static bool ValidateSystemUserInterfaceItem(IntPtr sender, IntPtr sel, IntPtr item)
{
var actionHandle = Messaging.IntPtr_objc_msgSend(item, selGetAction);
var control = Runtime.GetNSObject(sender);
var handler = GetHandler(control) as MacView <TControl, TWidget, TCallback>;
if (handler != null)
{
Command command;
if (handler.systemActions != null && actionHandle != IntPtr.Zero && handler.systemActions.TryGetValue(actionHandle, out command))
{
if (command != null)
{
return(command.Enabled);
}
}
}
var objClass = ObjCExtensions.object_getClass(sender);
if (objClass == IntPtr.Zero)
{
return(false);
}
var superClass = ObjCExtensions.class_getSuperclass(objClass);
return
(superClass != IntPtr.Zero &&
ObjCExtensions.ClassInstancesRespondToSelector(superClass, sel) &&
Messaging.bool_objc_msgSendSuper_IntPtr(control.SuperHandle, sel, item));
}
public bool HasMethod(IntPtr selector, object control)
{
var type = control.GetType();
var classHandle = Class.GetHandle(type);
return(ObjCExtensions.GetMethod(classHandle, selector) != IntPtr.Zero);
}
public void AddMethod(IntPtr selector, Delegate action, string arguments, object control)
{
var type = control.GetType();
#if OSX
if (!typeof(IMacControl).IsAssignableFrom(type))
throw new EtoException(string.Format("Control '{0}' does not inherit from IMacControl", type));
#endif
var classHandle = Class.GetHandle(type);
ObjCExtensions.AddMethod(classHandle, selector, action, arguments);
}
public void AddMethod(IntPtr selector, Delegate action, string arguments, object control)
{
var type = control.GetType();
#if OSX
if (!typeof(IMacControl).IsAssignableFrom(type))
{
throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, "Control '{0}' does not inherit from IMacControl", type));
}
if (((IMacControl)control).WeakHandler?.Target == null)
{
throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, "Control '{0}' has a null handler", type));
}
#endif
var classHandle = Class.GetHandle(type);
ObjCExtensions.AddMethod(classHandle, selector, action, arguments);
}
public bool EnsureTextInputImplemented(NSView view = null)
{
view = view ?? TextInputControl;
// determine whether we need to call InterpretKeyEvents ourselves or if it is already handled by the super class (e.g. NSTextView)
// for NSTextField (TextBox, etc), we handle the TextInput event via MacFieldEditor
TextInputImplemented = !ObjCExtensions.ClassConformsToProtocol(view.GetSuperclass(), MacViewTextInput.NSTextInputClientProtocol_Handle);
// if it already conforms to the protocol, add the insertText:replacementRange method only
if (view.ConformsToProtocol(MacViewTextInput.NSTextInputClientProtocol_Handle))
{
AddMethod(MacView.selInsertTextReplacementRange, MacView.TriggerTextInput_Delegate, EtoEnvironment.Is64BitProcess ? "v@:@{NSRange=QQ}" : "v@:@{NSRange=II}");
return(false);
}
// Debug.WriteLine($"Adding TextInputClient to {view.GetType()}, Widget: {Widget.GetType()}");
// add the NSTextInputClient protocol to the class
var cls = Class.GetHandle(view.GetType());
ObjCExtensions.ClassAddProtocol(cls, MacViewTextInput.NSTextInputClientProtocol_Handle);
// add required methods for the NSTextInputClient protocol
AddMethod(MacViewTextInput.HasMarkedText_Selector, MacViewTextInput.HasMarkedText_Delegate, "B@:", view);
AddMethod(MacViewTextInput.MarkedRange_Selector, MacViewTextInput.MarkedRange_Delegate, "{NSRange=QQ}@:", view);
AddMethod(MacViewTextInput.SelectedRange_Selector, MacViewTextInput.SelectedRange_Delegate, "{NSRange=QQ}@:", view);
AddMethod(MacViewTextInput.SetMarkedText_Selector, MacViewTextInput.SetMarkedText_Delegate, "v@:@{NSRange=QQ}{NSRange=QQ}", view);
AddMethod(MacViewTextInput.UnmarkText_Selector, MacViewTextInput.UnmarkText_Delegate, "v@:", view);
AddMethod(MacViewTextInput.ValidAttributesForMarkedText_Selector, MacViewTextInput.ValidAttributesForMarkedText_Delegate, "@@:", view);
AddMethod(MacViewTextInput.AttributedStringForProposedRange_Selector, MacViewTextInput.AttributedStringForProposedRange_Delegate, "@@:{NSRange=QQ}^{NSRange=QQ}", view);
AddMethod(MacViewTextInput.CharacterIndexForPoint_Selector, MacViewTextInput.CharacterIndexForPoint_Delegate, "Q@:{CGPoint=gg}", view);
AddMethod(MacViewTextInput.FirstRectForCharacterRange_Selector, MacViewTextInput.FirstRectForCharacterRange_Delegate, "{CGRect=gggg}@:{NSRange=QQ}^{NSRange=QQ}", view);
AddMethod(MacViewTextInput.DoCommandBySelector_Selector, MacViewTextInput.DoCommandBySelector_Delegate, "v@:#", view);
AddMethod(MacView.selInsertTextReplacementRange, MacView.TriggerTextInput_Delegate, "v@:@{NSRange=QQ}", view);
return(true);
}
static MacLabel()
{
supportsSingleLine = ObjCExtensions.ClassInstancesRespondToSelector(Class.GetHandle("NSTextFieldCell"), Selector.GetHandle("setUsesSingleLineMode:"));
}