Process selection dialog: implement filter

Author: ilabutin

src/PerfView/Dialogs/SelectProcess.xaml

@@ -31,6 +31,17 @@
                 </FlowDocument>
             </RichTextBox.Document>
         </RichTextBox>
+        <Grid DockPanel.Dock="Top" >
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="100*"/>
+            </Grid.ColumnDefinitions>
+            <Rectangle Grid.Column="0" Grid.ColumnSpan="3" Fill="#FFD1D1D1"/>
+            <TextBlock Grid.Column="0" VerticalAlignment="Center" Margin="5,0,0,0" ToolTip="Only processes that match this filter pattern are displayed.">
+                    <Hyperlink Command="Help" CommandParameter="ProcessFilterTextBox">Filter:</Hyperlink>
+            </TextBlock>
+            <TextBox Name="ProcessFilterTextBox" TextChanged="FilterTextChanged" Grid.Column="1" Margin="5,2,2,2" />
+        </Grid>
         <Grid DockPanel.Dock="Bottom" Background="#FFB0B0B0" >
             <Grid.ColumnDefinitions>
                 <ColumnDefinition Width="*"/>
@@ -47,8 +58,8 @@
                     ToolTip="Investigate all processes"/>
             <Button Margin="5,4" Grid.Column="5" Width="80" Content="Cancel" Click="CancelClicked" IsCancel="True" />
         </Grid>
-        <Grid PreviewKeyDown="KeyDownHander">
-            <WPFToolKit:DataGrid Name="Grid" 
+        <Grid PreviewKeyDown="GridKeyDownHander">
+            <WPFToolKit:DataGrid Name="Grid"
               AlternatingRowBackground="#FFF2F1A4"
               AutoGenerateColumns="False" 
               MouseDoubleClick="OKClicked"

src/PerfView/Dialogs/SelectProcess.xaml.cs

@@ -2,7 +2,9 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Media;
+using System.Text.RegularExpressions;
 using System.Windows;
+using System.Windows.Controls;
 using System.Windows.Input;
 
 namespace PerfView
@@ -22,6 +24,8 @@ public SelectProcess(Window parentWindow, IEnumerable<IProcess> processes, TimeS
                 AllProcsButton.Visibility = System.Windows.Visibility.Hidden;
             }
 
+            ProcessFilterTextBox.Text = "";
+
             UpdateItemSource();
             var filteredProcesses = Grid.ItemsSource as List<IProcess>;
 
@@ -95,7 +99,26 @@ private void UpdateItemSource()
                 return;
             }
 
-            Grid.ItemsSource = m_processes;
+            var filterText = ProcessFilterTextBox.Text;
+            if (filterText == "")
+            {
+                Grid.ItemsSource = m_processes;
+                return;
+            }
+            var regex = Regex.Escape(filterText);
+            regex = regex.Replace(@"\*", ".*");
+            var filterRegex = new Regex(regex, RegexOptions.IgnoreCase);
+
+            List<IProcess> processes = new List<IProcess>();
+            foreach (var process in m_processes)
+            {
+                if (filterRegex.Match(process.Name).Success || filterRegex.Match(process.CommandLine).Success)
+                {
+                    processes.Add(process);
+                }
+            }
+
+            Grid.ItemsSource = processes;
         }
 
         internal void OKClicked(object sender, RoutedEventArgs e)
@@ -120,7 +143,7 @@ private void DoHyperlinkHelp(object sender, ExecutedRoutedEventArgs e)
         {
             MainWindow.DisplayUsersGuide(e.Parameter as string);
         }
-        private void KeyDownHander(object sender, KeyEventArgs e)
+        private void GridKeyDownHander(object sender, KeyEventArgs e)
         {
             if (e.Key == Key.Return)
             {
@@ -147,6 +170,11 @@ private void KeyDownHander(object sender, KeyEventArgs e)
                 e.Handled = true;
             }
         }
+        private void FilterTextChanged(object sender, TextChangedEventArgs e)
+        {
+            UpdateItemSource();
+        }
+
         private void AllProcsClicked(object sender, RoutedEventArgs e)
         {
             m_action(null);

src/PerfView/SupportFiles/UsersGuide.htm

@@ -821,6 +821,13 @@ <h3>
         you type the first character of the process name it will navigate to the first process
         with that name.&nbsp;
     </p>
+    <p>
+        <a id="ProcessFilterTextBox"><strong>Process Filter Textbox</strong></a> The box just
+        above the list of process.&nbsp;&nbsp; If you type text in this box, then only
+        processes that match this string (process name or command line, case insensitive) will
+        be displayed. &nbsp;&nbsp; The * character is a wild card.&nbsp;&nbsp; This is a quick
+        way of finding a particular process.
+    </p>
     <p>
         If you wish to see samples for more than one process for your analysis click the
         &#39;All Procs&#39; button.&nbsp;&nbsp;&nbsp;&nbsp;