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Diffstat (limited to 'tablemodel.go')
| -rw-r--r-- | tablemodel.go | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/tablemodel.go b/tablemodel.go deleted file mode 100644 index b4ca7a4..0000000 --- a/tablemodel.go +++ /dev/null @@ -1,243 +0,0 @@ -// 24 august 2018 - -package ui - -// #include "ui.h" -// extern int doTableModelNumColumns(uiTableModelHandler *, uiTableModel *); -// extern uiTableValueType doTableModelColumnType(uiTableModelHandler *, uiTableModel *, int); -// extern int doTableModelNumRows(uiTableModelHandler *, uiTableModel *); -// extern uiTableValue *doTableModelCellValue(uiTableModelHandler *mh, uiTableModel *m, int row, int column); -// extern void doTableModelSetCellValue(uiTableModelHandler *, uiTableModel *, int, int, uiTableValue *); -// // deal with cgo being dumb -// static inline void realDoTableModelSetCellValue(uiTableModelHandler *mh, uiTableModel *m, int row, int column, const uiTableValue *value) -// { -// doTableModelSetCellValue(mh, m, row, column, (uiTableValue *) value); -// } -// // TODO why can't this be static? -// const uiTableModelHandler pkguiTableModelHandler = { -// .NumColumns = doTableModelNumColumns, -// .ColumnType = doTableModelColumnType, -// .NumRows = doTableModelNumRows, -// .CellValue = doTableModelCellValue, -// .SetCellValue = realDoTableModelSetCellValue, -// }; -import "C" - -// TableValue is a type that represents a piece of data that can come -// out of a TableModel. -type TableValue interface { - toLibui() *C.uiTableValue -} - -// TableString is a TableValue that stores a string. TableString is -// used for displaying text in a Table. -type TableString string - -func (s TableString) toLibui() *C.uiTableValue { - cs := C.CString(string(s)) - defer freestr(cs) - return C.uiNewTableValueString(cs) -} - -// TableImage is a TableValue that represents an Image. Ownership -// of the Image is not copied; you must keep it alive alongside the -// TableImage. -type TableImage struct { - I *Image -} - -func (i TableImage) toLibui() *C.uiTableValue { - return C.uiNewTableValueImage(i.I.i) -} - -// TableInt is a TableValue that stores integers. These are used for -// progressbars. Due to current limitations of libui, they also -// represent checkbox states, via TableFalse and TableTrue. -type TableInt int - -// TableFalse and TableTrue are the Boolean constants for TableInt. -const ( - TableFalse TableInt = 0 - TableTrue TableInt = 1 -) - -func (i TableInt) toLibui() *C.uiTableValue { - return C.uiNewTableValueInt(C.int(i)) -} - -// TableColor is a TableValue that represents a color. -type TableColor struct { - R float64 - G float64 - B float64 - A float64 -} - -func (c TableColor) toLibui() *C.uiTableValue { - return C.uiNewTableValueColor(C.double(c.R), C.double(c.G), C.double(c.B), C.double(c.A)) -} - -func tableValueFromLibui(value *C.uiTableValue) TableValue { - if value == nil { - return nil - } - switch C.uiTableValueGetType(value) { - case C.uiTableValueTypeString: - cs := C.uiTableValueString(value) - return TableString(C.GoString(cs)) - case C.uiTableValueTypeImage: - panic("TODO") - case C.uiTableValueTypeInt: - return TableInt(C.uiTableValueInt(value)) - case C.uiTableValueTypeColor: - panic("TODO") - } - panic("unreachable") -} - -// no need to lock these; only the GUI thread can access them -var modelhandlers = make(map[*C.uiTableModel]TableModelHandler) -var models = make(map[*C.uiTableModel]*TableModel) - -// TableModel is an object that provides the data for a Table. -// This data is returned via methods you provide in the -// TableModelHandler interface. -// -// TableModel represents data using a table, but this table does -// not map directly to Table itself. Instead, you can have data -// columns which provide instructions for how to render a given -// Table's column — for instance, one model column can be used -// to give certain rows of a Table a different background color. -// Row numbers DO match with uiTable row numbers. -// -// Once created, the number and data types of columns of a -// TableModel cannot change. -// -// Row and column numbers start at 0. A TableModel can be -// associated with more than one Table at a time. -type TableModel struct { - m *C.uiTableModel -} - -// TableModelHandler defines the methods that TableModel -// calls when it needs data. -type TableModelHandler interface { - // ColumnTypes returns a slice of value types of the data - // stored in the model columns of the TableModel. - // Each entry in the slice should ideally be a zero value for - // the TableValue type of the column in question; the number - // of elements in the slice determines the number of model - // columns in the TableModel. The returned slice must remain - // constant through the lifetime of the TableModel. This - // method is not guaranteed to be called depending on the - // system. - ColumnTypes(m *TableModel) []TableValue - - // NumRows returns the number or rows in the TableModel. - // This value must be non-negative. - NumRows(m *TableModel) int - - // CellValue returns a TableValue corresponding to the model - // cell at (row, column). The type of the returned TableValue - // must match column's value type. Under some circumstances, - // nil may be returned; refer to the various methods that add - // columns to Table for details. - CellValue(m *TableModel, row, column int) TableValue - - // SetCellValue changes the model cell value at (row, column) - // in the TableModel. Within this function, either do nothing - // to keep the current cell value or save the new cell value as - // appropriate. After SetCellValue is called, the Table will - // itself reload the table cell. Under certain conditions, the - // TableValue passed in can be nil; refer to the various - // methods that add columns to Table for details. - SetCellValue(m *TableModel, row, column int, value TableValue) -} - -//export doTableModelNumColumns -func doTableModelNumColumns(umh *C.uiTableModelHandler, um *C.uiTableModel) C.int { - mh := modelhandlers[um] - return C.int(len(mh.ColumnTypes(models[um]))) -} - -//export doTableModelColumnType -func doTableModelColumnType(umh *C.uiTableModelHandler, um *C.uiTableModel, n C.int) C.uiTableValueType { - mh := modelhandlers[um] - c := mh.ColumnTypes(models[um]) - switch c[n].(type) { - case TableString: - return C.uiTableValueTypeString - case TableImage: - return C.uiTableValueTypeImage - case TableInt: - return C.uiTableValueTypeInt - case TableColor: - return C.uiTableValueTypeColor - } - panic("unreachable") -} - -//export doTableModelNumRows -func doTableModelNumRows(umh *C.uiTableModelHandler, um *C.uiTableModel) C.int { - mh := modelhandlers[um] - return C.int(mh.NumRows(models[um])) -} - -//export doTableModelCellValue -func doTableModelCellValue(umh *C.uiTableModelHandler, um *C.uiTableModel, row, column C.int) *C.uiTableValue { - mh := modelhandlers[um] - v := mh.CellValue(models[um], int(row), int(column)) - if v == nil { - return nil - } - return v.toLibui() -} - -//export doTableModelSetCellValue -func doTableModelSetCellValue(umh *C.uiTableModelHandler, um *C.uiTableModel, row, column C.int, value *C.uiTableValue) { - mh := modelhandlers[um] - v := tableValueFromLibui(value) - mh.SetCellValue(models[um], int(row), int(column), v) -} - -// NewTableModel creates a new TableModel. -func NewTableModel(handler TableModelHandler) *TableModel { - m := &TableModel{ - m: C.uiNewTableModel(&C.pkguiTableModelHandler), - } - modelhandlers[m.m] = handler - models[m.m] = m - return m -} - -// Free frees m. It is an error to Free any models associated with a -// Table. -func (m *TableModel) Free() { - delete(models, m.m) - delete(modelhandlers, m.m) - C.uiFreeTableModel(m.m) -} - -// RowInserted tells any Tables associated with m that a new row -// has been added to m at index index. You call this method when -// the number of rows in your model has changed; after calling it, -// NumRows should returm the new row count. -func (m *TableModel) RowInserted(index int) { - C.uiTableModelRowInserted(m.m, C.int(index)) -} - -// RowChanged tells any Tables associated with m that the data in -// the row at index has changed. You do not need to call this in -// your SetCellValue handlers, but you do need to call this if your -// data changes at some other point. -func (m *TableModel) RowChanged(index int) { - C.uiTableModelRowChanged(m.m, C.int(index)) -} - -// RowDeleted tells any Tables associated with m that the row at -// index index has been deleted. You call this function when the -// number of rows in your model has changed; after calling it, -// NumRows should returm the new row count. -func (m *TableModel) RowDeleted(index int) { - C.uiTableModelRowDeleted(m.m, C.int(index)) -} |