public static IAutomationBridge SetUpEnvironment()
{
Type interopProviderType = typeof(AutomationInteropProvider);
// Set the bridge assembly name to a value that will
// fail when the static constructor attempts to load it.
Environment.SetEnvironmentVariable("MONO_UIA_BRIDGE",
"Ignore this intentional error");
// Reset element IDs to 0 for predictable results
Type providerWrapperType = Type.GetType("Mono.UIAutomation.UiaDbusBridge.Wrappers.ProviderElementWrapper, UiaDbusBridge, Version=1.0.0.0, Culture=neutral, PublicKeyToken=f4ceacb585d99812");
FieldInfo idCountField =
providerWrapperType.GetField("idCount", BindingFlags.NonPublic | BindingFlags.Static);
idCountField.SetValue(null, 0);
// Inject a UiaDbusBridge that we have a reference to.
Type bridgeType = Type.GetType("Mono.UIAutomation.UiaDbusBridge.AutomationBridge, UiaDbusBridge, Version=1.0.0.0, Culture=neutral, PublicKeyToken=f4ceacb585d99812");
IAutomationBridge bridge = (IAutomationBridge)Activator.CreateInstance(bridgeType);
FieldInfo bridgeField =
interopProviderType.GetField("bridges", BindingFlags.NonPublic
| BindingFlags.Static);
List <IAutomationBridge> bridges = new List <IAutomationBridge> ();
bridges.Add(bridge);
bridgeField.SetValue(null, bridges);
bridge.Initialize();
return(bridge);
}
private static IAutomationBridge GetAutomationBridge(string bridgeAssemblyName)
{
Assembly bridgeAssembly = null;
try {
bridgeAssembly = Assembly.Load(bridgeAssemblyName);
} catch (Exception e) {
Console.WriteLine(string.Format("Error loading UIA bridge ({0}): {1}",
bridgeAssemblyName,
e));
return(null);
}
Type bridgeType = null;
// Quickie inefficent implementation
Type bridgeInterfaceType = typeof(IAutomationBridge);
foreach (Type type in bridgeAssembly.GetTypes())
{
if (bridgeInterfaceType.IsAssignableFrom(type))
{
bridgeType = type;
break;
}
}
if (bridgeType == null)
{
Console.WriteLine("No UIA bridge found in assembly: " +
bridgeAssemblyName);
return(null);
}
try {
IAutomationBridge bridge
= (IAutomationBridge)Activator.CreateInstance(bridgeType);
if (!bridge.IsAccessibilityEnabled)
{
return(null);
}
bridge.Initialize();
return(bridge);
} catch (Exception e) {
Console.WriteLine("Failed to load UIA bridge: " + e);
return(null);
}
}