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/safe_numerics.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/WebFrame.h" 19 #include "third_party/WebKit/public/web/WebInputEvent.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::WebFrame; 29 using blink::WebImage; 30 using blink::WebInputEvent; 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 : delegate_(delegate), container_(NULL), finished_loading_(false) { 46 web_view_ = WebView::create(this); 47 web_view_->initializeMainFrame(this); 48 } 49 50 // static 51 WebViewPlugin* WebViewPlugin::Create(WebViewPlugin::Delegate* delegate, 52 const WebPreferences& preferences, 53 const std::string& html_data, 54 const GURL& url) { 55 WebViewPlugin* plugin = new WebViewPlugin(delegate); 56 WebView* web_view = plugin->web_view(); 57 content::ApplyWebPreferences(preferences, web_view); 58 web_view->mainFrame()->loadHTMLString(html_data, url); 59 return plugin; 60 } 61 62 WebViewPlugin::~WebViewPlugin() { web_view_->close(); } 63 64 void WebViewPlugin::ReplayReceivedData(WebPlugin* plugin) { 65 if (!response_.isNull()) { 66 plugin->didReceiveResponse(response_); 67 size_t total_bytes = 0; 68 for (std::list<std::string>::iterator it = data_.begin(); it != data_.end(); 69 ++it) { 70 plugin->didReceiveData( 71 it->c_str(), base::checked_numeric_cast<int, size_t>(it->length())); 72 total_bytes += it->length(); 73 } 74 UMA_HISTOGRAM_MEMORY_KB( 75 "PluginDocument.Memory", 76 (base::checked_numeric_cast<int, size_t>(total_bytes / 1024))); 77 UMA_HISTOGRAM_COUNTS( 78 "PluginDocument.NumChunks", 79 (base::checked_numeric_cast<int, size_t>(data_.size()))); 80 } 81 if (finished_loading_) { 82 plugin->didFinishLoading(); 83 } 84 if (error_) { 85 plugin->didFailLoading(*error_); 86 } 87 } 88 89 void WebViewPlugin::RestoreTitleText() { 90 if (container_) 91 container_->element().setAttribute("title", old_title_); 92 } 93 94 WebPluginContainer* WebViewPlugin::container() const { return container_; } 95 96 bool WebViewPlugin::initialize(WebPluginContainer* container) { 97 container_ = container; 98 if (container_) 99 old_title_ = container_->element().getAttribute("title"); 100 return true; 101 } 102 103 void WebViewPlugin::destroy() { 104 if (delegate_) { 105 delegate_->WillDestroyPlugin(); 106 delegate_ = NULL; 107 } 108 container_ = NULL; 109 base::MessageLoop::current()->DeleteSoon(FROM_HERE, this); 110 } 111 112 NPObject* WebViewPlugin::scriptableObject() { return NULL; } 113 114 struct _NPP* WebViewPlugin::pluginNPP() { return NULL; } 115 116 bool WebViewPlugin::getFormValue(WebString& value) { return false; } 117 118 void WebViewPlugin::paint(WebCanvas* canvas, const WebRect& rect) { 119 gfx::Rect paint_rect = gfx::IntersectRects(rect_, rect); 120 if (paint_rect.IsEmpty()) 121 return; 122 123 paint_rect.Offset(-rect_.x(), -rect_.y()); 124 125 canvas->translate(SkIntToScalar(rect_.x()), SkIntToScalar(rect_.y())); 126 canvas->save(); 127 128 web_view_->layout(); 129 web_view_->paint(canvas, paint_rect); 130 131 canvas->restore(); 132 } 133 134 // Coordinates are relative to the containing window. 135 void WebViewPlugin::updateGeometry(const WebRect& frame_rect, 136 const WebRect& clip_rect, 137 const WebVector<WebRect>& cut_out_rects, 138 bool is_visible) { 139 if (static_cast<gfx::Rect>(frame_rect) != rect_) { 140 rect_ = frame_rect; 141 WebSize newSize(frame_rect.width, frame_rect.height); 142 web_view_->setFixedLayoutSize(newSize); 143 web_view_->resize(newSize); 144 } 145 } 146 147 bool WebViewPlugin::acceptsInputEvents() { return true; } 148 149 bool WebViewPlugin::handleInputEvent(const WebInputEvent& event, 150 WebCursorInfo& cursor) { 151 // For tap events, don't handle them. They will be converted to 152 // mouse events later and passed to here. 153 if (event.type == WebInputEvent::GestureTap) 154 return false; 155 156 if (event.type == WebInputEvent::ContextMenu) { 157 if (delegate_) { 158 const WebMouseEvent& mouse_event = 159 reinterpret_cast<const WebMouseEvent&>(event); 160 delegate_->ShowContextMenu(mouse_event); 161 } 162 return true; 163 } 164 current_cursor_ = cursor; 165 bool handled = web_view_->handleInputEvent(event); 166 cursor = current_cursor_; 167 168 return handled; 169 } 170 171 void WebViewPlugin::didReceiveResponse(const WebURLResponse& response) { 172 DCHECK(response_.isNull()); 173 response_ = response; 174 } 175 176 void WebViewPlugin::didReceiveData(const char* data, int data_length) { 177 data_.push_back(std::string(data, data_length)); 178 } 179 180 void WebViewPlugin::didFinishLoading() { 181 DCHECK(!finished_loading_); 182 finished_loading_ = true; 183 } 184 185 void WebViewPlugin::didFailLoading(const WebURLError& error) { 186 DCHECK(!error_.get()); 187 error_.reset(new WebURLError(error)); 188 } 189 190 bool WebViewPlugin::acceptsLoadDrops() { return false; } 191 192 void WebViewPlugin::setToolTipText(const WebString& text, 193 blink::WebTextDirection hint) { 194 if (container_) 195 container_->element().setAttribute("title", text); 196 } 197 198 void WebViewPlugin::startDragging(WebFrame*, 199 const WebDragData&, 200 WebDragOperationsMask, 201 const WebImage&, 202 const WebPoint&) { 203 // Immediately stop dragging. 204 web_view_->dragSourceSystemDragEnded(); 205 } 206 207 void WebViewPlugin::didInvalidateRect(const WebRect& rect) { 208 if (container_) 209 container_->invalidateRect(rect); 210 } 211 212 void WebViewPlugin::didChangeCursor(const WebCursorInfo& cursor) { 213 current_cursor_ = cursor; 214 } 215 216 void WebViewPlugin::didClearWindowObject(WebFrame* frame) { 217 if (delegate_) 218 delegate_->BindWebFrame(frame); 219 } 220 221 void WebViewPlugin::didReceiveResponse(WebFrame* frame, 222 unsigned identifier, 223 const WebURLResponse& response) { 224 WebFrameClient::didReceiveResponse(frame, identifier, response); 225 } 226
