formatted Project: http://git-wip-us.apache.org/repos/asf/wicket/repo Commit: http://git-wip-us.apache.org/repos/asf/wicket/commit/1c8dc6f7 Tree: http://git-wip-us.apache.org/repos/asf/wicket/tree/1c8dc6f7 Diff: http://git-wip-us.apache.org/repos/asf/wicket/diff/1c8dc6f7
Branch: refs/heads/5299-ajax-strategy Commit: 1c8dc6f77027a3b3bcc68e24b427daa7effd2aa2 Parents: 29b9422 Author: svenmeier <s...@meiers.net> Authored: Thu Aug 8 11:43:23 2013 +0200 Committer: svenmeier <s...@meiers.net> Committed: Thu Aug 8 11:43:23 2013 +0200 ---------------------------------------------------------------------- .../request/handler/render/WebPageRenderer.java | 135 +++++++++---------- 1 file changed, 62 insertions(+), 73 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/wicket/blob/1c8dc6f7/wicket-core/src/main/java/org/apache/wicket/request/handler/render/WebPageRenderer.java ---------------------------------------------------------------------- diff --git a/wicket-core/src/main/java/org/apache/wicket/request/handler/render/WebPageRenderer.java b/wicket-core/src/main/java/org/apache/wicket/request/handler/render/WebPageRenderer.java index c3899ec..ad39922 100644 --- a/wicket-core/src/main/java/org/apache/wicket/request/handler/render/WebPageRenderer.java +++ b/wicket-core/src/main/java/org/apache/wicket/request/handler/render/WebPageRenderer.java @@ -107,7 +107,7 @@ public class WebPageRenderer extends PageRenderer } // keep the original response - final WebResponse originalResponse = (WebResponse) requestCycle.getResponse(); + final WebResponse originalResponse = (WebResponse)requestCycle.getResponse(); // buffered web response for page BufferedWebResponse response = new BufferedWebResponse(originalResponse); @@ -123,10 +123,11 @@ public class WebPageRenderer extends PageRenderer if (scheduled == null && requestCycle.getRequestHandlerScheduledAfterCurrent() != null) { // This is a special case. - // During page render another request handler got scheduled and will want to overwrite - // the response, so we need to let it. - // Just preserve the meta data headers - originalResponse.reset(); // clear the initial actions because they are already copied into the new response's actions + // During page render another request handler got scheduled and will want to + // overwrite the response, so we need to let it. + // Just preserve the meta data headers. Clear the initial actions because they are + // already copied into the new response's actions + originalResponse.reset(); response.writeMetaData(originalResponse); return null; } @@ -191,15 +192,18 @@ public class WebPageRenderer extends PageRenderer boolean isAjax = isAjax(requestCycle); - boolean shouldPreserveClientUrl = ((WebRequest)requestCycle.getRequest()).shouldPreserveClientUrl(); + boolean shouldPreserveClientUrl = ((WebRequest)requestCycle.getRequest()) + .shouldPreserveClientUrl(); if (bufferedResponse != null) { - logger.warn("The Buffered response should be handled by BufferedResponseRequestHandler"); + logger + .warn("The Buffered response should be handled by BufferedResponseRequestHandler"); // if there is saved response for this URL render it bufferedResponse.writeTo((WebResponse)requestCycle.getResponse()); } - else { + else + { RedirectPolicy redirectPolicy = getRedirectPolicy(); boolean onePassRender = isOnePassRender(); @@ -210,7 +214,9 @@ public class WebPageRenderer extends PageRenderer boolean isNewPageInstance = getPageProvider().isNewPageInstance(); boolean isPageStateless = getPage().isPageStateless(); - if (shouldRenderPageAndWriteResponse(isAjax, onePassRender, isRedirectToRender, redirectPolicy, shouldPreserveClientUrl, targetEqualsCurrentUrl, isNewPageInstance, isPageStateless)) // + if (shouldRenderPageAndWriteResponse(isAjax, onePassRender, isRedirectToRender, + redirectPolicy, shouldPreserveClientUrl, targetEqualsCurrentUrl, isNewPageInstance, + isPageStateless)) // { BufferedWebResponse response = renderPage(currentUrl, requestCycle); if (response != null) @@ -218,30 +224,36 @@ public class WebPageRenderer extends PageRenderer response.writeTo((WebResponse)requestCycle.getResponse()); } } - else { + else + { boolean sessionTemporary = isSessionTemporary(); - if (shouldRedirectToTargetUrl(isAjax, redirectPolicy, isRedirectToRender, targetEqualsCurrentUrl, isNewPageInstance, isPageStateless, sessionTemporary)) + if (shouldRedirectToTargetUrl(isAjax, redirectPolicy, isRedirectToRender, + targetEqualsCurrentUrl, isNewPageInstance, isPageStateless, sessionTemporary)) { redirectTo(targetUrl, requestCycle); - // note: if we had session here we would render the page to buffer and then redirect to - // URL generated *after* page has been rendered (the statelessness may change during - // render). this would save one redirect because now we have to render to URL generated - // *before* page is rendered, render the page, get URL after render and if the URL is - // different (meaning page is not stateless), save the buffer and redirect again (which - // is pretty much what the next step does) + // note: if we had session here we would render the page to buffer and then + // redirect to URL generated *after* page has been rendered (the statelessness + // may change during render). this would save one redirect because now we have + // to render to URL generated *before* page is rendered, render the page, get + // URL after render and if the URL is different (meaning page is not stateless), + // save the buffer and redirect again (which is pretty much what the next step + // does) } else { if (redirectToBuffer == false && logger.isDebugEnabled()) { - String details = String.format("redirect strategy: '%s', isAjax: '%s', redirect policy: '%s', " + - "current url: '%s', target url: '%s', is new: '%s', is stateless: '%s', is temporary: '%s'", + String details = String + .format( + "redirect strategy: '%s', isAjax: '%s', redirect policy: '%s', " + + "current url: '%s', target url: '%s', is new: '%s', is stateless: '%s', is temporary: '%s'", Application.get().getRequestCycleSettings().getRenderStrategy(), isAjax, redirectPolicy, currentUrl, targetUrl, isNewPageInstance, - isPageStateless, sessionTemporary); - logger.debug("Falling back to Redirect_To_Buffer render strategy because none of the conditions " + - "matched. Details: " + details); + isPageStateless, sessionTemporary); + logger + .debug("Falling back to Redirect_To_Buffer render strategy because none of the conditions " + + "matched. Details: " + details); } // force creation of possible stateful page to get the final target url @@ -286,30 +298,17 @@ public class WebPageRenderer extends PageRenderer } } - // if - // render policy is always-redirect - // or - // it's redirect-to-render - // or - // its ajax and the targetUrl matches current url - // or - // targetUrl DONT matches current url and - // is new page instance - // or - // session is temporary and page is stateless - // just redirect - - protected boolean shouldRedirectToTargetUrl(boolean ajax, RedirectPolicy redirectPolicy, boolean redirectToRender, boolean targetEqualsCurrentUrl, boolean newPageInstance, boolean pageStateless,boolean sessionTemporary) { + /** + * Should the client be redirected to target url. + */ + protected boolean shouldRedirectToTargetUrl(boolean ajax, RedirectPolicy redirectPolicy, + boolean redirectToRender, boolean targetEqualsCurrentUrl, boolean newPageInstance, + boolean pageStateless, boolean sessionTemporary) + { return alwaysRedirect(redirectPolicy) // - || - redirectToRender // - || - (ajax && targetEqualsCurrentUrl) - || - (!targetEqualsCurrentUrl // - && - (newPageInstance || (sessionTemporary && pageStateless)) - ); + || redirectToRender // + || (ajax && targetEqualsCurrentUrl) || (!targetEqualsCurrentUrl // + && (newPageInstance || (sessionTemporary && pageStateless))); // if target URL is different and session is temporary and page is stateless // this is special case when page is stateless but there is no session so we can't // render it to buffer @@ -318,46 +317,36 @@ public class WebPageRenderer extends PageRenderer // can redirect to the url which will instantiate the instance of us } - // if - // the policy is never to redirect - // or - // its NOT ajax and - // one pass render mode is on and NOT forced to redirect - // or - // the targetUrl matches current url and page is NOT stateless and NOT a new instance - // or - // the targetUrl matches current url and it's redirect-to-render - // or - // the request determines that the current url should be preserved - // just render the page - protected boolean shouldRenderPageAndWriteResponse(boolean ajax, boolean onePassRender, boolean redirectToRender, RedirectPolicy redirectPolicy, boolean shouldPreserveClientUrl, boolean targetEqualsCurrentUrl, boolean newPageInstance, boolean pageStateless) { + /** + * Should the page be rendered immediately. + */ + protected boolean shouldRenderPageAndWriteResponse(boolean ajax, boolean onePassRender, + boolean redirectToRender, RedirectPolicy redirectPolicy, boolean shouldPreserveClientUrl, + boolean targetEqualsCurrentUrl, boolean newPageInstance, boolean pageStateless) + { return neverRedirect(redirectPolicy) - || - (!ajax && - ( - (onePassRender && notForcedRedirect(redirectPolicy)) - || - (targetEqualsCurrentUrl && notNewAndNotStatelessPage(newPageInstance, pageStateless))) - ) - || - (targetEqualsCurrentUrl && redirectToRender) - || - shouldPreserveClientUrl; + || (!ajax && ((onePassRender && notForcedRedirect(redirectPolicy)) || (targetEqualsCurrentUrl && notNewAndNotStatelessPage( + newPageInstance, pageStateless)))) || (targetEqualsCurrentUrl && redirectToRender) + || shouldPreserveClientUrl; } - private static boolean notNewAndNotStatelessPage(boolean newPageInstance, boolean pageStateless) { + private static boolean notNewAndNotStatelessPage(boolean newPageInstance, boolean pageStateless) + { return !newPageInstance && !pageStateless; } - private static boolean neverRedirect(RedirectPolicy redirectPolicy) { + private static boolean neverRedirect(RedirectPolicy redirectPolicy) + { return redirectPolicy == RedirectPolicy.NEVER_REDIRECT; } - private static boolean alwaysRedirect(RedirectPolicy redirectPolicy) { + private static boolean alwaysRedirect(RedirectPolicy redirectPolicy) + { return redirectPolicy == RedirectPolicy.ALWAYS_REDIRECT; } - private static boolean notForcedRedirect(RedirectPolicy redirectPolicy) { + private static boolean notForcedRedirect(RedirectPolicy redirectPolicy) + { return !alwaysRedirect(redirectPolicy); }
