Luk*_*asz 6 macos cocoa objective-c
我有一个mac cocoa应用程序,其中包含一些包含一些文本的webview.我想使用NSTextFinder提供的默认查找栏搜索该文本.虽然这看起来很容易通过NSTextFinder类引用读取,但我无法显示查找栏.我错过了什么?
作为旁注:
- 是的,我尝试将findBarContainer设置为不同的视图,同样的事情.我回到滚动视图以消除调试的复杂性
- 调用performTextFinderAction来执行查找操作
**App Delegate:**
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
self.textFinderController = [[NSTextFinder alloc] init];
self.webView = [[STEWebView alloc] initWithFrame:CGRectMake(0, 0, self.window.frame.size.width, 200)];
[[self.window contentView] addSubview:self.webView];
[self.textFinderController setClient:self.webView];
[self.textFinderController setFindBarContainer:self.webView.enclosingScrollView];
[[self.webView mainFrame] loadHTMLString:@"sample string" baseURL:NULL];
}
- (IBAction)performTextFinderAction:(id)sender {
[self.textFinderController performAction:[sender tag]];
}
**STEWebView**
@interface STEWebView : WebView <NSTextFinderClient>
@end
@implementation STEWebView
- (id)initWithFrame:(NSRect)frame
{
self = [super initWithFrame:frame];
if (self) {
}
return self;
}
- (void)drawRect:(NSRect)dirtyRect
{
// Drawing code here.
}
- (NSUInteger) stringLength {
return [[self stringByEvaluatingJavaScriptFromString:@"document.documentElement.textContent"] length];
}
- (NSString *)string {
return [self stringByEvaluatingJavaScriptFromString:@"document.documentElement.textContent"];
}
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要显示查找栏(与默认的查找面板相反),您只需使用该setUsesFindBar:方法即可。
在你的情况下,你会想要做(在你的applicationDidFinishLaunching:aNotification方法中):
[textFinderController setUsesFindBar:YES];
//Optionally, incremental searching is a nice feature
[textFinderController setIncrementalSearchingEnabled:YES];
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