Mojo: Partially implement input events in html_viewer.

This gets positioned mouse events working, including hover effects and selection. This does not solve the navigation issue though; we crash on a CHECK in url_loader_impl.cc.

BUG=387172

Review URL: https://codereview.chromium.org/348373003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@279591 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 99 insertions, 4 deletions

diff --git a/mojo/examples/html_viewer/DEPS b/mojo/examples/html_viewer/DEPS
index 83af040..059a405 100644
--- a/mojo/examples/html_viewer/DEPS
+++ b/mojo/examples/html_viewer/DEPS
@@ -1,6 +1,7 @@
 include_rules = [
-  "+skia",
   "+net/base",
-  "+third_party/skia/include",
+  "+skia",
   "+third_party/WebKit/public",
+  "+third_party/skia/include",
+  "+ui/events",
 ]
diff --git a/mojo/examples/html_viewer/html_document_view.cc b/mojo/examples/html_viewer/html_document_view.cc
index da21d3d..b234c15 100644
--- a/mojo/examples/html_viewer/html_document_view.cc
+++ b/mojo/examples/html_viewer/html_document_view.cc
@@ -8,14 +8,17 @@
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/thread_task_runner_handle.h"
+#include "base/time/time.h"
 #include "mojo/examples/html_viewer/webstoragenamespace_impl.h"
 #include "mojo/examples/html_viewer/weburlloader_impl.h"
 #include "mojo/services/public/cpp/view_manager/node.h"
 #include "mojo/services/public/cpp/view_manager/view.h"
+#include "mojo/services/public/cpp/view_manager/view_observer.h"
 #include "skia/ext/refptr.h"
 #include "third_party/WebKit/public/web/WebConsoleMessage.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebElement.h"
+#include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 #include "third_party/WebKit/public/web/WebScriptSource.h"
 #include "third_party/WebKit/public/web/WebSettings.h"
@@ -23,11 +26,42 @@
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/skia/include/core/SkDevice.h"
+#include "ui/events/event_constants.h"
 
 namespace mojo {
 namespace examples {
 namespace {
 
+int EventFlagsToWebEventModifiers(int flags) {
+  int modifiers = 0;
+
+  if (flags & ui::EF_SHIFT_DOWN)
+    modifiers |= blink::WebInputEvent::ShiftKey;
+  if (flags & ui::EF_CONTROL_DOWN)
+    modifiers |= blink::WebInputEvent::ControlKey;
+  if (flags & ui::EF_ALT_DOWN)
+    modifiers |= blink::WebInputEvent::AltKey;
+  // TODO(beng): MetaKey/META_MASK
+  if (flags & ui::EF_LEFT_MOUSE_BUTTON)
+    modifiers |= blink::WebInputEvent::LeftButtonDown;
+  if (flags & ui::EF_MIDDLE_MOUSE_BUTTON)
+    modifiers |= blink::WebInputEvent::MiddleButtonDown;
+  if (flags & ui::EF_RIGHT_MOUSE_BUTTON)
+    modifiers |= blink::WebInputEvent::RightButtonDown;
+  if (flags & ui::EF_CAPS_LOCK_DOWN)
+    modifiers |= blink::WebInputEvent::CapsLockOn;
+  return modifiers;
+}
+
+int GetClickCount(int flags) {
+  if (flags & ui::EF_IS_TRIPLE_CLICK)
+    return 3;
+  else if (flags & ui::EF_IS_DOUBLE_CLICK)
+    return 2;
+
+  return 1;
+}
+
 void ConfigureSettings(blink::WebSettings* settings) {
   settings->setAcceleratedCompositingEnabled(false);
   settings->setDefaultFixedFontSize(13);
@@ -44,9 +78,12 @@ HTMLDocumentView::HTMLDocumentView(view_manager::ViewManager* view_manager)
       web_view_(NULL),
       repaint_pending_(false),
       weak_factory_(this) {
+  view_->AddObserver(this);
 }
 
 HTMLDocumentView::~HTMLDocumentView() {
+  view_->RemoveObserver(this);
+
   if (web_view_)
     web_view_->close();
 }
@@ -111,6 +148,56 @@ void HTMLDocumentView::didAddMessageToConsole(
   printf("### console: %s\n", std::string(message.text.utf8()).c_str());
 }
 
+void HTMLDocumentView::OnViewInputEvent(view_manager::View* view,
+                                        const EventPtr& event) {
+  if (event->action != ui::ET_MOUSE_PRESSED &&
+      event->action != ui::ET_MOUSE_RELEASED &&
+      event->action != ui::ET_MOUSE_ENTERED &&
+      event->action != ui::ET_MOUSE_EXITED &&
+      event->action != ui::ET_MOUSE_MOVED &&
+      event->action != ui::ET_MOUSE_DRAGGED) {
+    return;
+  }
+
+  blink::WebMouseEvent web_event;
+  web_event.x = event->location->x;
+  web_event.y = event->location->y;
+
+  web_event.modifiers = EventFlagsToWebEventModifiers(event->flags);
+  web_event.timeStampSeconds =
+      base::TimeDelta::FromInternalValue(event->time_stamp).InSecondsF();
+
+  web_event.button = blink::WebMouseEvent::ButtonNone;
+  if (event->flags & ui::EF_LEFT_MOUSE_BUTTON)
+    web_event.button = blink::WebMouseEvent::ButtonLeft;
+  if (event->flags & ui::EF_MIDDLE_MOUSE_BUTTON)
+    web_event.button = blink::WebMouseEvent::ButtonMiddle;
+  if (event->flags & ui::EF_RIGHT_MOUSE_BUTTON)
+    web_event.button = blink::WebMouseEvent::ButtonRight;
+
+  switch (event->action) {
+    case ui::ET_MOUSE_PRESSED:
+      web_event.type = blink::WebInputEvent::MouseDown;
+      web_event.clickCount = GetClickCount(event->flags);
+      break;
+    case ui::ET_MOUSE_RELEASED:
+      web_event.type = blink::WebInputEvent::MouseUp;
+      web_event.clickCount = GetClickCount(event->flags);
+      break;
+    case ui::ET_MOUSE_ENTERED:
+    case ui::ET_MOUSE_EXITED:
+    case ui::ET_MOUSE_MOVED:
+    case ui::ET_MOUSE_DRAGGED:
+      web_event.type = blink::WebInputEvent::MouseMove;
+      break;
+    default:
+      NOTIMPLEMENTED() << "Received unexpected event: " << event->action;
+      break;
+  }
+
+  web_view_->handleInputEvent(web_event);
+}
+
 void HTMLDocumentView::Repaint() {
   repaint_pending_ = false;
 
diff --git a/mojo/examples/html_viewer/html_document_view.h b/mojo/examples/html_viewer/html_document_view.h
index 8bea2d2..772a903 100644
--- a/mojo/examples/html_viewer/html_document_view.h
+++ b/mojo/examples/html_viewer/html_document_view.h
@@ -5,7 +5,9 @@
 #ifndef MOJO_EXAMPLES_HTML_VIEWER_HTML_DOCUMENT_VIEW_H_
 #define MOJO_EXAMPLES_HTML_VIEWER_HTML_DOCUMENT_VIEW_H_
 
+#include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
+#include "mojo/services/public/cpp/view_manager/view_observer.h"
 #include "mojo/services/public/interfaces/network/url_loader.mojom.h"
 #include "third_party/WebKit/public/web/WebFrameClient.h"
 #include "third_party/WebKit/public/web/WebViewClient.h"
@@ -22,7 +24,8 @@ namespace examples {
 
 // A view for a single HTML document.
 class HTMLDocumentView : public blink::WebViewClient,
-                         public blink::WebFrameClient {
+                         public blink::WebFrameClient,
+                         public view_manager::ViewObserver {
  public:
   explicit HTMLDocumentView(view_manager::ViewManager* view_manager);
   virtual ~HTMLDocumentView();
@@ -47,6 +50,10 @@ class HTMLDocumentView : public blink::WebViewClient,
       unsigned source_line,
       const blink::WebString& stack_trace);
 
+  // ViewObserver methods:
+  virtual void OnViewInputEvent(view_manager::View* view,
+                                const EventPtr& event) OVERRIDE;
+
   void Repaint();
 
   view_manager::ViewManager* view_manager_;
diff --git a/mojo/examples/window_manager/window_manager.cc b/mojo/examples/window_manager/window_manager.cc
index 0c5cb12..201af4c 100644
--- a/mojo/examples/window_manager/window_manager.cc
+++ b/mojo/examples/window_manager/window_manager.cc
@@ -118,7 +118,7 @@ class WindowManager : public Application,
     ViewManager::Create(this, this);
   }
 
-    // Overridden from ViewObserver:
+  // Overridden from ViewObserver:
   virtual void OnViewInputEvent(View* view, const EventPtr& event) OVERRIDE {
     if (event->action == ui::ET_MOUSE_RELEASED) {
       std::string app_url;