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ipcjs

v0.9.0

Published

ipcjs (msg JavaScript Inter Process Communication) handles the communication between two windows on different domains

Downloads

11

Readme

ipcjs

Inter-Process-Communication (IPC) Library for JavaScript. This Library enables communicating between two windows on different domains. The communication can be bidirectional, so every window itself can be both a sender and a recipient. To make the communication between two windows work, both of them must include the same version of ipcjs.

ipcjs is based on please.js, a Request/Response based wrapper around the PostMessage API that makes use of jQuery Promises. please.js itself is based on top of jQuery and the jQuery Promise API.

Installation

Before start using ipcjs, you must make sure that both windows have ipcjs loaded and thus the global object IPC is available.

Install with npm

$ npm install ipcjs

or download source.

##Usage

###Sender

To send an event, just call the method sendEvent on the global object IPC.

	IPC.sendEvent(window.parent, 'ipc_infoText', text)

The method sendEvent has the following parameter:

  1. The target window (recipient)
  2. The name of the recipient's method as string
  3. [optional] further parameters (0-n), as many as the implementation of the given method expects

For example we have a window A that includes an iFrame B. Then the target window of A is the iFrame B ($('iframe').get(0).contentWindow) and the target window of the iFrame B is the window A (window.parent).

In case the sender tries to call a method the recipient has not implemented, an error is thrown from the ipcjs Library.

###Recipient

To receive an event, the recipient must register its implementation on the global object IPC.

	IPC.registerRecipient(this)

Furthermore the recipient has to implement the methods, that the sender wants to call.

	ipc_infoText (text) {
        // the implementation of the method
        // here u can give the information back in the application and convert it to the applications architecture
    },

All methods, the recipient provides for the communication with a sender, must start with the prefix ipc_. That is for security reason to avoid that everything the recipient implements can be called from a sender. Only through the prefix ipc_ the method is available for a sender. If the sender tries to call a method, that does not start with the prefix ipc_, an error is thrown from the ipcjs Library.