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/renderer/web_preferences.h" 11 #include "skia/ext/platform_canvas.h" 12 #include "third_party/WebKit/public/platform/WebSize.h" 13 #include "third_party/WebKit/public/platform/WebURL.h" 14 #include "third_party/WebKit/public/platform/WebURLRequest.h" 15 #include "third_party/WebKit/public/platform/WebURLResponse.h" 16 #include "third_party/WebKit/public/web/WebDocument.h" 17 #include "third_party/WebKit/public/web/WebElement.h" 18 #include "third_party/WebKit/public/web/WebInputEvent.h" 19 #include "third_party/WebKit/public/web/WebLocalFrame.h" 20 #include "third_party/WebKit/public/web/WebPluginContainer.h" 21 #include "third_party/WebKit/public/web/WebView.h" 22 #include "webkit/common/webpreferences.h" 23 24 using blink::WebCanvas; 25 using blink::WebCursorInfo; 26 using blink::WebDragData; 27 using blink::WebDragOperationsMask; 28 using blink::WebImage; 29 using blink::WebInputEvent; 30 using blink::WebLocalFrame; 31 using blink::WebMouseEvent; 32 using blink::WebPlugin; 33 using blink::WebPluginContainer; 34 using blink::WebPoint; 35 using blink::WebRect; 36 using blink::WebSize; 37 using blink::WebString; 38 using blink::WebURLError; 39 using blink::WebURLRequest; 40 using blink::WebURLResponse; 41 using blink::WebVector; 42 using blink::WebView; 43 44 WebViewPlugin::WebViewPlugin(WebViewPlugin::Delegate* delegate, 45 const WebPreferences& preferences) 46 : delegate_(delegate), 47 container_(NULL), 48 web_view_(WebView::create(this)), 49 finished_loading_(false), 50 focused_(false) { 51 // ApplyWebPreferences before making a WebLocalFrame so that the frame sees a 52 // consistent view of our preferences. 53 content::ApplyWebPreferences(preferences, web_view_); 54 web_frame_ = WebLocalFrame::create(this); 55 web_view_->setMainFrame(web_frame_); 56 } 57 58 // static 59 WebViewPlugin* WebViewPlugin::Create(WebViewPlugin::Delegate* delegate, 60 const WebPreferences& preferences, 61 const std::string& html_data, 62 const GURL& url) { 63 WebViewPlugin* plugin = new WebViewPlugin(delegate, preferences); 64 plugin->web_view()->mainFrame()->loadHTMLString(html_data, url); 65 return plugin; 66 } 67 68 WebViewPlugin::~WebViewPlugin() { 69 web_view_->close(); 70 web_frame_->close(); 71 } 72 73 void WebViewPlugin::ReplayReceivedData(WebPlugin* plugin) { 74 if (!response_.isNull()) { 75 plugin->didReceiveResponse(response_); 76 size_t total_bytes = 0; 77 for (std::list<std::string>::iterator it = data_.begin(); it != data_.end(); 78 ++it) { 79 plugin->didReceiveData( 80 it->c_str(), base::checked_cast<int, size_t>(it->length())); 81 total_bytes += it->length(); 82 } 83 UMA_HISTOGRAM_MEMORY_KB( 84 "PluginDocument.Memory", 85 (base::checked_cast<int, size_t>(total_bytes / 1024))); 86 UMA_HISTOGRAM_COUNTS( 87 "PluginDocument.NumChunks", 88 (base::checked_cast<int, size_t>(data_.size()))); 89 } 90 // We need to transfer the |focused_| to new plugin after it loaded. 91 if (focused_) { 92 plugin->updateFocus(true); 93 } 94 if (finished_loading_) { 95 plugin->didFinishLoading(); 96 } 97 if (error_) { 98 plugin->didFailLoading(*error_); 99 } 100 } 101 102 void WebViewPlugin::RestoreTitleText() { 103 if (container_) 104 container_->element().setAttribute("title", old_title_); 105 } 106 107 WebPluginContainer* WebViewPlugin::container() const { return container_; } 108 109 bool WebViewPlugin::initialize(WebPluginContainer* container) { 110 container_ = container; 111 if (container_) 112 old_title_ = container_->element().getAttribute("title"); 113 return true; 114 } 115 116 void WebViewPlugin::destroy() { 117 if (delegate_) { 118 delegate_->PluginDestroyed(); 119 delegate_ = NULL; 120 } 121 container_ = NULL; 122 base::MessageLoop::current()->DeleteSoon(FROM_HERE, this); 123 } 124 125 NPObject* WebViewPlugin::scriptableObject() { return NULL; } 126 127 struct _NPP* WebViewPlugin::pluginNPP() { return NULL; } 128 129 bool WebViewPlugin::getFormValue(WebString& value) { return false; } 130 131 void WebViewPlugin::paint(WebCanvas* canvas, const WebRect& rect) { 132 gfx::Rect paint_rect = gfx::IntersectRects(rect_, rect); 133 if (paint_rect.IsEmpty()) 134 return; 135 136 paint_rect.Offset(-rect_.x(), -rect_.y()); 137 138 canvas->translate(SkIntToScalar(rect_.x()), SkIntToScalar(rect_.y())); 139 canvas->save(); 140 141 web_view_->layout(); 142 web_view_->paint(canvas, paint_rect); 143 144 canvas->restore(); 145 } 146 147 // Coordinates are relative to the containing window. 148 void WebViewPlugin::updateGeometry(const WebRect& frame_rect, 149 const WebRect& clip_rect, 150 const WebVector<WebRect>& cut_out_rects, 151 bool is_visible) { 152 if (static_cast<gfx::Rect>(frame_rect) != rect_) { 153 rect_ = frame_rect; 154 WebSize newSize(frame_rect.width, frame_rect.height); 155 web_view_->setFixedLayoutSize(newSize); 156 web_view_->resize(newSize); 157 } 158 } 159 160 void WebViewPlugin::updateFocus(bool focused) { 161 focused_ = focused; 162 } 163 164 bool WebViewPlugin::acceptsInputEvents() { return true; } 165 166 bool 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 } 187 188 void WebViewPlugin::didReceiveResponse(const WebURLResponse& response) { 189 DCHECK(response_.isNull()); 190 response_ = response; 191 } 192 193 void WebViewPlugin::didReceiveData(const char* data, int data_length) { 194 data_.push_back(std::string(data, data_length)); 195 } 196 197 void WebViewPlugin::didFinishLoading() { 198 DCHECK(!finished_loading_); 199 finished_loading_ = true; 200 } 201 202 void WebViewPlugin::didFailLoading(const WebURLError& error) { 203 DCHECK(!error_.get()); 204 error_.reset(new WebURLError(error)); 205 } 206 207 bool WebViewPlugin::acceptsLoadDrops() { return false; } 208 209 void WebViewPlugin::setToolTipText(const WebString& text, 210 blink::WebTextDirection hint) { 211 if (container_) 212 container_->element().setAttribute("title", text); 213 } 214 215 void WebViewPlugin::startDragging(WebLocalFrame*, 216 const WebDragData&, 217 WebDragOperationsMask, 218 const WebImage&, 219 const WebPoint&) { 220 // Immediately stop dragging. 221 web_view_->dragSourceSystemDragEnded(); 222 } 223 224 bool WebViewPlugin::allowsBrokenNullLayerTreeView() const { 225 return true; 226 } 227 228 void WebViewPlugin::didInvalidateRect(const WebRect& rect) { 229 if (container_) 230 container_->invalidateRect(rect); 231 } 232 233 void WebViewPlugin::didChangeCursor(const WebCursorInfo& cursor) { 234 current_cursor_ = cursor; 235 } 236 237 void WebViewPlugin::didClearWindowObject(WebLocalFrame* frame) { 238 if (delegate_) 239 delegate_->BindWebFrame(frame); 240 } 241 242 void WebViewPlugin::didReceiveResponse(WebLocalFrame* frame, 243 unsigned identifier, 244 const WebURLResponse& response) { 245 WebFrameClient::didReceiveResponse(frame, identifier, response); 246 } 247
