Initial community commit

Src/Wasabi/api/wnd/wndclass/SelItemList.cpp

@@ -0,0 +1,72 @@
+#include <precomp.h>
+#include "SelItemList.h"
+#include "listwnd.h"
+
+#define SELITEMEXPAND 2040
+
+SelItemList::SelItemList(ListWnd *parent) :
+listwnd(parent), list(SELITEMEXPAND), num_selected(0) { }
+
+void SelItemList::setSelected(int pos, int selected, int cb)
+{
+	int s = list.getSize();
+	if (pos >= s)
+	{
+		if (!selected)
+		{
+			// turning off something that's out of range is a no-brainer
+			return ;
+		}
+		s = ((s / SELITEMEXPAND) + 1) * SELITEMEXPAND;
+		list.setSize(s);
+	}
+
+	char *l = list.getMemory();
+	if (selected)
+	{
+		// quick and dirty way to prevent more than one item from
+		// ever being selected?
+		if (listwnd->getPreventMultipleSelection())
+		{
+			listwnd->deselectAll(cb);
+		}
+		if (!isSelected(pos))
+		{
+			l[pos] = 1;
+			num_selected++;
+			if (cb) listwnd->itemSelection(pos, TRUE);
+			listwnd->invalidateItem(pos);
+		}
+	}
+	else
+	{
+		if (isSelected(pos))
+		{
+			l[pos] = 0;
+			num_selected--;
+			if (cb) listwnd->itemSelection(pos, FALSE);
+			listwnd->invalidateItem(pos);
+		}
+	}
+}
+int SelItemList::isSelected(int pos)
+{
+	if (pos >= list.getSize()) return 0;
+	return list.getMemory()[pos];
+}
+int SelItemList::getNumSelected() { return num_selected; }
+
+void SelItemList::deleteByPos(int pos)
+{
+	ASSERT(pos >= 0);
+	int s = list.getSize();
+	if (pos >= s) return ;
+	num_selected -= isSelected(pos);
+	char *m = list.getMemory() + pos;
+	MEMCPY(m, m + 1, s - (pos + 1));
+}
+void SelItemList::deselectAll()
+{	// for internal use, doesn't send callbacks
+	list.zeroMemory();
+	num_selected = 0;
+}