/// <summary>
/// Creates and returns a composite {@link ScriptResult} based on the two input {@link ScriptResult}s. This
/// method defines how the return values for multiple event handlers are combined during event capturing and
/// bubbling. The behavior of this method varies based on whether or not we are emulating IE.
/// </summary>
/// <param name="newResult">the new {@link ScriptResult} (may be <tt>null</tt>)</param>
/// <param name="originalResult">the original {@link ScriptResult} (may be <tt>null</tt>)</param>
/// <param name="ie">whether or not we are emulating IE</param>
/// <returns>a composite {@link ScriptResult}, based on the two input {@link ScriptResult}s</returns>
public static ScriptResult Combine(ScriptResult newResult, ScriptResult originalResult, bool ie)
{
Object jsResult;
IPage page;
// If we're emulating IE, the overall JavaScript return value is the last return value.
// If we're emulating FF, the overall JavaScript return value is false if the return value
// was false at any level.
if (ie)
{
if (newResult != null && !ScriptResult.IsUndefined(newResult))
{
jsResult = newResult.JavaScriptResult;
}
else if (originalResult != null)
{
jsResult = originalResult.JavaScriptResult;
}
else
{
jsResult = null;
}
}
else
{
if (ScriptResult.IsFalse(newResult))
{
jsResult = newResult.JavaScriptResult;
}
else if (originalResult != null)
{
jsResult = originalResult.JavaScriptResult;
}
else
{
jsResult = null;
}
}
// The new page is always the newest page.
if (newResult != null)
{
page = newResult.NewPage;
}
else if (originalResult != null)
{
page = originalResult.NewPage;
}
else
{
page = null;
}
// Build and return the composite script result.
if (jsResult == null && page == null)
{
return(null);
}
return(new ScriptResult(jsResult, page));
}
/// <summary>
/// Utility method testing if a script result is undefined (there was no return value).
/// </summary>
/// <param name="scriptResult">a script result (may be <tt>null</tt>)</param>
/// <returns><tt>true</tt> if <tt>scriptResult</tt> is undefined (there was no return value)</returns>
public static bool IsUndefined(ScriptResult scriptResult)
{
return(scriptResult != null && scriptResult.JavaScriptResult is Undefined);
}
/// <summary>
/// Utility method testing if a script result is <tt>false</tt>.
/// </summary>
/// <param name="scriptResult">a script result (may be <tt>null</tt>)</param>
/// <returns><tt>true</tt> if <tt>scriptResult</tt> is <tt>false</tt></returns>
public static bool IsFalse(ScriptResult scriptResult)
{
return(scriptResult != null && String.Equals(Boolean.FalseString, scriptResult.JavaScriptResult));
}
/// <summary>
/// Utility method testing if a script result is <tt>false</tt>.
/// </summary>
/// <param name="scriptResult">a script result (may be <tt>null</tt>)</param>
/// <returns><tt>true</tt> if <tt>scriptResult</tt> is <tt>false</tt></returns>
public static bool IsFalse(ScriptResult scriptResult)
{
return scriptResult != null && String.Equals(Boolean.FalseString, scriptResult.JavaScriptResult);
}
/// <summary>
/// Creates and returns a composite {@link ScriptResult} based on the two input {@link ScriptResult}s. This
/// method defines how the return values for multiple event handlers are combined during event capturing and
/// bubbling. The behavior of this method varies based on whether or not we are emulating IE.
/// </summary>
/// <param name="newResult">the new {@link ScriptResult} (may be <tt>null</tt>)</param>
/// <param name="originalResult">the original {@link ScriptResult} (may be <tt>null</tt>)</param>
/// <param name="ie">whether or not we are emulating IE</param>
/// <returns>a composite {@link ScriptResult}, based on the two input {@link ScriptResult}s</returns>
public static ScriptResult Combine(ScriptResult newResult, ScriptResult originalResult, bool ie)
{
Object jsResult;
IPage page;
// If we're emulating IE, the overall JavaScript return value is the last return value.
// If we're emulating FF, the overall JavaScript return value is false if the return value
// was false at any level.
if (ie)
{
if (newResult != null && !ScriptResult.IsUndefined(newResult))
{
jsResult = newResult.JavaScriptResult;
}
else if (originalResult != null)
{
jsResult = originalResult.JavaScriptResult;
}
else
{
jsResult = null;
}
}
else
{
if (ScriptResult.IsFalse(newResult))
{
jsResult = newResult.JavaScriptResult;
}
else if (originalResult != null)
{
jsResult = originalResult.JavaScriptResult;
}
else
{
jsResult = null;
}
}
// The new page is always the newest page.
if (newResult != null)
{
page = newResult.NewPage;
}
else if (originalResult != null)
{
page = originalResult.NewPage;
}
else
{
page = null;
}
// Build and return the composite script result.
if (jsResult == null && page == null)
{
return null;
}
return new ScriptResult(jsResult, page);
}
/// <summary>
/// Utility method testing if a script result is undefined (there was no return value).
/// </summary>
/// <param name="scriptResult">a script result (may be <tt>null</tt>)</param>
/// <returns><tt>true</tt> if <tt>scriptResult</tt> is undefined (there was no return value)</returns>
public static bool IsUndefined(ScriptResult scriptResult)
{
return scriptResult != null && scriptResult.JavaScriptResult is Undefined;
}
