added files via upload

Tweaks/FLEX/GlobalStateExplorers/DatabaseBrowser/FLEXTableColumnHeader.m

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+//
+//  FLEXTableContentHeaderCell.m
+//  FLEX
+//
+//  Created by Peng Tao on 15/11/26.
+//  Copyright © 2015年 f. All rights reserved.
+//
+
+#import "FLEXTableColumnHeader.h"
+#import "FLEXColor.h"
+#import "UIFont+FLEX.h"
+#import "FLEXUtility.h"
+
+static const CGFloat kMargin = 5;
+static const CGFloat kArrowWidth = 20;
+
+@interface FLEXTableColumnHeader ()
+@property (nonatomic, readonly) UILabel *arrowLabel;
+@property (nonatomic, readonly) UIView *lineView;
+@end
+
+@implementation FLEXTableColumnHeader
+
+- (instancetype)initWithFrame:(CGRect)frame {
+    self = [super initWithFrame:frame];
+    if (self) {
+        self.backgroundColor = FLEXColor.secondaryBackgroundColor;
+        
+        _titleLabel = [UILabel new];
+        _titleLabel.font = UIFont.flex_defaultTableCellFont;
+        [self addSubview:_titleLabel];
+        
+        _arrowLabel = [UILabel new];
+        _arrowLabel.font = UIFont.flex_defaultTableCellFont;
+        [self addSubview:_arrowLabel];
+        
+        _lineView = [UIView new];
+        _lineView.backgroundColor = FLEXColor.hairlineColor;
+        [self addSubview:_lineView];
+        
+    }
+    return self;
+}
+
+- (void)setSortType:(FLEXTableColumnHeaderSortType)type {
+    _sortType = type;
+    
+    switch (type) {
+        case FLEXTableColumnHeaderSortTypeNone:
+            _arrowLabel.text = @"";
+            break;
+        case FLEXTableColumnHeaderSortTypeAsc:
+            _arrowLabel.text = @"⬆️";
+            break;
+        case FLEXTableColumnHeaderSortTypeDesc:
+            _arrowLabel.text = @"⬇️";
+            break;
+    }
+}
+
+- (void)layoutSubviews {
+    [super layoutSubviews];
+    
+    CGSize size = self.frame.size;
+    
+    self.titleLabel.frame = CGRectMake(kMargin, 0, size.width - kArrowWidth - kMargin, size.height);
+    self.arrowLabel.frame = CGRectMake(size.width - kArrowWidth, 0, kArrowWidth, size.height);
+    self.lineView.frame = CGRectMake(size.width - 1, 2, FLEXPointsToPixels(1), size.height - 4);
+}
+
+- (CGSize)sizeThatFits:(CGSize)size {
+    CGFloat margins = kArrowWidth - 2 * kMargin;
+    size = CGSizeMake(size.width - margins, size.height);
+    CGFloat width = [_titleLabel sizeThatFits:size].width + margins;
+    return CGSizeMake(width, size.height);
+}
+
+@end