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Enable multiple EtherTokenContract instances

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This commit is contained in:
Leonid Logvinov
2017-12-19 14:22:40 +01:00
parent 613fada49f
commit 0056c66d32
1 changed files with 9 additions and 4 deletions
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13
packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
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@@ -27,7 +27,7 @@ import {TokenWrapper} from './token_wrapper';
* The caller can convert ETH into the equivalent number of wrapped ETH ERC20 tokens and back.
*/
export class EtherTokenWrapper extends ContractWrapper {
private _etherTokenContractIfExists?: EtherTokenContract;
private _etherTokenContractsByAddress: {[address: string]: EtherTokenContract};
private _tokenWrapper: TokenWrapper;
constructor(web3Wrapper: Web3Wrapper, networkId: number, abiDecoder: AbiDecoder, tokenWrapper: TokenWrapper) {
super(web3Wrapper, networkId, abiDecoder);
@@ -144,14 +144,19 @@ export class EtherTokenWrapper extends ContractWrapper {
}
private _invalidateContractInstance(): void {
this.unsubscribeAll();
delete this._etherTokenContractIfExists;
this._etherTokenContractsByAddress = {};
}
private async _getEtherTokenContractAsync(etherTokenAddress: string): Promise<EtherTokenContract> {
let etherTokenContract = this._etherTokenContractsByAddress[etherTokenAddress];
if (!_.isUndefined(etherTokenContract)) {
return etherTokenContract;
}
const web3ContractInstance = await this._instantiateContractIfExistsAsync(
artifacts.EtherTokenArtifact, etherTokenAddress,
);
const contractInstance = new EtherTokenContract(web3ContractInstance, this._web3Wrapper.getContractDefaults());
this._etherTokenContractIfExists = contractInstance;
return this._etherTokenContractIfExists;
etherTokenContract = contractInstance;
this._etherTokenContractsByAddress[etherTokenAddress] = etherTokenContract;
return etherTokenContract;
}
}