org.cef.handler

接口 CefAppHandler

所有已知实现类:

CefApp, CefAppHandlerAdapter

public interface CefAppHandler

Implement this interface to provide handler implementations. Methods will be called by the process and/or thread indicated.

方法概要

方法

限定符和类型	方法和说明
CefPrintHandler	getPrintHandler() Return the handler for printing on Linux.
void	onBeforeCommandLineProcessing(String process_type, CefCommandLine command_line) Provides an opportunity to view and/or modify command-line arguments before processing by CEF and Chromium.
boolean	onBeforeTerminate() Provides an opportunity to hook into the native shutdown process.
void	onContextInitialized() Called on the browser process UI thread immediately after the CEF context has been initialized.
void	onRegisterCustomSchemes(CefSchemeRegistrar registrar) Provides an opportunity to register custom schemes.
void	stateHasChanged(CefApp.CefAppState state) Implement this method to get state changes of the CefApp.

方法详细资料

onBeforeCommandLineProcessing

void onBeforeCommandLineProcessing(String process_type,
                                 CefCommandLine command_line)

Provides an opportunity to view and/or modify command-line arguments before processing by CEF and Chromium. The |process_type| value will be empty for the browser process. Be cautious when using this method to modify command-line arguments for non-browser processes as this may result in undefined behavior including crashes.

参数:

process_type - type of process (empty for browser process).

command_line - values of the command line.

onBeforeTerminate

boolean onBeforeTerminate()

Provides an opportunity to hook into the native shutdown process. This method is invoked if the user tries to terminate the app by sending the corresponding key code (e.g. on Mac: CMD+Q) or something similar. If you want to proceed with the default behavior of the native system, return false. If you want to abort the terminate or if you want to implement your own shutdown sequence return true and do the cleanup on your own.

返回:

false to proceed with the default behavior, true to abort terminate

stateHasChanged

void stateHasChanged(CefApp.CefAppState state)

Implement this method to get state changes of the CefApp. See CefApp.CefAppState for a complete list of possible states. For example, this method can be used e.g. to get informed if CefApp has completed its initialization or its shutdown process.

参数:

state - The current state of CefApp.

onRegisterCustomSchemes

void onRegisterCustomSchemes(CefSchemeRegistrar registrar)

Provides an opportunity to register custom schemes. Do not keep a reference to the |registrar| object. This method is called on the main thread for each process and the registered schemes should be the same across all processes.

onContextInitialized

void onContextInitialized()

Called on the browser process UI thread immediately after the CEF context has been initialized.

getPrintHandler

CefPrintHandler getPrintHandler()

Return the handler for printing on Linux. If a print handler is not provided then printing will not be supported on the Linux platform.

返回:

a reference to a print handler implementation