From 5cc26f36173427a8a6e7be22aaa7db41bc4a5d89 Mon Sep 17 00:00:00 2001
From: "kyle.yuan%sun.com"
 <kyle.yuan%sun.com@18797224-902f-48f8-a5cc-f745e15eee43>
Date: Fri, 17 May 2002 00:50:01 +0000
Subject: [PATCH] Bug 133365 Type letters to navigate XUL listbox

Adde new event handler for keypress event


git-svn-id: svn://10.0.0.236/trunk@121714 18797224-902f-48f8-a5cc-f745e15eee43
---
 .../resources/content/bindings/listbox.xml    | 46 +++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/mozilla/xpfe/global/resources/content/bindings/listbox.xml b/mozilla/xpfe/global/resources/content/bindings/listbox.xml
index 698a642506a..974c20c42a8 100644
--- a/mozilla/xpfe/global/resources/content/bindings/listbox.xml
+++ b/mozilla/xpfe/global/resources/content/bindings/listbox.xml
@@ -34,6 +34,8 @@
       <field name="_selectionStart">null</field>
       <field name="_currentItem">null</field>
       <field name="_selectTimeout">null</field>
+      <field name="_lastKeyTime">0</field>
+      <field name="_incrementalString">""</field>
 
       <constructor>
       <![CDATA[
@@ -61,6 +63,11 @@
                 onget="return this.boxObject.QueryInterface(Components.interfaces.nsIListBoxObject);"
                 readonly="true"/>
 
+      <property name="disableKeyNavigation"
+                onget="return this.hasAttribute('disableKeyNavigation');"
+                onset="if (val) this.setAttribute('disableKeyNavigation', 'true');
+                       else this.removeAttribute('disableKeyNavigation'); return val;"/>
+
       <method name="timedSelect">
         <parameter name="item"/>
         <parameter name="timeout"/>
@@ -635,6 +642,45 @@
           this.currentItem.checked = !this.currentItem.checked;
       ]]>
       </handler>
+      <handler event="keypress">
+      <![CDATA[
+         if (!this.disableKeyNavigation && event.charCode > 0) {
+           var key = String.fromCharCode(event.charCode);
+           key = key.toLowerCase();
+           if (event.timeStamp - this._lastKeyTime > 1000)
+             this._incrementalString = key;
+           else {
+             if (this._incrementalString.length != 1 || this._incrementalString.charAt(0) != key.charAt(0))
+               this._incrementalString += key;
+           }
+           this._lastKeyTime = event.timeStamp;
+           
+           var l = this.selectedItems.length;
+           var c = -1;
+           if (l > 0)
+             c = this.getIndexOfItem(this.selectedItems[l-1]);
+           var rowCount = this.getRowCount();
+           var start = 1;
+           
+           if (this._incrementalString.length > 1)
+             start = 0;
+
+           for (var i = 0; i < rowCount; i++) {
+             var k = (i + start + c) % rowCount;
+             var item = this.getItemAtIndex(k); //listitem
+             var cellText = item.getAttribute("label");
+             cellText = cellText.toLowerCase();
+             if (cellText.search(this._incrementalString) == 0) {
+               this._isUpSelection=0;
+               this._isDownSelection=0;
+               this.ensureIndexIsVisible(k);
+               this.timedSelect(item, 500);
+               break;
+             }
+           }
+         }
+       ]]>
+       </handler>
     </handlers>    
   </binding>