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// Copyright 2009 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#import "ui/base/cocoa/find_pasteboard.h"
#include "base/check.h"
#include "base/strings/sys_string_conversions.h"
NSString* kFindPasteboardChangedNotification =
@"kFindPasteboardChangedNotification_Chrome";
@implementation FindPasteboard {
NSString* _findText;
}
+ (FindPasteboard*)sharedInstance {
static FindPasteboard* instance = nil;
if (!instance) {
instance = [[FindPasteboard alloc] init];
}
return instance;
}
- (instancetype)init {
if ((self = [super init])) {
_findText = @"";
// Check if the text in the find pasteboard has changed on app activate.
[NSNotificationCenter.defaultCenter
addObserver:self
selector:@selector(loadTextFromPasteboard:)
name:NSApplicationDidBecomeActiveNotification
object:nil];
[self loadTextFromPasteboard:nil];
}
return self;
}
- (void)dealloc {
// Since this is a singleton, this should only be executed in test code.
[NSNotificationCenter.defaultCenter removeObserver:self];
}
- (NSPasteboard*)findPasteboard {
return [NSPasteboard pasteboardWithName:NSPasteboardNameFind];
}
- (void)loadTextFromPasteboard:(NSNotification*)notification {
NSPasteboard* findPasteboard = [self findPasteboard];
NSArray* objects = [findPasteboard readObjectsForClasses:@[ [NSString class] ]
options:nil];
if (objects.count) {
[self setFindText:objects.firstObject];
}
}
- (NSString*)findText {
return _findText;
}
- (void)setFindText:(NSString*)newText {
DCHECK(newText);
if (!newText) {
return;
}
DCHECK(NSThread.isMainThread);
BOOL textChanged = ![_findText isEqualToString:newText];
if (textChanged) {
_findText = [newText copy];
NSPasteboard* findPasteboard = [self findPasteboard];
[findPasteboard clearContents];
[findPasteboard writeObjects:@[ _findText ]];
[NSNotificationCenter.defaultCenter
postNotificationName:kFindPasteboardChangedNotification
object:self];
}
}
@end
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