1// Copyright 2013 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "components/plugins/renderer/webview_plugin.h" 6 7#include "base/message_loop/message_loop.h" 8#include "base/metrics/histogram.h" 9#include "base/numerics/safe_conversions.h" 10#include "content/public/common/web_preferences.h" 11#include "content/public/renderer/render_view.h" 12#include "skia/ext/platform_canvas.h" 13#include "third_party/WebKit/public/platform/WebSize.h" 14#include "third_party/WebKit/public/platform/WebURL.h" 15#include "third_party/WebKit/public/platform/WebURLRequest.h" 16#include "third_party/WebKit/public/platform/WebURLResponse.h" 17#include "third_party/WebKit/public/web/WebDocument.h" 18#include "third_party/WebKit/public/web/WebElement.h" 19#include "third_party/WebKit/public/web/WebInputEvent.h" 20#include "third_party/WebKit/public/web/WebLocalFrame.h" 21#include "third_party/WebKit/public/web/WebPluginContainer.h" 22#include "third_party/WebKit/public/web/WebView.h" 23 24using blink::WebCanvas; 25using blink::WebCursorInfo; 26using blink::WebDragData; 27using blink::WebDragOperationsMask; 28using blink::WebImage; 29using blink::WebInputEvent; 30using blink::WebLocalFrame; 31using blink::WebMouseEvent; 32using blink::WebPlugin; 33using blink::WebPluginContainer; 34using blink::WebPoint; 35using blink::WebRect; 36using blink::WebSize; 37using blink::WebString; 38using blink::WebURLError; 39using blink::WebURLRequest; 40using blink::WebURLResponse; 41using blink::WebVector; 42using blink::WebView; 43using content::WebPreferences; 44 45WebViewPlugin::WebViewPlugin(WebViewPlugin::Delegate* delegate, 46 const WebPreferences& preferences) 47 : delegate_(delegate), 48 container_(NULL), 49 web_view_(WebView::create(this)), 50 finished_loading_(false), 51 focused_(false) { 52 // ApplyWebPreferences before making a WebLocalFrame so that the frame sees a 53 // consistent view of our preferences. 54 content::RenderView::ApplyWebPreferences(preferences, web_view_); 55 web_frame_ = WebLocalFrame::create(this); 56 web_view_->setMainFrame(web_frame_); 57} 58 59// static 60WebViewPlugin* WebViewPlugin::Create(WebViewPlugin::Delegate* delegate, 61 const WebPreferences& preferences, 62 const std::string& html_data, 63 const GURL& url) { 64 WebViewPlugin* plugin = new WebViewPlugin(delegate, preferences); 65 plugin->web_view()->mainFrame()->loadHTMLString(html_data, url); 66 return plugin; 67} 68 69WebViewPlugin::~WebViewPlugin() { 70 web_view_->close(); 71 web_frame_->close(); 72} 73 74void WebViewPlugin::ReplayReceivedData(WebPlugin* plugin) { 75 if (!response_.isNull()) { 76 plugin->didReceiveResponse(response_); 77 size_t total_bytes = 0; 78 for (std::list<std::string>::iterator it = data_.begin(); it != data_.end(); 79 ++it) { 80 plugin->didReceiveData( 81 it->c_str(), base::checked_cast<int, size_t>(it->length())); 82 total_bytes += it->length(); 83 } 84 UMA_HISTOGRAM_MEMORY_KB( 85 "PluginDocument.Memory", 86 (base::checked_cast<int, size_t>(total_bytes / 1024))); 87 UMA_HISTOGRAM_COUNTS( 88 "PluginDocument.NumChunks", 89 (base::checked_cast<int, size_t>(data_.size()))); 90 } 91 // We need to transfer the |focused_| to new plugin after it loaded. 92 if (focused_) { 93 plugin->updateFocus(true); 94 } 95 if (finished_loading_) { 96 plugin->didFinishLoading(); 97 } 98 if (error_) { 99 plugin->didFailLoading(*error_); 100 } 101} 102 103void WebViewPlugin::RestoreTitleText() { 104 if (container_) 105 container_->element().setAttribute("title", old_title_); 106} 107 108WebPluginContainer* WebViewPlugin::container() const { return container_; } 109 110bool WebViewPlugin::initialize(WebPluginContainer* container) { 111 container_ = container; 112 if (container_) 113 old_title_ = container_->element().getAttribute("title"); 114 return true; 115} 116 117void WebViewPlugin::destroy() { 118 if (delegate_) { 119 delegate_->PluginDestroyed(); 120 delegate_ = NULL; 121 } 122 container_ = NULL; 123 base::MessageLoop::current()->DeleteSoon(FROM_HERE, this); 124} 125 126NPObject* WebViewPlugin::scriptableObject() { return NULL; } 127 128struct _NPP* WebViewPlugin::pluginNPP() { return NULL; } 129 130bool WebViewPlugin::getFormValue(WebString& value) { return false; } 131 132void WebViewPlugin::paint(WebCanvas* canvas, const WebRect& rect) { 133 gfx::Rect paint_rect = gfx::IntersectRects(rect_, rect); 134 if (paint_rect.IsEmpty()) 135 return; 136 137 paint_rect.Offset(-rect_.x(), -rect_.y()); 138 139 canvas->translate(SkIntToScalar(rect_.x()), SkIntToScalar(rect_.y())); 140 canvas->save(); 141 142 web_view_->layout(); 143 web_view_->paint(canvas, paint_rect); 144 145 canvas->restore(); 146} 147 148// Coordinates are relative to the containing window. 149void WebViewPlugin::updateGeometry(const WebRect& frame_rect, 150 const WebRect& clip_rect, 151 const WebVector<WebRect>& cut_out_rects, 152 bool is_visible) { 153 if (static_cast<gfx::Rect>(frame_rect) != rect_) { 154 rect_ = frame_rect; 155 WebSize newSize(frame_rect.width, frame_rect.height); 156 web_view_->resize(newSize); 157 } 158} 159 160void WebViewPlugin::updateFocus(bool focused) { 161 focused_ = focused; 162} 163 164bool WebViewPlugin::acceptsInputEvents() { return true; } 165 166bool WebViewPlugin::handleInputEvent(const WebInputEvent& event, 167 WebCursorInfo& cursor) { 168 // For tap events, don't handle them. They will be converted to 169 // mouse events later and passed to here. 170 if (event.type == WebInputEvent::GestureTap) 171 return false; 172 173 if (event.type == WebInputEvent::ContextMenu) { 174 if (delegate_) { 175 const WebMouseEvent& mouse_event = 176 reinterpret_cast<const WebMouseEvent&>(event); 177 delegate_->ShowContextMenu(mouse_event); 178 } 179 return true; 180 } 181 current_cursor_ = cursor; 182 bool handled = web_view_->handleInputEvent(event); 183 cursor = current_cursor_; 184 185 return handled; 186} 187 188void WebViewPlugin::didReceiveResponse(const WebURLResponse& response) { 189 DCHECK(response_.isNull()); 190 response_ = response; 191} 192 193void WebViewPlugin::didReceiveData(const char* data, int data_length) { 194 data_.push_back(std::string(data, data_length)); 195} 196 197void WebViewPlugin::didFinishLoading() { 198 DCHECK(!finished_loading_); 199 finished_loading_ = true; 200} 201 202void WebViewPlugin::didFailLoading(const WebURLError& error) { 203 DCHECK(!error_.get()); 204 error_.reset(new WebURLError(error)); 205} 206 207bool WebViewPlugin::acceptsLoadDrops() { return false; } 208 209void WebViewPlugin::setToolTipText(const WebString& text, 210 blink::WebTextDirection hint) { 211 if (container_) 212 container_->element().setAttribute("title", text); 213} 214 215void WebViewPlugin::startDragging(WebLocalFrame*, 216 const WebDragData&, 217 WebDragOperationsMask, 218 const WebImage&, 219 const WebPoint&) { 220 // Immediately stop dragging. 221 web_view_->dragSourceSystemDragEnded(); 222} 223 224bool WebViewPlugin::allowsBrokenNullLayerTreeView() const { 225 return true; 226} 227 228void WebViewPlugin::didInvalidateRect(const WebRect& rect) { 229 if (container_) 230 container_->invalidateRect(rect); 231} 232 233void WebViewPlugin::didChangeCursor(const WebCursorInfo& cursor) { 234 current_cursor_ = cursor; 235} 236 237void WebViewPlugin::scheduleAnimation() { 238 if (container_) 239 container_->invalidate(); 240} 241 242void WebViewPlugin::didClearWindowObject(WebLocalFrame* frame) { 243 if (delegate_) 244 delegate_->BindWebFrame(frame); 245} 246 247void WebViewPlugin::didReceiveResponse(WebLocalFrame* frame, 248 unsigned identifier, 249 const WebURLResponse& response) { 250 WebFrameClient::didReceiveResponse(frame, identifier, response); 251} 252