public Fooder Get(PackageRelationship relationship, FooderType fooderType, FooderDesignation fooderDesignation)
{
var packagePartUri = PackagePartHelper.EnsureCorrectUri(relationship.TargetUri);
if (fooders.ContainsKey(packagePartUri))
{
var cachedFooder = fooders[packagePartUri];
return(cachedFooder.FooderType == fooderType
? cachedFooder
: throw new Exception($"Requested fooder is not of type {fooderType}"));
}
var packagePart = package.GetPart(relationship);
var document = PackagePartHelper.ReadPackagePart(packagePart);
var fooder = fooderType switch
{
FooderType.Header => (Fooder) new Header(packagePart, document, relationship, fooderDesignation, wordDocument),
FooderType.Footer => new Footer(packagePart, document, relationship, fooderDesignation, wordDocument),
_ => throw new ArgumentOutOfRangeException(nameof(fooderType))
};
fooders[packagePartUri] = fooder;
return(fooder);
}
public Fooder Create(FooderType fooderType, FooderDesignation fooderDesignation)
{
var(part, relationship) = fooderType switch
{
FooderType.Header => package.AddHeaderPart(),
FooderType.Footer => package.AddFooterPart(),
_ => throw new ArgumentOutOfRangeException(nameof(fooderType))
};
var document = PackagePartHelper.ReadPackagePart(part);
Fooder fooder = fooderType switch
{
FooderType.Header => new Header(part, document, relationship, fooderDesignation, wordDocument),
FooderType.Footer => new Footer(part, document, relationship, fooderDesignation, wordDocument),
_ => throw new ArgumentOutOfRangeException(nameof(fooderType))
};
var packagePartUri = PackagePartHelper.EnsureCorrectUri(relationship.TargetUri);
fooders[packagePartUri] = fooder;
EnsureDefaultStyles(fooderType);
return(fooder);
}
protected Fooder(FooderType fooderType, PackagePart packagePart, XDocument xDocument, PackageRelationship relationship, FooderDesignation designation,
WordDocument document)
: base(xDocument.Root ?? throw new Exception("Header or footer root must not be null"), packagePart, document)
{
this.xDocument = xDocument;
FooderType = fooderType;
Relationship = relationship;
Designation = designation;
}
private PackageRelationship GetFooderRelationship(FooderType fooderType, string relationshipId)
{
var relationshipType = fooderType == FooderType.Header ? RelationshipTypes.Header : RelationshipTypes.Footer;
var relationship = PackagePart.GetRelationship(relationshipId);
if (relationship.RelationshipType != relationshipType)
{
throw new Exception($"Relationship {relationshipId} type does not match {fooderType}");
}
return(relationship);
}
private T?FindFooderOfType <T>(FooderType fooderType, FooderDesignation fooderDesignation) where T : Fooder
{
var keyword = fooderType == FooderType.Header ? "header" : "footer";
var referenceElement = FindFooderReferenceElement(keyword, fooderDesignation);
if (referenceElement == null)
{
return(null);
}
var relationshipId = GetRelationshipId(keyword, fooderDesignation, referenceElement);
var relationship = GetFooderRelationship(fooderType, relationshipId);
var fooder = document.FooderCollection.Get(relationship, fooderType, fooderDesignation);
return(fooder as T);
}
private void EnsureDefaultStyles(FooderType fooderType)
{
switch (fooderType)
{
case FooderType.Header:
wordDocument.Styles.EnsureStyle("Header", StyleType.Paragraph);
wordDocument.Styles.EnsureStyle("HeaderChar", StyleType.Character);
break;
case FooderType.Footer:
wordDocument.Styles.EnsureStyle("Footer", StyleType.Paragraph);
wordDocument.Styles.EnsureStyle("FooterChar", StyleType.Character);
break;
default:
throw new ArgumentOutOfRangeException(nameof(fooderType));
}
}
private T CreateFooder <T>(FooderType fooderType, FooderDesignation fooderDesignation) where T : Fooder
{
var referenceElementName = fooderType == FooderType.Header ? "headerReference" : "footerReference";
var typeAttributeValue = fooderDesignation switch
{
FooderDesignation.Default => "default",
FooderDesignation.First => "first",
FooderDesignation.Even => "even",
_ => throw new ArgumentOutOfRangeException(nameof(fooderDesignation), $"Unsupported header or footer type {fooderDesignation}")
};
var fooder = document.FooderCollection.Create(fooderType, fooderDesignation);
var relationshipId = fooder.Relationship.Id;
Xml.Add(new XElement(Namespaces.w + referenceElementName, new XAttribute(Namespaces.w + "type", typeAttributeValue),
new XAttribute(Namespaces.r + "id", relationshipId)));
return((T)fooder);
}