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IpcMain.cs
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using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using Newtonsoft.Json.Serialization;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
namespace ElectronNET.API
{
/// <summary>
/// Communicate asynchronously from the main process to renderer processes.
/// </summary>
public sealed class IpcMain
{
private static IpcMain _ipcMain;
internal IpcMain() { }
internal static IpcMain Instance
{
get
{
if(_ipcMain == null)
{
_ipcMain = new IpcMain();
}
return _ipcMain;
}
}
/// <summary>
/// Listens to channel, when a new message arrives listener would be called with
/// listener(event, args...).
/// </summary>
/// <param name="channel">Channelname.</param>
/// <param name="listener">Callback Method.</param>
public void On(string channel, Action<object> listener)
{
BridgeConnector.Socket.Emit("registerIpcMainChannel", channel);
BridgeConnector.Socket.On(channel, (args) =>
{
List<object> objectArray = FormatArguments(args);
if(objectArray.Count == 1)
{
listener(objectArray.First());
}
else
{
listener(objectArray);
}
});
}
private List<object> FormatArguments(object args)
{
List<object> objectArray = ((JArray)args).ToObject<object[]>().ToList();
for (int index = 0; index < objectArray.Count; index++)
{
var item = objectArray[index];
if (item == null)
{
objectArray.Remove(item);
}
}
return objectArray;
}
/// <summary>
/// Send a message to the renderer process synchronously via channel,
/// you can also send arbitrary arguments.
///
/// Note: Sending a synchronous message will block the whole renderer process,
/// unless you know what you are doing you should never use it.
/// </summary>
/// <param name="channel"></param>
/// <param name="listener"></param>
public void OnSync(string channel, Func<object, object> listener)
{
BridgeConnector.Socket.Emit("registerSyncIpcMainChannel", channel);
BridgeConnector.Socket.On(channel, (args) => {
List<object> objectArray = FormatArguments(args);
object parameter;
if (objectArray.Count == 1)
{
parameter = objectArray.First();
}
else
{
parameter = objectArray;
}
var result = listener(parameter);
BridgeConnector.Socket.Emit(channel + "Sync", result);
});
}
/// <summary>
/// Adds a one time listener method for the event. This listener is invoked only
/// the next time a message is sent to channel, after which it is removed.
/// </summary>
/// <param name="channel">Channelname.</param>
/// <param name="listener">Callback Method.</param>
public void Once(string channel, Action<object> listener)
{
BridgeConnector.Socket.Emit("registerOnceIpcMainChannel", channel);
BridgeConnector.Socket.On(channel, (args) =>
{
List<object> objectArray = FormatArguments(args);
if (objectArray.Count == 1)
{
listener(objectArray.First());
}
else
{
listener(objectArray);
}
});
}
/// <summary>
/// Removes listeners of the specified channel.
/// </summary>
/// <param name="channel">Channelname.</param>
public void RemoveAllListeners(string channel)
{
BridgeConnector.Socket.Emit("removeAllListenersIpcMainChannel", channel);
}
/// <summary>
/// Send a message to the renderer process asynchronously via channel, you can also send
/// arbitrary arguments. Arguments will be serialized in JSON internally and hence
/// no functions or prototype chain will be included. The renderer process handles it by
/// listening for channel with ipcRenderer module.
/// </summary>
/// <param name="browserWindow">BrowserWindow with channel.</param>
/// <param name="channel">Channelname.</param>
/// <param name="data">Arguments data.</param>
public void Send(BrowserWindow browserWindow, string channel, params object[] data)
{
List<JObject> jobjects = new List<JObject>();
List<JArray> jarrays = new List<JArray>();
List<Object> objects = new List<Object>();
foreach (var parameterObject in data)
{
if(parameterObject.GetType().IsArray || parameterObject.GetType().IsGenericType && parameterObject is IEnumerable)
{
jarrays.Add(JArray.FromObject(parameterObject, _jsonSerializer));
} else if(parameterObject.GetType().IsClass && !parameterObject.GetType().IsPrimitive && !(parameterObject is string))
{
jobjects.Add(JObject.FromObject(parameterObject, _jsonSerializer));
} else if(parameterObject.GetType().IsPrimitive || (parameterObject is string))
{
objects.Add(parameterObject);
}
}
if(jobjects.Count > 0 || jarrays.Count > 0)
{
BridgeConnector.Socket.Emit("sendToIpcRenderer", JObject.FromObject(browserWindow, _jsonSerializer), channel, jarrays.ToArray(), jobjects.ToArray(), objects.ToArray());
}
else
{
BridgeConnector.Socket.Emit("sendToIpcRenderer", JObject.FromObject(browserWindow, _jsonSerializer), channel, data);
}
}
private JsonSerializer _jsonSerializer = new JsonSerializer()
{
ContractResolver = new CamelCasePropertyNamesContractResolver(),
NullValueHandling = NullValueHandling.Ignore,
DefaultValueHandling = DefaultValueHandling.Ignore
};
}
}