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The Browser object represents the top-level Chrome browser window. One or more tabs (WebContents) are then owned by the Browser object via TabStripModel. A new Browser object can be created programmatically using "new Browser" or Browser::Create, or as a result of user action such as dragging a tab out of an existing window. New or existing tabs can also be added to an already existing Browser object. The Browser object acts as the WebContentsDelegate for all attached tabs. CEF integration requires WebContentsDelegate callbacks and notification of tab attach/detach. To support this integration we add a cef::BrowserDelegate (ChromeBrowserDelegate) member that is created in the Browser constructor and receives delegation for the Browser callbacks. ChromeBrowserDelegate creates a new ChromeBrowserHostImpl when a tab is added to a Browser for the first time, and that ChromeBrowserHostImpl continues to exist until the tab's WebContents is destroyed. The associated WebContents object does not change, but the Browser object will change when the tab is dragged between windows. CEF callback logic is shared between the chrome and alloy runtimes where possible. This shared logic has been extracted from CefBrowserHostImpl to create new CefBrowserHostBase and CefBrowserContentsDelegate classes. The CefBrowserHostImpl class is now only used with the alloy runtime and will be renamed to AlloyBrowserHostImpl in a future commit.
113 lines
4.1 KiB
C++
113 lines
4.1 KiB
C++
// Copyright 2016 The Chromium Embedded Framework Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be found
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// in the LICENSE file.
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#ifndef CEF_LIBCEF_BROWSER_VIEWS_BROWSER_VIEW_IMPL_H_
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#define CEF_LIBCEF_BROWSER_VIEWS_BROWSER_VIEW_IMPL_H_
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#pragma once
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#include "include/cef_client.h"
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#include "include/views/cef_browser_view.h"
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#include "include/views/cef_browser_view_delegate.h"
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#include "libcef/browser/browser_host_impl.h"
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#include "libcef/browser/views/browser_view_view.h"
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#include "libcef/browser/views/view_impl.h"
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#include "base/callback_forward.h"
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#include "ui/views/controls/webview/unhandled_keyboard_event_handler.h"
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class CefBrowserViewImpl : public CefViewImpl<CefBrowserViewView,
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CefBrowserView,
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CefBrowserViewDelegate>,
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public CefBrowserViewView::Delegate {
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public:
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typedef CefViewImpl<CefBrowserViewView,
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CefBrowserView,
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CefBrowserViewDelegate>
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ParentClass;
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// Create a new CefBrowserView instance. |delegate| may be nullptr.
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static CefRefPtr<CefBrowserViewImpl> Create(
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CefRefPtr<CefClient> client,
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const CefString& url,
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const CefBrowserSettings& settings,
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CefRefPtr<CefDictionaryValue> extra_info,
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CefRefPtr<CefRequestContext> request_context,
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CefRefPtr<CefBrowserViewDelegate> delegate);
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// Create a new CefBrowserView instance for a popup. |delegate| may be
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// nullptr.
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static CefRefPtr<CefBrowserViewImpl> CreateForPopup(
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const CefBrowserSettings& settings,
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CefRefPtr<CefBrowserViewDelegate> delegate);
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// Called from CefBrowserPlatformDelegateViews.
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void WebContentsCreated(content::WebContents* web_contents);
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void BrowserCreated(CefBrowserHostImpl* browser,
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base::RepeatingClosure on_bounds_changed);
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void BrowserDestroyed(CefBrowserHostImpl* browser);
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// Called to handle accelerators when the event is unhandled by the web
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// content and the browser client.
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bool HandleKeyboardEvent(const content::NativeWebKeyboardEvent& event);
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// CefBrowserView methods:
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CefRefPtr<CefBrowser> GetBrowser() override;
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void SetPreferAccelerators(bool prefer_accelerators) override;
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// CefView methods:
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CefRefPtr<CefBrowserView> AsBrowserView() override { return this; }
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void SetBackgroundColor(cef_color_t color) override;
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// CefViewAdapter methods:
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void Detach() override;
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std::string GetDebugType() override { return "BrowserView"; }
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void GetDebugInfo(base::DictionaryValue* info,
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bool include_children) override;
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// CefBrowserViewView::Delegate methods:
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void OnBrowserViewAdded() override;
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void OnBoundsChanged() override;
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private:
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// Create a new implementation object.
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// Always call Initialize() after creation.
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// |delegate| may be nullptr.
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explicit CefBrowserViewImpl(CefRefPtr<CefBrowserViewDelegate> delegate);
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void SetPendingBrowserCreateParams(
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CefRefPtr<CefClient> client,
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const CefString& url,
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const CefBrowserSettings& settings,
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CefRefPtr<CefDictionaryValue> extra_info,
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CefRefPtr<CefRequestContext> request_context);
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void SetDefaults(const CefBrowserSettings& settings);
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// CefViewImpl methods:
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CefBrowserViewView* CreateRootView() override;
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void InitializeRootView() override;
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// Logic extracted from UnhandledKeyboardEventHandler::HandleKeyboardEvent for
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// the handling of accelerators. Returns true if the event was handled by the
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// accelerator.
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bool HandleAccelerator(const content::NativeWebKeyboardEvent& event,
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views::FocusManager* focus_manager);
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std::unique_ptr<CefBrowserHostBase::CreateParams>
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pending_browser_create_params_;
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CefRefPtr<CefBrowserHostImpl> browser_;
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views::UnhandledKeyboardEventHandler unhandled_keyboard_event_handler_;
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bool ignore_next_char_event_ = false;
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base::RepeatingClosure on_bounds_changed_;
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IMPLEMENT_REFCOUNTING_DELETE_ON_UIT(CefBrowserViewImpl);
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DISALLOW_COPY_AND_ASSIGN(CefBrowserViewImpl);
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};
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#endif // CEF_LIBCEF_BROWSER_VIEWS_BROWSER_VIEW_IMPL_H_
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