/* NSBrowser.m Control to display and access hierarchal data Copyright (C) 1999 Free Software Foundation, Inc. Author: Felipe A. Rodriguez Date: March 1999 This file is part of the mySTEP Library and is provided under the terms of the GNU Library General Public License. */ #import #import #import #import #import #import #import #import #import #import #import #import "NSAppKitPrivate.h" #define COLUMN_SEP 6 #define BORDER_WIDTH 4 // border width assumes bezeled #define VISIBLE_COUNT (_firstVisibleColumn + _numberOfVisibleColumns) #define LAST_VISIBLE_COLUMN (VISIBLE_COUNT - 1) #define COLUMN_IS_VISIBLE(c) ((c >= _firstVisibleColumn) && c < VISIBLE_COUNT) @implementation NSBrowser + (Class) cellClass { return [NSBrowserCell class]; } - (id) initWithFrame:(NSRect)rect { float sw = [NSScroller scrollerWidth]; if((self=[super initWithFrame: rect])) { [self setCell:[[NSTextFieldCell new] autorelease]]; // (re)define title cell // [_cell setTextColor: [NSColor whiteColor]]; // [_cell setBackgroundColor: [NSColor darkGrayColor]]; // alignment [self setCellPrototype:[[[[self class] cellClass] new] autorelease]]; _matrixClass = [NSMatrix class]; _pathSeparator = @"/"; _br.allowsBranchSelection = YES; _br.allowsEmptySelection = YES; _br.allowsMultipleSelection = YES; _br.separatesColumns = YES; _br.titleFromPrevious = YES; _br.isTitled = YES; _br.hasHorizontalScroller = YES; _br.acceptArrowKeys = YES; _br.sendActionOnArrowKeys = YES; _br.reuseColumns = YES; _minColumnWidth = (sw + BORDER_WIDTH); _scroller = [[NSScroller alloc] initWithFrame: (NSRect){{0,0},{NSWidth(_frame),sw}}]; [_scroller setTarget: self]; [_scroller setAction: @selector(scrollViaScroller:)]; [_scroller setAutoresizingMask: NSViewWidthSizable]; [self addSubview: _scroller]; _titles = [NSMutableArray new]; _columns = [NSMutableArray new]; _unusedColumns = [NSMutableArray new]; [self setMaxVisibleColumns:1]; // default } return self; } - (void) dealloc { [_cellPrototype release]; [_pathSeparator release]; [_scroller release]; [_columns release]; [super dealloc]; } - (BOOL) sendAction { NSLog(@"NSBrowser sendAction %@ to %@", NSStringFromSelector([self action]), [self target]); return [self sendAction:[self action] to:[self target]]; } - (SEL) doubleAction { return _doubleAction; } - (id) cellPrototype { return _cellPrototype; } - (Class) matrixClass { return _matrixClass; } - (NSString*) pathSeparator { return _pathSeparator; } - (int) numberOfVisibleColumns { return _numberOfVisibleColumns; } - (int) lastVisibleColumn { return LAST_VISIBLE_COLUMN; } - (float) minColumnWidth { return _minColumnWidth; } - (int) firstVisibleColumn { return _firstVisibleColumn; } - (int) maxVisibleColumns { return _maxVisibleColumns; } - (BOOL) isTitled { return _br.isTitled; } - (BOOL) separatesColumns { return _br.separatesColumns; } - (BOOL) isLoaded { return _isLoaded; } - (BOOL) reusesColumns { return _br.reuseColumns; } - (BOOL) takesTitleFromPreviousColumn { return _br.titleFromPrevious; } - (BOOL) allowsBranchSelection { return _br.allowsBranchSelection; } - (BOOL) allowsEmptySelection { return _br.allowsEmptySelection; } - (BOOL) allowsMultipleSelection { return _br.allowsMultipleSelection; } - (BOOL) sendsActionOnArrowKeys { return _br.sendActionOnArrowKeys; } - (BOOL) acceptsArrowKeys { return _br.acceptArrowKeys; } - (BOOL) hasHorizontalScroller { return _br.hasHorizontalScroller; } - (void) setAcceptsArrowKeys:(BOOL)flag { _br.acceptArrowKeys = flag; } - (void) setPathSeparator:(NSString *)a { ASSIGN(_pathSeparator, a); } - (void) setReusesColumns:(BOOL)flag { _br.reuseColumns = flag; } - (void) setCellPrototype:(NSCell *)c { ASSIGN(_cellPrototype, c); } - (void) setMatrixClass:(Class)classId { _matrixClass = classId; } - (void) setDoubleAction:(SEL)aSelector { _doubleAction = aSelector; } - (void) setCellClass:(Class)classId { [self setCellPrototype: [[[classId alloc] init] autorelease]]; } - (void) setTakesTitleFromPreviousColumn:(BOOL)flag { _br.titleFromPrevious = flag; } - (void) setAllowsEmptySelection:(BOOL)flag { _br.allowsEmptySelection = flag; } - (void) setAllowsBranchSelection:(BOOL)flag { _br.allowsBranchSelection = flag; } - (void) setAllowsMultipleSelection:(BOOL)flag { _br.allowsMultipleSelection = flag; } - (void) setSendsActionOnArrowKeys:(BOOL)flag { _br.sendActionOnArrowKeys = flag; } - (void) setHasHorizontalScroller:(BOOL)flag { if (_br.hasHorizontalScroller != flag) { if (!(_br.hasHorizontalScroller = flag)) { [_scroller retain]; [_scroller removeFromSuperview]; } [self tile]; } } - (void) setSeparatesColumns:(BOOL)flag { if (_br.separatesColumns != flag) { _br.separatesColumns = flag; [self tile]; } } - (void) setTitled:(BOOL)flag { _br.isTitled = flag; [self tile]; } - (void) _updateScrollView:(NSScrollView *)sc { id matrix = [sc documentView]; // Adjust matrix to fit in if (sc && matrix) // scrollview do so only if { // column has been loaded NSSize ms = [matrix cellSize]; NSSize cs = [sc contentSize]; if(ms.width != cs.width) { ms.width = cs.width; [matrix setCellSize: ms]; [matrix sizeToCells]; } } } - (void) _updateColumnFrames { int count = [_columns count]; while (count-- > 0) { NSScrollView *sc = [_columns objectAtIndex: count]; if (COLUMN_IS_VISIBLE(count)) { if (![sc superview]) // Add as subview if necessary [self addSubview: sc]; [sc setFrame: [self frameOfInsideOfColumn: count]]; [sc setNeedsDisplay:YES]; [self _updateScrollView: sc]; } else { // If it is not visible remove if ([sc superview]) // it from it's superview [[sc retain] removeFromSuperview]; } } } - (float) titleHeight { // return [_cell cellSize].height; return 24; } - (int) lastColumn { int i, count = [_columns count]; // Find the last loaded column // A column is loaded if it has for (i = 0; i < count; ++i) // a doc view matrix. if (![[_columns objectAtIndex: i] documentView]) break; return MAX(0, i-1); } - (int) columnOfMatrix:(NSMatrix *)matrix { // Find the column that has int i, count = [_columns count]; // matrix as it's doc view for (i = 0; i < count; ++i) if (matrix == [[_columns objectAtIndex: i] documentView]) return i; return NSNotFound; } - (int) selectedColumn { int i = [_columns count] - 1; for (;(i >= 0); i--) if ([[[_columns objectAtIndex:i] documentView] selectedCell]) return i; return NSNotFound; } - (void) setMaxVisibleColumns:(int)columnCount { int i = [_columns count]; _maxVisibleColumns = columnCount; if(i > _maxVisibleColumns) NSLog(@"can't reduce numberOfVisibleColumns yet"); // FIX ME reduce numberOfVisible if > new max while(i++ < _maxVisibleColumns) // Create additional columns if necessary [self addColumn]; [self tile]; } - (void) setMinColumnWidth:(float)columnWidth { float sw = [NSScroller scrollerWidth]; float bw = 4; // assume bezeled border width if (_br.separatesColumns) // Take the border into account sw += bw; // width min = scroller+border _minColumnWidth = (columnWidth < sw) ? (int)sw : columnWidth; [self tile]; } - (void) addColumn { int c = [_columns count]; NSScrollView *sc; sc = [[NSScrollView alloc] initWithFrame: [self frameOfInsideOfColumn: c]]; [sc setHasHorizontalScroller: NO]; [sc setHasVerticalScroller: YES]; [self addSubview: sc]; [_columns addObject: sc]; [_titles addObject: @""]; } - (void) displayAllColumns { int i, count = [_columns count]; for (i = 0; i < count; ++i) [self setNeedsDisplayInRect: [self frameOfInsideOfColumn:i]]; if(_br.isTitled) for (i = 0; i < count; ++i) [self setNeedsDisplayInRect: [self titleFrameOfColumn: i]]; } - (void) displayColumn:(int)column // FIX ME should display col not { // just the title if (!(COLUMN_IS_VISIBLE(column))) return; if([[_columns objectAtIndex: column] documentView]) { // Ask the delegate for the column title if([_delegate respondsToSelector:@selector(browser:titleOfColumn:)]) [self setTitle: [_delegate browser: self titleOfColumn: column] ofColumn: column]; else { // Check if we take title from previous column if (_br.titleFromPrevious) { // If first column then use the path separator if (column == 0) [self setTitle: _pathSeparator ofColumn: 0]; else // Get the selected cell. Use its string value { // as the title Only if it is not a leaf id c = [self selectedCellInColumn: column - 1]; if ([c isLeaf] || ![c stringValue]) [self setTitle: @"" ofColumn: column]; else [self setTitle: [c stringValue] ofColumn: column]; } } else [self setTitle: @"" ofColumn: column]; } } [self drawTitle: [_titles objectAtIndex: column] // Draw the title inRect: [self titleFrameOfColumn: column] ofColumn: column]; } - (void) loadColumnZero { [self reloadColumn: 0]; [self setLastColumn: 0]; // set the last column loaded _isLoaded = YES; [self tile]; } - (void) reloadColumn:(int)column { // Make sure the column exists int i, rows = 0, cols = 0; NSMatrix *m = nil; NSScrollView *sc; #if 1 NSLog(@"reloadColumn:%d", column); #endif if (column >= (int)[_columns count]) return; sc = [_columns objectAtIndex: column]; if (!_br.delegateCreatesRowsInMatrix) { rows = [_delegate browser:self numberOfRowsInColumn:column]; cols = 1; } if (_br.reuseColumns) if (!(m = [sc documentView]) && [_unusedColumns count]) { [sc setDocumentView: (m = [_unusedColumns objectAtIndex: 0])]; [_unusedColumns removeObjectAtIndex: 0]; } if (!m) { // create a new column matrix unsigned int mode = _br.allowsMultipleSelection ? NSListModeMatrix : NSRadioModeMatrix; m = [[_matrixClass alloc] initWithFrame: (NSRect){{0,0},{100,100}} mode: mode prototype: _cellPrototype numberOfRows: rows numberOfColumns: cols]; [m setAllowsEmptySelection: _br.allowsEmptySelection]; [m setTarget: self]; [m setAction: @selector(doClick:)]; [m setDoubleAction: @selector(doDoubleClick:)]; [sc setDocumentView: m]; [m release]; // should have been retained by setDocumentView } else [m renewRows:rows columns: 1]; if (!_br.delegateCreatesRowsInMatrix) // Load from passive delegate { for (i = 0; i < rows; ++i) // loop thru cells loading each [self loadedCellAtRow: i column: column]; } // Load from active delegate else // Ask delegate to create rows [_delegate browser:self createRowsForColumn:column inMatrix:m]; [self _updateScrollView: sc]; [self setNeedsDisplayInRect: [self frameOfInsideOfColumn:column]]; } - (void) selectAll:(id)sender { if (_br.allowsMultipleSelection) [[self matrixInColumn: [self lastVisibleColumn]] selectAll: sender]; } - (void) setLastColumn:(int)column { #if 1 NSLog(@"NSBrowser setLastColumn: %d count: %d \n", column, [_columns count]); #endif if (column >= (int)[_columns count]) return; if (([[_columns objectAtIndex: column] documentView])) { int i, count = [_columns count]; for (i = (column + 1); i < count; ++i) { NSScrollView *s = [_columns objectAtIndex: i]; if ([s documentView]) { if (_br.reuseColumns) [_unusedColumns addObject: [s documentView]]; [s setDocumentView: nil]; [self setTitle: @"" ofColumn: i]; [self setNeedsDisplayInRect: [self frameOfInsideOfColumn: i]]; } } if (!(COLUMN_IS_VISIBLE(column))) [self scrollColumnToVisible: column]; [self updateScroller]; } } - (void) validateVisibleColumns { int i; // xxx Should we trigger an exception? if (![_delegate respondsToSelector:@selector(browser:isColumnValid:)]) return; // Loop through the visible columns for (i = _firstVisibleColumn; i <= LAST_VISIBLE_COLUMN; ++i) { BOOL v = [_delegate browser: self isColumnValid: i]; // Ask delegate if the column is valid if (!v) // and if not then reload the column [self reloadColumn: i]; } } - (void) drawTitle:(NSString *)title inRect:(NSRect)aRect ofColumn:(int)column { if (_br.isTitled && COLUMN_IS_VISIBLE(column)) { [_cell setStringValue: title]; [_cell drawWithFrame: aRect inView: self]; } } - (void) setTitle:(NSString *)aString ofColumn:(int)column { if (column < [_titles count]) [_titles replaceObjectAtIndex:column withObject:aString]; // fixme: this ends up in -displayIfNeeded recursion if (COLUMN_IS_VISIBLE(column)) [self setNeedsDisplayInRect: [self titleFrameOfColumn: column]]; } - (NSRect) titleFrameOfColumn:(int)column { float titleHeight = [self titleHeight]; NSRect r; int n; if (!_br.isTitled) // Not titled then no frame return NSZeroRect; // Number of columns over n = column - _firstVisibleColumn; // from the first r.origin.x = (n * _columnSize.width) + 2; // Calculate the frame r.origin.y = _frame.size.height - titleHeight + 2; r.size.width = _columnSize.width - 4; r.size.height = titleHeight - 4; if (_br.separatesColumns) r.origin.x += n * COLUMN_SEP; return r; } - (NSString*) titleOfColumn:(int)column { return [_titles objectAtIndex: column]; } - (void) scrollColumnsLeftBy:(int)shiftAmount { // Cannot shift past the if ((_firstVisibleColumn - shiftAmount) < 0) // zero column shiftAmount = _firstVisibleColumn; if (shiftAmount <= 0) return; if ([_delegate respondsToSelector: @selector(browserWillScroll:)]) [_delegate browserWillScroll: self]; // Notify the delegate _firstVisibleColumn = _firstVisibleColumn - shiftAmount; [self _updateColumnFrames]; // Update scrollviews [self updateScroller]; // Update the scroller if ([_delegate respondsToSelector: @selector(browserDidScroll:)]) [_delegate browserDidScroll: self]; // Notify the delegate [self displayAllColumns]; } - (void) scrollColumnsRightBy:(int)shiftAmount { int lastColumnLoaded = [self lastColumn]; // Cannot shift past the // last loaded column if ((shiftAmount + LAST_VISIBLE_COLUMN) > lastColumnLoaded) shiftAmount = lastColumnLoaded - LAST_VISIBLE_COLUMN; if (shiftAmount <= 0) return; if ([_delegate respondsToSelector: @selector(browserWillScroll:)]) [_delegate browserWillScroll: self]; // Notify the delegate _firstVisibleColumn = _firstVisibleColumn + shiftAmount; [self _updateColumnFrames]; // Update scrollviews [self updateScroller]; // Update the scroller if ([_delegate respondsToSelector: @selector(browserDidScroll:)]) [_delegate browserDidScroll: self]; // Notify the delegate [self displayAllColumns]; } - (void) scrollColumnToVisible:(int)column { int i; // If col is last visible or number // of visible columns is greater if (LAST_VISIBLE_COLUMN == column) // than number loaded do nothing return; if (_firstVisibleColumn ==0 && [self lastColumn] < _numberOfVisibleColumns) return; if ((i = LAST_VISIBLE_COLUMN - column) > 0) [self scrollColumnsLeftBy: i]; else [self scrollColumnsRightBy: (-i)]; } - (void) scrollViaScroller:(NSScroller *)sender { if(sender) { NSScrollerPart h = [sender hitPart]; if ((h == NSScrollerDecrementLine) || (h == NSScrollerDecrementPage)) [self scrollColumnsLeftBy: 1]; // Scroll to the left else if ((h == NSScrollerIncrementLine) || (h == NSScrollerIncrementPage)) [self scrollColumnsRightBy: 1]; // Scroll to the right else if ((h == NSScrollerKnob) || (h == NSScrollerKnobSlot)) { int i = rint([sender floatValue] * [self lastColumn]); [self scrollColumnToVisible: i]; } } } - (void) updateScroller // If there are not enough columns to scroll { // with then the column must be visible int lastColumnLoaded = [self lastColumn]; if((lastColumnLoaded == 0) || (lastColumnLoaded < _numberOfVisibleColumns)) { // disable horiz scroller only if if(_firstVisibleColumn == 0) // browser's first col is visible [_scroller setEnabled: NO]; } else { float p = (float)((float)_numberOfVisibleColumns / (float)(lastColumnLoaded + 1)); float i = (lastColumnLoaded + 1) - _numberOfVisibleColumns; float f = 1 + ((LAST_VISIBLE_COLUMN - lastColumnLoaded) / i); [_scroller setFloatValue: f knobProportion: p]; [_scroller setEnabled: YES]; } return; } - (void) doClick:(id)sender // handle a single click in a cell { int column = [self columnOfMatrix: sender]; BOOL shouldSelect = YES; NSArray *a; // If the matrix isn't ours then if (column == NSNotFound) // just return return; if (_br.delegateSelectsCellsByRow) // Ask delegate if selection is ok { shouldSelect = [_delegate browser: self selectRow: [sender selectedRow] inColumn: column]; } else if (_br.delegateSelectsCellsByString) // Try the other method { id a = [[sender selectedCell] stringValue]; shouldSelect = [_delegate browser:self selectCellWithString:a inColumn: column]; } if (!shouldSelect) // If we should not select cell { // deselect it and return [sender deselectSelectedCell]; return; } a = [sender selectedCells]; if ([a count] == 1) // If only one cell is selected { id c = [a objectAtIndex: 0]; // If the cell is a leaf then if ([c isLeaf]) // unload the columns after [self setLastColumn: column]; else // The cell is not a leaf so we { // need to load a column. If int next = column + 1; // last column then add a col if (column == (int)([_columns count] - 1)) [self addColumn]; // Load column [self reloadColumn: next]; // If this column is the last if (column == LAST_VISIBLE_COLUMN) // visible column then scroll [self scrollColumnsRightBy: 1]; // right by one column else { [self setLastColumn: next]; [self setNeedsDisplayInRect:[self titleFrameOfColumn: next]]; } } } else // If multiple selection then [self setLastColumn: column]; // we unload the columns after [self sendAction]; // Send action to the target } - (void) doDoubleClick:(id)sender // Already handled the single { // click so send double action [self sendAction: _doubleAction to: [self target]]; } - (id) loadedCellAtRow:(int)row column:(int)column // FIX ME wrong { id c = nil; if (column < [_columns count]) // col range check { id matrix = [[_columns objectAtIndex: column] documentView]; NSArray *columnCells = [matrix cells]; if (row >= [columnCells count]) // row range check return nil; c = [matrix cellAtRow: row column: 0]; // Get the cell if (![c isLoaded]) // Load if not yet { // loaded [_delegate browser:self willDisplayCell:c atRow:row column:column]; [c setLoaded: YES]; } } return c; } - (NSMatrix*) matrixInColumn:(int)column { return [[_columns objectAtIndex: column] documentView]; } - (id) selectedCell { int i = [self selectedColumn]; return (i == NSNotFound) ? nil : [[self matrixInColumn: i] selectedCell]; } - (id) selectedCellInColumn:(int)column { return [[self matrixInColumn: column] selectedCell]; } - (void) selectRow:(int)row inColumn:(int)column; { // CHECKME: are we really the same as a doClick or does doClick use us for all work besides sendAction? [self doClick:[[self matrixInColumn: column] cellAtRow:row column:0]]; } - (int) selectedRowInColumn:(int)column { return [[self matrixInColumn: column] selectedRow]; } - (NSArray*) selectedCells { int i = [self selectedColumn]; return (i == NSNotFound) ? nil : [[self matrixInColumn: i] selectedCells]; } - (NSRect) frameOfColumn:(int)column { // Number of columns over int n = column - _firstVisibleColumn; // from the first NSRect r = {{n * _columnSize.width, 0}, _columnSize}; if (_br.separatesColumns) r.origin.x += n * COLUMN_SEP; // Adjust for horizontal if (_br.hasHorizontalScroller) // scroller r.origin.y = [NSScroller scrollerWidth] + 4; return r; } - (NSRect) frameOfInsideOfColumn:(int)column { NSRect r = [self frameOfColumn: column]; return NSInsetRect(r, 2, 2); } - (BOOL) setPath:(NSString *)path { NSArray *subStrings = [path componentsSeparatedByString:_pathSeparator]; int numberOfSubStrings, i, count = [_columns count] - 1; #if 1 NSLog(@"NSBrowser setPath:%@ -> %@", path, subStrings); #endif if(!path) return NO; // this assumes that the delegate's data has not changed! if(_isLoaded) { [self setLastColumn: 0]; [self scrollColumnsLeftBy: count + 1]; } else [self loadColumnZero]; numberOfSubStrings = [subStrings count]; if((numberOfSubStrings == 1) && [(NSString *)[subStrings objectAtIndex:0] length] == 0) return YES; // optimized root path sel for(i = 1; i < numberOfSubStrings; i++) // cycle thru str's array { // created from path NSMatrix *matrix = [[_columns objectAtIndex: i-1] documentView]; NSArray *cells = [matrix cells]; int j, k, numOfRows, numOfCols; NSBrowserCell *selectedCell, *matchingCell = nil; NSString *a = [subStrings objectAtIndex:i]; [matrix getNumberOfRows:&numOfRows columns:&numOfCols]; for (j = 0; j < numOfRows; j++) // find the cell in the for (k = 0; k < numOfCols; k++) // browser matrix with { // title equal to "a" selectedCell = [cells objectAtIndex:((j * numOfCols) + k)]; if([[selectedCell stringValue] isEqualToString: a]) { int r, c; k = numOfCols; j = numOfRows; if([matrix getRow:&r column:&c ofCell:selectedCell]) { [matrix selectCellAtRow:r column:c]; matchingCell = selectedCell; } } } // if unable to find a cell if(!matchingCell) // whose title matches "a" { // return NO NSLog(@"NSBrowser: unable to find cell in matrix\n"); return NO; } // if the cell is not a if(![matchingCell isLeaf]) // leaf add a column to the { // browser for it if(i > count) [self addColumn]; [self reloadColumn: i]; // Load the column [self scrollColumnsRightBy: 1]; // scroll right by one col } else // the cell is a leaf so we break; // break out } #if 0 NSLog(@"setPath done"); #endif return YES; } - (NSString*) path { return [self pathToColumn: [_columns count]]; } - (NSString*) pathToColumn:(int)column { NSMutableString *s = [_pathSeparator mutableCopy]; int i, lastColumnLoaded = [self lastColumn]; id c; if (column > lastColumnLoaded) column = lastColumnLoaded + 1; // limit to loaded columns for (i = 0; i < column && (c = [self selectedCellInColumn: i]); i++) { if(i > 0) [s appendString: _pathSeparator]; [s appendString: [c stringValue]]; } return (NSString*)[s autorelease]; } - (void) setFrame:(NSRect)frameRect { NSDebugLog (@"NSBrowser setFrame"); [super setFrame:frameRect]; [self tile]; // recalc browser's elements } - (void) setFrameSize:(NSSize)newSize { NSDebugLog (@"NSBrowser setFrameSize:"); [super setFrameSize:newSize]; [self tile]; // recalc browser's elements } - (void) resizeSubviewsWithOldSize:(NSSize)oldSize { NSDebugLog (@"NSBrowser resizeSubviewsWithOldSize:"); [super resizeSubviewsWithOldSize:oldSize]; // required to resize the horizontal scroller [self tile]; // recalc browser's elements } - (void) viewDidMoveToWindow { NSDebugLog (@"NSBrowser viewDidMoveToWindow"); [self tile]; // recalc browser's elements } - (void) viewDidMoveToSuperview { NSDebugLog (@"NSBrowser viewDidMoveToSuperview"); [self tile]; // recalc browser's elements } - (void) tile // assume that frame and bounds { // have been set appropriately int columnsPossible = (int)(NSWidth(_frame) / (_minColumnWidth + COLUMN_SEP)); int currentVisibleColumns = _numberOfVisibleColumns; #if 1 NSLog (@"NSBrowser tile"); #endif _numberOfVisibleColumns = MIN(_maxVisibleColumns, columnsPossible); if (_br.separatesColumns) _columnSize.width = ((NSWidth(_frame) - ((_numberOfVisibleColumns - 1) * COLUMN_SEP)) / _numberOfVisibleColumns); else _columnSize.width = NSWidth(_frame) / (float)_numberOfVisibleColumns; _columnSize.width = ceilf(_columnSize.width); _columnSize.height = _frame.size.height; if (_br.hasHorizontalScroller) // Horizontal scroller _columnSize.height -= ([NSScroller scrollerWidth] + 4); if (_br.isTitled) // Adjust for Title _columnSize.height -= [self titleHeight]; if (_columnSize.height < 0) _columnSize.height = 0; if(currentVisibleColumns != _numberOfVisibleColumns) { if(_numberOfVisibleColumns > currentVisibleColumns) { if(_firstVisibleColumn > 0) { int c = _numberOfVisibleColumns - currentVisibleColumns; int d = MAX([_columns count] - currentVisibleColumns, 1); [self scrollColumnsLeftBy: MIN(d, c)]; } else [_scroller setEnabled: NO]; } else { int c = currentVisibleColumns - _numberOfVisibleColumns; if ([_columns count] > _numberOfVisibleColumns) [self scrollColumnsRightBy: c]; } } [self _updateColumnFrames]; } - (void) drawRect:(NSRect)rect { int i; if (!_isLoaded) // Load the first column if not already { // loaded [self loadColumnZero]; [self displayColumn: 0]; [self displayAllColumns]; } // Loop through the visible columns for (i = _firstVisibleColumn; i <= LAST_VISIBLE_COLUMN; ++i) { NSRect r = NSIntersectionRect([self titleFrameOfColumn: i], rect); if (! NSIsEmptyRect(r)) // If the column title intersects with [self displayColumn: i]; // the rect to be drawn then draw that } // column } - (void) mouseDown:(NSEvent*)event { return; } // ignore events for the browser frame - (void) drawCell:(NSCell *)aCell { NIMP; } // override NSControl's - (void) drawCellInside:(NSCell *)aCell { NIMP; } // defaults - (void) selectCell:(NSCell *)aCell { NIMP; } // - (void) updateCell:(NSCell *)aCell { NIMP; } - (void) updateCellInside:(NSCell *)aCell { NIMP; } - (id) delegate { return _delegate; } - (void) setDelegate:(id)anObject { // you can't set the delegate to nil! SEL s = @selector(browser:willDisplayCell:atRow:column:); SEL a = @selector(browser:createRowsForColumn:inMatrix:); SEL n = @selector(browser:numberOfRowsInColumn:); if ([anObject respondsToSelector:n]) { _br.delegateCreatesRowsInMatrix = NO; // Passive delegate if ([anObject respondsToSelector: a]) [NSException raise: NSBrowserIllegalDelegateException format: @"Delegate %@ responds to both %@ and %@", anObject, NSStringFromSelector(a), NSStringFromSelector(n)]; } else { _br.delegateCreatesRowsInMatrix = YES; // Active delegate if (![anObject respondsToSelector: a]) [NSException raise: NSBrowserIllegalDelegateException format: @"Delegate %@ does not respond to %@ or %@", anObject, NSStringFromSelector(a), NSStringFromSelector(n)]; } if ([anObject respondsToSelector: s]) _br.delegateImplementsWillDisplayCell = YES; else if (!_br.delegateCreatesRowsInMatrix) [NSException raise: NSBrowserIllegalDelegateException format: @"Passive delegate %@ must respond to %@", anObject, NSStringFromSelector(n)]; s = @selector(browser:selectRow:inColumn:); _br.delegateSelectsCellsByRow = ([anObject respondsToSelector: s]); s = @selector(browser:selectCellWithString:inColumn:); _br.delegateSelectsCellsByString = ([anObject respondsToSelector: s]); s = @selector(browser:titleOfColumn:); _br.delegateSetsTitles = ([anObject respondsToSelector: s]); [super setDelegate:anObject]; // NSControl's private method #if 0 // this causes trouble if awakeFromNib wants to set a subclass for cellPrototype! // we might better set up some 'needs reload' flag which triggers a loadColumnZero in drawRect: if(_isLoaded) { // reload column zero if delegate has changed [self loadColumnZero]; } #endif } - (void) encodeWithCoder:(NSCoder *)aCoder // NSCoding protocol { [super encodeWithCoder:aCoder]; } - (id) initWithCoder:(NSCoder *)coder { self=[super initWithCoder:coder]; if([coder allowsKeyedCoding]) { int brFlags=[coder decodeInt32ForKey:@"NSBrFlags"]; [self setCell:[[NSTextFieldCell new] autorelease]]; // (re)define title cell // FIXME: should be decoded from the bits of brFlags _br.allowsBranchSelection = YES; _br.allowsEmptySelection = YES; _br.allowsMultipleSelection = YES; _br.separatesColumns = YES; _br.titleFromPrevious = YES; _br.isTitled = NO; _br.hasHorizontalScroller = YES; _br.acceptArrowKeys = YES; _br.sendActionOnArrowKeys = YES; _br.reuseColumns = YES; _numberOfVisibleColumns=[coder decodeIntForKey:@"NSNumberOfVisibleColumns"]; _columnResizing=[coder decodeIntForKey:@"NSColumnResizingType"]; _minColumnWidth=[coder decodeIntForKey:@"NSMinColumnWidth"]; _preferedColumnWidth=[coder decodeFloatForKey:@"NSPreferedColumnWidth"]; _pathSeparator=[[coder decodeObjectForKey:@"NSPathSeparator"] retain]; _cellPrototype=[[coder decodeObjectForKey:@"NSCellPrototype"] retain]; /* ?? */ [coder decodeObjectForKey:@"NSAllowsTypeSelect"]; if([coder containsValueForKey:@"NSDelegate"]) [self setDelegate:[coder decodeObjectForKey:@"NSDelegate"]]; if([coder containsValueForKey:@"NSFirstColumnTitle"]) [self setTitle:[coder decodeObjectForKey:@"NSFirstColumnTitle"] ofColumn:0]; // other init _matrixClass = [NSMatrix class]; _scroller = [[NSScroller alloc] initWithFrame:(NSRect){{0,0},{NSWidth(_frame),[NSScroller scrollerWidth]}}]; [_scroller setTarget:self]; [_scroller setAction:@selector(scrollViaScroller:)]; [_scroller setAutoresizingMask:NSViewWidthSizable]; [self addSubview:_scroller]; _titles = [NSMutableArray new]; _columns = [NSMutableArray new]; _unusedColumns = [NSMutableArray new]; [self tile]; [self setMaxVisibleColumns:[coder decodeIntForKey:@"NSMaxNumberOfVisibleColumns"]]; // create columns as needed return self; } return self; } @end /* NSBrowser */