General react performance improvements (#2796)

* General React performance improvements

* Cleaned up unused props/state in PermaLinkView and PostFocusView

1 files changed, 12 insertions, 1 deletions

diff --git a/webapp/components/channel_info_modal.jsx b/webapp/components/channel_info_modal.jsx
index 4c16dda90..d44df4056 100644
--- a/webapp/components/channel_info_modal.jsx
+++ b/webapp/components/channel_info_modal.jsx
@@ -9,6 +9,17 @@ import {Modal} from 'react-bootstrap';
 import React from 'react';
 
 export default class ChannelInfoModal extends React.Component {
+    shouldComponentUpdate(nextProps) {
+        if (nextProps.show !== this.props.show) {
+            return true;
+        }
+
+        if (!Utils.areObjectsEqual(nextProps.channel, this.props.channel)) {
+            return true;
+        }
+
+        return false;
+    }
     render() {
         let channel = this.props.channel;
         if (!channel) {
@@ -93,4 +104,4 @@ ChannelInfoModal.propTypes = {
     show: React.PropTypes.bool.isRequired,
     onHide: React.PropTypes.func.isRequired,
     channel: React.PropTypes.object.isRequired
-};
\ No newline at end of file
+};