public void ExpressionEvaluator_UpdateSource_Simple()
{
var viewModel = new TestViewModel() { SubObject = new TestViewModel2() { Value = "hello" } };
var view = new RedwoodView()
{
DataContext = viewModel,
Children =
{
new HtmlGenericControl("html")
{
Children =
{
new TextBox()
{
ID = "txb"
}
.WithBinding(TextBox.TextProperty, new ValueBindingExpression("Value"))
}
}
.WithBinding(RedwoodBindableControl.DataContextProperty, new ValueBindingExpression("SubObject"))
}
};
var textbox = view.FindControl("txb") as TextBox;
var binding = textbox.GetBinding(TextBox.TextProperty) as ValueBindingExpression;
binding.UpdateSource("test", textbox, TextBox.TextProperty);
Assert.AreEqual("test", viewModel.SubObject.Value);
}
public void CommandResolver_Valid_SimpleTest()
{
var path = new[] { "A[0]" };
var command = "Test(StringToPass, _parent.NumberToPass)";
var testObject = new
{
A = new[]
{
new TestA() { StringToPass = "******" }
},
NumberToPass = 16
};
var viewRoot = new RedwoodView() { DataContext = testObject };
viewRoot.SetBinding(Validate.TargetProperty, new ValueBindingExpression("_root"));
var placeholder = new HtmlGenericControl("div");
placeholder.SetBinding(RedwoodBindableControl.DataContextProperty, new ValueBindingExpression(path[0]));
viewRoot.Children.Add(placeholder);
var button = new Button();
button.SetBinding(ButtonBase.ClickProperty, new CommandBindingExpression(command));
placeholder.Children.Add(button);
var resolver = new CommandResolver();
var context = new RedwoodRequestContext() { ViewModel = testObject };
context.ModelState.ValidationTargetPath = KnockoutHelper.GetValidationTargetExpression(button, true);
resolver.GetFunction(viewRoot, context, path, command).GetAction()();
Assert.AreEqual(testObject.NumberToPass, testObject.A[0].ResultInt);
Assert.AreEqual(testObject.A[0].ResultString, testObject.A[0].ResultString);
}
public void ExpressionEvaluator_Complex_EvaluateInRootDataContext()
{
var view = new RedwoodView()
{
DataContext = new TestViewModel() { SubObject = new TestViewModel2() { Value = "hello" } },
Children =
{
new HtmlGenericControl("html")
{
Children =
{
new TextBox()
{
ID = "txb"
}
}
}
.WithBinding(RedwoodBindableControl.DataContextProperty, new ValueBindingExpression("SubObject"))
}
};
var textbox = view.FindControl("txb") as TextBox;
var evaluator = new ExpressionEvaluator();
var result = evaluator.Evaluate(new ValueBindingExpression("Value"), RedwoodBindableControl.DataContextProperty, textbox);
Assert.IsInstanceOfType(result, typeof(string));
Assert.AreEqual("hello", result);
}
public async Task WriteViewModelResponse(RedwoodRequestContext context, RedwoodView view)
{
// return the response
context.OwinContext.Response.ContentType = "application/json; charset=utf-8";
var serializedViewModel = context.GetSerializedViewModel();
await context.OwinContext.Response.WriteAsync(serializedViewModel);
}
/// <summary>
/// Initializes the view model for the specified view.
/// </summary>
public object InitializeViewModel(RedwoodRequestContext context, RedwoodView view)
{
string viewModel;
if (!view.Directives.TryGetValue(Constants.ViewModelDirectiveName, out viewModel))
{
throw new Exception("Couldn't find a viewmodel for the specified view!"); // TODO: exception handling
}
var viewModelType = Type.GetType(viewModel);
if (viewModelType == null)
{
throw new Exception(string.Format("Couldn't create a class of type '{0}'!", viewModel)); // TODO: exception handling
}
return CreateViewModelInstance(viewModelType);
}
/// <summary>
/// Embeds the resource links in the page.
/// </summary>
private void EmbedResourceLinks(RedwoodView view)
{
var sections = view.GetThisAndAllDescendants()
.OfType<HtmlGenericControl>()
.Where(t => t.TagName == "head" || t.TagName == "body")
.OrderBy(t => t.TagName)
.ToList();
if (sections.Count != 2 || sections[0].TagName == sections[1].TagName)
{
throw new Exception("The page must have exactly one <head> and one <body> section!");
}
sections[0].Children.Add(new BodyResourceLinks());
sections[1].Children.Add(new HeadResourceLinks());
}
public void RenderPage(RedwoodRequestContext context, RedwoodView view)
{
// embed resource links
EmbedResourceLinks(view);
// prepare the render context
var renderContext = new RenderContext(context);
// get the HTML
using (var textWriter = new StringWriter())
{
var htmlWriter = new HtmlWriter(textWriter, context);
view.Render(htmlWriter, renderContext);
context.RenderedHtml = textWriter.ToString();
}
}
public void CommandResolver_CannotCallSetter()
{
var testObject = new TestA()
{
StringToPass = "******"
};
var viewRoot = new RedwoodView() { DataContext = testObject };
viewRoot.SetBinding(Validate.TargetProperty, new ValueBindingExpression("_root"));
viewRoot.SetBinding(RedwoodProperty.Register<Action, RedwoodView>("Test"), new CommandBindingExpression("set_StringToPass(StringToPass)"));
var path = new string[] { };
var command = "set_StringToPass(StringToPass)";
var resolver = new CommandResolver();
var context = new RedwoodRequestContext() { ViewModel = testObject };
resolver.GetFunction(viewRoot, context, path, command).GetAction()();
}
public void NamingContainers_EnsureControlHasID_GenerateUniqueID()
{
var page = new RedwoodView();
page.SetValue(Internal.UniqueIDProperty, "c0");
var head = new HtmlGenericControl("head");
head.SetValue(Internal.UniqueIDProperty, "c1");
page.Children.Add(head);
var title = new HtmlGenericControl("title");
title.SetValue(Internal.UniqueIDProperty, "c2");
head.Children.Add(title);
var body = new HtmlGenericControl("body");
body.SetValue(Internal.UniqueIDProperty, "c3");
page.Children.Add(body);
var div1 = new HtmlGenericControl("div");
div1.SetValue(Internal.UniqueIDProperty, "c4");
body.Children.Add(div1);
var div2 = new HtmlGenericControl("div");
div2.SetValue(Internal.UniqueIDProperty, "c5");
div2.SetValue(Internal.IsNamingContainerProperty, true);
body.Children.Add(div2);
var div3 = new HtmlGenericControl("div");
div3.SetValue(Internal.UniqueIDProperty, "c6");
div2.Children.Add(div3);
div3.EnsureControlHasId(true);
div1.EnsureControlHasId(true);
Assert.AreEqual("c4", div1.ID);
Assert.AreEqual("c5_c6", div3.ID);
}
/// <summary>
/// Resolves the command for the specified post data.
/// </summary>
public void ResolveCommand(RedwoodRequestContext context, RedwoodView view, string serializedPostData, out ActionInfo actionInfo)
{
// get properties
var data = JObject.Parse(serializedPostData);
var path = data["currentPath"].Values<string>().ToArray();
var command = data["command"].Value<string>();
var controlUniqueId = data["controlUniqueId"].Value<string>();
if (string.IsNullOrEmpty(command))
{
// empty command
actionInfo = null;
}
else
{
// find the command target
if (!string.IsNullOrEmpty(controlUniqueId))
{
var target = view.FindControl(controlUniqueId);
if (target == null)
{
throw new Exception(string.Format("The control with ID '{0}' was not found!", controlUniqueId));
}
actionInfo = commandResolver.GetFunction(target, view, context, path, command);
}
else
{
actionInfo = commandResolver.GetFunction(view, context, path, command);
}
}
}
/// <summary>
/// Populates the view model from the data received from the request.
/// </summary>
/// <returns></returns>
public void PopulateViewModel(RedwoodRequestContext context, RedwoodView view, string serializedPostData)
{
var viewModelConverter = new ViewModelJsonConverter();
// get properties
var data = context.ReceivedViewModelJson = JObject.Parse(serializedPostData);
var viewModelToken = (JObject)data["viewModel"];
// load CSRF token
context.CsrfToken = viewModelToken["$csrfToken"].Value<string>();
if (viewModelToken["$encryptedValues"] != null)
{
// load encrypted values
var encryptedValuesString = viewModelToken["$encryptedValues"].Value<string>();
viewModelConverter.EncryptedValues = JArray.Parse(viewModelProtector.Unprotect(encryptedValuesString, context));
}
else viewModelConverter.EncryptedValues = new JArray();
// get validation path
context.ModelState.ValidationTargetPath = data["validationTargetPath"].Value<string>();
// populate the ViewModel
var serializer = new JsonSerializer();
serializer.Converters.Add(viewModelConverter);
viewModelConverter.Populate(viewModelToken, serializer, context.ViewModel);
// load the control state
var walker = new ViewModelJTokenControlTreeWalker(viewModelToken, view);
walker.ProcessControlTree(walker.LoadControlState);
}
/// <summary>
/// Builds the view model for the client.
/// </summary>
public void BuildViewModel(RedwoodRequestContext context, RedwoodView view)
{
// serialize the ViewModel
var serializer = new JsonSerializer();
var viewModelConverter = new ViewModelJsonConverter()
{
EncryptedValues = new JArray(),
UsedSerializationMaps = new HashSet<ViewModelSerializationMap>()
};
serializer.Converters.Add(viewModelConverter);
var writer = new JTokenWriter();
serializer.Serialize(writer, context.ViewModel);
// save the control state
var walker = new ViewModelJTokenControlTreeWalker(writer.Token, view);
walker.ProcessControlTree(walker.SaveControlState);
// persist CSRF token
writer.Token["$csrfToken"] = context.CsrfToken;
// persist encrypted values
if (viewModelConverter.EncryptedValues.Count > 0)
writer.Token["$encryptedValues"] = viewModelProtector.Protect(viewModelConverter.EncryptedValues.ToString(Formatting.None), context);
// serialize validation rules
var validationRules = SerializeValidationRules(viewModelConverter);
// create result object
var result = new JObject();
result["viewModel"] = writer.Token;
result["url"] = context.OwinContext.Request.Uri.PathAndQuery;
result["virtualDirectory"] = RedwoodMiddleware.GetVirtualDirectory(context.OwinContext);
if (context.IsPostBack || context.IsSpaRequest)
{
result["action"] = "successfulCommand";
result["resources"] = BuildResourcesJson(context, _ => true);
}
else
{
result["renderedResources"] = JArray.FromObject(context.ResourceManager.RequiredResources);
}
// TODO: do not send on postbacks
if (validationRules.Count > 0) result["validationRules"] = validationRules;
context.ViewModelJson = result;
}