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// Copyright (c) 2012 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.
#ifndef WEBKIT_PLUGINS_WEBVIEW_PLUGIN_H_
#define WEBKIT_PLUGINS_WEBVIEW_PLUGIN_H_
#include <list>
#include "base/memory/scoped_ptr.h"
#include "base/sequenced_task_runner_helpers.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebURLResponse.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebCursorInfo.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrameClient.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebPlugin.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebViewClient.h"
#include "webkit/plugins/webkit_plugins_export.h"
namespace WebKit {
class WebMouseEvent;
}
namespace webkit_glue {
struct WebPreferences;
}
namespace webkit {
// This class implements the WebPlugin interface by forwarding drawing and
// handling input events to a WebView.
// It can be used as a placeholder for an actual plugin, using HTML for the UI.
// To show HTML data inside the WebViewPlugin,
// call web_view->mainFrame()->loadHTMLString() with the HTML data and a fake
// chrome:// URL as origin.
class WebViewPlugin: public WebKit::WebPlugin, public WebKit::WebViewClient,
public WebKit::WebFrameClient {
public:
class Delegate {
public:
// Bind |frame| to a Javascript object, enabling the delegate to receive
// callback methods from Javascript inside the WebFrame.
// This method is called from WebFrameClient::didClearWindowObject.
virtual void BindWebFrame(WebKit::WebFrame* frame) = 0;
// Called before the WebViewPlugin is destroyed. The delegate should delete
// itself here.
virtual void WillDestroyPlugin() = 0;
// Called upon a context menu event.
virtual void ShowContextMenu(const WebKit::WebMouseEvent&) = 0;
};
explicit WebViewPlugin(Delegate* delegate);
// Convenience method to set up a new WebViewPlugin using |preferences|
// and displaying |html_data|. |url| should be a (fake) chrome:// URL; it is
// only used for navigation and never actually resolved.
WEBKIT_PLUGINS_EXPORT static WebViewPlugin* Create(
Delegate* delegate,
const webkit_glue::WebPreferences& preferences,
const std::string& html_data,
const GURL& url);
WebKit::WebView* web_view() { return web_view_; }
// When loading a plug-in document (i.e. a full page plug-in not embedded in
// another page), we save all data that has been received, and replay it with
// this method on the actual plug-in.
WEBKIT_PLUGINS_EXPORT void ReplayReceivedData(WebKit::WebPlugin* plugin);
WEBKIT_PLUGINS_EXPORT void RestoreTitleText();
// WebPlugin methods:
virtual WebKit::WebPluginContainer* container() const;
virtual bool initialize(WebKit::WebPluginContainer*);
virtual void destroy();
virtual NPObject* scriptableObject();
virtual bool getFormValue(WebKit::WebString& value);
virtual void paint(WebKit::WebCanvas* canvas, const WebKit::WebRect& rect);
// Coordinates are relative to the containing window.
virtual void updateGeometry(
const WebKit::WebRect& frame_rect, const WebKit::WebRect& clip_rect,
const WebKit::WebVector<WebKit::WebRect>& cut_out_rects, bool is_visible);
virtual void updateFocus(bool) {}
virtual void updateVisibility(bool) {}
virtual bool acceptsInputEvents();
virtual bool handleInputEvent(const WebKit::WebInputEvent& event,
WebKit::WebCursorInfo& cursor_info);
virtual void didReceiveResponse(const WebKit::WebURLResponse& response);
virtual void didReceiveData(const char* data, int data_length);
virtual void didFinishLoading();
virtual void didFailLoading(const WebKit::WebURLError& error);
// Called in response to WebPluginContainer::loadFrameRequest
virtual void didFinishLoadingFrameRequest(
const WebKit::WebURL& url, void* notifyData) {}
virtual void didFailLoadingFrameRequest(const WebKit::WebURL& url,
void* notify_data,
const WebKit::WebURLError& error) {}
// WebViewClient methods:
virtual bool acceptsLoadDrops();
virtual void setToolTipText(const WebKit::WebString&,
WebKit::WebTextDirection);
virtual void startDragging(WebKit::WebFrame* frame,
const WebKit::WebDragData& drag_data,
WebKit::WebDragOperationsMask mask,
const WebKit::WebImage& image,
const WebKit::WebPoint& point);
// WebWidgetClient methods:
virtual void didInvalidateRect(const WebKit::WebRect&);
virtual void didChangeCursor(const WebKit::WebCursorInfo& cursor);
// WebFrameClient methods:
virtual void didClearWindowObject(WebKit::WebFrame* frame);
virtual bool canHandleRequest(WebKit::WebFrame* frame,
const WebKit::WebURLRequest& request);
virtual WebKit::WebURLError cancelledError(
WebKit::WebFrame* frame, const WebKit::WebURLRequest& request);
// This method is defined in WebPlugin as well as in WebFrameClient, but with
// different parameters. We only care about implementing the WebPlugin
// version, so we implement this method and call the default in WebFrameClient
// (which does nothing) to correctly overload it.
virtual void didReceiveResponse(WebKit::WebFrame* frame,
unsigned identifier,
const WebKit::WebURLResponse& response);
private:
friend class base::DeleteHelper<WebViewPlugin>;
virtual ~WebViewPlugin();
// Get the scale factor for the current page.
float GetPageScaleFactor();
Delegate* delegate_;
// Destroys itself.
WebKit::WebCursorInfo current_cursor_;
// Owns us.
WebKit::WebPluginContainer* container_;
// Owned by us, deleted via |close()|.
WebKit::WebView* web_view_;
gfx::Rect rect_;
WebKit::WebURLResponse response_;
std::list<std::string> data_;
bool finished_loading_;
scoped_ptr<WebKit::WebURLError> error_;
WebKit::WebString old_title_;
};
} // namespace webkit
#endif // WEBKIT_PLUGINS_WEBVIEW_PLUGIN_H_
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