// Call a pattern instance method with only in-params
protected void CallMethod(UiaMethodInfoHelper methodInfo, params object[] methodParams)
{
// Create and init a parameter list
var paramList = new UiaParameterListHelper(methodInfo);
paramList.Initialize(methodParams);
// Call through
PatternInstance.CallMethod(methodInfo.Index, paramList.Data, paramList.Count);
}
// Call a pattern instance method with only in-params
protected void CallMethod(UiaMethodInfoHelper methodInfo, params object[] methodParams)
{
// Create and init a parameter list
var paramList = new UiaParameterListHelper(methodInfo);
paramList.Initialize(methodParams);
// Call through
PatternInstance.CallMethod(methodInfo.Index, paramList.Data, paramList.Count);
}
// Construct a parameter list from a method info structure
public UiaParameterListHelper(UiaMethodInfoHelper methodInfo)
{
foreach (var inParamType in methodInfo.InParamTypes)
{
_uiaParams.Add(new UiaParameterHelper(inParamType));
}
foreach (var outParamType in methodInfo.OutParamTypes)
{
_uiaParams.Add(new UiaParameterHelper(outParamType));
}
}
// Construct a parameter list from a method info structure
public UiaParameterListHelper(UiaMethodInfoHelper methodInfo)
{
foreach (var inParamType in methodInfo.InParamTypes)
{
_uiaParams.Add(new UiaParameterHelper(inParamType));
}
foreach (var outParamType in methodInfo.OutParamTypes)
{
_uiaParams.Add(new UiaParameterHelper(outParamType));
}
}
// Get a current property value by calling a method, rather than by using GetProperty
protected object GetCurrentPropertyValueViaMethod(UiaMethodInfoHelper methodInfo)
{
// Create and init a parameter list
var paramList = new UiaParameterListHelper(methodInfo);
Debug.Assert(paramList.Count == 1);
// Call through
PatternInstance.CallMethod(methodInfo.Index, paramList.Data, paramList.Count);
// Return the out-parameter
return paramList[0];
}
// Get a current property value by calling a method, rather than by using GetProperty
protected object GetCurrentPropertyValueViaMethod(UiaMethodInfoHelper methodInfo)
{
// Create and init a parameter list
var paramList = new UiaParameterListHelper(methodInfo);
Debug.Assert(paramList.Count == 1);
// Call through
PatternInstance.CallMethod(methodInfo.Index, paramList.Data, paramList.Count);
// Return the out-parameter
return(paramList[0]);
}
private void CallMethod(IInvocation invocation, UiaMethodInfoHelper methodHelper)
{
if (!methodHelper.SupportsDispatch)
{
throw new InvalidOperationException("Called method {0} doesn't support automatic metadata-driven dispatch. You have to modify schema in order to use this feature so that corresponding UiaMethodInfoHelper supports dispatch.");
}
var paramList = new UiaParameterListHelper(methodHelper);
// 1. Fill In params to paramList from invocation arguments
// we're using the fact that In params are always going before out params, so we may just go through 0..(cInParameters-1)
for (int i = 0; i < methodHelper.Data.cInParameters; i++)
{
var desc = methodHelper.PatternMethodParamDescriptions[i];
var idx = methodHelper.GetProviderMethodArgumentIndex(desc.Name);
paramList[i] = invocation.Arguments[idx];
}
// 2. Call patternInstance method
NativeMethods.WrapUiaComCall(() => _patternInstance.CallMethod(methodHelper.Index, paramList.Data, paramList.Count));
// 3. Fill Out params back to invocation from paramList
for (int i = (int)methodHelper.Data.cInParameters; i < methodHelper.Data.cInParameters + methodHelper.Data.cOutParameters; i++)
{
object value = paramList[i];
var desc = methodHelper.PatternMethodParamDescriptions[i];
if (desc.Name == UiaTypesHelper.RetParamUnspeakableName)
{
if (invocation.Method.ReturnType == typeof(AutomationElement))
{
value = AutomationElement.Wrap((IUIAutomationElement)value);
}
invocation.ReturnValue = value;
}
else
{
var idx = methodHelper.GetProviderMethodArgumentIndex(desc.Name);
if (invocation.Method.GetParameters()[idx].ParameterType.GetElementType() == typeof(AutomationElement))
{
value = AutomationElement.Wrap((IUIAutomationElement)value);
}
invocation.Arguments[idx] = value;
}
}
}
private void CallMethod(IInvocation invocation, UiaMethodInfoHelper methodHelper)
{
if (!methodHelper.SupportsDispatch)
throw new InvalidOperationException("Called method {0} doesn't support automatic metadata-driven dispatch. You have to modify schema in order to use this feature so that corresponding UiaMethodInfoHelper supports dispatch.");
var paramList = new UiaParameterListHelper(methodHelper);
// 1. Fill In params to paramList from invocation arguments
// we're using the fact that In params are always going before out params, so we may just go through 0..(cInParameters-1)
for (int i = 0; i < methodHelper.Data.cInParameters; i++)
{
var desc = methodHelper.PatternMethodParamDescriptions[i];
var idx = methodHelper.GetProviderMethodArgumentIndex(desc.Name);
paramList[i] = invocation.Arguments[idx];
}
// 2. Call patternInstance method
NativeMethods.WrapUiaComCall(() => _patternInstance.CallMethod(methodHelper.Index, paramList.Data, paramList.Count));
// 3. Fill Out params back to invocation from paramList
for (int i = (int)methodHelper.Data.cInParameters; i < methodHelper.Data.cInParameters + methodHelper.Data.cOutParameters; i++)
{
object value = paramList[i];
var desc = methodHelper.PatternMethodParamDescriptions[i];
if (desc.Name == UiaTypesHelper.RetParamUnspeakableName)
{
if (invocation.Method.ReturnType == typeof(AutomationElement))
value = AutomationElement.Wrap((IUIAutomationElement)value);
invocation.ReturnValue = value;
}
else
{
var idx = methodHelper.GetProviderMethodArgumentIndex(desc.Name);
if (invocation.Method.GetParameters()[idx].ParameterType.GetElementType() == typeof(AutomationElement))
value = AutomationElement.Wrap((IUIAutomationElement)value);
invocation.Arguments[idx] = value;
}
}
}
// Call a pattern instance method with this parameter list
protected void CallMethod(UiaMethodInfoHelper methodInfo, UiaParameterListHelper paramList)
{
PatternInstance.CallMethod(methodInfo.Index, paramList.Data, paramList.Count);
}
/// <summary>
/// Add a method to this pattern
/// </summary>
/// <param name="method"></param>
public void AddMethod(UiaMethodInfoHelper method)
{
_methods.Add(method);
}
// Call a pattern instance method with this parameter list
protected void CallMethod(UiaMethodInfoHelper methodInfo, UiaParameterListHelper paramList)
{
PatternInstance.CallMethod(methodInfo.Index, paramList.Data, paramList.Count);
}
/// <summary>
/// Add a method to this pattern
/// </summary>
/// <param name="method"></param>
public void AddMethod(UiaMethodInfoHelper method)
{
_methods.Add(method);
}