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// Copyright (c) 2006-2008 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_GLUE_WEBWIDGET_H__
#define WEBKIT_GLUE_WEBWIDGET_H__
#include "skia/ext/platform_canvas.h"
#include "webkit/glue/webtextdirection.h"
namespace WebKit {
class WebInputEvent;
struct WebRect;
struct WebSize;
}
class WebWidgetDelegate;
class WebWidget {
public:
WebWidget() {}
// This method creates a WebWidget that is initially invisible and positioned
// according to the given bounds relative to the specified parent window.
// The caller is responsible for showing the WebWidget's view window (see
// GetViewWindow) once it is ready to have the WebWidget appear on the screen.
static WebWidget* Create(WebWidgetDelegate* delegate);
// This method closes and deletes the WebWidget.
virtual void Close() = 0;
// Called to resize the WebWidget.
virtual void Resize(const WebKit::WebSize& new_size) = 0;
// Returns the current size of the WebWidget.
virtual WebKit::WebSize GetSize() = 0;
// Called to layout the WebWidget. This MUST be called before Paint, and it
// may result in calls to WebWidgetDelegate::DidInvalidateRect.
virtual void Layout() = 0;
// Called to paint the specified region of the WebWidget onto the given canvas.
// You MUST call Layout before calling this method. It is okay to call Paint
// multiple times once Layout has been called, assuming no other changes are
// made to the WebWidget (e.g., once events are processed, it should be assumed
// that another call to Layout is warranted before painting again).
virtual void Paint(skia::PlatformCanvas* canvas,
const WebKit::WebRect& rect) = 0;
// Called to inform the WebWidget of an input event.
// Returns true if the event has been processed, false otherwise.
virtual bool HandleInputEvent(const WebKit::WebInputEvent* input_event) = 0;
// Called to inform the WebWidget that mouse capture was lost.
virtual void MouseCaptureLost() = 0;
// Called to inform the WebWidget that it has gained or lost keyboard focus.
virtual void SetFocus(bool enable) = 0;
// Called to inform the webwidget of a composition event from IMM
// (Input Method Manager).
virtual bool ImeSetComposition(int string_type, int cursor_position,
int target_start, int target_end,
const std::wstring& ime_string) = 0;
// Retrieve the status of this widget required by IME APIs.
virtual bool ImeUpdateStatus(bool* enable_ime,
WebKit::WebRect* caret_rect) = 0;
// Changes the text direction of the selected input node.
virtual void SetTextDirection(WebTextDirection direction) = 0;
protected:
virtual ~WebWidget() {}
private:
DISALLOW_EVIL_CONSTRUCTORS(WebWidget);
};
#endif // #ifndef WEBKIT_GLUE_WEBWIDGET_H__
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