C# Gtk.GetIterAtLine方法代码示例

		public void Undo (Gtk.TextBuffer buffer)
		{
			Gtk.TextIter iter = buffer.GetIterAtOffset (offset);
			iter.ForwardLine ();
			iter = buffer.GetIterAtLine (iter.Line);

			((NoteBuffer) buffer).RemoveBullet (ref iter);

			iter.ForwardToLineEnd ();

			buffer.MoveMark (buffer.InsertMark, iter);
			buffer.MoveMark (buffer.SelectionBound, iter);
		}

//.........这里部分代码省略.........
				while (continue_stack.Count > 0 &&
				                ((depth_tag == null && iter.StartsLine ()) || iter.LineOffset == 1))
				{
					Gtk.TextTag continue_tag = continue_stack.Pop();

					if (!TagEndsHere (continue_tag, iter, next_iter)
					                && iter.HasTag (continue_tag))
					{
						WriteTag (continue_tag, xml, true);
						tag_stack.Push (continue_tag);
					}
				}

				// Hidden character representing an anchor
				if (iter.Char[0] == (char) 0xFFFC) {
					Logger.Info ("Got child anchor!");
					if (iter.ChildAnchor != null) {
						string serialize =
						        (string) iter.ChildAnchor.Data ["serialize"];
						if (serialize != null)
							xml.WriteRaw (serialize);
					}
				// Line Separator character
				} else if (iter.Char == "\u2028") {
					xml.WriteCharEntity ('\u2028');
				} else if (depth_tag == null) {
					xml.WriteString (iter.Char);
				}

				bool end_of_depth_line = line_has_depth && next_iter.EndsLine ();

				bool next_line_has_depth = false;
				if (iter.Line < buffer.LineCount - 1) {
					Gtk.TextIter next_line = buffer.GetIterAtLine(iter.Line+1);
					next_line_has_depth =
					        ((NoteBuffer)buffer).FindDepthTag (next_line) != null;
				}

				bool at_empty_line = iter.EndsLine () && iter.StartsLine ();

				if (end_of_depth_line ||
				                (next_line_has_depth && (next_iter.EndsLine () || at_empty_line)))
				{
					// Close all tags in the tag_stack
					while (tag_stack.Count > 0) {
						Gtk.TextTag existing_tag = tag_stack.Pop ();

						// Any tags which continue across the indented
						// line are added to the continue_stack to be
						// reopened at the start of the next <list-item>
						if (!TagEndsHere (existing_tag, iter, next_iter)) {
							continue_stack.Push (existing_tag);
						}

						WriteTag (existing_tag, xml, false);
					}
				} else {
					foreach (Gtk.TextTag tag in iter.Tags) {
						if (TagEndsHere (tag, iter, next_iter) &&
						                NoteTagTable.TagIsSerializable(tag) && !(tag is DepthNoteTag))
						{
							while (tag_stack.Count > 0) {
								Gtk.TextTag existing_tag = tag_stack.Pop ();

								if (!TagEndsHere (existing_tag, iter, next_iter)) {
									replay_stack.Push (existing_tag);

		public void Redo (Gtk.TextBuffer buffer)
		{
			Gtk.TextIter iter = buffer.GetIterAtLine (line);

			if (direction) {
				((NoteBuffer) buffer).IncreaseDepth (ref iter);
			} else {
				((NoteBuffer) buffer).DecreaseDepth (ref iter);
			}

			buffer.MoveMark (buffer.InsertMark, iter);
			buffer.MoveMark (buffer.SelectionBound, iter);
		}