public virtual void MergeFormChanges(CodeCompileUnit unit)
{
Reparse();
// find InitializeComponent method and the class it is declared in
CodeTypeDeclaration formClass = null;
CodeMemberMethod initializeComponent = null;
foreach (CodeNamespace n in unit.Namespaces)
{
foreach (CodeTypeDeclaration typeDecl in n.Types)
{
foreach (CodeTypeMember m in typeDecl.Members)
{
if (m is CodeMemberMethod && m.Name == "InitializeComponent")
{
formClass = typeDecl;
initializeComponent = (CodeMemberMethod)m;
break;
}
}
}
}
if (formClass == null || initializeComponent == null)
{
throw new InvalidOperationException("InitializeComponent method not found in framework-generated CodeDom.");
}
if (this.formClass == null)
{
MessageService.ShowMessage("Cannot save form: InitializeComponent method does not exist anymore. You should not modify the Designer.cs file while editing a form.");
return;
}
FixGeneratedCode(this.formClass, initializeComponent);
// generate file and get initialize components string
StringWriter writer = new StringWriter();
CodeDOMGenerator domGenerator = new CodeDOMGenerator(this.CodeDomProvider, tabs + '\t');
domGenerator.ConvertContentDefinition(initializeComponent, writer);
string statements = writer.ToString();
// initializeComponents.BodyRegion.BeginLine + 1
DomRegion bodyRegion = GetReplaceRegion(this.ViewContent.DesignerCodeFileDocument, initializeComponents);
if (bodyRegion.BeginColumn <= 0 || bodyRegion.EndColumn <= 0)
{
throw new InvalidOperationException("Column must be > 0");
}
int startOffset = this.ViewContent.DesignerCodeFileDocument.PositionToOffset(new TextLocation(bodyRegion.BeginColumn - 1, bodyRegion.BeginLine - 1));
int endOffset = this.ViewContent.DesignerCodeFileDocument.PositionToOffset(new TextLocation(bodyRegion.EndColumn - 1, bodyRegion.EndLine - 1));
this.ViewContent.DesignerCodeFileDocument.Replace(startOffset, endOffset - startOffset, statements);
// apply changes the designer made to field declarations
// first loop looks for added and changed fields
foreach (CodeTypeMember m in formClass.Members)
{
if (m is CodeMemberField)
{
CodeMemberField newField = (CodeMemberField)m;
IField oldField = GetField(completeClass, newField.Name);
if (oldField == null || FieldChanged(oldField, newField))
{
AddOrReplaceField(domGenerator, newField);
}
}
}
// second loop looks for removed fields
List <string> removedFields = new List <string>();
foreach (IField field in completeClass.Fields)
{
bool found = false;
foreach (CodeTypeMember m in formClass.Members)
{
if (m is CodeMemberField && m.Name == field.Name)
{
found = true;
break;
}
}
if (!found)
{
removedFields.Add(field.Name);
}
}
// removing fields is done in two steps because
// we must not modify the c.Fields collection while it is enumerated
removedFields.ForEach(RemoveField);
ParserService.EnqueueForParsing(this.ViewContent.DesignerCodeFile.FileName, this.ViewContent.DesignerCodeFileDocument.TextContent);
}