NSSearchField类别菜单状态

Question

我有一个NSSearchField控件，在该控件中，当用户单击左边的箭头时，我要显示几个类别，它们将作为菜单出现。在阅读了苹果的文档之后，我有了一些想法。下面是我的代码。

// .h
@interface AppDelegate : NSObject {
    IBOutlet NSSearchField  *searchField;
}

// .m
- (void)awakeFromNib {    
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(windowDidBecomeKey:) name:NSWindowDidBecomeKeyNotification object:[self window]];
    [window setContentBorderThickness:22.0 forEdge:NSMinYEdge];

    NSMenu *cellMenu = [[NSMenu alloc] initWithTitle:NSLocalizedString(@"Search Menu",@"Search Menu title")];
    NSMenuItem *item;
    item = [[NSMenuItem alloc] initWithTitle:@"Title" action:@selector(setSearchCategoryFrom:) keyEquivalent:@""];
    [item setTarget:self];
    [item setTag:1];
    [cellMenu insertItem:item atIndex:0];

    item = [[NSMenuItem alloc] initWithTitle:@"Username" action:@selector(setSearchCategoryFrom:) keyEquivalent:@""];
    [item setTarget:self];
    [item setTag:2];
    [cellMenu insertItem:item atIndex:1];
    id searchCell = [searchField cell];
    [searchCell setSearchMenuTemplate:cellMenu];
}

- (IBAction)setSearchCategoryFrom:(NSMenuItem *)menuItem {
    if ([menuItem tag] == 0) {

    }
    else {

    }
}

下面的截图显示了结果。现在，我需要将选择的状态设置为1，无论他们选择哪种状态，这样就会出现一个复选标记。我该怎么做？

谢谢你的帮助。

​

​

Answer 1

下列各点应能发挥作用。

// .h
@interface AppDelegate : NSObject {
    IBOutlet NSSearchField  *searchField;
    NSMenu *searchMenu;
}

// .m
@implementation AppDelegate {
    NSInteger lastSearchSelection;
}

- (void)awakeFromNib {            
    NSMenu *cellMenu = [[NSMenu alloc] initWithTitle:NSLocalizedString(@"Search Menu",@"Search Menu title")];
    NSMenuItem *item;
    item = [[NSMenuItem alloc] initWithTitle:@"Title" action:@selector(setSearchCategoryFrom:) keyEquivalent:@""];
    [item setTarget:self];
    [item setTag:1];
    [cellMenu insertItem:item atIndex:0];

    item = [[NSMenuItem alloc] initWithTitle:@"Username" action:@selector(setSearchCategoryFrom:) keyEquivalent:@""];
    [item setTarget:self];
    [item setTag:2];
    [cellMenu insertItem:item atIndex:1];
    id searchCell = [searchField cell];
    [searchCell setSearchMenuTemplate:cellMenu];
}

- (IBAction)setSearchCategoryFrom:(NSMenuItem *)menuItem {
    [[[sender menu] itemWithTag:lastSearchSelection] setState:NSOffState];
    [sender setState: NSOnState];
    lastSearchSelection = [sender tag];
}

Answer 2

我要添加一个类别菜单(例如:搜索主题、正文或.)在我的NSSearchField里。我已经成功地设置了菜单，但是如果我尝试将菜单项设置为state，则会出现一个问题:NSOffState。当我选择一个菜单时，应该关闭前面选择的类别。这是代码：

- (IBAction) menu_selectNewFilter:(id) sender {

NSMenuItem *m = [searchMenu itemWithTag: selectedFilter];
[m setState: NSOffState];
NSLog(@"Disabled %@ %d",[m title],[m tag]);

NSLog(@"Activate %@ %d",[sender title],[sender tag]);
[sender setState: NSOnState];

selectedFilter = [sender tag];

}

- (IBAction)setSearchCategoryFrom:(NSMenuItem *)menuItem {
    [[[sender menu] itemWithTag:lastSearchSelection] setState:NSOffState];
    [sender setState: NSOnState];
    lastSearchSelection = [sender tag];
}