func (tv *TableView) updateSelectedIndexes() { count := int(tv.SendMessage(win.LVM_GETSELECTEDCOUNT, 0, 0)) indexes := make([]int, count) j := -1 for i := 0; i < count; i++ { j = int(tv.SendMessage(win.LVM_GETNEXTITEM, uintptr(j), win.LVNI_SELECTED)) indexes[i] = j } changed := len(indexes) != len(tv.selectedIndexes.items) if !changed { for i := 0; i < len(indexes); i++ { if indexes[i] != tv.selectedIndexes.items[i] { changed = true break } } } if changed { tv.selectedIndexes.items = indexes if tv.itemStateChangedEventDelay > 0 { if 0 == win.SetTimer( tv.hWnd, tableViewSelectedIndexesChangedTimerId, uint32(tv.itemStateChangedEventDelay), 0) { lastError("SetTimer") } } else { tv.selectedIndexesChangedPublisher.Publish() } } }
func (tv *TableView) WndProc(hwnd win.HWND, msg uint32, wParam, lParam uintptr) uintptr { switch msg { case win.WM_ERASEBKGND: if tv.lastColumnStretched && !tv.inEraseBkgnd { tv.inEraseBkgnd = true defer func() { tv.inEraseBkgnd = false }() tv.StretchLastColumn() } return 1 case win.WM_GETDLGCODE: if wParam == win.VK_RETURN { return win.DLGC_WANTALLKEYS } case win.WM_LBUTTONDOWN, win.WM_RBUTTONDOWN, win.WM_LBUTTONDBLCLK, win.WM_RBUTTONDBLCLK: var hti win.LVHITTESTINFO hti.Pt = win.POINT{win.GET_X_LPARAM(lParam), win.GET_Y_LPARAM(lParam)} tv.SendMessage(win.LVM_HITTEST, 0, uintptr(unsafe.Pointer(&hti))) if hti.Flags == win.LVHT_NOWHERE && tv.SingleItemSelection() { // We keep the current item, if in single item selection mode. tv.SetFocus() return 0 } switch msg { case win.WM_LBUTTONDOWN, win.WM_RBUTTONDOWN: if hti.Flags == win.LVHT_ONITEMSTATEICON && tv.itemChecker != nil && tv.CheckBoxes() { tv.toggleItemChecked(int(hti.IItem)) } } case win.WM_KEYDOWN: if wParam == win.VK_SPACE && tv.currentIndex > -1 && tv.itemChecker != nil && tv.CheckBoxes() { tv.toggleItemChecked(tv.currentIndex) } case win.WM_NOTIFY: switch int32(((*win.NMHDR)(unsafe.Pointer(lParam))).Code) { case win.LVN_GETDISPINFO: di := (*win.NMLVDISPINFO)(unsafe.Pointer(lParam)) row := int(di.Item.IItem) col := tv.fromLVColIdx(di.Item.ISubItem) if di.Item.Mask&win.LVIF_TEXT > 0 { var text string switch val := tv.model.Value(row, col).(type) { case string: text = val case float32: prec := tv.columns.items[col].precision if prec == 0 { prec = 2 } text = FormatFloatGrouped(float64(val), prec) case float64: prec := tv.columns.items[col].precision if prec == 0 { prec = 2 } text = FormatFloatGrouped(val, prec) case time.Time: text = val.Format(tv.columns.items[col].format) case *big.Rat: prec := tv.columns.items[col].precision if prec == 0 { prec = 2 } text = formatBigRatGrouped(val, prec) default: text = fmt.Sprintf(tv.columns.items[col].format, val) } utf16 := syscall.StringToUTF16(text) buf := (*[256]uint16)(unsafe.Pointer(di.Item.PszText)) max := mini(len(utf16), int(di.Item.CchTextMax)) copy((*buf)[:], utf16[:max]) } if tv.imageProvider != nil && di.Item.Mask&win.LVIF_IMAGE > 0 { if image := tv.imageProvider.Image(row); image != nil { if tv.hIml == 0 { tv.applyImageListForImage(image) } di.Item.IImage = imageIndexMaybeAdd( image, tv.hIml, tv.usingSysIml, tv.imageUintptr2Index, tv.filePath2IconIndex) } } if di.Item.StateMask&win.LVIS_STATEIMAGEMASK > 0 && tv.itemChecker != nil { checked := tv.itemChecker.Checked(row) if checked { di.Item.State = 0x2000 } else { di.Item.State = 0x1000 } } case win.NM_CUSTOMDRAW: if tv.alternatingRowBGColor != defaultTVRowBGColor { nmlvcd := (*win.NMLVCUSTOMDRAW)(unsafe.Pointer(lParam)) switch nmlvcd.Nmcd.DwDrawStage { case win.CDDS_PREPAINT: return win.CDRF_NOTIFYITEMDRAW case win.CDDS_ITEMPREPAINT: if nmlvcd.Nmcd.DwItemSpec%2 == 1 { nmlvcd.ClrTextBk = win.COLORREF(tv.alternatingRowBGColor) } } } return win.CDRF_DODEFAULT case win.LVN_COLUMNCLICK: nmlv := (*win.NMLISTVIEW)(unsafe.Pointer(lParam)) col := tv.fromLVColIdx(nmlv.ISubItem) tv.columnClickedPublisher.Publish(col) if sorter, ok := tv.model.(Sorter); ok && sorter.ColumnSortable(col) { prevCol := sorter.SortedColumn() var order SortOrder if col != prevCol || sorter.SortOrder() == SortDescending { order = SortAscending } else { order = SortDescending } sorter.Sort(col, order) } case win.LVN_ITEMCHANGED: nmlv := (*win.NMLISTVIEW)(unsafe.Pointer(lParam)) selectedNow := nmlv.UNewState&win.LVIS_SELECTED > 0 selectedBefore := nmlv.UOldState&win.LVIS_SELECTED > 0 if selectedNow && !selectedBefore { tv.currentIndex = int(nmlv.IItem) if tv.itemStateChangedEventDelay > 0 { if 0 == win.SetTimer( tv.hWnd, tableViewCurrentIndexChangedTimerId, uint32(tv.itemStateChangedEventDelay), 0) { lastError("SetTimer") } } else { tv.currentIndexChangedPublisher.Publish() } } if !tv.SingleItemSelection() { tv.updateSelectedIndexes() } case win.LVN_ITEMACTIVATE: tv.itemActivatedPublisher.Publish() } case win.WM_TIMER: switch wParam { case tableViewCurrentIndexChangedTimerId: tv.currentIndexChangedPublisher.Publish() case tableViewSelectedIndexesChangedTimerId: tv.selectedIndexesChangedPublisher.Publish() } } return tv.WidgetBase.WndProc(hwnd, msg, wParam, lParam) }