react-native/Libraries/Text/RCTTextManager.m

135 lines
4.4 KiB
Objective-C

/**
* 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 "RCTTextManager.h"
#import "RCTAssert.h"
#import "RCTConvert.h"
#import "RCTLog.h"
#import "RCTShadowRawText.h"
#import "RCTShadowText.h"
#import "RCTSparseArray.h"
#import "RCTText.h"
#import "UIView+React.h"
@implementation RCTTextManager
RCT_EXPORT_MODULE()
- (UIView *)view
{
return [[RCTText alloc] init];
}
- (RCTShadowView *)shadowView
{
return [[RCTShadowText alloc] init];
}
#pragma mark - View properties
RCT_REMAP_VIEW_PROPERTY(containerBackgroundColor, backgroundColor, UIColor)
#pragma mark - Shadow properties
RCT_EXPORT_SHADOW_PROPERTY(writingDirection, NSWritingDirection)
RCT_EXPORT_SHADOW_PROPERTY(color, UIColor)
RCT_EXPORT_SHADOW_PROPERTY(fontFamily, NSString)
RCT_EXPORT_SHADOW_PROPERTY(fontSize, CGFloat)
RCT_EXPORT_SHADOW_PROPERTY(fontWeight, NSString)
RCT_EXPORT_SHADOW_PROPERTY(fontStyle, NSString)
RCT_EXPORT_SHADOW_PROPERTY(isHighlighted, BOOL)
RCT_EXPORT_SHADOW_PROPERTY(letterSpacing, CGFloat)
RCT_EXPORT_SHADOW_PROPERTY(lineHeight, CGFloat)
RCT_EXPORT_SHADOW_PROPERTY(maximumNumberOfLines, NSInteger)
RCT_EXPORT_SHADOW_PROPERTY(shadowOffset, CGSize)
RCT_EXPORT_SHADOW_PROPERTY(textAlign, NSTextAlignment)
RCT_REMAP_SHADOW_PROPERTY(backgroundColor, textBackgroundColor, UIColor)
RCT_CUSTOM_SHADOW_PROPERTY(containerBackgroundColor, UIColor, RCTShadowText)
{
view.backgroundColor = json ? [RCTConvert UIColor:json] : defaultView.backgroundColor;
view.isBGColorExplicitlySet = json ? YES : defaultView.isBGColorExplicitlySet;
}
RCT_CUSTOM_SHADOW_PROPERTY(numberOfLines, NSInteger, RCTShadowText)
{
NSLineBreakMode truncationMode = NSLineBreakByClipping;
view.maximumNumberOfLines = json ? [RCTConvert NSInteger:json] : defaultView.maximumNumberOfLines;
if (view.maximumNumberOfLines > 0) {
truncationMode = NSLineBreakByTruncatingTail;
}
view.truncationMode = truncationMode;
}
- (RCTViewManagerUIBlock)uiBlockToAmendWithShadowViewRegistry:(RCTSparseArray *)shadowViewRegistry
{
NSMutableArray *uiBlocks = [NSMutableArray new];
for (RCTShadowView *rootView in shadowViewRegistry.allObjects) {
if (![rootView isReactRootView]) {
// This isn't a root view
continue;
}
if (![rootView isTextDirty]) {
// No text processing to be done
continue;
}
RCTSparseArray *reactTaggedAttributedStrings = [[RCTSparseArray alloc] init];
NSMutableArray *queue = [NSMutableArray arrayWithObject:rootView];
for (NSInteger i = 0; i < [queue count]; i++) {
RCTShadowView *shadowView = queue[i];
RCTAssert([shadowView isTextDirty], @"Don't process any nodes that don't have dirty text");
if ([shadowView isKindOfClass:[RCTShadowText class]]) {
RCTShadowText *shadowText = (RCTShadowText *)shadowView;
reactTaggedAttributedStrings[shadowText.reactTag] = [shadowText attributedString];
} else if ([shadowView isKindOfClass:[RCTShadowRawText class]]) {
RCTLogError(@"Raw text cannot be used outside of a <Text> tag. Not rendering string: '%@'", [(RCTShadowRawText *)shadowView text]);
} else {
for (RCTShadowView *child in [shadowView reactSubviews]) {
if ([child isTextDirty]) {
[queue addObject:child];
}
}
}
[shadowView setTextComputed];
}
[uiBlocks addObject:^(RCTUIManager *uiManager, RCTSparseArray *viewRegistry) {
[reactTaggedAttributedStrings enumerateObjectsUsingBlock:^(NSAttributedString *attributedString, NSNumber *reactTag, BOOL *stop) {
RCTText *text = viewRegistry[reactTag];
text.attributedText = attributedString;
}];
}];
}
return ^(RCTUIManager *uiManager, RCTSparseArray *viewRegistry) {
for (RCTViewManagerUIBlock shadowBlock in uiBlocks) {
shadowBlock(uiManager, viewRegistry);
}
};
}
- (RCTViewManagerUIBlock)uiBlockToAmendWithShadowView:(RCTShadowText *)shadowView
{
NSNumber *reactTag = shadowView.reactTag;
UIEdgeInsets padding = shadowView.paddingAsInsets;
return ^(RCTUIManager *uiManager, RCTSparseArray *viewRegistry) {
RCTText *text = viewRegistry[reactTag];
text.contentInset = padding;
text.layoutManager = shadowView.layoutManager;
text.textContainer = shadowView.textContainer;
};
}
@end