/src/org/ishafoundation/archives/transcript/components/generic/UnhandledChangesPopUpManager.as

http://transcriptstudio4isha.googlecode.com/ · ActionScript · 82 lines · 60 code · 4 blank · 18 comment · 17 complexity · 6087dcb654a3d4be7fe1d0ef927a717a MD5 · raw file 

    

  1. package org.ishafoundation.archives.transcript.components.generic

    2. 

  2. {

    3. 

  3. 	import mx.controls.Alert;

    4. 

  4. 	import mx.events.CloseEvent;

    5. 

  5. 	

    6. 

  6. 	/**

    7. 

  7. 	 * Convenience class for displaying unsaved changes popup and calling the appropriate functions

    8. 

  8. 	 */

    9. 

  9. 	public class UnhandledChangesPopUpManager

    10. 

  10. 	{

    11. 

  11. 		public static var DISPLAYED_NOW:Boolean = false;

    12. 

  12. 		

    13. 

  13. 		public function UnhandledChangesPopUpManager()

    14. 

  14. 		{

    15. 

  15. 		}

    16. 

  16. 		

    17. 

  17. 		/**

    18. 

  18. 		 * syncSaveChangesFunction()

    19. 

  19. 		 * nextFunction()

    20. 

  20. 		 * 

    21. 

  21. 		 * if unsavedChanges is false, then simply nextFunction() is called.

    22. 

  22. 		 */

    23. 

  23. 		public static function displayIfNecessaryUsingSyncFunc(unsavedChanges:Boolean, syncSaveChangesFunc:Function, nextFunction:Function):Boolean {

    24. 

  24. 			if (DISPLAYED_NOW) {

    25. 

  25. 				trace("Not displaying Alert because already displayed");

    26. 

  26. 				return false;

    27. 

  27. 			}

    28. 

  28. 			if (unsavedChanges) {

    29. 

  29. 				// check whether the users wants to save

    30. 

  30. 				DISPLAYED_NOW = true;

    31. 

  31. 				Alert.show("Do you want to commit changes?", "Uncommitted Changes", Alert.YES | Alert.NO | Alert.CANCEL, null, function (event:CloseEvent):void {

    32. 

  32. 					DISPLAYED_NOW = false;

    33. 

  33. 					if (event.detail==Alert.YES) {

    34. 

  34. 						syncSaveChangesFunc();

    35. 

  35. 						nextFunction();

    36. 

  36. 					}				

    37. 

  37. 					else if (event.detail==Alert.NO) {

    38. 

  38. 						nextFunction();

    39. 

  39. 					}

    40. 

  40. 					else if (event.detail==Alert.CANCEL) {

    41. 

  41. 						// do nothing

    42. 

  42. 					}

    43. 

  43. 					else {

    44. 

  44. 						throw new Error("Unexpected event type: " + event);

    45. 

  45. 					}

    46. 

  46. 				});

    47. 

  47. 			}

    48. 

  48. 			else {

    49. 

  49. 				nextFunction();

    50. 

  50. 			}

    51. 

  51. 			return true;

    52. 

  52. 		}

    53. 

  53. 		

    54. 

  54. 		/**

    55. 

  55. 		 * asyncSaveChangesFunction(nextFunction(), saveChangesFailureFunction(String))

    56. 

  56. 		 * 

    57. 

  57. 		 * if unsavedChanges is false, then simply nextFunction() is called.

    58. 

  58. 		 */

    59. 

  59. 		public static function displayIfNecessaryUsingAsyncFunc(unsavedChanges:Boolean, asyncSaveChangesFunction:Function, saveChangesFailureFunction:Function, nextFunction:Function):void {

    60. 

  60. 			if (unsavedChanges) {

    61. 

  61. 				// check whether the users wants to save

    62. 

  62. 				Alert.show("Do you want to save changes?", "Unsaved Changes", Alert.YES | Alert.NO | Alert.CANCEL, null, function (event:CloseEvent):void {

    63. 

  63. 					if (event.detail==Alert.YES) {

    64. 

  64. 						asyncSaveChangesFunction(nextFunction, saveChangesFailureFunction);

    65. 

  65. 					}				

    66. 

  66. 					else if (event.detail==Alert.NO) {

    67. 

  67. 						nextFunction();

    68. 

  68. 					}

    69. 

  69. 					else if (event.detail==Alert.CANCEL) {

    70. 

  70. 						// do nothing

    71. 

  71. 					}

    72. 

  72. 					else {

    73. 

  73. 						throw new Error("Unexpected event type: " + event);

    74. 

  74. 					}

    75. 

  75. 				});

    76. 

  76. 			}

    77. 

  77. 			else {

    78. 

  78. 				nextFunction();

    79. 

  79. 			}				

    80. 

  80. 		}

    81. 

  81. 	}

    82. 

  82. }
    83.