view: add functions to get/set all selections

2 files changed, 47 insertions, 5 deletions

diff --git a/view.c b/view.c
index 22607e4..206cb42 100644
--- a/view.c
+++ b/view.c
@@ -38,11 +38,6 @@ enum {
  * the necessary offset for the last character.
  */
 
-typedef struct {
-	Mark anchor;
-	Mark cursor;
-} SelectionRegion;
-
 struct Selection {
 	Mark cursor;            /* other selection endpoint where it changes */
 	Mark anchor;            /* position where the selection was created */
@@ -1247,6 +1242,40 @@ bool view_selections_restore(Selection *s) {
 	return true;
 }
 
+void view_selections_set_all(View *view, Array *arr) {
+	Selection *s;
+	Filerange *r;
+	size_t i = 0;
+	for (s = view->selections; s; s = s->next) {
+		if (!(r = array_get(arr, i++)) || !view_selections_set(s, r)) {
+			for (Selection *next; s; s = next) {
+				next = view_selections_next(s);
+				view_selections_dispose(s);
+			}
+			break;
+		}
+	}
+	while ((r = array_get(arr, i++))) {
+		s = view_selections_new_force(view, r->start);
+		if (!s || !view_selections_set(s, r))
+			break;
+	}
+	view_selections_primary_set(view->selections);
+}
+
+Array view_selections_get_all(View *view) {
+	Array arr;
+	array_init_sized(&arr, sizeof(Filerange));
+	if (!array_reserve(&arr, view_selections_count(view)))
+		return arr;
+	for (Selection *s = view->selections; s; s = s->next) {
+		Filerange r = view_selections_get(s);
+		if (text_range_valid(&r))
+			array_add(&arr, &r);
+	}
+	return arr;
+}
+
 void view_selections_normalize(View *view) {
 	Selection *prev = NULL;
 	Filerange range_prev = text_range_empty();
diff --git a/view.h b/view.h
index dd5f879..39f8ec6 100644
--- a/view.h
+++ b/view.h
@@ -9,6 +9,12 @@ typedef struct Selection Selection;
 
 #include "text.h"
 #include "ui.h"
+#include "array.h"
+
+typedef struct {
+	Mark anchor;
+	Mark cursor;
+} SelectionRegion;
 
 typedef struct {
 	char data[16];      /* utf8 encoded character displayed in this cell (might be more than
@@ -140,6 +146,13 @@ void view_selections_dispose_all(View*);
 /** Dispose all invalid and merge all overlapping selections. */
 void view_selections_normalize(View*);
 /**
+ * Replace currently active selections.
+ * @param The array of ``Filerange``s.
+ */
+void view_selections_set_all(View*, Array*);
+/** Get array containing a ``Fileranges`` for each selection. */
+Array view_selections_get_all(View*);
+/**
  * @}
  * @defgroup view_navigate
  * @{