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SpeakerAppDelegate.m

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+//
+//  SpeakerAppDelegate.m
+//  Speaker
+//
+//  Created by Jeena on 24.09.10.
+//  Copyright 2010 __MyCompanyName__. All rights reserved.
+//
+
+#import "SpeakerAppDelegate.h"
+
+@implementation SpeakerAppDelegate
+
+@synthesize window, textView;
+
+- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
+	// Insert code here to initialize your application 
+	synth = [[NSSpeechSynthesizer alloc] init];
+	oldRange = NSMakeRange(-1, -1);
+}
+
+-(IBAction)speakAction:(id)sender {
+
+	if ([synth isSpeaking]) {
+		
+		[synth pauseSpeakingAtBoundary:NSSpeechWordBoundary];
+		
+	} else {
+		NSRange range = [textView selectedRange];
+
+		if (range.location == [[[textView textStorage] string] length]) {
+			range.location = 0;
+			[textView setSelectedRange:NSMakeRange(0,0)];
+			[textView scrollRangeToVisible:NSMakeRange(0,0)];
+		}
+		
+		if (range.length != oldRange.length || range.location != oldRange.location) {
+			NSString *wholeText = [[textView textStorage] string];
+			NSString *text = nil;
+			
+			if (range.length > 0) { // selection
+				text = [wholeText substringWithRange:range];
+			} else { // only pointer
+				text = [wholeText substringWithRange:NSMakeRange(range.location, [wholeText length] - range.location)];
+			}
+			
+			[synth startSpeakingString:text];
+			
+			oldRange = range;
+
+		} else {
+
+			[synth continueSpeaking];
+			
+		}
+	}
+
+}
+
+@end