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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 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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_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 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("\n//<![CDATA[\n"); |
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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("\n//]]>\n"); |
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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("\n" + preloadName + " = [];\n"); |
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writer.printRaw("if (document.images) {\n"); |
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writer.printRaw(script); |
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writer.printRaw("}\n"); |
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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("\n//<![CDATA[\n"); |
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writer.printRaw(script); |
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writer.printRaw("\n//]]>\n"); |
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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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for (int i=0; i < _statusMessages.size(); i+=2) |
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{ |
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IMarkupWriter writer = getWriter((String) _statusMessages.get(i), "status"); |
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writer.printRaw((String) _statusMessages.get(i+1)); |
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} |
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_statusMessages = null; |
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} |
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574 |
|
public void render(IMarkupWriter writer, IRender render, IRequestCycle cycle) |
575 |
|
{ |
576 |
|
|
577 |
|
|
578 |
6 |
if (NestedMarkupWriterImpl.class.isInstance(writer)) { |
579 |
0 |
render.render(writer, cycle); |
580 |
0 |
return; |
581 |
|
} |
582 |
|
|
583 |
|
|
584 |
|
|
585 |
6 |
if (IPage.class.isInstance(render)) { |
586 |
|
|
587 |
2 |
IPage page = (IPage)render; |
588 |
2 |
String errorPage = getErrorPage(page.getPageName()); |
589 |
|
|
590 |
2 |
if (errorPage != null) { |
591 |
|
|
592 |
0 |
_pageRender = true; |
593 |
0 |
clearPartialWriters(); |
594 |
0 |
render.render(getWriter(errorPage, EXCEPTION_TYPE), cycle); |
595 |
0 |
return; |
596 |
|
} |
597 |
|
|
598 |
|
|
599 |
|
|
600 |
|
|
601 |
|
|
602 |
2 |
if (_cycle.getParameter(ServiceConstants.PAGE) != null |
603 |
|
&& !page.getPageName().equals(_cycle.getParameter(ServiceConstants.PAGE))) { |
604 |
|
|
605 |
1 |
IMarkupWriter urlwriter = _writer.getNestedWriter(); |
606 |
|
|
607 |
1 |
urlwriter.begin("response"); |
608 |
1 |
urlwriter.attribute("type", PAGE_TYPE); |
609 |
1 |
urlwriter.attribute("url", _pageService.getLink(true, page.getPageName()).getAbsoluteURL()); |
610 |
|
|
611 |
1 |
_writers.put(PAGE_TYPE, urlwriter); |
612 |
1 |
return; |
613 |
|
} |
614 |
|
} |
615 |
|
|
616 |
5 |
if (IComponent.class.isInstance(render) |
617 |
|
&& contains((IComponent)render, ((IComponent)render).peekClientId())) |
618 |
|
{ |
619 |
1 |
render.render(getComponentWriter( ((IComponent)render).peekClientId() ), cycle); |
620 |
1 |
return; |
621 |
|
} |
622 |
|
|
623 |
|
|
624 |
|
|
625 |
4 |
render.render(NullWriter.getSharedInstance(), cycle); |
626 |
4 |
} |
627 |
|
|
628 |
|
private String getErrorPage(String pageName) |
629 |
|
{ |
630 |
2 |
for (int i=0; i < _errorPages.size(); i++) { |
631 |
0 |
String page = (String)_errorPages.get(i); |
632 |
|
|
633 |
0 |
if (pageName.indexOf(page) > -1) |
634 |
0 |
return page; |
635 |
|
} |
636 |
|
|
637 |
2 |
return null; |
638 |
|
} |
639 |
|
|
640 |
|
IMarkupWriter getComponentWriter(String id) |
641 |
|
{ |
642 |
2 |
return getWriter(id, ELEMENT_TYPE); |
643 |
|
} |
644 |
|
|
645 |
|
|
646 |
|
|
647 |
|
|
648 |
|
|
649 |
|
public IMarkupWriter getWriter(String id, String type) |
650 |
|
{ |
651 |
9 |
Defense.notNull(id, "id can't be null"); |
652 |
|
|
653 |
9 |
if (!_responseStarted) |
654 |
2 |
beginResponse(); |
655 |
|
|
656 |
9 |
IMarkupWriter w = (IMarkupWriter)_writers.get(id); |
657 |
9 |
if (w != null) |
658 |
4 |
return w; |
659 |
|
|
660 |
|
|
661 |
|
|
662 |
|
|
663 |
|
|
664 |
|
|
665 |
5 |
IMarkupWriter nestedWriter = _writer.getNestedWriter(); |
666 |
5 |
nestedWriter.begin("response"); |
667 |
5 |
nestedWriter.attribute("id", id); |
668 |
5 |
if (type != null) |
669 |
5 |
nestedWriter.attribute("type", type); |
670 |
|
|
671 |
5 |
_writers.put(id, nestedWriter); |
672 |
|
|
673 |
5 |
return nestedWriter; |
674 |
|
} |
675 |
|
|
676 |
|
|
677 |
|
|
678 |
|
|
679 |
|
|
680 |
|
|
681 |
|
void beginResponse() |
682 |
|
{ |
683 |
5 |
_responseStarted = true; |
684 |
|
|
685 |
5 |
_writer.printRaw("<?xml version=\"1.0\" encoding=\"" + _cycle.getInfrastructure().getOutputEncoding() + "\"?>"); |
686 |
5 |
_writer.printRaw("<!DOCTYPE html " |
687 |
|
+ "PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" " |
688 |
|
+ "\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\" [\n" |
689 |
|
+ "<!ENTITY nbsp ' '>\n" |
690 |
|
+ "]>\n"); |
691 |
5 |
_writer.printRaw("<ajax-response>"); |
692 |
5 |
} |
693 |
|
|
694 |
|
|
695 |
|
|
696 |
|
|
697 |
|
|
698 |
|
void clearPartialWriters() |
699 |
|
{ |
700 |
1 |
_writers.clear(); |
701 |
1 |
} |
702 |
|
|
703 |
|
|
704 |
|
|
705 |
|
|
706 |
|
|
707 |
|
|
708 |
|
void endResponse() |
709 |
|
{ |
710 |
4 |
if (!_responseStarted) |
711 |
|
{ |
712 |
0 |
beginResponse(); |
713 |
|
} |
714 |
|
|
715 |
|
|
716 |
|
|
717 |
4 |
if (_statusMessages != null) |
718 |
0 |
writeStatusMessages(); |
719 |
|
|
720 |
4 |
Iterator keys = _writers.keySet().iterator(); |
721 |
4 |
String buffer = null; |
722 |
|
|
723 |
7 |
while (keys.hasNext()) { |
724 |
|
|
725 |
3 |
String key = (String)keys.next(); |
726 |
3 |
NestedMarkupWriter nw = (NestedMarkupWriter)_writers.get(key); |
727 |
|
|
728 |
3 |
buffer = nw.getBuffer(); |
729 |
|
|
730 |
3 |
if (_log.isDebugEnabled()) { |
731 |
|
|
732 |
0 |
_log.debug("Ajax markup buffer for key <" + key + " contains: " + buffer); |
733 |
|
} |
734 |
|
|
735 |
3 |
if (!isScriptWriter(key)) |
736 |
0 |
_writer.printRaw(ScriptUtils.ensureValidScriptTags(buffer)); |
737 |
|
else |
738 |
3 |
_writer.printRaw(buffer); |
739 |
3 |
} |
740 |
|
|
741 |
|
|
742 |
|
|
743 |
4 |
_writer.printRaw("</ajax-response>"); |
744 |
4 |
_writer.flush(); |
745 |
4 |
} |
746 |
|
|
747 |
|
|
748 |
|
|
749 |
|
|
750 |
|
|
751 |
|
|
752 |
|
|
753 |
|
|
754 |
|
|
755 |
|
|
756 |
|
boolean isScriptWriter(String key) |
757 |
|
{ |
758 |
3 |
if (key == null) |
759 |
0 |
return false; |
760 |
|
|
761 |
3 |
if (ResponseBuilder.BODY_SCRIPT.equals(key) |
762 |
|
|| ResponseBuilder.INCLUDE_SCRIPT.equals(key) |
763 |
|
|| ResponseBuilder.INITIALIZATION_SCRIPT.equals(key)) |
764 |
3 |
return true; |
765 |
|
|
766 |
0 |
return false; |
767 |
|
} |
768 |
|
|
769 |
|
|
770 |
|
|
771 |
|
|
772 |
|
|
773 |
|
|
774 |
|
|
775 |
|
|
776 |
|
void parseParameters(IRequestCycle cycle) |
777 |
|
{ |
778 |
1 |
Object[] updateParts = cycle.getParameters(ServiceConstants.UPDATE_PARTS); |
779 |
|
|
780 |
1 |
if (updateParts == null) |
781 |
0 |
return; |
782 |
|
|
783 |
2 |
for(int i = 0; i < updateParts.length; i++) |
784 |
1 |
_parts.add(updateParts[i].toString()); |
785 |
1 |
} |
786 |
|
|
787 |
|
|
788 |
|
|
789 |
|
|
790 |
|
|
791 |
|
|
792 |
|
|
793 |
|
|
794 |
|
public boolean contains(IComponent target) |
795 |
|
{ |
796 |
8 |
if (target == null) |
797 |
1 |
return false; |
798 |
|
|
799 |
7 |
String id = target.getClientId(); |
800 |
|
|
801 |
7 |
return contains(target, id); |
802 |
|
} |
803 |
|
|
804 |
|
boolean contains(IComponent target, String id) |
805 |
|
{ |
806 |
9 |
if (_parts.contains(id)) |
807 |
3 |
return true; |
808 |
|
|
809 |
6 |
Iterator it = _cycle.renderStackIterator(); |
810 |
7 |
while (it.hasNext()) { |
811 |
|
|
812 |
1 |
IComponent comp = (IComponent)it.next(); |
813 |
1 |
String compId = comp.getClientId(); |
814 |
|
|
815 |
1 |
if (comp != target && _parts.contains(compId)) |
816 |
0 |
return true; |
817 |
1 |
} |
818 |
|
|
819 |
6 |
return false; |
820 |
|
} |
821 |
|
|
822 |
|
|
823 |
|
|
824 |
|
|
825 |
|
public boolean explicitlyContains(IComponent target) |
826 |
|
{ |
827 |
0 |
if (target == null) |
828 |
0 |
return false; |
829 |
|
|
830 |
0 |
return _parts.contains(target.getId()); |
831 |
|
} |
832 |
|
} |