Examples of org.apache.wicket.markup.head.IHeaderResponse

org.apache.wicket.markup.head.IHeaderResponse
Interface that is used to render header elements (usually javascript and CSS references). Implementation of this interface is responsible for filtering duplicate contributions (so that for example the same javascript is not loaded twice) during the same request. @author Matej Knopp

      if (log.isDebugEnabled())
      {
        log.debug("renderHead: {}", toString(false));
      }


      IHeaderResponse response = container.getHeaderResponse();


      // Allow component to contribute
      if (response.wasRendered(this) == false)
      {
        StringResponse markupHeaderResponse = new StringResponse();
        Response oldResponse = getResponse();
        RequestCycle.get().setResponse(markupHeaderResponse);
        try
        {
          // Make sure the markup source strategy contributes to the header first
          // to be backward compatible. WICKET-3761
          getMarkupSourcingStrategy().renderHead(this, container);
          CharSequence headerContribution = markupHeaderResponse.getBuffer();
          if (Strings.isEmpty(headerContribution) == false)
          {
            response.render(StringHeaderItem.forString(headerContribution));
          }
        }
        finally
        {
          RequestCycle.get().setResponse(oldResponse);
        }
        // Then let the component itself to contribute to the header
        renderHead(this, response);


        response.markRendered(this);
      }


      // Than ask all behaviors
      for (Behavior behavior : getBehaviors())
      {
        if (isBehaviorAccepted(behavior))
        {
          if (response.wasRendered(behavior) == false)
          {
            behavior.renderHead(this, response);
            List<IClusterable> pair = Arrays.asList(this, behavior);
            response.markRendered(pair);
          }
        }
      }
    }
  }

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      if (log.isDebugEnabled())
      {
        log.debug("renderHead: {}", toString(false));
      }


      IHeaderResponse response = container.getHeaderResponse();


      // Allow component to contribute
      if (response.wasRendered(this) == false)
      {
        StringResponse markupHeaderResponse = new StringResponse();
        Response oldResponse = getResponse();
        RequestCycle.get().setResponse(markupHeaderResponse);
        try
        {
          // Make sure the markup source strategy contributes to the header first
          // to be backward compatible. WICKET-3761
          getMarkupSourcingStrategy().renderHead(this, container);
          CharSequence headerContribution = markupHeaderResponse.getBuffer();
          if (Strings.isEmpty(headerContribution) == false)
          {
            response.render(StringHeaderItem.forString(headerContribution));
          }
        }
        finally
        {
          RequestCycle.get().setResponse(oldResponse);
        }
        // Then let the component itself to contribute to the header
        renderHead(this, response);


        response.markRendered(this);
      }


      // Then ask all behaviors
      for (Behavior behavior : getBehaviors())
      {
        if (isBehaviorAccepted(behavior))
        {
          if (response.wasRendered(behavior) == false)
          {
            behavior.renderHead(this, response);
            List<IClusterable> pair = Arrays.asList(this, behavior);
            response.markRendered(pair);
          }
        }
      }
    }
  }

View Full Code Here

      if (log.isDebugEnabled())
      {
        log.debug("renderHead: {}", toString(false));
      }


      IHeaderResponse response = container.getHeaderResponse();


      // Allow component to contribute
      if (response.wasRendered(this) == false)
      {
        StringResponse markupHeaderResponse = new StringResponse();
        Response oldResponse = getResponse();
        RequestCycle.get().setResponse(markupHeaderResponse);
        try
        {
          // Make sure the markup source strategy contributes to the header first
          // to be backward compatible. WICKET-3761
          getMarkupSourcingStrategy().renderHead(this, container);
          CharSequence headerContribution = markupHeaderResponse.getBuffer();
          if (Strings.isEmpty(headerContribution) == false)
          {
            response.render(StringHeaderItem.forString(headerContribution));
          }
        }
        finally
        {
          RequestCycle.get().setResponse(oldResponse);
        }
        // Then let the component itself to contribute to the header
        renderHead(this, response);


        response.markRendered(this);
      }


      // Than ask all behaviors
      for (Behavior behavior : getBehaviors())
      {
        if (isBehaviorAccepted(behavior))
        {
          if (response.wasRendered(behavior) == false)
          {
            behavior.renderHead(this, response);
            List<IClusterable> pair = Arrays.asList(this, behavior);
            response.markRendered(pair);
          }
        }
      }
    }
  }

View Full Code Here

      if (log.isDebugEnabled())
      {
        log.debug("internalRenderHead: {}", toString(false));
      }


      IHeaderResponse response = container.getHeaderResponse();


      // Allow component to contribute
      if (response.wasRendered(this) == false)
      {
        StringResponse markupHeaderResponse = new StringResponse();
        Response oldResponse = getResponse();
        RequestCycle.get().setResponse(markupHeaderResponse);
        try
        {
          // Make sure the markup source strategy contributes to the header first
          // to be backward compatible. WICKET-3761
          getMarkupSourcingStrategy().renderHead(this, container);
          CharSequence headerContribution = markupHeaderResponse.getBuffer();
          if (Strings.isEmpty(headerContribution) == false)
          {
            response.render(StringHeaderItem.forString(headerContribution));
          }
        }
        finally
        {
          RequestCycle.get().setResponse(oldResponse);
        }
        // Then let the component itself to contribute to the header
        renderHead(this, response);


        response.markRendered(this);
      }


      // Then ask all behaviors
      for (Behavior behavior : getBehaviors())
      {
        if (isBehaviorAccepted(behavior))
        {
          if (response.wasRendered(behavior) == false)
          {
            behavior.renderHead(this, response);
            List<IClusterable> pair = Arrays.asList(this, behavior);
            response.markRendered(pair);
          }
        }
      }
    }
  }

View Full Code Here

   *            the response Wicket created
   * @return the response Wicket should use in IHeaderContributor traversal
   */
  public final IHeaderResponse decorateHeaderResponse(final IHeaderResponse response)
  {
    final IHeaderResponse aggregatingResponse = new ResourceAggregator(response);


    if (headerResponseDecorator == null)
    {
      return aggregatingResponse;
    }

View Full Code Here


    if (Application.exists())
    {
      HeaderContributorListenerCollection headerContributorListenerCollection =
          Application.get().getHeaderContributorListeners();
      IHeaderResponse headerResponse = headerContainer.getHeaderResponse();


      for (IHeaderContributor listener : headerContributorListenerCollection)
      {
        listener.renderHead(headerResponse);
      }

View Full Code Here

      if (log.isDebugEnabled())
      {
        log.debug("renderHead: {}", toString(false));
      }


      IHeaderResponse response = container.getHeaderResponse();


      // Allow component to contribute
      if (response.wasRendered(this) == false)
      {
        StringResponse markupHeaderResponse = new StringResponse();
        Response oldResponse = getResponse();
        RequestCycle.get().setResponse(markupHeaderResponse);
        try
        {
          // Make sure the markup source strategy contributes to the header first
          // to be backward compatible. WICKET-3761
          getMarkupSourcingStrategy().renderHead(this, container);
          CharSequence headerContribution = markupHeaderResponse.getBuffer();
          if (Strings.isEmpty(headerContribution) == false)
          {
            response.render(StringHeaderItem.forString(headerContribution));
          }
        }
        finally
        {
          RequestCycle.get().setResponse(oldResponse);
        }
        // Then let the component itself to contribute to the header
        renderHead(this, response);


        response.markRendered(this);
      }


      // Than ask all behaviors
      for (Behavior behavior : getBehaviors())
      {
        if (isBehaviorAccepted(behavior))
        {
          if (response.wasRendered(behavior) == false)
          {
            behavior.renderHead(this, response);
            response.markRendered(behavior);
          }
        }
      }
    }
  }

View Full Code Here

    {
      return "";
    }
    List<HeaderItem> resp = responseFilterMap.get(filterName);
    final StringResponse strResponse = new StringResponse();
    IHeaderResponse headerRenderer = new HeaderResponse()
    {
      @Override
      protected Response getRealResponse()
      {
        return strResponse;
      }
    };


    if (Application.get().getResourceSettings().getUseDefaultResourceAggregator())
      headerRenderer = new ResourceAggregator(headerRenderer);


    for (HeaderItem curItem : resp)
    {
      headerRenderer.render(curItem);
    }
    headerRenderer.close();
    return strResponse.getBuffer();
  }

View Full Code Here

    {
      // Create a (string) response for all headers contributed by any component on the Page.
      final StringResponse response = new StringResponse();
      getRequestCycle().setResponse(response);


      IHeaderResponse headerResponse = getHeaderResponse();
      if (!response.equals(headerResponse.getResponse()))
      {
        getRequestCycle().setResponse(headerResponse.getResponse());
      }


      // Render the header sections of all components on the page
      AbstractHeaderRenderStrategy.get().renderHeader(this,
        new HeaderStreamState(markupStream, openTag), getPage());


      // Close the header response before rendering the header container itself
      // See https://issues.apache.org/jira/browse/WICKET-3728
      headerResponse.close();


      // Cleanup extraneous CR and LF from the response
      CharSequence output = getCleanResponse(response);


      // Automatically add <head> if necessary

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   *            the response Wicket created
   * @return the response Wicket should use in IHeaderContributor traversal
   */
  public final IHeaderResponse decorateHeaderResponse(final IHeaderResponse response)
  {
    final IHeaderResponse aggregatingResponse = new ResourceAggregator(response);


    if (headerResponseDecorator == null)
    {
      return aggregatingResponse;
    }

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