Displays the most recent INIT_PROXY_RESOLVER source's log entries

on the #proxy net-internals tab.

Also adds a link to the #proxy tab to show all INIT_PROXY_RESOLVER
events on the #events tab.

BUG=56430
TEST=manual

Review URL: http://codereview.chromium.org/3990005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@63773 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 59 insertions, 2 deletions

diff --git a/chrome/browser/resources/net_internals/index.html b/chrome/browser/resources/net_internals/index.html
index d146242..1a95210 100644
--- a/chrome/browser/resources/net_internals/index.html
+++ b/chrome/browser/resources/net_internals/index.html
@@ -69,6 +69,17 @@ found in the LICENSE file.
 
       </tr></table>
 
+      <h4>Proxy auto-config initialization</h4>
+      <ul>
+        <li>
+          <a href='#events&q=type:INIT_PROXY_RESOLVER'>View all events</a>
+        </li>
+        <li>
+          Latest proxy resolver event:
+          <pre id=proxyResolverLog></pre>
+        </li>
+      </ul>
+
       <h4>
         Proxies which have failed recently, and are marked as bad
         <input type=button value="Clear bad proxies" id=clearBadProxies />
diff --git a/chrome/browser/resources/net_internals/main.js b/chrome/browser/resources/net_internals/main.js
index 5249789..7bfdb62 100644
--- a/chrome/browser/resources/net_internals/main.js
+++ b/chrome/browser/resources/net_internals/main.js
@@ -57,7 +57,8 @@ function onLoaded() {
                                 'proxyEffectiveSettings',
                                 'proxyReloadSettings',
                                 'badProxiesTableBody',
-                                'clearBadProxies');
+                                'clearBadProxies',
+                                'proxyResolverLog');
 
   // Create a view which will display information on the host resolver.
   var dnsView = new DnsView('dnsTabContent',
diff --git a/chrome/browser/resources/net_internals/proxyview.js b/chrome/browser/resources/net_internals/proxyview.js
index 54bb3fc..0f7f68b 100644
--- a/chrome/browser/resources/net_internals/proxyview.js
+++ b/chrome/browser/resources/net_internals/proxyview.js
@@ -7,6 +7,7 @@
  *
  *   - Shows the current proxy settings.
  *   - Has a button to reload these settings.
+ *   - Shows the log entries for the most recent INIT_PROXY_RESOLVER source
  *   - Shows the list of proxy hostnames that are cached as "bad".
  *   - Has a button to clear the cached bad proxies.
  *
@@ -17,13 +18,18 @@ function ProxyView(mainBoxId,
                    effectiveSettingsDivId,
                    reloadSettingsButtonId,
                    badProxiesTbodyId,
-                   clearBadProxiesButtonId) {
+                   clearBadProxiesButtonId,
+                   proxyResolverLogPreId) {
   DivView.call(this, mainBoxId);
 
+  this.latestProxySourceEntries_ = null;
+  this.latestProxySourceId_ = 0;
+
   // Hook up the UI components.
   this.originalSettingsDiv_ = document.getElementById(originalSettingsDivId);
   this.effectiveSettingsDiv_ =
       document.getElementById(effectiveSettingsDivId);
+  this.proxyResolverLogPre_ = document.getElementById(proxyResolverLogPreId);
   this.badProxiesTbody_ = document.getElementById(badProxiesTbodyId);
 
   var reloadSettingsButton = document.getElementById(reloadSettingsButtonId);
@@ -36,6 +42,7 @@ function ProxyView(mainBoxId,
   // Register to receive proxy information as it changes.
   g_browser.addProxySettingsObserver(this);
   g_browser.addBadProxiesObserver(this);
+  g_browser.addLogObserver(this);
 }
 
 inherits(ProxyView, DivView);
@@ -69,3 +76,41 @@ ProxyView.prototype.onBadProxiesChanged = function(badProxies) {
     addTextNode(badUntilCell, badUntilDate.toLocaleString());
   }
 };
+
+ProxyView.prototype.onLogEntryAdded = function(logEntry) {
+  if (logEntry.source.type != LogSourceType.INIT_PROXY_RESOLVER ||
+      this.latestProxySourceId_ > logEntry.source.id) {
+    return;
+  }
+
+  if (logEntry.source.id > this.latestProxySourceId_) {
+    this.latestProxySourceId_ = logEntry.source.id;
+    this.latestProxySourceEntries_ = [];
+  }
+
+  this.latestProxySourceEntries_.push(logEntry);
+  this.proxyResolverLogPre_.innerHTML = '';
+  addTextNode(this.proxyResolverLogPre_,
+              PrintSourceEntriesAsText(this.latestProxySourceEntries_, false));
+};
+
+/**
+ * Clears the display of and log entries for the last proxy lookup.
+ */
+ProxyView.prototype.clearLog_ = function() {
+  this.latestProxySourceEntries_ = [];
+  // Prevents display of partial logs.
+  ++this.latestProxySourceId_;
+
+  this.proxyResolverLogPre_.innerHTML = '';
+  addTextNode(this.proxyResolverLogPre_, 'Deleted.');
+};
+
+ProxyView.prototype.onLogEntriesDeleted = function(sourceIds) {
+  if (sourceIds.indexOf(this.latestProxySourceId_) != -1)
+    this.clearLog_();
+};
+
+ProxyView.prototype.onAllLogEntriesDeleted = function() {
+  this.clearLog_();
+};