/// <summary>
/// Executes JavaScript in the context of the currently selected frame or window.
/// </summary>
/// <param name="script">The JavaScript code to execute.</param>
/// <param name="args">The arguments to the script.</param>
/// <returns>The value returned by the script.</returns>
/// <remarks>
/// <para>
/// The <see cref="ExecuteScript"/>method executes JavaScript in the context of
/// the currently selected frame or window. This means that "document" will refer
/// to the current document. If the script has a return value, then the following
/// steps will be taken:
/// </para>
/// <para>
/// <list type="bullet">
/// <item><description>For an HTML element, this method returns a <see cref="IWebElement"/></description></item>
/// <item><description>For a number, a <see cref="System.Int64"/> is returned</description></item>
/// <item><description>For a boolean, a <see cref="System.Boolean"/> is returned</description></item>
/// <item><description>For all other cases a <see cref="System.String"/> is returned.</description></item>
/// <item><description>For an array,we check the first element, and attempt to return a
/// <see cref="List{T}"/> of that type, following the rules above. Nested lists are not
/// supported.</description></item>
/// <item><description>If the value is null or there is no return value,
/// <see langword="null"/> is returned.</description></item>
/// </list>
/// </para>
/// <para>
/// Arguments must be a number (which will be converted to a <see cref="System.Int64"/>),
/// a <see cref="System.Boolean"/>, a <see cref="System.String"/> or a <see cref="IWebElement"/>.
/// An exception will be thrown if the arguments do not meet these criteria.
/// The arguments will be made available to the JavaScript via the "arguments" magic
/// variable, as if the function were called via "Function.apply"
/// </para>
/// </remarks>
public object ExecuteScript(string script, params object[] args)
{
object toReturn = null;
SafeScriptArgsHandle scriptArgsHandle = new SafeScriptArgsHandle();
WebDriverResult result = NativeDriverLibrary.Instance.NewScriptArgs(ref scriptArgsHandle, args.Length);
ResultHandler.VerifyResultCode(result, "Unable to create new script arguments array");
try
{
PopulateArguments(scriptArgsHandle, args);
script = "(function() { return function(){" + script + "};})();";
SafeScriptResultHandle scriptResultHandle = new SafeScriptResultHandle();
result = NativeDriverLibrary.Instance.ExecuteScript(handle, script, scriptArgsHandle, ref scriptResultHandle);
ResultHandler.VerifyResultCode(result, "Cannot execute script");
// Note that ExtractReturnValue frees the memory for the script result.
toReturn = ExtractReturnValue(scriptResultHandle);
}
finally
{
scriptArgsHandle.Dispose();
}
return(toReturn);
}
/// <summary>
/// Add to the script args.
/// </summary>
/// <param name="scriptArgs">Arguments to be added.</param>
/// <returns>A Driver result from adding it.</returns>
internal WebDriverResult AddToScriptArgs(SafeScriptArgsHandle scriptArgs)
{
WebDriverResult result = NativeDriverLibrary.Instance.AddElementScriptArg(scriptArgs, elementHandle);
ResultHandler.VerifyResultCode(result, "adding to script arguments");
return(result);
}
private static WebDriverResult PopulateArguments(SafeScriptArgsHandle scriptArgs, object[] args)
{
WebDriverResult result = WebDriverResult.Success;
foreach (object arg in args)
{
string stringArg = arg as string;
InternetExplorerWebElement webElementArg = arg as InternetExplorerWebElement;
if (stringArg != null)
{
result = NativeDriverLibrary.Instance.AddStringScriptArg(scriptArgs, stringArg);
}
else if (arg is bool)
{
bool param = (bool)arg;
result = NativeDriverLibrary.Instance.AddBooleanScriptArg(scriptArgs, !param ? 0 : 1);
}
else if (webElementArg != null)
{
result = webElementArg.AddToScriptArgs(scriptArgs);
}
else if (arg is int || arg is short || arg is long)
{
int param;
bool parseSucceeded = int.TryParse(arg.ToString(), out param);
if (!parseSucceeded)
{
throw new ArgumentException("Parameter is not recognized as an int: " + arg);
}
result = NativeDriverLibrary.Instance.AddNumberScriptArg(scriptArgs, param);
}
else if (arg is float || arg is double)
{
double param;
bool parseSucceeded = double.TryParse(arg.ToString(), out param);
if (!parseSucceeded)
{
throw new ArgumentException("Parameter is not of recognized as a double: " + arg);
}
result = NativeDriverLibrary.Instance.AddDoubleScriptArg(scriptArgs, param);
}
else
{
throw new ArgumentException("Parameter is not of recognized type: " + arg);
}
ResultHandler.VerifyResultCode(result, "Unable to add argument: " + arg);
}
return(result);
}
/// <summary>
/// Executes JavaScript in the context of the currently selected frame or window.
/// </summary>
/// <param name="script">The JavaScript code to execute.</param>
/// <param name="args">The arguments to the script.</param>
/// <returns>The value returned by the script.</returns>
/// <remarks>
/// <para>
/// The <see cref="ExecuteScript"/>method executes JavaScript in the context of
/// the currently selected frame or window. This means that "document" will refer
/// to the current document. If the script has a return value, then the following
/// steps will be taken:
/// </para>
/// <para>
/// <list type="bullet">
/// <item><description>For an HTML element, this method returns a <see cref="IWebElement"/></description></item>
/// <item><description>For a number, a <see cref="System.Int64"/> is returned</description></item>
/// <item><description>For a boolean, a <see cref="System.Boolean"/> is returned</description></item>
/// <item><description>For all other cases a <see cref="System.String"/> is returned.</description></item>
/// <item><description>For an array,we check the first element, and attempt to return a
/// <see cref="List{T}"/> of that type, following the rules above. Nested lists are not
/// supported.</description></item>
/// <item><description>If the value is null or there is no return value,
/// <see langword="null"/> is returned.</description></item>
/// </list>
/// </para>
/// <para>
/// Arguments must be a number (which will be converted to a <see cref="System.Int64"/>),
/// a <see cref="System.Boolean"/>, a <see cref="System.String"/> or a <see cref="IWebElement"/>.
/// An exception will be thrown if the arguments do not meet these criteria.
/// The arguments will be made available to the JavaScript via the "arguments" magic
/// variable, as if the function were called via "Function.apply"
/// </para>
/// </remarks>
public object ExecuteScript(string script, params object[] args)
{
object toReturn = null;
SafeScriptArgsHandle scriptArgsHandle = new SafeScriptArgsHandle();
WebDriverResult result = NativeDriverLibrary.Instance.NewScriptArgs(ref scriptArgsHandle, args.Length);
ResultHandler.VerifyResultCode(result, "Unable to create new script arguments array");
try
{
PopulateArguments(scriptArgsHandle, args);
script = "(function() { return function(){" + script + "};})();";
SafeScriptResultHandle scriptResultHandle = new SafeScriptResultHandle();
result = NativeDriverLibrary.Instance.ExecuteScript(handle, script, scriptArgsHandle, ref scriptResultHandle);
ResultHandler.VerifyResultCode(result, "Cannot execute script");
// Note that ExtractReturnValue frees the memory for the script result.
toReturn = ExtractReturnValue(scriptResultHandle);
}
finally
{
scriptArgsHandle.Dispose();
}
return toReturn;
}
internal static extern WebDriverResult wdAddStringScriptArg(SafeScriptArgsHandle scriptArgs, string arg);
internal static extern WebDriverResult wdNewScriptArgs(ref SafeScriptArgsHandle scriptArgs, int maxLength);
internal static extern WebDriverResult wdAddNumberScriptArg(SafeScriptArgsHandle scriptArgs, long param);
internal static extern WebDriverResult wdAddElementScriptArg(SafeScriptArgsHandle scriptArgs, SafeInternetExplorerWebElementHandle handle);
internal static extern WebDriverResult wdAddDoubleScriptArg(SafeScriptArgsHandle scriptArgs, double param);
internal static extern WebDriverResult wdExecuteScript(SafeInternetExplorerDriverHandle driver, string script, SafeScriptArgsHandle scriptArgs, ref SafeScriptResultHandle scriptRes);
/// <summary>
/// Executes arbitrary JavaScript on the page.
/// </summary>
/// <param name="driverHandle">A handle to the instance of the <see cref="InternetExplorerDriver"/> class.</param>
/// <param name="script">The script to run.</param>
/// <param name="scriptArgsHandle">A handle to the instance of the script arguments.</param>
/// <param name="scriptResultHandle">A handle to the result of the script.</param>
/// <returns>A <see cref="WebDriverResult"/> value indicating success or failure.</returns>
internal WebDriverResult ExecuteScript(SafeInternetExplorerDriverHandle driverHandle, string script, SafeScriptArgsHandle scriptArgsHandle, ref SafeScriptResultHandle scriptResultHandle)
{
IntPtr functionPointer = NativeMethods.GetProcAddress(nativeLibraryHandle, ExecuteScriptFunctionName);
ExecuteScriptFunction executeFunction = Marshal.GetDelegateForFunctionPointer(functionPointer, typeof(ExecuteScriptFunction)) as ExecuteScriptFunction;
WebDriverResult result = executeFunction(driverHandle, script, scriptArgsHandle, ref scriptResultHandle);
return result;
}
/// <summary>
/// Adds a string argument to the set of script arguments.
/// </summary>
/// <param name="scriptArgsHandle">A handle to the instance of the script arguments.</param>
/// <param name="argument">The argument to add.</param>
/// <returns>A <see cref="WebDriverResult"/> value indicating success or failure.</returns>
internal WebDriverResult AddStringScriptArg(SafeScriptArgsHandle scriptArgsHandle, string argument)
{
IntPtr functionPointer = NativeMethods.GetProcAddress(nativeLibraryHandle, AddStringScriptArgFunctionName);
StringParameterScriptArgsFunction addScriptArgFunction = Marshal.GetDelegateForFunctionPointer(functionPointer, typeof(StringParameterScriptArgsFunction)) as StringParameterScriptArgsFunction;
WebDriverResult result = addScriptArgFunction(scriptArgsHandle, argument);
return result;
}
/// <summary>
/// Adds an element argument to the set of script arguments.
/// </summary>
/// <param name="scriptArgsHandle">A handle to the instance of the script arguments.</param>
/// <param name="argument">The argument to add.</param>
/// <returns>A <see cref="WebDriverResult"/> value indicating success or failure.</returns>
internal WebDriverResult AddElementScriptArg(SafeScriptArgsHandle scriptArgsHandle, SafeInternetExplorerWebElementHandle argument)
{
IntPtr functionPointer = NativeMethods.GetProcAddress(nativeLibraryHandle, AddElementScriptArgFunctionName);
ElementParameterScriptArgsFunction addScriptArgFunction = Marshal.GetDelegateForFunctionPointer(functionPointer, typeof(ElementParameterScriptArgsFunction)) as ElementParameterScriptArgsFunction;
WebDriverResult result = addScriptArgFunction(scriptArgsHandle, argument);
return result;
}
/// <summary>
/// Creates a new set of script arguments.
/// </summary>
/// <param name="scriptArgsHandle">A handle to the instance of the script arguments.</param>
/// <param name="maxLength">The maximum number of arguments to allocate.</param>
/// <returns>A <see cref="WebDriverResult"/> value indicating success or failure.</returns>
internal WebDriverResult NewScriptArgs(ref SafeScriptArgsHandle scriptArgsHandle, int maxLength)
{
IntPtr functionPointer = NativeMethods.GetProcAddress(nativeLibraryHandle, NewScriptArgsFunctionName);
ScriptArgsReturningFunction newScriptArgsFunction = Marshal.GetDelegateForFunctionPointer(functionPointer, typeof(ScriptArgsReturningFunction)) as ScriptArgsReturningFunction;
WebDriverResult result = newScriptArgsFunction(ref scriptArgsHandle, maxLength);
return result;
}
private static WebDriverResult PopulateArguments(SafeScriptArgsHandle scriptArgs, object[] args)
{
WebDriverResult result = WebDriverResult.Success;
foreach (object arg in args)
{
string stringArg = arg as string;
InternetExplorerWebElement webElementArg = arg as InternetExplorerWebElement;
if (stringArg != null)
{
result = NativeDriverLibrary.Instance.AddStringScriptArg(scriptArgs, stringArg);
}
else if (arg is bool)
{
bool param = (bool)arg;
result = NativeDriverLibrary.Instance.AddBooleanScriptArg(scriptArgs, !param ? 0 : 1);
}
else if (webElementArg != null)
{
result = webElementArg.AddToScriptArgs(scriptArgs);
}
else if (arg is int || arg is short || arg is long)
{
int param;
bool parseSucceeded = int.TryParse(arg.ToString(), out param);
if (!parseSucceeded)
{
throw new ArgumentException("Parameter is not recognized as an int: " + arg);
}
result = NativeDriverLibrary.Instance.AddNumberScriptArg(scriptArgs, param);
}
else if (arg is float || arg is double)
{
double param;
bool parseSucceeded = double.TryParse(arg.ToString(), out param);
if (!parseSucceeded)
{
throw new ArgumentException("Parameter is not of recognized as a double: " + arg);
}
result = NativeDriverLibrary.Instance.AddDoubleScriptArg(scriptArgs, param);
}
else
{
throw new ArgumentException("Parameter is not of recognized type: " + arg);
}
ResultHandler.VerifyResultCode(result, "Unable to add argument: " + arg);
}
return result;
}
/// <summary>
/// Add to the script args.
/// </summary>
/// <param name="scriptArgs">Arguments to be added.</param>
/// <returns>A Driver result from adding it.</returns>
internal WebDriverResult AddToScriptArgs(SafeScriptArgsHandle scriptArgs)
{
WebDriverResult result = NativeDriverLibrary.Instance.AddElementScriptArg(scriptArgs, elementHandle);
ResultHandler.VerifyResultCode(result, "adding to script arguments");
return result;
}
internal static extern WebDriverResult wdAddBooleanScriptArg(SafeScriptArgsHandle scriptArgs, int boolean);
