MacViews: Add WidgetEventGenerator to abstract platform-specific event generation for tests.

ui/views/cocoa/bridged_content_view.mm

 // Copyright 2014 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 "ui/views/cocoa/bridged_content_view.h"
 
 #include "base/logging.h"
 #include "base/strings/sys_string_conversions.h"
 #include "grit/ui_strings.h"
 #include "ui/base/ime/text_input_client.h"
 #include "ui/gfx/canvas_paint_mac.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/views/view.h"
+#include "ui/views/widget/widget.h"
 
 @interface BridgedContentView ()
 
+// Translates the location of |theEvent| to toolkit-views coordinates and passes
+// the event to NativeWidgetMac for handling.
+- (void)handleMouseEvent:(NSEvent*)theEvent;
+
 // Execute a command on the currently focused TextInputClient.
 // |commandId| should be a resource ID from ui_strings.grd.
 - (void)doCommandByID:(int)commandId;
 
 @end
 
 @implementation BridgedContentView
 
 @synthesize hostedView = hostedView_;
 @synthesize textInputClient = textInputClient_;
@@ skipping 10 matching lines @@
 
   return self;
 }
 
 - (void)clearView {
   hostedView_ = NULL;
 }
 
 // BridgedContentView private implementation.
 
+- (void)handleMouseEvent:(NSEvent*)theEvent {
+  if (!hostedView_)
+    return;
+
+  ui::MouseEvent event(theEvent);
+  hostedView_->GetWidget()->OnMouseEvent(&event);
+}
+
 - (void)doCommandByID:(int)commandId {
   if (textInputClient_ && textInputClient_->IsEditingCommandEnabled(commandId))
     textInputClient_->ExecuteEditingCommand(commandId);
 }
 
 // NSView implementation.
 
+- (BOOL)acceptsFirstResponder {
+  return YES;
+}
+
 - (void)setFrameSize:(NSSize)newSize {
   [super setFrameSize:newSize];
   if (!hostedView_)
     return;
 
   hostedView_->SetSize(gfx::Size(newSize.width, newSize.height));
 }
 
 - (void)drawRect:(NSRect)dirtyRect {
   if (!hostedView_)
     return;
 
   gfx::CanvasSkiaPaint canvas(dirtyRect, false /* opaque */);
   hostedView_->Paint(&canvas, views::CullSet());
 }
 
+// NSResponder implementation.
+
 - (void)keyDown:(NSEvent*)theEvent {
   if (textInputClient_)
     [self interpretKeyEvents:@[ theEvent ]];
   else
     [super keyDown:theEvent];
 }
 
+- (void)mouseDown:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)rightMouseDown:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)otherMouseDown:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)mouseUp:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)rightMouseUp:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)otherMouseUp:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)mouseDragged:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)rightMouseDragged:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)otherMouseDragged:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)mouseMoved:(NSEvent*)theEvent {
+  // Note: mouseEntered: and mouseExited: are not handled separately.
+  // |hostedView_| is responsible for converting the move events into entered
+  // and exited events for the view heirarchy.
+  // TODO(tapted): Install/uninstall tracking areas when required so that the
+  // NSView will receive these events outside of tests.
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)scrollWheel:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
 - (void)deleteBackward:(id)sender {
   [self doCommandByID:IDS_DELETE_BACKWARD];
 }
 
 - (void)deleteForward:(id)sender {
   [self doCommandByID:IDS_DELETE_FORWARD];
 }
 
 - (void)moveLeft:(id)sender {
   [self doCommandByID:IDS_MOVE_LEFT];
@@ skipping 88 matching lines @@
 - (void)unmarkText {
   if (textInputClient_)
     textInputClient_->ConfirmCompositionText();
 }
 
 - (NSArray*)validAttributesForMarkedText {
   return @[];
 }
 
 @end