Package org.apache.myfaces.tobago.renderkit

Source Code of org.apache.myfaces.tobago.renderkit.PageRendererBase

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/

package org.apache.myfaces.tobago.renderkit;

import org.apache.commons.lang.StringUtils;
import org.apache.myfaces.tobago.context.ClientProperties;
import org.apache.myfaces.tobago.internal.component.AbstractUIPage;
import org.apache.myfaces.tobago.layout.Box;
import org.apache.myfaces.tobago.layout.Measure;
import org.apache.myfaces.tobago.model.PageState;
import org.apache.myfaces.tobago.util.ComponentUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import java.util.StringTokenizer;

public class PageRendererBase extends LayoutComponentRendererBase {

  private static final Logger LOG = LoggerFactory.getLogger(PageRendererBase.class);

  public void decode(FacesContext facesContext, UIComponent component) {
    if (component instanceof AbstractUIPage) {
      AbstractUIPage page = (AbstractUIPage) component;

      decodeActionPosition(facesContext, page);
      decodePageState(facesContext, page);
    }
  }

  private void decodeActionPosition(FacesContext facesContext, AbstractUIPage page) {
    String actionIdName = page.getClientId(facesContext) + ComponentUtils.SUB_SEPARATOR + "form-action";
    String newActionId = (String) facesContext.getExternalContext().getRequestParameterMap().get(actionIdName);
    if (LOG.isDebugEnabled()) {
      LOG.debug("action = " + newActionId);
    }
    page.setActionId(newActionId);

    try {
      String actionPositionName = page.getClientId(facesContext) + ComponentUtils.SUB_SEPARATOR + "action-position";
      String actionPositionString = (String)
          facesContext.getExternalContext().getRequestParameterMap().get(actionPositionName);
      if (LOG.isDebugEnabled()) {
        LOG.debug("actionPosition='" + actionPositionString + "'");
      }
      if (StringUtils.isNotEmpty(actionPositionString)) {
        Box actionPosition = new Box(actionPositionString);
        page.setActionPosition(actionPosition);
      } else {
        page.setActionPosition(null);
      }
    } catch (Exception e) {
      LOG.warn("Can't analyse parameter for action-position", e);
    }
  }

  @SuppressWarnings("unchecked")
  private void decodePageState(FacesContext facesContext, AbstractUIPage page) {
    String name;
    String value = null;
    try {
      name = page.getClientId(facesContext) + ComponentUtils.SUB_SEPARATOR + "form-clientDimension";
      value = (String) facesContext.getExternalContext().getRequestParameterMap().get(name);
      if (value != null) {
        StringTokenizer tokenizer = new StringTokenizer(value, ";");
        final Measure width = Measure.valueOf(tokenizer.nextToken());
        final Measure height = Measure.valueOf(tokenizer.nextToken());
        // XXX remove me later
        PageState pageState = page.getPageState(facesContext);
        if (pageState != null) {
          pageState.setClientWidth(width.getPixel());
          pageState.setClientHeight(height.getPixel());
        }
        final ClientProperties clientProperties = ClientProperties.getInstance(facesContext);
        clientProperties.setPageWidth(width);
        clientProperties.setPageHeight(height);
      }
    } catch (Exception e) {
      LOG.error("Error in decoding state: value='" + value + "'", e);
    }
  }
}
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