to mimic real UIControl, we need to handle uniqueness.
to mimic real UIControl, we need to handle uniqueness.

seivan/SHAlertViewBlocks,seivan/SHActionSheetBlocks,seivan/SHControlBlocks,seivan/SHBarButtonItemBlocks,seivan/SHBarButtonItemBlocks,seivan/SHAlertViewBlocks,seivan/SHControlBlocks,seivan/SHAlertViewBlocks,seivan/SHControlBlocks,seivan/SHActionSheetBlocks,seivan/SHActionSheetBlocks,seivan/SHBarButtonItemBlocks