您可以實現這一點使用Objective-C運行。 NSSavePanel
正在使用NSNavNewFolderController
類來創建新文件夾對話框。
//
// PBSavePanel.h
// PBSavePanel
//
// Created by Parag on 28/02/13.
// Copyright 2013 __MyCompanyName__. All rights reserved.
//
#import <Cocoa/Cocoa.h>
@interface NSSavePanel (NewFolderButton)
-(void)setDefaultNewFolderName : (NSString *)name;// change default folder name
-(void)setIncludeNewFolderButton: (BOOL)value; // show/hide new folder button
@end
//
// PBSavePanel.m
// PBSavePanel
//
// Created by Parag on 28/02/13.
// Copyright 2013 __MyCompanyName__. All rights reserved.
//
#import "PBSavePanel.h"
#import <objc/runtime.h>
@implementation NSSavePanel (NewFolderButton)
static NSMutableString *mfolderName;
static BOOL shouldNotOverride;
-(void)setDefaultNewFolderName : (NSString *)name;
{
if (!shouldNotOverride) {
shouldNotOverride =YES;
[self overrideFunctions:NSClassFromString(@"NSNavNewFolderController") sourceFunction:@selector(_defaultNewFolderName) customClass:[self class] newFunction:@selector(_defaultNewFolderNameNew)];
}
if (mfolderName==nil) {
mfolderName = [[NSMutableString alloc] init];
}
[mfolderName setString:name];
}
-(void)setIncludeNewFolderButton: (BOOL)value;
{
[self _setIncludeNewFolderButton:value];
}
-(void) overrideFunctions:(Class)actualClass sourceFunction:(SEL)actualFunction customClass:(Class) customClass newFunction:(SEL)newFunction
{
NSAutoreleasePool *pool=[[NSAutoreleasePool alloc]init];
Method actualDefinitionInActualClass = class_getInstanceMethod(actualClass, actualFunction);
Method newDefinitionInCustomClass=class_getInstanceMethod(customClass, actualFunction);
const char* oldEncoding=method_getTypeEncoding(actualDefinitionInActualClass);
IMP oldImplementation=method_setImplementation(actualDefinitionInActualClass,method_getImplementation(newDefinitionInCustomClass));
class_addMethod(actualClass, newFunction, oldImplementation, oldEncoding);
class_addMethod(class_getSuperclass(actualClass), newFunction, oldImplementation, oldEncoding);
[pool drain];
}
-(NSString *)_defaultNewFolderName
{
return mfolderName;
}
-(void)dealloc
{
if (mfolderName) {
[mfolderName release];
}
[super dealloc];
}
@end
輸出
NSSavePanel *panel = [NSSavePanel savePanel];
[panel setDefaultNewFolderName:@"Parag"];
NSInteger result = [panel runModal];
if (result == NSFileHandlingPanelOKButton) {
//NSArray *urls = [panel URLs];
[panel orderOut:nil];
}
我不認爲你可以沒有子。爲什麼你需要從_Open_面板創建一個文件夾?通常你只能通過_Save_面板來做到這一點。 – 2013-02-27 05:22:45
@JoshCaswell:Anand要求用戶選擇一個文件夾,例如在Web瀏覽器中,您可以選擇一個下載文件夾。在這種情況下,有一個新的文件夾按鈕是有意義的。 – JWWalker 2013-08-26 17:25:02