/*
* This message handler is to facilitate communication between the network
* thread and the browser thread.
*/
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_CONTENT_HEADERS:
/*
* This message is sent when the LoadListener has headers
* available. The headers are sent onto WebCore to see what we
* should do with them.
*/
if (mNativeLoader != 0) {
commitHeaders();
}
break;
case MSG_CONTENT_DATA:
/*
* This message is sent when the LoadListener has data available
* in it's data buffer. This data buffer could be filled from a
* file (this thread) or from http (Network thread).
*/
if (mNativeLoader != 0) {
commitLoad();
}
break;
case MSG_CONTENT_FINISHED:
/*
* This message is sent when the LoadListener knows that the
* load is finished. This message is not sent in the case of an
* error.
*
*/
tearDown();
break;
case MSG_CONTENT_ERROR:
/*
* This message is sent when a load error has occured. The
* LoadListener will clean itself up.
*/
notifyError();
tearDown();
break;
case MSG_LOCATION_CHANGED:
/*
* This message is sent from LoadListener.endData to inform the
* browser activity that the location of the top level page
* changed.
*/
doRedirect();
break;
case MSG_LOCATION_CHANGED_REQUEST:
/*
* This message is sent from endData on receipt of a 307
* Temporary Redirect in response to a POST -- the user must
* confirm whether to continue loading. If the user says Yes,
* we simply call MSG_LOCATION_CHANGED. If the user says No,
* we call MSG_CONTENT_FINISHED.
*/
Message contMsg = obtainMessage(MSG_LOCATION_CHANGED);
Message stopMsg = obtainMessage(MSG_CONTENT_FINISHED);
mBrowserFrame.getCallbackProxy().onFormResubmission(stopMsg, contMsg);
break;
}
}
/**
* Start loading a resource.
*
* @param loaderHandle The native ResourceLoader that is the target of the data.
* @param url The url to load.
* @param method The http method.
* @param headers The http headers.
* @param postData If the method is "POST" postData is sent as the request body. Is null when
* empty.
* @param cacheMode The cache mode to use when loading this resource.
* @param isHighPriority True if this resource needs to be put at the front of the network queue.
* @param synchronous True if the load is synchronous.
* @return A newly created LoadListener object.
*/
private LoadListener startLoadingResource(
int loaderHandle,
String url,
String method,
HashMap headers,
byte[] postData,
int cacheMode,
boolean isHighPriority,
boolean synchronous) {
PerfChecker checker = new PerfChecker();
if (mSettings.getCacheMode() != WebSettings.LOAD_DEFAULT) {
cacheMode = mSettings.getCacheMode();
}
if (method.equals("POST")) {
// Don't use the cache on POSTs when issuing a normal POST
// request.
if (cacheMode == WebSettings.LOAD_NORMAL) {
cacheMode = WebSettings.LOAD_NO_CACHE;
}
if (mSettings.getSavePassword() && hasPasswordField()) {
try {
if (WebView.DEBUG) {
Assert.assertNotNull(mCallbackProxy.getBackForwardList().getCurrentItem());
}
WebAddress uri =
new WebAddress(mCallbackProxy.getBackForwardList().getCurrentItem().getUrl());
String schemePlusHost = uri.mScheme + uri.mHost;
String[] ret = getUsernamePassword();
// Has the user entered a username/password pair and is
// there some POST data
if (ret != null && postData != null && ret[0].length() > 0 && ret[1].length() > 0) {
// Check to see if the username & password appear in
// the post data (there could be another form on the
// page and that was posted instead.
String postString = new String(postData);
if (postString.contains(URLEncoder.encode(ret[0]))
&& postString.contains(URLEncoder.encode(ret[1]))) {
String[] saved = mDatabase.getUsernamePassword(schemePlusHost);
if (saved != null) {
// null username implies that user has chosen not to
// save password
if (saved[0] != null) {
// non-null username implies that user has
// chosen to save password, so update the
// recorded password
mDatabase.setUsernamePassword(schemePlusHost, ret[0], ret[1]);
}
} else {
// CallbackProxy will handle creating the resume
// message
mCallbackProxy.onSavePassword(schemePlusHost, ret[0], ret[1], null);
}
}
}
} catch (ParseException ex) {
// if it is bad uri, don't save its password
}
}
}
// is this resource the main-frame top-level page?
boolean isMainFramePage = mIsMainFrame;
if (WebView.LOGV_ENABLED) {
Log.v(
LOGTAG,
"startLoadingResource: url="
+ url
+ ", method="
+ method
+ ", postData="
+ postData
+ ", isHighPriority="
+ isHighPriority
+ ", isMainFramePage="
+ isMainFramePage);
}
// Create a LoadListener
LoadListener loadListener =
LoadListener.getLoadListener(
mContext, this, url, loaderHandle, synchronous, isMainFramePage);
mCallbackProxy.onLoadResource(url);
if (LoadListener.getNativeLoaderCount() > MAX_OUTSTANDING_REQUESTS) {
loadListener.error(
android.net.http.EventHandler.ERROR,
mContext.getString(com.android.internal.R.string.httpErrorTooManyRequests));
loadListener.notifyError();
loadListener.tearDown();
return null;
}
// during synchronous load, the WebViewCore thread is blocked, so we
// need to endCacheTransaction first so that http thread won't be
// blocked in setupFile() when createCacheFile.
if (synchronous) {
CacheManager.endCacheTransaction();
}
FrameLoader loader = new FrameLoader(loadListener, mSettings, method, isHighPriority);
loader.setHeaders(headers);
loader.setPostData(postData);
// Set the load mode to the mode used for the current page.
// If WebKit wants validation, go to network directly.
loader.setCacheMode(
headers.containsKey("If-Modified-Since") || headers.containsKey("If-None-Match")
? WebSettings.LOAD_NO_CACHE
: cacheMode);
// Set referrer to current URL?
if (!loader.executeLoad()) {
checker.responseAlert("startLoadingResource fail");
}
checker.responseAlert("startLoadingResource succeed");
if (synchronous) {
CacheManager.startCacheTransaction();
}
return !synchronous ? loadListener : null;
}
