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adium / Source / ESiTunesPlugin.m

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/*
 * ESiTunesPlugin.m
 * Adium
 *
 * Created by Evan Schoenberg on 6/11/05.
 * Assigned to Kiel Gillard
 * 
 * Thanks to GrowlTunes from the Growl project for demonstrating how to receive notifications when 
 * the iTunes track changes.
 */

#import "ESiTunesPlugin.h"
#import <Adium/AIContentControllerProtocol.h>
#import <Adium/AIToolbarControllerProtocol.h>
#import "AIStatusController.h"
#import <Adium/AIMenuControllerProtocol.h>
#import <Adium/AIAccount.h>
#import <AIUtilities/AIAttributedStringAdditions.h>
#import <AIUtilities/AIToolbarUtilities.h>
#import <AIUtilities/AIImageAdditions.h>
#import <AIUtilities/MVMenuButton.h>
#import <AIUtilities/AIMenuAdditions.h>
#import <AIUtilities/AIWindowAdditions.h>
#import <AIUtilities/AIStringAdditions.h>
#import <Adium/AIHTMLDecoder.h>
#import <Adium/AIStatus.h>
#import <WebKit/WebKit.h>

#define ITUNES_MINIMUM_VERSION          4.6f
#define ITUNES_STATUS_ID                        -8000

#pragma mark -

#define PLAYER_STATE                            @"Player State"
#define KEY_PLAYING                                     @"Playing"
#define KEY_PAUSED                                      @"Paused"
#define KEY_STOPPED                                     @"Stopped"
#define CURRENT_TRACK_FORMAT_KEY        @"Current Track Format"
#define ITMS_SEARCH_URL                         @"itms://itunes.com/link?"
                                                                        //itms://phobos.apple.com/WebObjects/MZSearch.woa/wa/search?"
#pragma mark -

#define ALBUM_TRIGGER                           AILocalizedString(@"%_album","Trigger for the album of the currently playing iTunes song")
#define ARTIST_TRIGGER                          AILocalizedString(@"%_artist","Trigger for the artist of the currently playing iTunes song")
#define COMPOSER_TRIGGER                        AILocalizedString(@"%_composer","Trigger for the composer of the currently playing iTunes song")
#define GENRE_TRIGGER                           AILocalizedString(@"%_genre","Trigger for the genre of the currently playing iTunes song")
#define STATUS_TRIGGER                          AILocalizedString(@"%_status","Trigger for the genre of the currently playing iTunes song")
#define TRACK_TRIGGER                           AILocalizedString(@"%_track","Trigger for the name of the currently playing iTunes song")
#define YEAR_TRIGGER                            AILocalizedString(@"%_year","Trigger for the year of the currently playing iTunes song")
#define STORE_URL_TRIGGER                       AILocalizedString(@"%_iTMS","Trigger for an iTunes Music Store link to the currently playing iTunes song")
#define MUSIC_TRIGGER                           AILocalizedString(@"%_music","Command which triggers *is listening to %_track by %_artist*")
#define CURRENT_TRACK_TRIGGER           AILocalizedString(@"%_iTunes","Trigger for the song - artist of the currently playing iTunes song")

#define MUSICAL_NOTE                            [NSString stringWithUTF8String:"\342\231\253"]
#define CURRENT_ITUNES_TRACK            [NSString stringWithFormat:@"%@ iTunes", MUSICAL_NOTE]

#define TOOLBAR_LABEL                           AILocalizedString(@"iTunes","Label for iTunes toolbar menu item.")

#pragma mark -

#define ITUNES_TOOLBAR_ITEM                     @"iTunesItem"
#define INSERT_TRIGGERS_MENU            AILocalizedString(@"Insert iTunes Token", "Label used for edit and contextual menus of iTunes triggers")

#pragma mark -

@interface ESiTunesPlugin ()
- (NSMenuItem *)menuItemWithTitle:(NSString *)title action:(SEL)action representedObject:(id)representedObject kind:(KGiTunesPluginMenuItemKind)itemKind;
- (void)createiTunesCurrentTrackStatusState;
- (void)createiTunesToolbarItemWithPath:(NSString *)path;
- (void)createiTunesToolbarItemMenuItems:(NSMenu *)iTunesMenu;
- (void)createTriggersMenu;
- (void)filterAndInsertString:(NSString *)inString;
- (void)insertStringIntoMessageEntryView:(NSString *)inString;
- (void)insertAttributedStringIntoMessageEntryView:(NSAttributedString *)inString;
- (void)loadiTunesCurrentInfoViaApplescript;
@end

/*!
 * @class ESiTunesPlugin
 * @brief Fiiltering component to provide triggers which are replaced by information from the current iTunes track
 */
@implementation ESiTunesPlugin

#pragma mark -
#pragma mark Accessor Methods

/*!
 * @brief Is iTunes stopped?
 */
- (BOOL)iTunesIsStopped
{
        //Get the info if we don't already have it
        if (!iTunesCurrentInfo) [self loadiTunesCurrentInfoViaApplescript];

        return iTunesIsStopped;
}

/*!
 * @brief Set if iTunes is stopped
 */
- (void)setiTunesIsStopped:(BOOL)yesOrNo
{
        iTunesIsStopped = yesOrNo;
}

/*!
* @brief Is iTunes paused?
 */
- (BOOL)iTunesIsPaused
{
        //Get the info if we don't already have it
        if (!iTunesCurrentInfo) [self loadiTunesCurrentInfoViaApplescript];
        
        return iTunesIsPaused;
}

/*!
 * @brief Set if iTunes is paused
 */
- (void)setiTunesIsPaused:(BOOL)yesOrNo
{
  iTunesIsPaused = yesOrNo;
}


/*!
 * @brief Get current iTunes info dictionary
 */
- (NSDictionary *)iTunesCurrentInfo
{
        return iTunesCurrentInfo;
}

/*!
 * @brief Store local copy of iTunes information
 * 
 * Retains new information, requests immediate content update and lets the plugin know what iTunes is doing.
 */
- (void)setiTunesCurrentInfo:(NSDictionary *)newInfo
{
        if (newInfo != iTunesCurrentInfo) {
                [iTunesCurrentInfo release];
                NSMutableDictionary *mutableNewInfo = [newInfo mutableCopy];

                //If we get a stream title, use that as the track name
                if ([mutableNewInfo objectForKey:ITUNES_STREAM_TITLE] && [(NSString *)[mutableNewInfo objectForKey:ITUNES_STREAM_TITLE] length])
                        [mutableNewInfo setObject:[mutableNewInfo objectForKey:ITUNES_STREAM_TITLE]
                                                           forKey:ITUNES_NAME];

                NSEnumerator *enumerator = [newInfo keyEnumerator];
                NSString *key;
                while ((key = [enumerator nextObject])) {
                        //Some versions of iTunes may send numbers as numbers rather than strings. Change these to numbers for our use.
                        id value = [newInfo objectForKey:key];
                        if (![value isKindOfClass:[NSString class]]) {
                                if ([value respondsToSelector:@selector(stringValue)]) {
                                        [mutableNewInfo setObject:[value stringValue]
                                                                           forKey:key];
                                } else {
                                        //A future version might send some other data entirely.  Drop it rather than having non-strings in the dict.
                                        [mutableNewInfo removeObjectForKey:key];
                                }
                        }
                }

                iTunesCurrentInfo = mutableNewInfo;
                [self setiTunesIsStopped:[[iTunesCurrentInfo objectForKey:PLAYER_STATE] isEqualToString:KEY_STOPPED]];
                [self setiTunesIsPaused:[[iTunesCurrentInfo objectForKey:PLAYER_STATE] isEqualToString:KEY_PAUSED]];

        //Cancel any requests we had to fire updates.
        [[self class] cancelPreviousPerformRequestsWithTarget:self selector:@selector(fireUpdateiTunesInfo) object:nil];
        //fire an iTunes update in three seconds.
        [self performSelector:@selector(fireUpdateiTunesInfo) withObject:nil afterDelay:3.0];
        }
}

- (void)fireUpdateiTunesInfo
{
        /* First, note that the track changed; code elsewhere cares, promise. */
        [[NSNotificationCenter defaultCenter] postNotificationName:Adium_iTunesTrackChangedNotification object:iTunesCurrentInfo];

        /* Next, update any dynamic content which includes iTunes triggers, including the Now Playing status itself */
        [[NSNotificationCenter defaultCenter] postNotificationName:Adium_RequestImmediateDynamicContentUpdate object:nil];
}

#pragma mark -
#pragma mark Plugin Methods

/*!
 * @brief Install
 */
- (void)installPlugin
{
        NSDictionary    *slashMusicDict = nil;
        NSDictionary    *conditionalArtistTrackDict = nil;
        NSString                *currentITunesTrackFormat = nil;
        NSUserDefaults  *defaults = [NSUserDefaults standardUserDefaults];
        NSString                *itunesPath = [[NSWorkspace sharedWorkspace] absolutePathForAppBundleWithIdentifier:@"com.apple.iTunes"];

        iTunesCurrentInfo = nil;

        //Only install our items if a copy of iTunes which meets the minimum requirements is found
        if ([[[NSBundle bundleWithPath:itunesPath] objectForInfoDictionaryKey:@"CFBundleShortVersionString"] doubleValue] > ITUNES_MINIMUM_VERSION) {
                
                //Perform substitutions on outgoing content
                [adium.contentController registerContentFilter:self 
                                                                                                  ofType:AIFilterContent
                                                                                           direction:AIFilterOutgoing];
                
                [[NSDistributedNotificationCenter defaultCenter] addObserver:self
                                                                                                                        selector:@selector(iTunesUpdate:)
                                                                                                                                name:@"com.apple.iTunes.playerInfo"
                                                                                                                          object:nil];
                
                substitutionDict = [[NSDictionary alloc] initWithObjectsAndKeys:
                        ITUNES_ALBUM, ALBUM_TRIGGER,
                        ITUNES_ARTIST, ARTIST_TRIGGER,
                        ITUNES_COMPOSER, COMPOSER_TRIGGER,
                        ITUNES_GENRE, GENRE_TRIGGER,
                        ITUNES_PLAYER_STATE, STATUS_TRIGGER,
                        ITUNES_NAME, TRACK_TRIGGER,
                        ITUNES_YEAR, YEAR_TRIGGER,
                        ITUNES_STORE_URL, STORE_URL_TRIGGER,
                        nil];
                
                slashMusicDict = [[NSDictionary alloc] initWithObjectsAndKeys:
                        [NSString stringWithFormat:AILocalizedString(@"*is listening to %@ by %@*","Phrase sent in response to %_music.  The first %%@ is the track; the second %%@ is the artist."), TRACK_TRIGGER, ARTIST_TRIGGER],
                        KEY_PLAYING,
                        AILocalizedString(@"*is listening to nothing*","Phrase sent in response to %_music when nothing is playing."),
                        KEY_STOPPED,
                        nil];
                
                /* Provide flexibility with the %_iTunes substitution. By default, just store @"" for this key
                 * so the item is present in the plist for the adventurous to find... but still not hardcoded to a particular
                 * format.  This is done so that a default installation doesn't have its format broken if the locale switches...
                 * since the format specifiers are themselves localized.
                 */
                currentITunesTrackFormat = [defaults objectForKey:CURRENT_TRACK_FORMAT_KEY];
                if (!currentITunesTrackFormat) {
                        [defaults setObject:@"" forKey:CURRENT_TRACK_FORMAT_KEY];
                        currentITunesTrackFormat = @"";
                }
                
                if (![currentITunesTrackFormat length]) {
                        currentITunesTrackFormat  = [NSString stringWithFormat:@"%@ - %@", TRACK_TRIGGER, ARTIST_TRIGGER];
                }
                
                conditionalArtistTrackDict = [[NSDictionary alloc] initWithObjectsAndKeys:
                        currentITunesTrackFormat,
                        KEY_PLAYING,
                        @"",
                        KEY_STOPPED,
                        nil];
                
                phraseSubstitutionDict = [[NSDictionary alloc] initWithObjectsAndKeys:
                        slashMusicDict,
                        MUSIC_TRIGGER,
                        conditionalArtistTrackDict,
                        CURRENT_TRACK_TRIGGER,
                        nil];
                
                [slashMusicDict release];
                [conditionalArtistTrackDict release];
                
                //Create the "Current iTunes Track" status item
                [self createiTunesCurrentTrackStatusState];
                
                //Create the toolbar item
                [self createiTunesToolbarItemWithPath:itunesPath];
                
                //Create the Edit > Insert and contextual menus
                [self createTriggersMenu];
        }
}

/*!
 * @brief Uninstall
 */
- (void)uninstallPlugin
{
        [adium.contentController unregisterContentFilter:self];
}

#pragma mark -
#pragma mark AppleScript + iTunes methods

/*!
 * @brief Get current iTunes track info
 *
 * Execute an applescript located in the resources folder that obtains current iTunes track info and assembles the dictionary
 */
- (void)loadiTunesCurrentInfoViaApplescript
{
        /*
         * 1. get a url pointing to the script in the resources folder
         * 2. prepare the script for execution
         * 3. get results and create the dictionary based off it
         */
        
        //get the path
        NSString                                *path = [[NSBundle mainBundle] pathForResource:@"CurrentTunes" ofType:@"scpt"];
        NSURL                                   *pathURL = [NSURL fileURLWithPath:path];
        
        //create the script complete with an error dictionary
        NSDictionary                    *errors = [NSDictionary dictionary];
        NSAppleScript                   *playingScript = [[NSAppleScript alloc] initWithContentsOfURL:pathURL error:&errors];
        
        //execute the script and get the results as a string
    NSAppleEventDescriptor      *result = [playingScript executeAndReturnError:&errors];
        NSString                                *concatenatediTunesData = [result stringValue];

        //if the player was playing when the script was executed
        if (concatenatediTunesData && ![concatenatediTunesData isEqualToString:@"None"]) {
                
                //get the expected number of entries in the dictionary
                NSUInteger infoCount = [substitutionDict count];
                //get the values for the current iTunes song from the string
                NSArray * iTunesValues = [concatenatediTunesData componentsSeparatedByString:@",$!$,"];
                
                //if the two are properly matched (which they always will be, but just in case)
                if ([iTunesValues count] == infoCount) {
                        //create the dictionary
                        [self setiTunesCurrentInfo:[NSDictionary dictionaryWithObjects:iTunesValues
                                                                                                                                   forKeys:[NSArray arrayWithObjects:
                                                                                                                                                        ITUNES_ALBUM,
                                                                                                                                                        ITUNES_ARTIST,
                                                                                                                                                        ITUNES_COMPOSER,
                                                                                                                                                        ITUNES_GENRE,
                                                                                                                                                        ITUNES_PLAYER_STATE,
                                                                                                                                                        ITUNES_NAME,
                                                                                                                                                        ITUNES_YEAR,
                                                                                                                                                        ITUNES_STORE_URL,
                                                                                                                                                        nil]]];
                } else {
                        NSLog(@"iTunesValues was %@ (%lu items), but I was expecting %lu. Perhaps CurrentTunes is not updated to match ESiTunesPlugin?",
                                  iTunesValues, [iTunesValues count], infoCount);
                }
                
        } else {
                //create a dictionary saying that iTunes is stopped
                [self setiTunesCurrentInfo:[NSDictionary dictionaryWithObjectsAndKeys:KEY_STOPPED, PLAYER_STATE, nil]];
        }
        
        [playingScript release];
}

#pragma mark -
#pragma mark Status item creation

/*!
 * @brief Create an available status state
 *
 * Create a Status which uses the current iTunes track data as it's message
 */
- (void)createiTunesCurrentTrackStatusState
{
        //create an iTunes status of state "Available" with default available status settings
        AIStatus                   *currentiTunesStatusState = [[AIStatus statusOfType:AIAvailableStatusType] retain];
        
        //set status attributes
        NSAttributedString *trackAndArtist = [NSAttributedString stringWithString:CURRENT_TRACK_TRIGGER];
        [currentiTunesStatusState setStatusMessage:trackAndArtist];
        [currentiTunesStatusState setTitle:CURRENT_ITUNES_TRACK];
        [currentiTunesStatusState setMutabilityType:AISecondaryLockedStatusState];
        [currentiTunesStatusState setUniqueStatusID:[NSNumber numberWithInteger:ITUNES_STATUS_ID]];
        [currentiTunesStatusState setSpecialStatusType:AINowPlayingSpecialStatusType];

        //give it to the AIStatusController
        [adium.statusController addStatusState:currentiTunesStatusState];
        [currentiTunesStatusState release];
}

#pragma mark -
#pragma mark Filter Protocol methods

/*!
 * @brief Filter messages for keywords to replace
 *
 * Replace any iTunes triggers with the appropriate information
 */
- (NSAttributedString *)filterAttributedString:(NSAttributedString *)inAttributedString context:(id)context
{
    NSMutableAttributedString   *filteredMessage = nil;
        NSString                                        *stringMessage;
        
        //get the attributed string as a regular string so we can do string processing
        if ((stringMessage = [inAttributedString string])) {
                NSEnumerator    *enumerator;
                NSString                *trigger;
                BOOL                    addStoreLinkAsSubtext = NO;
                
                /* Replace the phrases with the string containing the triggers.
                 * For example, /music will become *is listening to %_track by %_artist*.
                 * This will then become the actual track information in the next while().
                 */
                enumerator = [phraseSubstitutionDict keyEnumerator];
                
                while ((trigger = [enumerator nextObject])) {
                        //search for phrase in the string that needs to be filtered
                        if (([stringMessage rangeOfString:trigger options:(NSLiteralSearch | NSCaseInsensitiveSearch)].location != NSNotFound)) {
                                NSDictionary    *replacementDict;
                                NSString                *replacement;
                                
                                //get the format for the current trigger
                                replacementDict = [phraseSubstitutionDict objectForKey:trigger];
                                                                
                                //replacement of phrase should reflect iTunes player state
                                if (![self iTunesIsStopped] && ![self iTunesIsPaused]) {
                                        replacement = [replacementDict objectForKey:KEY_PLAYING];
                                        
                                        /* If the trigger is the trigger used for the Current iTunes Track status, we'll want to add a subtext of the store link
                                         * so account code can send it out later on.
                                         */
                                        if ([trigger isEqualToString:CURRENT_TRACK_TRIGGER]) {
                                                addStoreLinkAsSubtext = YES;
                                        }

                                } else {
                                        replacement = [replacementDict objectForKey:KEY_STOPPED];                                       
                                }
                                
                                //create a attributedstring if it hasn't been created already
                                if (!filteredMessage) filteredMessage = [[inAttributedString mutableCopy] autorelease];
                                
                                //Perform the replacement
                                [filteredMessage replaceOccurrencesOfString:trigger
                                                                                                 withString:replacement
                                                                                                        options:(NSLiteralSearch | NSCaseInsensitiveSearch)
                                                                                                          range:NSMakeRange(0, [filteredMessage length])];
                        }
                }
                
                if (filteredMessage) {
                        //Update our string for the simple trigger replacement process so we can replace the %_ tokens
                        stringMessage = [filteredMessage string];
                }
                
                //Substitute simple triggers as appropriate
                enumerator = [substitutionDict keyEnumerator];
                while ((trigger = [enumerator nextObject])) {
                        
                        //Find if the current trigger is in the string
                        if (([stringMessage rangeOfString:trigger options:(NSLiteralSearch | NSCaseInsensitiveSearch)].location != NSNotFound)) {
                                NSString *replacement;
                                
                                //Get the info if we don't already have it
                                if (!iTunesCurrentInfo) [self loadiTunesCurrentInfoViaApplescript];

                                //Attempt to replace it with its proper value
                                if (!(replacement = [iTunesCurrentInfo objectForKey:[substitutionDict objectForKey:trigger]])) {
                                        //If no replacement is found, replace the trigger with an empty string
                                        replacement = @"";
                                }
                                
                                //if a mutable attributed string for the string to be filtered doesn't exist, create it. 
                                if (!filteredMessage) filteredMessage = [[inAttributedString mutableCopy] autorelease];
                                
                                //Replace the current trigger with the value we found above
                                [filteredMessage replaceOccurrencesOfString:trigger
                                                                                                 withString:replacement
                                                                                                        options:(NSLiteralSearch | NSCaseInsensitiveSearch)
                                                                                                          range:NSMakeRange(0, [filteredMessage length])];
                        }
                }
                
                if (addStoreLinkAsSubtext && filteredMessage) {
                        NSString *storeLinkForSubtext = [iTunesCurrentInfo objectForKey:[substitutionDict objectForKey:STORE_URL_TRIGGER]];
                        if (storeLinkForSubtext) {
                                [filteredMessage addAttribute:@"AIMessageSubtext"
                                                                                value:storeLinkForSubtext
                                                                                range:NSMakeRange(0, [filteredMessage length])];
                        }
                }
        }
                
        //Give back the processed string
        return (filteredMessage ? filteredMessage : inAttributedString);
}

/*!
 * @brief Filter priority
 *
 * Filter at default priority
 */
- (CGFloat)filterPriority
{
        return DEFAULT_FILTER_PRIORITY;
}

#pragma mark -
#pragma mark Notification Selector

/*!
 * @brief The iTunes song changed
 *
 * The accessor method caches the information and then requst an immediate update to dynamic content
 */
- (void)iTunesUpdate:(NSNotification *)aNotification
{
        NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

        NSDictionary *newInfo = [aNotification userInfo];
        [self setiTunesCurrentInfo:newInfo];
        
        [pool release];
}

#pragma mark -
#pragma mark Toolbar Item Methods

/*!
 * @brief Create the toolbar item
 *
 * Create toolbar item and it's menu
 */
- (void)createiTunesToolbarItemWithPath:(NSString *)iTunesPath
{
        NSMenu            *menu = [[NSMenu alloc] init];
        MVMenuButton  *button = [[MVMenuButton alloc] initWithFrame:NSMakeRect(0,0,32,32)];

        //configure the popup button and its menu
        [button setImage:[[NSWorkspace sharedWorkspace] iconForFile:iTunesPath]];
        [self createiTunesToolbarItemMenuItems:menu];

        NSToolbarItem * iTunesItem = [AIToolbarUtilities toolbarItemWithIdentifier:ITUNES_TOOLBAR_ITEM
                                                                                                                                                 label:TOOLBAR_LABEL
                                                                                                                                  paletteLabel:TOOLBAR_LABEL
                                                                                                                                           toolTip:AILocalizedString(@"Insert current iTunes track information.","Label for iTunes toolbar menu item.")
                                                                                                                                                target:self
                                                                                                                           settingSelector:@selector(setView:)
                                                                                                                                   itemContent:button
                                                                                                                                                action:NULL
                                                                                                                                                  menu:nil];
        //configure the toolbar and button for use
        [[iTunesItem view] setMenu:menu];
        [iTunesItem setMinSize:NSMakeSize(32,32)];
        [iTunesItem setMaxSize:NSMakeSize(32,32)];
        [button setToolbarItem:iTunesItem];
        
        //Add menu to toolbar item (for text mode)
        NSMenuItem      *mItem = [[[NSMenuItem allocWithZone:[NSMenu menuZone]] init] autorelease];
        [mItem setSubmenu:menu];
        [mItem setTitle:TOOLBAR_LABEL];
        [iTunesItem setMenuFormRepresentation:mItem];
        
        //give it to adium to use
        [adium.toolbarController registerToolbarItem:iTunesItem forToolbarType:@"TextEntry"];
        [button release];
        [menu release];
}

/*!
 * @brief Create the toolbar item's menu
 *
 * Populate a menu with menu items that will insert appropriate values of the currently playing iTunes song.
 */

- (void)createiTunesToolbarItemMenuItems:(NSMenu *)iTunesMenu
{       
        NSMenu *insertTrackSubmenu = [[NSMenu alloc] init];
        
        [iTunesMenu addItem:[self menuItemWithTitle:CURRENT_ITUNES_TRACK 
                                                                                 action:@selector(insertFilteredString:) 
                                                          representedObject:CURRENT_TRACK_TRIGGER
                                                                                   kind:ENABLED_IF_ITUNES_PLAYING]];
        [iTunesMenu addItem:[self menuItemWithTitle:MUSIC_TRIGGER
                                                                                 action:@selector(insertFilteredString:) 
                                                          representedObject:MUSIC_TRIGGER                                                                                  
                                                                                   kind:ENABLED_IF_ITUNES_PLAYING]];
        [iTunesMenu addItem:[NSMenuItem separatorItem]];
        
        //submenu of actions related to a track
        NSMenuItem *submenuRoot = [[NSMenuItem alloc] initWithTitle:AILocalizedString(@"Track Information","Submenu for iTunes toolbar item menu for inserting current track information.")
                                                                                                                 action:NULL
                                                                                                  keyEquivalent:@""];
        
        [insertTrackSubmenu addItem:[self menuItemWithTitle:AILocalizedString(@"Album","Insert Current iTunes track album toolbar menu item.") 
                                                                                                 action:@selector(insertFilteredString:)
                                                                          representedObject:ALBUM_TRIGGER
                                                                                                   kind:ENABLED_IF_ITUNES_PLAYING]];
        [insertTrackSubmenu addItem:[self menuItemWithTitle:AILocalizedString(@"Artist","Insert Current iTunes track artist toolbar menu item.") 
                                                                                                 action:@selector(insertFilteredString:) 
                                                                          representedObject:ARTIST_TRIGGER
                                                                                                   kind:ENABLED_IF_ITUNES_PLAYING]];
        [insertTrackSubmenu addItem:[self menuItemWithTitle:AILocalizedString(@"Composer","Insert Current iTunes track composer toolbar menu item.") 
                                                                                                 action:@selector(insertFilteredString:)
                                                                          representedObject:COMPOSER_TRIGGER
                                                                                                   kind:ENABLED_IF_ITUNES_PLAYING]];
        [insertTrackSubmenu addItem:[self menuItemWithTitle:AILocalizedString(@"Genre","Insert Current iTunes track genre toolbar menu item.") 
                                                                                                 action:@selector(insertFilteredString:)
                                                                          representedObject:GENRE_TRIGGER
                                                                                                   kind:ENABLED_IF_ITUNES_PLAYING]];
        [insertTrackSubmenu addItem:[self menuItemWithTitle:AILocalizedString(@"Name","Insert Current iTunes track name toolbar menu item.") 
                                                                                                 action:@selector(insertFilteredString:)
                                                                          representedObject:TRACK_TRIGGER
                                                                                                   kind:ENABLED_IF_ITUNES_PLAYING]];
        [insertTrackSubmenu addItem:[self menuItemWithTitle:AILocalizedString(@"Year","Insert Current iTunes track year toolbar menu item.") 
                                                                                                 action:@selector(insertFilteredString:)
                                                                          representedObject:YEAR_TRIGGER
                                                                                                   kind:ENABLED_IF_ITUNES_PLAYING]];
        
        [insertTrackSubmenu addItem:[self menuItemWithTitle:AILocalizedString(@"iTunes Music Store Link","Insert Current iTunes track store link toolbar menu item.") 
                                                                                                 action:@selector(insertiTMSLink)
                                                                          representedObject:nil
                                                                                                   kind:ENABLED_IF_ITUNES_PLAYING]];

        [iTunesMenu addItem:submenuRoot];
        [iTunesMenu setSubmenu:insertTrackSubmenu forItem:submenuRoot];
        [submenuRoot release];
        [insertTrackSubmenu release];
        [iTunesMenu addItem:[NSMenuItem separatorItem]];

        //this isn't implemented yet, need some advice on this one
        [iTunesMenu addItem:[self menuItemWithTitle:[AILocalizedString(@"Search Selection in Music Store","iTunes toolbar menu item title to search selection in iTMS.") stringByAppendingEllipsis]
                                                                                 action:@selector(gatherSelection)
                                                          representedObject:nil
                                                                                   kind:RESPONDER_IS_WEBVIEW]];
        [iTunesMenu addItem:[NSMenuItem separatorItem]];

        [iTunesMenu addItem:[self menuItemWithTitle:[AILocalizedString(@"Bring iTunes to Front","iTunes toolbar menu item title to make iTunes frontmost app.") stringByAppendingEllipsis]
                                                                                 action:@selector(bringiTunesToFront)
                                                          representedObject:nil
                                                                                   kind:ALWAYS_ENABLED]];
}

/*!
 * @brief Create a menu item
 *
 * create a menu item targeting this plugin. Determine if it should disable itself when firstResponder != [textView class].
 */
- (NSMenuItem *)menuItemWithTitle:(NSString *)title action:(SEL)action representedObject:(id)representedObject kind:(KGiTunesPluginMenuItemKind)itemKind
{
        NSMenuItem *item = [[NSMenuItem alloc] initWithTitle:title action:action keyEquivalent:@""];
        [item setTarget:self];
        [item setTag:itemKind];
        [item setRepresentedObject:representedObject];
        [item setEnabled:YES];

        return [item autorelease];
}

#pragma mark -
#pragma mark Toolbar Item actions

/*!
 * @brief Insert current song iTMS link
 *
 * Get the URL from the iTunesCurrentInfo dict or create a URL if one can't be found.
 */
- (void)insertiTMSLink
{
        NSMutableString         *url = [[NSMutableString alloc] init];
        NSString                        *urlLabel = nil;

        //get current information
        NSString                        *artist = [iTunesCurrentInfo objectForKey:[substitutionDict objectForKey:ARTIST_TRIGGER]];
        NSString                        *trackName = [iTunesCurrentInfo objectForKey:[substitutionDict objectForKey:TRACK_TRIGGER]];
        
        //see if we have a URL for us
        NSString                        *storeURL = [iTunesCurrentInfo objectForKey:[substitutionDict objectForKey:STORE_URL_TRIGGER]];
        if ([storeURL length]) {
                [url appendString:storeURL];
        }
        
        //if we have no url data from the iTunes notification to begin with - probably because we got the info using the applescript
        if (![url length]) {
                
                //if iTunes is playing or paused something
                if (![self iTunesIsStopped] || ![self iTunesIsPaused]) {
                        [url appendString:ITMS_SEARCH_URL];
                        
                        //if there is a name given to this song put it in the url
                        if ([trackName length]) {
                                [url appendFormat:@"n=%@", [trackName stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
                        } else {
                                trackName = @"";
                        }
                        
                        //if there is a name and an artist, we'll use both to refine our search
                        if ([artist length] && [trackName length]) {
                                //[url appendFormat:@"?artistTerm=%@", [artist stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
                                [url appendFormat:@"&an=%@", [artist stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
                                
                        } else if ([artist length]) {
                                //no proper track name but we have a decent artist name to include in the url
                                //[url appendFormat:@"artistTerm=%@", [trackName stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
                                [url appendFormat:@"an=%@", [trackName stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
                        } else {
                                artist = @"";
                        }
                }
        }
        
        //if something has been added to our search request, create a lovely label for it
        if (![url isEqualToString:ITMS_SEARCH_URL] && [url length]) {
                urlLabel = [[NSString alloc] initWithFormat:@"%@ - %@", trackName, artist];
        } else {
                [url release]; url = nil;
        }
        
        //if we have a url, give it to the user as a nice, formatted <a> tag
        if (url) {
                NSAttributedString *attributedLink = [[NSAttributedString alloc] initWithAttributedString:[AIHTMLDecoder decodeHTML:[NSString stringWithFormat:@"<A HREF=\"%@\">%@</A>", url, urlLabel]]];
                [self insertAttributedStringIntoMessageEntryView:attributedLink];
                [attributedLink release];
                [url release];
                [urlLabel release];
        } else {
                //the artist name and or the track name is literally @""
                NSBeep();
        }
}

/*!
 * @brief Filter and insert current iTunes song display into message entry
 *
 * Toolbar method. Take the trigger and filter it with real values
 *
 * @param sender An NSMenuItem whose representedObject is the appropriate trigger to filter
 */
- (void)insertFilteredString:(id)sender
{
        [self filterAndInsertString:[sender representedObject]];        
}

/*!
 * @brief Search iTMS for inputtted data
 *
 * Build the necessary url and execute it
 */
- (void)searchMusicStoreWithSelection:(NSString *)selectedText
{
        //Create a general search request
        NSString *url = [NSString stringWithFormat:@"itms://phobos.apple.com/WebObjects/MZSearch.woa/wa/search?term=%@", [selectedText stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
        [[NSWorkspace sharedWorkspace] openURL:[NSURL URLWithString:url]];
}


/*!
 * @brief Get the selection from the webmessageview
 *
 * Get the selected text in the messageview and run it thru the iTMS
 */
- (void)gatherSelection
{
        id responder = [[[NSApplication sharedApplication] keyWindow] firstResponder];
        [self searchMusicStoreWithSelection:[responder selectedString]];
}

/*!
 * @brief Bring iTunes to foreground
 */
- (void)bringiTunesToFront
{
        [[NSWorkspace sharedWorkspace] launchApplication:@"iTunes"];
}

#pragma mark -
#pragma mark Edit/Contextual menu item actions

/*!
 * @brief Insert triggers into message entry
 *
 * Used in the "Edit" and contextual menus.
 * @param sender An NSMenuItem whose representedObject is the appropriate trigger to insert
 */
- (void)insertUnfilteredString:(id)sender
{
        [self insertStringIntoMessageEntryView:[sender representedObject]];
}

#pragma mark -
#pragma mark Text Insertion methods

/*!
 * @brief Filter and Insert plain string
 *
 * Converts the string to an attributed string and filters it, then inserting it into the message entry view
 * Used by all the toolbar item actions.
 */

- (void)filterAndInsertString:(NSString *)inString
{
        id responder = [[[NSApplication sharedApplication] keyWindow] firstResponder];
        if (responder && [responder isKindOfClass:[NSTextView class]]) {
                NSAttributedString *attributedResult = [[NSAttributedString alloc] initWithString:inString
                                                                                                                                                           attributes:[(NSTextView *)responder typingAttributes]];
                [self insertAttributedStringIntoMessageEntryView:[self filterAttributedString:attributedResult context:nil]];
                [attributedResult release];
        }
}

/*!
 * @brief Insert raw string into message view
 *
 * Converts the string to an attributed string and inserts it into the message entry view.
 * Used with the insertUnfiltered... methods which are used by edit and contextual menus.
 */

- (void)insertStringIntoMessageEntryView:(NSString *)inString
{
        id responder = [[[NSApplication sharedApplication] keyWindow] firstResponder];
        if (responder && [responder isKindOfClass:[NSTextView class]]) {
                NSAttributedString *attributedResult = [[NSAttributedString alloc] initWithString:inString 
                                                                                                                                                           attributes:[(NSTextView *)responder typingAttributes]];
                [self insertAttributedStringIntoMessageEntryView:attributedResult];
                [attributedResult release];
        }
}

/*!
 * @brief Insert attributed string into message view
 *
 * Inserts an attributed string it into the message entry view.
 * Don't check to see if the responder is of class NSTextView because the validateMenuItem method checks.
 */

- (void)insertAttributedStringIntoMessageEntryView:(NSAttributedString *)inString
{
        NSResponder *textView = [[[NSApplication sharedApplication] keyWindow] firstResponder];
        [textView insertText:inString];
        
        if (![inString length]) {
                NSBeep();
        }
}

#pragma mark -
#pragma mark Edit/Contextual menu methods

/*!
 * @brief Create Edit and Contextual menus of iTunes triggers
 *
 * Build the menus for the iTunes triggers that autodisables when a first responder isn't a textView
 */

- (NSMenu *)menuOfTriggers
{
        NSMenu                  *triggersMenu = [[NSMenu alloc] init];
        NSEnumerator    *enumerator;
        NSString                *trigger;

        [triggersMenu addItem:[self menuItemWithTitle:CURRENT_TRACK_TRIGGER 
                                                                                   action:@selector(insertUnfilteredString:)
                                                                representedObject:CURRENT_TRACK_TRIGGER
                                                                                         kind:AUTODISABLES]];
        [triggersMenu addItem:[self menuItemWithTitle:MUSIC_TRIGGER
                                                                                   action:@selector(insertUnfilteredString:)
                                                                representedObject:MUSIC_TRIGGER
                                                                                         kind:AUTODISABLES]];

        
        [triggersMenu addItem:[NSMenuItem separatorItem]];
        
        //Simple triggers
        enumerator = [substitutionDict keyEnumerator];
        while ((trigger = [enumerator nextObject])) {
                [triggersMenu addItem:[self menuItemWithTitle:trigger 
                                                                                           action:@selector(insertUnfilteredString:) 
                                                                        representedObject:trigger
                                                                                                 kind:AUTODISABLES]];
        }
        
        return [triggersMenu autorelease];
}

/*!
 * @brief Create Edit and Contextual menus of iTunes triggers
 *
 * Users can then insert %_&lt;token name&gt; into any text view
 */
- (void)createTriggersMenu
{
        NSMenuItem      *menuItem = [[NSMenuItem alloc] initWithTitle:INSERT_TRIGGERS_MENU target:self action:NULL keyEquivalent:@""];
        NSMenu          *menuOfTriggers = [self menuOfTriggers];
        
        [menuItem setSubmenu:menuOfTriggers];
        [adium.menuController addMenuItem:menuItem toLocation:LOC_Edit_Additions];
        [menuItem release];
        
        menuItem = [[NSMenuItem alloc] initWithTitle:INSERT_TRIGGERS_MENU target:self action:NULL keyEquivalent:@""];
        [menuItem setSubmenu:[[menuOfTriggers copy] autorelease]];
        [adium.menuController addContextualMenuItem:menuItem toLocation:Context_TextView_Edit];
        [menuItem release];
}

/*!
 * @brief Configure accessibility of menu items
 *
 * Depending on whether the responder is a textview and if it should be enabled when itunes isn't playing
 */
- (BOOL)validateMenuItem:(NSMenuItem *)menuItem
{
        NSResponder                                     *responder = [[[NSApplication sharedApplication] keyWindow] firstResponder];
        KGiTunesPluginMenuItemKind      tag = [menuItem tag];
        BOOL                                            enable;

        //we only insert things into textviews
        if (responder && [responder isKindOfClass:[NSTextView class]]) {
                
                //some menu items are only enabled if itunes is playing something
                if ((([self iTunesIsStopped] || [self iTunesIsPaused]) && (tag == ENABLED_IF_ITUNES_PLAYING)) || (tag == RESPONDER_IS_WEBVIEW)) {
                        enable = NO;
                } else {
                        enable = [(NSTextView *)responder isEditable];
                }

        } else if (tag == RESPONDER_IS_WEBVIEW) {
                
                if ([responder respondsToSelector:@selector(selectedString)]) {
                        NSString        *selectedString = [(id)responder selectedString];
                        
                        if (selectedString && [selectedString length]) {
                                enable = YES;
                        } else {
                                enable = NO;
                        }

                } else {
                        enable = NO;                    
                }
                
        } else {
                // enable it if it is always supposed to be on, disable if otherwise
                enable = (tag == ALWAYS_ENABLED);
        }
        
        return enable;
}


#pragma mark -
#pragma mark Deallocation

- (void)dealloc
{
        //Remove self from notifications list
        [[NSDistributedNotificationCenter defaultCenter] removeObserver:self];
        
        //Release class variables
        if (iTunesCurrentInfo) [iTunesCurrentInfo release];
        if (substitutionDict) [substitutionDict release];
        if (phraseSubstitutionDict) [phraseSubstitutionDict release];
        
        [super dealloc];
}

@end