C# GeneratorContext.GenerateNewInstanceCode方法代码示例

		protected override void GenerateChildBuildCode (GeneratorContext ctx, CodeExpression parentVar, Widget wrapper)
		{
			if (wrapper.Wrapped == expander.LabelWidget) {
				CodeExpression var = ctx.GenerateNewInstanceCode (wrapper);
				CodeAssignStatement assign = new CodeAssignStatement (
					new CodePropertyReferenceExpression (
						parentVar,
						"LabelWidget"
					),
					var
				);
				ctx.Statements.Add (assign);
			} else
				base.GenerateChildBuildCode (ctx, parentVar, wrapper);
		}

		protected virtual void GenerateChildBuildCode (GeneratorContext ctx, CodeExpression parentVar, Widget wrapper)
		{
			ObjectWrapper childwrapper = ChildWrapper (wrapper);
			if (childwrapper != null) {
				ctx.Statements.Add (new CodeCommentStatement ("Container child " + Wrapped.Name + "." + childwrapper.Wrapped.GetType ()));
				CodeExpression var = ctx.GenerateNewInstanceCode (wrapper);
				CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (
					parentVar,
					"Add",
					var
				);
				ctx.Statements.Add (invoke);

				GenerateSetPacking (ctx, parentVar, var, childwrapper);
			}
		}

		protected override void GenerateChildBuildCode (GeneratorContext ctx, CodeExpression parentExp, Widget wrapper)
		{
			Gtk.Widget child = (Gtk.Widget) wrapper.Wrapped;
			
			if (notebook.PageNum (child) == -1) {
				// It's a tab
				
				ctx.Statements.Add (new CodeCommentStatement ("Notebook tab"));
				Gtk.Widget page = null;
				CodeExpression pageVar;
				
				// Look for the page widget contained in this tab
				for (int n=0; n < notebook.NPages; n++) {
					if (notebook.GetTabLabel (notebook.GetNthPage (n)) == child) {
						page = notebook.GetNthPage (n);
						break;
					}
				}
				
				// If the page contains a placeholder, generate a dummy page
				if (page is Stetic.Placeholder) {
					CodeVariableDeclarationStatement dvar = new CodeVariableDeclarationStatement (
						"Gtk.Label".ToGlobalTypeRef (),
						ctx.NewId (),
						new CodeObjectCreateExpression ("Gtk.Label".ToGlobalTypeRef ())
					);
					ctx.Statements.Add (dvar);
					ctx.Statements.Add (
						new CodeAssignStatement (
							new CodePropertyReferenceExpression (
								new CodeVariableReferenceExpression (dvar.Name),
								"Visible"
							),
							new CodePrimitiveExpression (true)
						)
					);
					ctx.Statements.Add (
						new CodeMethodInvokeExpression (
							parentExp,
							"Add",
							new CodeVariableReferenceExpression (dvar.Name)
						)
					);
					pageVar = new CodeVariableReferenceExpression (dvar.Name);
				} else
					pageVar = ctx.WidgetMap.GetWidgetExp (page);
				
				// Generate code for the tab
				CodeExpression var = ctx.GenerateNewInstanceCode (wrapper);
				
				// Assign the tab to the page
				CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (
					parentExp,
					"SetTabLabel",
					pageVar,
					var
				);
				ctx.Statements.Add (invoke);
				
				// Workaround for GTK bug. ShowAll is not propagated to tab labels.
				invoke = new CodeMethodInvokeExpression (
					var,
					"ShowAll"
				);
				ctx.Statements.Add (invoke);
			} else
				base.GenerateChildBuildCode (ctx, parentExp, wrapper);
		}

		protected override void GenerateChildBuildCode (GeneratorContext ctx, CodeExpression parentVar, Widget wrapper)
		{
			if (actionDialog != null && wrapper is Button) {
			
				// If this is the action area of a dialog, buttons must be added using AddActionWidget,
				// so they are properly registered.
				
				ObjectWrapper childwrapper = ChildWrapper (wrapper);
				Button button = wrapper as Button;
				
				if (childwrapper != null) {
					CodeExpression dialogVar = ctx.WidgetMap.GetWidgetExp (actionDialog);
					ctx.Statements.Add (new CodeCommentStatement ("Container child " + Wrapped.Name + "." + childwrapper.Wrapped.GetType ()));
					CodeExpression var = ctx.GenerateNewInstanceCode (wrapper);
					if (button.ResponseId != (int) Gtk.ResponseType.None) {
						CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (
							dialogVar,
							"AddActionWidget",
							var,
							new CodePrimitiveExpression (button.ResponseId)
						);
						ctx.Statements.Add (invoke);
					}
					else {
						CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (
							parentVar,
							"Add",
							var
						);
						ctx.Statements.Add (invoke);
					}
					GenerateSetPacking (ctx, parentVar, var, childwrapper);
				}
			} else
				base.GenerateChildBuildCode (ctx, parentVar, wrapper);
		}

		internal protected override void GenerateBuildCode (GeneratorContext ctx, CodeExpression var)
		{
			base.GenerateBuildCode (ctx, var);

			string text = button.Label;
			if (!string.IsNullOrEmpty (text)) {
				CodePropertyReferenceExpression cprop = new CodePropertyReferenceExpression (var, "Label");
				PropertyDescriptor prop = (PropertyDescriptor)this.ClassDescriptor ["Label"];
				bool trans = Type != ButtonType.StockItem && prop.IsTranslated (Wrapped);
				CodeExpression val = ctx.GenerateValue (text, typeof(string), trans);
				ctx.Statements.Add (new CodeAssignStatement (cprop, val));
			}

			if (Type == ButtonType.TextAndIcon) {
				var imageWidget = (Gtk.Image) button.Image;
				if (imageWidget != null) {
					Image imageWrapper = (Image)Widget.Lookup (imageWidget);
					var imgVar = ctx.GenerateNewInstanceCode (imageWrapper);
					var imgProp = new CodePropertyReferenceExpression (var, "Image");
					ctx.Statements.Add (new CodeAssignStatement (imgProp, imgVar));
				}
			}
		}