[polari/wip/kunaljain/polari-search-result-view] peformance improvements

[Kunal Jain <kunaljain src gnome org>]

commit 9344e4406aaca273ee961b37fcc4fa25c0fd8023
Author: Kunaal Jain <kunaalus gmail com>
Date:   Thu Jul 21 16:29:49 2016 +0530

    peformance improvements

 src/mainWindow.js |    9 +++------
 src/resultList.js |   18 +++++++++++++-----
 2 files changed, 16 insertions(+), 11 deletions(-)
---
diff --git a/src/mainWindow.js b/src/mainWindow.js
index 9bc27a3..238f019 100644
--- a/src/mainWindow.js
+++ b/src/mainWindow.js
@@ -483,18 +483,15 @@ const MainWindow = new Lang.Class({
 
     _handleSearchChanged: function(entry) {
         let text = entry.get_text().replace(/^\s+|\s+$/g, '');
+        let app = this.application;
+        let action = app.lookup_action('search-terms');
+        action.change_state(GLib.Variant.new('s', text));
         if(text!='') {
             this._mode='search';
         } else {
             this._mode='chat';
         }
         this.notify('mode');
-        if (text.length < MIN_SEARCH_WIDTH) {
-            return;
-        }
-        let app = this.application;
-        let action = app.lookup_action('search-terms');
-        action.change_state(GLib.Variant.new('s', text));
         return;
         this._cancellable.cancel();
         this._cancellable.reset();
diff --git a/src/resultList.js b/src/resultList.js
index 8832b48..c6d11b1 100644
--- a/src/resultList.js
+++ b/src/resultList.js
@@ -11,6 +11,8 @@ const AccountsMonitor = imports.accountsMonitor;
 const ChatroomManager = imports.chatroomManager;
 const Lang = imports.lang;
 
+const MIN_SEARCH_WIDTH = 4;
+
 const ResultRow = new Lang.Class({
     Name: 'ResultRow',
     Extends: Gtk.ListBoxRow,
@@ -180,17 +182,21 @@ const ResultList = new Lang.Class({
     },
 
     _clearList: function() {
-        this.foreach(r => { r.destroy(); });
+        this.foreach(r => { r.hide(); });
+    },
+
+    _showList: function() {
+        this.foreach(r => { r.show(); });
     },
 
     _handleSearchChanged: function(group, actionName, value) {
         this._cancellable.cancel();
-        this._cancellable.reset();
-
+        // this._cancellable.reset();
+        this._cancellable  = new Gio.Cancellable();
         let text = value.deep_unpack();
+        this._clearList();
 
-        if(text == '') {
-            this._clearList();
+        if(text.length < MIN_SEARCH_WIDTH) {
             return;
         }
 
@@ -242,6 +248,8 @@ const ResultList = new Lang.Class({
             let row = this._widgetMap[events[i].id];
             this.add(row);
         }
+
+        this._showList();
     },
 
     _formatTimestamp: function(timestamp) {