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/*
This file is part of ethereum.js.
ethereum.js is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
ethereum.js 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with ethereum.js. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file qt.js
* @authors:
* Jeffrey Wilcke <jeff@ethdev.com>
* Marek Kotewicz <marek@ethdev.com>
* @date 2014
*/
/**
* QtProvider object prototype is implementing 'provider protocol'
* Should be used inside ethereum browser. It's compatible with cpp and go clients.
* It uses navigator.qt object to pass the messages to native bindings
*/
var QtProvider = function() {
this.handlers = [];
var self = this;
navigator.qt.onmessage = function (message) {
self.handlers.forEach(function (handler) {
handler.call(self, JSON.parse(message.data));
});
};
};
/// Prototype object method
/// Should be called when we want to send single api request to native bindings
/// Asynchronous
/// Response will be received by navigator.qt.onmessage method and passed to handlers
/// @param payload is inner message object
QtProvider.prototype.send = function(payload) {
navigator.qt.postMessage(JSON.stringify(payload));
};
/// Prototype object property
/// Should be used to set message handlers for this provider
Object.defineProperty(QtProvider.prototype, "onmessage", {
set: function(handler) {
this.handlers.push(handler);
}
});
module.exports = QtProvider;
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