react-native/React/Modules/RCTRedBox.m

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/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#import "RCTRedBox.h"
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#import "RCTBridge.h"
#import "RCTConvert.h"
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#import "RCTDefines.h"
#import "RCTUtils.h"
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#if RCT_DEBUG
@interface RCTRedBoxWindow : UIWindow <UITableViewDelegate, UITableViewDataSource>
@end
@implementation RCTRedBoxWindow
{
UITableView *_stackTraceTableView;
NSString *_lastErrorMessage;
NSArray *_lastStackTrace;
}
- (instancetype)initWithFrame:(CGRect)frame
{
if ((self = [super initWithFrame:frame])) {
self.windowLevel = UIWindowLevelAlert + 1000;
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self.backgroundColor = [UIColor colorWithRed:0.8 green:0 blue:0 alpha:1];
self.hidden = YES;
UIViewController *rootController = [UIViewController new];
self.rootViewController = rootController;
UIView *rootView = rootController.view;
rootView.backgroundColor = [UIColor clearColor];
const CGFloat buttonHeight = 60;
CGRect detailsFrame = rootView.bounds;
detailsFrame.size.height -= buttonHeight;
_stackTraceTableView = [[UITableView alloc] initWithFrame:detailsFrame style:UITableViewStylePlain];
_stackTraceTableView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
_stackTraceTableView.delegate = self;
_stackTraceTableView.dataSource = self;
_stackTraceTableView.backgroundColor = [UIColor clearColor];
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_stackTraceTableView.separatorColor = [UIColor colorWithWhite:1 alpha:0.3];
_stackTraceTableView.separatorStyle = UITableViewCellSeparatorStyleNone;
_stackTraceTableView.indicatorStyle = UIScrollViewIndicatorStyleWhite;
[rootView addSubview:_stackTraceTableView];
UIButton *dismissButton = [UIButton buttonWithType:UIButtonTypeCustom];
dismissButton.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleRightMargin;
dismissButton.accessibilityIdentifier = @"redbox-dismiss";
dismissButton.titleLabel.font = [UIFont systemFontOfSize:14];
[dismissButton setTitle:@"Dismiss (ESC)" forState:UIControlStateNormal];
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[dismissButton setTitleColor:[UIColor colorWithWhite:1 alpha:0.5] forState:UIControlStateNormal];
[dismissButton setTitleColor:[UIColor whiteColor] forState:UIControlStateHighlighted];
[dismissButton addTarget:self action:@selector(dismiss) forControlEvents:UIControlEventTouchUpInside];
UIButton *reloadButton = [UIButton buttonWithType:UIButtonTypeCustom];
reloadButton.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleLeftMargin;
reloadButton.accessibilityIdentifier = @"redbox-reload";
reloadButton.titleLabel.font = [UIFont systemFontOfSize:14];
[reloadButton setTitle:@"Reload JS (\u2318R)" forState:UIControlStateNormal];
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[reloadButton setTitleColor:[UIColor colorWithWhite:1 alpha:0.5] forState:UIControlStateNormal];
[reloadButton setTitleColor:[UIColor whiteColor] forState:UIControlStateHighlighted];
[reloadButton addTarget:self action:@selector(reload) forControlEvents:UIControlEventTouchUpInside];
CGFloat buttonWidth = self.bounds.size.width / 2;
dismissButton.frame = CGRectMake(0, self.bounds.size.height - buttonHeight, buttonWidth, buttonHeight);
reloadButton.frame = CGRectMake(buttonWidth, self.bounds.size.height - buttonHeight, buttonWidth, buttonHeight);
[rootView addSubview:dismissButton];
[rootView addSubview:reloadButton];
}
return self;
}
RCT_NOT_IMPLEMENTED(- (instancetype)initWithCoder:(NSCoder *)aDecoder)
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- (void)dealloc
{
_stackTraceTableView.dataSource = nil;
_stackTraceTableView.delegate = nil;
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[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (void)openStackFrameInEditor:(NSDictionary *)stackFrame
{
NSData *stackFrameJSON = [RCTJSONStringify(stackFrame, nil) dataUsingEncoding:NSUTF8StringEncoding];
NSString *postLength = [NSString stringWithFormat:@"%tu", stackFrameJSON.length];
NSMutableURLRequest *request = [NSMutableURLRequest new];
request.URL = [RCTConvert NSURL:@"http://localhost:8081/open-stack-frame"];
request.HTTPMethod = @"POST";
request.HTTPBody = stackFrameJSON;
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
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[[[NSURLSession sharedSession] dataTaskWithRequest:request] resume];
}
- (void)showErrorMessage:(NSString *)message withStack:(NSArray *)stack showIfHidden:(BOOL)shouldShow
{
if ((self.hidden && shouldShow) || (!self.hidden && [_lastErrorMessage isEqualToString:message])) {
_lastStackTrace = stack;
_lastErrorMessage = message;
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[_stackTraceTableView reloadData];
if (self.hidden) {
[_stackTraceTableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]
atScrollPosition:UITableViewScrollPositionTop
animated:NO];
}
[self makeKeyAndVisible];
[self becomeFirstResponder];
}
}
- (void)dismiss
{
self.hidden = YES;
[self resignFirstResponder];
[RCTSharedApplication().delegate.window makeKeyWindow];
}
- (void)reload
{
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[[NSNotificationCenter defaultCenter] postNotificationName:RCTReloadNotification object:nil userInfo:nil];
}
#pragma mark - TableView
- (NSInteger)numberOfSectionsInTableView:(__unused UITableView *)tableView
{
return 2;
}
- (NSInteger)tableView:(__unused UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return section == 0 ? 1 : _lastStackTrace.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.section == 0) {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"msg-cell"];
return [self reuseCell:cell forErrorMessage:_lastErrorMessage];
}
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
NSUInteger index = indexPath.row;
NSDictionary *stackFrame = _lastStackTrace[index];
return [self reuseCell:cell forStackFrame:stackFrame];
}
- (UITableViewCell *)reuseCell:(UITableViewCell *)cell forErrorMessage:(NSString *)message
{
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"msg-cell"];
cell.textLabel.accessibilityIdentifier = @"redbox-error";
cell.textLabel.textColor = [UIColor whiteColor];
cell.textLabel.font = [UIFont boldSystemFontOfSize:16];
cell.textLabel.lineBreakMode = NSLineBreakByWordWrapping;
cell.textLabel.numberOfLines = 0;
cell.detailTextLabel.textColor = [UIColor whiteColor];
cell.backgroundColor = [UIColor clearColor];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
cell.textLabel.text = message;
return cell;
}
- (UITableViewCell *)reuseCell:(UITableViewCell *)cell forStackFrame:(NSDictionary *)stackFrame
{
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"cell"];
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cell.textLabel.textColor = [UIColor colorWithWhite:1 alpha:0.9];
cell.textLabel.font = [UIFont fontWithName:@"Menlo-Regular" size:14];
cell.textLabel.numberOfLines = 2;
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cell.detailTextLabel.textColor = [UIColor colorWithWhite:1 alpha:0.7];
cell.detailTextLabel.font = [UIFont fontWithName:@"Menlo-Regular" size:11];
cell.detailTextLabel.lineBreakMode = NSLineBreakByTruncatingMiddle;
cell.backgroundColor = [UIColor clearColor];
cell.selectedBackgroundView = [UIView new];
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cell.selectedBackgroundView.backgroundColor = [UIColor colorWithWhite:0 alpha:0.2];
}
cell.textLabel.text = stackFrame[@"methodName"];
cell.detailTextLabel.text = [NSString stringWithFormat:@"%@ @ %@:%@",
[stackFrame[@"file"] lastPathComponent], stackFrame[@"lineNumber"], stackFrame[@"column"]];
return cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.section == 0) {
NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
paragraphStyle.lineBreakMode = NSLineBreakByWordWrapping;
NSDictionary *attributes = @{NSFontAttributeName: [UIFont boldSystemFontOfSize:16],
NSParagraphStyleAttributeName: paragraphStyle};
CGRect boundingRect = [_lastErrorMessage boundingRectWithSize:CGSizeMake(tableView.frame.size.width - 30, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin attributes:attributes context:nil];
return ceil(boundingRect.size.height) + 40;
} else {
return 50;
}
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.section == 1) {
NSUInteger row = indexPath.row;
NSDictionary *stackFrame = _lastStackTrace[row];
[self openStackFrameInEditor:stackFrame];
}
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
#pragma mark - Key commands
- (NSArray *)keyCommands
{
// NOTE: We could use RCTKeyCommands for this, but since
// we control this window, we can use the standard, non-hacky
// mechanism instead
return @[
// Dismiss red box
[UIKeyCommand keyCommandWithInput:UIKeyInputEscape
modifierFlags:0
action:@selector(dismiss)],
// Reload
[UIKeyCommand keyCommandWithInput:@"r"
modifierFlags:UIKeyModifierCommand
action:@selector(reload)]
];
}
- (BOOL)canBecomeFirstResponder
{
return YES;
}
@end
@interface RCTRedBox () <RCTInvalidating>
@end
@implementation RCTRedBox
{
RCTRedBoxWindow *_window;
}
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RCT_EXPORT_MODULE()
- (void)showError:(NSError *)error
{
[self showErrorMessage:error.localizedDescription withDetails:error.localizedFailureReason];
}
- (void)showErrorMessage:(NSString *)message
{
[self showErrorMessage:message withStack:nil showIfHidden:YES];
}
- (void)showErrorMessage:(NSString *)message withDetails:(NSString *)details
{
NSString *combinedMessage = message;
if (details) {
combinedMessage = [NSString stringWithFormat:@"%@\n\n%@", message, details];
}
[self showErrorMessage:combinedMessage];
}
- (void)showErrorMessage:(NSString *)message withStack:(NSArray *)stack
{
[self showErrorMessage:message withStack:stack showIfHidden:YES];
}
- (void)updateErrorMessage:(NSString *)message withStack:(NSArray *)stack
{
[self showErrorMessage:message withStack:stack showIfHidden:NO];
}
- (void)showErrorMessage:(NSString *)message withStack:(NSArray *)stack showIfHidden:(BOOL)shouldShow
{
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dispatch_async(dispatch_get_main_queue(), ^{
if (!_window) {
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_window = [[RCTRedBoxWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
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}
[_window showErrorMessage:message withStack:stack showIfHidden:shouldShow];
});
}
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- (void)dismiss
{
dispatch_async(dispatch_get_main_queue(), ^{
[_window dismiss];
});
}
- (void)invalidate
{
[self dismiss];
}
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@end
@implementation RCTBridge (RCTRedBox)
- (RCTRedBox *)redBox
{
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return self.modules[RCTBridgeModuleNameForClass([RCTRedBox class])];
}
@end
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#else // Disabled
@implementation RCTRedBox
+ (NSString *)moduleName { return nil; }
- (void)showError:(NSError *)message {}
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- (void)showErrorMessage:(NSString *)message {}
- (void)showErrorMessage:(NSString *)message withDetails:(NSString *)details {}
- (void)showErrorMessage:(NSString *)message withStack:(NSArray *)stack {}
- (void)updateErrorMessage:(NSString *)message withStack:(NSArray *)stack {}
- (void)showErrorMessage:(NSString *)message withStack:(NSArray *)stack showIfHidden:(BOOL)shouldShow {}
- (void)dismiss {}
@end
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@implementation RCTBridge (RCTRedBox)
- (RCTRedBox *)redBox { return nil; }
@end
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#endif