NSTextView中的Xcode样式占位符

概述在 Xcode中,如果您键入< #Hello,Word#>在文本编辑器中,它会自动转换为淡蓝色的药丸形占位符,但在磁盘上,文本仍然与输入的内容完全相同.有谁知道使用NSTextView是否可以实现相同的效果？我有一些非常丑陋的文件路径必须保持原样,因此sphinx可以将我的文档组合在一起,但我希望在用户在我的自定义文本编辑器中查看文件时为其提供一些更具吸引力的东西. // This on disk 在 Xcode中,如果您键入< #Hello,Word#>在文本编辑器中,它会自动转换为淡蓝色的药丸形占位符,但在磁盘上,文本仍然与输入的内容完全相同.有谁知道使用NSTextVIEw是否可以实现相同的效果？我有一些非常丑陋的文件路径必须保持原样,因此sphinx可以将我的文档组合在一起,但我希望在用户在我的自定义文本编辑器中查看文件时为其提供一些更具吸引力的东西.

// This on disk (and in any other text editor).. image:: images/ssafs/sdfd-sdfsdg-ewfsdf.png// This shown to the user in my custom text editorImage of a golden eagle

解决方法 尽可能多地尝试将解释写为代码中的注释.我在这里做了什么.

>找到所有匹配的链接.. image :: images / ssafs / sdfd-sdfsdg-ewfsdf1.png与Regex并将它们添加到一个数组中.
>用[Image]字符串替换所有匹配的链接.. image :: images / ssafs / sdfd-sdfsdg-ewfsdf1.png
>找到所有[Image]字符串并使用NSMutableAttributedString作为链接进行格式化.

它会按照您的要求进行 *** 作,并且它会动态执行,您在数据库/文件中的源根本不会发生变化.

.H

#import <Cocoa/Cocoa.h>@interface AppDelegate : NSObject <NSApplicationDelegate,NSTextVIEwDelegate>@property (unsafe_unretained) IBOutlet NSTextVIEw *aTextVIEw;

.M

- (voID)applicationDIDFinishLaunching:(NSNotification *)aNotification {    //Your NSTextVIEw    [aTextVIEw setDelegate:(ID)self];    // The Context    Nsstring *string = @"Lorem ipsum dolor sit amet,consectetur adipiscing elit. Donec convallis .. image:: images/ssafs/sdfd-sdfsdg-ewfsdf1.png lacinia diam,in mattis quam egestas in. Nam gravida dolor adipiscing velit faucibus,vulputate facilisis diam facilisis. Duis ID magna nibh. Proin sed turpis aliquet .. image:: images/ssafs/sdfd-sdfsdg-ewfsdf2.png,posuere purus eget,condimentum nulla. Aenean erat odio,suscipit eu aliquet eget,porta in justo. Quisque sed sem dignissim,luctus .. image:: images/ssafs/sdfd-sdfsdg-ewfsdf3.png libero ut,congue libero. Curabitur tristique fermentum risus in fermentum.";    //Regex to find your links .. image:: images/ssafs/sdfd-sdfsdg-ewfsdf2.png    //You can / should improve Reges patter.    NSRegularExpression *regexPatternForFulllinks = [NSRegularExpression regularExpressionWithPattern:@"(\.\.\s(.*?\.png))"                                                                                              options:NSRegularExpressionCaseInsensitive error:nil];    //Here find all image links and add them into an Array    NSArray *arrayOfAllMatches = [regexPatternForFulllinks matchesInString:string options:0 range:NSMakeRange(0,string.length)];    NSMutableArray *links = [[NSMutableArray alloc] init];    for (NSTextCheckingResult *match in arrayOfAllMatches) {        [links addobject:[[string substringWithRange:match.range] stringByReplacingOccurrencesOfString:@".. image:: " withString:@"/"]];    }    //Replacing All your links with string: [Image]    Nsstring *modifIEdString = [regexPatternForFulllinks stringByReplacingMatchesInString:string                                                                                  options:0                                                                                    range:NSMakeRange(0,[string length])                                                                             withTemplate:@"[Image]"];    NSRegularExpression *regexPatternReplacelinksWithIMAGEStr = [NSRegularExpression regularExpressionWithPattern:@"\[image\]"                                                                                              options:NSRegularExpressionCaseInsensitive error:nil];    NSMutableAttributedString* attrString = [[NSMutableAttributedString alloc] initWithString:modifIEdString];    //Here,looking for all [Image] strings and add them link Attribute    NSArray *arrayOfAllMatchesImageText = [regexPatternReplacelinksWithIMAGEStr matchesInString:modifIEdString                                                                                        options:0                                                                                          range:NSMakeRange(0,modifIEdString.length)];    for (int i = 0; i < arrayOfAllMatchesImageText.count; i++) {        NSTextCheckingResult *checkingResult = [arrayOfAllMatchesImageText objectAtIndex:i];        [attrString beginEditing];        [attrString addAttribute:NSlinkAttributename value:[links objectAtIndex:i] range:checkingResult.range];        [attrString addAttribute:NSForegroundcolorAttributename value:[NScolor greencolor] range:checkingResult.range];        [attrString addAttribute:NSUnderlinestyleAttributename value:[NSNumber numberWithInt:0] range:checkingResult.range];        [attrString endEditing];    }    //Set NSTextVIEw Storage text...    [aTextVIEw.textStorage setAttributedString:attrString];}

NSTextVIEwDelegate：clickedOnlink用于处理链接点击.

//Open Given links with PrevIEw App - NSTextVIEwDelegate - (BOol)textVIEw:(NSTextVIEw *)aTextVIEw clickedOnlink:(ID)link atIndex:(NSUInteger)charIndex {    [[NSWorkspace shareDWorkspace] openfile:link withApplication:@"PrevIEw"];    NSLog(@"%@",link);    return YES;}

您可以在图像上看到最终结果.如果您愿意,也可以为链接提供背景颜色.

NSTextVIEw设置也很重要.

更新：

只需弄清楚这可以做得更优雅,效率更高(更快).

- (voID)applicationDIDFinishLaunching:(NSNotification *)aNotification {    //Your NSTextVIEw    [aTextVIEw setDelegate:(ID)self];    // The Context    Nsstring *string = @"Lorem ipsum dolor sit amet,string.length)];    __block NSMutableAttributedString* attrString = [[NSMutableAttributedString alloc] initWithString:string];    [arrayOfAllMatches enumerateObjectsWithOptions:NSEnumerationReverse usingBlock:^(ID obj,NSUInteger IDx,BOol *stop) {        NSTextCheckingResult *match = [arrayOfAllMatches objectAtIndex:IDx];        Nsstring *linkValue = [[string substringWithRange:match.range] stringByReplacingOccurrencesOfString:@".. image:: " withString:@"/"];        NSDictionary *linkAttributes = @{NSForegroundcolorAttributename: [NScolor greencolor],NSUnderlinestyleAttributename: [NSNumber numberWithInt:0],NSlinkAttributename:linkValue};        NSMutableAttributedString *tempAttrString = [[NSMutableAttributedString alloc] initWithString:@"[Image]" attributes:linkAttributes];        [attrString beginEditing];        [attrString replaceCharactersInRange:match.range withAttributedString:tempAttrString];        [attrString endEditing];    }];    [aTextVIEw.textStorage setAttributedString:attrString];}

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