add tx retrieval function (#1295)

Web-Wallet support updates

wallet/src/libwallet/controller.rs

@@ -32,7 +32,7 @@ use keychain::Keychain;
 use libtx::slate::Slate;
 use libwallet::api::{APIForeign, APIOwner};
 use libwallet::types::{
-	BlockFees, CbData, OutputData, SendTXArgs, WalletBackend, WalletClient, WalletInfo,
+	BlockFees, CbData, OutputData, SendTXArgs, TxLogEntry, WalletBackend, WalletClient, WalletInfo,
 };
 use libwallet::{Error, ErrorKind};
 
@@ -166,6 +166,20 @@ where
 		api.retrieve_outputs(false, update_from_node, None)
 	}
 
+	fn retrieve_txs(
+		&self,
+		req: &mut Request,
+		api: &mut APIOwner<T, C, K>,
+	) -> Result<(bool, Vec<TxLogEntry>), Error> {
+		let mut update_from_node = false;
+		if let Ok(params) = req.get_ref::<UrlEncodedQuery>() {
+			if let Some(_) = params.get("refresh") {
+				update_from_node = true;
+			}
+		}
+		api.retrieve_txs(update_from_node, None)
+	}
+
 	fn retrieve_summary_info(
 		&self,
 		req: &mut Request,
@@ -198,6 +212,8 @@ where
 		match *path_elems.last().unwrap() {
 			"retrieve_outputs" => json_response(&self.retrieve_outputs(req, api)
 				.map_err(|e| IronError::new(Fail::compat(e), status::BadRequest))?),
+			"retrieve_txs" => json_response(&self.retrieve_txs(req, api)
+				.map_err(|e| IronError::new(Fail::compat(e), status::BadRequest))?),
 			"retrieve_summary_info" => json_response(&self.retrieve_summary_info(req, api)
 				.map_err(|e| IronError::new(Fail::compat(e), status::BadRequest))?),
 			"node_height" => json_response(&self.node_height(req, api)