#import "AppDelegate.h"

@interface AppDelegate ()

/// 頂部狀態(tài)欄按鈕
@property (nonatomic, strong) NSStatusItem *statusBarItem;

// 自定義的窗口控制器
//@property (nonatomic, strong) NSWindowController *mainWindowController;

@end

@implementation AppDelegate

/*
 啟動順序：
 [AppDelegate applicationWillFinishLaunching:]
 [AppDelegate applicationWillBecomeActive:]
 [AppDelegate applicationDidBecomeActive:]
 [AppDelegate applicationWillUpdate:]
 [AppDelegate applicationDidUpdate:]
 [AppDelegate applicationDidFinishLaunching:]
 [AppDelegate applicationWillUpdate:]，[AppDelegate applicationDidUpdate:]   // 多次觸發(fā)
 
 掛起（不會掛起進程）
 [AppDelegate applicationWillResignActive:]
 [AppDelegate applicationDidResignActive:]
 激活
 [AppDelegate applicationWillBecomeActive:]
 [AppDelegate applicationDidBecomeActive:]
 [AppDelegate applicationWillUpdate:]，[AppDelegate applicationDidUpdate:]   // 多次觸發(fā)
 */

- (void)applicationWillFinishLaunching:(NSNotification *)notification
{
    // 設置屏幕頂部狀態(tài)欄按鈕
    [self initStatusBarItem];
}

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
    // 全局鎖定淺色外觀，在不打算適配深色外觀時用到
    if (@available(macOS 10.14, *)) {
        [NSApplication sharedApplication].appearance = [NSAppearance appearanceNamed:NSAppearanceNameAqua];
    }
    /* 自定義顯示的窗口，需要先在Main.storyboard里把"Window Controller"控件的"Is Inital Controller"選項移除，然后自定義NSWindowController實例，NSWindowController實例化詳情參考《macOS - NSWindowController》
    NSStoryboard *storyboard                = [NSStoryboard storyboardWithName:@"Custom" bundle:[NSBundle mainBundle]];
    NSWindowController *windowController    = [storyboard instantiateInitialController];
    //[windowController.window makeMainWindow]; // 需要NSWindow子類化實現-[NSWindow canBecomeMainWindow]并返回YES
    [windowController showWindow:nil];
    self.mainWindowController               = windowController;
     */
}

#pragma mark 屏幕頂部狀態(tài)欄按鈕，一般用于激活窗口，如果要上架App Store，就必須加這個
- (void)initStatusBarItem
{
    NSStatusItem *item  = [[NSStatusBar systemStatusBar] statusItemWithLength:NSSquareStatusItemLength];
    self.statusBarItem  = item;
    item.button.action  = @selector(statusBarItemClicked:);
    item.button.target  = self;
    item.button.toolTip = [[NSBundle mainBundle].infoDictionary valueForKey:(__bridge NSString *)kCFBundleNameKey];
    item.button.imageScaling = NSImageScaleNone;
    /*
     圖片建議大小：16pt × 16pt
     圖片建議設置為模板（Assets.xcassets圖片屬性Renders As改為Template Image，或NSImage.template = YES）
     */
    item.button.image   = [NSImage imageNamed:NSImageNameIconViewTemplate];
}

- (void)statusBarItemClicked:(NSStatusItem *)sender
{
    NSApplication *app = [NSApplication sharedApplication];
    if (app.isHidden) {
        [app unhide:sender];
    }
    if (app.isActive == NO) {
        // 激活窗口，否則窗口會出現無法響應事件的問題
        [app activateIgnoringOtherApps:YES];
        [[NSRunningApplication currentApplication] activateWithOptions:NSApplicationActivateAllWindows];
    }
    // 建議指定窗口前置
    NSWindow *window = [self anyWindow];
    [window makeKeyAndOrderFront:nil];
}

- (NSWindow *)anyWindow
{
    //return self.mainWindowController.window;
    //return [NSApplication sharedApplication].mainWindow;
    for (NSWindow *window in [NSApplication sharedApplication].windows) {
        if (window != self.statusBarItem.button.window) {
            return window;
        }
    }
    return nil;
}

AppDelegate - Status Bar Item.gif

#pragma mark 為程序塢（dock）添加菜單
- (nullable NSMenu *)applicationDockMenu:(NSApplication *)sender
{
    NSMenu *menu            = [[NSMenu alloc] initWithTitle:@""];
    NSMenuItem *firstItem   = [menu addItemWithTitle:@"First Dock Menu Item"
                                              action:@selector(dockMenuItemClicked:)
                                       keyEquivalent:@""];
    firstItem.enabled       = YES;
    firstItem.target        = self;
    
    NSMenuItem *secondItem  = [menu addItemWithTitle:@"Second Dock Menu Item"
                                              action:@selector(dockMenuItemClicked:)
                                       keyEquivalent:@""];
    secondItem.enabled      = YES;
    secondItem.target       = self;
    return menu;
}

- (void)dockMenuItemClicked:(NSMenuItem *)sender
{
    NSLog(@"%@ Clicked",sender.title);
}

#pragma mark 程序塢（dock）上的圖標被點擊了
- (BOOL)applicationShouldHandleReopen:(NSApplication *)sender hasVisibleWindows:(BOOL)flag
{
    if (flag) {
        return YES;
    }
    // 建議指定窗口前置
    [[self anyWindow] makeKeyAndOrderFront:nil];
    return YES;
}

AppDelegate - Dock Menu.png

#pragma mark 應用程序將要退出，一般在提示重要數據未保存時使用
- (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender
{
    /* 需要在info.plist里加上這個，否則只會執(zhí)行一次或不執(zhí)行
     <key>NSSupportsSuddenTermination</key>
     <false/>
     */
    NSAlert *alert              = [NSAlert new];
    alert.messageText           = @"Application should terminate";
    alert.alertStyle            = NSAlertStyleCritical;
    [alert addButtonWithTitle:@"Quit"].tag      = NSModalResponseOK;
    [alert addButtonWithTitle:@"Cancel"].tag    = NSModalResponseCancel;
    [alert beginSheetModalForWindow:[self anyWindow] completionHandler:^(NSModalResponse returnCode) {
        BOOL quit = returnCode == NSModalResponseOK;
        [[NSApplication sharedApplication] replyToApplicationShouldTerminate:quit];
    }];
    return NSTerminateLater;
    /*
     NSModalResponse response    = [alert runModal];
     return response == NSModalResponseOK ? NSTerminateNow : NSTerminateCancel;
     */
}

#pragma mark 應用程序將要退出，清理緩存和關閉某些功能時用到
- (void)applicationWillTerminate:(NSNotification *)aNotification {
    /* 需要在info.plist里加上這個，否則不會執(zhí)行
     <key>NSSupportsSuddenTermination</key>
     <false/>
     */
    NSLog(@"Application will terminate...");
}

AppDelegate - App Should Terminate.gif

#pragma mark 其他方法
- (void)applicationWillBecomeActive:(NSNotification *)notification
{
    // 應用程序將要激活
}
- (void)applicationDidBecomeActive:(NSNotification *)notification
{
    // 應用程序已激活
}
- (void)applicationWillResignActive:(NSNotification *)notification
{
    // 應用程序將要掛起
}
- (void)applicationDidResignActive:(NSNotification *)notification
{
    // 應用程序已掛起
}
/*
- (void)applicationWillUpdate:(NSNotification *)notification
{
    // 應用程序被激活后，任何操作都會觸發(fā)此事件
}
- (void)applicationDidUpdate:(NSNotification *)notification
{
    // 應用程序被激活后，任何操作都會觸發(fā)此事件
}
- (void)applicationDidHide:(NSNotification *)notification
{
    // 應用程序已隱藏
}
- (void)applicationWillUnhide:(NSNotification *)notification
{
    // 應用程序將要取消隱藏
}
- (void)applicationDidUnhide:(NSNotification *)notification
{
    // 應用程序已取消隱藏
}
- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender
{
    // 所有窗口被關閉時退出程序，會觸發(fā)[AppDelegate applicationShouldTerminate:];
    return YES;
}
*/

@end