public bool AddLocalPlugin(object pluginObject)
{
var plugin = pluginObject as JavaScriptPlugin;
if (plugin == null)
{
plugin = JavaScriptPlugin.CreateFromObject(_managerProcess, pluginObject);
if (plugin == null)
{
Logger.Error("Failed to wrap unknown plugin type");
return(false);
}
}
if (!_localPluginsById.TryAdd(plugin.Descriptor.PluginId, plugin))
{
Logger.Warn("Attempt to add a duplicate plugin");
return(false);
}
if (plugin.IsDynamic)
{
plugin.DynamicPluginDisposed += DynamicPluginDisposed;
}
Logger.Info("Local plugin added successfully: " + plugin.Descriptor.PluginId);
return(true);
}
public void RemoveEventListener(JavaScriptPlugin targetPlugin, string eventName,
IV8Callback callback)
{
Logger.Info("RemoveEventListener Local Plugin {0} Event {1}", targetPlugin.Descriptor.PluginId, eventName);
if (!EnsureOnRendererThread())
{
return;
}
try
{
var info = (LocalRenderCallInfo)_pendingCallbacks.Remove(callback.Identifier);
info.Dispose();
targetPlugin.RemoveEventListener(eventName, info);
}
catch (Exception exception)
{
Logger.Error("RemoveEventListener Failed Local Plugin {0} Event {1}: {2}",
targetPlugin.Descriptor.PluginId,
eventName,
exception);
}
}
private void OnPluginRemoved(JavaScriptPlugin handler)
{
if (handler == null)
{
return;
}
// Only remove event listeners and parameter callbacks - locking inside JavaScriptPlugin means any
// inflight calls will still complete, so leave those to be removed and disposed as per usual
var retainedCallbacksAndListeners = _pendingCallbacks.RemoveWhere(info =>
info.PluginId == handler.Descriptor.PluginId && info.IsRetained);
foreach (var eventListener in retainedCallbacksAndListeners)
{
// Tell the remote plugin process that owns the listener or parameter callbacks to dispose of it
var removeListenerMessage = new PluginMessage
{
MessageId = eventListener.RequestMessage.MessageId,
MessageType = PluginMessageType.RemoveRetained,
PluginId = eventListener.RequestMessage.PluginId,
MemberName = eventListener.RequestMessage.MemberName,
Data = string.Empty,
BrowserId = eventListener.RequestMessage.BrowserId,
ContextId = eventListener.RequestMessage.ContextId
};
SendMessage(eventListener.Browser, removeListenerMessage);
eventListener.Dispose();
}
}
public static JavaScriptPlugin CreateFromType(PluginProcess pluginProcess, Type type, bool isKernel)
{
if (type == null)
{
return(null);
}
var pluginAttr = type.GetCustomAttributes(typeof(JavaScriptPluginAttribute), true);
if (pluginAttr.Length == 0)
{
return(null);
}
var pAttr = pluginAttr[0] as JavaScriptPluginAttribute;
if (pAttr == null)
{
return(null);
}
if (isKernel &&
((pluginProcess == PluginProcess.Browser && !pAttr.IsBrowserSide) ||
(pluginProcess == PluginProcess.Renderer && pAttr.IsBrowserSide)))
{
return(null);
}
var plugin = new JavaScriptPlugin(pluginProcess, Activator.CreateInstance(type), pAttr);
return(plugin.IsValid ? plugin : null);
}
private BrowserCallInfo CreateAndAddCall(CefBrowser browser, PluginMessage pluginMessage,
JavaScriptPlugin handler, IJavaScriptParameterCallback parameterCallback)
{
var pluginId = handler != null ? handler.Descriptor.PluginId : null;
var info = new BrowserCallInfo(this, browser, pluginMessage, pluginId, parameterCallback);
_pendingCallbacks.Add(info);
return(info);
}
/// <summary>
/// Invoke a local function.
/// </summary>
/// <param name="context">
/// The current V8 context that is making the function call.
/// </param>
/// <param name="targetPlugin">
/// The local plugin that owns the target method.
/// </param>
/// <param name="methodDescriptor">
/// The method to invoke.
/// </param>
/// <param name="parameters">
/// An interface for the local plugin to obtain the parameters from before invoking the function.
/// </param>
/// <param name="callback">
/// Optional callback into V8.
/// </param>
public void InvokeFunction(
CefV8Context context,
JavaScriptPlugin targetPlugin,
MethodDescriptor methodDescriptor,
IJavaScriptParameters parameters,
IV8Callback callback)
{
Logger.Info("InvokeFunction Local Plugin {0} Method {1}", targetPlugin.Descriptor.PluginId, methodDescriptor.MethodName);
if (!EnsureOnRendererThread())
{
return;
}
if (!targetPlugin.IsValid)
{
Logger.Warn("InvokeFunction Local Plugin {0} is invalid", targetPlugin.Descriptor.PluginId);
if (callback != null)
{
callback.Invoke(this, context, null, CallInfo.ErrorCodeCallCanceled, CallInfo.ErrorCallCanceled);
}
return;
}
var parameterCallbackInfo = GetOrCreateParameterCallback(context, methodDescriptor, callback);
var functionInvokeMessage = CreateMessage(context, targetPlugin.Descriptor, methodDescriptor.MethodName, callback);
functionInvokeMessage.MessageId = Guid.NewGuid();
functionInvokeMessage.MessageType = PluginMessageType.FunctionInvoke;
// Add the call info into the pending calls for the browser
var info = methodDescriptor.HasCallbackParameter
? AddLocalCallback(functionInvokeMessage, null, parameterCallbackInfo)
: AddLocalCallback(functionInvokeMessage, callback, null);
try
{
targetPlugin.InvokeFunctionDirect(
null,
functionInvokeMessage.BrowserId,
functionInvokeMessage.FrameId,
functionInvokeMessage.ContextId,
methodDescriptor.MethodName,
parameters,
info);
}
catch (Exception ex)
{
LocalCallbackInvoked(info, null, -1, ex.Message);
Logger.Error("InvokeFunction Failed Local Plugin {0} Method {1}: {2}",
targetPlugin.Descriptor.PluginId,
methodDescriptor.MethodName,
ex);
}
}
public LocalV8Plugin(IV8PluginRouter router, IPluginContext pluginContext, JavaScriptPlugin plugin)
: base(pluginContext, plugin.Descriptor)
{
if (router == null)
{
throw new ArgumentNullException("router");
}
_router = router;
_plugin = plugin;
}
private void OnAddListener(CefBrowser browser, PluginMessage pluginMessage, JavaScriptPlugin handler)
{
var info = CreateAndAddCall(browser, pluginMessage, handler, null);
if (!handler.IsValid)
{
RemoveAndCancelCall(info);
return;
}
var handled = handler.AddEventListener(pluginMessage.MemberName, info);
if (!handled)
{
RemoveAndCancelCall(info);
}
}
private ResultItem ToResultItem(object item)
{
var resultItem = new ResultItem();
if (item != null)
{
if (JavaScriptPlugin.IsDynamicPluginType(item.GetType()))
{
resultItem.DynamicPlugin = _responseHandler.AddDynamicPlugin(item);
}
else
{
resultItem.PlainData = JToken.FromObject(item, JsonSerializer.Create(ParagonJsonSerializer.Settings));
}
}
return(resultItem);
}
public object AddApplicationPlugin(string type, Assembly assembly)
{
try
{
var t = assembly.GetType(type);
if (t.GetCustomAttributes(typeof(JavaScriptPluginAttribute), true).Length == 0)
{
Logger.Error("Plugin attribute not found on type: " + type);
return(null);
}
var plugin = JavaScriptPlugin.CreateFromType(_managerProcess, t, false);
if (plugin == null)
{
Logger.Error("Failed to create plugin instance for type: " + type);
return(null);
}
if (plugin.IsDynamic)
{
Logger.Error("Dynamic application plugins are not allowed - type: " + type);
return(null);
}
if (!_localPluginsById.TryAdd(plugin.Descriptor.PluginId, plugin))
{
Logger.Error("Failed to add application plugin for type: " + type);
return(null);
}
Logger.Info("Application plugin added successfully: " + plugin.Descriptor.PluginId);
return(plugin.NativeObject);
}
catch (Exception e)
{
Logger.Error("Error adding application plugin: " + e);
return(null);
}
}
private void OnPluginRemoved(JavaScriptPlugin handler)
{
if (handler == null)
{
return;
}
Logger.Info("PluginRemoved ID {0}", handler.Descriptor.PluginId);
// Only remove event listeners and parameter callbacks - locking inside JavaScriptPlugin means any
// inflight calls will still complete, so leave those to be removed and disposed as per usual
var pending = _pendingCallbacks.RemoveWhere(info => info.PluginId == handler.Descriptor.PluginId && info.IsRetained);
foreach (var retainedCall in pending.OfType <LocalRenderCallInfo>())
{
if (retainedCall.IsEventListener)
{
handler.RemoveEventListener(retainedCall.RequestMessage.MemberName, retainedCall);
}
retainedCall.Dispose();
}
}
/// <summary>
/// Add a local V8 callback to a local event as a listener.
/// </summary>
/// <param name="context">
/// The current V8 context that is adding the listener.
/// </param>
/// <param name="targetPlugin">
/// The local plugin that owns the event.
/// </param>
/// <param name="eventName">
/// The name of the event to attach to.
/// </param>
/// <param name="callback">
/// The callback to V8 to invoke when the event is raised.
/// </param>
public void AddEventListener(CefV8Context context, JavaScriptPlugin targetPlugin, string eventName, IV8Callback callback)
{
Logger.Info("AddEventListener Local Plugin {0} Event {1}", targetPlugin.Descriptor.PluginId, eventName);
if (!EnsureOnRendererThread())
{
return;
}
if (!targetPlugin.IsValid)
{
Logger.Warn("AddEventListener Local Plugin {0} is invalid", targetPlugin.Descriptor.PluginId);
if (callback != null)
{
callback.Invoke(this, context, null, CallInfo.ErrorCodeCallCanceled, CallInfo.ErrorCallCanceled);
}
return;
}
var addListenerMessage = CreateMessage(context, targetPlugin.Descriptor, eventName, callback);
addListenerMessage.MessageId = callback.Identifier;
addListenerMessage.MessageType = PluginMessageType.AddListener;
// Add the call info into the pending calls for the browser
var info = AddLocalCallback(addListenerMessage, callback, null);
try
{
targetPlugin.AddEventListener(eventName, info);
}
catch (Exception ex)
{
// Remove listener from calls cache
_pendingCallbacks.Remove(info);
info.Dispose();
Logger.Error("AddEventListener Failed Local Plugin {0} Event {1}: {2}", targetPlugin.Descriptor.PluginId, eventName, ex);
}
}
public PluginDescriptor AddDynamicPlugin(object pluginObject)
{
// Remove any dead references that may exist.
_dynamicPluginRefs.RemoveAll(r => !r.IsAlive);
// Check if a dynamic plugin has already been created for the specified target.
var pluginRef = _dynamicPluginRefs.FirstOrDefault(wr => wr.MatchesTarget(pluginObject));
if (pluginRef != null)
{
// Found one, return it's descriptor.
return(pluginRef.Plugin.Descriptor);
}
// No existing dynamic plugin found. Create one and store a reference to it.
var dynPlugin = JavaScriptPlugin.CreateFromObject(PluginProcess.Browser, pluginObject);
pluginRef = new DynamicPluginRef(pluginObject, dynPlugin);
_dynamicPluginRefs.Add(pluginRef);
// Add the dynamic plugin to the plugin manager.
PluginManager.AddLocalPlugin(dynPlugin);
return(dynPlugin.Descriptor);
}
/// <summary>
/// Create an adapter for a local (in-process) plugin.
/// </summary>
/// <param name="router"></param>
/// <param name="pluginContext"></param>
/// <param name="jsPlugin"></param>
/// <returns></returns>
public static V8PluginAdapter CreateLocal(IV8PluginRouter router, IPluginContext pluginContext, JavaScriptPlugin jsPlugin)
{
if (jsPlugin == null)
{
return(null);
}
var plugin = new LocalV8Plugin(router, pluginContext, jsPlugin);
var pluginAdapter = new V8PluginAdapter(plugin);
return(pluginAdapter);
}
private void OnInvokeFunction(CefBrowser browser, PluginMessage pluginMessage, JavaScriptPlugin handler)
{
var methodDescriptor = handler.Descriptor.Methods.Find(descriptor => descriptor.MethodName == pluginMessage.MemberName);
IJavaScriptPluginCallback returnCallback = null;
BrowserCallInfo parameterCallback = null;
if (pluginMessage.V8CallbackId != Guid.Empty)
{
if (methodDescriptor.HasCallbackParameter)
{
// Create a second stored callback info which represents the V8 callback function itself
// rather than the method that is being invoked now. This allows the callback function
// to be passed to and invoked by multiple native methods that accept a callback parameter.
parameterCallback = _pendingCallbacks.Get(pluginMessage.V8CallbackId);
if (parameterCallback == null)
{
var parameterCallbackMessage = new PluginMessage
{
MessageId = pluginMessage.V8CallbackId,
MessageType = PluginMessageType.ParameterCallback,
PluginId = string.Empty,
MemberName = string.Empty,
BrowserId = pluginMessage.BrowserId,
ContextId = pluginMessage.ContextId,
FrameId = pluginMessage.FrameId,
V8CallbackId = Guid.Empty
};
parameterCallback = CreateAndAddCall(browser.Clone(), parameterCallbackMessage, null, null);
}
}
var returnCallInfo = CreateAndAddCall(browser, pluginMessage, handler, parameterCallback);
if (!handler.IsValid)
{
RemoveAndCancelCall(returnCallInfo);
return;
}
returnCallback = returnCallInfo;
}
JArray callArgs = null;
if (!string.IsNullOrEmpty(pluginMessage.Data))
{
callArgs = JArray.Parse(pluginMessage.Data);
}
handler.InvokeFunction(
_pluginManager,
pluginMessage.BrowserId,
pluginMessage.FrameId,
pluginMessage.ContextId,
pluginMessage.MemberName,
new JArrayJavaScriptParameters(callArgs),
returnCallback);
}
private void OnRemoveRetained(CefBrowser browser, PluginMessage pluginMessage, JavaScriptPlugin handler)
{
var info = _pendingCallbacks.Remove(pluginMessage.MessageId);
if (info != null)
{
if (info.IsEventListener)
{
handler.RemoveEventListener(pluginMessage.MemberName, info);
}
info.Dispose();
}
browser.Dispose();
}
public DynamicPluginRef(object target, JavaScriptPlugin plugin)
{
_targetRef = new WeakReference(target);
_pluginRef = new WeakReference(plugin);
}
private void DynamicPluginDisposed(JavaScriptPlugin dynamicPlugin)
{
RemoveLocalPlugin(dynamicPlugin.Descriptor.PluginId);
}
protected CefV8Value ToCefV8Value(IV8PluginRouter router, object result)
{
if (result == null)
{
return(CefV8Value.CreateNull());
}
// VALUES FROM REMOTE PLUGINS
var remoteResult = result as ResultData;
if (remoteResult != null)
{
switch (remoteResult.DataType)
{
case ResultDataType.Scalar:
if (remoteResult.Items != null && remoteResult.Items.Count != 0)
{
return(ToCefV8Value(router, remoteResult.Items[0]));
}
return(CefV8Value.CreateNull());
case ResultDataType.Array:
{
var cefArray = CefV8Value.CreateArray(remoteResult.Items.Count);
if (remoteResult.Items != null)
{
for (var resultIndex = 0; resultIndex < remoteResult.Items.Count; ++resultIndex)
{
var cefValue = ToCefV8Value(router, remoteResult.Items[resultIndex]);
cefArray.SetValue(resultIndex, cefValue);
}
}
return(cefArray);
}
case ResultDataType.Dictionary:
{
var cefObject = CefV8Value.CreateObject(null);
if (remoteResult.Items != null)
{
foreach (var dictionaryItem in remoteResult.Items)
{
if (string.IsNullOrEmpty(dictionaryItem.Name))
{
continue;
}
var cefValue = ToCefV8Value(router, dictionaryItem);
cefObject.SetValue(dictionaryItem.Name, cefValue, CefV8PropertyAttribute.None);
}
}
return(cefObject);
}
}
}
var resultItem = result as ResultItem;
if (resultItem != null)
{
return(ToCefV8Value(router, (object)resultItem.DynamicPlugin ?? resultItem.PlainData));
}
var pluginObjectDescriptor = result as PluginDescriptor;
if (pluginObjectDescriptor != null)
{
return(V8PluginAdapter.CreateRemote(router, _plugin.PluginContext, pluginObjectDescriptor).V8Object);
}
// VALUES FROM REMOTE OR LOCAL PLUGINS
var plainData = result as JToken;
if (plainData != null)
{
return(CefJsonValueConverter.ToCef(plainData));
}
// VALUES FROM LOCAL PLUGINS
var localArray = result as object[];
if (localArray != null)
{
var cefArray = CefV8Value.CreateArray(localArray.Length);
for (var resultIndex = 0; resultIndex < localArray.Length; ++resultIndex)
{
var cefValue = ToCefV8Value(router, localArray[resultIndex]);
cefArray.SetValue(resultIndex, cefValue);
}
return(cefArray);
}
var localPlugin = result as JavaScriptPlugin;
if (localPlugin != null)
{
return(V8PluginAdapter.CreateLocal(router, _plugin.PluginContext, localPlugin).V8Object);
}
if (JavaScriptPlugin.IsDynamicPlugin(result))
{
var dynPlugin = JavaScriptPlugin.CreateFromObject(PluginProcess.Renderer, result);
_plugin.PluginContext.PluginManager.AddLocalPlugin(dynPlugin);
return(V8PluginAdapter.CreateLocal(router, _plugin.PluginContext, dynPlugin).V8Object);
}
// local C# POCO
return(CefNativeValueConverter.ToCef(result));
}
