oqtane.framework/Oqtane.Client/UI/ThemeBuilder.razor

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@namespace Oqtane.UI
@using System.Net
@inject IJSRuntime JSRuntime
@inject NavigationManager NavigationManager
@inject SiteState SiteState
@DynamicComponent
@code {
[CascadingParameter] PageState PageState { get; set; }
RenderFragment DynamicComponent { get; set; }
private string lastPagePath = "";
protected override void OnParametersSet()
{
// handle page redirection
if (!string.IsNullOrEmpty(PageState.Page.Url))
{
NavigationManager.NavigateTo(PageState.Page.Url);
return;
}
// force authenticated user to provide email address (email may be missing if using external login)
if (PageState.User != null && PageState.User.IsAuthenticated && string.IsNullOrEmpty(PageState.User.Email) && PageState.Route.PagePath != "profile")
{
NavigationManager.NavigateTo(Utilities.NavigateUrl(PageState.Alias.Path, "profile", "returnurl=" + WebUtility.UrlEncode(PageState.Route.PathAndQuery)));
return;
}
// set page title
if (!string.IsNullOrEmpty(PageState.Page.Title))
{
SiteState.Properties.PageTitle = PageState.Page.Title;
}
else
{
SiteState.Properties.PageTitle = PageState.Page.Name + " - " + PageState.Site.Name;
}
// set page head content
var headcontent = "";
// favicon
if (PageState.Site.FaviconFileId != null)
{
headcontent += $"<link id=\"app-favicon\" rel=\"icon\" href=\"{Utilities.FileUrl(PageState.Alias, PageState.Site.FaviconFileId.Value)}\" />\n";
}
else
{
headcontent += $"<link id=\"app-favicon\" rel=\"icon\" type=\"image/x-icon\" href=\"favicon.ico\" />\n";
}
// head content
if (!string.IsNullOrEmpty(PageState.Site.HeadContent))
{
headcontent = AddHeadContent(headcontent, PageState.Site.HeadContent);
}
if (!string.IsNullOrEmpty(PageState.Page.HeadContent))
{
headcontent = AddHeadContent(headcontent, PageState.Page.HeadContent);
}
SiteState.Properties.HeadContent = headcontent;
DynamicComponent = builder =>
{
builder.OpenComponent(0, Type.GetType(PageState.Page.ThemeType));
builder.CloseComponent();
};
}
private string AddHeadContent(string headcontent, string content)
{
if (!string.IsNullOrEmpty(content))
{
var elements = content.Split('<', StringSplitOptions.RemoveEmptyEntries);
foreach (var element in elements)
{
if (PageState.RenderMode == RenderModes.Static || (!element.ToLower().StartsWith("script") && !element.ToLower().StartsWith("/script")))
{
if (!headcontent.Contains("<" + element) || element.StartsWith("/"))
{
headcontent += "<" + element;
}
}
}
headcontent += "\n";
}
return headcontent;
}
protected override async Task OnAfterRenderAsync(bool firstRender)
{
if (!firstRender && PageState.Page.Path != lastPagePath)
{
if (!string.IsNullOrEmpty(PageState.Site.HeadContent) && PageState.Site.HeadContent.Contains("<script"))
{
await InjectScripts(PageState.Site.HeadContent, ResourceLocation.Head);
}
if (!string.IsNullOrEmpty(PageState.Site.BodyContent) && PageState.Site.BodyContent.Contains("<script"))
{
await InjectScripts(PageState.Site.BodyContent, ResourceLocation.Body);
}
if (!string.IsNullOrEmpty(PageState.Page.HeadContent) && PageState.Page.HeadContent.Contains("<script"))
{
await InjectScripts(PageState.Page.HeadContent, ResourceLocation.Head);
}
if (!string.IsNullOrEmpty(PageState.Page.BodyContent) && PageState.Page.BodyContent.Contains("<script"))
{
await InjectScripts(PageState.Page.BodyContent, ResourceLocation.Body);
}
lastPagePath = PageState.Page.Path;
}
// style sheets
if (PageState.Page.Resources != null && PageState.Page.Resources.Exists(item => item.ResourceType == ResourceType.Stylesheet))
{
var interop = new Interop(JSRuntime);
string batch = DateTime.UtcNow.ToString("yyyyMMddHHmmssfff");
var links = new List<object>();
foreach (Resource resource in PageState.Page.Resources.Where(item => item.ResourceType == ResourceType.Stylesheet))
{
var prefix = "app-stylesheet-" + resource.Level.ToString().ToLower();
var url = (resource.Url.Contains("://")) ? resource.Url : PageState.Alias.BaseUrl + resource.Url;
links.Add(new { id = prefix + "-" + batch + "-" + (links.Count + 1).ToString("00"), rel = "stylesheet", href = url, type = "text/css", integrity = resource.Integrity ?? "", crossorigin = resource.CrossOrigin ?? "", insertbefore = prefix });
}
if (links.Any())
{
await interop.IncludeLinks(links.ToArray());
}
await interop.RemoveElementsById("app-stylesheet-page-", "", "app-stylesheet-page-" + batch + "-00");
await interop.RemoveElementsById("app-stylesheet-module-", "", "app-stylesheet-module-" + batch + "-00");
}
}
private async Task InjectScripts(string content, ResourceLocation location)
{
// inject scripts into page dynamically
var interop = new Interop(JSRuntime);
var scripts = new List<object>();
var count = 0;
var index = content.IndexOf("<script");
while (index >= 0)
{
var script = content.Substring(index, content.IndexOf("</script>", index) + 9 - index);
// get script attributes
var attributes = script.Substring(0, script.IndexOf(">")).Replace("\"", "").Split(" ");
string id = "";
string src = "";
string integrity = "";
string crossorigin = "";
string type = "";
var dataAttributes = new Dictionary<string, string>();
foreach (var attribute in attributes)
{
if (attribute.Contains("="))
{
var value = attribute.Split("=");
switch (value[0])
{
case "id":
id = value[1];
break;
case "src":
src = value[1];
break;
case "integrity":
integrity = value[1];
break;
case "crossorigin":
crossorigin = value[1];
break;
case "type":
type = value[1];
break;
default:
if(!string.IsNullOrWhiteSpace(value[0]) && value[0].StartsWith("data-"))
{
dataAttributes.Add(value[0], value[1]);
}
break;
}
}
}
// inject script
if (!string.IsNullOrEmpty(src))
{
src = (src.Contains("://")) ? src : PageState.Alias.BaseUrl + src;
scripts.Add(new { href = src, type = type, bundle = "", integrity = integrity, crossorigin = crossorigin, location = location.ToString().ToLower(), dataAttributes = dataAttributes });
}
else
{
if (dataAttributes == null || !dataAttributes.ContainsKey("data-reload") || dataAttributes["data-reload"] != "false")
{
if (id == "")
{
count += 1;
id = $"page{PageState.Page.PageId}-script{count}";
}
var pos = script.IndexOf(">") + 1;
await interop.IncludeScript(id, "", "", "", type, script.Substring(pos, script.IndexOf("</script>") - pos), location.ToString().ToLower(), dataAttributes);
}
}
index = content.IndexOf("<script", index + 1);
}
if (scripts.Any())
{
await interop.IncludeScripts(scripts.ToArray());
}
}
private string ManageStyleSheets(List<Resource> resources, Alias alias)
{
var stylesheets = "";
if (resources != null)
{
string batch = DateTime.UtcNow.ToString("yyyyMMddHHmmssfff");
int count = 0;
foreach (var resource in resources.Where(item => item.ResourceType == ResourceType.Stylesheet))
{
if (resource.Url.StartsWith("~"))
{
resource.Url = resource.Url.Replace("~", "/Themes/" + Utilities.GetTypeName(resource.Namespace) + "/").Replace("//", "/");
}
if (!resource.Url.Contains("://") && alias.BaseUrl != "" && !resource.Url.StartsWith(alias.BaseUrl))
{
resource.Url = alias.BaseUrl + resource.Url;
}
if (!stylesheets.Contains(resource.Url, StringComparison.OrdinalIgnoreCase))
{
count++;
string id = "id=\"app-stylesheet-" + ResourceLevel.Page.ToString().ToLower() + "-" + batch + "-" + count.ToString("00") + "\" ";
stylesheets += "<link " + id + "rel=\"stylesheet\" href=\"" + resource.Url + "\"" + (!string.IsNullOrEmpty(resource.Integrity) ? " integrity=\"" + resource.Integrity + "\"" : "") + (!string.IsNullOrEmpty(resource.CrossOrigin) ? " crossorigin=\"" + resource.CrossOrigin + "\"" : "") + " type=\"text/css\"/>" + Environment.NewLine;
}
}
}
return stylesheets;
}
private string ManageScripts(List<Resource> resources, Alias alias)
{
var scripts = "";
if (resources != null)
{
foreach (var resource in resources.Where(item => item.ResourceType == ResourceType.Script && item.Location == ResourceLocation.Head))
{
var script = CreateScript(resource, alias);
if (!scripts.Contains(script, StringComparison.OrdinalIgnoreCase))
{
scripts += script + Environment.NewLine;
}
}
}
return scripts;
}
private string CreateScript(Resource resource, Alias alias)
{
if (!string.IsNullOrEmpty(resource.Url))
{
var url = (resource.Url.Contains("://")) ? resource.Url : alias.BaseUrl + resource.Url;
return "<script src=\"" + url + "\"" +
((!string.IsNullOrEmpty(resource.Integrity)) ? " integrity=\"" + resource.Integrity + "\"" : "") +
((!string.IsNullOrEmpty(resource.CrossOrigin)) ? " crossorigin=\"" + resource.CrossOrigin + "\"" : "") +
"></script>";
}
else
{
// inline script
return "<script>" + resource.Content + "</script>";
}
}
}