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package org.apache.tapestry.services.impl; |
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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import org.apache.hivemind.Resource; |
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import org.apache.hivemind.util.Defense; |
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import org.apache.tapestry.*; |
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import org.apache.tapestry.asset.AssetFactory; |
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import org.apache.tapestry.engine.IEngineService; |
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import org.apache.tapestry.engine.NullWriter; |
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import org.apache.tapestry.markup.MarkupWriterSource; |
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import org.apache.tapestry.markup.NestedMarkupWriterImpl; |
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import org.apache.tapestry.services.RequestLocaleManager; |
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import org.apache.tapestry.services.ResponseBuilder; |
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import org.apache.tapestry.services.ServiceConstants; |
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import org.apache.tapestry.util.ContentType; |
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import org.apache.tapestry.util.PageRenderSupportImpl; |
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import org.apache.tapestry.util.ScriptUtils; |
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import org.apache.tapestry.web.WebResponse; |
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import java.io.IOException; |
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import java.io.PrintWriter; |
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import java.util.*; |
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public class DojoAjaxResponseBuilder implements ResponseBuilder |
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{ |
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private static final Log _log = LogFactory.getLog(DojoAjaxResponseBuilder.class); |
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private static final String NEWLINE = System.getProperty("line.separator"); |
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private final AssetFactory _assetFactory; |
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private final String _namespace; |
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private PageRenderSupportImpl _prs; |
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private RequestLocaleManager _localeManager; |
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private MarkupWriterSource _markupWriterSource; |
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private WebResponse _response; |
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private List _errorPages; |
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private ContentType _contentType; |
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private IMarkupWriter _writer; |
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private List _parts = new ArrayList(); |
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private Map _writers = new HashMap(); |
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private List _statusMessages; |
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private IRequestCycle _cycle; |
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private IEngineService _pageService; |
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private boolean _pageRender = false; |
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private boolean _responseStarted = false; |
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public DojoAjaxResponseBuilder(IRequestCycle cycle, IMarkupWriter writer, List parts, List errorPages) |
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{ |
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Defense.notNull(cycle, "cycle"); |
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Defense.notNull(writer, "writer"); |
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_writer = writer; |
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_cycle = cycle; |
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if (parts != null) |
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_parts.addAll(parts); |
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_namespace = null; |
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_assetFactory = null; |
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_errorPages = errorPages; |
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} |
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public DojoAjaxResponseBuilder(IRequestCycle cycle, IMarkupWriter writer, List parts) |
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{ |
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this(cycle, writer, parts, null); |
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} |
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public DojoAjaxResponseBuilder(IRequestCycle cycle, |
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RequestLocaleManager localeManager, |
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MarkupWriterSource markupWriterSource, |
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WebResponse webResponse, List errorPages, |
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AssetFactory assetFactory, String namespace, IEngineService pageService) |
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{ |
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Defense.notNull(cycle, "cycle"); |
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Defense.notNull(assetFactory, "assetService"); |
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_cycle = cycle; |
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_localeManager = localeManager; |
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_markupWriterSource = markupWriterSource; |
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_response = webResponse; |
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_errorPages = errorPages; |
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_pageService = pageService; |
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_assetFactory = assetFactory; |
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_namespace = namespace; |
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} |
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public boolean isDynamic() |
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{ |
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return true; |
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} |
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public void renderResponse(IRequestCycle cycle) |
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throws IOException |
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{ |
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if (_responseStarted) |
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{ |
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clearPartialWriters(); |
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cycle.renderPage(this); |
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TapestryUtils.removePageRenderSupport(cycle); |
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endResponse(); |
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_writer.close(); |
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return; |
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} |
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_localeManager.persistLocale(); |
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_contentType = new ContentType(CONTENT_TYPE + ";charset=" + cycle.getInfrastructure().getOutputEncoding()); |
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String encoding = _contentType.getParameter(ENCODING_KEY); |
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if (encoding == null) |
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{ |
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encoding = cycle.getEngine().getOutputEncoding(); |
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_contentType.setParameter(ENCODING_KEY, encoding); |
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} |
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if (_writer == null) |
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{ |
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parseParameters(cycle); |
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PrintWriter printWriter = _response.getPrintWriter(_contentType); |
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_writer = _markupWriterSource.newMarkupWriter(printWriter, _contentType); |
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} |
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_prs = new PageRenderSupportImpl(_assetFactory, _namespace, cycle.getPage().getLocation(), this); |
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TapestryUtils.storePageRenderSupport(cycle, _prs); |
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cycle.renderPage(this); |
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TapestryUtils.removePageRenderSupport(cycle); |
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endResponse(); |
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_writer.close(); |
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} |
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public void flush() |
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throws IOException |
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{ |
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_writer.flush(); |
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if (!_responseStarted) |
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beginResponse(); |
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} |
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public void updateComponent(String id) |
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{ |
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if (!_parts.contains(id)) |
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_parts.add(id); |
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} |
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public IMarkupWriter getWriter() |
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{ |
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return _writer; |
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} |
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void setWriter(IMarkupWriter writer) |
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{ |
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_writer = writer; |
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} |
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public boolean isBodyScriptAllowed(IComponent target) |
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{ |
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if (_pageRender) |
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return true; |
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if (target != null |
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&& IPage.class.isInstance(target) |
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|| (IForm.class.isInstance(target) |
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&& ((IForm)target).isFormFieldUpdating())) |
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return true; |
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return contains(target); |
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} |
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public boolean isExternalScriptAllowed(IComponent target) |
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{ |
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if (_pageRender) |
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return true; |
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if (target != null |
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&& IPage.class.isInstance(target) |
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|| (IForm.class.isInstance(target) |
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&& ((IForm)target).isFormFieldUpdating())) |
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return true; |
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return contains(target); |
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} |
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public boolean isInitializationScriptAllowed(IComponent target) |
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{ |
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if (_log.isDebugEnabled()) |
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{ |
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_log.debug("isInitializationScriptAllowed(" + target + ") contains?: " + contains(target) + " _pageRender: " + _pageRender); |
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} |
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if (_pageRender) |
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return true; |
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if (target != null |
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&& IPage.class.isInstance(target) |
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|| (IForm.class.isInstance(target) |
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&& ((IForm)target).isFormFieldUpdating())) |
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return true; |
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return contains(target); |
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} |
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public boolean isImageInitializationAllowed(IComponent target) |
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{ |
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if (_pageRender) |
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return true; |
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if (target != null |
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&& IPage.class.isInstance(target) |
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|| (IForm.class.isInstance(target) |
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&& ((IForm)target).isFormFieldUpdating())) |
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return true; |
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return contains(target); |
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} |
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public String getPreloadedImageReference(IComponent target, IAsset source) |
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{ |
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return _prs.getPreloadedImageReference(target, source); |
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} |
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public String getPreloadedImageReference(IComponent target, String url) |
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{ |
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return _prs.getPreloadedImageReference(target, url); |
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} |
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public String getPreloadedImageReference(String url) |
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{ |
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return _prs.getPreloadedImageReference(url); |
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} |
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public void addBodyScript(IComponent target, String script) |
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{ |
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_prs.addBodyScript(target, script); |
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} |
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public void addBodyScript(String script) |
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{ |
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_prs.addBodyScript(script); |
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} |
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public void addExternalScript(IComponent target, Resource resource) |
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{ |
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_prs.addExternalScript(target, resource); |
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} |
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public void addExternalScript(Resource resource) |
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{ |
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_prs.addExternalScript(resource); |
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} |
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public void addInitializationScript(IComponent target, String script) |
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{ |
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_prs.addInitializationScript(target, script); |
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} |
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public void addInitializationScript(String script) |
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{ |
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_prs.addInitializationScript(script); |
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} |
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public void addScriptAfterInitialization(IComponent target, String script) |
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{ |
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_prs.addScriptAfterInitialization(target, script); |
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} |
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public String getUniqueString(String baseValue) |
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{ |
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return _prs.getUniqueString(baseValue); |
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} |
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public void writeBodyScript(IMarkupWriter writer, IRequestCycle cycle) |
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{ |
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_prs.writeBodyScript(writer, cycle); |
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} |
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public void writeInitializationScript(IMarkupWriter writer) |
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{ |
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_prs.writeInitializationScript(writer); |
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} |
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public void beginBodyScript(IMarkupWriter normalWriter, IRequestCycle cycle) |
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{ |
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IMarkupWriter writer = getWriter(ResponseBuilder.BODY_SCRIPT, ResponseBuilder.SCRIPT_TYPE); |
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writer.begin("script"); |
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writer.printRaw(NEWLINE + "//<![CDATA[" + NEWLINE); |
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} |
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public void endBodyScript(IMarkupWriter normalWriter, IRequestCycle cycle) |
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{ |
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IMarkupWriter writer = getWriter(ResponseBuilder.BODY_SCRIPT, ResponseBuilder.SCRIPT_TYPE); |
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writer.printRaw(NEWLINE + "//]]>" + NEWLINE); |
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writer.end(); |
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} |
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public void writeBodyScript(IMarkupWriter normalWriter, String script, IRequestCycle cycle) |
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{ |
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IMarkupWriter writer = getWriter(ResponseBuilder.BODY_SCRIPT, ResponseBuilder.SCRIPT_TYPE); |
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writer.printRaw(script); |
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} |
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public void writeExternalScript(IMarkupWriter normalWriter, String url, IRequestCycle cycle) |
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{ |
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IMarkupWriter writer = getWriter(ResponseBuilder.INCLUDE_SCRIPT, ResponseBuilder.SCRIPT_TYPE); |
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writer.beginEmpty("include"); |
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writer.attribute("url", url); |
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} |
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public void writeImageInitializations(IMarkupWriter normalWriter, String script, String preloadName, IRequestCycle cycle) |
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{ |
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IMarkupWriter writer = getWriter(ResponseBuilder.BODY_SCRIPT, ResponseBuilder.SCRIPT_TYPE); |
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writer.printRaw(NEWLINE + preloadName + " = [];" + NEWLINE); |
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writer.printRaw("if (document.images) {" + NEWLINE); |
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writer.printRaw(script); |
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writer.printRaw("}" + NEWLINE); |
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} |
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public void writeInitializationScript(IMarkupWriter normalWriter, String script) |
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{ |
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IMarkupWriter writer = getWriter(ResponseBuilder.INITIALIZATION_SCRIPT, ResponseBuilder.SCRIPT_TYPE); |
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writer.begin("script"); |
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writer.printRaw(NEWLINE + "//<![CDATA[" + NEWLINE); |
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writer.printRaw(script); |
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writer.printRaw(NEWLINE + "//]]>" + NEWLINE); |
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writer.end(); |
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} |
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public void addStatus(IMarkupWriter normalWriter, String text) |
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{ |
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addStatusMessage(normalWriter, "info", text); |
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} |
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public void addStatusMessage(IMarkupWriter normalWriter, String category, String text) |
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{ |
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if (_statusMessages==null) |
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{ |
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_statusMessages = new ArrayList(); |
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} |
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_statusMessages.add(category); |
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_statusMessages.add(text); |
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} |
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void writeStatusMessages() { |
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|
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for (int i=0; i < _statusMessages.size(); i+=2) |
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{ |
571 |
0 |
IMarkupWriter writer = getWriter((String) _statusMessages.get(i), "status"); |
572 |
|
|
573 |
0 |
writer.printRaw((String) _statusMessages.get(i+1)); |
574 |
|
} |
575 |
|
|
576 |
0 |
_statusMessages = null; |
577 |
0 |
} |
578 |
|
|
579 |
|
|
580 |
|
|
581 |
|
|
582 |
|
public void render(IMarkupWriter writer, IRender render, IRequestCycle cycle) |
583 |
|
{ |
584 |
|
|
585 |
|
|
586 |
6 |
if (NestedMarkupWriterImpl.class.isInstance(writer) && !NullWriter.class.isInstance(writer)) |
587 |
|
{ |
588 |
0 |
render.render(writer, cycle); |
589 |
0 |
return; |
590 |
|
} |
591 |
|
|
592 |
|
|
593 |
|
|
594 |
6 |
if (IPage.class.isInstance(render)) |
595 |
|
{ |
596 |
2 |
IPage page = (IPage)render; |
597 |
2 |
String errorPage = getErrorPage(page.getPageName()); |
598 |
|
|
599 |
2 |
if (errorPage != null) |
600 |
|
{ |
601 |
0 |
_pageRender = true; |
602 |
|
|
603 |
0 |
clearPartialWriters(); |
604 |
0 |
render.render(getWriter(errorPage, EXCEPTION_TYPE), cycle); |
605 |
0 |
return; |
606 |
|
} |
607 |
|
|
608 |
|
|
609 |
|
|
610 |
|
|
611 |
|
|
612 |
2 |
if (_cycle.getParameter(ServiceConstants.PAGE) != null |
613 |
|
&& !page.getPageName().equals(_cycle.getParameter(ServiceConstants.PAGE))) |
614 |
|
{ |
615 |
1 |
IMarkupWriter urlwriter = _writer.getNestedWriter(); |
616 |
|
|
617 |
1 |
urlwriter.begin("response"); |
618 |
1 |
urlwriter.attribute("type", PAGE_TYPE); |
619 |
1 |
urlwriter.attribute("url", _pageService.getLink(true, page.getPageName()).getAbsoluteURL()); |
620 |
|
|
621 |
1 |
_writers.put(PAGE_TYPE, urlwriter); |
622 |
1 |
return; |
623 |
|
} |
624 |
|
} |
625 |
|
|
626 |
5 |
if (IComponent.class.isInstance(render) |
627 |
|
&& contains((IComponent)render, ((IComponent)render).peekClientId())) |
628 |
|
{ |
629 |
1 |
render.render(getComponentWriter( ((IComponent)render).peekClientId() ), cycle); |
630 |
1 |
return; |
631 |
|
} |
632 |
|
|
633 |
|
|
634 |
|
|
635 |
4 |
render.render(NullWriter.getSharedInstance(), cycle); |
636 |
4 |
} |
637 |
|
|
638 |
|
private String getErrorPage(String pageName) |
639 |
|
{ |
640 |
2 |
for (int i=0; i < _errorPages.size(); i++) |
641 |
|
{ |
642 |
0 |
String page = (String)_errorPages.get(i); |
643 |
|
|
644 |
0 |
if (pageName.indexOf(page) > -1) |
645 |
0 |
return page; |
646 |
|
} |
647 |
|
|
648 |
2 |
return null; |
649 |
|
} |
650 |
|
|
651 |
|
IMarkupWriter getComponentWriter(String id) |
652 |
|
{ |
653 |
2 |
return getWriter(id, ELEMENT_TYPE); |
654 |
|
} |
655 |
|
|
656 |
|
|
657 |
|
|
658 |
|
|
659 |
|
|
660 |
|
public IMarkupWriter getWriter(String id, String type) |
661 |
|
{ |
662 |
9 |
Defense.notNull(id, "id can't be null"); |
663 |
|
|
664 |
9 |
if (!_responseStarted) |
665 |
2 |
beginResponse(); |
666 |
|
|
667 |
9 |
IMarkupWriter w = (IMarkupWriter)_writers.get(id); |
668 |
9 |
if (w != null) |
669 |
4 |
return w; |
670 |
|
|
671 |
|
|
672 |
|
|
673 |
|
|
674 |
|
|
675 |
|
|
676 |
5 |
IMarkupWriter nestedWriter = _writer.getNestedWriter(); |
677 |
5 |
nestedWriter.begin("response"); |
678 |
5 |
nestedWriter.attribute("id", id); |
679 |
5 |
if (type != null) |
680 |
5 |
nestedWriter.attribute("type", type); |
681 |
|
|
682 |
5 |
_writers.put(id, nestedWriter); |
683 |
|
|
684 |
5 |
return nestedWriter; |
685 |
|
} |
686 |
|
|
687 |
|
|
688 |
|
|
689 |
|
|
690 |
|
|
691 |
|
|
692 |
|
void beginResponse() |
693 |
|
{ |
694 |
5 |
_responseStarted = true; |
695 |
|
|
696 |
5 |
_writer.printRaw("<?xml version=\"1.0\" encoding=\"" + _cycle.getInfrastructure().getOutputEncoding() + "\"?>"); |
697 |
5 |
_writer.printRaw("<!DOCTYPE html " |
698 |
|
+ "PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" " |
699 |
|
+ "\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\" [" + NEWLINE |
700 |
|
+ "<!ENTITY nbsp ' '>" + NEWLINE |
701 |
|
+ "]>" + NEWLINE); |
702 |
|
|
703 |
5 |
_writer.printRaw("<ajax-response>"); |
704 |
5 |
} |
705 |
|
|
706 |
|
|
707 |
|
|
708 |
|
|
709 |
|
|
710 |
|
void clearPartialWriters() |
711 |
|
{ |
712 |
1 |
_writers.clear(); |
713 |
1 |
} |
714 |
|
|
715 |
|
|
716 |
|
|
717 |
|
|
718 |
|
|
719 |
|
|
720 |
|
void endResponse() |
721 |
|
{ |
722 |
4 |
if (!_responseStarted) |
723 |
|
{ |
724 |
0 |
beginResponse(); |
725 |
|
} |
726 |
|
|
727 |
|
|
728 |
|
|
729 |
4 |
if (_statusMessages != null) |
730 |
0 |
writeStatusMessages(); |
731 |
|
|
732 |
4 |
Iterator keys = _writers.keySet().iterator(); |
733 |
|
String buffer; |
734 |
|
|
735 |
7 |
while (keys.hasNext()) |
736 |
|
{ |
737 |
3 |
String key = (String)keys.next(); |
738 |
3 |
NestedMarkupWriter nw = (NestedMarkupWriter)_writers.get(key); |
739 |
|
|
740 |
3 |
buffer = nw.getBuffer(); |
741 |
|
|
742 |
3 |
if (_log.isDebugEnabled()) |
743 |
|
{ |
744 |
0 |
_log.debug("Ajax markup buffer for key <" + key + " contains: " + buffer); |
745 |
|
} |
746 |
|
|
747 |
3 |
if (!isScriptWriter(key)) |
748 |
0 |
_writer.printRaw(ScriptUtils.ensureValidScriptTags(buffer)); |
749 |
|
else |
750 |
3 |
_writer.printRaw(buffer); |
751 |
3 |
} |
752 |
|
|
753 |
|
|
754 |
|
|
755 |
4 |
_writer.printRaw("</ajax-response>"); |
756 |
4 |
_writer.flush(); |
757 |
4 |
} |
758 |
|
|
759 |
|
|
760 |
|
|
761 |
|
|
762 |
|
|
763 |
|
|
764 |
|
|
765 |
|
|
766 |
|
|
767 |
|
|
768 |
|
boolean isScriptWriter(String key) |
769 |
|
{ |
770 |
3 |
if (key == null) |
771 |
0 |
return false; |
772 |
|
|
773 |
3 |
if (ResponseBuilder.BODY_SCRIPT.equals(key) |
774 |
|
|| ResponseBuilder.INCLUDE_SCRIPT.equals(key) |
775 |
|
|| ResponseBuilder.INITIALIZATION_SCRIPT.equals(key)) |
776 |
3 |
return true; |
777 |
|
|
778 |
0 |
return false; |
779 |
|
} |
780 |
|
|
781 |
|
|
782 |
|
|
783 |
|
|
784 |
|
|
785 |
|
|
786 |
|
|
787 |
|
|
788 |
|
void parseParameters(IRequestCycle cycle) |
789 |
|
{ |
790 |
1 |
Object[] updateParts = cycle.getParameters(ServiceConstants.UPDATE_PARTS); |
791 |
|
|
792 |
1 |
if (updateParts == null) |
793 |
0 |
return; |
794 |
|
|
795 |
2 |
for(int i = 0; i < updateParts.length; i++) |
796 |
1 |
_parts.add(updateParts[i].toString()); |
797 |
1 |
} |
798 |
|
|
799 |
|
|
800 |
|
|
801 |
|
|
802 |
|
|
803 |
|
|
804 |
|
|
805 |
|
|
806 |
|
public boolean contains(IComponent target) |
807 |
|
{ |
808 |
8 |
if (target == null) |
809 |
1 |
return false; |
810 |
|
|
811 |
7 |
String id = target.getClientId(); |
812 |
|
|
813 |
7 |
return contains(target, id); |
814 |
|
} |
815 |
|
|
816 |
|
boolean contains(IComponent target, String id) |
817 |
|
{ |
818 |
9 |
if (_parts.contains(id)) |
819 |
3 |
return true; |
820 |
|
|
821 |
6 |
Iterator it = _cycle.renderStackIterator(); |
822 |
7 |
while (it.hasNext()) |
823 |
|
{ |
824 |
1 |
IComponent comp = (IComponent)it.next(); |
825 |
1 |
String compId = comp.getClientId(); |
826 |
|
|
827 |
1 |
if (comp != target && _parts.contains(compId)) |
828 |
0 |
return true; |
829 |
1 |
} |
830 |
|
|
831 |
6 |
return false; |
832 |
|
} |
833 |
|
|
834 |
|
|
835 |
|
|
836 |
|
|
837 |
|
public boolean explicitlyContains(IComponent target) |
838 |
|
{ |
839 |
0 |
if (target == null) |
840 |
0 |
return false; |
841 |
|
|
842 |
0 |
return _parts.contains(target.getId()); |
843 |
|
} |
844 |
|
} |