Reworked how the search query TTL is implemented.

src/MainForm.cs

@@ -180,6 +180,12 @@ public partial class MainForm : Form
         if ( key == mSearchResultsKey )
             return ;
 
+        // initialize
+        if ( chartImages == null ) {
+            chartImages = mChartImages.Values ;
+            key = "SHOW-ALL" ;
+        }
+
         // clear the search results
         mSearchResults.SuspendLayout() ;
         mSearchResults.Items.Clear() ;
@@ -191,18 +197,15 @@ public partial class MainForm : Form
         foreach( ChartImage chartImage in chartImages ) {
             ImageListViewItem item = chartImage.imageListViewItem ;
             mSearchResults.Items.Add( item ) ;
-            if ( nItems++ == 0 && key != "" )
+            if ( nItems++ == 0 && key != "" && key != "SHOW-ALL" )
                 item.Selected = true ;
         }
         mSearchResults.ResumeLayout( true ) ;
         mSearchResultsKey = key ;
 
         // clear the search query
-        if ( clearSearchQuery ) {
-            mSearchQueryTextChangedDisabled = true ;
-            mSearchQuery.Text = "" ;
-            mSearchQueryTextChangedDisabled = false ;
-        }
+        if ( clearSearchQuery )
+            setSearchQuery( "", false ) ;
     }
 
     public void showShortcuts()
@@ -267,7 +270,15 @@ public partial class MainForm : Form
         mWebBrowser.BringToFront() ;
     }
 
-    public void setSearchQuery( string s ) { mSearchQuery.Text = s ; }
+    public void setSearchQuery( string queryString, bool raiseEvents=true )
+    {
+        // set the search query string
+        if ( ! raiseEvents )
+            mSearchQueryTextChangedDisabled = true ;
+        mSearchQuery.Text = queryString ;
+        if ( ! raiseEvents )
+            mSearchQueryTextChangedDisabled = false ;
+    }
 
     private void setChartImagePanelScrollPos( int? hscrollPos, int? vscrollPos )
     {

src/MainForm.ui.cs

@@ -93,6 +93,7 @@ public partial class MainForm : Form
         this.Load += new EventHandler( this.MainForm_Load ) ;
         this.FormClosing += new FormClosingEventHandler( this.MainForm_FormClosing ) ;
         this.Resize += new EventHandler( this.MainForm_Resize ) ;
+        this.mSearchQuery.KeyPress += this.SearchQuery_KeyPress ;
         this.mSearchQuery.TextChanged += new EventHandler( this.SearchQuery_TextChanged ) ;
         this.mSearchResults.SelectionChanged += new EventHandler( this.SearchResults_SelectionChanged ) ;
 
@@ -185,7 +186,7 @@ public partial class MainForm : Form
         }
         if ( keyCode == Keys.Escape ) {
             // clear the search query
-            loadSearchResults( mChartImages.Values, "SHOW-ALL", true ) ;
+            loadSearchResults( null, "", true ) ;
             return true ;
         }
         if ( keyCode == Keys.Return )
@@ -212,15 +213,10 @@ public partial class MainForm : Form
         if ( (ch >= 65 && ch <= 90) || ch == 32 )
             sendKey = ((char)ch).ToString().ToLower() ;
         else if ( ch >= 48 && ch <= 57 )
-            sendKey = keyCode.ToString().Substring( 1 ) ;
+            sendKey = keyCode.ToString().Substring( 1 ) ; // nb: this will also detect Shift 0-9 :-/
         else if ( keyCode == Keys.Back )
             sendKey = "{BKSP}" ;
         if ( sendKey != "" ) {
-            // check if it's time to start a new search query
-            int ttl = Program.appConfig.getIntVal( new string[]{"SearchQueryTTL"}, 5 ) ;
-            if ( (DateTime.Now - mLastKeyPressTimeStamp).TotalSeconds > ttl )
-                mSearchQuery.Text = "" ;
-            mLastKeyPressTimeStamp = DateTime.Now ;
             // send the keypress to the search query textbox
             mSearchQuery.Focus() ;
             mDisableProcessCmdKey = true ;
@@ -458,6 +454,16 @@ public partial class MainForm : Form
         doMainFormResize( null ) ;
     }
 
+    private void SearchQuery_KeyPress( object sender, KeyPressEventArgs e )
+    {
+        // check if it's time to start a new search query
+        int ttl = Program.appConfig.getIntVal( new string[]{"SearchQueryTTL"}, 5 ) ;
+        if ( (DateTime.Now - mLastKeyPressTimeStamp).TotalSeconds > ttl ) {
+            setSearchQuery( "", false ) ;
+        }
+        mLastKeyPressTimeStamp = DateTime.Now ;
+    }
+
     private void SearchQuery_TextChanged( object sender, EventArgs e )
     {
         // update the search results