GuestView: Move Disable Drag and Drop Out to Chrome

chrome/browser/guest_view/guest_view_base.cc

 // 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.
 
 #include "chrome/browser/guest_view/guest_view_base.h"
 
 #include "base/lazy_instance.h"
+#include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/guest_view/ad_view/ad_view_guest.h"
 #include "chrome/browser/guest_view/guest_view_constants.h"
 #include "chrome/browser/guest_view/guest_view_manager.h"
 #include "chrome/browser/guest_view/web_view/web_view_guest.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/content_settings.h"
+#include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
+#include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/url_constants.h"
 #include "extensions/browser/event_router.h"
 #include "net/base/escape.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 
 using content::WebContents;
 
 namespace {
 
@@ skipping 145 matching lines @@
                                   ContentSettingsPattern::Wildcard(),
                                   CONTENT_SETTING_ALLOW,
                                   std::string(),
                                   incognito));
 }
 
 base::WeakPtr<GuestViewBase> GuestViewBase::AsWeakPtr() {
   return weak_ptr_factory_.GetWeakPtr();
 }
 
+bool GuestViewBase::IsDragAndDropEnabled() const {
+  return false;
+}
+
 void GuestViewBase::Attach(content::WebContents* embedder_web_contents,
                            const base::DictionaryValue& args) {
   embedder_web_contents_ = embedder_web_contents;
   embedder_web_contents_observer_.reset(
       new EmbedderWebContentsObserver(this));
   embedder_render_process_id_ =
       embedder_web_contents->GetRenderProcessHost()->GetID();
   args.GetInteger(guestview::kParameterInstanceId, &view_instance_id_);
   extra_params_.reset(args.DeepCopy());
 
@@ skipping 26 matching lines @@
     return;
   }
   opener_ = base::WeakPtr<GuestViewBase>();
 }
 
 void GuestViewBase::RegisterDestructionCallback(
     const DestructionCallback& callback) {
   destruction_callback_ = callback;
 }
 
+void GuestViewBase::DidStopLoading(content::RenderViewHost* render_view_host) {
+  if (!IsDragAndDropEnabled()) {
+    const char script[] = "window.addEventListener('dragstart', function() { "
+                          "  window.event.preventDefault(); "
+                          "});";
+    render_view_host->GetMainFrame()->ExecuteJavaScript(
+        base::ASCIIToUTF16(script));
+  }
+  DidStopLoading();
+}
+
 void GuestViewBase::WebContentsDestroyed() {
   delete this;
 }
 
 bool GuestViewBase::ShouldFocusPageAfterCrash() {
   // Focus is managed elsewhere.
   return false;
 }
 
 bool GuestViewBase::PreHandleGestureEvent(content::WebContents* source,
@@ skipping 45 matching lines @@
 
 void GuestViewBase::SendQueuedEvents() {
   if (!attached())
     return;
   while (!pending_events_.empty()) {
     linked_ptr<Event> event_ptr = pending_events_.front();
     pending_events_.pop_front();
     DispatchEvent(event_ptr.release());
   }
 }