Tanager

Sequence Diagram Specification

Version 3.11 – Elaboration Phase 3

Revision History

Date	Version	Description	Author
15 Aug, 2006	1.0 – Elaboration Phase 1	Initial Revision. Added Power On main success scenario diagram.	Bob Lavey
14 Sep, 2006	1.1 – Elaboration Phase 1	Added Power Off main success scenario diagram.	Bob Lavey
17 Oct, 2006	1.2 – Elaboration Phase 2	Added Download a Song main success scenario	Bob Lavey
03 Dec, 2006	2.0 – Elaboration Phase 2	Added Play Music and Pause Music scenario diagrams	Bob Lavey
22 Dec, 2006	3.0 – Elaboration Phase 3	Refactored menu system and added State Pattern, which caused changes in many scenario diagrams.	Bob Lavey
30 Dec, 2006	3.1 – Elaboration Phase 3	Added Enter Menus and Exit Menus scenario diagrams.	Bob Lavey
31 Dec, 2006	3.2 – Elaboration Phase 3	Added View Playlist scenario diagrams.	Bob Lavey
01 Jan, 2007	3.3 – Elaboration Phase 3	Added Stop Music scenario diagrams.	Bob Lavey
06 Jan, 2007	3.4 – Elaboration Phase 3	Modified Download a Song scenario diagram to add support for saving/retrieving the last known downloaded song’s path.	Bob Lavey
06 Jan, 2007	3.5 – Elaboration Phase 3	Added View Playlist scenario diagrams.	Bob Lavey
12 Jan, 2007	3.6 – Elaboration Phase 3	Updated nearly all of the scenario diagrams to split the application layer from the UI layer. Included UI scenario diagrams in section 3.	Bob Lavey
13 Jan, 2007	3.7 – Elaboration Phase 3	Added Delete Song scenario diagrams.	Bob Lavey
14 Jan, 2007	3.8 – Elaboration Phase 3	Modified Play Song 2.4.2 scenario diagram to add volume setting.	Bob Lavey
15 Jan, 2007	3.9 – Elaboration Phase 3	Added Volume Adjustments scenario diagrams.	Bob Lavey
19 Jan 2007	3.10 – Elaboration Phase 3	Updated based on Dr. Leavens’ review. Removed the system from the Enter Menus and Exit Menus scenario diagrams, since they’re UI use cases.	Bob Lavey
20 Jan 2007	3.11 – Elaboration Phase 3	Updated based on Dr. Leavens’ review. Modified scenario diagrams whose first message was not from the top left corner.	Bob Lavey

Table of Contents

1. Introduction. 6

1.1. Purpose 6

1.2. Scope 6

1.3. Definitions, Acronyms, and Abbreviations 6

1.4. References 6

1.5. Overview 6

2. Sequence Diagrams. 7

2.1. Power On 7

2.1.1. Music Listener Tells the System to Power On 7

2.1.2. System State Initializes to a Default State 9

2.1.3. Music Player Writes Song Collection 9

2.2. Power Off 10

2.2.1. Music Listener Tells the System to Power Off 10

2.3. Select Playlist Order 11

2.4. Play Music 11

2.4.1. Music Listener Tells the System to Play 11

2.4.2. Play Song 13

2.4.3. Song Starts Playing 15

2.4.4. Update Playing Song 17

2.4.5. Playing Song Ends 19

2.5. Pause Music 21

2.5.1. Music Listener Tells the System to Pause 21

2.5.2. Song is Paused 23

2.6. Stop Music 25

2.6.1. Music Listener Tells the System to Stop 25

2.6.2. Song is Stopped 27

2.7. Skip to the Next Song 29

2.8. Restart the Current Song 29

2.9. Skip to the Previous Song 29

2.10. Volume Adjustments 29

2.10.1. Music Player Gets the System Volume 29

2.10.2. Music Player Sets the System Volume 29

2.11. Download a Song 31

2.11.1. Playlist Administrator Tells the System to Download a Song 31

2.12. Delete a Song 31

2.12.1. Playlist Administrator Retrieves the Playlist From the System 31

2.12.2. Playlist Administrator Tells the System to Delete a Song 31

2.13. View Playlist 33

2.13.1. Playlist Administrator Retrieves the Playlist From the System 33

3. UI Sequence Diagrams. 33

3.1. Power On 33

3.1.1. UI Displays Initializing Message 33

3.1.2. UI Displays Ready Message 34

3.2. Power Off 35

3.2.1. User Presses the Power Button 35

3.3. Select Playlist Order 36

3.4. Play Music 36

3.4.1. User Presses Play Button 36

3.4.2. Update UI With Playing Song 37

3.5. Pause Music 38

3.5.1. User Presses Pause Button 38

3.5.2. Update UI With Paused Song 39

3.6. Stop Music 40

3.6.1. User Presses Stop Button 40

3.7. Skip to the Next Song 41

3.8. Restart the Current Song 41

3.9. Skip to the Previous Song 41

3.10. Volume Adjustments 41

3.10.1. User Presses Up Button 41

3.10.2. User Presses Down Button 42

3.11. Download a Song 43

3.11.1. User Selects Download a Song From the Main Menu 43

3.12. Delete a Song 45

3.12.1. User Selects Delete Song from the Main Menu 45

3.12.2. User Selects Song to Delete 45

3.13. View Playlist 46

3.13.1. User Selects View Playlist from the Main Menu 46

3.13.2. Create Playlist Viewer 48

3.13.3. Display Playlist Viewer Pane 50

3.13.4. User Presses Left Button to Return to the Main Menu 52

3.13.5. Move to Previous Pane 52

3.14. Enter Menus 54

3.14.1. User Presses Menu Button 54

3.14.2. Enter Menus 54

3.15. Exit Menus 56

3.15.1. User Presses Menu Button 56

3.15.2. Exit Menus 56

Sequence Diagram Specification

1. Introduction

1.1. Purpose

This document provides the detailed Sequence Diagrams for the Tanager project. Sequence Diagrams will be generated for all main success scenarios, frequently-used scenarios, and complex scenarios. The section numbering for the Sequence Diagrams will match that used in the Tanager System Sequence Diagram Specification and the Tanager Use Case Specification. This will make it easier for the reader to match the Sequence Diagrams with the SSDs and the Use Cases.