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@@ -0,0 +1,572 @@
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// 7 june 2016
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#import "uipriv_darwin.h"
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// TODO in the test program, sometimes one of the radio buttons can disappear (try when spaced)
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@interface formChild : NSView
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@property uiControl *c;
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@property (strong) NSTextField *label;
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@property BOOL stretchy;
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@property NSLayoutPriority oldHorzHuggingPri;
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@property NSLayoutPriority oldVertHuggingPri;
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@property (strong) NSLayoutConstraint *baseline;
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@property (strong) NSLayoutConstraint *leading;
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@property (strong) NSLayoutConstraint *top;
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@property (strong) NSLayoutConstraint *trailing;
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@property (strong) NSLayoutConstraint *bottom;
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- (id)initWithLabel:(NSTextField *)l;
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- (void)onDestroy;
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- (NSView *)view;
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@end
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@interface formView : NSView {
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uiForm *f;
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NSMutableArray *children;
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int padded;
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NSLayoutConstraint *first;
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NSMutableArray *inBetweens;
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NSLayoutConstraint *last;
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NSMutableArray *widths;
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NSMutableArray *leadings;
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NSMutableArray *middles;
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NSMutableArray *trailings;
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}
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- (id)initWithF:(uiForm *)ff;
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- (void)onDestroy;
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- (void)removeOurConstraints;
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- (void)syncEnableStates:(int)enabled;
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- (CGFloat)paddingAmount;
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- (void)establishOurConstraints;
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- (void)append:(NSString *)label c:(uiControl *)c stretchy:(int)stretchy;
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- (void)delete:(int)n;
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- (int)numChildren;
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- (int)isPadded;
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- (void)setPadded:(int)p;
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- (BOOL)hugsTrailing;
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- (BOOL)hugsBottom;
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- (int)nStretchy;
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@end
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struct uiForm {
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uiDarwinControl c;
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formView *view;
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};
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@implementation formChild
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- (id)initWithLabel:(NSTextField *)l
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{
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self = [super initWithFrame:NSZeroRect];
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if (self) {
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self.label = l;
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[self.label setTranslatesAutoresizingMaskIntoConstraints:NO];
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[self.label setContentHuggingPriority:NSLayoutPriorityRequired forOrientation:NSLayoutConstraintOrientationHorizontal];
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[self.label setContentHuggingPriority:NSLayoutPriorityRequired forOrientation:NSLayoutConstraintOrientationVertical];
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[self.label setContentCompressionResistancePriority:NSLayoutPriorityRequired forOrientation:NSLayoutConstraintOrientationHorizontal];
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[self.label setContentCompressionResistancePriority:NSLayoutPriorityRequired forOrientation:NSLayoutConstraintOrientationVertical];
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[self addSubview:self.label];
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self.leading = uiprivMkConstraint(self.label, NSLayoutAttributeLeading,
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NSLayoutRelationGreaterThanOrEqual,
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self, NSLayoutAttributeLeading,
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1, 0,
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@"uiForm label leading");
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[self addConstraint:self.leading];
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self.top = uiprivMkConstraint(self.label, NSLayoutAttributeTop,
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NSLayoutRelationEqual,
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self, NSLayoutAttributeTop,
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1, 0,
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@"uiForm label top");
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[self addConstraint:self.top];
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self.trailing = uiprivMkConstraint(self.label, NSLayoutAttributeTrailing,
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NSLayoutRelationEqual,
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self, NSLayoutAttributeTrailing,
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1, 0,
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@"uiForm label trailing");
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[self addConstraint:self.trailing];
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self.bottom = uiprivMkConstraint(self.label, NSLayoutAttributeBottom,
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NSLayoutRelationEqual,
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self, NSLayoutAttributeBottom,
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1, 0,
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@"uiForm label bottom");
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[self addConstraint:self.bottom];
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}
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return self;
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}
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- (void)onDestroy
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{
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[self removeConstraint:self.trailing];
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self.trailing = nil;
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[self removeConstraint:self.top];
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self.top = nil;
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[self removeConstraint:self.bottom];
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self.bottom = nil;
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[self.label removeFromSuperview];
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self.label = nil;
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}
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- (NSView *)view
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{
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return (NSView *) uiControlHandle(self.c);
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}
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@end
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@implementation formView
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- (id)initWithF:(uiForm *)ff
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{
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self = [super initWithFrame:NSZeroRect];
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if (self != nil) {
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self->f = ff;
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self->padded = 0;
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self->children = [NSMutableArray new];
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self->inBetweens = [NSMutableArray new];
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self->widths = [NSMutableArray new];
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self->leadings = [NSMutableArray new];
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self->middles = [NSMutableArray new];
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self->trailings = [NSMutableArray new];
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}
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return self;
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}
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- (void)onDestroy
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{
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formChild *fc;
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[self removeOurConstraints];
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[self->inBetweens release];
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[self->widths release];
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[self->leadings release];
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[self->middles release];
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[self->trailings release];
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for (fc in self->children) {
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[self removeConstraint:fc.baseline];
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fc.baseline = nil;
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uiControlSetParent(fc.c, NULL);
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uiDarwinControlSetSuperview(uiDarwinControl(fc.c), nil);
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uiControlDestroy(fc.c);
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[fc onDestroy];
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[fc removeFromSuperview];
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}
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[self->children release];
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}
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- (void)removeOurConstraints
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{
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if (self->first != nil) {
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[self removeConstraint:self->first];
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[self->first release];
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self->first = nil;
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}
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if ([self->inBetweens count] != 0) {
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[self removeConstraints:self->inBetweens];
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[self->inBetweens removeAllObjects];
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}
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if (self->last != nil) {
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[self removeConstraint:self->last];
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[self->last release];
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self->last = nil;
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}
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if ([self->widths count] != 0) {
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[self removeConstraints:self->widths];
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[self->widths removeAllObjects];
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}
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if ([self->leadings count] != 0) {
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[self removeConstraints:self->leadings];
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[self->leadings removeAllObjects];
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}
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if ([self->middles count] != 0) {
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[self removeConstraints:self->middles];
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[self->middles removeAllObjects];
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}
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if ([self->trailings count] != 0) {
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[self removeConstraints:self->trailings];
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[self->trailings removeAllObjects];
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}
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}
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- (void)syncEnableStates:(int)enabled
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{
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formChild *fc;
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for (fc in self->children)
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uiDarwinControlSyncEnableState(uiDarwinControl(fc.c), enabled);
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}
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- (CGFloat)paddingAmount
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{
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if (!self->padded)
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return 0.0;
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return uiDarwinPaddingAmount(NULL);
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}
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- (void)establishOurConstraints
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{
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formChild *fc;
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CGFloat padding;
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NSView *prev, *prevlabel;
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NSLayoutConstraint *c;
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[self removeOurConstraints];
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if ([self->children count] == 0)
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return;
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padding = [self paddingAmount];
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// first arrange the children vertically and make them the same width
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prev = nil;
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for (fc in self->children) {
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[fc setHidden:!uiControlVisible(fc.c)];
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if (!uiControlVisible(fc.c))
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continue;
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if (prev == nil) { // first view
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self->first = uiprivMkConstraint(self, NSLayoutAttributeTop,
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NSLayoutRelationEqual,
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[fc view], NSLayoutAttributeTop,
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1, 0,
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@"uiForm first vertical constraint");
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[self addConstraint:self->first];
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[self->first retain];
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prev = [fc view];
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prevlabel = fc;
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continue;
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}
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// not the first; link it
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c = uiprivMkConstraint(prev, NSLayoutAttributeBottom,
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NSLayoutRelationEqual,
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[fc view], NSLayoutAttributeTop,
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1, -padding,
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@"uiForm in-between vertical constraint");
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[self addConstraint:c];
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[self->inBetweens addObject:c];
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// and make the same width
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c = uiprivMkConstraint(prev, NSLayoutAttributeWidth,
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NSLayoutRelationEqual,
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[fc view], NSLayoutAttributeWidth,
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1, 0,
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@"uiForm control width constraint");
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[self addConstraint:c];
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[self->widths addObject:c];
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c = uiprivMkConstraint(prevlabel, NSLayoutAttributeWidth,
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NSLayoutRelationEqual,
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fc, NSLayoutAttributeWidth,
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1, 0,
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@"uiForm label lwidth constraint");
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[self addConstraint:c];
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[self->widths addObject:c];
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prev = [fc view];
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prevlabel = fc;
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}
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if (prev == nil) // all hidden; act as if nothing there
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return;
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self->last = uiprivMkConstraint(prev, NSLayoutAttributeBottom,
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NSLayoutRelationEqual,
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self, NSLayoutAttributeBottom,
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1, 0,
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@"uiForm last vertical constraint");
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[self addConstraint:self->last];
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[self->last retain];
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// now arrange the controls horizontally
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for (fc in self->children) {
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if (!uiControlVisible(fc.c))
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continue;
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c = uiprivMkConstraint(self, NSLayoutAttributeLeading,
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NSLayoutRelationEqual,
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fc, NSLayoutAttributeLeading,
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1, 0,
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@"uiForm leading constraint");
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[self addConstraint:c];
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[self->leadings addObject:c];
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// coerce the control to be as wide as possible
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// see http://stackoverflow.com/questions/37710892/in-auto-layout-i-set-up-labels-that-shouldnt-grow-horizontally-and-controls-th
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c = uiprivMkConstraint(self, NSLayoutAttributeLeading,
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NSLayoutRelationEqual,
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[fc view], NSLayoutAttributeLeading,
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1, 0,
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@"uiForm leading constraint");
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[c setPriority:NSLayoutPriorityDefaultHigh];
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[self addConstraint:c];
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[self->leadings addObject:c];
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c = uiprivMkConstraint(fc, NSLayoutAttributeTrailing,
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NSLayoutRelationEqual,
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[fc view], NSLayoutAttributeLeading,
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1, -padding,
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@"uiForm middle constraint");
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[self addConstraint:c];
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[self->middles addObject:c];
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c = uiprivMkConstraint([fc view], NSLayoutAttributeTrailing,
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NSLayoutRelationEqual,
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self, NSLayoutAttributeTrailing,
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1, 0,
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@"uiForm trailing constraint");
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[self addConstraint:c];
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[self->trailings addObject:c];
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// TODO
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c = uiprivMkConstraint(fc, NSLayoutAttributeBottom,
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NSLayoutRelationLessThanOrEqual,
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self, NSLayoutAttributeBottom,
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1, 0,
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@"TODO");
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[self addConstraint:c];
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[self->trailings addObject:c];
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}
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// and make all stretchy controls have the same height
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prev = nil;
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for (fc in self->children) {
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if (!uiControlVisible(fc.c))
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continue;
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if (!fc.stretchy)
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continue;
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if (prev == nil) {
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prev = [fc view];
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continue;
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}
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c = uiprivMkConstraint([fc view], NSLayoutAttributeHeight,
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NSLayoutRelationEqual,
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prev, NSLayoutAttributeHeight,
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1, 0,
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@"uiForm stretchy constraint");
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[self addConstraint:c];
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// TODO make a dedicated array for this
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[self->leadings addObject:c];
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}
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// we don't arrange the labels vertically; that's done when we add the control since those constraints don't need to change (they just need to be at their baseline)
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}
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- (void)append:(NSString *)label c:(uiControl *)c stretchy:(int)stretchy
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{
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formChild *fc;
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NSLayoutPriority priority;
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NSLayoutAttribute attribute;
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int oldnStretchy;
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fc = [[formChild alloc] initWithLabel:uiprivNewLabel(label)];
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fc.c = c;
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fc.stretchy = stretchy;
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fc.oldHorzHuggingPri = uiDarwinControlHuggingPriority(uiDarwinControl(fc.c), NSLayoutConstraintOrientationHorizontal);
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fc.oldVertHuggingPri = uiDarwinControlHuggingPriority(uiDarwinControl(fc.c), NSLayoutConstraintOrientationVertical);
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[fc setTranslatesAutoresizingMaskIntoConstraints:NO];
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[self addSubview:fc];
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uiControlSetParent(fc.c, uiControl(self->f));
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uiDarwinControlSetSuperview(uiDarwinControl(fc.c), self);
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uiDarwinControlSyncEnableState(uiDarwinControl(fc.c), uiControlEnabledToUser(uiControl(self->f)));
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// if a control is stretchy, it should not hug vertically
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// otherwise, it should *forcibly* hug
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if (fc.stretchy)
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priority = NSLayoutPriorityDefaultLow;
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else
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// LONGTERM will default high work?
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priority = NSLayoutPriorityRequired;
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uiDarwinControlSetHuggingPriority(uiDarwinControl(fc.c), priority, NSLayoutConstraintOrientationVertical);
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// make sure controls don't hug their horizontal direction so they fill the width of the view
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uiDarwinControlSetHuggingPriority(uiDarwinControl(fc.c), NSLayoutPriorityDefaultLow, NSLayoutConstraintOrientationHorizontal);
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// and constrain the baselines to position the label vertically
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// if the view is a scroll view, align tops, not baselines
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// this is what Interface Builder does
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attribute = NSLayoutAttributeBaseline;
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if ([[fc view] isKindOfClass:[NSScrollView class]])
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attribute = NSLayoutAttributeTop;
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fc.baseline = uiprivMkConstraint(fc.label, attribute,
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NSLayoutRelationEqual,
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[fc view], attribute,
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1, 0,
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@"uiForm baseline constraint");
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[self addConstraint:fc.baseline];
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oldnStretchy = [self nStretchy];
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[self->children addObject:fc];
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[self establishOurConstraints];
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if (fc.stretchy)
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if (oldnStretchy == 0)
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uiDarwinNotifyEdgeHuggingChanged(uiDarwinControl(self->f));
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[fc release]; // we don't need the initial reference now
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}
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- (void)delete:(int)n
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{
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formChild *fc;
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int stretchy;
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fc = (formChild *) [self->children objectAtIndex:n];
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stretchy = fc.stretchy;
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uiControlSetParent(fc.c, NULL);
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uiDarwinControlSetSuperview(uiDarwinControl(fc.c), nil);
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uiDarwinControlSetHuggingPriority(uiDarwinControl(fc.c), fc.oldHorzHuggingPri, NSLayoutConstraintOrientationHorizontal);
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uiDarwinControlSetHuggingPriority(uiDarwinControl(fc.c), fc.oldVertHuggingPri, NSLayoutConstraintOrientationVertical);
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[fc onDestroy];
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[self->children removeObjectAtIndex:n];
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[self establishOurConstraints];
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if (stretchy)
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if ([self nStretchy] == 0)
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uiDarwinNotifyEdgeHuggingChanged(uiDarwinControl(self->f));
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}
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- (int)numChildren
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{
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return (int) [self->children count];
|
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}
|
||||
|
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- (int)isPadded
|
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{
|
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return self->padded;
|
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}
|
||||
|
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- (void)setPadded:(int)p
|
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{
|
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CGFloat padding;
|
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NSLayoutConstraint *c;
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|
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self->padded = p;
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padding = [self paddingAmount];
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for (c in self->inBetweens)
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[c setConstant:-padding];
|
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for (c in self->middles)
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[c setConstant:-padding];
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}
|
||||
|
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- (BOOL)hugsTrailing
|
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{
|
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return YES; // always hug trailing
|
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}
|
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|
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- (BOOL)hugsBottom
|
||||
{
|
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// only hug if we have stretchy
|
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return [self nStretchy] != 0;
|
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}
|
||||
|
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- (int)nStretchy
|
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{
|
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formChild *fc;
|
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int n;
|
||||
|
||||
n = 0;
|
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for (fc in self->children) {
|
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if (!uiControlVisible(fc.c))
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continue;
|
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if (fc.stretchy)
|
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n++;
|
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}
|
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return n;
|
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}
|
||||
|
||||
@end
|
||||
|
||||
static void uiFormDestroy(uiControl *c)
|
||||
{
|
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uiForm *f = uiForm(c);
|
||||
|
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[f->view onDestroy];
|
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[f->view release];
|
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uiFreeControl(uiControl(f));
|
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}
|
||||
|
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uiDarwinControlDefaultHandle(uiForm, view)
|
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uiDarwinControlDefaultParent(uiForm, view)
|
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uiDarwinControlDefaultSetParent(uiForm, view)
|
||||
uiDarwinControlDefaultToplevel(uiForm, view)
|
||||
uiDarwinControlDefaultVisible(uiForm, view)
|
||||
uiDarwinControlDefaultShow(uiForm, view)
|
||||
uiDarwinControlDefaultHide(uiForm, view)
|
||||
uiDarwinControlDefaultEnabled(uiForm, view)
|
||||
uiDarwinControlDefaultEnable(uiForm, view)
|
||||
uiDarwinControlDefaultDisable(uiForm, view)
|
||||
|
||||
static void uiFormSyncEnableState(uiDarwinControl *c, int enabled)
|
||||
{
|
||||
uiForm *f = uiForm(c);
|
||||
|
||||
if (uiDarwinShouldStopSyncEnableState(uiDarwinControl(f), enabled))
|
||||
return;
|
||||
[f->view syncEnableStates:enabled];
|
||||
}
|
||||
|
||||
uiDarwinControlDefaultSetSuperview(uiForm, view)
|
||||
|
||||
static BOOL uiFormHugsTrailingEdge(uiDarwinControl *c)
|
||||
{
|
||||
uiForm *f = uiForm(c);
|
||||
|
||||
return [f->view hugsTrailing];
|
||||
}
|
||||
|
||||
static BOOL uiFormHugsBottom(uiDarwinControl *c)
|
||||
{
|
||||
uiForm *f = uiForm(c);
|
||||
|
||||
return [f->view hugsBottom];
|
||||
}
|
||||
|
||||
static void uiFormChildEdgeHuggingChanged(uiDarwinControl *c)
|
||||
{
|
||||
uiForm *f = uiForm(c);
|
||||
|
||||
[f->view establishOurConstraints];
|
||||
}
|
||||
|
||||
uiDarwinControlDefaultHuggingPriority(uiForm, view)
|
||||
uiDarwinControlDefaultSetHuggingPriority(uiForm, view)
|
||||
|
||||
static void uiFormChildVisibilityChanged(uiDarwinControl *c)
|
||||
{
|
||||
uiForm *f = uiForm(c);
|
||||
|
||||
[f->view establishOurConstraints];
|
||||
}
|
||||
|
||||
void uiFormAppend(uiForm *f, const char *label, uiControl *c, int stretchy)
|
||||
{
|
||||
// LONGTERM on other platforms
|
||||
// or at leat allow this and implicitly turn it into a spacer
|
||||
if (c == NULL)
|
||||
uiprivUserBug("You cannot add NULL to a uiForm.");
|
||||
[f->view append:uiprivToNSString(label) c:c stretchy:stretchy];
|
||||
}
|
||||
|
||||
void uiFormDelete(uiForm *f, int n)
|
||||
{
|
||||
[f->view delete:n];
|
||||
}
|
||||
|
||||
int uiFormNumChildren(uiForm *f)
|
||||
{
|
||||
return [f->view numChildren];
|
||||
}
|
||||
|
||||
int uiFormPadded(uiForm *f)
|
||||
{
|
||||
return [f->view isPadded];
|
||||
}
|
||||
|
||||
void uiFormSetPadded(uiForm *f, int padded)
|
||||
{
|
||||
[f->view setPadded:padded];
|
||||
}
|
||||
|
||||
uiForm *uiNewForm(void)
|
||||
{
|
||||
uiForm *f;
|
||||
|
||||
uiDarwinNewControl(uiForm, f);
|
||||
|
||||
f->view = [[formView alloc] initWithF:f];
|
||||
|
||||
return f;
|
||||
}
|
||||
Reference in new issue
Block a user