/// <summary>
/// Constructs an instance of the Active Script engine
/// </summary>
/// <param name="engineMode">JS engine mode</param>
/// <param name="enableDebugging">Flag for whether to enable script debugging features</param>
/// <param name="useEcmaScript5Polyfill">Flag for whether to use the ECMAScript 5 Polyfill</param>
/// <param name="useJson2Library">Flag for whether to use the JSON2 library</param>
protected ActiveScriptJsEngineBase(JsEngineMode engineMode, bool enableDebugging,
bool useEcmaScript5Polyfill, bool useJson2Library)
: base(engineMode)
{
string clsid;
string lowerIeVersion;
ScriptLanguageVersion languageVersion;
if (_engineMode == JsEngineMode.ChakraActiveScript)
{
clsid = ClassId.Chakra;
lowerIeVersion = "9";
languageVersion = ScriptLanguageVersion.EcmaScript5;
}
else if (_engineMode == JsEngineMode.Classic)
{
clsid = ClassId.Classic;
lowerIeVersion = "6";
languageVersion = ScriptLanguageVersion.None;
}
else
{
throw new NotSupportedException();
}
_dispatcher.Invoke(() =>
{
try
{
_activeScriptWrapper = new ActiveScriptWrapper(clsid, languageVersion);
}
catch (Exception e)
{
throw new JsEngineLoadException(
string.Format(CommonStrings.Runtime_IeJsEngineNotLoaded,
_engineModeName, lowerIeVersion, e.Message), _engineModeName);
}
if (enableDebugging)
{
StartDebugging();
}
_activeScriptWrapper.SetScriptSite(new ScriptSite(this));
_activeScriptWrapper.InitNew();
_activeScriptWrapper.SetScriptState(ScriptState.Started);
InitScriptDispatch();
});
LoadResources(useEcmaScript5Polyfill, useJson2Library);
}
/// <summary>
/// Destroys object
/// </summary>
/// <param name="disposing">Flag, allowing destruction of
/// managed objects contained in fields of class</param>
private void Dispose(bool disposing)
{
if (_disposedFlag.Set())
{
_dispatcher.Invoke(() =>
{
if (_dispatch != null)
{
ComHelpers.ReleaseComObject(ref _dispatch, !disposing);
_dispatch = null;
}
if (_activeScriptWrapper != null)
{
_activeScriptWrapper.Dispose();
_activeScriptWrapper = null;
}
});
if (disposing)
{
if (_debuggingStarted && _debugDocuments != null)
{
foreach (UIntPtr debugDocumentKey in _debugDocuments.Keys)
{
var debugDocumentValue = _debugDocuments[debugDocumentKey];
debugDocumentValue.Close();
}
_debugDocuments.Clear();
}
if (_processDebugManagerWrapper != null)
{
_processDebugManagerWrapper.RemoveApplication(_debugApplicationCookie);
_debugApplicationWrapper.Close();
}
if (_hostItems != null)
{
_hostItems.Clear();
}
_lastException = null;
}
}
}