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