Allow subclasses to modify loaded/saved text

Hypothetically, a subclass of SourceEditorView might want to store metadata
in a hidden header area of the file. Overriding ProcessLoadText gives the
subclass an opportunity to extract said metadata, and ensure that the text
loaded into the Document excludes it.

Similarly, ProcessSaveText would allow this subclass to inject updated
metadata into the file text just before the write occurs.

1 files changed, 12 insertions, 1 deletions

diff --git a/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SourceEditorView.cs b/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SourceEditorView.cs
index d301d929f5..3990a458e3 100644
--- a/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SourceEditorView.cs
+++ b/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SourceEditorView.cs
@@ -614,6 +614,11 @@ namespace MonoDevelop.SourceEditor
 				messageBubbleCache = null;
 			}
 		}
+
+		protected virtual string ProcessSaveText (string text)
+		{
+			return text;
+		}
 		
 		public override void Save (string fileName)
 		{
@@ -694,7 +699,7 @@ namespace MonoDevelop.SourceEditor
 				try {
 					var writeEncoding = encoding;
 					var writeBom = hadBom;
-					var writeText = Document.Text;
+					var writeText = ProcessSaveText (Document.Text);
 					if (writeEncoding == null) {
 						if (this.encoding != null) {
 							writeEncoding = this.encoding;
@@ -821,6 +826,11 @@ namespace MonoDevelop.SourceEditor
 			Load (fileName, loadEncoding);
 		}
 
+		protected virtual string ProcessLoadText (string text)
+		{
+			return text;
+		}
+
 		public void Load (string fileName, Encoding loadEncoding, bool reload = false)
 		{
 			// Handle the "reload" case.
@@ -848,6 +858,7 @@ namespace MonoDevelop.SourceEditor
 					encoding = loadEncoding;
 					text = TextFileUtility.ReadAllText (fileName, loadEncoding, out hadBom);
 				}
+				text = ProcessLoadText (text);
 				if (reload) {
 					Document.Replace (0, Document.TextLength, text);
 					Document.DiffTracker.Reset ();