org.cef.handler

接口 CefLifeSpanHandler

所有已知实现类:

CefClient, CefLifeSpanHandlerAdapter

public interface CefLifeSpanHandler

Implement this interface to handle events related to browser life span. The methods of this class will be called on the UI thread unless otherwise indicated.

方法概要

方法

限定符和类型	方法和说明
boolean	doClose(CefBrowser browser) Called when a browser has received a request to close.
void	onAfterCreated(CefBrowser browser) Handle creation of a new browser window.
void	onBeforeClose(CefBrowser browser) Called just before a browser is destroyed.
boolean	onBeforePopup(CefBrowser browser, String target_url, String target_frame_name) Called on the IO thread before a new popup window is created.
boolean	runModal(CefBrowser browser) Called when a modal window is about to display and the modal loop should begin running.

方法详细资料

onBeforePopup

boolean onBeforePopup(CefBrowser browser,
                    String target_url,
                    String target_frame_name)

Called on the IO thread before a new popup window is created. The |browser| and |frame| parameters represent the source of the popup request. The |target_url| and |target_frame_name| values may be empty if none were specified with the request. The |popupFeatures| structure contains information about the requested popup window. To allow creation of the popup window optionally modify |windowInfo|, |client|, |settings| and |no_javascript_access| and return false. To cancel creation of the popup window return true. The |client| and |settings| values will default to the source browser's values. The |no_javascript_access| value indicates whether the new browser window should be scriptable and in the same process as the source browser.

参数:

browser - The source of the popup request.

frame - The source of the popup request.

target_url - May be empty if none is specified with the request.

target_frame_name - May be empty if none is specified with the request.

target_disposition - Indicates where the user intended to open the popup (e.g. current tab, new tab, etc).

user_gesture - Will be true if the popup was opened via explicit user gesture (e.g. clicking a link) or false if the popup opened automatically (e.g. via the DomContentLoaded event).

popupFeatures - Contains information about the requested popup window

windowInfo - Can be modified.

client - Can be modified.

settings - Can be modified.

no_javascript_access - Can be modified.

返回:

To cancel creation of the popup window return true.

onAfterCreated

void onAfterCreated(CefBrowser browser)

Handle creation of a new browser window.

参数:

browser - The browser generating the event.

runModal

boolean runModal(CefBrowser browser)

Called when a modal window is about to display and the modal loop should begin running. Return false to use the default modal loop implementation or true to use a custom implementation.

参数:

browser - The browser generating the event.

返回:

false to use the default modal loop implementation.

doClose

boolean doClose(CefBrowser browser)

Called when a browser has received a request to close. If CEF created an OS window for the browser returning false will send an OS close notification to the browser window's top-level owner (e.g. WM_CLOSE on Windows, performClose: on OS-X and "delete_event" on Linux). If no OS window exists (window rendering disabled) returning false will cause the browser object to be destroyed immediately. Return true if the browser is parented to another window and that other window needs to receive close notification via some non-standard technique.

参数:

browser - The browser generating the event.

返回:

false will send an OS close notification to the browser window's top-level owner.

onBeforeClose

void onBeforeClose(CefBrowser browser)

Called just before a browser is destroyed. Release all references to the browser object and do not attempt to execute any methods on the browser object after this callback returns. If this is a modal window and a custom modal loop implementation was provided in runModal() this callback should be used to exit the custom modal loop. See doClose() documentation for additional usage information.

参数:

browser - The browser generating the event.