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// 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> {
@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;
BOOL isObject = FALSE;
colnum = ((goTableColumn *) col)->gocolnum;
ret = goTableDataSource_getValue(self->gotable, (intptr_t) row, colnum, &isObject);
if (isObject)
return (id) ret;
str = (char *) ret;
s = [NSString stringWithUTF8String:str];
free(str); // allocated with C.CString() on the Go side
return (id) s;
}
@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)
{
goTableColumn *c;
NSImageCell *ic;
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;
}
// otherwise just use the current cell
[c setEditable:NO];
[[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:NSLineBreakByTruncatingTail];
[[c dataCell] setUsesSingleLineMode:NO];
[[c dataCell] setTruncatesLastVisibleLine:NO];
[toNSTableView(t) addTableColumn:c];
}
void tableUpdate(id t)
{
[toNSTableView(t) reloadData];
}
void tableMakeDataSource(id table, void *gotable)
{
goTableDataSource *model;
model = [goTableDataSource new];
model->gotable = gotable;
[toNSTableView(table) setDataSource: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;
}
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