cef/libcef/browser/views/browser_view_view.h

71 lines
2.4 KiB
C++

// Copyright 2016 The Chromium Embedded Framework 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 CEF_LIBCEF_BROWSER_VIEWS_BROWSER_VIEW_VIEW_H_
#define CEF_LIBCEF_BROWSER_VIEWS_BROWSER_VIEW_VIEW_H_
#pragma once
#include "base/memory/raw_ptr.h"
#include "cef/include/views/cef_browser_view_delegate.h"
#include "cef/libcef/browser/views/view_view.h"
#include "ui/views/controls/webview/webview.h"
// Extend views::WebView with a no-argument constructor as required by the
// CefViewView template.
class WebViewEx : public views::WebView {
public:
WebViewEx() : views::WebView(nullptr) {
// Mouse events on draggable regions will not be handled by the WebView.
// Avoid the resulting DCHECK in NativeViewHost::OnMousePressed by
// configuring the NativeViewHost not to process events via the view
// hierarchy.
holder()->SetCanProcessEventsWithinSubtree(false);
}
};
class CefBrowserViewView
: public CefViewView<WebViewEx, CefBrowserViewDelegate> {
public:
using ParentClass = CefViewView<WebViewEx, CefBrowserViewDelegate>;
CefBrowserViewView(const CefBrowserViewView&) = delete;
CefBrowserViewView& operator=(const CefBrowserViewView&) = delete;
class Delegate {
public:
// Called when the BrowserView is added or removed from a Widget.
virtual void AddedToWidget() = 0;
virtual void RemovedFromWidget() = 0;
// Called when the BrowserView bounds have changed.
virtual void OnBoundsChanged() = 0;
// Called when the BrowserView receives a gesture event.
// Returns true if the gesture was handled.
virtual bool OnGestureEvent(ui::GestureEvent* event) = 0;
protected:
virtual ~Delegate() = default;
};
// |cef_delegate| may be nullptr.
// |browser_view_delegate| must be non-nullptr.
CefBrowserViewView(CefBrowserViewDelegate* cef_delegate,
Delegate* browser_view_delegate);
// View methods:
void ViewHierarchyChanged(
const views::ViewHierarchyChangedDetails& details) override;
void OnBoundsChanged(const gfx::Rect& previous_bounds) override;
void OnGestureEvent(ui::GestureEvent* event) override;
void AddedToWidget() override;
void RemovedFromWidget() override;
private:
// Not owned by this object.
raw_ptr<Delegate> browser_view_delegate_;
};
#endif // CEF_LIBCEF_BROWSER_VIEWS_BROWSER_VIEW_VIEW_H_