Bloc PatternにおけるBloc分割の方針と実践例 / Division plan and practical example in bloc pattern

Flutter Meetup Tokyo #12

1. ,B[VLJ
   :BNBHVDIJ
   
   ZBNBSL[
   'MVUUFS
   .FFUVQ
   
    #MPD
   1BUUFSOʹ͓͚Δ#MPD෼ׂͷํ਑ͱ࣮ફྫ (MPCBM
   #MPD
   
   -PDBM
   #MPD
   
   $PNQPOFOU
   #MPD
   
   5FNQMBUF
   #MPD
2. !ZBNBSL[
   
   ,B[VLJ
   :BNBHVDIJ 4FSWFS
   
   .PCJMF
   "QQ
   &OHJOFFS
   !)PVTNBSU
   JOD
3. ࿩͢͜ͱ
   ෼ 'MVUUFSͰ։ൃ͢Δʹ͋ͨͬͯར༻ͨ͠#MPD
   1BUUFSOʹ͓͚Δɺ
   ࣮૷ύλʔϯͷಛ௃ͱ෼ྨɺͦͯ͠#MPDͷ෼ׂͰܾΊͨํ਑Λ঺հ͠·͢
4. ࿩ͷ୊ࡐ
   
   Χ΢ϧ ɾ݄த०ʹ'MVUUFS੡ͷΞϓϦΛϦϦʔε
   ϦϓϨΠε
   
   ɾ։ൃظؒ͸ि
   ɾ#MPD
   1BUUFSOͱ3Y%BSUΛ࠾༻
   ɾ࡞ΒΕͨ#MPDͷ਺͸ݸ
   ɾϦϓϨΠεͷ࿩͸OPUFʹॻ͖·ͨ͠
5. ɾ݄த०ʹ'MVUUFS੡ͷΞϓϦΛϦϦʔε
   ϦϓϨΠε
   
   ɾ։ൃظؒ͸ि
   ɾ#MPD
   1BUUFSOͱ3Y%BSUΛ࠾༻
   ɾ࡞ΒΕͨ#MPDͷ਺͸ݸ
   ɾϦϓϨΠεͷ࿩͸OPUFʹॻ͖·ͨ͠ ࿩ͷ୊ࡐ
   
   Χ΢ϧ ɾ࡞ΒΕͨ#MPDͷ਺͸ݸ ଟ͍ʁ
   গͳ͍
   
   ͜ͷݸͷ੗Έ෼͚ͱಛ௃͕ࠓճͷ࿩ͷओ୊Ͱ͢
6. #MPD
   1BUUFSOΛద༻ͨ͜͠ͱͰݟ͑ͨ
   ͭ
   ͷ෼ׂํ਑
7. 
   ΞϓϦέʔγϣϯશମʹؔΘΔॲཧΛͭʹ·ͱΊΔ
   
   εΫϦʔϯ͚ͩͰར༻͢ΔॲཧΛͭʹ·ͱΊΔ
   
   ίϯϙʔωϯτͰར༻͢ΔॲཧΛͭʹ·ͱΊΔ
   
   ڞ௨Ͱར༻͢ΔॲཧΛͭʹ·ͱΊΔ #MPD
   1BUUFSOΛద༻ͨ͜͠ͱͰݟ͑ͨͭͷ෼ׂํ਑
8. 
   ΞϓϦέʔγϣϯશମʹؔΘΔॲཧΛͭʹ·ͱΊΔ
   
   εΫϦʔϯ͚ͩͰར༻͢ΔॲཧΛͭʹ·ͱΊΔ
   
   ίϯϙʔωϯτͰར༻͢ΔॲཧΛͭʹ·ͱΊΔ
   
   ڞ௨Ͱར༻͢ΔॲཧΛͭʹ·ͱΊΔ #MPD
   1BUUFSOΛద༻ͨ͜͠ͱͰݟ͑ͨͭͷ෼ׂํ਑ 
   ΞϓϦέʔγϣϯશମʹ
   
   εΫϦʔϯ͚ͩͰ
   
   ίϯϙʔωϯτͰ
   
   ڞ௨Ͱ ํ਑ͷҧ͍͸είʔϓͷ޿͞
9. 
   ΞϓϦέʔγϣϯશମʹؔΘΔॲཧΛͭʹ·ͱΊΔ
   
   εΫϦʔϯ͚ͩͰར༻͢ΔॲཧΛͭʹ·ͱΊΔ
   
   ίϯϙʔωϯτͰར༻͢ΔॲཧΛͭʹ·ͱΊΔ
   
   ڞ௨Ͱར༻͢ΔॲཧΛͭʹ·ͱΊΔ #MPD
   1BUUFSOΛద༻ͨ͜͠ͱͰݟ͑ͨͭͷ෼ׂํ਑ ͳͥɺ͜ͷ੗Έ෼͚͕ྑ͍ͷ͔ʁ
10. ͳͥɺ͜ͷ੗Έ෼͚͕ྑ͍ͷ͔ʁ
    ͭͷओͳཧ༝  ΞϓϦɺεΫϦʔϯɺίϯϙʔωϯτͱ͍͏6*ߏ଄Λ࣠ʹॲཧ͕·ͱ·ΔͨΊɺ ߏ଄͕୯७ͰΘ͔Γ΍͘͢ͳΔ
    ϑΝΠϧ਺͸૿͑΍͍͕͢ɺϑΝΠϧ͋ͨΓͷίʔυྔ͸ݮΔ
     είʔϓͷൣғ͕໌֬ʹఆ·ͬͨ#MPDΛ࡞ΔͨΊɺ#MPDࣗମ͕ૄ݁߹ʹͳΔɻ ݁Ռͱͯ͠ɺอकੑ͕ߴ͘ͳΓɺಡΈ΍͍͢ɺཧղ͠΍͍͢ɺมߋ͠΍͍͢ͱ͍ͬ ͨঢ়گʹͳΔ #MPDͷ࣮૷ࣗମ͕ߏ଄Խ͞ΕΔ͜ͱʹΑΓɺอकੑ্͕͕Δ
11. (MPCBM
    #MPD
    
    -PDBM
    #MPD
    
    $PNQPOFOU
    #MPD
    
    5FNQMBUF
    #MPD ෼ׂํ਑ͷఆٛʹΑͬͯੜ·Εͨɺ#MPDͷ෼ྨ
12. (MPCBM
    #MPD
    ɾΞϓϦ୯ҐͰɺ޿͍ൣғʹؔΘΔॲཧΛ·ͱΊΔ
    FY
    ೝূॲཧ
    ΠϕϯτετϦʔϜΛଞ#MPDʹ఻೻͢Δॲཧ
    
    -PDBM
    #MPD
    ɾεΫϦʔϯ୯ҐͰɺݶΒΕͨڱ͍ൣғʹؔΘΔॲཧΛ·ͱΊΔ
    FY
    ඳը͢Δσʔλͷऔಘॲཧ
    ϦϩʔυͳͲͷը໘୯ҐͰߦΘΕΔॲཧ
    $PNQPOFOU
    #MPD
    ɾίϯϙʔωϯτ୯ҐͰɺݶΒΕͨ෦෼ʹؔΘΔॲཧΛ·ͱΊΔ
    FY
    ϢʔβʔΞΫγϣϯ͕ൃੜ͢Δॲཧ ͓ؾʹೖΓ
    ࡟আ
    5FNQMBUF
    #MPD
    ɾڞ௨ͷॲཧ୯ҐͰɺݶΒΕͨڱ͍ൣғʹؔΘΔॲཧΛ·ͱΊΔ
    FY
    ೝূॲཧ
    ྨࣅը໘ͷྨࣅॲཧ ෼ׂํ਑ͷఆٛʹΑͬͯੜ·Εͨɺ#MPDͷ෼ྨ
13. (MPCBM
    #MPD
    ɾΞϓϦ୯ҐͰɺ޿͍ൣғʹؔΘΔॲཧΛ·ͱΊΔ
    FY
    ೝূॲཧ
    ΠϕϯτετϦʔϜΛଞ#MPDʹ఻೻͢Δॲཧ
    
    -PDBM
    #MPD
    ɾεΫϦʔϯ୯ҐͰɺݶΒΕͨڱ͍ൣғʹؔΘΔॲཧΛ·ͱΊΔ
    FY
    ඳը͢Δσʔλͷऔಘॲཧ
    ϦϩʔυͳͲͷը໘୯ҐͰߦΘΕΔॲཧ
    $PNQPOFOU
    #MPD
    ɾίϯϙʔωϯτ୯ҐͰɺݶΒΕͨ෦෼ʹؔΘΔॲཧΛ·ͱΊΔ
    FY
    ϢʔβʔΞΫγϣϯ͕ൃੜ͢Δॲཧ ͓ؾʹೖΓ
    ࡟আ
    5FNQMBUF
    #MPD
    ɾڞ௨ͷॲཧ୯ҐͰɺݶΒΕͨڱ͍ൣғʹؔΘΔॲཧΛ·ͱΊΔ
    FY
    ೝূॲཧ
    ྨࣅը໘ͷྨࣅॲཧ ෼ׂํ਑ͷఆٛʹΑͬͯੜ·Εͨɺ#MPDͷ෼ྨ Χ΢ϧΞϓϦͰͷ#MPDΛ෼ྨ͝ͱʹৼΓ෼͚Δͱ    
14. (MPCBM
    #MPD ΞϓϦ୯ҐͰ޿͍ൣғʹؔΘΔॲཧΛ·ͱΊΔ "QQ 4DSFFO 4DSFFO 4DSFFO 4DSFFO #MPD
15. ͓ؾʹೖΓը໘ ҟͳΔը໘ͷڞ௨ͷॲཧ πʔϧνοϓ Λɺ
    ಉҰͷ(MPCBM
    #MPDΛࢀর੍ͯ͠ޚ͍ͯ͠Δ (MPCBM
    #MPD ϗʔϜը໘ πʔϧνοϓͷදࣔ৚݅Λ੍ޚ͢Δ
    #MPDΛڞ௨Ͱࢀর
16. "QQ 4DSFFO 4DSFFO 4DSFFO 4DSFFO #MPD εΫϦʔϯ୯ҐͰݶΒΕͨڱ͍ൣғʹؔΘΔॲཧΛ·ͱΊΔ -PDBM
    #MPD
17. ϩάΠϯը໘ ɾαΠϯΠϯॲཧ
    ɾϩάΠϯॲཧ
    ɾ(PPHMFϩάΠϯॲཧ
    ɾ'BDFCPPLϩάΠϯॲཧ
    ɾϝʔϧΞυϨεͷόϦσʔτॲཧ
    ɾύεϫʔυͷόϦσʔτॲཧ
    ɾύεϫʔυͷද੍ࣔޚॲཧ ಛఆͷը໘ͷΈͰར༻͢Δॲཧ ϩάΠϯϩάΞ΢τ Λ੍ޚ͢Δ -PDBM
    #MPD
18. $PNQPOFOU
    #MPD ίϯϙʔωϯτ୯ҐͰ෦෼తʹؔΘΔॲཧΛ·ͱΊΔ 4DSFFO $PNQPOFOU $PNQPOFOU $PNQPOFOU $PNQPOFOU #MPD
19. ͓ؾʹೖΓը໘ ϗʔϜը໘ $PNQPOFOU
    #MPD ҰݟҟͳΔ6*ߏ଄ Χʔυܕ
    ϦετΞΠςϜܕ ʹݟ͑Δ
20. $PNQPOFOU
    #MPD $POE$BSE#MPD
    Λ࠶ར༻͍ͯ͠Δ ͔͠͠ɺഎޙͰར༻͍ͯ͠Δ#MPD͸ಉҰͷ΋ͷ
    ڞ௨ॲཧͷ࠶ར༻ ϗʔϜը໘ ͓ؾʹೖΓը໘
21. 5FNQMBUF
    #MPD 4DSFFO 5NQ
    #MPD #MPD #MPD 4DSFFO 4DSFFO ڞ௨ར༻͢Δॲཧ୯ҐͰڱ͍ൣғʹؔΘΔॲཧΛ·ͱΊΔ ܧঝ֦ͯ͠ு ϓϨʔϯʹར༻
22. 8FC7JFXͱͯ͠ͷجຊػೳ͸ಉ͡ͳͷͰɺಉҰͷ#MPDΛར༻͢Δ͕ɺ
    ֦ுػೳ͕ཉ͍͠৔߹ʹɺ#MPDࣗମΛܧঝͯ͠࠶ར༻ͭͭ͠ػೳ௥Ճ͢Δ #MPDΛܧঝ͠ɺ
    ػೳ֦ு͍ͯ͠Δ 1MBJOͳ#MPDΛ
    ͦͷ··ར༻͍ͯ͠Δ 5FNQMBUF
    #MPD ࣋ͪࠐΈը໘ αʔϏε֓ཁը໘
23. ΞϓϦέʔγϣϯશମʹؔΘΔॲཧΛͭʹ·ͱΊΔ
    εΫϦʔϯ͚ͩͰར༻͢ΔॲཧΛͭʹ·ͱΊΔ
    ίϯϙʔωϯτͰར༻͢ΔॲཧΛͭʹ·ͱΊΔ
    ڞ௨ར༻͢ΔॲཧΛͭʹ·ͱΊΔ #MPD
    1BUUFSOΛద༻ͨ͜͠ͱͰݟ͑ͨͭͷ෼ׂํ਑
24. l࡞ΒΕͨ#MPDͷ਺͸ݸz
    ଟ͍
    গͳ͍ʁ
    
25. l࡞ΒΕͨ#MPDͷ਺͸ݸz
    ଟ͍
    গͳ͍ʁ
    ݸਓతʹ͸ɺ͜Μͳ΋ͷ͔ͳͱ͍͏ײ͡ɻ
    ࠓͷͱ͜Ζ։ൃӡ༻తʹ͸ಛʹෆ౎߹Λײͯ͡ͳ͍Ͱ͕͢ɺ
    ΋͔ͨ͠͠Βকདྷతʹɺ՝୊ʹײ͡Δ͜ͱ͕ग़Δ͔΋ʜ
26. ·ͱΊ ɾҰॏʹ#MPD
    1BUUFSOͱݴ͑Ͳɺѻ͍ํ͸༷ʑଘࡏ͢Δ
    ɾ(MPCBM
    -PDBM
    $PNQPOFOU
    5FNQMBUF
    ͦΕͧΕͷ࢖͍ํΛݟۃΊͯѻ͏
    ɾείʔϓͷ໌֬Խɺߏ଄ԽʹΑΓɺอकੑͷߴ͍ΞϓϦέʔγϣϯ։ൃ͕ՄೳʹͳΔ #MPD
    1BUUFSOࣗମͷద༻Λԣͷߏ଄Խ 6*ͱϩδοΫͷ෼཭ ͩͱ͢ΔͳΒɺ #MPDͷ࣮૷ύλʔϯΛద༻͢Δ͜ͱ͸ɺॎͷߏ଄Խ είʔϓʹΑΔϩδοΫ෼཭
27. ͝੩ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ