Move renderer plugin code into a new component (re-land)

chrome/renderer/plugins/webview_plugin.cc

-// Copyright (c) 2013 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/renderer/plugins/webview_plugin.h"
-
-#include "base/message_loop/message_loop.h"
-#include "base/metrics/histogram.h"
-#include "content/public/renderer/web_preferences.h"
-#include "skia/ext/platform_canvas.h"
-#include "third_party/WebKit/public/platform/WebSize.h"
-#include "third_party/WebKit/public/platform/WebURL.h"
-#include "third_party/WebKit/public/platform/WebURLRequest.h"
-#include "third_party/WebKit/public/platform/WebURLResponse.h"
-#include "third_party/WebKit/public/web/WebCursorInfo.h"
-#include "third_party/WebKit/public/web/WebDocument.h"
-#include "third_party/WebKit/public/web/WebElement.h"
-#include "third_party/WebKit/public/web/WebFrame.h"
-#include "third_party/WebKit/public/web/WebInputEvent.h"
-#include "third_party/WebKit/public/web/WebPluginContainer.h"
-#include "third_party/WebKit/public/web/WebView.h"
-#include "webkit/common/webpreferences.h"
-
-using WebKit::WebCanvas;
-using WebKit::WebCursorInfo;
-using WebKit::WebDragData;
-using WebKit::WebDragOperationsMask;
-using WebKit::WebFrame;
-using WebKit::WebImage;
-using WebKit::WebInputEvent;
-using WebKit::WebMouseEvent;
-using WebKit::WebPlugin;
-using WebKit::WebPluginContainer;
-using WebKit::WebPoint;
-using WebKit::WebRect;
-using WebKit::WebSize;
-using WebKit::WebString;
-using WebKit::WebURLError;
-using WebKit::WebURLRequest;
-using WebKit::WebURLResponse;
-using WebKit::WebVector;
-using WebKit::WebView;
-
-WebViewPlugin::WebViewPlugin(WebViewPlugin::Delegate* delegate)
-    : delegate_(delegate),
-      container_(NULL),
-      finished_loading_(false) {
-  web_view_ = WebView::create(this);
-  web_view_->initializeMainFrame(this);
-}
-
-// static
-WebViewPlugin* WebViewPlugin::Create(WebViewPlugin::Delegate* delegate,
-                                     const WebPreferences& preferences,
-                                     const std::string& html_data,
-                                     const GURL& url) {
-  WebViewPlugin* plugin = new WebViewPlugin(delegate);
-  WebView* web_view = plugin->web_view();
-  content::ApplyWebPreferences(preferences, web_view);
-  web_view->mainFrame()->loadHTMLString(html_data, url);
-  return plugin;
-}
-
-WebViewPlugin::~WebViewPlugin() {
-  web_view_->close();
-}
-
-void WebViewPlugin::ReplayReceivedData(WebPlugin* plugin) {
-  if (!response_.isNull()) {
-    plugin->didReceiveResponse(response_);
-    size_t total_bytes = 0;
-    for (std::list<std::string>::iterator it = data_.begin();
-        it != data_.end(); ++it) {
-      plugin->didReceiveData(it->c_str(), it->length());
-      total_bytes += it->length();
-    }
-    UMA_HISTOGRAM_MEMORY_KB("PluginDocument.Memory", (total_bytes / 1024));
-    UMA_HISTOGRAM_COUNTS("PluginDocument.NumChunks", data_.size());
-  }
-  if (finished_loading_) {
-    plugin->didFinishLoading();
-  }
-  if (error_) {
-    plugin->didFailLoading(*error_);
-  }
-}
-
-void WebViewPlugin::RestoreTitleText() {
-  if (container_)
-    container_->element().setAttribute("title", old_title_);
-}
-
-WebPluginContainer* WebViewPlugin::container() const {
-  return container_;
-}
-
-bool WebViewPlugin::initialize(WebPluginContainer* container) {
-  container_ = container;
-  if (container_)
-    old_title_ = container_->element().getAttribute("title");
-  return true;
-}
-
-void WebViewPlugin::destroy() {
-  if (delegate_) {
-    delegate_->WillDestroyPlugin();
-    delegate_ = NULL;
-  }
-  container_ = NULL;
-  base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
-}
-
-NPObject* WebViewPlugin::scriptableObject() {
-  return NULL;
-}
-
-struct _NPP* WebViewPlugin::pluginNPP() {
-  return NULL;
-}
-
-bool WebViewPlugin::getFormValue(WebString& value) {
-  return false;
-}
-
-void WebViewPlugin::paint(WebCanvas* canvas, const WebRect& rect) {
-  gfx::Rect paint_rect = gfx::IntersectRects(rect_, rect);
-  if (paint_rect.IsEmpty())
-    return;
-
-  paint_rect.Offset(-rect_.x(), -rect_.y());
-
-  canvas->translate(SkIntToScalar(rect_.x()), SkIntToScalar(rect_.y()));
-  canvas->save();
-
-  web_view_->layout();
-  web_view_->paint(canvas, paint_rect);
-
-  canvas->restore();
-}
-
-// Coordinates are relative to the containing window.
-void WebViewPlugin::updateGeometry(
-    const WebRect& frame_rect, const WebRect& clip_rect,
-    const WebVector<WebRect>& cut_out_rects, bool is_visible) {
-  if (static_cast<gfx::Rect>(frame_rect) != rect_) {
-    rect_ = frame_rect;
-    web_view_->resize(WebSize(frame_rect.width, frame_rect.height));
-  }
-}
-
-bool WebViewPlugin::acceptsInputEvents() {
-  return true;
-}
-
-bool WebViewPlugin::handleInputEvent(const WebInputEvent& event,
-                                     WebCursorInfo& cursor) {
-  // For tap events, don't handle them. They will be converted to
-  // mouse events later and passed to here.
-  if (event.type == WebInputEvent::GestureTap)
-    return false;
-
-  if (event.type == WebInputEvent::ContextMenu) {
-    if (delegate_) {
-      const WebMouseEvent& mouse_event =
-          reinterpret_cast<const WebMouseEvent&>(event);
-      delegate_->ShowContextMenu(mouse_event);
-    }
-    return true;
-  }
-  current_cursor_ = cursor;
-  bool handled = web_view_->handleInputEvent(event);
-  cursor = current_cursor_;
-
-  return handled;
-}
-
-void WebViewPlugin::didReceiveResponse(const WebURLResponse& response) {
-  DCHECK(response_.isNull());
-  response_ = response;
-}
-
-void WebViewPlugin::didReceiveData(const char* data, int data_length) {
-  data_.push_back(std::string(data, data_length));
-}
-
-void WebViewPlugin::didFinishLoading() {
-  DCHECK(!finished_loading_);
-  finished_loading_ = true;
-}
-
-void WebViewPlugin::didFailLoading(const WebURLError& error) {
-  DCHECK(!error_.get());
-  error_.reset(new WebURLError(error));
-}
-
-bool WebViewPlugin::acceptsLoadDrops() {
-  return false;
-}
-
-void WebViewPlugin::setToolTipText(const WebString& text,
-                                   WebKit::WebTextDirection hint) {
-  if (container_)
-    container_->element().setAttribute("title", text);
-}
-
-void WebViewPlugin::startDragging(WebFrame*,
-                                  const WebDragData&,
-                                  WebDragOperationsMask,
-                                  const WebImage&,
-                                  const WebPoint&) {
-  // Immediately stop dragging.
-  web_view_->dragSourceSystemDragEnded();
-}
-
-void WebViewPlugin::didInvalidateRect(const WebRect& rect) {
-  if (container_)
-    container_->invalidateRect(rect);
-}
-
-void WebViewPlugin::didChangeCursor(const WebCursorInfo& cursor) {
-  current_cursor_ = cursor;
-}
-
-void WebViewPlugin::didClearWindowObject(WebFrame* frame) {
-  if (delegate_)
-    delegate_->BindWebFrame(frame);
-}
-
-void WebViewPlugin::didReceiveResponse(WebFrame* frame,
-                                       unsigned identifier,
-                                       const WebURLResponse& response) {
-  WebFrameClient::didReceiveResponse(frame, identifier, response);
-}