks: {},

    test: function() {
        var t = undefined;
    postData({call: "test"})
        navigator.qt.onmessage = function(d) {console.log("onmessage called"); t = d; }
        for(;;) {
            if(t !== undefined) {
                return t
            }
        }
    },

    mutan: function(code, cb) {
        postData({call: "mutan", args: [code]}, cb)
    },

    toHex: function(str) {
        var hex = "";
        for(var i = 0; i < str.length; i++) {
            var n = str.charCodeAt(i).toString(16);
            hex += n.length < 2 ? '0' + n : n;
        }

        return hex;
    },

    toAscii: function(hex) {
        // Find termination
        var str = "";
        var i = 0, l = hex.length;
        for(; i < l; i+=2) {
            var code = hex.charCodeAt(i)
            if(code == 0) {
                break;
            }

            str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
        }

        return str;
    },

    fromAscii: function(str, pad) {
        if(pad === undefined) {
            pad = 32
        }

        var hex = this.toHex(str);

        while(hex.length < pad*2)
            hex += "00";

        return hex
    },


    // 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
    //
    // Transact between two state objects
    transact: function(params, cb) {
        if(params === undefined) {
            params = {};
        }

        if(params.endowment !== undefined)
            params.value = params.endowment;
        if(params.code !== undefined)
            params.data = params.code;

        // Make sure everything is string
        var fields = ["to", "from", "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();
        }

        var data;
        if(typeof params.data === "object") {
            data = "";
            for(var i = 0; i < params.data.length; i++) {
                data += params.data[i]
            }
        } else {
            data = params.data;
        }

        postData({call: "transact", args: [params.from, params.to, params.value, params.gas, params.gasPrice, "0x"+data]}, cb);
    },

    getMessages: function(filter, cb) {
        postData({call: "messages", args: [filter]}, cb);
    },

    getStorageAt: function(address, storageAddress, cb) {
        postData({call: "getStorage", args: [address, storageAddress]}, cb);
    },

    getEachStorageAt: function(address, cb){
        postData({call: "getEachStorage", args: [address]}, cb);
    },

    getKey: function(cb) {
        postData({call: "getKey"}, cb);
    },

    getTxCountAt: function(address, cb) {
        postData({call: "getTxCountAt", args: [address]}, cb);
    },
    getIsMining: function(cb){
        postData({call: "getIsMining"}, cb)
    },
    getIsListening: function(cb){
        postData({call: "getIsListening"}, cb)
    },
    getCoinBase: function(cb){
        postData({call: "getCoinBase"}, cb);
    },
    getPeerCount: function(cb){
        postData({call: "getPeerCount"}, cb);
    },
    getBalanceAt: function(address, cb) {
        postData({call: "getBalance", args: [address]}, cb);
    },
    getTransactionsFor: function(address, cb) {
        postData({call: "getTransactionsFor", args: [address]}, cb);
    },

    getSecretToAddress: function(sec, cb) {
        postData({call: "getSecretToAddress", args: [sec]}, 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]});
    },
    */

       watch: function(options) {
           var filter = new Filter(options);
           filter.number = newWatchNum().toString()

           postData({call: "watch", args: [options, filter.number]})

           return filter;
       },

    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++) {
                // Figure out whether the returned data was an array
                // array means multiple return arguments (multiple params)
                if(data instanceof Array) {
                    callbacks[i].apply(this, data);
                } else {
                    callbacks[i].call(this, data);
                }
            }
        }
    },
}


var Filter = function(options) {
    this.options = options;
};
Filter.prototype.changed = function(callback) {
    // Register the watched:<number>. Qml will call the appropriate event if anything
    // interesting happens in the land of Go.
    eth.on("watched:"+this.number, callback)
}
Filter.prototype.getMessages = function(cb) {
    return eth.getMessages(this.options, cb)
}

var watchNum = 0;
function newWatchNum() {
    return watchNum++;
}

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];
            }
        }
    }
}

eth.on("chain:changed", function() {
})

eth.on("messages", { /* filters */}, function(messages){
})

eth.on("pending:changed", function() {
})