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// Copyright (c) 2010 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 "webkit/glue/plugins/webview_plugin.h"
#include "base/message_loop.h"
#include "base/metrics/histogram.h"
#include "third_party/WebKit/WebKit/chromium/public/WebCursorInfo.h"
#include "third_party/WebKit/WebKit/chromium/public/WebElement.h"
#include "third_party/WebKit/WebKit/chromium/public/WebFrame.h"
#include "third_party/WebKit/WebKit/chromium/public/WebPluginContainer.h"
#include "third_party/WebKit/WebKit/chromium/public/WebSize.h"
#include "third_party/WebKit/WebKit/chromium/public/WebURL.h"
#include "third_party/WebKit/WebKit/chromium/public/WebURLRequest.h"
#include "third_party/WebKit/WebKit/chromium/public/WebURLResponse.h"
#include "third_party/WebKit/WebKit/chromium/public/WebView.h"
#include "webkit/glue/webpreferences.h"
#if WEBKIT_USING_CG
#include <CoreGraphics/CGContext.h>
#elif WEBKIT_USING_SKIA
#include "skia/ext/platform_canvas.h"
#endif
using WebKit::WebCanvas;
using WebKit::WebCursorInfo;
using WebKit::WebDragData;
using WebKit::WebDragOperationsMask;
using WebKit::WebFrame;
using WebKit::WebImage;
using WebKit::WebInputEvent;
using WebKit::WebPlugin;
using WebKit::WebPluginContainer;
using WebKit::WebPoint;
using WebKit::WebRect;
using WebKit::WebSize;
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, NULL);
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();
preferences.Apply(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_.get()) {
plugin->didFailLoading(*error_);
}
}
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;
}
if (container_)
container_->element().setAttribute("title", old_title_);
container_ = NULL;
MessageLoop::current()->DeleteSoon(FROM_HERE, this);
}
void WebViewPlugin::paint(WebCanvas* canvas, const WebRect& rect) {
gfx::Rect paintRect(rect_.Intersect(rect));
if (paintRect.IsEmpty())
return;
paintRect.Offset(-rect_.x(), -rect_.y());
#if WEBKIT_USING_CG
CGContextRef context = canvas;
CGContextTranslateCTM(context, rect_.x(), rect_.y());
CGContextSaveGState(context);
#elif WEBKIT_USING_SKIA
skia::PlatformCanvas* platform_canvas = canvas;
platform_canvas->translate(SkIntToScalar(rect_.x()),
SkIntToScalar(rect_.y()));
platform_canvas->save();
#endif
web_view_->layout();
web_view_->paint(canvas, paintRect);
#if WEBKIT_USING_SKIA
platform_canvas->restore();
#elif WEBKIT_USING_CG
CGContextRestoreGState(context);
#endif
}
// 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 (frame_rect != rect_) {
rect_ = frame_rect;
web_view_->resize(WebSize(frame_rect.width, frame_rect.height));
}
}
bool WebViewPlugin::handleInputEvent(const WebInputEvent& event,
WebCursorInfo& cursor) {
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));
}
void WebViewPlugin::setToolTipText(const WebKit::WebString& text,
WebKit::WebTextDirection hint) {
if (container_)
container_->element().setAttribute("title", text);
}
void WebViewPlugin::startDragging(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);
}
bool WebViewPlugin::canHandleRequest(WebFrame* frame,
const WebURLRequest& request) {
return GURL(request.url()).SchemeIs("chrome");
}
WebURLError WebViewPlugin::cancelledError(WebFrame* frame,
const WebURLRequest& request) {
// Return an error with a non-zero reason so isNull() on the corresponding
// ResourceError is false.
WebURLError error;
error.domain = "WebViewPlugin";
error.reason = -1;
error.unreachableURL = request.url();
return error;
}
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