tablecontrol.java

esri的ArcGIS Server超级学习模板程序（for java）

package com.esri.solutions.jitk.web.faces.component;

import java.net.URL;

import javax.faces.component.UICommand;
import javax.faces.context.FacesContext;
import javax.faces.el.ValueBinding;

import com.esri.adf.web.data.WebContext;
import com.esri.adf.web.faces.component.MapControl;
import com.esri.solutions.jitk.web.data.results.TableModel;
import com.esri.solutions.jitk.web.faces.event.TableEvent;

/**
 * The {@link TableControl} provides the functionality to display results in a
 * in form of a table.
 * 
 */
public class TableControl extends UICommand {  
    /**
     * The standard component family for this component.
     */
    public static final String COMPONENT_FAMILY = "com.esri.jitk.web.Table";
    /**
     * The standard component type for this component.
     */
    public static final String COMPONENT_TYPE = "com.esri.jitk.web.Table";
    /**
     * The name of the XSL file used to render this control by default.
     */
    public static final String DEFAULT_XSL_FILE_NAME = "jitk-results-tabular.xsl";
            
    private boolean init = false;
    private boolean visible = true;
    private URL xslUrl;
    private String mapId;
    private int pageSize;
    
    public TableControl() {
        this.setRendererType(COMPONENT_TYPE);
        this.addActionListener(new TableControlActionListener());
      }
    
    /**
     * Set whether this control is to be initialized.
     * .
     * @param init if true, the control
     */
    public void setInit(boolean init) {
      this.init = init;
    }

    /**
     * Return an indicator whether this control is initialized.
     * 
     * @return true, if the control is initialized
     */
    public boolean isInit() {
      return this.init;
    }
    
    /**
     * Set the visibility of this control.
     * 
     * @param visible if true, this control will be visible
     */
    public void setVisible(boolean visible) {
        this.visible = visible;
    }

    /**
     * Return whether this controls is visible.
     * 
     * @return true if this control is visible
     */
    public boolean isVisible() {
        return this.visible;
    }
    
    /**
     * Sets the URL of the XSL file used to render the control.
     * @param xslUrl the URL of the XSL file
     */
    public void setXslUrl(URL xslUrl) {
      this.xslUrl = xslUrl;
    }

    /**
     * Return the URL of the XSL file used to render the control.
     * 
     * @return {@link URL} the URL object
     */
    public URL getXslUrl() {
      if (xslUrl != null)
        return xslUrl;
      ValueBinding vb = getValueBinding("xslUrl");
      if (vb != null)
        return (URL) vb.getValue(getFacesContext());
      else
        return (xslUrl);
    }   
    
    /**
     * Returns the map control id associated with the control.
     * @return {@link String} - the map control id
     */
    public String getMapId() {
      return this.mapId;
    }

    /**
     * Sets the control ID.  The map control id.
     * @param mapId the map control id
     */
    public void setMapId(String mapId) {
      this.mapId = mapId;
    }
    
    /**
     * Returns the page size associated with the control.
     * @return {@link int} - the number of records in each page
     */
    public int getPageSize() {
      return this.pageSize;
    }

    /**
     * Sets the page size.  The number of records in each page.
     * @param pageSize the page size
     */
    public void setPageSize(int pageSize) {
      this.pageSize = pageSize;
      getTableModel().setPageSize(pageSize);
    }
    
    /**
     * Return the {@link TableModel} object associated with this control.
     * 
     * <p/>
     * This is a convenience method for <code>(TableModel)getValue()</code>.
     * 
     * @return the {@link TableModel}
     */
    public TableModel getTableModel() {
        return (TableModel)getValue();
    }
    
    /**
     * Set the {@link TableModel} object associated with this control.
     * 
     * <p/>
     * This is a convenience method for <code>setValue(Object)</code>.
     * 
     * param tableModel the {@link TableModel}
     */
    public void setWebTable(TableModel tableModel) {
        setValue(tableModel);
    }
    
    /**
     * Set the value property of the {@link UICommand}. The value must be a
     * {@link TableModel}. 
     * 
     * @param value the new value
     * 
     * @throws java.lang.ClassCastException if the specified value is not a 
     * {@link TableModel}.
     */
    @Override
    public void setValue(Object value) {
        if (value != null && !(value instanceof TableModel)) {
            throw new ClassCastException(value.getClass().getName());
        }
        super.setValue(value);
    }
    
    /**
     * Returns the family of this control.
     * @return {@link String}- the {@link #COMPONENT_FAMILY}
     */
    @Override
    public String getFamily() {
      return COMPONENT_FAMILY;
    }    
    
    /**
     * Restore the state of the control.
     * 
     * @param facesContext the associated FacesContext
     * @param state the object to restore the state of the control from
     */
    @Override
    public void restoreState(FacesContext facesContext, Object state) {
        Object[] values = (Object[]) state;
        super.restoreState(facesContext, values[0]);
        init = ((Boolean) values[1]).booleanValue();
        visible = ((Boolean) values[2]).booleanValue();
        xslUrl = (URL) values[3];   
        mapId = (String) values[4];
    }

    /**
     * Save the state of this control.
     * 
     * @param facesContext the associated FacesContext
     * @return {@link Object} the object to be saved
     */
    @Override
    public Object saveState(FacesContext facesContext) {
        Object[] values = new Object[5];
        values[0] = super.saveState(facesContext);
        values[1] = init ? Boolean.TRUE : Boolean.FALSE;
        values[2] = (visible ? Boolean.TRUE : Boolean.FALSE);
        values[3] = xslUrl;
        values[4] = mapId;
        return values;
    }    
    
    public TableEvent queueTableEvent(FacesContext facesContext, String key, String action) {
        
    	MapControl mapControl = (mapId != null) ? (MapControl) findComponent(mapId) : null;
    	WebContext webContext = (mapControl != null) ? mapControl.getWebMap().getWebContext() : null;
    	
    	Object data = null;
    	
    	if (key != null && action != null) {
    		
    		if(action.equalsIgnoreCase("sort")) {
    			data = key.substring(getId().length() + 1);
    		
    		} else {
    			data = getTableModel().getRowData(Integer.parseInt(key.substring(getId().length() + 1)));
    		}
    	}
        
    	TableEvent event = new TableEvent(this, facesContext, webContext, data, action);
    	queueEvent(event);
        
        return event;
    }
}