blob: 062e6e102b1bc5586d5a51a2206315700308c6ca [file] [log] [blame]
// Copyright 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 "components/plugins/renderer/webview_plugin.h"
#include "base/message_loop/message_loop.h"
#include "base/metrics/histogram.h"
#include "base/numerics/safe_conversions.h"
#include "content/public/common/web_preferences.h"
#include "content/public/renderer/render_view.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/WebDocument.h"
#include "third_party/WebKit/public/web/WebElement.h"
#include "third_party/WebKit/public/web/WebInputEvent.h"
#include "third_party/WebKit/public/web/WebLocalFrame.h"
#include "third_party/WebKit/public/web/WebPluginContainer.h"
#include "third_party/WebKit/public/web/WebView.h"
using blink::WebCanvas;
using blink::WebCursorInfo;
using blink::WebDragData;
using blink::WebDragOperationsMask;
using blink::WebImage;
using blink::WebInputEvent;
using blink::WebLocalFrame;
using blink::WebMouseEvent;
using blink::WebPlugin;
using blink::WebPluginContainer;
using blink::WebPoint;
using blink::WebRect;
using blink::WebSize;
using blink::WebString;
using blink::WebURLError;
using blink::WebURLRequest;
using blink::WebURLResponse;
using blink::WebVector;
using blink::WebView;
using content::WebPreferences;
WebViewPlugin::WebViewPlugin(WebViewPlugin::Delegate* delegate,
const WebPreferences& preferences)
: delegate_(delegate),
container_(NULL),
web_view_(WebView::create(this)),
finished_loading_(false),
focused_(false) {
// ApplyWebPreferences before making a WebLocalFrame so that the frame sees a
// consistent view of our preferences.
content::RenderView::ApplyWebPreferences(preferences, web_view_);
web_frame_ = WebLocalFrame::create(this);
web_view_->setMainFrame(web_frame_);
}
// static
WebViewPlugin* WebViewPlugin::Create(WebViewPlugin::Delegate* delegate,
const WebPreferences& preferences,
const std::string& html_data,
const GURL& url) {
WebViewPlugin* plugin = new WebViewPlugin(delegate, preferences);
plugin->web_view()->mainFrame()->loadHTMLString(html_data, url);
return plugin;
}
WebViewPlugin::~WebViewPlugin() {
web_view_->close();
web_frame_->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(), base::checked_cast<int, size_t>(it->length()));
total_bytes += it->length();
}
UMA_HISTOGRAM_MEMORY_KB(
"PluginDocument.Memory",
(base::checked_cast<int, size_t>(total_bytes / 1024)));
UMA_HISTOGRAM_COUNTS(
"PluginDocument.NumChunks",
(base::checked_cast<int, size_t>(data_.size())));
}
// We need to transfer the |focused_| to new plugin after it loaded.
if (focused_) {
plugin->updateFocus(true, blink::WebFocusTypeNone);
}
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");
// Propagate device scale to inner webview to load the correct resource
// when images have a "srcset" attribute.
web_view_->setDeviceScaleFactor(container_->deviceScaleFactor());
}
return true;
}
void WebViewPlugin::destroy() {
if (delegate_) {
delegate_->PluginDestroyed();
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->save();
canvas->translate(SkIntToScalar(rect_.x()), SkIntToScalar(rect_.y()));
// Apply inverse device scale factor, as the outer webview has already
// applied it, and the inner webview will apply it again.
SkScalar inverse_scale =
SkFloatToScalar(1.0 / container_->deviceScaleFactor());
canvas->scale(inverse_scale, inverse_scale);
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;
WebSize newSize(frame_rect.width, frame_rect.height);
web_view_->resize(newSize);
}
}
void WebViewPlugin::updateFocus(bool focused, blink::WebFocusType focus_type) {
focused_ = focused;
}
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,
blink::WebTextDirection hint) {
if (container_)
container_->element().setAttribute("title", text);
}
void WebViewPlugin::startDragging(WebLocalFrame*,
const WebDragData&,
WebDragOperationsMask,
const WebImage&,
const WebPoint&) {
// Immediately stop dragging.
web_view_->dragSourceSystemDragEnded();
}
bool WebViewPlugin::allowsBrokenNullLayerTreeView() const {
return true;
}
void WebViewPlugin::didInvalidateRect(const WebRect& rect) {
if (container_)
container_->invalidateRect(rect);
}
void WebViewPlugin::didChangeCursor(const WebCursorInfo& cursor) {
current_cursor_ = cursor;
}
void WebViewPlugin::scheduleAnimation() {
if (container_)
container_->invalidate();
}
void WebViewPlugin::didClearWindowObject(WebLocalFrame* frame) {
if (delegate_)
delegate_->BindWebFrame(frame);
}
void WebViewPlugin::didReceiveResponse(WebLocalFrame* frame,
unsigned identifier,
const WebURLResponse& response) {
WebFrameClient::didReceiveResponse(frame, identifier, response);
}