NSTextCieldView中的NSTextField [英] NSTextField in NSTableCellView

问题描述

我有一个基于视图的NSTableView与自定义NSTableCellView。这个自定义NSTableCellView有几个标签（NSTextField）。 NSTableCellView的整个UI是在IB中构建的。

I have a view based NSTableView with a custom NSTableCellView. This custom NSTableCellView has several labels (NSTextField). The whole UI of the NSTableCellView is built in IB.

NSTableCellView可以处于正常状态和处于选定状态。

The NSTableCellView can be in a normal state and in a selected state. In the normal state all text labels should be black, in the selected state they should be white.

如何管理这个标签？

推荐答案

可能最简单的方法是子类化NSTextField并覆盖你的子类中的drawRect：方法。在这里你可以确定是否包含你的NSTextField实例的NSTableCellView实例当前是通过使用这个代码（我用于一个NSOutlineView，但它也应该与NSTableView使用）选择：

Probably the easiest way to accomplish this would be to subclass NSTextField and to override the drawRect: method in your subclass. There you can determine whether the NSTableCellView instance containing your NSTextField instances is currently selected by using this code (which I use with a NSOutlineView, but it should also work with NSTableView):

BOOL selected = NO;
id tableView = [[[self superview] superview] superview];
if ([tableView isKindOfClass:[NSTableView class]]) {
    NSInteger row = [tableView selectedRow];
    if (row != -1) {
        id cellView = [tableView viewAtColumn:0 row:row makeIfNecessary:YES];
        if ([cellView isEqualTo:[self superview]]) selected = YES;
    }
}

然后绘制如下视图：

if (selected) {
    // set your color here
    // draw [self stringValue] here in [self bounds]
} else {
    // call [super drawRect]
}

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