在基于视图的NSOutlineView中为NSTextField代理事件？ [英] Delegate events for NSTextField in a view-based NSOutlineView?

问题描述

我有一个完美的功能视图为基础的 NSOutlineView 与我的项目中正确的设置数据源。现在我想允许用户更改某些条目。所以我在IB可编辑的 NSTextField 中。对于基于单元格的 NSOutlineView ，可以使用委托方法 outlineView：setObjectValue：forTableColumn：byItem：但是它不可用对于基于视图的 NSOutlineView ，如 NSOutlineViewData 协议的头文件中所述：

/ *基于视图的OutlineView：此方法不适用。 （$）

（void）outlineView：（NSOutlineView *）outlineView setObjectValue：（id）对象forTableColumn：（NSTableColumn *）tableColumn byItem：（id）item ;

所以我搜索了另一个委托方法，发现 outlineView：shouldEditTableColumn：item：。但是，此委托方法不会被触发。可能是因为我没有编辑一个单元格。

所以我的问题是：有没有其他的方式来注意，一行更改，而不是每个 NSTextField ？

解决方案

好吧，似乎苹果希望我们使用委托方法每个 NSTextField 如这里：

此方法适用于基于单元格的表视图，不能与基于视图的表视图一起使用。相反，目标/动作用于视图单元格中的每个项目。

所以目前还没有其他方法可以做到这一点。 >

I have a flawless functioning view-based NSOutlineView with a proper set-up datasource in my project. Now I want to allow the user to change certain entries. So I made the NSTextField in the IB editable. For a cell-based NSOutlineView you can use the delegate method outlineView:setObjectValue:forTableColumn:byItem: however it's not available for a view-based NSOutlineView as stated in the header file for the NSOutlineViewData protocol:

/* View Based OutlineView: This method is not applicable. */

(void)outlineView:(NSOutlineView *)outlineView setObjectValue:(id)object forTableColumn:(NSTableColumn *)tableColumn byItem:(id)item;

So I searched for another delegate method and found outlineView:shouldEditTableColumn:item:. However this delegate method doesn't get fired. Probably because I'm not editing a cell.

So my question is: Is there any other way to notice when a row changed than having a delegate for each NSTextField?

解决方案

Well, it seems like Apple wants us to use the delegate methods of each NSTextField as stated here:

This method is intended for use with cell-based table views, it must not be used with view-based table views. Instead target/action is used for each item in the view cell.

So there's currently no other way to do this.

这篇关于在基于视图的NSOutlineView中为NSTextField代理事件？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！