#311 centralize confirmation dialog message

Author: Muhaddatha

webapp/components/topbar/Topbar.js

@@ -20,7 +20,7 @@ import ImportExportHLSDialog from './dialogs/ImportExportHLS';
 import ImportCellParamsDialog from './dialogs/ImportCellParams';
 import UploadDownloadFilesDialog from './dialogs/UploadDownloadFiles';
 
-import { TOPBAR_CONSTANTS, MODEL_STATE } from '../../constants';
+import { TOPBAR_CONSTANTS, MODEL_STATE, DEFAULT_CONFIRMATION_DIALOG_MESSAGE } from '../../constants';
 import { LOAD_TUTORIAL } from '../../redux/actions/general';
 
 const styles = () => ({
@@ -91,8 +91,7 @@ class Topbar extends Component {
         if (this.props.modelState === MODEL_STATE.INSTANTIATED || this.props.modelState === MODEL_STATE.SIMULATED) {
           this.props.openConfirmationDialog({
             title: 'Warning',
-            message: 'A NetPyNE model has already been instantiated or simulated.'
-            + ' Continuing with this action will use the old value of netParams and simConfig for the new model. Do you want to continue?',
+            message: DEFAULT_CONFIRMATION_DIALOG_MESSAGE,
             onConfirm: {
               type: LOAD_TUTORIAL,
               action,

webapp/components/topbar/dialogs/ImportExportHLS.js

@@ -7,7 +7,7 @@ import Box from '@material-ui/core/Box';
 import { withStyles } from '@material-ui/core/styles';
 
 import { ActionDialog, Tooltip } from 'netpyne/components';
-import { NETPYNE_COMMANDS, MODEL_STATE } from '../../../constants';
+import { NETPYNE_COMMANDS, MODEL_STATE, DEFAULT_CONFIRMATION_DIALOG_MESSAGE } from '../../../constants';
 import { PYTHON_CALL } from '../../../redux/actions/general';
 import FileBrowser from '../../general/FileBrowser';
 import Checkbox from '../../general/Checkbox';
@@ -183,8 +183,7 @@ class ImportExportHLS extends React.Component {
   handleConfirmation (command, args) {
     this.props.openConfirmationDialog({
       title: 'Warning',
-      message: 'A NetPyNE model has already been instantiated or simulated.'
-      + ' Continuing with this import action will use the old value of netParams and simConfig for the new model. Do you want to continue?',
+      message: DEFAULT_CONFIRMATION_DIALOG_MESSAGE,
       onConfirm: {
         type: PYTHON_CALL,
         cmd: command,

webapp/constants.js

@@ -4,6 +4,10 @@ export const MINIMIZED_PANEL = 'border_bottom';
 export { WidgetStatus };
 export const TOP_PANEL = 'hlsPanel';
 export const TOOLS_LIST = 'tools';
+
+export const DEFAULT_CONFIRMATION_DIALOG_MESSAGE = 'A NetPyNE model has already been instantiated or simulated.'
++ ' Continuing with this action will use the old value of netParams and simConfig for the new model. Do you want to continue?';
+
 export const THEMES = {
   DARK: 'gui',
   BLACK: 'guiBlack',