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libs-gui/Source/NSTableView.m
Nicola Pero 10ad22071d Don't edit columns which are not editable 
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@7459 72102866-910b-0410-8b05-ffd578937521
2000-09-10 15:01:15 +00:00

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/*
NSTableView.m
Copyright (C) 2000 Free Software Foundation, Inc.
Author: Nicola Pero <n.pero@mi.flashnet.it>
Date: March 2000, June 2000, August 2000, September 2000
This file is part of the GNUstep GUI Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; see the file COPYING.LIB.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#import <AppKit/NSTableView.h>
#import <AppKit/NSApplication.h>
#import <AppKit/NSCell.h>
#import <AppKit/NSClipView.h>
#import <AppKit/NSColor.h>
#import <AppKit/NSEvent.h>
#import <AppKit/NSGraphics.h>
#import <AppKit/NSScroller.h>
#import <AppKit/NSTableColumn.h>
#import <AppKit/NSTableHeaderView.h>
#import <AppKit/NSText.h>
#import <AppKit/NSTextFieldCell.h>
#import <AppKit/NSWindow.h>
#import <AppKit/PSOperators.h>
static NSNotificationCenter *nc = nil;
/* The selection arrays are stored so that the selected columns/rows
are always in ascending order. The following function is used
whenever a new column/row is added to the array, to keep the
columns/rows in the correct order. */
static
void _insertNumberInSelectionArray (NSMutableArray *array,
NSNumber *num)
{
int i, count;
count = [array count];
for (i = 0; i < count; i++)
{
NSNumber *number;
number = [array objectAtIndex: i];
if ([number compare: num] == NSOrderedDescending)
break;
}
[array insertObject: num atIndex: i];
}
/*
* Now some auxiliary functions used to manage real-time user selections.
*
*/
static void
_selectRowsInRange (NSTableView *tv, id delegate,
int startRow, int endRow, int clickedRow)
{
int i;
int tmp;
int shift = 1;
/* Switch rows if in the wrong order */
if (startRow > endRow)
{
tmp = startRow;
startRow = endRow;
endRow = tmp;
shift = 0;
}
for (i = startRow + shift; i < endRow + shift; i++)
{
if (i != clickedRow)
{
if (delegate != nil)
{
if ([delegate tableView: tv shouldSelectRow: i] == NO)
continue;
}
[tv selectRow: i byExtendingSelection: YES];
[tv setNeedsDisplayInRect: [tv rectOfRow: i]];
}
}
}
static void
_deselectRowsInRange (NSTableView *tv, int startRow, int endRow,
int clickedRow)
{
int i;
int tmp;
int shift = 1;
if (startRow > endRow)
{
tmp = startRow;
startRow = endRow;
endRow = tmp;
shift = 0;
}
for (i = startRow + shift; i < endRow + shift; i++)
{
if (i != clickedRow)
{
[tv deselectRow: i];
[tv setNeedsDisplayInRect: [tv rectOfRow: i]];
}
}
}
/*
* The following function can work on columns or rows;
* passing the correct select/deselect function switches between one
* and the other. Currently used only for rows, anyway.
*/
static void
_selectionChange (NSTableView *tv, id delegate, int numberOfRows,
int clickedRow,
int oldSelectedRow, int newSelectedRow,
void (*deselectFunction)(NSTableView *, int, int, int),
void (*selectFunction)(NSTableView *, id, int, int, int))
{
int newDistance;
int oldDistance;
if (oldSelectedRow == newSelectedRow)
return;
/* Change coordinates - distance from the center of selection */
oldDistance = oldSelectedRow - clickedRow;
newDistance = newSelectedRow - clickedRow;
/* If they have different signs, then we decompose it into
two problems with the same sign */
if ((oldDistance * newDistance) < 0)
{
_selectionChange (tv, delegate, numberOfRows, clickedRow,
oldSelectedRow, clickedRow, deselectFunction,
selectFunction);
_selectionChange (tv, delegate, numberOfRows, clickedRow, clickedRow,
newSelectedRow, deselectFunction, selectFunction);
return;
}
/* Otherwise, take the modulus of the distances */
if (oldDistance < 0)
oldDistance = -oldDistance;
if (newDistance < 0)
newDistance = -newDistance;
/* If the new selection is more wide, we need to select */
if (newDistance > oldDistance)
{
selectFunction (tv, delegate, oldSelectedRow, newSelectedRow,
clickedRow);
}
else /* Otherwise to deselect */
{
deselectFunction (tv, newSelectedRow, oldSelectedRow, clickedRow);
}
}
static inline BOOL
_isCellEditable (id delegate, NSArray *tableColumns,
NSTableView *tableView, int row, int column)
{
SEL selector = @selector(tableView:shouldEditTableColumn:row:);
if ([delegate respondsToSelector: selector] == YES)
{
NSTableColumn *tb;
tb = [tableColumns objectAtIndex: column];
if ([delegate tableView: tableView shouldEditTableColumn: tb
row: row] == NO)
{
return NO;
}
}
return YES;
}
@interface GSTableCornerView : NSView
{}
@end
@implementation GSTableCornerView
- (void) drawRect: (NSRect)aRect
{
NSRect rect = _bounds;
NSDrawButton (rect, aRect);
[[NSColor controlShadowColor] set];
rect.size.width -= 4;
rect.size.height -= 4;
rect.origin.x += 2;
rect.origin.y += 2;
NSRectFill (rect);
}
@end
@interface NSTableView (TableViewInternalPrivate)
- (void) _setSelectingColumns: (BOOL)flag;
- (BOOL) _editNextEditableCellAfterRow: (int)row
column: (int)column;
- (BOOL) _editPreviousEditableCellBeforeRow: (int)row
column: (int)column;
@end
@implementation NSTableView
+ (void) initialize
{
if (self == [NSTableView class])
{
[self setVersion: 1];
nc = [NSNotificationCenter defaultCenter];
}
}
/*
* Initializing/Releasing
*/
- (id) initWithFrame: (NSRect)frameRect
{
self = [super initWithFrame: frameRect];
_drawsGrid = YES;
_rowHeight = 16.0;
_intercellSpacing = NSMakeSize (2.0, 3.0);
ASSIGN (_gridColor, [NSColor gridColor]);
ASSIGN (_backgroundColor, [NSColor controlBackgroundColor]);
ASSIGN (_tableColumns, [NSMutableArray array]);
ASSIGN (_selectedColumns, [NSMutableArray array]);
ASSIGN (_selectedRows, [NSMutableArray array]);
_allowsEmptySelection = YES;
_allowsMultipleSelection = NO;
_allowsColumnSelection = YES;
_allowsColumnResizing = YES;
_editedColumn = -1;
_editedRow = -1;
_selectedColumn = -1;
_selectedRow = -1;
_headerView = [NSTableHeaderView new];
[_headerView setFrameSize: NSMakeSize (frameRect.size.width, 22.0)];
[_headerView setTableView: self];
_cornerView = [GSTableCornerView new];
[self tile];
return self;
}
- (void) dealloc
{
TEST_RELEASE (_dataSource);
RELEASE (_gridColor);
RELEASE (_tableColumns);
RELEASE (_selectedColumns);
RELEASE (_selectedRows);
TEST_RELEASE (_headerView);
TEST_RELEASE (_cornerView);
if (_numberOfColumns > 0)
{
NSZoneFree (NSDefaultMallocZone (), _columnOrigins);
}
[super dealloc];
}
- (BOOL) isFlipped
{
return YES;
}
/*
* Table Dimensions
*/
- (int) numberOfColumns
{
return _numberOfColumns;
}
- (int) numberOfRows
{
return _numberOfRows;
}
/*
* Columns
*/
- (void) addTableColumn: (NSTableColumn *)aColumn
{
[aColumn setTableView: self];
[_tableColumns addObject: aColumn];
_numberOfColumns++;
if (_numberOfColumns > 1)
{
_columnOrigins = NSZoneRealloc (NSDefaultMallocZone (), _columnOrigins,
(sizeof (float)) * _numberOfColumns);
}
else
{
_columnOrigins = NSZoneMalloc (NSDefaultMallocZone (),
sizeof (float));
_columnOrigins = malloc (sizeof (float));
}
[self tile];
}
- (void) removeTableColumn: (NSTableColumn *)aColumn
{
int columnIndex = [self columnWithIdentifier: [aColumn identifier]];
int column, i, count;
if (columnIndex == -1)
{
NSLog (@"Warning: Tried to remove not-existent column from table");
return;
}
/* Remove selection on this column */
[self deselectColumn: columnIndex];
/* Shift column indexes on the right by one */
if (_selectedColumn > columnIndex)
{
_selectedColumn--;
}
count = [_selectedColumns count];
for (i = 0; i < count; i++)
{
column = [[_selectedColumns objectAtIndex: i] intValue];
if (column > columnIndex)
{
column--;
[_selectedColumns replaceObjectAtIndex: i
withObject: [NSNumber numberWithInt: column]];
}
}
/* Now really remove the column */
/* NB: Set table view to nil before removing the column from the
array, because removing it from the array could deallocate it ! */
[aColumn setTableView: nil];
[_tableColumns removeObject: aColumn];
_numberOfColumns--;
if (_numberOfColumns > 0)
{
_columnOrigins = NSZoneRealloc (NSDefaultMallocZone (), _columnOrigins,
(sizeof (float)) * _numberOfColumns);
}
else
{
NSZoneFree (NSDefaultMallocZone (), _columnOrigins);
}
[self tile];
}
- (void) moveColumn: (int)columnIndex toColumn: (int)newIndex
{
/* The range of columns which need to be shifted,
extremes included */
int minRange, maxRange;
/* Amount of shift for these columns */
int shift;
/* Dummy variables for the loop */
int i, count, column;
NSDictionary *dict;
if ((columnIndex < 0) || (columnIndex > (_numberOfColumns - 1)))
{
NSLog (@"Attempt to move column outside table");
return;
}
if ((newIndex < 0) || (newIndex > (_numberOfColumns - 1)))
{
NSLog (@"Attempt to move column to outside table");
return;
}
if (columnIndex == newIndex)
return;
if (columnIndex > newIndex)
{
minRange = newIndex;
maxRange = columnIndex - 1;
shift = +1;
}
else // columnIndex < newIndex
{
minRange = columnIndex + 1;
maxRange = newIndex;
shift = -1;
}
/* Rearrange selection */
if (_selectedColumn == columnIndex)
{
_selectedColumn = newIndex;
}
else if ((_selectedColumn >= minRange) && (_selectedColumn <= maxRange))
{
_selectedColumn += shift;
}
count = [_selectedColumns count];
for (i = 0; i < count; i++)
{
column = [[_selectedColumns objectAtIndex: i] intValue];
if (column == columnIndex)
{
[_selectedColumns replaceObjectAtIndex: i
withObject: [NSNumber numberWithInt: newIndex]];
continue;
}
if ((column >= minRange) && (column <= maxRange))
{
column += shift;
[_selectedColumns replaceObjectAtIndex: i
withObject: [NSNumber numberWithInt: column]];
continue;
}
if ((column > columnIndex) && (column > newIndex))
{
break;
}
}
/* Now really move the column */
if (columnIndex < newIndex)
{
[_tableColumns insertObject: [_tableColumns objectAtIndex: columnIndex]
atIndex: newIndex + 1];
[_tableColumns removeObjectAtIndex: columnIndex];
}
else
{
[_tableColumns insertObject: [_tableColumns objectAtIndex: columnIndex]
atIndex: newIndex];
[_tableColumns removeObjectAtIndex: columnIndex + 1];
}
/* Tile */
[self tile];
/* Post notification */
dict =[NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithInt: columnIndex], @"NSOldColumn",
[NSNumber numberWithInt: newIndex], @"NSNewColumn", nil];
[(NSNotificationCenter *)[NSNotificationCenter defaultCenter]
postNotificationName: NSTableViewColumnDidMoveNotification
object: self
userInfo: dict];
}
- (NSArray *) tableColumns
{
return AUTORELEASE ([_tableColumns mutableCopyWithZone:
NSDefaultMallocZone ()]);
}
- (int) columnWithIdentifier: (id)anObject
{
NSEnumerator *enumerator = [_tableColumns objectEnumerator];
NSTableColumn *tb;
int return_value = 0;
while ((tb = [enumerator nextObject]) != nil)
{
if ([[tb identifier] isEqual: anObject])
return return_value;
else
return_value++;
}
return -1;
}
- (NSTableColumn *) tableColumnWithIdentifier:(id)anObject
{
int indexOfColumn = [self columnWithIdentifier: anObject];
if (indexOfColumn == -1)
return nil;
else
return [_tableColumns objectAtIndex: indexOfColumn];
}
/*
* Data Source
*/
- (id) dataSource
{
return _dataSource;
}
- (void) setDataSource: (id)anObject
{
/* Used only for readability */
SEL sel_a = @selector (numberOfRowsInTableView:);
SEL sel_b = @selector (tableView:objectValueForTableColumn:row:);
if ([anObject respondsToSelector: sel_a] == NO)
{
[NSException
raise: NSInternalInconsistencyException
format: @"Data Source doesn't respond to numberOfRowsInTableView:"];
}
if ([anObject respondsToSelector: sel_b] == NO)
{
[NSException raise: NSInternalInconsistencyException
format: @"Data Source doesn't respond to "
@"tableView:objectValueForTableColumn:row:"];
}
ASSIGN (_dataSource, anObject);
[self tile];
[self reloadData];
}
/*
* Loading data
*/
- (void) reloadData
{
[self noteNumberOfRowsChanged];
[self setNeedsDisplay: YES];
}
/*
* Target-action
*/
- (void) setDoubleAction: (SEL)aSelector
{
_doubleAction = aSelector;
}
- (SEL) doubleAction
{
return _doubleAction;
}
- (void) setTarget:(id)anObject
{
_target = anObject;
}
- (id) target
{
return _target;
}
- (int) clickedColumn
{
return _clickedColumn;
}
- (int) clickedRow
{
return _clickedRow;
}
/*
* The NSTableHeaderView calls this method when it receives a double click.
*/
- (void) _sendDoubleActionForColumn: (int)columnIndex
{
_clickedColumn = columnIndex;
_clickedRow = -1;
[self sendAction: _doubleAction to: _target];
}
/*
* And this when it gets a simple click which turns out to be for
* selecting/deselecting a column.
*/
- (void) _selectColumn: (int)columnIndex
modifiers: (unsigned int)modifiers
{
SEL selector;
if (_allowsColumnSelection == NO)
return;
if ([self isColumnSelected: columnIndex] == YES)
{
if (([_selectedColumns count] == 1) && (_allowsEmptySelection == NO))
return;
selector = @selector (selectionShouldChangeInTableView:);
if ([_delegate respondsToSelector: selector] == YES)
{
if ([_delegate selectionShouldChangeInTableView: self] == NO)
{
return;
}
}
if (_selectingColumns == NO)
{
[self _setSelectingColumns: YES];
}
[self deselectColumn: columnIndex];
[self setNeedsDisplayInRect: [self rectOfColumn: columnIndex]];
return;
}
else // column is not selected
{
BOOL newSelection;
if ((modifiers & (NSShiftKeyMask | NSAlternateKeyMask))
&& _allowsMultipleSelection)
newSelection = NO;
else
newSelection = YES;
if (([_selectedColumns count] > 0) && (_allowsMultipleSelection == NO)
&& (newSelection == NO))
{
return;
}
selector = @selector (selectionShouldChangeInTableView:);
if ([_delegate respondsToSelector: selector] == YES)
{
if ([_delegate selectionShouldChangeInTableView: self] == NO)
{
return;
}
}
selector = @selector (tableView:shouldSelectTableColumn:);
if ([_delegate respondsToSelector: selector] == YES)
{
NSTableColumn *tc = [_tableColumns objectAtIndex: columnIndex];
if ([_delegate tableView: self shouldSelectTableColumn: tc] == NO)
{
return;
}
}
if (_selectingColumns == NO)
{
[self _setSelectingColumns: YES];
}
if (newSelection == YES)
{
/* No shift or alternate key pressed: clear the old selection */
/* Compute rect to redraw to clear the old selection */
int column, i, count = [_selectedColumns count];
for (i = 0; i < count; i++)
{
column = [[_selectedColumns objectAtIndex: i] intValue];
[self setNeedsDisplayInRect: [self rectOfColumn: column]];
}
/* Draw the new selection */
[self selectColumn: columnIndex byExtendingSelection: NO];
[self setNeedsDisplayInRect: [self rectOfColumn: columnIndex]];
}
else /* Simply add to the old selection */
{
[self selectColumn: columnIndex byExtendingSelection: YES];
[self setNeedsDisplayInRect: [self rectOfColumn: columnIndex]];
}
}
}
/*
*Configuration
*/
- (void) setAllowsColumnReordering: (BOOL)flag
{
// TODO
}
- (BOOL) allowsColumnReordering
{
// TODO
return NO;
}
- (void) setAllowsColumnResizing: (BOOL)flag
{
_allowsColumnResizing = flag;
}
- (BOOL) allowsColumnResizing
{
return _allowsColumnResizing;
}
- (void) setAllowsMultipleSelection: (BOOL)flag
{
_allowsMultipleSelection = flag;
}
- (BOOL) allowsMultipleSelection
{
return _allowsMultipleSelection;
}
- (void) setAllowsEmptySelection: (BOOL)flag
{
_allowsEmptySelection = flag;
}
- (BOOL) allowsEmptySelection
{
return _allowsEmptySelection;
}
- (void) setAllowsColumnSelection: (BOOL)flag
{
_allowsColumnSelection = flag;
}
- (BOOL) allowsColumnSelection
{
return _allowsColumnSelection;
}
/*
* Drawing Attributes
*/
- (void) setIntercellSpacing: (NSSize)aSize
{
_intercellSpacing = aSize;
[self setNeedsDisplay: YES];
}
- (NSSize) intercellSpacing
{
return _intercellSpacing;
}
- (void) setRowHeight: (float)rowHeight
{
_rowHeight = rowHeight;
[self tile];
}
- (float) rowHeight
{
return _rowHeight;
}
- (void) setBackgroundColor: (NSColor *)aColor
{
ASSIGN (_backgroundColor, aColor);
}
- (NSColor *) backgroundColor
{
return _backgroundColor;
}
/*
* Selecting Columns and Rows
*/
- (void) selectColumn: (int)columnIndex
byExtendingSelection: (BOOL)flag
{
NSNumber *num = [NSNumber numberWithInt: columnIndex];
if (columnIndex < 0 || columnIndex > _numberOfColumns)
{
[NSException raise: NSInvalidArgumentException
format: @"Column index out of table in selectColumn"];
}
_selectingColumns = YES;
if (flag == NO)
{
if (_numberOfColumns == 1)
{
/* Extreme case - we are asked to deselect then select the
same column. */
return;
}
[_selectedColumns removeAllObjects];
_selectedColumn = -1;
}
else // flag == YES
{
if (_allowsMultipleSelection == NO)
{
[NSException raise: NSInternalInconsistencyException
format: @"Can not extend selection in table view when multiple selection is disabled"];
}
}
/* Stop editing if any */
if (_textObject != nil)
{
[self validateEditing];
[self abortEditing];
}
/* Now select the column and post notification only if needed */
if ([_selectedColumns containsObject: num] == NO)
{
_insertNumberInSelectionArray (_selectedColumns, num);
_selectedColumn = columnIndex;
[nc postNotificationName: NSTableViewSelectionDidChangeNotification
object: self];
}
else /* Otherwise simply change the last selected column */
{
_selectedColumn = columnIndex;
}
}
- (void) selectRow: (int)rowIndex
byExtendingSelection: (BOOL)flag
{
NSNumber *num = [NSNumber numberWithInt: rowIndex];
if (rowIndex < 0 || rowIndex > _numberOfRows)
{
[NSException raise: NSInvalidArgumentException
format: @"Row index out of table in selectRow"];
}
_selectingColumns = NO;
if (flag == NO)
{
if (_numberOfRows == 1)
{
/* Extreme case - we are asked to deselect then select the
same row. */
return;
}
[_selectedRows removeAllObjects];
_selectedRow = -1;
}
else // flag == YES
{
if (_allowsMultipleSelection == NO)
{
[NSException raise: NSInternalInconsistencyException
format: @"Can not extend selection in table view when multiple selection is disabled"];
}
}
/* Stop editing if any */
if (_textObject != nil)
{
[self validateEditing];
[self abortEditing];
}
/* Now select the row and post notification only if needed */
if ([_selectedRows containsObject: num] == NO)
{
_insertNumberInSelectionArray (_selectedRows, num);
_selectedRow = rowIndex;
[nc postNotificationName: NSTableViewSelectionDidChangeNotification
object: self];
}
else /* Otherwise simply change the last selected row */
{
_selectedRow = rowIndex;
}
}
- (void) deselectColumn: (int)columnIndex
{
NSNumber *num = [NSNumber numberWithInt: columnIndex];
if ([_selectedColumns containsObject: num] == NO)
{
return;
}
/* Now by internal consistency we assume columnIndex is in fact a
valid column index, since it was the index of a selected column */
if (_textObject != nil)
{
[self validateEditing];
[self abortEditing];
}
_selectingColumns = YES;
[_selectedColumns removeObject: num];
if (_selectedColumn == columnIndex)
{
int i, count = [_selectedColumns count];
int nearestColumn = -1;
int nearestColumnDistance = _numberOfColumns;
int column, distance;
for (i = 0; i < count; i++)
{
column = [[_selectedColumns objectAtIndex: i] intValue];
distance = column - columnIndex;
if (distance < 0)
{
distance = -distance;
}
if (distance < nearestColumnDistance)
{
nearestColumn = column;
}
}
_selectedColumn = nearestColumn;
}
[nc postNotificationName: NSTableViewSelectionDidChangeNotification
object: self];
}
- (void) deselectRow: (int)rowIndex
{
NSNumber *num = [NSNumber numberWithInt: rowIndex];
if ([_selectedRows containsObject: num] == NO)
{
return;
}
if (_textObject != nil)
{
[self validateEditing];
[self abortEditing];
}
_selectingColumns = NO;
[_selectedRows removeObject: num];
if (_selectedRow == rowIndex)
{
int i, count = [_selectedRows count];
int nearestRow = -1;
int nearestRowDistance = _numberOfRows;
int row, distance;
for (i = 0; i < count; i++)
{
row = [[_selectedRows objectAtIndex: i] intValue];
distance = row - rowIndex;
if (distance < 0)
{
distance = -distance;
}
if (distance < nearestRowDistance)
{
nearestRow = row;
}
}
_selectedRow = nearestRow;
}
[nc postNotificationName: NSTableViewSelectionDidChangeNotification
object: self];
}
- (int) numberOfSelectedColumns
{
return [_selectedColumns count];
}
- (int) numberOfSelectedRows
{
return [_selectedRows count];
}
- (int) selectedColumn
{
return _selectedColumn;
}
- (int) selectedRow
{
return _selectedRow;
}
- (BOOL) isColumnSelected: (int)columnIndex
{
NSNumber *num = [NSNumber numberWithInt: columnIndex];
return [_selectedColumns containsObject: num];
}
- (BOOL) isRowSelected: (int)rowIndex
{
NSNumber *num = [NSNumber numberWithInt: rowIndex];
return [_selectedRows containsObject: num];
}
- (NSEnumerator *) selectedColumnEnumerator
{
return [_selectedColumns objectEnumerator];
}
- (NSEnumerator *) selectedRowEnumerator
{
return [_selectedRows objectEnumerator];
}
- (void) selectAll: (id) sender
{
SEL selector;
if (_allowsMultipleSelection == NO)
return;
/* Ask the delegate if we can select all columns or rows */
if (_selectingColumns == YES)
{
if ([_selectedColumns count] == _numberOfColumns)
{
// Nothing to do !
return;
}
selector = @selector (tableView:shouldSelectTableColumn:);
if ([_delegate respondsToSelector: selector] == YES)
{
NSEnumerator *enumerator = [_tableColumns objectEnumerator];
NSTableColumn *tb;
while ((tb = [enumerator nextObject]) != nil)
{
if ([_delegate tableView: self
shouldSelectTableColumn: tb] == NO)
{
return;
}
}
}
}
else // selecting rows
{
if ([_selectedRows count] == _numberOfRows)
{
// Nothing to do !
return;
}
selector = @selector (tableView:shouldSelectRow:);
if ([_delegate respondsToSelector: selector] == YES)
{
int row;
for (row = 0; row < _numberOfRows; row++)
{
if ([_delegate tableView: self shouldSelectRow: row] == NO)
return;
}
}
}
/* Stop editing if any */
if (_textObject != nil)
{
[self validateEditing];
[self abortEditing];
}
/* Do the real selection */
if (_selectingColumns == YES)
{
int column;
[_selectedColumns removeAllObjects];
for (column = 0; column < _numberOfColumns; column++)
{
NSNumber *num = [NSNumber numberWithInt: column];
[_selectedColumns addObject: num];
}
}
else // selecting rows
{
int row;
[_selectedRows removeAllObjects];
for (row = 0; row < _numberOfRows; row++)
{
NSNumber *num = [NSNumber numberWithInt: row];
[_selectedRows addObject: num];
}
}
[nc postNotificationName: NSTableViewSelectionDidChangeNotification
object: self];
}
- (void) deselectAll: (id) sender
{
SEL selector;
if (_allowsEmptySelection == NO)
return;
selector = @selector (selectionShouldChangeInTableView:);
if ([_delegate respondsToSelector: selector] == YES)
{
if ([_delegate selectionShouldChangeInTableView: self] == NO)
{
return;
}
}
if (_textObject != nil)
{
[self validateEditing];
[self abortEditing];
}
if (([_selectedColumns count] > 0) || ([_selectedRows count] > 0))
{
[_selectedColumns removeAllObjects];
[_selectedRows removeAllObjects];
[nc postNotificationName: NSTableViewSelectionDidChangeNotification
object: self];
}
_selectedColumn = -1;
_selectedRow = -1;
_selectingColumns = NO;
}
/*
* Grid Drawing attributes
*/
- (void) setDrawsGrid: (BOOL)flag
{
_drawsGrid = flag;
}
- (BOOL) drawsGrid
{
return _drawsGrid;
}
- (void) setGridColor: (NSColor *)aColor
{
ASSIGN (_gridColor, aColor);
}
- (NSColor *) gridColor
{
return _gridColor;
}
/*
* Editing Cells
*/
- (BOOL) abortEditing
{
if (_textObject)
{
[_textObject setString: @""];
[_editedCell endEditing: _textObject];
RELEASE (_editedCell);
[self setNeedsDisplayInRect:
[self frameOfCellAtColumn: _editedColumn row: _editedRow]];
_editedRow = -1;
_editedColumn = -1;
_editedCell = nil;
_textObject = nil;
return YES;
}
else
return NO;
}
- (NSText *) currentEditor
{
if (_textObject && ([_window firstResponder] == _textObject))
return _textObject;
else
return nil;
}
- (void) validateEditing
{
if (_textObject)
{
NSFormatter *formatter;
NSString *string;
id newObjectValue;
BOOL validatedOK = YES;
formatter = [_editedCell formatter];
string = [_textObject text];
if (formatter == nil)
{
newObjectValue = string;
}
else
{
NSString *error;
if ([formatter getObjectValue: &newObjectValue
forString: string
errorDescription: &error] == NO)
{
if ([_delegate control: self
didFailToFormatString: string
errorDescription: error] == NO)
{
validatedOK = NO;
}
else
{
newObjectValue = string;
}
}
}
if (validatedOK == YES)
{
[_editedCell setObjectValue: newObjectValue];
if (_del_editable)
{
NSTableColumn *tb;
tb = [_tableColumns objectAtIndex: _editedColumn];
[_delegate tableView: self setObjectValue: newObjectValue
forTableColumn: tb row: _editedRow];
}
}
}
}
- (void) editColumn: (int) columnIndex
row: (int) rowIndex
withEvent: (NSEvent *) theEvent
select: (BOOL) flag
{
NSText *t;
NSTableColumn *tb;
NSRect drawingRect;
// We refuse to edit cells if the delegate can not accept results
// of editing.
if (_del_editable == NO)
{
return;
}
[self scrollRowToVisible: rowIndex];
[self scrollColumnToVisible: columnIndex];
if (rowIndex < 0 || rowIndex >= _numberOfRows
|| columnIndex < 0 || columnIndex >= _numberOfColumns)
{
[NSException raise: NSInvalidArgumentException
format: @"Row/column out of index in edit"];
}
if (_textObject != nil)
{
[self validateEditing];
[self abortEditing];
}
// Now (_textObject == nil)
t = [_window fieldEditor: YES forObject: self];
if ([t superview] != nil)
if ([t resignFirstResponder] == NO)
return;
_editedRow = rowIndex;
_editedColumn = columnIndex;
// Prepare the cell
tb = [_tableColumns objectAtIndex: columnIndex];
// NB: need to be released when no longer used
_editedCell = [[tb dataCell] copy];
[_editedCell setEditable: YES];
[_editedCell setObjectValue: [_dataSource tableView: self
objectValueForTableColumn: tb
row: rowIndex]];
// We really want the correct background color!
if ([_editedCell respondsToSelector: @selector(setBackgroundColor:)])
{
[(NSTextFieldCell *)_editedCell setBackgroundColor: _backgroundColor];
}
else
{
[t setBackgroundColor: _backgroundColor];
}
// But of course the delegate can mess it up if it wants
if (_del_responds)
{
[_delegate tableView: self willDisplayCell: _editedCell
forTableColumn: tb row: rowIndex];
}
_textObject = [_editedCell setUpFieldEditorAttributes: t];
// Now edit it
drawingRect = [self frameOfCellAtColumn: columnIndex
row: rowIndex];
if (flag)
{
[_editedCell selectWithFrame: drawingRect
inView: self
editor: _textObject
delegate: self
start: 0
length: [[_editedCell stringValue] length]];
}
else
{
[_editedCell editWithFrame: drawingRect
inView: self
editor: _textObject
delegate: self
event: theEvent];
}
return;
}
- (int) editedRow
{
return _editedRow;
}
- (int) editedColumn
{
return _editedColumn;
}
- (void) _setSelectingColumns: (BOOL)flag
{
if (flag == _selectingColumns)
return;
if (flag == NO)
{
/* Compute rect to redraw to clear the old column selection */
int column, i, count = [_selectedColumns count];
for (i = 0; i < count; i++)
{
column = [[_selectedColumns objectAtIndex: i] intValue];
[self setNeedsDisplayInRect: [self rectOfColumn: column]];
}
[_selectedColumns removeAllObjects];
_selectedColumn = -1;
_selectingColumns = NO;
}
else
{
/* Compute rect to redraw to clear the old row selection */
int row, i, count = [_selectedRows count];
for (i = 0; i < count; i++)
{
row = [[_selectedRows objectAtIndex: i] intValue];
[self setNeedsDisplayInRect: [self rectOfRow: row]];
}
[_selectedRows removeAllObjects];
_selectedRow = -1;
_selectingColumns = YES;
}
}
- (void) mouseDown: (NSEvent *)theEvent
{
NSPoint location = [theEvent locationInWindow];
NSTableColumn *tb;
int clickCount;
BOOL shouldEdit;
//
// Pathological case -- ignore mouse down
//
if ((_numberOfRows == 0) || (_numberOfColumns == 0))
{
[super mouseDown: theEvent];
return;
}
clickCount = [theEvent clickCount];
if (clickCount > 2)
return;
// Determine row and column which were clicked
location = [self convertPoint: location fromView: nil];
_clickedRow = [self rowAtPoint: location];
_clickedColumn = [self columnAtPoint: location];
// Selection
if (clickCount == 1)
{
SEL selector;
if ([self isRowSelected: _clickedRow] == YES)
{
if (([_selectedRows count] == 1) && (_allowsEmptySelection == NO))
return;
selector = @selector (selectionShouldChangeInTableView:);
if ([_delegate respondsToSelector: selector] == YES)
{
if ([_delegate selectionShouldChangeInTableView: self] == NO)
{
return;
}
}
if (_selectingColumns == YES)
{
[self _setSelectingColumns: NO];
}
[self deselectRow: _clickedRow];
[self setNeedsDisplayInRect: [self rectOfRow: _clickedRow]];
return;
}
else // row is not selected
{
unsigned int modifiers;
BOOL newSelection;
modifiers = [theEvent modifierFlags];
if ((modifiers & (NSShiftKeyMask | NSAlternateKeyMask))
&& _allowsMultipleSelection)
newSelection = NO;
else
newSelection = YES;
selector = @selector (selectionShouldChangeInTableView:);
if ([_delegate respondsToSelector: selector] == YES)
{
if ([_delegate selectionShouldChangeInTableView: self] == NO)
{
return;
}
}
selector = @selector (tableView:shouldSelectRow:);
if ([_delegate respondsToSelector: selector] == YES)
{
if ([_delegate tableView: self
shouldSelectRow: _clickedRow] == NO)
{
return;
}
}
if (_selectingColumns == YES)
{
[self _setSelectingColumns: NO];
}
if (newSelection == YES)
{
/* No shift or alternate key pressed: clear the old selection */
/* Compute rect to redraw to clear the old selection */
int row, i, count = [_selectedRows count];
for (i = 0; i < count; i++)
{
row = [[_selectedRows objectAtIndex: i] intValue];
[self setNeedsDisplayInRect: [self rectOfRow: row]];
}
/* Draw the new selection */
[self selectRow: _clickedRow byExtendingSelection: NO];
[self setNeedsDisplayInRect: [self rectOfRow: _clickedRow]];
}
else /* Simply add to the old selection */
{
[self selectRow: _clickedRow byExtendingSelection: YES];
[self setNeedsDisplayInRect: [self rectOfRow: _clickedRow]];
}
if (_allowsMultipleSelection == NO)
{
return;
}
/* else, we track the mouse to allow extending selection to
areas by dragging the mouse */
/* Draw immediately because we are going to enter an event
loop to track the mouse */
[_window flushWindow];
/* We track the cursor and highlight according to the cursor
position. When the cursor gets out (up or down) of the
table, we start periodic events and scroll periodically
the table enlarging or reducing selection. */
{
BOOL startedPeriodicEvents = NO;
unsigned int eventMask = (NSLeftMouseUpMask
| NSLeftMouseDraggedMask
| NSPeriodicMask);
NSEvent *lastEvent;
BOOL done = NO;
NSPoint mouseLocationWin;
NSDate *distantFuture = [NSDate distantFuture];
int lastSelectedRow = _clickedRow;
NSRect visibleRect = [self convertRect: [self visibleRect]
toView: nil];
float minYVisible = NSMinY (visibleRect);
float maxYVisible = NSMaxY (visibleRect);
BOOL delegateTakesPart;
BOOL mouseUp = NO;
/* We have three zones of speed.
0 - 50 pixels: period 0.2 <zone 1>
50 - 100 pixels: period 0.1 <zone 2>
100 - 150 pixels: period 0.01 <zone 3> */
float oldPeriod = 0;
inline float computePeriod ()
{
float distance = 0;
if (mouseLocationWin.y < minYVisible)
{
distance = minYVisible - mouseLocationWin.y;
}
else if (mouseLocationWin.y > maxYVisible)
{
distance = mouseLocationWin.y - maxYVisible;
}
if (distance < 50)
return 0.2;
else if (distance < 100)
return 0.1;
else
return 0.01;
}
selector = @selector (tableView:shouldSelectRow:);
delegateTakesPart = [_delegate respondsToSelector: selector];
while (done != YES)
{
lastEvent = [NSApp nextEventMatchingMask: eventMask
untilDate: distantFuture
inMode: NSEventTrackingRunLoopMode
dequeue: YES];
switch ([lastEvent type])
{
case NSLeftMouseUp:
done = YES;
break;
case NSLeftMouseDragged:
mouseLocationWin = [lastEvent locationInWindow];
if ((mouseLocationWin.y > minYVisible)
&& (mouseLocationWin.y < maxYVisible))
{
NSPoint mouseLocationView;
int rowAtPoint;
if (startedPeriodicEvents == YES)
{
[NSEvent stopPeriodicEvents];
startedPeriodicEvents = NO;
}
mouseLocationView = [self convertPoint:
mouseLocationWin
fromView: nil];
mouseLocationView.x = _bounds.origin.x;
rowAtPoint = [self rowAtPoint: mouseLocationView];
if (delegateTakesPart == YES)
{
_selectionChange (self, _delegate,
_numberOfRows, _clickedRow,
lastSelectedRow, rowAtPoint,
_deselectRowsInRange,
_selectRowsInRange);
}
else
{
_selectionChange (self, nil,
_numberOfRows, _clickedRow,
lastSelectedRow, rowAtPoint,
_deselectRowsInRange,
_selectRowsInRange);
}
lastSelectedRow = rowAtPoint;
[_window flushWindow];
[nc postNotificationName:
NSTableViewSelectionIsChangingNotification
object: self];
}
else /* Mouse dragged out of the table */
{
if (startedPeriodicEvents == YES)
{
/* Check - if the mouse did not change zone,
we do nothing */
if (computePeriod () == oldPeriod)
break;
[NSEvent stopPeriodicEvents];
}
/* Start periodic events */
oldPeriod = computePeriod ();
[NSEvent startPeriodicEventsAfterDelay: 0
withPeriod: oldPeriod];
startedPeriodicEvents = YES;
if (mouseLocationWin.y <= minYVisible)
mouseUp = NO;
else
mouseUp = YES;
}
break;
case NSPeriodic:
if (mouseUp == NO) // mouse below the table
{
if (lastSelectedRow < _clickedRow)
{
[self deselectRow: lastSelectedRow];
[self setNeedsDisplayInRect:
[self rectOfRow: lastSelectedRow]];
[self scrollRowToVisible: lastSelectedRow];
[_window flushWindow];
lastSelectedRow++;
}
else
{
if ((lastSelectedRow + 1) < _numberOfRows)
{
lastSelectedRow++;
if ((delegateTakesPart == YES) &&
([_delegate
tableView: self
shouldSelectRow: lastSelectedRow]
== NO))
{
break;
}
[self selectRow: lastSelectedRow
byExtendingSelection: YES];
[self setNeedsDisplayInRect:
[self rectOfRow: lastSelectedRow]];
[self scrollRowToVisible: lastSelectedRow];
[_window flushWindow];
}
}
}
else /* mouse above the table */
{
if (lastSelectedRow <= _clickedRow)
{
if ((lastSelectedRow - 1) >= 0)
{
lastSelectedRow--;
if ((delegateTakesPart == YES) &&
([_delegate
tableView: self
shouldSelectRow: lastSelectedRow]
== NO))
{
break;
}
[self selectRow: lastSelectedRow
byExtendingSelection: YES];
[self setNeedsDisplayInRect:
[self rectOfRow: lastSelectedRow]];
[self scrollRowToVisible: lastSelectedRow];
[_window flushWindow];
}
}
else
{
[self deselectRow: lastSelectedRow];
[self setNeedsDisplayInRect:
[self rectOfRow: lastSelectedRow]];
[self scrollRowToVisible: lastSelectedRow];
[_window flushWindow];
lastSelectedRow--;
}
}
[nc postNotificationName:
NSTableViewSelectionIsChangingNotification
object: self];
break;
default:
break;
}
}
if (startedPeriodicEvents == YES)
[NSEvent stopPeriodicEvents];
[nc postNotificationName:
NSTableViewSelectionDidChangeNotification
object: self];
return;
}
}
}
// Double-click events
if ([self isRowSelected: _clickedRow] == NO)
return;
tb = [_tableColumns objectAtIndex: _clickedColumn];
shouldEdit = YES;
if ([tb isEditable] == NO)
{
shouldEdit = NO;
}
else if ([_delegate respondsToSelector:
@selector(tableView:shouldEditTableColumn:row:)])
{
if ([_delegate tableView: self shouldEditTableColumn: tb
row: _clickedRow] == NO)
{
shouldEdit = NO;
}
}
if (shouldEdit == NO)
{
// Send double-action but don't edit
[self sendAction: _doubleAction to: _target];
return;
}
// It is OK to edit column. Go on, do it.
[self editColumn: _clickedColumn row: _clickedRow
withEvent: theEvent select: NO];
}
/*
* Auxiliary Components
*/
- (void) setHeaderView: (NSTableHeaderView*)aHeaderView
{
if (_super_view != nil)
{
/* Changing the headerView after the table has been linked to a
scrollview is not yet supported - the doc is not clear
whether it should be supported at all. If it is, perhaps
it's going to be done through a private method between the
tableview and the scrollview. */
NSLog (@"setHeaderView: called after NSTableView has been put "
@"in the view tree!");
}
[_headerView setTableView: nil];
ASSIGN (_headerView, aHeaderView);
[_headerView setTableView: self];
[self tile];
}
- (NSTableHeaderView*) headerView
{
return _headerView;
}
- (void) setCornerView: (NSView*)aView
{
ASSIGN (_cornerView, aView);
[self tile];
}
- (NSView*) cornerView
{
return _cornerView;
}
/*
* Layout
*/
- (NSRect) rectOfColumn: (int)columnIndex
{
NSRect rect;
if (columnIndex < 0)
{
[NSException
raise: NSInternalInconsistencyException
format: @"ColumnIndex < 0 in [NSTableView -rectOfColumn:]"];
}
if (columnIndex >= _numberOfColumns)
{
[NSException
raise: NSInternalInconsistencyException
format: @"ColumnIndex => _numberOfColumns in [NSTableView -rectOfColumn:]"];
}
rect.origin.x = _columnOrigins[columnIndex];
rect.origin.y = _bounds.origin.y;
rect.size.width = [[_tableColumns objectAtIndex: columnIndex] width];
rect.size.height = _bounds.size.height;
return rect;
}
- (NSRect) rectOfRow: (int)rowIndex
{
NSRect rect;
if (rowIndex < 0)
{
[NSException
raise: NSInternalInconsistencyException
format: @"RowIndex < 0 in [NSTableView -rectOfRow:]"];
}
if (rowIndex >= _numberOfRows)
{
[NSException
raise: NSInternalInconsistencyException
format: @"RowIndex => _numberOfRows in [NSTableView -rectOfRow:]"];
}
rect.origin.x = _bounds.origin.x;
rect.origin.y = _bounds.origin.y + (_rowHeight * rowIndex);
rect.size.width = _bounds.size.width;
rect.size.height = _rowHeight;
return rect;
}
- (NSRange) columnsInRect: (NSRect)aRect
{
NSRange range;
range.location = [self columnAtPoint: aRect.origin];
range.length = [self columnAtPoint:
NSMakePoint (NSMaxX (aRect), _bounds.origin.y)];
range.length -= range.location;
range.length += 1;
return range;
}
- (NSRange) rowsInRect: (NSRect)aRect
{
NSRange range;
range.location = [self rowAtPoint: aRect.origin];
range.length = [self rowAtPoint:
NSMakePoint (_bounds.origin.x, NSMaxY (aRect))];
range.length -= range.location;
range.length += 1;
return range;
}
- (int) columnAtPoint: (NSPoint)aPoint
{
if ((NSMouseInRect (aPoint, _bounds, YES)) == NO)
return -1;
else
{
int i = 0;
while ((aPoint.x > _columnOrigins[i]) && (i < _numberOfColumns))
{
i++;
}
return i - 1;
}
}
- (int) rowAtPoint: (NSPoint)aPoint
{
/* NB: Y coordinate system is flipped in NSTableView */
if ((NSMouseInRect (aPoint, _bounds, YES)) == NO)
return -1;
else
{
int return_value;
aPoint.y -= _bounds.origin.y;
return_value = (int) (aPoint.y / _rowHeight);
/* This could happen if point lies on the grid line below the last row */
if (return_value == _numberOfRows)
{
return_value--;
}
return return_value;
}
}
- (NSRect) frameOfCellAtColumn: (int)columnIndex
row: (int)rowIndex
{
NSRect frameRect;
if ((columnIndex < 0)
|| (rowIndex < 0)
|| (columnIndex > (_numberOfColumns - 1))
|| (rowIndex > (_numberOfRows - 1)))
return NSZeroRect;
frameRect.origin.y = _bounds.origin.y + (rowIndex * _rowHeight);
frameRect.origin.y += _intercellSpacing.height / 2;
frameRect.size.height = _rowHeight - _intercellSpacing.height;
frameRect.origin.x = _columnOrigins[columnIndex];
frameRect.origin.x += _intercellSpacing.width / 2;
frameRect.size.width = [[_tableColumns objectAtIndex: columnIndex] width];
frameRect.size.width -= _intercellSpacing.width;
// We add some space to separate the cell from the grid
if (_drawsGrid)
{
frameRect.size.width -= 4;
frameRect.origin.x += 2;
}
// Safety check
if (frameRect.size.width < 0)
frameRect.size.width = 0;
return frameRect;
}
- (void) setAutoresizesAllColumnsToFit: (BOOL)flag
{
// TODO
}
- (BOOL) autoresizesAllColumnsToFit
{
//TODO
return NO;
}
- (void) sizeLastColumnToFit
{
if ((_super_view != nil) && (_numberOfColumns > 0))
{
float excess_width;
float last_column_width;
NSTableColumn *lastColumn;
excess_width = NSMaxX ([self convertRect: [_super_view bounds]
fromView: _super_view]);
excess_width -= NSMaxX (_bounds);
lastColumn = [_tableColumns objectAtIndex: (_numberOfColumns - 1)];
last_column_width = [lastColumn width];
last_column_width += excess_width;
[lastColumn setWidth: last_column_width];
[self tile];
}
}
- (void) sizeToFit
{
NSCell *cell;
NSEnumerator *enumerator;
NSTableColumn *tb;
float table_width;
float width;
float candidate_width;
int row;
_tilingDisabled = YES;
/* First Step */
/* Resize Each Column to its Minimum Width */
table_width = _bounds.origin.x;
enumerator = [_tableColumns objectEnumerator];
while ((tb = [enumerator nextObject]) != nil)
{
// Compute min width of column
width = [[tb headerCell] cellSize].width;
cell = [tb dataCell];
for (row = 0; row < _numberOfRows; row++)
{
[cell setObjectValue: [_dataSource tableView: self
objectValueForTableColumn: tb
row: row]];
if (_del_responds)
{
[_delegate tableView: self willDisplayCell: cell
forTableColumn: tb row: row];
}
candidate_width = [cell cellSize].width;
if (_drawsGrid)
candidate_width += 4;
if (candidate_width > width)
{
width = candidate_width;
}
}
width += _intercellSpacing.width;
[tb setWidth: width];
/* It is necessary to ask the column for the width, since it might have
been changed by the column to constrain it to a min or max width */
table_width += [tb width];
}
/* Second Step */
/* If superview (clipview) is bigger than that, divide remaining space
between all columns */
if ((_super_view != nil) && (_numberOfColumns > 0))
{
float excess_width;
excess_width = NSMaxX ([self convertRect: [_super_view bounds]
fromView: _super_view]);
excess_width -= table_width;
/* Since we resized each column at its minimum width,
it's useless to try shrinking more: we can't */
if (excess_width <= 0)
{
_tilingDisabled = NO;
[self tile];
return;
}
excess_width = excess_width / _numberOfColumns;
enumerator = [_tableColumns objectEnumerator];
while ((tb = [enumerator nextObject]) != nil)
{
[tb setWidth: ([tb width] + excess_width)];
}
}
_tilingDisabled = NO;
[self tile];
}
- (void) noteNumberOfRowsChanged
{
NSRect superviewBounds; // Get this *after* [self setFrame:]
_numberOfRows = [_dataSource numberOfRowsInTableView: self];
[self setFrame: NSMakeRect (_frame.origin.x,
_frame.origin.y,
_frame.size.width,
(_numberOfRows * _rowHeight) + 1)];
/* If we are shorter in height than the enclosing clipview, we
should redraw us now. */
superviewBounds = [_super_view bounds];
if ((superviewBounds.origin.x <= _frame.origin.x)
&& (NSMaxY (superviewBounds) >= NSMaxY (_frame)))
{
[self setNeedsDisplay: YES];
}
}
- (void) tile
{
float table_width = 0;
float table_height;
if (_tilingDisabled == YES)
return;
if (_numberOfColumns > 0)
{
int i;
float width;
_columnOrigins[0] = _bounds.origin.x;
width = [[_tableColumns objectAtIndex: 0] width];
table_width += width;
for (i = 1; i < _numberOfColumns; i++)
{
_columnOrigins[i] = _columnOrigins[i - 1] + width;
width = [[_tableColumns objectAtIndex: i] width];
table_width += width;
}
}
/* + 1 for the last grid line */
table_height = (_numberOfRows * _rowHeight) + 1;
[self setFrameSize: NSMakeSize (table_width, table_height)];
[self setNeedsDisplay: YES];
if (_headerView != nil)
{
[_headerView setFrameSize:
NSMakeSize (_frame.size.width,
[_headerView frame].size.height)];
[_cornerView setFrameSize:
NSMakeSize ([NSScroller scrollerWidth] + 1,
[_headerView frame].size.height)];
[_headerView setNeedsDisplay: YES];
[_cornerView setNeedsDisplay: YES];
}
}
/*
* Drawing
*/
- (void)drawRow: (int)rowIndex clipRect: (NSRect)aRect
{
int startingColumn;
int endingColumn;
NSTableColumn *tb;
NSRect drawingRect;
NSCell *cell;
int i;
float x_pos;
if (_dataSource == nil)
return;
/* Using columnAtPoint: here would make it called twice per row per drawn
rect - so we avoid it and do it natively */
/* Determine starting column as fast as possible */
x_pos = NSMinX (aRect);
i = 0;
while ((x_pos > _columnOrigins[i]) && (i < _numberOfColumns))
{
i++;
}
startingColumn = (i - 1);
if (startingColumn == -1)
startingColumn = 0;
/* Determine ending column as fast as possible */
x_pos = NSMaxX (aRect);
// Nota Bene: we do *not* reset i
while ((x_pos > _columnOrigins[i]) && (i < _numberOfColumns))
{
i++;
}
endingColumn = (i - 1);
if (endingColumn == -1)
endingColumn = _numberOfColumns - 1;
/* Draw the row between startingColumn and endingColumn */
for (i = startingColumn; i <= endingColumn; i++)
{
if (i != _editedColumn || rowIndex != _editedRow)
{
tb = [_tableColumns objectAtIndex: i];
cell = [tb dataCell];
if (_del_responds)
{
[_delegate tableView: self willDisplayCell: cell
forTableColumn: tb row: rowIndex];
}
[cell setObjectValue: [_dataSource tableView: self
objectValueForTableColumn: tb
row: rowIndex]];
drawingRect = [self frameOfCellAtColumn: i
row: rowIndex];
[cell drawWithFrame: drawingRect inView: self];
}
}
}
- (void) drawGridInClipRect: (NSRect)aRect
{
float minX = NSMinX (aRect);
float maxX = NSMaxX (aRect);
float minY = NSMinY (aRect);
float maxY = NSMaxY (aRect);
/* Using columnAtPoint:, rowAtPoint: here calls them only twice
per drawn rect */
int startingRow = [self rowAtPoint:
NSMakePoint (_bounds.origin.x, minY)];
int endingRow = [self rowAtPoint:
NSMakePoint (_bounds.origin.x, maxY)];
int startingColumn = [self columnAtPoint:
NSMakePoint (minX, _bounds.origin.y)];
int endingColumn = [self columnAtPoint:
NSMakePoint (maxX, _bounds.origin.y)];
int i;
NSGraphicsContext *ctxt = GSCurrentContext ();
float position;
DPSgsave (ctxt);
DPSsetlinewidth (ctxt, 1);
[_gridColor set];
if (_numberOfRows > 0)
{
/* Draw horizontal lines */
if (startingRow == -1)
startingRow = 0;
if (endingRow == -1)
endingRow = _numberOfRows - 1;
position = _bounds.origin.y;
position += startingRow * _rowHeight;
for (i = startingRow; i <= endingRow + 1; i++)
{
DPSmoveto (ctxt, minX, position);
DPSlineto (ctxt, maxX, position);
DPSstroke (ctxt);
position += _rowHeight;
}
}
if (_numberOfColumns > 0)
{
/* Draw vertical lines */
if (startingColumn == -1)
startingColumn = 0;
if (endingColumn == -1)
endingColumn = _numberOfColumns - 1;
for (i = startingColumn; i <= endingColumn; i++)
{
DPSmoveto (ctxt, _columnOrigins[i], minY);
DPSlineto (ctxt, _columnOrigins[i], maxY);
DPSstroke (ctxt);
}
position = _columnOrigins[endingColumn];
position += [[_tableColumns objectAtIndex: endingColumn] width];
/* Last vertical line must moved a pixel to the left */
if (endingColumn == (_numberOfColumns - 1))
position -= 1;
DPSmoveto (ctxt, position, minY);
DPSlineto (ctxt, position, maxY);
DPSstroke (ctxt);
}
DPSgrestore (ctxt);
}
- (void) highlightSelectionInClipRect: (NSRect)clipRect
{
if (_selectingColumns == NO)
{
int selectedRowsCount;
int row;
int startingRow, endingRow;
selectedRowsCount = [_selectedRows count];
if (selectedRowsCount == 0)
return;
/* highlight selected rows */
startingRow = [self rowAtPoint: NSMakePoint (0, NSMinY (clipRect))];
endingRow = [self rowAtPoint: NSMakePoint (0, NSMaxY (clipRect))];
if (startingRow == -1)
startingRow = 0;
if (endingRow == -1)
endingRow = _numberOfRows - 1;
for (row = 0; row < selectedRowsCount; row++)
{
int rowNumber;
rowNumber = [[_selectedRows objectAtIndex: row] intValue];
if (rowNumber > endingRow)
break;
if (rowNumber >= startingRow)
{
NSHighlightRect ([self rectOfRow: rowNumber]);
}
}
}
else // Selecting columns
{
int selectedColumnsCount;
int column;
int startingColumn, endingColumn;
selectedColumnsCount = [_selectedColumns count];
if (selectedColumnsCount == 0)
return;
/* highlight selected columns */
startingColumn = [self columnAtPoint: NSMakePoint (NSMinX (clipRect),
0)];
endingColumn = [self columnAtPoint: NSMakePoint (NSMaxX (clipRect), 0)];
if (startingColumn == -1)
startingColumn = 0;
if (endingColumn == -1)
endingColumn = _numberOfColumns - 1;
for (column = 0; column < selectedColumnsCount; column++)
{
int columnNumber;
columnNumber = [[_selectedColumns objectAtIndex: column] intValue];
if (columnNumber > endingColumn)
break;
if (columnNumber >= startingColumn)
{
NSHighlightRect ([self rectOfColumn: columnNumber]);
}
}
}
}
- (void) drawRect: (NSRect)aRect
{
int startingRow;
int endingRow;
int i;
/* Draw background */
[_backgroundColor set];
NSRectFill (aRect);
if ((_numberOfRows == 0) || (_numberOfColumns == 0))
return;
/* Draw selection */
[self highlightSelectionInClipRect: aRect];
/* Draw grid */
if (_drawsGrid)
{
[self drawGridInClipRect: aRect];
}
/* Draw visible cells */
/* Using rowAtPoint: here calls them only twice per drawn rect */
startingRow = [self rowAtPoint: NSMakePoint (0, NSMinY (aRect))];
endingRow = [self rowAtPoint: NSMakePoint (0, NSMaxY (aRect))];
if (startingRow == -1)
startingRow = 0;
if (endingRow == -1)
endingRow = _numberOfRows - 1;
for (i = startingRow; i <= endingRow; i++)
{
[self drawRow: i clipRect: aRect];
}
}
- (BOOL) isOpaque
{
return YES;
}
/*
* Scrolling
*/
- (void) scrollRowToVisible: (int)rowIndex
{
if (_super_view != nil)
{
NSRect rowRect = [self rectOfRow: rowIndex];
NSRect visibleRect = [self convertRect: [_super_view bounds]
toView: self];
// If the row is over the top, or it is partially visible
// on top,
if ((rowRect.origin.y < visibleRect.origin.y))
{
// Then make it visible on top
NSPoint newOrigin;
newOrigin.x = visibleRect.origin.x;
newOrigin.y = rowRect.origin.y;
newOrigin = [self convertPoint: newOrigin toView: _super_view];
[(NSClipView *)_super_view scrollToPoint: newOrigin];
return;
}
// If the row is under the bottom, or it is partially visible on
// the bottom,
if (NSMaxY (rowRect) > NSMaxY (visibleRect))
{
// Then make it visible on bottom
NSPoint newOrigin;
newOrigin.x = visibleRect.origin.x;
newOrigin.y = visibleRect.origin.y;
newOrigin.y += NSMaxY (rowRect) - NSMaxY (visibleRect);
newOrigin = [self convertPoint: newOrigin toView: _super_view];
[(NSClipView *)_super_view scrollToPoint: newOrigin];
return;
}
}
}
- (void) scrollColumnToVisible: (int)columnIndex
{
if (_super_view != nil)
{
NSRect columnRect = [self rectOfColumn: columnIndex];
NSRect visibleRect = [self convertRect: [_super_view bounds]
toView: self];
float diff;
// If the row is out on the left, or it is partially visible
// on the left
if ((columnRect.origin.x < visibleRect.origin.x))
{
// Then make it visible on the left
NSPoint newOrigin;
newOrigin.x = columnRect.origin.x;
newOrigin.y = visibleRect.origin.y;
newOrigin = [self convertPoint: newOrigin toView: _super_view];
[(NSClipView *)_super_view scrollToPoint: newOrigin];
return;
}
diff = NSMaxX (columnRect) - NSMaxX (visibleRect);
// If the row is out on the right, or it is partially visible on
// the right,
if (diff > 0)
{
// Then make it visible on the right
NSPoint newOrigin;
newOrigin.x = visibleRect.origin.x;
newOrigin.y = visibleRect.origin.y;
newOrigin.x += diff;
newOrigin = [self convertPoint: newOrigin toView: _super_view];
[(NSClipView *)_super_view scrollToPoint: newOrigin];
return;
}
}
}
/*
* Text delegate methods
*/
- (void) textDidBeginEditing: (NSNotification *)aNotification
{
NSMutableDictionary *d;
d = [[NSMutableDictionary alloc] initWithDictionary:
[aNotification userInfo]];
[d setObject: [aNotification object] forKey: @"NSFieldEditor"];
[nc postNotificationName: NSControlTextDidBeginEditingNotification
object: self
userInfo: d];
}
- (void) textDidChange: (NSNotification *)aNotification
{
NSMutableDictionary *d;
// MacOS-X asks us to inform the cell if possible.
if ((_editedCell != nil) && [_editedCell respondsToSelector:
@selector(textDidChange:)])
[_editedCell textDidChange: aNotification];
d = [[NSMutableDictionary alloc] initWithDictionary:
[aNotification userInfo]];
[d setObject: [aNotification object] forKey: @"NSFieldEditor"];
[nc postNotificationName: NSControlTextDidChangeNotification
object: self
userInfo: d];
}
- (void) textDidEndEditing: (NSNotification *)aNotification
{
NSMutableDictionary *d;
id textMovement;
int row, column;
[self validateEditing];
d = [[NSMutableDictionary alloc] initWithDictionary:
[aNotification userInfo]];
[d setObject: [aNotification object] forKey: @"NSFieldEditor"];
[nc postNotificationName: NSControlTextDidEndEditingNotification
object: self
userInfo: d];
[_editedCell endEditing: [aNotification object]];
[self setNeedsDisplayInRect:
[self frameOfCellAtColumn: _editedColumn row: _editedRow]];
_textObject = nil;
_editedCell = nil;
RELEASE (_editedCell);
/* Save values */
row = _editedRow;
column = _editedColumn;
/* Only then Reset them */
_editedColumn = -1;
_editedRow = -1;
textMovement = [[aNotification userInfo] objectForKey: @"NSTextMovement"];
if (textMovement)
{
switch ([(NSNumber *)textMovement intValue])
{
case NSReturnTextMovement:
// Send action ?
break;
case NSTabTextMovement:
if([self _editNextEditableCellAfterRow: row column: column] == YES)
{
break;
}
[_window selectKeyViewFollowingView: self];
break;
case NSBacktabTextMovement:
if([self _editPreviousEditableCellBeforeRow: row column: column] == YES)
{
break;
}
[_window selectKeyViewPrecedingView: self];
break;
}
}
}
- (BOOL) textShouldBeginEditing: (NSText *)textObject
{
if (_delegate && [_delegate respondsToSelector:
@selector(control:textShouldBeginEditing:)])
return [_delegate control: self
textShouldBeginEditing: textObject];
else
return YES;
}
- (BOOL) textShouldEndEditing: (NSText *)aTextObject
{
if ([_delegate respondsToSelector:
@selector(control:textShouldEndEditing:)])
{
if ([_delegate control: self
textShouldEndEditing: aTextObject] == NO)
{
NSBeep ();
return NO;
}
return YES;
}
if ([_delegate respondsToSelector:
@selector(control:isValidObject:)] == YES)
{
NSFormatter *formatter;
id newObjectValue;
formatter = [_cell formatter];
if ([formatter getObjectValue: &newObjectValue
forString: [_textObject text]
errorDescription: NULL] == YES)
{
if ([_delegate control: self
isValidObject: newObjectValue] == NO)
return NO;
}
}
return [_editedCell isEntryAcceptable: [aTextObject text]];
}
/*
* Persistence
*/
- (NSString *) autosaveName
{
// TODO
return nil;
}
- (BOOL) autosaveTableColumns
{
// TODO
return NO;
}
- (void) setAutosaveName: (NSString *)name
{
// TODO
}
- (void) setAutosaveTableColumns: (BOOL)flag
{
// TODO
}
/*
* Delegate
*/
- (void) setDelegate: (id)anObject
{
SEL sel;
if (_delegate)
[nc removeObserver: _delegate name: nil object: self];
_delegate = anObject;
#define SET_DELEGATE_NOTIFICATION(notif_name) \
if ([_delegate respondsToSelector: @selector(tableView##notif_name:)]) \
[nc addObserver: _delegate \
selector: @selector(tableView##notif_name:) \
name: NSTableView##notif_name##Notification object: self]
SET_DELEGATE_NOTIFICATION(ColumnDidMove);
SET_DELEGATE_NOTIFICATION(ColumnDidResize);
SET_DELEGATE_NOTIFICATION(SelectionDidChange);
SET_DELEGATE_NOTIFICATION(SelectionIsChanging);
/* Cache */
sel = @selector(tableView:willDisplayCell:forTableColumn:row:);
_del_responds = [_delegate respondsToSelector: sel];
sel = @selector(tableView:setObjectValue:forTableColumn:row:);
_del_editable = [_delegate respondsToSelector: sel];
}
- (id) delegate
{
return _delegate;
}
/*
* Encoding/Decoding
*/
- (void) encodeWithCoder: (NSCoder*)aCoder
{
[super encodeWithCoder: aCoder];
// TODO
}
- (id) initWithCoder: (NSCoder*)aDecoder
{
return [super initWithCoder: aDecoder];
// TODO
}
- (void) _userResizedTableColumn: (int)index
leftWidth: (float)lwidth
rightWidth: (float)rwidth
{
_tilingDisabled = YES;
[[_tableColumns objectAtIndex: index] setWidth: lwidth];
[[_tableColumns objectAtIndex: index + 1] setWidth: rwidth];
_tilingDisabled = NO;
[self tile];
}
// Return YES on success; NO if no selectable cell found.
-(BOOL) _editNextEditableCellAfterRow: (int)row
column: (int)column
{
int i, j;
if (row > -1)
{
// First look for cells in the same row
for (j = column + 1; j < _numberOfColumns; j++)
{
if (_isCellEditable (_delegate, _tableColumns, self, row, j) == YES)
{
[self editColumn: j row: row withEvent: nil select: YES];
return YES;
}
}
}
// Otherwise, make the big cycle.
for (i = row + 1; i < _numberOfRows; i++)
{
for (j = 0; j < _numberOfColumns; j++)
{
if (_isCellEditable (_delegate, _tableColumns, self, row, i) == YES)
{
[self editColumn: j row: i withEvent: nil select: YES];
return YES;
}
}
}
return NO;
}
-(BOOL) _editPreviousEditableCellBeforeRow: (int)row
column: (int)column
{
int i,j;
if (row < _numberOfColumns)
{
// First look for cells in the same row
for (j = column - 1; j > -1; j--)
{
if (_isCellEditable (_delegate, _tableColumns, self, row, j) == YES)
{
[self editColumn: j row: row withEvent: nil select: YES];
return YES;
}
}
}
// Otherwise, make the big cycle.
for (i = row - 1; i > -1; i--)
{
for (j = _numberOfColumns - 1; j > -1; j--)
{
if (_isCellEditable (_delegate, _tableColumns, self, i, j) == YES)
{
[self editColumn: j row: i withEvent: nil select: YES];
return YES;
}
}
}
return NO;
}
@end /* implementation of NSTableView */
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