add framework for blocking user interaction

this adds two new methods to LoopUI.js, setBusyLoading and
clearBusyLoading, and one new state variable, busyLoadingCount, for
supporting the blocking of user clicking during async back end calls
that might take a bit of time to return. Blocking the user from clicking
on a component box is implemented as an important first case use, as
well as all PerformAction calls.

Issue-ID: CLAMP-894
Change-Id: I28660afe26b6cc8184b9392aee42157f44601bf6
Signed-off-by: Ted Humphrey <Thomas.Humphrey@att.com>

3 files changed, 46 insertions, 30 deletions

diff --git a/ui-react/src/components/dialogs/PerformActions.js b/ui-react/src/components/dialogs/PerformActions.js
index cf5a3c20e..f6001e21f 100644
--- a/ui-react/src/components/dialogs/PerformActions.js
+++ b/ui-react/src/components/dialogs/PerformActions.js
@@ -22,24 +22,19 @@
  */
 import React from 'react';
 import LoopActionService from '../../api/LoopActionService';
-import Spinner from 'react-bootstrap/Spinner'
-import styled from 'styled-components';
 
-const StyledSpinnerDiv = styled.div`
-	justify-content: center !important;
-	display: flex !important;
-`;
 
 export default class PerformActions extends React.Component {
 	state = {
 		loopName: this.props.loopCache.getLoopName(),
 		loopAction: this.props.loopAction
 	};
+
 	constructor(props, context) {
 		super(props, context);
-
 		this.refreshStatus = this.refreshStatus.bind(this);
 	}
+
 	componentWillReceiveProps(newProps) {
 		this.setState({
 			loopName: newProps.loopCache.getLoopName(),
@@ -51,35 +46,50 @@ export default class PerformActions extends React.Component {
 		const action = this.state.loopAction;
 		const loopName = this.state.loopName;
 
-		LoopActionService.performAction(loopName, action).then(pars => {
+		if (action === 'delete') {
+			if (window.confirm('You are about to remove Control Loop Model "' + loopName +
+					'". Select OK to continue with deletion or Cancel to keep the model.') === false) {
+				return;
+			}
+		}
+
+		this.props.setBusyLoading(); // Alert top level to start block user clicks
+
+		LoopActionService.performAction(loopName, action)
+		.then(pars => {
 			this.props.showSucAlert("Action " + action + " successfully performed");
-			// refresh status and update loop logs
-			this.refreshStatus(loopName);
+			if (action === 'delete') {
+				this.props.updateLoopFunction(null);
+				this.props.history.push('/');
+			} else {
+				// refresh status and update loop logs
+				this.refreshStatus(loopName);
+			}
 		})
 		.catch(error => {
 			this.props.showFailAlert("Action " + action + " failed");
 			// refresh status and update loop logs
 			this.refreshStatus(loopName);
-		});
-
+		})
+		.finally(() => this.props.clearBusyLoading());
 	}
 
 	refreshStatus(loopName) {
-		LoopActionService.refreshStatus(loopName).then(data => {
+
+		this.props.setBusyLoading();
+
+		LoopActionService.refreshStatus(loopName)
+		.then(data => {
 			this.props.updateLoopFunction(data);
 			this.props.history.push('/');
 		})
-			.catch(error => {
+		.catch(error => {
 			this.props.history.push('/');
-		});
+		})
+		.finally(() => this.props.clearBusyLoading());
 	}
 
 	render() {
-		return (
-			<StyledSpinnerDiv>
-				<Spinner animation="border" role="status">
-				</Spinner>
-			</StyledSpinnerDiv>
-		);
+		return null;
 	}
 }
diff --git a/ui-react/src/components/dialogs/PerformActions.test.js b/ui-react/src/components/dialogs/PerformActions.test.js
index b833a929d..c91c2f675 100644
--- a/ui-react/src/components/dialogs/PerformActions.test.js
+++ b/ui-react/src/components/dialogs/PerformActions.test.js
@@ -38,6 +38,8 @@ describe('Verify PerformActions', () => {
 		const updateLoopFunction = jest.fn();
 		const showSucAlert = jest.fn();
 		const showFailAlert = jest.fn();
+		const setBusyLoading = jest.fn();
+		const clearBusyLoading = jest.fn();
 		
 		LoopActionService.refreshStatus = jest.fn().mockImplementation(() => {
 			return Promise.resolve({
@@ -47,7 +49,7 @@ describe('Verify PerformActions', () => {
 			});
 		});
 		const component = shallow(<PerformActions loopCache={loopCache} 
-					loopAction="submit" history={historyMock} updateLoopFunction={updateLoopFunction} showSucAlert={showSucAlert} showFailAlert={showFailAlert} />)
+					loopAction="submit" history={historyMock} updateLoopFunction={updateLoopFunction} showSucAlert={showSucAlert} showFailAlert={showFailAlert} setBusyLoading={setBusyLoading} clearBusyLoading={clearBusyLoading}/>)
 		await flushPromises();
 		component.update();
 
@@ -60,6 +62,8 @@ describe('Verify PerformActions', () => {
 		const updateLoopFunction = jest.fn();
 		const showSucAlert = jest.fn();
 		const showFailAlert = jest.fn();
+		const setBusyLoading = jest.fn();
+		const clearBusyLoading = jest.fn();
 
 		LoopActionService.performAction = jest.fn().mockImplementation(() => {
 			return Promise.resolve({
@@ -76,7 +80,7 @@ describe('Verify PerformActions', () => {
 			});
 		});
 		const component = shallow(<PerformActions loopCache={loopCache} 
-						loopAction="submit" history={historyMock} updateLoopFunction={updateLoopFunction} showSucAlert={showSucAlert} showFailAlert={showFailAlert} />)
+						loopAction="submit" history={historyMock} updateLoopFunction={updateLoopFunction} showSucAlert={showSucAlert} showFailAlert={showFailAlert} setBusyLoading={setBusyLoading} clearBusyLoading={clearBusyLoading}/>)
 		await flushPromises();
 		component.update();
 
diff --git a/ui-react/src/components/loop_viewer/svg/SvgGenerator.js b/ui-react/src/components/loop_viewer/svg/SvgGenerator.js
index d718c2e44..7070455e7 100644
--- a/ui-react/src/components/loop_viewer/svg/SvgGenerator.js
+++ b/ui-react/src/components/loop_viewer/svg/SvgGenerator.js
@@ -70,13 +70,15 @@ class SvgGenerator extends React.Component {
 	}
 
 	handleSvgClick(event) {
-	    if (this.state.clickable) {
-            console.debug("svg click event received");
-            var elementName = event.target.parentNode.getAttribute('policyId');
-            console.info("SVG element clicked", elementName);
-            if (elementName !== null) {
-                this.props.history.push("/policyModal/"+event.target.parentNode.getAttribute('policyType')+"/"+elementName);
-            }
+		console.debug("svg click event received");
+		if (this.state.clickable) {
+			var elementName = event.target.parentNode.getAttribute('policyId');
+			console.info("SVG element clicked", elementName);
+			// Only allow movement to policy editing IF there busyLoadingCOunt is 0,
+			// meaning we are not waiting for refreshStatus to complete, for example
+			if (elementName !== null && !this.props.isBusyLoading()) {
+				this.props.history.push("/policyModal/"+event.target.parentNode.getAttribute('policyType')+"/"+elementName);
+			}
 		}
 	}