Refactor to minimize re-rendering of certain aspects

app/sync/storage.js

@@ -12,6 +12,25 @@ export const SYNC_MODE_OFF = 'paused';
 export const SYNC_MODE_ON = 'active';
 export const SYNC_MODE_NEVER = 'never';
 export const SYNC_MODE_UNSET = 'unset';
+let changeListeners = [];
+
+export function onChange (callback) {
+  changeListeners.push(callback);
+}
+
+export function offChange (callback) {
+  changeListeners = changeListeners.filter(l => l !== callback);
+}
+
+let _changeTimeout = null;
+function _notifyChange () {
+  clearTimeout(_changeTimeout);
+  _changeTimeout = setTimeout(() => {
+    for (const fn of changeListeners) {
+      fn();
+    }
+  }, 200);
+}
 
 export function allActiveResources (resourceGroupId = null) {
   if (resourceGroupId) {
@@ -86,6 +105,7 @@ export function findResourcesByDocId (id) {
 export async function removeResourceGroup (resourceGroupId) {
   await _execDB(TYPE_RESOURCE, 'remove', {resourceGroupId}, {multi: true});
   await _execDB(TYPE_CONFIG, 'remove', {resourceGroupId}, {multi: true});
+  _notifyChange();
 }
 
 export async function insertResource (resource) {
@@ -94,17 +114,20 @@ export async function insertResource (resource) {
   h.update(resource.id);
   const newResource = Object.assign({}, resource, {_id: `rs_${h.digest('hex')}`});
   await _execDB(TYPE_RESOURCE, 'insert', newResource);
+  _notifyChange();
   return newResource;
 }
 
 export async function updateResource (resource, ...patches) {
   const newDoc = Object.assign({}, resource, ...patches);
   await _execDB(TYPE_RESOURCE, 'update', {_id: resource._id}, newDoc, {multi: true});
+  _notifyChange();
   return newDoc;
 }
 
-export function removeResource (resource) {
-  return _execDB(TYPE_RESOURCE, 'remove', {_id: resource._id}, {multi: true});
+export async function removeResource (resource) {
+  await _execDB(TYPE_RESOURCE, 'remove', {_id: resource._id}, {multi: true});
+  _notifyChange();
 }
 
 // ~~~~~~ //
@@ -196,6 +219,7 @@ export function initDB (config, forceReset) {
 // ~~~~~~~ //
 
 let _database = null;
+
 function _getDB (type, config = {}) {
   initDB(config);
   return _database[type];

app/ui/components/base/modal.js

@@ -111,24 +111,17 @@ class Modal extends PureComponent {
     this.props.onHide && this.props.onHide();
   }
 
-  componentDidMount () {
-    this._node.addEventListener('keydown', this._handleKeyDown);
-  }
-
-  componentWillUnmount () {
-    if (this._node) {
-      this._node.removeEventListener('keydown', this._handleKeyDown);
-    }
-  }
-
   render () {
     const {tall, wide, noEscape, className, children} = this.props;
     const {open, zIndex, forceRefreshCounter} = this.state;
 
+    if (!open) {
+      return null;
+    }
+
     const classes = classnames(
       'modal',
       className,
-      {'modal--open': open},
       {'modal--fixed-height': tall},
       {'modal--noescape': noEscape},
       {'modal--wide': wide},
@@ -141,6 +134,7 @@ class Modal extends PureComponent {
 
     return (
       <div ref={this._setModalRef}
+           onKeyDown={this._handleKeyDown}
            tabIndex="-1"
            className={classes}
            style={styles}

app/ui/components/codemirror/code-editor.js

@@ -27,7 +27,7 @@ const BASE_CODEMIRROR_OPTIONS = {
   placeholder: 'Start Typing...',
   foldGutter: true,
   height: 'auto',
-  autoRefresh: 500,
+  autoRefresh: 2000,
   lineWrapping: true,
   scrollbarStyle: 'native',
   lint: true,

app/ui/components/dropdowns/sync-dropdown.js

@@ -19,8 +19,11 @@ class SyncDropdown extends PureComponent {
 
     this.state = {
       loggedIn: null,
-      syncData: null,
-      loading: false
+      loading: false,
+      resourceGroupId: null,
+      syncMode: null,
+      syncPercent: 0,
+      workspaceName: ''
     };
   }
 
@@ -33,8 +36,7 @@ class SyncDropdown extends PureComponent {
   }
 
   async _handleSyncResourceGroupId () {
-    const {syncData} = this.state;
-    const resourceGroupId = syncData.resourceGroupId;
+    const resourceGroupId = this.state;
 
     // Set loading state
     this.setState({loading: true});
@@ -73,15 +75,13 @@ class SyncDropdown extends PureComponent {
     const numClean = all.length - dirty.length;
     const syncPercent = all.length === 0 ? 100 : parseInt(numClean / all.length * 1000) / 10;
 
-    const syncData = {
+    if (this._isMounted) {
+      this.setState({
         resourceGroupId,
         syncPercent,
         syncMode: config.syncMode,
-      name: workspace.name
-    };
-
-    if (this._isMounted) {
-      this.setState({syncData});
+        workspaceName: workspace.name
+      });
     }
   }
 
@@ -90,29 +90,26 @@ class SyncDropdown extends PureComponent {
     await this._reloadData();
   }
 
-  async componentWillMount () {
-    this._interval = setInterval(this._reloadData, 500);
+  async componentDidMount () {
+    this._isMounted = true;
+    syncStorage.onChange(this._reloadData);
     await this._reloadData();
   }
 
-  componentDidMount () {
-    this._isMounted = true;
-  }
-
   componentWillUnmount () {
-    clearInterval(this._interval);
+    syncStorage.offChange(this._reloadData);
     this._isMounted = false;
   }
 
   async componentDidUpdate () {
-    const {syncData} = this.state;
+    const {resourceGroupId, syncMode} = this.state;
 
-    if (!syncData) {
+    if (!resourceGroupId) {
       return;
     }
 
     // Sync has not yet been configured for this workspace, so prompt the user to do so
-    const isModeUnset = !syncData.syncMode || syncData.syncMode === syncStorage.SYNC_MODE_UNSET;
+    const isModeUnset = !syncMode || syncMode === syncStorage.SYNC_MODE_UNSET;
     if (isModeUnset && !this._hasPrompted) {
       this._hasPrompted = true;
       await this._handleShowSyncModePrompt();
@@ -138,14 +135,14 @@ class SyncDropdown extends PureComponent {
 
   render () {
     const {className} = this.props;
-    const {syncData, loading, loggedIn} = this.state;
+    const {resourceGroupId, loading, loggedIn} = this.state;
 
     // Don't show the sync menu unless we're logged in
     if (!loggedIn) {
       return null;
     }
 
-    if (!syncData) {
+    if (!resourceGroupId) {
       return (
         <div className={className}>
           <button className="btn btn--compact wide" disabled>
@@ -154,7 +151,7 @@ class SyncDropdown extends PureComponent {
         </div>
       );
     } else {
-      const {syncMode, syncPercent} = syncData;
+      const {syncMode, syncPercent} = this.state;
       return (
         <div className={className}>
           <Dropdown wide className="wide tall">

app/ui/components/modals/request-switcher-modal.js

@@ -25,6 +25,25 @@ class RequestSwitcherModal extends PureComponent {
     };
   }
 
+  _handleKeydown (e) {
+    const keyCode = e.keyCode;
+
+    if (keyCode === 38 || (keyCode === 9 && e.shiftKey)) {
+      // Up or Shift+Tab
+      this._setActiveIndex(this.state.activeIndex - 1);
+    } else if (keyCode === 40 || keyCode === 9) {
+      // Down or Tab
+      this._setActiveIndex(this.state.activeIndex + 1);
+    } else if (keyCode === 13) {
+      // Enter
+      this._activateCurrentIndex();
+    } else {
+      return;
+    }
+
+    e.preventDefault();
+  }
+
   _setModalRef (n) {
     this.modal = n;
   }
@@ -186,27 +205,6 @@ class RequestSwitcherModal extends PureComponent {
     }
   }
 
-  componentDidMount () {
-    ReactDOM.findDOMNode(this).addEventListener('keydown', e => {
-      const keyCode = e.keyCode;
-
-      if (keyCode === 38 || (keyCode === 9 && e.shiftKey)) {
-        // Up or Shift+Tab
-        this._setActiveIndex(this.state.activeIndex - 1);
-      } else if (keyCode === 40 || keyCode === 9) {
-        // Down or Tab
-        this._setActiveIndex(this.state.activeIndex + 1);
-      } else if (keyCode === 13) {
-        // Enter
-        this._activateCurrentIndex();
-      } else {
-        return;
-      }
-
-      e.preventDefault();
-    });
-  }
-
   render () {
     const {
       searchString,
@@ -219,7 +217,7 @@ class RequestSwitcherModal extends PureComponent {
     const requestGroups = workspaceChildren.filter(d => d.type === models.requestGroup.type);
 
     return (
-      <Modal ref={this._setModalRef} dontFocus tall>
+      <Modal ref={this._setModalRef} dontFocus tall onKeyDown={this._handleKeydown}>
         <ModalHeader hideCloseButton>
           <div className="pull-right txt-sm pad-right">
             <span className="monospace">tab</span> or

app/ui/components/response-timer.js

@@ -7,7 +7,6 @@ class ResponseTimer extends PureComponent {
     super(props);
     this._interval = null;
     this.state = {
-      show: false,
       elapsedTime: 0
     };
   }
@@ -16,24 +15,27 @@ class ResponseTimer extends PureComponent {
     clearInterval(this._interval);
   }
 
-  componentDidMount () {
+  componentWillReceiveProps (nextProps) {
+    const {loadStartTime} = nextProps;
+
+    if (loadStartTime <= 0) {
+      clearInterval(this._interval);
+      return;
+    }
+
+    clearInterval(this._interval); // Just to be sure
     this._interval = setInterval(() => {
-      const {loadStartTime} = this.props;
-      if (loadStartTime > 0) {
-        // Show and update if needed
       const millis = Date.now() - loadStartTime - 200;
       const elapsedTime = Math.round(millis / 100) / 10;
-        this.setState({show: true, elapsedTime});
-      } else if (this.state.show) {
-        // Hide if needed after a small delay (so it doesn't disappear too quickly)
-        setTimeout(() => this.setState({show: false}), 200);
-      }
+      this.setState({elapsedTime});
     }, 100);
   }
 
   render () {
-    const {handleCancel} = this.props;
-    const {show, elapsedTime} = this.state;
+    const {handleCancel, loadStartTime} = this.props;
+    const {elapsedTime} = this.state;
+
+    const show = loadStartTime > 0;
 
     return (
       <div className={classnames('overlay theme--overlay', {'overlay--hidden': !show})}>

app/ui/components/settings/plugins.js

@@ -23,6 +23,8 @@ class Plugins extends React.PureComponent {
     isRefreshingPlugins: boolean
   };
 
+  _isMounted: boolean;
+
   constructor (props: any) {
     super(props);
     this.state = {
@@ -75,14 +77,22 @@ class Plugins extends React.PureComponent {
     const delta = Date.now() - start;
     await delay(500 - delta);
 
-    this.setState({plugins, isRefreshingPlugins: false});
     trackEvent('Plugins', 'Refresh');
+
+    if (this._isMounted) {
+      this.setState({plugins, isRefreshingPlugins: false});
+    }
   }
 
   componentDidMount () {
+    this._isMounted = true;
     this._handleRefreshPlugins();
   }
 
+  componentWillUnmount () {
+    this._isMounted = false;
+  }
+
   render () {
     const {plugins, error, isInstallingFromNpm, isRefreshingPlugins} = this.state;
 

app/ui/css/components/modal.less

@@ -3,22 +3,13 @@
 
 .modal {
   // Hidden state
-  opacity: 0;
-  z-index: -999999; // Component updates this manually
-
-  transition: opacity 250ms;
   position: absolute;
   top: 0;
-  left: -99999px;
+  left: 0;
   right: 0;
   bottom: 0;
   padding: @padding-lg;
 
-  &.modal--open {
-    opacity: 1;
-    left: 0;
-  }
-
   &:focus {
     outline: 0;
   }
@@ -33,15 +24,11 @@
   }
 
   .modal__content__wrapper {
-    top: 1rem;
     width: @modal-width;
     height: 100%;
     max-width: 100%;
     max-height: 100%;
     margin: auto;
-    position: relative;
-    transform: scale(0.95);
-    transition: transform 150ms ease-out, top 200ms ease-out;
 
     // We want pointer events to pass through to the backdrop so we can close it
     pointer-events: none;
@@ -51,11 +38,6 @@
     height: 100%;
   }
 
-  &.modal--open .modal__content__wrapper {
-    transform: scale(1);
-    top: 0;
-  }
-
   &.modal--wide .modal__content__wrapper {
     width: @modal-width-wide;
   }