Implement HTML selects as native Cocoa controls for Chrome

chrome/browser/renderer_host/render_widget_host_view_mac.mm

 // Copyright (c) 2006-2008 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.
 
 #include "chrome/browser/renderer_host/render_widget_host_view_mac.h"
 
 #include "base/histogram.h"
 #include "base/sys_string_conversions.h"
 #include "chrome/browser/browser_trial.h"
 #include "chrome/browser/renderer_host/backing_store.h"
 #include "chrome/browser/renderer_host/render_process_host.h"
 #include "chrome/browser/renderer_host/render_widget_host.h"
 #include "chrome/common/native_web_keyboard_event.h"
 #include "skia/ext/platform_canvas.h"
 #include "third_party/WebKit/WebKit/chromium/public/mac/WebInputEventFactory.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebInputEvent.h"
+#include "webkit/glue/webmenurunner_mac.h"
 
 using WebKit::WebInputEventFactory;
 using WebKit::WebMouseEvent;
 using WebKit::WebMouseWheelEvent;
 
 @interface RenderWidgetHostViewCocoa (Private)
 - (id)initWithRenderWidgetHostViewMac:(RenderWidgetHostViewMac*)r;
 @end
 
 namespace {
@@ skipping 12 matching lines @@
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostViewMac, public:
 
 RenderWidgetHostViewMac::RenderWidgetHostViewMac(RenderWidgetHost* widget)
     : render_widget_host_(widget),
       about_to_validate_and_paint_(false),
       is_loading_(false),
       is_hidden_(false),
-      shutdown_factory_(this) {
+      shutdown_factory_(this),
+      parent_view_(NULL) {
   cocoa_view_ = [[[RenderWidgetHostViewCocoa alloc]
                   initWithRenderWidgetHostViewMac:this] autorelease];
   render_widget_host_->set_view(this);
 }
 
 RenderWidgetHostViewMac::~RenderWidgetHostViewMac() {
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostViewMac, RenderWidgetHostView implementation:
@@ skipping 200 matching lines @@
     NSString* tooltip_nsstring = base::SysWideToNSString(tooltip_text_);
     [cocoa_view_ setToolTip:tooltip_nsstring];
   }
 }
 
 BackingStore* RenderWidgetHostViewMac::AllocBackingStore(
     const gfx::Size& size) {
   return new BackingStore(size);
 }
 
+// Display a popup menu for WebKit using Cocoa widgets.
+void RenderWidgetHostViewMac::ShowPopupWithItems(
+    gfx::Rect bounds,
+    int item_height,
+    int selected_item,
+    const std::vector<WebMenuItem>& items) {
+  NSRect view_rect = [cocoa_view_ bounds];
+  NSRect position = NSMakeRect(bounds.x(), bounds.y() - bounds.height(),
+                               bounds.width(), bounds.height());
+
+  // Display the menu.
+  WebMenuRunner* menu_runner =
+      [[[WebMenuRunner alloc] initWithItems:items] autorelease];
+
+  [menu_runner runMenuInView:parent_view_
+                  withBounds:position
+                initialIndex:selected_item];
+
+  int window_num = [[parent_view_ window] windowNumber];
+  NSEvent* event = CreateEventForMenuAction([menu_runner menuItemWasChosen],
+                                            window_num, item_height,
+                                            [menu_runner indexOfSelectedItem],
+                                            position, view_rect);
+
+  if ([menu_runner menuItemWasChosen]) {
+    // Simulate a menu selection event.
+    const WebMouseEvent& mouse_event =
+        WebInputEventFactory::mouseEvent(event, cocoa_view_);
+    render_widget_host_->ForwardMouseEvent(mouse_event);
+  } else {
+    // Simulate a menu dismiss event.
+    NativeWebKeyboardEvent keyboard_event(event);
+    render_widget_host_->ForwardKeyboardEvent(keyboard_event);
+  }
+}
+
 void RenderWidgetHostViewMac::KillSelf() {
   if (shutdown_factory_.empty()) {
     [cocoa_view_ setHidden:YES];
     MessageLoop::current()->PostTask(FROM_HERE,
         shutdown_factory_.NewRunnableMethod(
             &RenderWidgetHostViewMac::ShutdownHost));
   }
 }
 
 void RenderWidgetHostViewMac::ShutdownHost() {
@@ skipping 141 matching lines @@
 - (BOOL)resignFirstResponder {
   if (closeOnDeactivate_)
     renderWidgetHostView_->KillSelf();
 
   renderWidgetHostView_->render_widget_host_->Blur();
 
   return YES;
 }
 
 @end