public void ToStringTest()
{
var text = "Hello";
Action<TextWriter> action = tw => tw.Write(text);
var helper = new HelperResult(action);
Assert.Equal(text, helper.ToString());
}
public void WriteToTest() {
var text = "Hello";
Action<TextWriter> action = tw => tw.Write(text);
var helper = new HelperResult(action);
var writer = new StringWriter();
helper.WriteTo(writer);
Assert.AreEqual(text, writer.ToString());
}
public HelperResult RenderSection(string name, IHtmlString defaultContents)
{
if (this.IsSectionDefined(name))
{
return this.RenderSection(name);
}
var result = new HelperResult((x) => x.Write(defaultContents.ToString()));
return this.RenderSection(name, (x) => result);
}
public void RenderPanel(HtmlTextWriter writer)
{
writer.AddAttribute("id", PanelId);
writer.RenderBeginTag(HtmlTextWriterTag.Div);
if (Content != null)
{
System.Web.WebPages.HelperResult res = Content(this);
writer.Write(res.ToHtmlString());
}
writer.RenderEndTag();
}
public void ToHtmlStringDoesNotEncode()
{
// Arrange
string text = "<strong>This is a test & it uses html.</strong>";
Action<TextWriter> action = writer => writer.Write(text);
HelperResult helperResult = new HelperResult(action);
// Act
string result = helperResult.ToHtmlString();
// Assert
Assert.Equal(result, text);
}
public void ToHtmlStringReturnsSameResultAsWriteTo()
{
// Arrange
string text = "<strong>This is a test & it uses html.</strong>";
Action<TextWriter> action = writer => writer.Write(text);
HelperResult helperResult = new HelperResult(action);
StringWriter stringWriter = new StringWriter();
// Act
string htmlString = helperResult.ToHtmlString();
helperResult.WriteTo(stringWriter);
// Assert
Assert.Equal(htmlString, stringWriter.ToString());
}
/// <summary>
/// Initialize system placeholders (for map path to template styles, etc.)
/// </summary>
/// <param name="tpl"></param>
/// <returns></returns>
public static string InitializeSystemPlaceholders(HelperResult body, string templateVirtualPathPattern, string template, string templateName)
{
// Replace with body
template = template.Replace(_phBody, body.ToString());
// Remove comments
template = RemoveComments(template);
// If template exists
if( !string.IsNullOrEmpty( templateName ) )
{
// Initialize template path placeholders
template = InitTemplatePathPlaceholders(templateVirtualPathPattern, template, templateName);
}
return template;
}
public abstract void Write(HelperResult result);
public override void Write(HelperResult result)
{
WriteTo(Output, result);
}
// This method is called by generated code and needs to stay in sync with the parser
public static void WriteTo(TextWriter writer, HelperResult content)
{
if (content != null)
{
content.WriteTo(writer);
}
}
public override void Write(HelperResult result)
{
WebPageExecutingBase.WriteTo(this.Output, result);
}
/// <summary>
/// 显示可访问的按钮脚本。
/// </summary>
/// <param name="html">HTML呈现助手</param>
/// <param name="button">button名称</param>
/// <param name="scriptContext">脚本回调</param>
/// <returns>经过编码的字符串</returns>
public static IHtmlString RenderButtonScript(this HtmlHelper html, string button, Func<SystemMenu, object> scriptContext)
{
var rspAccessButtons = _permissionService.GetAccessibleButtons(
WebHelper.GetLogOnUserId(),
html.ViewContext.RequestContext.HttpContext.Request.GetCurrentNavigateUrl());
if (rspAccessButtons.IsSuccess && !rspAccessButtons.Datas.IsEmpty())
{
var accessButton = rspAccessButtons.Datas.FirstOrDefault(s => s.Name == button);
if (accessButton != null)
{
var helperResult = new HelperResult(writer => writer.Write(scriptContext(accessButton)));
return html.Raw(helperResult);
}
}
return new HtmlString(string.Empty);
}
public void HelperResultConstructorNullTest() {
ExceptionAssert.ThrowsArgNull(() => { var helper = new HelperResult(null); }, "action");
}
public string ToHtmlString()
{
var items = new HelperResult(writer =>
{
// render the first/previous if needed be
if (_alwaysShowNavigation ||
(_totalPages > 1 && _currentPage != 1))
{
writer.Write(_firstLink(1));
writer.Write(_previousLink(Math.Max(1, _currentPage - 1)));
}
// build the page number looks 'around' the curent page
BuildPageRange((pageNumber) => writer.Write(_pageLink(pageNumber)));
// render the next/last if needed be
if (_alwaysShowNavigation ||
(_currentPage < _totalPages))
{
writer.Write(_nextLink(Math.Min(_currentPage + 1, _totalPages)));
writer.Write(_lastLink(_totalPages));
}
});
return _layoutTemplate(items).ToHtmlString();
}
private static void RenderSectionAsLayoutRegion(WebPageBase webPage, string partialViewHtml, string sectionName)
{
webPage.DefineSection(
sectionName,
() =>
{
Action<TextWriter> writerAction = tw => tw.Write(partialViewHtml);
var result = new HelperResult(writerAction);
webPage.Write(result);
});
}
public void ShouldRenderAs(string describe, string expected, HelperResult helperResult)
{
object actualResult = null;
Exception exception = null;
try
{
actualResult = helperResult.ToHtmlString();
}
catch (Exception ex)
{
exception = ex;
}
ShouldEqual(describe, expected, actualResult, exception);
}
/// <summary> /// Writes the specified <see cref="T:System.Web.WebPages.HelperResult"/> object as an HTML-encoded string. /// </summary> /// <param name="result">The helper result to encode and write.</param> public override void Write(HelperResult result);
private bool TryRender(string path, object model, out HelperResult result)
{
try
{
var htmlString = page.RenderPage(path, model).ToHtmlString();
result = new HelperResult((writer) =>
{
writer.Write(htmlString);
});
return true;
}
catch (HttpException ex)
{
HttpContext.Current.Trace.Warn(ex.ToString());
}
result = null;
return false;
}
/// <summary>
/// 获取当前用户在当前界面可访问的按钮。
/// </summary>
/// <param name="html">HTML呈现助手</param>
/// <param name="leftPart">附加HTML标签区域</param>
/// <returns>经过HTML编码的字符串</returns>
public static IHtmlString RenderAccessibleButtons(this HtmlHelper html, Func<IList<SystemMenu>, object> leftPart = null)
{
var tagBuilder = new TagBuilder("div");
tagBuilder.AddCssClass("toolbar panel panel-default");
var contentBuilder = new TagBuilder("div");
contentBuilder.AddCssClass("panel-heading");
var rspAccessButtons = _permissionService.GetAccessibleButtons(
WebHelper.GetLogOnUserId(),
html.ViewContext.RequestContext.HttpContext.Request.GetCurrentNavigateUrl());
var leftTag = new TagBuilder("div");
leftTag.AddCssClass("left");
if (leftPart != null)
{
var helperResult = new HelperResult(writer => writer.Write(leftPart(rspAccessButtons.Datas)));
leftTag.InnerHtml = helperResult.ToHtmlString();
}
var rightTag = new TagBuilder("div");
rightTag.AddCssClass("right btn-group");
if (rspAccessButtons.IsSuccess)
{
if (!rspAccessButtons.Datas.IsEmpty())
{
foreach (var item in rspAccessButtons.Datas)
{
rightTag.InnerHtml += $"<a href=\"#\" onclick=\"{item.NavigateUrl}()\" class=\"btn btn-default\"><i class=\"{item.Image}\"></i> {item.Title}</a>";
}
}
}
contentBuilder.InnerHtml += leftTag.ToString();
contentBuilder.InnerHtml += rightTag.ToString();
tagBuilder.InnerHtml += contentBuilder.ToString();
return new MvcHtmlString(tagBuilder.ToString());
}
public static IHtmlString RequireStyleForLayout(this HtmlHelper html, Func<object, HelperResult> style)
{
var helperResult = new HelperResult(writer => style(null).WriteTo(writer)).ToString();
var a = new AssetManager.Asset(helperResult, AssetManager.AssetType.Style);
AssetManager.GetInstance(html.ViewContext.HttpContext).Require(a, true);
return new MvcHtmlString("");
}
public override void Write(HelperResult result)
{
ChildPage.Write(result);
}
public override void Write(HelperResult result)
{
ChildPage.Write(result);
}
public HelperResult RenderSection(string name, bool required) {
EnsurePageCanBeRequestedDirectly("RenderSection");
if (PreviousSectionWriters.ContainsKey(name)) {
var result = new HelperResult(tw => {
if (_renderedSections.Contains(name)) {
throw new HttpException(String.Format(CultureInfo.InvariantCulture, WebPageResources.WebPage_SectionAleadyRendered, name));
}
var body = PreviousSectionWriters[name];
// Since the body can also call RenderSection, we need to temporarily remove
// the current sections from the stack.
var top = SectionWritersStack.Pop();
bool pushed = false;
try {
if (Output != tw) {
OutputStack.Push(tw);
pushed = true;
}
body();
}
finally {
if (pushed) {
OutputStack.Pop();
}
}
SectionWritersStack.Push(top);
_renderedSections.Add(name);
});
return result;
}
else if (required) {
// If the section is not found, and it is not optional, throw an error.
throw new HttpException(String.Format(CultureInfo.InvariantCulture, WebPageResources.WebPage_SectionNotDefined, name));
}
else {
// If the section is optional and not found, then don't do anything.
return null;
}
}
public static HelperResult RenderSection(this WebPageBase webPage, string name, HelperResult defaultContents)
{
return webPage.IsSectionDefined(name) ? webPage.RenderSection(name) : defaultContents;
}
/// <summary>
/// 表单附属标签。
/// </summary>
/// <param name="buttonPart">按钮设置区域</param>
/// <returns>表单控件</returns>
public TextBoxControl AddOn(Func<PropertyMetadata, object> buttonPart)
{
var helperResult = new HelperResult(writer => writer.Write(buttonPart(this._metadata)));
this._addOn = new TagBuilder("div");
this._addOn.AddCssClass("input-group-btn");
this._addOn.InnerHtml = helperResult.ToHtmlString();
return this;
}
/// <summary>
/// 创建表单。
/// </summary>
/// <returns>表单信息</returns>
protected override TagBuilder CreateForm()
{
var container = new TagBuilder("div");
var helperResult = new HelperResult(writer => writer.Write(this._formPartFunc(this._metadata)));
container.InnerHtml = helperResult.ToHtmlString();
return container;
}
public Tab(string id, string title, HelperResult body)
: this(id, MvcHtmlString.Create(HttpUtility.HtmlEncode(title)), body)
{
}
public static void WriteLiteralTo(TextWriter writer, HelperResult value)
{
WebPageBase.WriteLiteralTo(writer, value);
}
public Tab(string id, MvcHtmlString title, HelperResult body)
: this(id, new HelperResult(writer => writer.Write(title)), body)
{
}
public override void Write(HelperResult result) {
WriteTo(Output, result);
}
public Tab(string id, HelperResult title, MvcHtmlString body)
: this(id, title, new HelperResult(writer => writer.Write(body)))
{
}
public abstract void Write(HelperResult result);
public override void Write(HelperResult result) {
if (result != null) {
result.WriteTo(Output);
}
}
public Tab(string id, HelperResult title, HelperResult body)
{
this.Id = id;
this.Title = title;
this.Body = body;
}
public static void WriteLiteralTo(TextWriter writer, HelperResult value)
{
WebPageBase.WriteLiteralTo(writer, value);
}
