Initial implementation of the hung renderer dialog on Mac.

BUG=http://crbug.com/13152
TEST=Navigate to about:hang in a tab, verify that the dialog comes up.
Review URL: http://codereview.chromium.org/146012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@19125 0039d316-1c4b-4281-b951-d872f2087c98

6 files changed, 928 insertions, 10 deletions

diff --git a/chrome/app/nibs/en.lproj/HungRendererDialog.xib b/chrome/app/nibs/en.lproj/HungRendererDialog.xib
new file mode 100644
index 0000000..5b75f75
--- /dev/null
+++ b/chrome/app/nibs/en.lproj/HungRendererDialog.xib
@@ -0,0 +1,664 @@
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+					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
+					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
+				</object>
+			</object>
+			<object class="NSMutableDictionary" key="unlocalizedProperties">
+				<bool key="EncodedWithXMLCoder">YES</bool>
+				<object class="NSArray" key="dict.sortedKeys">
+					<bool key="EncodedWithXMLCoder">YES</bool>
+				</object>
+				<object class="NSMutableArray" key="dict.values">
+					<bool key="EncodedWithXMLCoder">YES</bool>
+				</object>
+			</object>
+			<nil key="activeLocalization"/>
+			<object class="NSMutableDictionary" key="localizations">
+				<bool key="EncodedWithXMLCoder">YES</bool>
+				<object class="NSArray" key="dict.sortedKeys">
+					<bool key="EncodedWithXMLCoder">YES</bool>
+				</object>
+				<object class="NSMutableArray" key="dict.values">
+					<bool key="EncodedWithXMLCoder">YES</bool>
+				</object>
+			</object>
+			<nil key="sourceID"/>
+			<int key="maxID">34</int>
+		</object>
+		<object class="IBClassDescriber" key="IBDocument.Classes">
+			<object class="NSMutableArray" key="referencedPartialClassDescriptions">
+				<bool key="EncodedWithXMLCoder">YES</bool>
+				<object class="IBPartialClassDescription">
+					<string key="className">HungRendererController</string>
+					<string key="superclassName">NSWindowController</string>
+					<object class="NSMutableDictionary" key="actions">
+						<bool key="EncodedWithXMLCoder">YES</bool>
+						<object class="NSMutableArray" key="dict.sortedKeys">
+							<bool key="EncodedWithXMLCoder">YES</bool>
+							<string>kill:</string>
+							<string>wait:</string>
+						</object>
+						<object class="NSMutableArray" key="dict.values">
+							<bool key="EncodedWithXMLCoder">YES</bool>
+							<string>id</string>
+							<string>id</string>
+						</object>
+					</object>
+					<object class="NSMutableDictionary" key="outlets">
+						<bool key="EncodedWithXMLCoder">YES</bool>
+						<object class="NSMutableArray" key="dict.sortedKeys">
+							<bool key="EncodedWithXMLCoder">YES</bool>
+							<string>killButton_</string>
+							<string>tableView_</string>
+							<string>waitButton_</string>
+						</object>
+						<object class="NSMutableArray" key="dict.values">
+							<bool key="EncodedWithXMLCoder">YES</bool>
+							<string>NSButton</string>
+							<string>NSTableView</string>
+							<string>NSButton</string>
+						</object>
+					</object>
+					<object class="IBClassDescriptionSource" key="sourceIdentifier">
+						<string key="majorKey">IBProjectSource</string>
+						<string key="minorKey">browser/cocoa/hung_renderer_dialog_cocoa.h</string>
+					</object>
+				</object>
+				<object class="IBPartialClassDescription">
+					<string key="className">NSObject</string>
+					<object class="IBClassDescriptionSource" key="sourceIdentifier">
+						<string key="majorKey">IBProjectSource</string>
+						<string key="minorKey">browser/cocoa/tab_strip_model_observer_bridge.h</string>
+					</object>
+				</object>
+			</object>
+		</object>
+		<int key="IBDocument.localizationMode">0</int>
+		<string key="IBDocument.LastKnownRelativeProjectPath">../../../chrome.xcodeproj</string>
+		<int key="IBDocument.defaultPropertyAccessControl">3</int>
+	</data>
+</archive>
diff --git a/chrome/browser/cocoa/hung_renderer_controller.h b/chrome/browser/cocoa/hung_renderer_controller.h
new file mode 100644
index 0000000..9139503b
--- /dev/null
+++ b/chrome/browser/cocoa/hung_renderer_controller.h
@@ -0,0 +1,65 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_COCOA_HUNG_RENDERER_CONTROLLER_H_
+#define CHROME_BROWSER_COCOA_HUNG_RENDERER_CONTROLLER_H_
+
+// A controller for the Mac hung renderer dialog window.  Only one
+// instance of this controller can exist at any time, although a given
+// controller is destroyed when its window is closed.
+//
+// The dialog itself displays a list of frozen tabs, all of which
+// share a render process.  Since there can only be a single dialog
+// open at a time, if showForTabContents is called for a different
+// tab, the dialog is repurposed to show a warning for the new tab.
+//
+// The caller is required to call endForTabContents before deleting
+// any TabContents object.
+
+#import <Cocoa/Cocoa.h>
+
+#include <vector>
+
+@interface HungRendererController : NSWindowController {
+ @private
+  IBOutlet NSButton* waitButton_;
+  IBOutlet NSButton* killButton_;
+  IBOutlet NSTableView* tableView_;
+
+  // The TabContents for which this dialog is open.  Should never be
+  // NULL while this dialog is open.
+  TabContents* hungContents_;
+
+  // Backing data for |tableView_|.  Contains a list of all
+  // TabContents that share a renderer process with |hungContents_|.
+  std::vector<TabContents*> hungRenderers_;
+}
+
+// Kills the hung renderers.
+- (IBAction)kill:(id)sender;
+
+// Waits longer for the renderers to respond.
+- (IBAction)wait:(id)sender;
+
+// Modifies the dialog to show a warning for the given tab contents.
+// The dialog will contain a list of all tabs that share a renderer
+// process with |contents|.  The caller must not delete any tab
+// contents without first calling endForTabContents.
+- (void)showForTabContents:(TabContents*)contents;
+
+// Notifies the dialog that |contents| is either responsive or closed.
+// If |contents| shares the same render process as the tab contents
+// this dialog was created for, this function will close the dialog.
+// If |contents| has a different process, this function does nothing.
+- (void)endForTabContents:(TabContents*)contents;
+
+@end  // HungRendererController
+
+
+@interface HungRendererController (JustForTesting)
+- (NSButton*)killButton;
+- (NSButton*)waitButton;
+@end
+
+#endif  // CHROME_BROWSER_COCOA_HUNG_RENDERER_CONTROLLER_H_
diff --git a/chrome/browser/cocoa/hung_renderer_controller.mm b/chrome/browser/cocoa/hung_renderer_controller.mm
new file mode 100644
index 0000000..a9ec7ea
--- /dev/null
+++ b/chrome/browser/cocoa/hung_renderer_controller.mm
@@ -0,0 +1,143 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import <Cocoa/Cocoa.h>
+
+#include "app/l10n_util.h"
+#include "base/mac_util.h"
+#include "base/process_util.h"
+#include "base/sys_string_conversions.h"
+#include "grit/generated_resources.h"
+#include "chrome/browser/browser_list.h"
+#include "chrome/browser/hung_renderer_dialog.h"
+#import "chrome/browser/cocoa/hung_renderer_controller.h"
+#include "chrome/browser/tab_contents/tab_contents.h"
+#include "chrome/common/logging_chrome.h"
+#include "chrome/common/result_codes.h"
+#include "grit/chromium_strings.h"
+
+namespace {
+// We only support showing one of these at a time per app.  The
+// controller owns itself and is released when its window is closed.
+HungRendererController* g_instance = NULL;
+}  // end namespace
+
+@implementation HungRendererController
+
+- (id)initWithWindowNibName:(NSString*)nibName {
+  NSString* nibpath = [mac_util::MainAppBundle() pathForResource:nibName
+                                                          ofType:@"nib"];
+  self = [super initWithWindowNibPath:nibpath owner:self];
+  if (self) {
+    [tableView_ setDataSource:self];
+  }
+  return self;
+}
+
+- (void)dealloc {
+  DCHECK(!g_instance);
+  [super dealloc];
+}
+
+- (void)awakeFromNib {
+  // This is easier than creating a localizer, since we only have one
+  // string to modify.
+  std::wstring productString = l10n_util::GetString(IDS_PRODUCT_NAME);
+  [[self window] setTitle:base::SysWideToNSString(productString)];
+}
+
+- (IBAction)kill:(id)sender {
+  if (hungContents_)
+    base::KillProcess(hungContents_->process()->process().handle(),
+                      ResultCodes::HUNG, false);
+  [[self window] performClose:nil];
+}
+
+- (IBAction)wait:(id)sender {
+  if (hungContents_ && hungContents_->render_view_host())
+    hungContents_->render_view_host()->RestartHangMonitorTimeout();
+  [[self window] performClose:nil];
+}
+
+- (int)numberOfRowsInTableView:(NSTableView *)aTableView {
+  return hungRenderers_.size();
+}
+
+- (id)tableView:(NSTableView*)aTableView
+      objectValueForTableColumn:(NSTableColumn*)column
+            row:(int)rowIndex {
+  // TODO(rohitrao): Add favicons.
+  TabContents* contents = hungRenderers_[rowIndex];
+  string16 title = contents->GetTitle();
+  if (title.empty())
+    title = l10n_util::GetStringUTF16(IDS_TAB_UNTITLED_TITLE);
+  return base::SysUTF16ToNSString(title);
+}
+
+- (void)windowWillClose:(NSNotification*)notification {
+  // We have to reset g_instance before autoreleasing the window,
+  // because we want to avoid reusing the same dialog if someone calls
+  // HungRendererDialog::ShowForTabContents() between the autorelease
+  // call and the actual dealloc.
+  g_instance = nil;
+
+  [self autorelease];
+}
+
+- (void)showForTabContents:(TabContents*)contents {
+  DCHECK(contents);
+  hungContents_ = contents;
+  hungRenderers_.clear();
+  for (TabContentsIterator it; !it.done(); ++it) {
+    if (it->process() == hungContents_->process())
+      hungRenderers_.push_back(*it);
+  }
+  [tableView_ reloadData];
+
+  [[self window] center];
+  [self showWindow:self];
+}
+
+- (void)endForTabContents:(TabContents*)contents {
+  DCHECK(contents);
+  DCHECK(hungContents_);
+  if (hungContents_ && hungContents_->process() == contents->process()) {
+    // If you switch tabs with the dialog open,
+    // HungRendererDialog::EndForTabContents() is called after the
+    // RWHV is hidden.  performClose: runs a nested message loop,
+    // during which the RWHV is drawn at least once, failing a DCHECK
+    // that ensures it is never drawn while hidden.  The workaround
+    // here is to call close, which closes the window immediately with
+    // no nested message loop.
+    [self close];
+  }
+}
+
+@end
+
+@implementation HungRendererController (JustForTesting)
+- (NSButton*)killButton {
+  return killButton_;
+}
+
+- (NSButton*)waitButton {
+  return waitButton_;
+}
+@end
+
+// static
+void HungRendererDialog::ShowForTabContents(TabContents* contents) {
+  if (!logging::DialogsAreSuppressed()) {
+    if (!g_instance)
+      g_instance = [[HungRendererController alloc]
+                     initWithWindowNibName:@"HungRendererDialog"];
+    [g_instance showForTabContents:contents];
+  }
+}
+
+// static
+void HungRendererDialog::HideForTabContents(TabContents* contents) {
+  if (!logging::DialogsAreSuppressed() && g_instance)
+    [g_instance endForTabContents:contents];
+}
diff --git a/chrome/browser/cocoa/hung_renderer_controller_unittest.mm b/chrome/browser/cocoa/hung_renderer_controller_unittest.mm
new file mode 100644
index 0000000..9b29d43
--- /dev/null
+++ b/chrome/browser/cocoa/hung_renderer_controller_unittest.mm
@@ -0,0 +1,51 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import <Cocoa/Cocoa.h>
+
+#import "base/scoped_nsobject.h"
+#include "chrome/browser/cocoa/browser_test_helper.h"
+#include "chrome/browser/cocoa/cocoa_test_helper.h"
+#import "chrome/browser/cocoa/hung_renderer_controller.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/platform_test.h"
+
+namespace {
+
+class HungRendererControllerTest : public PlatformTest {
+ public:
+  virtual void SetUp() {
+    PlatformTest::SetUp();
+    hung_renderer_controller_ = [[HungRendererController alloc]
+                                  initWithWindowNibName:@"HungRendererDialog"];
+  }
+
+  HungRendererController* hung_renderer_controller_;  // owned by its window
+};
+
+TEST_F(HungRendererControllerTest, TestShowAndClose) {
+  // Doesn't test much functionality-wise, but makes sure we can
+  // display and tear down a window.
+  [hung_renderer_controller_ showWindow:nil];
+  [[hung_renderer_controller_ window] performClose:nil];
+}
+
+TEST_F(HungRendererControllerTest, TestKillButton) {
+  // We can't test killing a process because we have no running
+  // process to kill, but we can make sure that pressing the kill
+  // button closes the window.
+  [hung_renderer_controller_ showWindow:nil];
+  [[hung_renderer_controller_ killButton] performClick:nil];
+}
+
+TEST_F(HungRendererControllerTest, TestWaitButton) {
+  // We can't test waiting because we have no running process to wait
+  // for, but we can make sure that pressing the wait button closes
+  // the window.
+  [hung_renderer_controller_ showWindow:nil];
+  [[hung_renderer_controller_ waitButton] performClick:nil];
+}
+
+}  // namespace
+
diff --git a/chrome/chrome.gyp b/chrome/chrome.gyp
index adaf7a0..8a06add 100644
--- a/chrome/chrome.gyp
+++ b/chrome/chrome.gyp
@@ -749,6 +749,8 @@
         'browser/cocoa/gradient_button_cell.mm',
         'browser/cocoa/grow_box_view.h',
         'browser/cocoa/grow_box_view.mm',
+        'browser/cocoa/hung_renderer_controller.h',
+        'browser/cocoa/hung_renderer_controller.mm',
         'browser/cocoa/location_bar_cell.h',
         'browser/cocoa/location_bar_cell.mm',
         'browser/cocoa/location_bar_view_mac.h',
@@ -2367,6 +2369,7 @@
         'app/nibs/en.lproj/DownloadShelf.xib',
         'app/nibs/en.lproj/FindBar.xib',
         'app/nibs/en.lproj/FirstRunDialog.xib',
+        'app/nibs/en.lproj/HungRendererDialog.xib',
         'app/nibs/en.lproj/MainMenu.xib',
         'app/nibs/en.lproj/PageInfo.xib',
         'app/nibs/en.lproj/Preferences.xib',
@@ -2379,6 +2382,7 @@
         'app/theme/close_bar_h.pdf',
         'app/theme/close_bar_p.pdf',
         'app/theme/forward.pdf',
+        'app/theme/frozen_tab.png',
         'app/theme/go.pdf',
         'app/theme/grow_box.png',
         'app/theme/nav.pdf',
@@ -3366,6 +3370,7 @@
         'browser/cocoa/find_bar_bridge_unittest.mm',
         'browser/cocoa/find_bar_cocoa_controller_unittest.mm',
         'browser/cocoa/find_bar_view_unittest.mm',
+        'browser/cocoa/hung_renderer_controller_unittest.mm',
         'browser/cocoa/location_bar_cell_unittest.mm',
         'browser/cocoa/location_bar_view_mac_unittest.mm',
         'browser/cocoa/location_bar_fieldeditor_unittest.mm',
diff --git a/chrome/common/temp_scaffolding_stubs.cc b/chrome/common/temp_scaffolding_stubs.cc
index 146e956..58a7bdc 100644
--- a/chrome/common/temp_scaffolding_stubs.cc
+++ b/chrome/common/temp_scaffolding_stubs.cc
@@ -289,16 +289,6 @@ void DragDownload(const DownloadItem* download, SkBitmap* icon) {
 }  // namespace download_util
 #endif
 
-#if defined(OS_MACOSX)
-void HungRendererDialog::HideForTabContents(TabContents*) {
-  NOTIMPLEMENTED();
-}
-
-void HungRendererDialog::ShowForTabContents(TabContents*) {
-  NOTIMPLEMENTED();
-}
-#endif
-
 #if !defined(TOOLKIT_VIEWS)
 void BrowserList::AllBrowsersClosed() {
   // TODO(port): Close any dependent windows if necessary when the last browser