如何从单独的NIB显示工作表 [英] How to show sheet from separate NIB

问题描述

如何在一个单独的NIB中放置一个窗口，给它自己的NSWindowController，使它滑动成一个表？

这是一个典型的东西）

我试图在我的主窗口中显示一个自定义工作表（从父窗口的标题栏向下滑动的窗口）。我想做的是标准的，我想，但我找不到清楚的例子或解释如何做我想要的。

我试图do：

1. 我的应用程式委托拥有主视窗，其中有一个按钮可开启「设定」工作表。
   
2. 设置工作表：


• 位于单独的NIB中。




• 当用户点击设置时，我将尝试使用Apple的示例代码[1]。

   - （void）showCustomSheet：（NSWindow *）window 
 //用户要求查看自定义显示。显示它。 
 {
 if（！settingsSheet）
 //检查settingsSheet实例变量，以确保自定义工作表不存在。 
 [NSBundle loadNibNamed：@SettingsSheetowner：self]; 
 //但是这样做使设置表NOT nil？ 
 
 [NSApp beginSheet：settingsSheet 
 modalForWindow：window 
 modalDelegate：self 
 didEndSelector：@selector（didEndSheet：returnCode：contextInfo :) 
 contextInfo：nil ]; 
 
 //表格在这里。 
 
 //返回事件循环的处理
} 
  

请原谅以下简单而无数的问题：

• 当我呼叫时， loadNibName：owner：，我不希望 owner 为 self ，因为这使我的应用程序委托的 MyCustomSheet - 这是我的 SettingsWindowsController 应该是。但是，我不知道如何让 SettingsWindowsController 这个方法中的所有者。


• 如果我的工作表有Visible at launch ， loadNibName：owner：立即将窗口显示为正常窗口，而不是从主窗口中滑出的工作表。


• 如果我的工作表没有选中Visible at launch，则 beginSheet：modalForWindow：etc 会导致模态会话需要模态窗口。我很确定这是因为我使Nib的所有者 self （如我已经提到的）。


• 在示例代码中，我不知道名为@SettingsSheet的Nib如何与实例变量 settingsSheet 关联 - 但它们显然是 相关，因为代码检查第一： if（！settingsSheet）（我已经标记了评论 //但是这样做设置表NOT nil？感谢您耐心阅读所有这一切！
  h2_lin>解决方案
  
  

  1. 创建 SettingsWindowController 的实例，使用 initWithWindowNibName：

  
  

  2. 请参阅1

  
  

  3. 您的实例变量将可用于 SettingsWindowController

  
  

  


  How do I put a window in a separate NIB, give it its own NSWindowController, make it slide out as a sheet?

  (Is this a typical thing to do with sheets?)

  I am trying to show a custom sheet (a window that slides down from the title bar of the parent window) from my main window. What I'm trying to do is standard, I think, but I cannot find clear examples or explanations for how to do exactly what I want.

  What I am trying to do:

  1. My app delegate owns the main window, which has a button to open a "settings" sheet.
  2. The "settings" sheet:
  • is in a separate NIB.
  • has file owner set to class SettingsWindowController, which is subclass of NSWindowsController
  3. When user clicks "settings", I am trying to use Apple's [sample code][1]

  - (void)showCustomSheet: (NSWindow *)window
  // User has asked to see the custom display. Display it.
  {
      if (!settingsSheet) 
      //Check the settingsSheet instance variable to make sure the custom sheet does not already exist.
          [NSBundle loadNibNamed:@"SettingsSheet" owner: self];
          //BUT HOW DOES THIS MAKE settingsSheet NOT nil?
  
      [NSApp beginSheet: settingsSheet
              modalForWindow: window 
              modalDelegate: self 
              didEndSelector: @selector(didEndSheet:returnCode:contextInfo:) 
              contextInfo: nil]; 
  
      // Sheet is up here.
  
      // Return processing to the event loop
  } 
  

  Please excuse the following simplistic and numerous questions:

  • When I call, loadNibName:owner:, I don't want owner to be self, because that makes my app delegate the owner of the "MyCustomSheet" - that's what my SettingsWindowsController is supposed to be for. However, I don't know how make SettingsWindowsController the owner in this method.
  • If my sheet has "Visible at launch" checked, then loadNibName:owner: immediately displays the window as a normal window, not as a sheet that slides out from the main window.
  • If my sheet has "Visible at launch" not checked, then beginSheet:modalForWindow:etc causes "Modal session requires modal window". I'm pretty sure this is because I made the Nib's owner self (as I mentioned already).
  • In the sample code, I don't know how the Nib named @"SettingsSheet" is "associated" with the instance variable settingsSheet - but they apparently are related because the code checks first: if (!settingsSheet) (I've marked this with comment //BUT HOW DOES THIS MAKE settingsSheet NOT nil?)

  Thanks for your patience in reading all this!

  解决方案

  1. Create an instance of SettingsWindowController, use initWithWindowNibName:

  2. You don't want it visible at launch.

  3. See 1.

  4. Your instance variables will be available to SettingsWindowController

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