liquid-funding/contracts/common/Pausable.sol

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2019-10-17 18:13:42 +00:00
pragma solidity ^0.4.18;
import "./Ownable.sol";
/**
* @title Pausable
* @dev Makes contract functions pausable by the owner
*/
contract Pausable is Ownable {
event Paused();
event Unpaused();
bool public paused;
function Pausable() internal {
paused = false;
}
modifier whenNotPaused() {
require(!paused);
_;
}
modifier whenPaused() {
require(paused);
_;
}
/**
* @dev Disables contract functions marked with "whenNotPaused" and enables the use of functions marked with "whenPaused"
* Only the owner of the contract can invoke this function
*/
function pause() external onlyOwner whenNotPaused {
paused = true;
Paused();
}
/**
* @dev Enables contract functions marked with "whenNotPaused" and disables the use of functions marked with "whenPaused"
* Only the owner of the contract can invoke this function
*/
function unpause() external onlyOwner whenPaused {
paused = false;
Unpaused();
}
}