1 files changed, 116 insertions, 0 deletions
diff --git a/Liaison/PluginManager.m b/Liaison/PluginManager.m
new file mode 100644
index 0000000..319dd20
--- /dev/null
+++ b/Liaison/PluginManager.m
@@ -0,0 +1,116 @@
+//
+//  PluginManager.m
+//  Liaison
+//
+//  Created by Brian Cully on Thu May 15 2003.
+//  Copyright (c) 2003 Brian Cully. All rights reserved.
+//
+
+#import "PluginManager.h"
+
+@implementation PluginManager
+static PluginManager *defaultManager = nil;
++ (PluginManager *)defaultManager
+{
+    if (defaultManager == nil)
+        defaultManager = [[self alloc] init];
+    return defaultManager;
+}
+
+- (id)init
+{
+    self = [super init];
+
+    theFileStorePlugins = [[NSMutableArray alloc] init];
+    theBrowserPlugins = [[NSMutableArray alloc] init];
+    theInspectorPlugins = [[NSMutableArray alloc] init];
+
+    [self scanForPlugins];
+
+    return self;
+}
+
+- (void)dealloc
+{
+    [theFileStorePlugins release];
+    [theBrowserPlugins release];
+    [theInspectorPlugins release];
+
+    [super dealloc];
+}
+
+- (void)activatePluginAtPath: (NSString *)aPath
+{
+    NSBundle *pluginBundle;
+
+    pluginBundle = [NSBundle bundleWithPath: aPath];
+    if (pluginBundle != nil) {
+        NSDictionary *pluginDict;
+        NSString *classString;
+
+        pluginDict = [pluginBundle infoDictionary];
+        classString = [pluginDict objectForKey: @"NSPrincipalClass"];
+        if (classString != nil) {
+            Class pluginClass;
+
+            pluginClass = NSClassFromString(classString);
+            if (pluginClass == nil) {
+                id plugin;
+                
+                pluginClass = [pluginBundle principalClass];
+                plugin = [[[pluginClass alloc] init] autorelease];
+                if ([pluginClass conformsToProtocol:@protocol(LiFileStorePlugin)]) {
+                    [pluginClass setBundle: pluginBundle];
+                    [theFileStorePlugins addObject: plugin];
+                }
+                if ([pluginClass conformsToProtocol:@protocol(LiBrowserPlugin)]) {
+                    [pluginClass setBundle: pluginBundle];
+                    [theBrowserPlugins addObject: plugin];
+                }
+                if ([pluginClass conformsToProtocol:@protocol(LiInspectorPlugin)]) {
+                    [pluginClass setBundle: pluginBundle];
+                    [theInspectorPlugins addObject: plugin];
+                }
+            }
+        }
+    }
+    return;
+}
+
+- (void)scanForPlugins
+{
+    NSString *appLocation;
+
+    appLocation = [[NSBundle mainBundle] builtInPlugInsPath];
+    if (appLocation) {
+        NSEnumerator *pluginEnum;
+        NSString *pluginPath;
+
+        pluginEnum = [[NSBundle pathsForResourcesOfType: @"liaisonplugin"
+                                            inDirectory: appLocation] objectEnumerator];
+        while ((pluginPath = [pluginEnum nextObject]) != nil) {
+            [self activatePluginAtPath: pluginPath];
+        }
+    }
+}
+@synthesize theBrowserPlugins;
+@synthesize theFileStorePlugins;
+@synthesize theInspectorPlugins;
+@end
+
+@implementation PluginManager (Accessors)
+- (NSArray *)fileStorePlugins
+{
+    return theFileStorePlugins;
+}
+
+- (NSArray *)browserPlugins
+{
+    return theBrowserPlugins;
+}
+
+- (NSArray *)inspectorPlugins
+{
+    return theInspectorPlugins;
+}
+@end