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// Copyright (c) 2012 Marshall A. Greenblatt. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// ---------------------------------------------------------------------------
//
// The contents of this file must follow a specific format in order to
// support the CEF translator tool. See the translator.README.txt file in the
// tools directory for more information.
//
#ifndef CEF_INCLUDE_CEF_BROWSER_H_
#define CEF_INCLUDE_CEF_BROWSER_H_
#pragma once
#include <vector>
#include "include/cef_base.h"
#include "include/cef_devtools_message_observer.h"
#include "include/cef_drag_data.h"
#include "include/cef_frame.h"
#include "include/cef_image.h"
#include "include/cef_navigation_entry.h"
#include "include/cef_registration.h"
#include "include/cef_request_context.h"
class CefBrowserHost;
class CefClient;
///
/// Class used to represent a browser. When used in the browser process the
/// methods of this class may be called on any thread unless otherwise indicated
/// in the comments. When used in the render process the methods of this class
/// may only be called on the main thread.
///
/*--cef(source=library)--*/
class CefBrowser : public virtual CefBaseRefCounted {
public:
///
/// True if this object is currently valid. This will return false after
/// CefLifeSpanHandler::OnBeforeClose is called.
///
/*--cef()--*/
virtual bool IsValid() = 0;
///
/// Returns the browser host object. This method can only be called in the
/// browser process.
///
/*--cef()--*/
virtual CefRefPtr<CefBrowserHost> GetHost() = 0;
///
/// Returns true if the browser can navigate backwards.
///
/*--cef()--*/
virtual bool CanGoBack() = 0;
///
/// Navigate backwards.
///
/*--cef()--*/
virtual void GoBack() = 0;
///
/// Returns true if the browser can navigate forwards.
///
/*--cef()--*/
virtual bool CanGoForward() = 0;
///
/// Navigate forwards.
///
/*--cef()--*/
virtual void GoForward() = 0;
///
/// Returns true if the browser is currently loading.
///
/*--cef()--*/
virtual bool IsLoading() = 0;
///
/// Reload the current page.
///
/*--cef()--*/
virtual void Reload() = 0;
///
/// Reload the current page ignoring any cached data.
///
/*--cef()--*/
virtual void ReloadIgnoreCache() = 0;
///
/// Stop loading the page.
///
/*--cef()--*/
virtual void StopLoad() = 0;
///
/// Returns the globally unique identifier for this browser. This value is
/// also used as the tabId for extension APIs.
///
/*--cef()--*/
virtual int GetIdentifier() = 0;
///
/// Returns true if this object is pointing to the same handle as |that|
/// object.
///
/*--cef()--*/
virtual bool IsSame(CefRefPtr<CefBrowser> that) = 0;
///
/// Returns true if the browser is a popup.
///
/*--cef()--*/
virtual bool IsPopup() = 0;
///
/// Returns true if a document has been loaded in the browser.
///
/*--cef()--*/
virtual bool HasDocument() = 0;
///
/// Returns the main (top-level) frame for the browser. In the browser process
/// this will return a valid object until after
/// CefLifeSpanHandler::OnBeforeClose is called. In the renderer process this
/// will return NULL if the main frame is hosted in a different renderer
/// process (e.g. for cross-origin sub-frames). The main frame object will
/// change during cross-origin navigation or re-navigation after renderer
/// process termination (due to crashes, etc).
///
/*--cef()--*/
virtual CefRefPtr<CefFrame> GetMainFrame() = 0;
///
/// Returns the focused frame for the browser.
///
/*--cef()--*/
virtual CefRefPtr<CefFrame> GetFocusedFrame() = 0;
///
/// Returns the frame with the specified identifier, or NULL if not found.
///
/*--cef(capi_name=get_frame_byident)--*/
virtual CefRefPtr<CefFrame> GetFrame(int64 identifier) = 0;
///
/// Returns the frame with the specified name, or NULL if not found.
///
/*--cef(optional_param=name)--*/
virtual CefRefPtr<CefFrame> GetFrame(const CefString& name) = 0;
///
/// Returns the number of frames that currently exist.
///
/*--cef()--*/
virtual size_t GetFrameCount() = 0;
///
/// Returns the identifiers of all existing frames.
///
/*--cef(count_func=identifiers:GetFrameCount)--*/
virtual void GetFrameIdentifiers(std::vector<int64>& identifiers) = 0;
///
/// Returns the names of all existing frames.
///
/*--cef()--*/
virtual void GetFrameNames(std::vector<CefString>& names) = 0;
};
///
/// Callback interface for CefBrowserHost::RunFileDialog. The methods of this
/// class will be called on the browser process UI thread.
///
/*--cef(source=client)--*/
class CefRunFileDialogCallback : public virtual CefBaseRefCounted {
public:
///
/// Called asynchronously after the file dialog is dismissed.
/// |file_paths| will be a single value or a list of values depending on the
/// dialog mode. If the selection was cancelled |file_paths| will be empty.
///
/*--cef(optional_param=file_paths)--*/
virtual void OnFileDialogDismissed(
const std::vector<CefString>& file_paths) = 0;
};
///
/// Callback interface for CefBrowserHost::GetNavigationEntries. The methods of
/// this class will be called on the browser process UI thread.
///
/*--cef(source=client)--*/
class CefNavigationEntryVisitor : public virtual CefBaseRefCounted {
public:
///
/// Method that will be executed. Do not keep a reference to |entry| outside
/// of this callback. Return true to continue visiting entries or false to
/// stop. |current| is true if this entry is the currently loaded navigation
/// entry. |index| is the 0-based index of this entry and |total| is the total
/// number of entries.
///
/*--cef()--*/
virtual bool Visit(CefRefPtr<CefNavigationEntry> entry,
bool current,
int index,
int total) = 0;
};
///
/// Callback interface for CefBrowserHost::PrintToPDF. The methods of this class
/// will be called on the browser process UI thread.
///
/*--cef(source=client)--*/
class CefPdfPrintCallback : public virtual CefBaseRefCounted {
public:
///
/// Method that will be executed when the PDF printing has completed. |path|
/// is the output path. |ok| will be true if the printing completed
/// successfully or false otherwise.
///
/*--cef()--*/
virtual void OnPdfPrintFinished(const CefString& path, bool ok) = 0;
};
///
/// Callback interface for CefBrowserHost::DownloadImage. The methods of this
/// class will be called on the browser process UI thread.
///
/*--cef(source=client)--*/
class CefDownloadImageCallback : public virtual CefBaseRefCounted {
public:
///
/// Method that will be executed when the image download has completed.
/// |image_url| is the URL that was downloaded and |http_status_code| is the
/// resulting HTTP status code. |image| is the resulting image, possibly at
/// multiple scale factors, or empty if the download failed.
///
/*--cef(optional_param=image)--*/
virtual void OnDownloadImageFinished(const CefString& image_url,
int http_status_code,
CefRefPtr<CefImage> image) = 0;
};
///
/// Class used to represent the browser process aspects of a browser. The
/// methods of this class can only be called in the browser process. They may be
/// called on any thread in that process unless otherwise indicated in the
/// comments.
///
/*--cef(source=library)--*/
class CefBrowserHost : public virtual CefBaseRefCounted {
public:
typedef cef_drag_operations_mask_t DragOperationsMask;
typedef cef_file_dialog_mode_t FileDialogMode;
typedef cef_mouse_button_type_t MouseButtonType;
typedef cef_paint_element_type_t PaintElementType;
///
/// Create a new browser using the window parameters specified by
/// |windowInfo|. All values will be copied internally and the actual window
/// (if any) will be created on the UI thread. If |request_context| is empty
/// the global request context will be used. This method can be called on any
/// browser process thread and will not block. The optional |extra_info|
/// parameter provides an opportunity to specify extra information specific to
/// the created browser that will be passed to
/// CefRenderProcessHandler::OnBrowserCreated() in the render process.
///
/*--cef(optional_param=client,optional_param=url,
optional_param=request_context,optional_param=extra_info)--*/
static bool CreateBrowser(const CefWindowInfo& windowInfo,
CefRefPtr<CefClient> client,
const CefString& url,
const CefBrowserSettings& settings,
CefRefPtr<CefDictionaryValue> extra_info,
CefRefPtr<CefRequestContext> request_context);
///
/// Create a new browser using the window parameters specified by
/// |windowInfo|. If |request_context| is empty the global request context
/// will be used. This method can only be called on the browser process UI
/// thread. The optional |extra_info| parameter provides an opportunity to
/// specify extra information specific to the created browser that will be
/// passed to CefRenderProcessHandler::OnBrowserCreated() in the render
/// process.
///
/*--cef(optional_param=client,optional_param=url,
optional_param=request_context,optional_param=extra_info)--*/
static CefRefPtr<CefBrowser> CreateBrowserSync(
const CefWindowInfo& windowInfo,
CefRefPtr<CefClient> client,
const CefString& url,
const CefBrowserSettings& settings,
CefRefPtr<CefDictionaryValue> extra_info,
CefRefPtr<CefRequestContext> request_context);
///
/// Returns the hosted browser object.
///
/*--cef()--*/
virtual CefRefPtr<CefBrowser> GetBrowser() = 0;
///
/// Request that the browser close. The JavaScript 'onbeforeunload' event will
/// be fired. If |force_close| is false the event handler, if any, will be
/// allowed to prompt the user and the user can optionally cancel the close.
/// If |force_close| is true the prompt will not be displayed and the close
/// will proceed. Results in a call to CefLifeSpanHandler::DoClose() if the
/// event handler allows the close or if |force_close| is true. See
/// CefLifeSpanHandler::DoClose() documentation for additional usage
/// information.
///
/*--cef()--*/
virtual void CloseBrowser(bool force_close) = 0;
///
/// Helper for closing a browser. Call this method from the top-level window
/// close handler (if any). Internally this calls CloseBrowser(false) if the
/// close has not yet been initiated. This method returns false while the
/// close is pending and true after the close has completed. See
/// CloseBrowser() and CefLifeSpanHandler::DoClose() documentation for
/// additional usage information. This method must be called on the browser
/// process UI thread.
///
/*--cef()--*/
virtual bool TryCloseBrowser() = 0;
///
/// Set whether the browser is focused.
///
/*--cef()--*/
virtual void SetFocus(bool focus) = 0;
///
/// Retrieve the window handle (if any) for this browser. If this browser is
/// wrapped in a CefBrowserView this method should be called on the browser
/// process UI thread and it will return the handle for the top-level native
/// window.
///
/*--cef()--*/
virtual CefWindowHandle GetWindowHandle() = 0;
///
/// Retrieve the window handle (if any) of the browser that opened this
/// browser. Will return NULL for non-popup browsers or if this browser is
/// wrapped in a CefBrowserView. This method can be used in combination with
/// custom handling of modal windows.
///
/*--cef()--*/
virtual CefWindowHandle GetOpenerWindowHandle() = 0;
///
/// Returns true if this browser is wrapped in a CefBrowserView.
///
/*--cef()--*/
virtual bool HasView() = 0;
///
/// Returns the client for this browser.
///
/*--cef()--*/
virtual CefRefPtr<CefClient> GetClient() = 0;
///
/// Returns the request context for this browser.
///
/*--cef()--*/
virtual CefRefPtr<CefRequestContext> GetRequestContext() = 0;
///
/// Get the current zoom level. The default zoom level is 0.0. This method can
/// only be called on the UI thread.
///
/*--cef()--*/
virtual double GetZoomLevel() = 0;
///
/// Change the zoom level to the specified value. Specify 0.0 to reset the
/// zoom level. If called on the UI thread the change will be applied
/// immediately. Otherwise, the change will be applied asynchronously on the
/// UI thread.
///
/*--cef()--*/
virtual void SetZoomLevel(double zoomLevel) = 0;
///
/// Call to run a file chooser dialog. Only a single file chooser dialog may
/// be pending at any given time. |mode| represents the type of dialog to
/// display. |title| to the title to be used for the dialog and may be empty
/// to show the default title ("Open" or "Save" depending on the mode).
/// |default_file_path| is the path with optional directory and/or file name
/// component that will be initially selected in the dialog. |accept_filters|
/// are used to restrict the selectable file types and may any combination of
/// (a) valid lower-cased MIME types (e.g. "text/*" or "image/*"), (b)
/// individual file extensions (e.g.
/// ".txt" or ".png"), or (c) combined description and file extension
/// delimited using "|" and ";" (e.g. "Image Types|.png;.gif;.jpg").
/// |callback| will be executed after the dialog is dismissed or immediately
/// if another dialog is already pending. The dialog will be initiated
/// asynchronously on the UI thread.
///
/*--cef(optional_param=title,optional_param=default_file_path,
optional_param=accept_filters)--*/
virtual void RunFileDialog(FileDialogMode mode,
const CefString& title,
const CefString& default_file_path,
const std::vector<CefString>& accept_filters,
CefRefPtr<CefRunFileDialogCallback> callback) = 0;
///
/// Download the file at |url| using CefDownloadHandler.
///
/*--cef()--*/
virtual void StartDownload(const CefString& url) = 0;
///
/// Download |image_url| and execute |callback| on completion with the images
/// received from the renderer. If |is_favicon| is true then cookies are not
/// sent and not accepted during download. Images with density independent
/// pixel (DIP) sizes larger than |max_image_size| are filtered out from the
/// image results. Versions of the image at different scale factors may be
/// downloaded up to the maximum scale factor supported by the system. If
/// there are no image results <= |max_image_size| then the smallest image is
/// resized to |max_image_size| and is the only result. A |max_image_size| of
/// 0 means unlimited. If |bypass_cache| is true then |image_url| is requested
/// from the server even if it is present in the browser cache.
///
/*--cef()--*/
virtual void DownloadImage(const CefString& image_url,
bool is_favicon,
uint32 max_image_size,
bool bypass_cache,
CefRefPtr<CefDownloadImageCallback> callback) = 0;
///
/// Print the current browser contents.
///
/*--cef()--*/
virtual void Print() = 0;
///
/// Print the current browser contents to the PDF file specified by |path| and
/// execute |callback| on completion. The caller is responsible for deleting
/// |path| when done. For PDF printing to work on Linux you must implement the
/// CefPrintHandler::GetPdfPaperSize method.
///
/*--cef(optional_param=callback)--*/
virtual void PrintToPDF(const CefString& path,
const CefPdfPrintSettings& settings,
CefRefPtr<CefPdfPrintCallback> callback) = 0;
///
/// Search for |searchText|. |forward| indicates whether to search forward or
/// backward within the page. |matchCase| indicates whether the search should
/// be case-sensitive. |findNext| indicates whether this is the first request
/// or a follow-up. The search will be restarted if |searchText| or
/// |matchCase| change. The search will be stopped if |searchText| is empty.
/// The CefFindHandler instance, if any, returned via
/// CefClient::GetFindHandler will be called to report find results.
///
/*--cef()--*/
virtual void Find(const CefString& searchText,
bool forward,
bool matchCase,
bool findNext) = 0;
///
/// Cancel all searches that are currently going on.
///
/*--cef()--*/
virtual void StopFinding(bool clearSelection) = 0;
///
/// Open developer tools (DevTools) in its own browser. The DevTools browser
/// will remain associated with this browser. If the DevTools browser is
/// already open then it will be focused, in which case the |windowInfo|,
/// |client| and |settings| parameters will be ignored. If
/// |inspect_element_at| is non-empty then the element at the specified (x,y)
/// location will be inspected. The |windowInfo| parameter will be ignored if
/// this browser is wrapped in a CefBrowserView.
///
/*--cef(optional_param=windowInfo,optional_param=client,
optional_param=settings,optional_param=inspect_element_at)--*/
virtual void ShowDevTools(const CefWindowInfo& windowInfo,
CefRefPtr<CefClient> client,
const CefBrowserSettings& settings,
const CefPoint& inspect_element_at) = 0;
///
/// Explicitly close the associated DevTools browser, if any.
///
/*--cef()--*/
virtual void CloseDevTools() = 0;
///
/// Returns true if this browser currently has an associated DevTools browser.
/// Must be called on the browser process UI thread.
///
/*--cef()--*/
virtual bool HasDevTools() = 0;
///
/// Send a method call message over the DevTools protocol. |message| must be a
/// UTF8-encoded JSON dictionary that contains "id" (int), "method" (string)
/// and "params" (dictionary, optional) values. See the DevTools protocol
/// documentation at https://chromedevtools.github.io/devtools-protocol/ for
/// details of supported methods and the expected "params" dictionary
/// contents. |message| will be copied if necessary. This method will return
/// true if called on the UI thread and the message was successfully submitted
/// for validation, otherwise false. Validation will be applied asynchronously
/// and any messages that fail due to formatting errors or missing parameters
/// may be discarded without notification. Prefer ExecuteDevToolsMethod if a
/// more structured approach to message formatting is desired.
///
/// Every valid method call will result in an asynchronous method result or
/// error message that references the sent message "id". Event messages are
/// received while notifications are enabled (for example, between method
/// calls for "Page.enable" and "Page.disable"). All received messages will be
/// delivered to the observer(s) registered with AddDevToolsMessageObserver.
/// See CefDevToolsMessageObserver::OnDevToolsMessage documentation for
/// details of received message contents.
///
/// Usage of the SendDevToolsMessage, ExecuteDevToolsMethod and
/// AddDevToolsMessageObserver methods does not require an active DevTools
/// front-end or remote-debugging session. Other active DevTools sessions will
/// continue to function independently. However, any modification of global
/// browser state by one session may not be reflected in the UI of other
/// sessions.
///
/// Communication with the DevTools front-end (when displayed) can be logged
/// for development purposes by passing the
/// `--devtools-protocol-log-file=<path>` command-line flag.
///
/*--cef()--*/
virtual bool SendDevToolsMessage(const void* message,
size_t message_size) = 0;
///
/// Execute a method call over the DevTools protocol. This is a more
/// structured version of SendDevToolsMessage. |message_id| is an incremental
/// number that uniquely identifies the message (pass 0 to have the next
/// number assigned automatically based on previous values). |method| is the
/// method name. |params| are the method parameters, which may be empty. See
/// the DevTools protocol documentation (linked above) for details of
/// supported methods and the expected |params| dictionary contents. This
/// method will return the assigned message ID if called on the UI thread and
/// the message was successfully submitted for validation, otherwise 0. See
/// the SendDevToolsMessage documentation for additional usage information.
///
/*--cef(optional_param=params)--*/
virtual int ExecuteDevToolsMethod(int message_id,
const CefString& method,
CefRefPtr<CefDictionaryValue> params) = 0;
///
/// Add an observer for DevTools protocol messages (method results and
/// events). The observer will remain registered until the returned
/// Registration object is destroyed. See the SendDevToolsMessage
/// documentation for additional usage information.
///
/*--cef()--*/
virtual CefRefPtr<CefRegistration> AddDevToolsMessageObserver(
CefRefPtr<CefDevToolsMessageObserver> observer) = 0;
///
/// Retrieve a snapshot of current navigation entries as values sent to the
/// specified visitor. If |current_only| is true only the current navigation
/// entry will be sent, otherwise all navigation entries will be sent.
///
/*--cef()--*/
virtual void GetNavigationEntries(
CefRefPtr<CefNavigationEntryVisitor> visitor,
bool current_only) = 0;
///
/// If a misspelled word is currently selected in an editable node calling
/// this method will replace it with the specified |word|.
///
/*--cef()--*/
virtual void ReplaceMisspelling(const CefString& word) = 0;
///
/// Add the specified |word| to the spelling dictionary.
///
/*--cef()--*/
virtual void AddWordToDictionary(const CefString& word) = 0;
///
/// Returns true if window rendering is disabled.
///
/*--cef()--*/
virtual bool IsWindowRenderingDisabled() = 0;
///
/// Notify the browser that the widget has been resized. The browser will
/// first call CefRenderHandler::GetViewRect to get the new size and then call
/// CefRenderHandler::OnPaint asynchronously with the updated regions. This
/// method is only used when window rendering is disabled.
///
/*--cef()--*/
virtual void WasResized() = 0;
///
/// Notify the browser that it has been hidden or shown. Layouting and
/// CefRenderHandler::OnPaint notification will stop when the browser is
/// hidden. This method is only used when window rendering is disabled.
///
/*--cef()--*/
virtual void WasHidden(bool hidden) = 0;
///
/// Send a notification to the browser that the screen info has changed. The
/// browser will then call CefRenderHandler::GetScreenInfo to update the
/// screen information with the new values. This simulates moving the webview
/// window from one display to another, or changing the properties of the
/// current display. This method is only used when window rendering is
/// disabled.
///
/*--cef()--*/
virtual void NotifyScreenInfoChanged() = 0;
///
/// Invalidate the view. The browser will call CefRenderHandler::OnPaint
/// asynchronously. This method is only used when window rendering is
/// disabled.
///
/*--cef()--*/
virtual void Invalidate(PaintElementType type) = 0;
///
/// Issue a BeginFrame request to Chromium. Only valid when
/// CefWindowInfo::external_begin_frame_enabled is set to true.
///
/*--cef()--*/
virtual void SendExternalBeginFrame() = 0;
///
/// Send a key event to the browser.
///
/*--cef()--*/
virtual void SendKeyEvent(const CefKeyEvent& event) = 0;
///
/// Send a mouse click event to the browser. The |x| and |y| coordinates are
/// relative to the upper-left corner of the view.
///
/*--cef()--*/
virtual void SendMouseClickEvent(const CefMouseEvent& event,
MouseButtonType type,
bool mouseUp,
int clickCount) = 0;
///
/// Send a mouse move event to the browser. The |x| and |y| coordinates are
/// relative to the upper-left corner of the view.
///
/*--cef()--*/
virtual void SendMouseMoveEvent(const CefMouseEvent& event,
bool mouseLeave) = 0;
///
/// Send a mouse wheel event to the browser. The |x| and |y| coordinates are
/// relative to the upper-left corner of the view. The |deltaX| and |deltaY|
/// values represent the movement delta in the X and Y directions
/// respectively. In order to scroll inside select popups with window
/// rendering disabled CefRenderHandler::GetScreenPoint should be implemented
/// properly.
///
/*--cef()--*/
virtual void SendMouseWheelEvent(const CefMouseEvent& event,
int deltaX,
int deltaY) = 0;
///
/// Send a touch event to the browser for a windowless browser.
///
/*--cef()--*/
virtual void SendTouchEvent(const CefTouchEvent& event) = 0;
///
/// Send a capture lost event to the browser.
///
/*--cef()--*/
virtual void SendCaptureLostEvent() = 0;
///
/// Notify the browser that the window hosting it is about to be moved or
/// resized. This method is only used on Windows and Linux.
///
/*--cef()--*/
virtual void NotifyMoveOrResizeStarted() = 0;
///
/// Returns the maximum rate in frames per second (fps) that
/// CefRenderHandler::OnPaint will be called for a windowless browser. The
/// actual fps may be lower if the browser cannot generate frames at the
/// requested rate. The minimum value is 1 and the maximum value is 60
/// (default 30). This method can only be called on the UI thread.
///
/*--cef()--*/
virtual int GetWindowlessFrameRate() = 0;
///
/// Set the maximum rate in frames per second (fps) that CefRenderHandler::
/// OnPaint will be called for a windowless browser. The actual fps may be
/// lower if the browser cannot generate frames at the requested rate. The
/// minimum value is 1 and the maximum value is 60 (default 30). Can also be
/// set at browser creation via CefBrowserSettings.windowless_frame_rate.
///
/*--cef()--*/
virtual void SetWindowlessFrameRate(int frame_rate) = 0;
///
/// Begins a new composition or updates the existing composition. Blink has a
/// special node (a composition node) that allows the input method to change
/// text without affecting other DOM nodes. |text| is the optional text that
/// will be inserted into the composition node. |underlines| is an optional
/// set of ranges that will be underlined in the resulting text.
/// |replacement_range| is an optional range of the existing text that will be
/// replaced. |selection_range| is an optional range of the resulting text
/// that will be selected after insertion or replacement. The
/// |replacement_range| value is only used on OS X.
///
/// This method may be called multiple times as the composition changes. When
/// the client is done making changes the composition should either be
/// canceled or completed. To cancel the composition call
/// ImeCancelComposition. To complete the composition call either
/// ImeCommitText or ImeFinishComposingText. Completion is usually signaled
/// when:
///
/// 1. The client receives a WM_IME_COMPOSITION message with a GCS_RESULTSTR
/// flag (on Windows), or;
/// 2. The client receives a "commit" signal of GtkIMContext (on Linux), or;
/// 3. insertText of NSTextInput is called (on Mac).
///
/// This method is only used when window rendering is disabled.
///
/*--cef(optional_param=text, optional_param=underlines)--*/
virtual void ImeSetComposition(
const CefString& text,
const std::vector<CefCompositionUnderline>& underlines,
const CefRange& replacement_range,
const CefRange& selection_range) = 0;
///
/// Completes the existing composition by optionally inserting the specified
/// |text| into the composition node. |replacement_range| is an optional range
/// of the existing text that will be replaced. |relative_cursor_pos| is where
/// the cursor will be positioned relative to the current cursor position. See
/// comments on ImeSetComposition for usage. The |replacement_range| and
/// |relative_cursor_pos| values are only used on OS X.
/// This method is only used when window rendering is disabled.
///
/*--cef(optional_param=text)--*/
virtual void ImeCommitText(const CefString& text,
const CefRange& replacement_range,
int relative_cursor_pos) = 0;
///
/// Completes the existing composition by applying the current composition
/// node contents. If |keep_selection| is false the current selection, if any,
/// will be discarded. See comments on ImeSetComposition for usage. This
/// method is only used when window rendering is disabled.
///
/*--cef()--*/
virtual void ImeFinishComposingText(bool keep_selection) = 0;
///
/// Cancels the existing composition and discards the composition node
/// contents without applying them. See comments on ImeSetComposition for
/// usage.
/// This method is only used when window rendering is disabled.
///
/*--cef()--*/
virtual void ImeCancelComposition() = 0;
///
/// Call this method when the user drags the mouse into the web view (before
/// calling DragTargetDragOver/DragTargetLeave/DragTargetDrop).
/// |drag_data| should not contain file contents as this type of data is not
/// allowed to be dragged into the web view. File contents can be removed
/// using CefDragData::ResetFileContents (for example, if |drag_data| comes
/// from CefRenderHandler::StartDragging). This method is only used when
/// window rendering is disabled.
///
/*--cef()--*/
virtual void DragTargetDragEnter(CefRefPtr<CefDragData> drag_data,
const CefMouseEvent& event,
DragOperationsMask allowed_ops) = 0;
///
/// Call this method each time the mouse is moved across the web view during
/// a drag operation (after calling DragTargetDragEnter and before calling
/// DragTargetDragLeave/DragTargetDrop).
/// This method is only used when window rendering is disabled.
///
/*--cef()--*/
virtual void DragTargetDragOver(const CefMouseEvent& event,
DragOperationsMask allowed_ops) = 0;
///
/// Call this method when the user drags the mouse out of the web view (after
/// calling DragTargetDragEnter).
/// This method is only used when window rendering is disabled.
///
/*--cef()--*/
virtual void DragTargetDragLeave() = 0;
///
/// Call this method when the user completes the drag operation by dropping
/// the object onto the web view (after calling DragTargetDragEnter).
/// The object being dropped is |drag_data|, given as an argument to
/// the previous DragTargetDragEnter call.
/// This method is only used when window rendering is disabled.
///
/*--cef()--*/
virtual void DragTargetDrop(const CefMouseEvent& event) = 0;
///
/// Call this method when the drag operation started by a
/// CefRenderHandler::StartDragging call has ended either in a drop or
/// by being cancelled. |x| and |y| are mouse coordinates relative to the
/// upper-left corner of the view. If the web view is both the drag source
/// and the drag target then all DragTarget* methods should be called before
/// DragSource* mthods.
/// This method is only used when window rendering is disabled.
///
/*--cef()--*/
virtual void DragSourceEndedAt(int x, int y, DragOperationsMask op) = 0;
///
/// Call this method when the drag operation started by a
/// CefRenderHandler::StartDragging call has completed. This method may be
/// called immediately without first calling DragSourceEndedAt to cancel a
/// drag operation. If the web view is both the drag source and the drag
/// target then all DragTarget* methods should be called before DragSource*
/// mthods.
/// This method is only used when window rendering is disabled.
///
/*--cef()--*/
virtual void DragSourceSystemDragEnded() = 0;
///
/// Returns the current visible navigation entry for this browser. This method
/// can only be called on the UI thread.
///
/*--cef()--*/
virtual CefRefPtr<CefNavigationEntry> GetVisibleNavigationEntry() = 0;
///
/// Set accessibility state for all frames. |accessibility_state| may be
/// default, enabled or disabled. If |accessibility_state| is STATE_DEFAULT
/// then accessibility will be disabled by default and the state may be
/// further controlled with the "force-renderer-accessibility" and
/// "disable-renderer-accessibility" command-line switches. If
/// |accessibility_state| is STATE_ENABLED then accessibility will be enabled.
/// If |accessibility_state| is STATE_DISABLED then accessibility will be
/// completely disabled.
///
/// For windowed browsers accessibility will be enabled in Complete mode
/// (which corresponds to kAccessibilityModeComplete in Chromium). In this
/// mode all platform accessibility objects will be created and managed by
/// Chromium's internal implementation. The client needs only to detect the
/// screen reader and call this method appropriately. For example, on macOS
/// the client can handle the @"AXEnhancedUserInterface" accessibility
/// attribute to detect VoiceOver state changes and on Windows the client can
/// handle WM_GETOBJECT with OBJID_CLIENT to detect accessibility readers.
///
/// For windowless browsers accessibility will be enabled in TreeOnly mode
/// (which corresponds to kAccessibilityModeWebContentsOnly in Chromium). In
/// this mode renderer accessibility is enabled, the full tree is computed,
/// and events are passed to CefAccessibiltyHandler, but platform
/// accessibility objects are not created. The client may implement platform
/// accessibility objects using CefAccessibiltyHandler callbacks if desired.
///
/*--cef()--*/
virtual void SetAccessibilityState(cef_state_t accessibility_state) = 0;
///
/// Enable notifications of auto resize via CefDisplayHandler::OnAutoResize.
/// Notifications are disabled by default. |min_size| and |max_size| define
/// the range of allowed sizes.
///
/*--cef()--*/
virtual void SetAutoResizeEnabled(bool enabled,
const CefSize& min_size,
const CefSize& max_size) = 0;
///
/// Returns the extension hosted in this browser or NULL if no extension is
/// hosted. See CefRequestContext::LoadExtension for details.
///
/*--cef()--*/
virtual CefRefPtr<CefExtension> GetExtension() = 0;
///
/// Returns true if this browser is hosting an extension background script.
/// Background hosts do not have a window and are not displayable. See
/// CefRequestContext::LoadExtension for details.
///
/*--cef()--*/
virtual bool IsBackgroundHost() = 0;
///
/// Set whether the browser's audio is muted.
///
/*--cef()--*/
virtual void SetAudioMuted(bool mute) = 0;
///
/// Returns true if the browser's audio is muted. This method can only be
/// called on the UI thread.
///
/*--cef()--*/
virtual bool IsAudioMuted() = 0;
};
#endif // CEF_INCLUDE_CEF_BROWSER_H_
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