检查 Cocoa Document Based 应用程序中保存是否成功

发布于 2024-11-04 07:51:51 字数 491 浏览 0 评论 0原文

我有一个基于 Cocoa 文档的图片编辑应用程序。像往常一样，我的应用程序有 File ->保存菜单和文件 ->另存为菜单。

文件-> Save 菜单链接到 saveDocument：在 NSDocument 子类

File -> 中另存为菜单链接到 saveDocumentAs: 在 NSDocument 子类中

在这两种情况下，在成功保存时，我想向用户显示一个 NSAlert 表，说明保存已成功，并且此表还向用户提供将文档上传到的选项Facebook 等。

我如何知道文档已成功保存？

我知道如果是文件 ->另存为我可以创建一个新的操作方法 mySaveDocument: 并

saveDocumentWithDelegate:didSaveSelector:contextInfo:

从 mySaveDocument: 调用，但是我应该为 File -> 做什么？另存为？

原文

I have a Cocoa document based picture editing application. As usual, my application has both File -> Save menu and File -> Save As menu.

File -> Save menu is linked to saveDocument: in NSDocument subclass

File -> Save As menu is linked to saveDocumentAs: in NSDocument subclass

In both cases, on a successful save, I want to present a NSAlert sheet to user saying that the save was successful and this sheet also presents the user with an option to upload the document to Facebook etc.

How do I know, that the document got saved succesfully?

I understand that in case of File -> Save As I can create a new action method mySaveDocument: and invoke

saveDocumentWithDelegate:didSaveSelector:contextInfo:

from mySaveDocument: but what should I do for File -> Save As ?

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

幸福还没到 2024-11-11 07:51:51

在您的 NSDocument 子类中，重写：

- (BOOL)saveToURL:(NSURL *)absoluteURL
           ofType:(NSString *)typeName
 forSaveOperation:(NSSaveOperationType)saveOperation
            error:(NSError **)outError
{
    BOOL success = [super saveToURL:absoluteURL
                             ofType:typeName
                   forSaveOperation:saveOperation
                              error:outError];

    if (success) {
        …
    }

    return success;
}

每当保存文档时都会调用此方法。

有关保存文档时发生的情况的更多信息，请阅读基于文档的应用程序概述文档的文档架构页面中的消息流。

In your NSDocument subclass, override:

- (BOOL)saveToURL:(NSURL *)absoluteURL
           ofType:(NSString *)typeName
 forSaveOperation:(NSSaveOperationType)saveOperation
            error:(NSError **)outError
{
    BOOL success = [super saveToURL:absoluteURL
                             ofType:typeName
                   forSaveOperation:saveOperation
                              error:outError];

    if (success) {
        …
    }

    return success;
}

This method is called whenever a document is saved.

For more information on what happens when a document is saved, read the Message Flow in the Document Architecture page of the Document-Based Applications Overview document.

回复收藏 0 原文

~没有更多了~