org.cef.handler

类 CefLifeSpanHandlerAdapter

java.lang.Object

org.cef.handler.CefLifeSpanHandlerAdapter

所有已实现的接口:

CefLifeSpanHandler

public abstract class CefLifeSpanHandlerAdapter
extends java.lang.Object
implements CefLifeSpanHandler

An abstract adapter class for receiving life span events. The methods in this class are empty. This class exists as convenience for creating handler objects.

用于接收寿命事件的抽象适配器类。此类中的方法为空。此类存在是为了创建处理程序对象的便利。

构造器概要

构造器

构造器和说明
CefLifeSpanHandlerAdapter()

方法概要

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. 在浏览器收到关闭请求时调用。
void	onAfterCreated(CefBrowser browser) Handle creation of a new browser window. 处理新浏览器窗口的创建。
void	onBeforeClose(CefBrowser browser) Called just before a browser is destroyed. 在浏览器被销毁之前调用。
boolean	onBeforePopup(CefBrowser browser, CefFrame frame, java.lang.String target_url, java.lang.String target_frame_name) Called on the IO thread before a new popup window is created. 在创建新的弹出窗口之前调用IO线程。

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

CefLifeSpanHandlerAdapter

public CefLifeSpanHandlerAdapter()

方法详细资料

doClose

public boolean doClose(CefBrowser browser)

从接口复制的说明: CefLifeSpanHandler

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.

在浏览器收到关闭请求时调用。如果CEF为浏览器创建了一个OS窗口，返回false将向浏览器窗口的顶级所有者发送操作系统关闭通知（例如，Windows上的WM_CLOSE，OS-X上的performClose：和Linux上的“delete_event”）。如果不存在OS窗口（禁用窗口渲染），则返回false将导致浏览器对象立即被销毁。如果浏览器是另一个窗口的父级，并且其他窗口需要通过某种非标准技术接收关闭通知，则返回true。

指定者:

doClose 在接口中 CefLifeSpanHandler

参数:

browser - The browser generating the event. - 生成事件的浏览器。

返回:

false will send an OS close notification to the browser window's top-level owner. false会向浏览器窗口的顶级所有者发送操作系统关闭通知。

onAfterCreated

public void onAfterCreated(CefBrowser browser)

从接口复制的说明: CefLifeSpanHandler

Handle creation of a new browser window.

处理新浏览器窗口的创建。

指定者:

onAfterCreated 在接口中 CefLifeSpanHandler

参数:

browser - The browser generating the event. - 生成事件的浏览器。

onBeforeClose

public void onBeforeClose(CefBrowser browser)

从接口复制的说明: CefLifeSpanHandler

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.

在浏览器被销毁之前调用。释放对浏览器对象的所有引用，并且在此回调返回后不要尝试在浏览器对象上执行任何方法。如果这是一个模态窗口并且在runModal（）中提供了自定义模态循环实现，则应该使用此回调来退出自定义模态循环。有关其他用法信息，请参阅doClose（）文档。

指定者:

onBeforeClose 在接口中 CefLifeSpanHandler

参数:

browser - The browser generating the event. - 生成事件的浏览器。

onBeforePopup

public boolean onBeforePopup(CefBrowser browser,
                             CefFrame frame,
                             java.lang.String target_url,
                             java.lang.String target_frame_name)

从接口复制的说明: CefLifeSpanHandler

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.

(注意:此方法target_frame_name之后的参数已被注释，但是注释没有改，看到这些莫名其妙的参数可忽略，可查阅JCEF源码中的相关类)
在创建新的弹出窗口之前调用IO线程。 |browser|和| frame |参数表示弹出请求的来源。 | target_url |和| target_frame_name |如果没有为请求指定值，则值可能为空。 | popupFeatures | structure包含有关请求的弹出窗口的信息。要允许创建弹出窗口，可以选择修改| windowInfo |，| client |，| settings |和| no_javascript_access |并返回false。要取消创建弹出窗口，请返回true。 |客户|和|设置|值将默认为源浏览器的值。 | no_javascript_access | value表示新浏览器窗口是否应该是可编写脚本的，并且与源浏览器处于同一进程中。

指定者:

onBeforePopup 在接口中 CefLifeSpanHandler

参数:

browser - The source of the popup request. - 弹出请求的来源。

frame - The source of the popup request. - 弹出请求的来源。

target_url - May be empty if none is specified with the request. - 如果请求未指定，则可以为空。

target_frame_name - May be empty if none is specified with the request. - 如果请求未指定，则可以为空。

返回:

To cancel creation of the popup window return true. 要取消创建弹出窗口，请返回true。