Question

我的应用程序提供全球服务。我想用command-alt-key组合安装服务。我现在做的事情不是很容易出错，而且很难调试，因为我们没有看到发生了什么：

inside Info.plist:
 <key>NSServices</key>
 <array>
  <dict>
   <key>NSSendTypes</key>
   <array>
    <string></string>
   </array>
   <key>NSReturnTypes</key>
   <array>
    <string></string>
   </array>
   <key>NSMenuItem</key>
   <dict>
    <key>default</key>
    <string>Go To Window in ${PRODUCT_NAME}</string>
   </dict>
   <key>NSMessage</key>
   <string>bringZFToForegroundZoomOut</string>
   <key>NSPortName</key>
   <string>com.raskinformac.${PRODUCT_NAME:identifier}</string>
  </dict>
 </array>

并在代码中：

CFStringRef serviceStatusName = (CFStringRef)[NSString stringWithFormat:@"%@ - %@ - %@", appIdentifier, appName, methodNameForService];
CFStringRef serviceStatusRoot =  CFSTR("NSServicesStatus");
CFPropertyListRef pbsAllServices = (CFPropertyListRef) CFMakeCollectable ( CFPreferencesCopyAppValue(serviceStatusRoot, CFSTR("pbs")) );
// the user did not configure any custom services
BOOL otherServicesDefined = pbsAllServices != NULL;
BOOL ourServiceDefined = NO;
if ( otherServicesDefined ) {
    ourServiceDefined = NULL != CFDictionaryGetValue((CFDictionaryRef)pbsAllServices, serviceStatusName);
}

NSUpdateDynamicServices();
NSMutableDictionary *pbsAllServicesNew = nil;
if (otherServicesDefined) {
    pbsAllServicesNew = [NSMutableDictionary dictionaryWithDictionary:(NSDictionary*)pbsAllServices];
} else {
   pbsAllServicesNew = [NSMutableDictionary dictionaryWithCapacity:1];
}

NSDictionary *serviceStatus = [NSDictionary dictionaryWithObjectsAndKeys:
                               (id)kCFBooleanTrue, @"enabled_context_menu", 
                               (id)kCFBooleanTrue, @"enabled_services_menu", 
                               @"@~r", @"key_equivalent", nil];
[pbsAllServicesNew setObject:serviceStatus forKey:(NSString*)serviceStatusName];
CFPreferencesSetAppValue (
                          serviceStatusRoot,
                          (CFPropertyListRef) pbsAllServicesNew,
                          CFSTR("pbs"));
Boolean result = CFPreferencesAppSynchronize(CFSTR("pbs"));
if (result) {
    NSUpdateDynamicServices();
    JLog(@"successfully installed our alt-command-R service");
} else {
    ALog(@"couldn't install our alt-command-R service");
}

并更改服务：

// once installed, its's a bit tricky to set new ones (works only in RELEASE somehow?)
// quit finder
// open "~/Library/Preferences/pbs.plist" and remove ch.ana.Zoom - Reveal Window in Zoom - bringZFToForegroundZoomOut inside NSServicesStatus and save
// start app
// /System/Library/CoreServices/pbs -dump_pboard (to see if it hat actually done what we wanted, might be empty)
// /System/Library/CoreServices/pbs  (to add the new services)
// /System/Library/CoreServices/pbs -dump_pboard  (see new linking)
// and then /System/Library/CoreServices/Finder.app/Contents/MacOS/Finder  -NSDebugServices MY.APP.IDENTIFIER  to restart finder

所以我的问题是：是否有更简单的方法来使用cmd-option-key启用服务？如果是的话，我很乐意在我的软件中实现它。

Answer 1

您可以尝试使用'〜'设置密钥等效字符串作为服务字典中NSKeyEquivalent的值。 Services Implementation Guide声称它必须是单个字符，但我认为值得尝试完整的密钥等效字符串。

请记住，与NSMenuItem一样，它必须包含在字典中：

<key>NSKeyEquivalent</key>
<dict>
    <key>default</key>
    <string>~r</string>
</dict>

（我省略了'@';如果没有它就行不通，你可以试试吧。）

如果确实有效，我建议filing a bug反对文档。

Apple可能希望所有服务都使用⌘-something或⇧⌘-something等效键，为菜单项和全局热键保留其他修饰符。所以，虽然我尝试了上述内容，但如果不起作用，我也不会感到惊讶。

Answer 2

<key>NSMenuItem</key>
       <dict>
        <key>default</key>
        <string>Go To Window in ${PRODUCT_NAME}</string>
       </dict>

并且serviceStatusName的中间组件必须完全相同。我改变了问题中的代码。

NSString *appServiceName = @"Go To Window in ${PRODUCT_NAME}"
CFStringRef serviceStatusName = (CFStringRef)[NSString stringWithFormat:@"%@ - %@ - %@", appIdentifier, appServiceName, methodNameForService];

使用Command Alt NSKeyEquivalent注册NSService

2 个答案: