/// <summary>
/// Registers javascript reference.
/// </summary>
/// <param name="scriptPath">The path to the javascript file.</param>
/// <param name="throwException">OPTIONAL: Indicates whether to throw an exception if the javascript is already registered. By default the value is set to <value>false</value>.</param>
/// <returns>MvcHtmlString</returns>
public static MvcHtmlString Script(this HtmlHelper helper, string scriptPath, bool throwException = false)
{
var attributes = new KeyValuePair<string, string>[2];
attributes[0] = new KeyValuePair<string, string>("src", scriptPath);
attributes[1] = new KeyValuePair<string, string>("type", "text/javascript");
var register = new ResourceRegister("JsRegister", helper.ViewContext.HttpContext);
return ResourceHelper.RegisterResource(register, scriptPath, throwException, tagName: "script", attribbutes: attributes);
}
public void RegisterResource_NewResource_ResourceIsRegistered()
{
// Arrange
string registerName = "TestRegister";
HttpContextBase context = this.CreateHttpContext();
var register = new ResourceRegister(registerName, context);
string fakeResourceKey = "test-resource";
Assert.IsTrue(register.GetInlineResources().Count(i => i == fakeResourceKey) == 0);
// Act
register.Register(fakeResourceKey);
// Assert
Assert.IsTrue(register.GetInlineResources().Count(i => i == fakeResourceKey) == 1);
}
public void RegisterResource_AlreadyRegisteredResource_ExceptionIsThrown()
{
// Arrange
string registerName = "TestRegister";
HttpContextBase context = this.CreateHttpContext();
var register = new ResourceRegister(registerName, context);
string fakeResourceKey = "test-resource";
register.Register(fakeResourceKey);
Assert.IsTrue(register.GetInlineResources().Count(i => i == fakeResourceKey) == 1);
// Act
register.Register(fakeResourceKey, throwException: true);
// Assert
Assert.IsTrue(register.GetInlineResources().Count(i => i == fakeResourceKey) == 1);
}
public void TryRegisterResource_AlreadyRegisteredResource_ResourceIsNotRegisteredTwice()
{
// Arrange
string registerName = "TestRegister";
HttpContextBase context = this.CreateHttpContext();
var register = new ResourceRegister(registerName, context);
string fakeResourceKey = "test-resource";
register.Register(fakeResourceKey);
Assert.IsTrue(register.GetInlineResources().Count(i => i == fakeResourceKey) == 1);
// Act
bool result = register.Register(fakeResourceKey);
// Assert
Assert.IsFalse(result);
Assert.IsTrue(register.GetInlineResources().Count(i => i == fakeResourceKey) == 1);
}
/// <summary>
/// Registers resource reference.
/// </summary>
private static MvcHtmlString RegisterResource(ResourceRegister register, string resourceKey, bool throwException, string tagName, KeyValuePair<string, string>[] attribbutes)
{
string output;
MvcHtmlString result;
if (throwException)
{
register.RegisterResource(resourceKey);
output = ResourceHelper.GenerateTag(tagName, attribbutes);
result = new MvcHtmlString(output);
}
else if (register.TryRegisterResource(resourceKey))
{
output = ResourceHelper.GenerateTag(tagName, attribbutes);
result = new MvcHtmlString(output);
}
else
{
result = MvcHtmlString.Empty;
}
return result;
}
/// <summary>
/// Registers the resource.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="scriptKey">The script key.</param>
/// <param name="scriptPath">The script path.</param>
/// <param name="throwException">if set to <c>true</c> throws exception.</param>
/// <returns></returns>
private static MvcHtmlString RegisterResource(HttpContextBase context, string scriptKey, string scriptPath, bool throwException)
{
var attributes = new KeyValuePair<string, string>[2];
attributes[0] = new KeyValuePair<string, string>("src", scriptPath);
attributes[1] = new KeyValuePair<string, string>("type", "text/javascript");
var register = new ResourceRegister(ResourceHelper.JsRegisterName, context);
return ResourceHelper.RegisterResource(register, scriptKey, throwException, tagName: "script", attribbutes: attributes);
}
private static MvcHtmlString RegisterResource(HttpContextBase httpContext, string resourcePath, ResourceType resourceType, string sectionName, bool throwException)
{
throwException = throwException && httpContext.CurrentHandler != null;
var registerName = string.Empty;
if (resourceType == ResourceType.Js)
registerName = ResourceHelper.JsRegisterName;
else if (resourceType == ResourceType.Css)
registerName = ResourceHelper.CssRegisterName;
var register = new ResourceRegister(registerName, httpContext);
MvcHtmlString result = MvcHtmlString.Empty;
// No section name renders the script inline if it hasn't been rendered
if (string.IsNullOrEmpty(sectionName) || !SectionRenderer.IsAvailable(httpContext.Handler.GetPageHandler(), sectionName))
{
if (!register.IsRegistered(resourcePath, sectionName: null))
{
result = MvcHtmlString.Create(ResourceHelper.BuildSingleResourceMarkup(resourcePath, resourceType));
}
}
// Register the resource even if it had to be rendered inline (avoid repetitions).
register.Register(resourcePath, sectionName, throwException);
return result;
}
private static string BuildHtmlResourcesMarkup(ResourceRegister resourceRegister, string sectionName, ResourceType resourceType)
{
StringBuilder output = new StringBuilder();
foreach (var resource in resourceRegister.GetResourcesForSection(sectionName))
{
if (!resourceRegister.IsRendered(resource))
{
output.Append(ResourceHelper.BuildSingleResourceMarkup(resource, resourceType));
resourceRegister.MarkAsRendered(resource);
}
}
return output.ToString();
}
/// <summary>
/// Renders all stylesheets.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="sectionName">The section name.</param>
/// <returns></returns>
internal static string RenderAllStylesheets(HttpContextBase context, string sectionName)
{
var stylesheetRegister = new ResourceRegister(ResourceHelper.CssRegisterName, context);
var stylesheetMarkup = ResourceHelper.BuildHtmlResourcesMarkup(stylesheetRegister, sectionName, ResourceType.Css);
return stylesheetMarkup;
}
/// <summary>
/// Renders all scripts.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="sectionName">The section name.</param>
/// <returns></returns>
internal static string RenderAllScripts(HttpContextBase context, string sectionName)
{
var scriptRegister = new ResourceRegister(ResourceHelper.JsRegisterName, context);
var scriptMarkup = ResourceHelper.BuildHtmlResourcesMarkup(scriptRegister, sectionName, ResourceType.Js);
return scriptMarkup;
}
public void TryRegisterResource_NewResource_ResourceIsRegistered()
{
// Arrange
string registerName = "TestRegister";
HttpContextBase context = this.CreateHttpContext();
var register = new ResourceRegister(registerName, context);
string fakeResourceKey = "test-resource";
Assert.IsTrue(register.Container.Count(i => i == fakeResourceKey) == 0);
// Act
bool result = register.TryRegisterResource(fakeResourceKey);
// Assert
Assert.IsTrue(result);
Assert.IsTrue(register.Container.Count(i => i == fakeResourceKey) == 1);
}
