source: rtems-eclipse-plug-in/org.rtems.cdt.toolchain/src/org/rtems/cdt/toolchain/RtemsBspDefinedSymbolsValueHandler.java @ 52a6839

package org.rtems.cdt.toolchain;

import java.util.Iterator;
import java.util.List;
import java.util.ArrayList;

import org.eclipse.cdt.managedbuilder.core.IBuildObject;
import org.eclipse.cdt.managedbuilder.core.IHoldsOptions;
import org.eclipse.cdt.managedbuilder.core.IManagedOptionValueHandler;
import org.eclipse.cdt.managedbuilder.core.IOption;
import org.eclipse.cdt.managedbuilder.core.ManagedOptionValueHandler;

public class RtemsBspDefinedSymbolsValueHandler extends ManagedOptionValueHandler 
                                             implements IManagedOptionValueHandler {
  private List<String> bspDefinedSymbolList;    

  public RtemsBspDefinedSymbolsValueHandler() {
    bspDefinedSymbolList = RtemsScannerInfoCollector.getBspDefinedSymbols();
  }

  /**
   * Handles transfer between values between UI element and
   * back-end in different circumstances.
   *
   * @param configuration  build configuration of option
   *                       (may be IConfiguration or IResourceConfiguration)
   * @param holder         contains the holder of the option
   * @param option         the option that is handled
   * @param extraArgument  extra argument for handler
   * @param event          event to be handled, one of the following:
   *                       (EVENT_OPEN = 1, EVENT_CLOSE = 2,
   *                        EVENT_SETDEFAULT = 3,
   *                        EVENT_APPLY = 4, EVENT_LOAD = 5)
   *
   * @return  True when the event was handled, false otherwise.
   * This enables default event handling can take place.
   */
  public boolean handleValue(IBuildObject configuration, IHoldsOptions holder,
      IOption option, String extraArgument, int event) {
    if (event == EVENT_CLOSE) return false;
    
    try {
      Object defaultValue = option.getDefaultValue();
      
      if (   defaultValue==null 
          || (   defaultValue instanceof List 
              && ((List)defaultValue).size()<=0
             ) 
         ) {     
        option.setDefaultValue(bspDefinedSymbolList);
      }      
    } catch (Exception e) {
      return false;
    }

    return true;
  }
}