设置Embbed Mozilla字符集

使用观察者，得到含字符集的第一次应答。

 

 

1)AddObserver

org.mozilla.browser.IMozillaWindow#onAttachBrowser(ChromeAdapter chromeAdapter, ChromeAdapter parentChromeAdapter)

// zzfprivate void addCharsetObserver() {// 新页面,重置。charset = null;obs = (nsIObserverService) Mozilla.getInstance().getServiceManager().getServiceByContractID("@mozilla.org/observer-service;1",nsIObserverService.NS_IOBSERVERSERVICE_IID);charsetObserver = new nsIObserver() {@Overridepublic nsISupports queryInterface(String uuid) {return Mozilla.queryInterface(this, uuid);}@Overridepublic void observe(nsISupports subject, String topic, String data) {if (charset == null && charsetObserverName.equals(topic)) {nsIHttpChannel httpChannel = (nsIHttpChannel) subject.queryInterface(nsIHttpChannel.NS_IHTTPCHANNEL_IID);httpChannel.visitResponseHeaders(new nsIHttpHeaderVisitor() {public void visitHeader(String header,String value) {// header=[Content-Type] value=[text/html;// charset=GB2312]if (charset == null&& "content-type".equals(header.toLowerCase())) {int eq = value.lastIndexOf('=');if (eq != -1 && value.length() > eq + 1) {charset = value.substring(eq + 1);// System.out.println("设置字符集="+// charset);}}}public nsISupports queryInterface(String uuid) {return null;}});}}};obs.addObserver(charsetObserver, charsetObserverName, false);} 

 

2)RemoveObserver

org.mozilla.browser.IMozillaWindow#onDetachBrowser

private void removeCharsetObserver() {obs.removeObserver(charsetObserver, charsetObserverName);} 

 

3)设置字符集

org.mozilla.browser.IMozillaWindow#onAttachBrowse

ChromeAdapter->nsIWebBrowser->nsIInterfaceRequestor->nsIDocShell#setDocumentCharsetInfo

docShell.setDocumentCharsetInfo(new nsIDocumentCharsetInfo() {nsIAtom atom = new nsIAtom() {@Overridepublic nsISupports queryInterface(String uuid) {return Mozilla.queryInterface(this, uuid);}@Overridepublic boolean _equals(String arg0) {return true;}@Overridepublic boolean equalsUTF8(String arg0) {return true;}@Overridepublic String toUTF8String() {// 会调用到此方法return charset == null ? "UTF-8" : charset;}};@Overridepublic nsISupports queryInterface(String uuid) {return Mozilla.queryInterface(this, uuid);}@Overridepublic nsIAtom getForcedCharset() {// 会调用到此方法return atom;}@Overridepublic boolean getForcedDetector() {return true;}@Overridepublic nsIAtom getParentCharset() {return null;}@Overridepublic int getParentCharsetSource() {return 0;}@Overridepublic void setForcedCharset(nsIAtom arg0) {// 会调用到此方法，参数arg0==null(不管页面是否设置了charset都是null)// System.out.println(arg0);}@Overridepublic void setForcedDetector(boolean arg0) {// System.out.println(arg0);}@Overridepublic void setParentCharset(nsIAtom arg0) {// System.out.println(arg0);}@Overridepublic void setParentCharsetSource(int arg0) {// System.out.println(arg0);}}); 

 

Gecko可深入应用于java embbed，当看到webkit喧哗时似有w无g的感觉，巨不爽。