public void Navigate_ContentListField_Null()
{
var content = new TestPageContent();
var explorer = ContentExplorer.Create(metadataManager, content, "Headers[0]");
Assert.Null(explorer);
}
public void Navigate_ContentField()
{
var content = new TestPageContent
{
Header = new PageHeaderContent()
};
var explorer = ContentExplorer.Create(metadataManager, content, "Header");
Assert.NotNull(explorer);
}
private ContentExplorer(object model, ContentMetadataProvider contentMetadata)
{
Field = null;
Model = model;
Metadata = contentMetadata;
ModelPath = string.Empty;
Parent = null;
rootExplorer = null;
name = contentMetadata.Name;
}
private ContentProvider(TEntry page, object model, IServiceProvider services)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
Entry = page ?? throw new ArgumentNullException(nameof(page));
Services = services ?? throw new ArgumentNullException(nameof(services));
var contentMetadataManager = services.GetRequiredService <IContentMetadataManager>();
Explorer = ContentExplorer.Create(contentMetadataManager, model);
}
public void Create_Root()
{
var content = new TestPageContent();
var explorer = ContentExplorer.Create(metadataManager, content);
Assert.NotNull(explorer);
Assert.NotNull(explorer.Metadata);
Assert.Null(explorer.Field);
Assert.Equal(content, explorer.Model);
Assert.Equal(string.Empty, explorer.ModelPath);
Assert.Equal(content.Title, explorer.Title);
Assert.Null(explorer.Root);
Assert.Null(explorer.Parent);
Assert.Equal(-1, explorer.Index);
Assert.True(explorer.IsRoot);
}
public void Create_SpecifyPath()
{
var content = new TestPageContent {
Header = new PageHeaderContent()
};
var explorer = ContentExplorer.Create(metadataManager, content, "Header");
Assert.NotNull(explorer);
Assert.NotNull(explorer.Metadata);
Assert.NotNull(explorer.Field);
Assert.Equal(explorer.Model, content.Header);
Assert.Equal("Header", explorer.ModelPath);
Assert.NotEqual(explorer.Root, explorer);
Assert.NotNull(explorer.Parent);
Assert.Equal(explorer.Index, -1);
Assert.False(explorer.IsRoot);
}
private ContentExplorer(ContentExplorer parent, IModelField field, int index, object model, ContentMetadataProvider contentMetadata)
{
Field = field;
Model = model;
Metadata = contentMetadata;
Parent = parent ?? throw new ArgumentNullException(nameof(parent));
FieldPath = field.Name;
if (index >= 0)
{
FieldPath += "[" + index + "]";
}
ModelPath = !parent.IsRoot ? string.Concat(parent.ModelPath, Delimiter, FieldPath) : FieldPath;
Index = index;
rootExplorer = parent.rootExplorer ?? parent;
name = rootExplorer.name + ":" + ModelPath;
}
public ContentExplorer Navigate(string modelPath)
{
if (modelPath == null)
{
throw new ArgumentNullException(nameof(modelPath));
}
ContentExplorer navExplorer = this;
while (modelPath != string.Empty)
{
var fieldName = ExtractFirstFieldName(ref modelPath);
if (!VisitField(ref navExplorer, fieldName))
{
return(null);
}
}
return(navExplorer);
}
private static bool VisitField(ref ContentExplorer parentExplorer, string fieldName)
{
var charIndex = fieldName.IndexOf(IndexStart);
var itemIndex = -1;
if (charIndex > 0)
{
itemIndex = int.Parse(fieldName.Substring(charIndex).Trim(IndexTrimChars));
fieldName = fieldName.Substring(0, charIndex);
}
var parentModel = parentExplorer.Model;
if (!parentExplorer.Metadata.TryGetField(fieldName, out FieldProviderAttribute field))
{
throw new InvalidOperationException(string.Format("Не найдено поле {0}.", fieldName));
}
if (!(field is IModelField modelField))
{
throw new InvalidOperationException($"Поле {fieldName} не является полем модели.");
}
var fieldValue = field.GetModelValue(parentModel);
var contentModel = modelField.Navigate(fieldValue, itemIndex);
if (contentModel == null)
{
parentExplorer = null;
return(false);
}
var contentMetadata = parentExplorer.Metadata.Manager.GetMetadata(contentModel.GetType());
parentExplorer = new ContentExplorer(parentExplorer, modelField, itemIndex, contentModel, contentMetadata);
return(true);
}
private ContentProvider(ContentProvider <TEntry> parent, ContentExplorer contentExplorer)
{
Entry = parent.Entry;
Services = parent.Services;
Explorer = contentExplorer;
}
