168 lines
4.9 KiB
Objective-C
168 lines
4.9 KiB
Objective-C
/*
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* PDP-8/E Simulator
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*
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* Copyright © 1994-2015 Bernhard Baehr
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*
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* HelpMenuManager.m - Manager for Help menu items of plugins
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*
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* This file is part of PDP-8/E Simulator.
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*
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* PDP-8/E Simulator is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#import <Cocoa/Cocoa.h>
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#import "Utilities.h"
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#import "HelpMenuManager.h"
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#import "NSFileManager+Additions.h"
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@implementation HelpMenuManager
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+ (HelpMenuManager *) sharedHelpMenuManager
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{
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static HelpMenuManager *sharedHelpMenuManager;
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if (! sharedHelpMenuManager)
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sharedHelpMenuManager = [[self alloc] init];
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return sharedHelpMenuManager;
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}
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- (HelpMenuManager *) init
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{
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self = [super init];
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[[NSNotificationCenter defaultCenter] addObserver:self
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selector:@selector(notifyApplicationWillTerminate:)
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name:NSApplicationWillTerminateNotification object:nil];
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registeredHelpBookDomains = [[NSMutableArray alloc] initWithCapacity:10];
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return self;
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}
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- (void) unregisterHelpBookForDomain:(NSString *)domain
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// see http://lists.apple.com/archives/carbon-development/2003/Nov/msg00090.html
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{
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NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
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NSMutableDictionary *dict = [NSMutableDictionary dictionaryWithDictionary:
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[defaults persistentDomainForName:@"com.apple.help"]];
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[dict removeObjectForKey:domain];
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[defaults setPersistentDomain:dict forName:@"com.apple.help"];
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}
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- (void) notifyApplicationWillTerminate:(NSNotification *)notification
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{
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NSString *domain;
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NSEnumerator *enumerator = [registeredHelpBookDomains objectEnumerator];
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while ((domain = [enumerator nextObject]))
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[self unregisterHelpBookForDomain:domain];
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}
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- (NSString *) helpUrlForId:(NSString *)id
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// extract the URL of the help page from ~/Library/Preferences/com.apple.help.plist (Lion and better)
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// for Lion and Mountain Lion, the ID is the title of the help book
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// for Mavericks, the ID is the bundle identifier of the plugin containing the help book
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{
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NSArray *array;
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NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
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NSDictionary *dict = [defaults persistentDomainForName:@"com.apple.help"];
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dict = [dict valueForKey:@"RegisteredBooks"];
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NSEnumerator *enumerator = [dict objectEnumerator];
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while ((array = [enumerator nextObject])) {
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dict = [array objectAtIndex:0];
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if ([id isEqualToString:[dict objectForKey:@"id"]])
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return [NSString stringWithFormat:@"%@index.html", [dict objectForKey:@"url"]];
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}
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return nil;
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}
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- (void) openHelpUrl:(NSString *)url
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// open the HelpViewer.app via AppleScript with the "handle URL" command (Lion only)
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{
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NSString *source = [NSString stringWithFormat:
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@"tell app \"HelpViewer\"\nactivate\nhandle URL \"%@\"\nend tell", url];
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NSAppleScript *script = [[[NSAppleScript alloc] initWithSource:source] autorelease];
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NSDictionary *error = nil;
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[script executeAndReturnError:&error];
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if (error)
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NSLog (@"AppleScript error while opening HelpViewer: %@", error);
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}
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- (void) showHelp:(id)sender
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{
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NSString *title = [sender title];
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if (runningOnLionOrNewer())
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// Help book lookup does not work as before, don't know why.
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// We now use AppleScript to open HelpViewer with the URL of the help page.
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[self openHelpUrl:[self helpUrlForId:(runningOnMavericksOrNewer() ?
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[sender representedObject] : title)]];
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else
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AHGotoPage (title, NULL, NULL);
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}
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- (void) addHelpMenuItem:(NSString *)title id:(NSString *)id
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{
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NSMenu *helpMenu = [[[NSApp mainMenu] itemWithTitle:NSLocalizedString(@"Help", @"")] submenu];
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int n = [helpMenu numberOfItems];
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int i;
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for (i = 1; i < n; i++) {
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switch ([[[helpMenu itemAtIndex:i] title] compare:title]) {
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case NSOrderedSame :
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n = -1;
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break;
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case NSOrderedDescending :
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n = i;
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break;
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default :
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break;
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}
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}
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if (n > 0) {
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NSMenuItem *item = [helpMenu insertItemWithTitle:title action:@selector(showHelp:)
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keyEquivalent:@"" atIndex:n];
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[item setTarget:self];
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[item setRepresentedObject:id];
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}
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}
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- (void) addBundleHelp:(NSBundle *)bundle
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{
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FSRef fsRef;
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if ([[NSFileManager defaultManager] fsRef:&fsRef forPath:[bundle bundlePath]]) {
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[self unregisterHelpBookForDomain:[bundle bundleIdentifier]];
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if (AHRegisterHelpBook(&fsRef) == noErr) {
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[registeredHelpBookDomains addObject:[bundle bundleIdentifier]];
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NSString *bookTitle = [[bundle infoDictionary] objectForKey:@"CFBundleHelpBookName"];
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if (bookTitle)
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[self addHelpMenuItem:bookTitle id:[bundle bundleIdentifier]];
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}
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}
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}
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@end
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