Feature [feature-requests:1344]. Add methods for iterating through the marker

handles and marker numbers on a line.

5 files changed, 44 insertions, 0 deletions

diff --git a/src/Document.cxx b/src/Document.cxx
index 6b93a30af..263e83d7a 100644
--- a/src/Document.cxx
+++ b/src/Document.cxx
@@ -369,6 +369,14 @@ Sci::Line Document::LineFromHandle(int markerHandle) const {
 	return Markers()->LineFromHandle(markerHandle);
 }
 
+int Document::MarkerNumberFromLine(Sci::Line line, int which) const {
+	return Markers()->NumberFromLine(line, which);
+}
+
+int Document::MarkerHandleFromLine(Sci::Line line, int which) const {
+	return Markers()->HandleFromLine(line, which);
+}
+
 Sci_Position SCI_METHOD Document::LineStart(Sci_Position line) const {
 	return cb.LineStart(line);
 }
diff --git a/src/Document.h b/src/Document.h
index c96fe9ee7..1f03dda1d 100644
--- a/src/Document.h
+++ b/src/Document.h
@@ -403,6 +403,8 @@ public:
 	void DeleteMarkFromHandle(int markerHandle);
 	void DeleteAllMarks(int markerNum);
 	Sci::Line LineFromHandle(int markerHandle) const;
+	int MarkerNumberFromLine(Sci::Line line, int which) const;
+	int MarkerHandleFromLine(Sci::Line line, int which) const;
 	Sci_Position SCI_METHOD LineStart(Sci_Position line) const override;
 	bool IsLineStartPosition(Sci::Position position) const;
 	Sci_Position SCI_METHOD LineEnd(Sci_Position line) const override;
diff --git a/src/Editor.cxx b/src/Editor.cxx
index efb360331..b7636adb2 100644
--- a/src/Editor.cxx
+++ b/src/Editor.cxx
@@ -6412,6 +6412,12 @@ sptr_t Editor::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
 		pdoc->DeleteMarkFromHandle(static_cast<int>(wParam));
 		break;
 
+	case SCI_MARKERHANDLEFROMLINE:
+		return pdoc->MarkerHandleFromLine(static_cast<Sci::Line>(wParam), static_cast<int>(lParam));
+
+	case SCI_MARKERNUMBERFROMLINE:
+		return pdoc->MarkerNumberFromLine(static_cast<Sci::Line>(wParam), static_cast<int>(lParam));
+
 	case SCI_GETVIEWWS:
 		return vs.viewWhitespace;
 
diff --git a/src/PerLine.cxx b/src/PerLine.cxx
index 017eb77b8..31da695ad 100644
--- a/src/PerLine.cxx
+++ b/src/PerLine.cxx
@@ -55,6 +55,15 @@ bool MarkerHandleSet::Contains(int handle) const noexcept {
 	return false;
 }
 
+MarkerHandleNumber const *MarkerHandleSet::GetMarkerHandleNumber(int which) const noexcept {
+	for (const MarkerHandleNumber &mhn : mhList) {
+		if (which == 0)
+			return &mhn;
+		which--;
+	}
+	return nullptr;
+}
+
 bool MarkerHandleSet::InsertHandle(int handle, int markerNum) {
 	mhList.push_front(MarkerHandleNumber(handle, markerNum));
 	return true;
@@ -116,6 +125,22 @@ Sci::Line LineMarkers::LineFromHandle(int markerHandle) {
 	return -1;
 }
 
+int LineMarkers::HandleFromLine(Sci::Line line, int which) const {
+	if (markers.Length() && (line >= 0) && (line < markers.Length()) && markers[line]) {
+		MarkerHandleNumber const *pnmh = markers[line]->GetMarkerHandleNumber(which);
+		return pnmh ? pnmh->handle : -1;
+	}
+	return -1;
+}
+
+int LineMarkers::NumberFromLine(Sci::Line line, int which) const {
+	if (markers.Length() && (line >= 0) && (line < markers.Length()) && markers[line]) {
+		MarkerHandleNumber const *pnmh = markers[line]->GetMarkerHandleNumber(which);
+		return pnmh ? pnmh->number : -1;
+	}
+	return -1;
+}
+
 void LineMarkers::MergeMarkers(Sci::Line line) {
 	if (markers[line + 1]) {
 		if (!markers[line])
diff --git a/src/PerLine.h b/src/PerLine.h
index 94dc17a20..3da02b5e5 100644
--- a/src/PerLine.h
+++ b/src/PerLine.h
@@ -41,6 +41,7 @@ public:
 	void RemoveHandle(int handle);
 	bool RemoveNumber(int markerNum, bool all);
 	void CombineWith(MarkerHandleSet *other);
+	MarkerHandleNumber const *GetMarkerHandleNumber(int which) const noexcept;
 };
 
 class LineMarkers : public PerLine {
@@ -67,6 +68,8 @@ public:
 	bool DeleteMark(Sci::Line line, int markerNum, bool all);
 	void DeleteMarkFromHandle(int markerHandle);
 	Sci::Line LineFromHandle(int markerHandle);
+	int HandleFromLine(Sci::Line line, int which) const;
+	int NumberFromLine(Sci::Line line, int which) const;
 };
 
 class LineLevels : public PerLine {