/// <summary>
/// JavaScript callback. Returns absolute path to the file that is referenced from the file in the
/// editor. Implementation copied from the Emmet project source code.
/// </summary>
public InternalHandle LocateFile(
V8Engine engine,
bool isConstructCall,
InternalHandle self,
params InternalHandle[] args)
{
if (args.Length != 2)
{
this.TraceError("IEmmetFile locateFile called with invalid number of arguments.");
return engine.CreateValue(false);
}
string editorFile = args[0].AsString;
string targetFile = args[1].AsString;
if (targetFile.StartsWith("HTTP", System.StringComparison.InvariantCultureIgnoreCase))
return engine.CreateValue(targetFile);
string folder = Path.GetDirectoryName(editorFile);
do
{
string retVal = Path.Combine(folder, targetFile);
if (File.Exists(retVal))
return engine.CreateValue(retVal);
}
while (folder.Length > 3);
return engine.CreateValue(string.Empty);
}
/// <summary>
/// JavaScript callback. Returns character indexes of selected text: object with <code>start</code>
/// and <code>end</code> properties.If there's no selection, should return object with
/// <code>start</code> and <code>end</code> properties referring to current caret position.
/// </summary>
public InternalHandle GetSelectionRange(
V8Engine engine,
bool isConstructCall,
InternalHandle self,
params InternalHandle[] args)
{
var selection = _editor.GetSelectionRange();
ObjectHandle retVal = engine.CreateObject();
retVal.SetProperty("start", engine.CreateValue(selection.Start));
retVal.SetProperty("end", engine.CreateValue(selection.End));
return retVal;
}
/// <summary>
/// JavaScript callback. Creates selection from <code>start</code> to <code>end</code> character
/// indexes. If <code>end</code> is omitted, this method should place caret and <code>start</code>
/// index.
/// </summary>
public InternalHandle CreateSelection(
V8Engine engine,
bool isConstructCall,
InternalHandle self,
params InternalHandle[] args)
{
if (args.Length == 2)
{
int start = args[0].AsInt32;
int end = args[0].AsInt32;
_editor.CreateSelection(start, end);
}
else
{
return SetCarretPos(engine, isConstructCall, self, args);
}
return engine.CreateValue(true);
}
/// <summary>
/// JavaScript callback. Creates selection from <code>start</code> to <code>end</code> character
/// indexes. If <code>end</code> is omitted, this method should place caret and <code>start</code>
/// index.
/// </summary>
public InternalHandle CreateSelection(
V8Engine engine,
bool isConstructCall,
InternalHandle self,
params InternalHandle[] args)
{
if (args.Length == 2)
{
int start = args[0].AsInt32;
int end = args[0].AsInt32;
_editor.CreateSelection(start, end);
}
else
{
return(SetCarretPos(engine, isConstructCall, self, args));
}
return(engine.CreateValue(true));
}
/// <summary>
/// JavaScript callback. Saves the specified content to the file with the specified name.
/// </summary>
public InternalHandle Save(
V8Engine engine,
bool isConstructorCall,
InternalHandle self,
params InternalHandle[] args)
{
if (args.Length != 2)
{
this.TraceError("IEmmetFile save called with invalid number of arguments.");
return(engine.CreateValue(false));
}
string filePath = args[0].AsString;
string content = args[1].AsString;
File.WriteAllText(filePath, content);
return(engine.CreateValue(true));
}
protected HandleProxy *_IndexedPropertySetter(Int32 index, HandleProxy *value, ref ManagedAccessorInfo info)
{
try
{
using (InternalHandle hValue = new InternalHandle(value, false))
{
var obj = _Engine._GetObjectWeakReference(info.ManagedObjectID);
if (obj == null)
{
return(null);
}
var mo = obj.Reset() as IV8ManagedObject;
return(mo != null?mo.IndexedPropertySetter(index, hValue) : null);
}
}
catch (Exception ex)
{
return(_Engine.CreateError(Exceptions.GetFullErrorMessage(ex), JSValueType.ExecutionError));
}
}
public InternalHandle TestJSFunction1(V8Engine engine, bool isConstructCall, InternalHandle _this, params InternalHandle[] args)
{
// ... there can be two different returns based on the call mode! ...
// (tip: if a new object is created and returned instead (such as V8ManagedObject or an object derived from it), then that object will be the new object (instead of "_this"))
if (isConstructCall)
{
var obj = engine.GetObject(_this);
obj.AsDynamic.x = args[0];
((dynamic)obj).y = 0; // (native objects in this case will always be V8NativeObject dynamic objects)
obj.SetProperty(0, engine.CreateValue(100));
obj.SetProperty("1", engine.CreateValue(100.2));
obj.SetProperty("2", engine.CreateValue("300"));
obj.SetProperty(4, engine.CreateValue(new DateTime(2013, 1, 2, 3, 4, 5, DateTimeKind.Utc)));
return(_this);
}
else
{
return(args.Length > 0 ? args[0] : InternalHandle.Empty);
}
}
public bool Load()
{
bool state = include(g_EntryFileName);
if (state)
{
InternalHandle h = engine.GlobalObject.GetProperty("PluginInfo");
if (!h.IsObject)
{
Logger.LogError(g_EntryFileName + " has no 'PluginInfo' defined.");
return(false);
}
pluginInfo = new PluginInfo();
pluginInfo.Name = h.GetProperty("Name").AsString;
pluginInfo.Version = h.GetProperty("Version").AsString;
pluginInfo.Author = h.GetProperty("Author").AsString;
pluginInfo.Description = h.GetProperty("Description").AsString;
}
return(state);
}
protected HandleProxy *_IndexedPropertySetter(Int32 index, HandleProxy *value, ref ManagedAccessorInfo info)
{
try
{
InternalHandle hValue = value;
var obj = _Engine._GetExistingObject(info.ManagedObjectID);
if (obj == null)
{
return(null);
}
var mo = obj as IV8ManagedObject;
var result = mo != null?mo.IndexedPropertySetter(index, hValue) : null;
return(result);
}
catch (Exception ex)
{
return(_Engine.CreateError(Exceptions.GetFullErrorMessage(ex), JSValueType.ExecutionError));
}
}
internal void OnKeyDown(int keyCode, int charCode)
{
if (v8.IsDisposed)
{
return;
}
using (Handle functHandle = v8.Execute("document.onkeydown", SOURCE_NAME, false))
{
if (functHandle.ValueType != JSValueType.CompilerError && functHandle.IsFunction)
{
InternalHandle obj = v8.CreateObject();
obj.SetProperty("keyCode", keyCode);
obj.SetProperty("charCode", charCode);
functHandle.AsInternalHandle.StaticCall(obj);
}
}
}
/// <summary>
/// Calls the native V8 proxy library to create the value instance for use within the V8 JavaScript environment.
/// <para>This overload provides a *quick way* to construct an array of strings.
/// One big memory block is created to marshal the given strings at one time, which is many times faster than having to create an array of individual native strings.</para>
/// </summary>
public InternalHandle CreateValue(IEnumerable <string> items)
{
if (items == null)
{
return(V8NetProxy.CreateArray(_NativeV8EngineProxy, null, 0));
}
var itemsEnum = items.GetEnumerator();
int strBufSize = 0; // (size needed for the string chars portion of the memory block)
int itemsCount = 0;
while (itemsEnum.MoveNext())
{
// get length of all strings together
strBufSize += itemsEnum.Current.Length + 1; // (+1 for null char)
itemsCount++;
}
itemsEnum.Reset();
int strPtrBufSize = Marshal.SizeOf(typeof(IntPtr)) * itemsCount; // start buffer size with size needed for all string pointers.
char **oneBigStringBlock = (char **)Utilities.AllocNativeMemory(strPtrBufSize + Marshal.SystemDefaultCharSize * strBufSize);
char **ptrWritePtr = oneBigStringBlock;
char * strWritePtr = (char *)(((byte *)oneBigStringBlock) + strPtrBufSize);
int itemLength;
while (itemsEnum.MoveNext())
{
itemLength = itemsEnum.Current.Length;
Marshal.Copy(itemsEnum.Current.ToCharArray(), 0, (IntPtr)strWritePtr, itemLength);
Marshal.WriteInt16((IntPtr)(strWritePtr + itemLength), 0);
Marshal.WriteIntPtr((IntPtr)ptrWritePtr++, (IntPtr)strWritePtr);
strWritePtr += itemLength + 1;
}
InternalHandle handle = V8NetProxy.CreateStringArray(_NativeV8EngineProxy, oneBigStringBlock, itemsCount);
Utilities.FreeNativeMemory((IntPtr)oneBigStringBlock);
return(handle);
}
// --------------------------------------------------------------------------------------------------------------------
/// <summary>
/// Same as "GetObject()", but used internally for getting objects that are associated with templates (such as getting function prototype objects).
/// </summary>
internal T _GetObject <T>(ITemplate template, InternalHandle handle, bool createIfNotFound = true, bool initializeOnCreate = true, bool connectNativeObject = true)
where T : V8NativeObject, new()
{
T obj = null;
try
{
if (handle.IsEmpty)
{
return(null);
}
if (handle.Engine != this)
{
throw new InvalidOperationException("The specified handle was not generated from this V8Engine instance.");
}
var weakRef = _GetObjectWeakReference(handle.ObjectID); // (if out of bounds or invalid, this will simply return null)
if (weakRef != null)
{
obj = weakRef.Reset() as T;
if (obj != null && !typeof(T).IsAssignableFrom(obj.GetType()))
{
throw new InvalidCastException("The existing object of type '" + obj.GetType().Name + "' cannot be converted to type '" + typeof(T).Name + "'.");
}
}
if (obj == null && createIfNotFound)
{
handle.ObjectID = -1; // (managed object doesn't exist [perhaps GC'd], so reset the ID)
obj = _CreateObject <T>(template, handle.PassOn(), initializeOnCreate, connectNativeObject);
}
}
finally
{
handle._DisposeIfFirst();
}
return(obj);
}
/// <summary>
/// JavaScript callback. Replace editor's content or it's part (from <code>start</code> to
/// <code>end</code> index). If <code>value</code> contains <code>caret_placeholder</code>, the editor
/// will put caret into this position. If you skip <code>start</code> and <code>end</code> arguments,
/// the whole target's content will be replaced with <code>value</code>.
/// If you pass <code>start</code> argument only, the <code>value</code> will be placed at
/// <code>start</code> string index of current content.
/// If you pass <code>start</code> and <code>end</code> arguments, the corresponding substring of
/// current target's content will be replaced with <code>value</code>.
/// </summary>
public InternalHandle ReplaceContent(
V8Engine engine,
bool isConstructCall,
InternalHandle self,
params InternalHandle[] args)
{
string rawContent = args[0].AsString;
int regionStart = args.Length > 1 ? args[1].AsInt32 : -1;
int regionLength = args.Length > 2 ? args[2].AsInt32 - regionStart : 0;
bool indentContent = args.Length == 4 ? args[3].AsBoolean : true;
this.Trace($"Received new content for the editor: {rawContent}");
// Extract tab stops placeholders from the specified content.
var tabStops = TabStopsParser.ParseContent(engine, rawContent);
_editor.ReplaceContentRange(tabStops.Content, regionStart, regionStart + regionLength);
if (null != tabStops.TabStops)
{
Range[] tabStopRanges = tabStops.TabStops;
// Tab stop offsets are relative to the newly generated content ranges, we need to convert
// them to the document-wide offsets.
if (regionStart > 0)
{
tabStopRanges = tabStopRanges.Select(
item => new Range(item.Start + regionStart, item.End + regionStart)).ToArray();
}
_editor.TrackTabStops(tabStopRanges, tabStops.TabStopGroups);
}
if (indentContent)
{
_editor.FormatRegion(regionStart, regionStart + tabStops.Content.Length);
}
return(engine.CreateValue(true));
}
/// <summary>
/// JavaScript callback. Creates absolute path by concatenating two arguments.
/// </summary>
public InternalHandle CreatePath(
V8Engine engine,
bool isConstructorCall,
InternalHandle self,
params InternalHandle[] args)
{
if (args.Length != 2)
{
this.TraceError("IEmmetFile createPath called with invalid number of arguments.");
return(engine.CreateValue(false));
}
string parent = args[0].AsString;
string fileName = args[1].AsString;
if (Path.HasExtension(parent))
{
parent = Path.GetDirectoryName(parent);
}
return(engine.CreateValue(Path.Combine(parent, fileName)));
}
private InternalHandle XHRSend(V8Engine engine, bool isConstructCall, InternalHandle _this, InternalHandle[] args)
{
string data = null;
try
{
if (_req.Method == "POST" && args.Length == 1)
{
if (args[0].IsString)
{
var pd = Encoding.UTF8.GetBytes(args[0].AsString);
_req.GetRequestStream().Write(pd, 0, pd.Length);
}
else if (args[0].IsArray)
{
var pd = (byte[])Types.ChangeType(args[0].Value, typeof(char[]));
_req.GetRequestStream().Write(pd, 0, pd.Length);
}
}
_rsp = (HttpWebResponse)_req.GetResponse();
if (_rsp.StatusCode == HttpStatusCode.OK)
{
var d = new StreamReader(_rsp.GetResponseStream()).ReadToEnd();
if (!string.IsNullOrEmpty(d))
{
data = d;
}
}
}
catch { }
if (data != null)
{
return(Engine.CreateValue(data));
}
return(null);
}
/// <summary>
/// JavaScript callback. Reads the specified file content and returns it as string.
/// </summary>
public InternalHandle Read(
V8Engine engine,
bool isConstructCall,
InternalHandle self,
params InternalHandle[] args)
{
if (args.Length != 3)
{
this.TraceError("IEmmetFile read called with invalid number of arguments.");
return(engine.CreateValue(false));
}
string targetFilePath = args[0].AsString;
int chunkSize = args[1].AsInt32;
ObjectHandle callback = args[2];
if (!File.Exists(targetFilePath))
{
this.TraceError($"Emmet requested file {targetFilePath} that does not exist.");
callback.StaticCall(engine.CreateValue(true), engine.CreateNullValue());
return(engine.CreateValue(false));
}
char[] buf = new char[chunkSize];
FileStream stream = File.OpenRead(targetFilePath);
using (StreamReader reader = new StreamReader(stream))
{
chunkSize = reader.ReadBlock(buf, 0, chunkSize);
}
string retVal = new string(buf, 0, chunkSize);
callback.StaticCall(engine.CreateValue(false), engine.CreateValue(retVal));
return(engine.CreateValue(true));
}
public void CompileAndExecute(string script)
{
if (isDisposing)
{
return;
}
const string ES_REF = "ecmascript:";
const string JS_REF = "javascript:";
script = script.TrimStart();
string start = script.Substring(0, ES_REF.Length).ToLower();
script = start.StartsWith(ES_REF) ? script.Remove(0, ES_REF.Length) : script;
script = start.StartsWith(JS_REF) ? script.Remove(0, JS_REF.Length) : script;
using (InternalHandle handle = v8.Compile(script, SOURCE_NAME, false).AsInternalHandle)
{
if (!handle.IsError)
{
try
{
Handle result = v8.Execute(handle, true);
//handle.Dispose();
}
catch (Exception ex)
{
ConsoleColor tmp = Console.ForegroundColor;
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("(SCRIPT) {0}", ex.Message);
Console.ForegroundColor = tmp;
}
}
}
}
// --------------------------------------------------------------------------------------------------------------------
/// <summary>
/// Calls the V8 'SetAccessor()' function on the underlying native 'v8::ObjectTenplate' instance to create a property that is controlled by "getter" and "setter" callbacks.
/// <para>Note: This is template related, which means all objects created from this template will be affected by these special properties.</para>
/// </summary>
public void SetAccessor(string name,
V8NativeObjectPropertyGetter getter, V8NativeObjectPropertySetter setter,
V8PropertyAttributes attributes = V8PropertyAttributes.None, V8AccessControl access = V8AccessControl.Default)
{
if (name.IsNullOrWhiteSpace())
{
throw new ArgumentNullException("name (cannot be null, empty, or only whitespace)");
}
var engine = Engine;
V8NetProxy.SetObjectTemplateAccessor(_NativeObjectTemplateProxy, -1, name,
_Engine._StoreAccessor <ManagedAccessorGetter>(_NativeObjectTemplateProxy->ObjectID, "get_" + name, (HandleProxy * _this, string propertyName) =>
{
try
{
using (InternalHandle hThis = _this) { return(getter != null ? getter(hThis, propertyName) : null); }
}
catch (Exception ex)
{
return(engine.CreateError(Exceptions.GetFullErrorMessage(ex), JSValueType.ExecutionError));
}
}),
_Engine._StoreAccessor <ManagedAccessorSetter>(_NativeObjectTemplateProxy->ObjectID, "set_" + name, (HandleProxy * _this, string propertyName, HandleProxy * value) =>
{
try
{
using (InternalHandle hThis = _this) { return(setter != null ? setter(hThis, propertyName, value) : null); }
}
catch (Exception ex)
{
return(engine.CreateError(Exceptions.GetFullErrorMessage(ex), JSValueType.ExecutionError));
}
}),
access, attributes);
}
/// <summary>
/// JavaScript callback. Reads the specified file content and returns it as string.
/// </summary>
public InternalHandle Read(
V8Engine engine,
bool isConstructCall,
InternalHandle self,
params InternalHandle[] args)
{
if (args.Length != 3)
{
this.TraceError("IEmmetFile read called with invalid number of arguments.");
return engine.CreateValue(false);
}
string targetFilePath = args[0].AsString;
int chunkSize = args[1].AsInt32;
ObjectHandle callback = args[2];
if (!File.Exists(targetFilePath))
{
this.TraceError($"Emmet requested file {targetFilePath} that does not exist.");
callback.StaticCall(engine.CreateValue(true), engine.CreateNullValue());
return engine.CreateValue(false);
}
char[] buf = new char[chunkSize];
FileStream stream = File.OpenRead(targetFilePath);
using (StreamReader reader = new StreamReader(stream))
{
chunkSize = reader.ReadBlock(buf, 0, chunkSize);
}
string retVal = new string(buf, 0, chunkSize);
callback.StaticCall(engine.CreateValue(false), engine.CreateValue(retVal));
return engine.CreateValue(true);
}
// --------------------------------------------------------------------------------------------------------------------
/// <summary>
/// Calls an object property with a given name on a specified object as a function and returns the result.
/// The '_this' property is the "this" object within the function when called.
/// </summary>
public virtual InternalHandle Call(string functionName, InternalHandle _this, params InternalHandle[] args)
{
return(_Handle.Call(functionName, _this, args));
}
// --------------------------------------------------------------------------------------------------------------------
/// <summary>
/// Calls the V8 'Set()' function on the underlying native object.
/// Returns true if successful.
/// </summary>
/// <param name="attributes">Flags that describe the property behavior. They must be 'OR'd together as needed.</param>
public virtual bool SetProperty(string name, InternalHandle value, V8PropertyAttributes attributes = V8PropertyAttributes.None)
{
return(_Handle.SetProperty(name, value, attributes));
}
public override bool SetProperty(int index, InternalHandle value)
{
var result = IndexedPropertySetter(index, value);
if (result.IsUndefined) return base.SetProperty(index, value);
return true;
}
public virtual InternalHandle IndexedPropertySetter(int index, InternalHandle value)
{
var propertyName = index.ToString();
return NamedPropertySetter(ref propertyName, value);
}
/// <summary> /// Creates an upgradable read lock handle. /// </summary> /// <returns>the upgradable read lock handle.</returns> public IUpgradableLockHandle UseUpgradableReadLock() => InternalHandle.CreateUpgradableWriteHandle(_rwLock);
/// <summary> /// Creates a read lock handle. /// </summary> /// <returns>the read lock handle</returns> public IDisposable UseReadLock() => InternalHandle.CreateReadHandle(_rwLock);
/// <summary>
/// JavaScript callback. Returns the content of the current line.
/// </summary>
public InternalHandle GetCurrentLine(
V8Engine engine,
bool isConstructCall,
InternalHandle self,
params InternalHandle[] args)
{
string txt = _editor.GetCurrentLine();
return engine.CreateValue(txt);
}
/// <summary>
/// Constructs a ReadValueId for the specified UA attribute.
/// </summary>
/// <param name="handle">The handle.</param>
/// <param name="uaAttributeId">The ua attribute id.</param>
/// <returns></returns>
private ReadValueId Construct(InternalHandle handle, uint uaAttributeId)
{
ReadValueId readValueId = new ReadValueId();
readValueId.NodeId = handle.NodeId;
readValueId.AttributeId = uaAttributeId;
readValueId.Handle = handle;
return readValueId;
}
/// <summary>
/// Gets the item handles.
/// </summary>
/// <param name="session">The session.</param>
/// <param name="itemIds">The item ids.</param>
/// <param name="clientHandles">The client handles.</param>
/// <param name="validateOnly">if set to <c>true</c> handles are not created and item ids are only validated.</param>
/// <returns>The handles containing any error information.</returns>
public HdaItemHandle[] GetItemHandles(Session session, string[] itemIds, int[] clientHandles, bool validateOnly)
{
HdaItemHandle[] handles = new HdaItemHandle[itemIds.Length];
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
for (int ii = 0; ii < itemIds.Length; ii++)
{
InternalHandle handle = new InternalHandle();
handles[ii] = handle;
if (clientHandles != null)
{
handle.ClientHandle = clientHandles[ii];
}
string itemId = itemIds[ii];
if (String.IsNullOrEmpty(itemId))
{
handle.Error = ResultIds.E_INVALIDITEMID;
continue;
}
// check if item has already been assigned.
Item item = null;
if (!validateOnly)
{
lock (m_lock)
{
if (m_items.TryGetValue(itemId, out item))
{
handle.NodeId = item.NodeId;
handle.ServerHandle = ++m_lastServerHandle;
handle.Item = item;
item.Refs++;
m_handles[handle.ServerHandle] = handle;
Utils.Trace("Created Handle: {0} {1}", handle.ServerHandle, handle.NodeId);
continue;
}
}
}
// create a new item.
handle.Item = item = new Item();
item.ItemId = itemId;
handle.Error = ResultIds.S_OK; // assume valid for no - set to an error when detected.
handle.NodeId = item.NodeId = m_mapper.GetRemoteNodeId(itemId);
nodesToRead.Add(Construct(handle, Attributes.UserAccessLevel));
nodesToRead.Add(Construct(handle, Attributes.DisplayName));
nodesToRead.Add(Construct(handle, Attributes.Description));
nodesToRead.Add(Construct(handle, Attributes.DataType));
nodesToRead.Add(Construct(handle, Attributes.ValueRank));
nodesToRead.Add(Construct(handle, Attributes.Historizing));
}
// check if nothing to do.
if (nodesToRead.Count == 0)
{
return handles;
}
DataValueCollection values = null;
DiagnosticInfoCollection diagnosticInfos = null;
// read values from the UA server.
session.Read(
null,
0,
TimestampsToReturn.Neither,
nodesToRead,
out values,
out diagnosticInfos);
// validate response from the UA server.
ClientBase.ValidateResponse(values, nodesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead);
// assign a local handle to all valid items.
NodeIdCollection nodesToRegister = new NodeIdCollection();
List<InternalHandle> items = new List<InternalHandle>();
for (int ii = 0; ii < nodesToRead.Count; ii++)
{
InternalHandle handle = (InternalHandle)nodesToRead[ii].Handle;
DataValue value = values[ii];
Item item = handle.Item;
// check status codes.
if (StatusCode.IsBad(value.StatusCode))
{
// description is an optional attribute.
if (nodesToRead[ii].AttributeId != Attributes.Description)
{
handle.Error = ResultIds.E_UNKNOWNITEMID;
}
continue;
}
// check access level.
if (nodesToRead[ii].AttributeId == Attributes.UserAccessLevel)
{
byte accessLevel = value.GetValue<byte>(AccessLevels.None);
if ((accessLevel & AccessLevels.HistoryRead) == 0)
{
handle.Error = ResultIds.E_UNKNOWNITEMID;
continue;
}
}
// save attribute.
switch (nodesToRead[ii].AttributeId)
{
case Attributes.DisplayName: { item.DisplayName = value.GetValue<LocalizedText>(null); break; }
case Attributes.Description: { item.Description = value.GetValue<LocalizedText>(null); break; }
case Attributes.DataType: { item.DataType = value.GetValue<NodeId>(null); break; }
case Attributes.ValueRank: { item.ValueRank = value.GetValue<int>(ValueRanks.Scalar); break; }
case Attributes.Historizing: { item.Historizing = value.GetValue<bool>(false); break; }
}
// should have all item metadata when processing the historizing attribute result.
if (nodesToRead[ii].AttributeId == Attributes.Historizing)
{
// check for a fatal error with one or more mandatory attributes.
if (handle.Error != ResultIds.S_OK)
{
continue;
}
BuiltInType builtInType = DataTypes.GetBuiltInType(item.DataType, session.TypeTree);
item.RemoteType = new TypeInfo(builtInType, item.ValueRank);
if (!validateOnly)
{
nodesToRegister.Add(item.NodeId);
items.Add(handle);
lock (m_lock)
{
m_items[handle.Item.ItemId] = handle.Item;
handle.ServerHandle = ++m_lastServerHandle;
handle.NodeId = handle.Item.NodeId;
handle.Item.Refs++;
m_handles[handle.ServerHandle] = handle;
Utils.Trace("Created Handle: {0} {1}", handle.ServerHandle, handle.NodeId);
}
}
}
}
return handles;
}
/// <summary>
/// JavaScript callback. Creates absolute path by concatenating two arguments.
/// </summary>
public InternalHandle CreatePath(
V8Engine engine,
bool isConstructorCall,
InternalHandle self,
params InternalHandle[] args)
{
if (args.Length != 2)
{
this.TraceError("IEmmetFile createPath called with invalid number of arguments.");
return engine.CreateValue(false);
}
string parent = args[0].AsString;
string fileName = args[1].AsString;
if (Path.HasExtension(parent))
parent = Path.GetDirectoryName(parent);
return engine.CreateValue(Path.Combine(parent, fileName));
}
// --------------------------------------------------------------------------------------------------------------------
/// <summary>
/// Calls the V8 'Set()' function on the underlying native object.
/// Returns true if successful.
/// </summary>
/// <param name="attributes">Flags that describe the property behavior. They must be 'OR'd together as needed.</param>
public virtual bool SetProperty(string name, InternalHandle value, V8PropertyAttributes attributes = V8PropertyAttributes.None)
{
return _Handle._Handle.SetProperty(name, value, attributes);
}
/// <summary>
/// JavaScript callback. Returns current editor's file path.
/// </summary>
public InternalHandle GetFilePath(
V8Engine engine,
bool isConstructCall,
InternalHandle self,
params InternalHandle[] args)
{
// As of version 1.3 this callback is required only for actions with external images that we don't
// support.
return engine.CreateNullValue();
}
/// <summary>
/// JavaScript callback. Returns current selection.
/// </summary>
public InternalHandle GetSelection(
V8Engine engine,
bool isConstructCall,
InternalHandle self,
params InternalHandle[] args)
{
string selection = _editor.GetSelection();
if (string.IsNullOrEmpty(selection))
return engine.CreateValue(string.Empty);
return engine.CreateValue(selection);
}
/// <summary>
/// JavaScript callback. Asks user to enter something.
/// </summary>
public InternalHandle Prompt(
V8Engine engine,
bool isConstructCall,
InternalHandle self,
params InternalHandle[] args)
{
string input = _editor.Prompt();
if (string.IsNullOrWhiteSpace(input))
return engine.CreateNullValue();
return engine.CreateValue(input);
}
public JSProperty(TValueSource source, InternalHandle value, V8PropertyAttributes attributes = V8PropertyAttributes.None) : this(source, attributes)
{
_Value.Set(value);
}
/// <summary>
/// Reads the current values for the specified attributes.
/// </summary>
/// <param name="session">The session.</param>
/// <param name="itemHandle">The item handle.</param>
/// <param name="attributeIds">The attribute ids.</param>
/// <returns></returns>
public DaValue[] ReadCurrentValues(Session session, HdaItemHandle itemHandle, uint[] attributeIds)
{
DaValue[] results = new DaValue[attributeIds.Length];
// check handle.
InternalHandle handle = itemHandle as InternalHandle;
if (handle == null)
{
for (int ii = 0; ii < results.Length; ii++)
{
results[ii] = new DaValue();
results[ii].Error = ResultIds.E_INVALIDHANDLE;
}
return(results);
}
// look up the supported attributes for an item.
ReadValueIdCollection supportedAttributes = handle.Item.SupportedAttributes;
if (supportedAttributes == null)
{
handle.Item.SupportedAttributes = supportedAttributes = GetAvailableAttributes(session, handle.NodeId);
}
// build list of values to read.
ReadValueIdCollection valuesToRead = new ReadValueIdCollection();
List <int> indexes = new List <int>();
for (int ii = 0; ii < attributeIds.Length; ii++)
{
ReadValueId valueToRead = GetReadValueId(supportedAttributes, attributeIds[ii]);
if (valueToRead == null)
{
results[ii] = new DaValue();
results[ii].Error = ResultIds.E_INVALIDATTRID;
continue;
}
valuesToRead.Add(valueToRead);
indexes.Add(ii);
// need to fetch the value rank as well.
if (attributeIds[ii] == Constants.OPCHDA_DATA_TYPE)
{
valuesToRead.Add(GetReadValueId(supportedAttributes, ComHdaProxy.INTERNAL_ATTRIBUTE_VALUE_RANK));
indexes.Add(-1);
}
}
// nothing to do.
if (valuesToRead.Count == 0)
{
return(results);
}
// read values from the UA server.
DataValueCollection values = null;
DiagnosticInfoCollection diagnosticInfos = null;
session.Read(
null,
0,
TimestampsToReturn.Neither,
valuesToRead,
out values,
out diagnosticInfos);
// validate response from the UA server.
ClientBase.ValidateResponse(values, valuesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, valuesToRead);
// assign a local handle to all valid items.
for (int ii = 0; ii < valuesToRead.Count; ii++)
{
int index = indexes[ii];
uint attributeId = (uint)valuesToRead[ii].Handle;
// check for values which are combined with other values to create the value (e.g. ValueRank).
if (index == -1)
{
continue;
}
results[index] = GetAttributeValue(session, attributeId, values, ii);
// only support current value for now.
if (results[index].Error == ResultIds.S_OK)
{
results[index].Error = ResultIds.S_CURRENTVALUE;
}
}
return(results);
}
/// <summary>
/// Calls the native side to invoke the function associated with this managed function wrapper.
/// The '_this' property is the "this" object within the function when called.
/// <para>Note: This method simply calls 'Handle.Call()' without a function name.</para>
/// </summary>
public override InternalHandle Call(InternalHandle _this, params InternalHandle[] args) { return _Handle._Handle._Call(null, _this, args); }
/// <summary>
/// JavaScript callback. Returns current output profile name (see profile module). In most cases,
/// this method should return <code>null</code> and let Emmet guess best profile name for current
/// syntax and user data. In case you’re using advanced editor with access to syntax scopes (like
/// Sublime Text 2), you can return syntax name for current scope. For example, you may return
/// `line` profile when editor caret is inside string of programming language.
/// </summary>
public InternalHandle GetProfileName(
V8Engine engine,
bool isConstructCall,
InternalHandle self,
params InternalHandle[] args)
{
// Let Emmet engine detect profile
return engine.CreateNullValue();
}
// (Get an object from an internal handle [value type] if the handle represents a managed V8 object, otherwise just return the internal handle as an object) static object _GetObjectOrHandle(InternalHandle h) => h.HasObject ? h.Object : (Handle)h;
/// <summary> /// Creates a write lock handle. /// </summary> /// <returns>the write lock handle</returns> public IDisposable UseWriteLock() => InternalHandle.CreateWriteHandle(_rwLock);
/// <summary>
/// JavaScript callbacks. Returns the content of the current editor window.
/// </summary>
public InternalHandle GetContent(
V8Engine engine,
bool isConstructCall,
InternalHandle self,
params InternalHandle[] args)
{
return engine.CreateValue(_editor.GetContent());
}
public virtual InternalHandle NamedPropertySetter(ref string propertyName, InternalHandle value, V8PropertyAttributes attributes = V8PropertyAttributes.Undefined)
{
if (_Proxy != this)
{
var result = ((IV8ManagedObject)_Proxy).NamedPropertySetter(ref propertyName, value, attributes);
if (!result.IsUndefined) return result;
}
var jsVal = this[propertyName];
if (jsVal.Value.IsEmpty)
this[propertyName] = jsVal = new JSProperty(value, attributes != V8PropertyAttributes.Undefined ? attributes : V8PropertyAttributes.None);
else
{
if (attributes != V8PropertyAttributes.Undefined)
{
jsVal.Attributes = attributes;
jsVal.Value = value; // (note: updating attributes automatically assumes writable access)
}
else if ((jsVal.Attributes & V8PropertyAttributes.ReadOnly) == 0)
jsVal.Value = value;
}
return jsVal.Value;
}
/// <summary>
/// Calls the V8 'Set()' function on the underlying native object.
/// Returns true if successful.
/// </summary>
/// <param name="attributes">Flags that describe the property behavior. They must be 'OR'd together as needed.</param>
public virtual bool SetProperty(string name, InternalHandle value, V8PropertyAttributes attributes)
{
return HandleInternal.HandleInternal.SetProperty(name, value, attributes);
}
// --------------------------------------------------------------------------------------------------------------------
// Since some base methods operate on object properties, and the properties exist on this managed object, we override
// them here to speed things up.
public override bool SetProperty(string name, InternalHandle value, V8PropertyAttributes attributes = V8PropertyAttributes.None)
{
var result = NamedPropertySetter(ref name, value, attributes);
if (result.IsUndefined) return base.SetProperty(name, value, attributes); // (if this virtual override fails to set the property, try to do it via the base [directly on the native object])
return true;
}
/// <summary>
/// Calls the V8 'Set()' function on the underlying native object.
/// Returns true if successful.
/// </summary>
public virtual bool SetProperty(Int32 index, InternalHandle value)
{
return HandleInternal.HandleInternal.SetProperty(index, value);
}
/// <summary>
/// JavaScript callback. Replace editor's content or it's part (from <code>start</code> to
/// <code>end</code> index). If <code>value</code> contains <code>caret_placeholder</code>, the editor
/// will put caret into this position. If you skip <code>start</code> and <code>end</code> arguments,
/// the whole target's content will be replaced with <code>value</code>.
/// If you pass <code>start</code> argument only, the <code>value</code> will be placed at
/// <code>start</code> string index of current content.
/// If you pass <code>start</code> and <code>end</code> arguments, the corresponding substring of
/// current target's content will be replaced with <code>value</code>.
/// </summary>
public InternalHandle ReplaceContent(
V8Engine engine,
bool isConstructCall,
InternalHandle self,
params InternalHandle[] args)
{
string rawContent = args[0].AsString;
int regionStart = args.Length > 1 ? args[1].AsInt32 : -1;
int regionLength = args.Length > 2 ? args[2].AsInt32 - regionStart : 0;
bool indentContent = args.Length == 4 ? args[3].AsBoolean : true;
this.Trace($"Received new content for the editor: {rawContent}");
// Extract tab stops placeholders from the specified content.
var tabStops = TabStopsParser.ParseContent(engine, rawContent);
_editor.ReplaceContentRange(tabStops.Content, regionStart, regionStart + regionLength);
if (null != tabStops.TabStops)
{
Range[] tabStopRanges = tabStops.TabStops;
// Tab stop offsets are relative to the newly generated content ranges, we need to convert
// them to the document-wide offsets.
if (regionStart > 0)
{
tabStopRanges = tabStopRanges.Select(
item => new Range(item.Start + regionStart, item.End + regionStart)).ToArray();
}
_editor.TrackTabStops(tabStopRanges, tabStops.TabStopGroups);
}
if (indentContent)
_editor.FormatRegion(regionStart, regionStart + tabStops.Content.Length);
return engine.CreateValue(true);
}
public InternalHandle CreateConnection(V8Engine engine, bool isConstructCall, InternalHandle _this, InternalHandle[] args)
{
try
{
if (args.Length >= 1)
{
var profileName = args[0].AsString;
InternalHandle callback = (args.Length == 2 ? args[1].KeepAlive() : null);
if (!string.IsNullOrEmpty(profileName))
{
if (callback != null && callback.IsFunction)
{
new Task(() =>
{
try { callback.StaticCall(Engine.CreateValue(new ConnectionHelper(profileName))); }
catch (Exception ex) { Log.Trace(ex.Message, ex.StackTrace, true); }
}).Start();
}
else
{
try { return(Engine.CreateValue(new ConnectionHelper(profileName))); }
catch (Exception ex) { Log.Trace(ex.Message, ex.StackTrace, true); }
}
}
}
}
catch (Exception ex) { Log.Trace(ex.Message, ex.StackTrace, true); }
return(null);
}
/// <summary>
/// Calls the V8 'Set()' function on the underlying native object.
/// Returns true if successful.
/// </summary>
/// <param name="index"> Zero-based index to set. </param>
/// <param name="value"> The value to set. </param>
/// <param name="attributes">
/// (Optional) Flags that describe the property behavior. They must be 'OR'd together as needed.
/// <para>Warning: V8 does not support setting attributes using numerical indexes. If you set an attribute, the given
/// value is converted to a string, and a named property setter will be used instead. </para>
/// </param>
public virtual bool SetProperty(Int32 index, InternalHandle value, V8PropertyAttributes attributes = V8PropertyAttributes.Undefined)
{
return(_Handle.SetProperty(index, value, attributes));
}
/// <summary>
/// JavaScript callback. Set new caret position.
/// </summary>
public InternalHandle SetCarretPos(
V8Engine engine,
bool isConstructCall,
InternalHandle self,
params InternalHandle[] args)
{
_editor.SetCaretPosition(args[0].AsInt32);
return engine.CreateValue(true);
}
/// <summary>
/// Calls the underlying object as a function.
/// The '_this' parameter is the "this" reference within the function when called.
/// </summary>
public virtual InternalHandle Call(InternalHandle _this, params InternalHandle[] args)
{
return(_Handle.Call(_this, args));
}
// --------------------------------------------------------------------------------------------------------------------
// Since some base methods operate on object properties, and the properties exist on this managed object, we override
// them here to speed things up.
public override bool SetProperty(string name, InternalHandle value)
{
return SetProperty(name, value, V8PropertyAttributes.None);
}
public JSProperty(InternalHandle value, V8PropertyAttributes attributes = V8PropertyAttributes.None) : this(default(TValueSource), value, attributes)
{
}
public override bool SetProperty(string name, InternalHandle value, V8PropertyAttributes attributes)
{
var result = NamedPropertySetter(ref name, value, attributes);
return !result.IsUndefined || base.SetProperty(name, value, attributes);
}
/// <summary>
/// Gets the item handles.
/// </summary>
/// <param name="session">The session.</param>
/// <param name="itemIds">The item ids.</param>
/// <param name="clientHandles">The client handles.</param>
/// <param name="validateOnly">if set to <c>true</c> handles are not created and item ids are only validated.</param>
/// <returns>The handles containing any error information.</returns>
public HdaItemHandle[] GetItemHandles(Session session, string[] itemIds, int[] clientHandles, bool validateOnly)
{
HdaItemHandle[] handles = new HdaItemHandle[itemIds.Length];
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
for (int ii = 0; ii < itemIds.Length; ii++)
{
InternalHandle handle = new InternalHandle();
handles[ii] = handle;
if (clientHandles != null)
{
handle.ClientHandle = clientHandles[ii];
}
string itemId = itemIds[ii];
if (String.IsNullOrEmpty(itemId))
{
handle.Error = ResultIds.E_INVALIDITEMID;
continue;
}
// check if item has already been assigned.
Item item = null;
if (!validateOnly)
{
lock (m_lock)
{
if (m_items.TryGetValue(itemId, out item))
{
handle.NodeId = item.NodeId;
handle.ServerHandle = ++m_lastServerHandle;
handle.Item = item;
item.Refs++;
m_handles[handle.ServerHandle] = handle;
Utils.Trace("Created Handle: {0} {1}", handle.ServerHandle, handle.NodeId);
continue;
}
}
}
// create a new item.
handle.Item = item = new Item();
item.ItemId = itemId;
handle.Error = ResultIds.S_OK; // assume valid for no - set to an error when detected.
handle.NodeId = item.NodeId = m_mapper.GetRemoteNodeId(itemId);
nodesToRead.Add(Construct(handle, Attributes.UserAccessLevel));
nodesToRead.Add(Construct(handle, Attributes.DisplayName));
nodesToRead.Add(Construct(handle, Attributes.Description));
nodesToRead.Add(Construct(handle, Attributes.DataType));
nodesToRead.Add(Construct(handle, Attributes.ValueRank));
nodesToRead.Add(Construct(handle, Attributes.Historizing));
}
// check if nothing to do.
if (nodesToRead.Count == 0)
{
return(handles);
}
DataValueCollection values = null;
DiagnosticInfoCollection diagnosticInfos = null;
// read values from the UA server.
session.Read(
null,
0,
TimestampsToReturn.Neither,
nodesToRead,
out values,
out diagnosticInfos);
// validate response from the UA server.
ClientBase.ValidateResponse(values, nodesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead);
// assign a local handle to all valid items.
NodeIdCollection nodesToRegister = new NodeIdCollection();
List <InternalHandle> items = new List <InternalHandle>();
for (int ii = 0; ii < nodesToRead.Count; ii++)
{
InternalHandle handle = (InternalHandle)nodesToRead[ii].Handle;
DataValue value = values[ii];
Item item = handle.Item;
// check status codes.
if (StatusCode.IsBad(value.StatusCode))
{
// description is an optional attribute.
if (nodesToRead[ii].AttributeId != Attributes.Description)
{
handle.Error = ResultIds.E_UNKNOWNITEMID;
}
continue;
}
// check access level.
if (nodesToRead[ii].AttributeId == Attributes.UserAccessLevel)
{
byte accessLevel = value.GetValue <byte>(AccessLevels.None);
if ((accessLevel & AccessLevels.HistoryRead) == 0)
{
handle.Error = ResultIds.E_UNKNOWNITEMID;
continue;
}
}
// save attribute.
switch (nodesToRead[ii].AttributeId)
{
case Attributes.DisplayName: { item.DisplayName = value.GetValue <LocalizedText>(null); break; }
case Attributes.Description: { item.Description = value.GetValue <LocalizedText>(null); break; }
case Attributes.DataType: { item.DataType = value.GetValue <NodeId>(null); break; }
case Attributes.ValueRank: { item.ValueRank = value.GetValue <int>(ValueRanks.Scalar); break; }
case Attributes.Historizing: { item.Historizing = value.GetValue <bool>(false); break; }
}
// should have all item metadata when processing the historizing attribute result.
if (nodesToRead[ii].AttributeId == Attributes.Historizing)
{
// check for a fatal error with one or more mandatory attributes.
if (handle.Error != ResultIds.S_OK)
{
continue;
}
BuiltInType builtInType = DataTypes.GetBuiltInType(item.DataType, session.TypeTree);
item.RemoteType = new TypeInfo(builtInType, item.ValueRank);
if (!validateOnly)
{
nodesToRegister.Add(item.NodeId);
items.Add(handle);
lock (m_lock)
{
m_items[handle.Item.ItemId] = handle.Item;
handle.ServerHandle = ++m_lastServerHandle;
handle.NodeId = handle.Item.NodeId;
handle.Item.Refs++;
m_handles[handle.ServerHandle] = handle;
Utils.Trace("Created Handle: {0} {1}", handle.ServerHandle, handle.NodeId);
}
}
}
}
return(handles);
}
public SuspendedHandleContext(string path, InternalHandle handle)
{
this.path = path;
this.handle = handle;
}
public virtual InternalHandle NamedPropertySetter(ref string propertyName, InternalHandle value)
{
return NamedPropertySetter(ref propertyName, value, V8PropertyAttributes.Undefined);
}
/// <summary>
/// JavaScript callback. Returns current editor's syntax mode.
/// </summary>
public InternalHandle GetSyntax(
V8Engine engine,
bool isConstructCall,
InternalHandle self,
params InternalHandle[] args)
{
return engine.CreateValue(_syntax);
}
/// <summary>
/// If the function object has a function property in itself (usually considered a static property in theory), you can use this to invoke it.
/// </summary>
public override InternalHandle Call(string functionName, InternalHandle _this, params InternalHandle[] args)
{
if (functionName.IsNullOrWhiteSpace()) throw new ArgumentNullException("functionName (cannot be null, empty, or only whitespace)");
return _Handle.Call(functionName, _this, args); // (if a function name exists, then it is a request to get a property name on the object as a function [and not to use this function object itself])
}
// --------------------------------------------------------------------------------------------------------------------
/// <summary>
/// Calls an object property with a given name on a specified object as a function and returns the result.
/// The '_this' property is the "this" object within the function when called.
/// </summary>
public virtual InternalHandle Call(string functionName, InternalHandle _this, params InternalHandle[] args)
{
return HandleInternal.HandleInternal.Call(functionName, _this, args);
}
// (For calling '.KeepTrack()' on an engine call expression that returns an 'InternalHandle' in order to dispose of it on the native side when done) static Expression _KeepTrack(InternalHandle currentHandle, Expression internalHandleValue) => Expression.Call(internalHandleValue, ((Func <InternalHandle>)currentHandle.KeepTrack).Method);
/// <summary>
/// Calls the underlying object as a function.
/// The '_this' parameter is the "this" reference within the function when called.
/// </summary>
public virtual InternalHandle Call(InternalHandle _this, params InternalHandle[] args)
{
return HandleInternal.HandleInternal.Call(_this, args);
}