LET'S GET THIS FINAL REWRITE EVER STARTED

1 files changed, 195 insertions, 0 deletions

diff --git a/prev/table_darwin.m b/prev/table_darwin.m
new file mode 100644
index 0000000..f04aae8
--- /dev/null
+++ b/prev/table_darwin.m
@@ -0,0 +1,195 @@
+// 29 july 2014
+
+#import "objc_darwin.h"
+#import "_cgo_export.h"
+#import <Cocoa/Cocoa.h>
+
+#define toNSTableView(x) ((NSTableView *) (x))
+
+// NSTableColumn provides no provision to store an integer data
+// it does provide an identifier tag, but that's a NSString, and I'd rather not risk the conversion overhead
+@interface goTableColumn : NSTableColumn {
+@public
+	intptr_t gocolnum;
+}
+@end
+
+@implementation goTableColumn
+@end
+
+@interface goTableDataSource : NSObject <NSTableViewDataSource, NSTableViewDelegate> {
+@public
+	void *gotable;
+}
+@end
+
+@implementation goTableDataSource
+
+- (NSInteger)numberOfRowsInTableView:(NSTableView *)view
+{
+	return (NSInteger) goTableDataSource_getRowCount(self->gotable);
+}
+
+- (id)tableView:(NSTableView *)view objectValueForTableColumn:(NSTableColumn *)col row:(NSInteger)row
+{
+	void *ret;
+	NSString *s;
+	intptr_t colnum;
+	char *str;
+	int type = colTypeText;
+
+	colnum = ((goTableColumn *) col)->gocolnum;
+	ret = goTableDataSource_getValue(self->gotable, (intptr_t) row, colnum, &type);
+	switch (type) {
+	case colTypeImage:
+		// TODO free the returned image when done somehow
+		return (id) ret;
+	case colTypeCheckbox:
+		if (ret == NULL)
+			return nil;
+		return (id) [NSNumber numberWithInt:1];
+	}
+	str = (char *) ret;
+	s = [NSString stringWithUTF8String:str];
+	free(str);		// allocated with C.CString() on the Go side
+	return (id) s;
+}
+
+- (void)tableView:(NSTableView *)view setObjectValue:(id)value forTableColumn:(NSTableColumn *)col row:(NSInteger)row
+{
+	intptr_t colnum;
+	NSNumber *number = (NSNumber *) value;	// thanks to mikeash in irc.freenode.net/#macdev
+
+	colnum = ((goTableColumn *) col)->gocolnum;
+	goTableDataSource_toggled(self->gotable, (intptr_t) row, colnum, [number boolValue]);
+}
+
+- (void)tableViewSelectionDidChange:(NSNotification *)note
+{
+	tableSelectionChanged(self->gotable);
+}
+
+@end
+
+id newTable(void)
+{
+	NSTableView *t;
+
+	t = [[NSTableView alloc] initWithFrame:NSZeroRect];
+	[t setAllowsColumnReordering:NO];
+	[t setAllowsColumnResizing:YES];
+	[t setAllowsMultipleSelection:NO];
+	[t setAllowsEmptySelection:YES];
+	[t setAllowsColumnSelection:NO];
+	return (id) t;
+}
+
+void tableAppendColumn(id t, intptr_t colnum, char *name, int type, BOOL editable)
+{
+	goTableColumn *c;
+	NSImageCell *ic;
+	NSButtonCell *bc;
+	NSLineBreakMode lbm = NSLineBreakByTruncatingTail;		// default for most types
+
+	c = [[goTableColumn alloc] initWithIdentifier:nil];
+	c->gocolnum = colnum;
+	switch (type) {
+	case colTypeImage:
+		ic = [[NSImageCell alloc] initImageCell:nil];
+		// this is the behavior we want, which differs from the Interface Builder default of proportionally down
+		[ic setImageScaling:NSImageScaleProportionallyUpOrDown];
+		// these two, however, ARE Interface Builder defaults
+		[ic setImageFrameStyle:NSImageFrameNone];
+		[ic setImageAlignment:NSImageAlignCenter];
+		[c setDataCell:ic];
+		break;
+	case colTypeCheckbox:
+		bc = [[NSButtonCell alloc] init];
+		[bc setBezelStyle:NSRegularSquareBezelStyle];		// not explicitly stated as such in Interface Builder; extracted with a test program
+		[bc setButtonType:NSSwitchButton];
+		[bc setBordered:NO];
+		[bc setTransparent:NO];
+		[bc setAllowsMixedState:NO];
+		[bc setTitle:@""];						// no label
+		lbm = NSLineBreakByWordWrapping;		// Interface Builder sets this mode for this type
+		[c setDataCell:bc];
+		break;
+	}
+	// otherwise just use the current cell
+	[c setEditable:editable];
+	[[c headerCell] setStringValue:[NSString stringWithUTF8String:name]];
+	setSmallControlFont((id) [c headerCell]);
+	setStandardControlFont((id) [c dataCell]);
+	// the following are according to Interface Builder
+	// for the header cell, a stub program had to be written because Interface Builder doesn't support editing header cells directly
+	[[c headerCell] setScrollable:NO];
+	[[c headerCell] setWraps:NO];
+	[[c headerCell] setLineBreakMode:NSLineBreakByTruncatingTail];
+	[[c headerCell] setUsesSingleLineMode:NO];
+	[[c headerCell] setTruncatesLastVisibleLine:NO];
+	[[c dataCell] setScrollable:NO];
+	[[c dataCell] setWraps:NO];
+	[[c dataCell] setLineBreakMode:lbm];
+	[[c dataCell] setUsesSingleLineMode:NO];
+	[[c dataCell] setTruncatesLastVisibleLine:NO];
+	[toNSTableView(t) addTableColumn:c];
+}
+
+void tableUpdate(id t)
+{
+	[toNSTableView(t) reloadData];
+}
+
+// also sets the delegate
+void tableMakeDataSource(id table, void *gotable)
+{
+	goTableDataSource *model;
+
+	model = [goTableDataSource new];
+	model->gotable = gotable;
+	[toNSTableView(table) setDataSource:model];
+	[toNSTableView(table) setDelegate:model];
+}
+
+// -[NSTableView sizeToFit] does not actually size to fit
+// -[NSTableColumn sizeToFit] is just for the header
+// -[NSTableColumn sizeToFit] can work for guessing but overrides user settings
+// -[[NSTableColumn headerCell] cellSize] does NOT (despite being documented as returning the minimum needed size)
+// Let's write our own to prefer:
+// - width of the sum of all columns's current widths
+// - height of 5 rows (arbitrary count; seems reasonable) + header view height
+// Hopefully this is reasonable.
+struct xsize tablePreferredSize(id control)
+{
+	NSTableView *t;
+	NSArray *columns;
+	struct xsize s;
+	NSUInteger i, n;
+	NSTableColumn *c;
+
+	t = toNSTableView(control);
+	columns = [t tableColumns];
+	n = [columns count];
+	s.width = 0;
+	for (i = 0; i < n; i++) {
+		CGFloat width;
+
+		c = (NSTableColumn *) [columns objectAtIndex:i];
+		s.width += (intptr_t) [c width];
+	}
+	s.height = 5 * (intptr_t) [t rowHeight];
+	s.height += (intptr_t) [[t headerView] frame].size.height;
+	return s;
+}
+
+intptr_t tableSelected(id table)
+{
+	return (intptr_t) [toNSTableView(table) selectedRow];
+}
+
+void tableSelect(id table, intptr_t row)
+{
+	[toNSTableView(table) deselectAll:table];
+	if (row != -1)
+		[toNSTableView(table) selectRowIndexes:[NSIndexSet indexSetWithIndex:((NSUInteger) row)] byExtendingSelection:NO];
+}