added files via upload

Tweaks/FLEX/GlobalStateExplorers/SystemLog/FLEXSystemLogCell.m

@@ -0,0 +1,119 @@
+//
+//  FLEXSystemLogCell.m
+//  FLEX
+//
+//  Created by Ryan Olson on 1/25/15.
+//  Copyright (c) 2020 FLEX Team. All rights reserved.
+//
+
+#import "FLEXSystemLogCell.h"
+#import "FLEXSystemLogMessage.h"
+#import "UIFont+FLEX.h"
+
+NSString *const kFLEXSystemLogCellIdentifier = @"FLEXSystemLogCellIdentifier";
+
+@interface FLEXSystemLogCell ()
+
+@property (nonatomic) UILabel *logMessageLabel;
+@property (nonatomic) NSAttributedString *logMessageAttributedText;
+
+@end
+
+@implementation FLEXSystemLogCell
+
+- (void)postInit {
+    [super postInit];
+    
+    self.logMessageLabel = [UILabel new];
+    self.logMessageLabel.numberOfLines = 0;
+    self.separatorInset = UIEdgeInsetsZero;
+    self.selectionStyle = UITableViewCellSelectionStyleNone;
+    [self.contentView addSubview:self.logMessageLabel];
+}
+
+- (void)setLogMessage:(FLEXSystemLogMessage *)logMessage {
+    if (![_logMessage isEqual:logMessage]) {
+        _logMessage = logMessage;
+        self.logMessageAttributedText = nil;
+        [self setNeedsLayout];
+    }
+}
+
+- (void)setHighlightedText:(NSString *)highlightedText {
+    if (![_highlightedText isEqual:highlightedText]) {
+        _highlightedText = highlightedText;
+        self.logMessageAttributedText = nil;
+        [self setNeedsLayout];
+    }
+}
+
+- (NSAttributedString *)logMessageAttributedText {
+    if (!_logMessageAttributedText) {
+        _logMessageAttributedText = [[self class] attributedTextForLogMessage:self.logMessage highlightedText:self.highlightedText];
+    }
+    return _logMessageAttributedText;
+}
+
+static const UIEdgeInsets kFLEXLogMessageCellInsets = {10.0, 10.0, 10.0, 10.0};
+
+- (void)layoutSubviews {
+    [super layoutSubviews];
+
+    self.logMessageLabel.attributedText = self.logMessageAttributedText;
+    self.logMessageLabel.frame = UIEdgeInsetsInsetRect(self.contentView.bounds, kFLEXLogMessageCellInsets);
+}
+
+
+#pragma mark - Stateless helpers
+
++ (NSAttributedString *)attributedTextForLogMessage:(FLEXSystemLogMessage *)logMessage highlightedText:(NSString *)highlightedText {
+    NSString *text = [self displayedTextForLogMessage:logMessage];
+    NSDictionary<NSString *, id> *attributes = @{ NSFontAttributeName : UIFont.flex_codeFont };
+    NSAttributedString *attributedText = [[NSAttributedString alloc] initWithString:text attributes:attributes];
+
+    if (highlightedText.length > 0) {
+        NSMutableAttributedString *mutableAttributedText = attributedText.mutableCopy;
+        NSMutableDictionary<NSString *, id> *highlightAttributes = attributes.mutableCopy;
+        highlightAttributes[NSBackgroundColorAttributeName] = UIColor.yellowColor;
+        
+        NSRange remainingSearchRange = NSMakeRange(0, text.length);
+        while (remainingSearchRange.location < text.length) {
+            remainingSearchRange.length = text.length - remainingSearchRange.location;
+            NSRange foundRange = [text rangeOfString:highlightedText options:NSCaseInsensitiveSearch range:remainingSearchRange];
+            if (foundRange.location != NSNotFound) {
+                remainingSearchRange.location = foundRange.location + foundRange.length;
+                [mutableAttributedText setAttributes:highlightAttributes range:foundRange];
+            } else {
+                break;
+            }
+        }
+        attributedText = mutableAttributedText;
+    }
+
+    return attributedText;
+}
+
++ (NSString *)displayedTextForLogMessage:(FLEXSystemLogMessage *)logMessage {
+    return [NSString stringWithFormat:@"%@: %@", [self logTimeStringFromDate:logMessage.date], logMessage.messageText];
+}
+
++ (CGFloat)preferredHeightForLogMessage:(FLEXSystemLogMessage *)logMessage inWidth:(CGFloat)width {
+    UIEdgeInsets insets = kFLEXLogMessageCellInsets;
+    CGFloat availableWidth = width - insets.left - insets.right;
+    NSAttributedString *attributedLogText = [self attributedTextForLogMessage:logMessage highlightedText:nil];
+    CGSize labelSize = [attributedLogText boundingRectWithSize:CGSizeMake(availableWidth, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading context:nil].size;
+    return labelSize.height + insets.top + insets.bottom;
+}
+
++ (NSString *)logTimeStringFromDate:(NSDate *)date {
+    static NSDateFormatter *formatter = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        formatter = [NSDateFormatter new];
+        formatter.dateFormat = @"yyyy-MM-dd HH:mm:ss.SSS";
+    });
+
+    return [formatter stringFromDate:date];
+}
+
+@end