BaseProject.java :  » IDE-Eclipse » pde » org » eclipse » pde » internal » core » natures » Java Open Source

/*******************************************************************************
 * Copyright (c) 2000, 2008 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.pde.internal.core.natures;

import org.eclipse.core.resources.*;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.PlatformObject;
import org.eclipse.pde.internal.core.PDECore;

/**
 */
public abstract class BaseProject extends PlatformObject implements IProjectNature {
  private IProject project;

  public BaseProject() {
    super();
  }

  protected void addToBuildSpec(String builderID) throws CoreException {

    IProjectDescription description = getProject().getDescription();
    ICommand builderCommand = getBuilderCommand(description, builderID);

    if (builderCommand == null) {
      // Add a new build spec
      ICommand command = description.newCommand();
      command.setBuilderName(builderID);
      setBuilderCommand(description, command);
    }
  }

  private ICommand getBuilderCommand(IProjectDescription description, String builderId) {
    ICommand[] commands = description.getBuildSpec();
    for (int i = 0; i < commands.length; ++i) {
      if (commands[i].getBuilderName().equals(builderId)) {
        return commands[i];
      }
    }
    return null;
  }

  public IProject getProject() {
    return project;
  }

  protected IWorkspace getWorkspace() {
    return PDECore.getWorkspace();
  }

  protected void removeFromBuildSpec(String builderID) throws CoreException {
    IProjectDescription description = getProject().getDescription();
    ICommand[] commands = description.getBuildSpec();
    for (int i = 0; i < commands.length; ++i) {
      if (commands[i].getBuilderName().equals(builderID)) {
        ICommand[] newCommands = new ICommand[commands.length - 1];
        System.arraycopy(commands, 0, newCommands, 0, i);
        System.arraycopy(commands, i + 1, newCommands, i, commands.length - i - 1);
        description.setBuildSpec(newCommands);
        return;
      }
    }
  }

  private void setBuilderCommand(IProjectDescription description, ICommand newCommand) throws CoreException {

    ICommand[] oldCommands = description.getBuildSpec();
    ICommand oldBuilderCommand = getBuilderCommand(description, newCommand.getBuilderName());

    ICommand[] newCommands;

    if (oldBuilderCommand == null) {
      // Add a build spec after other builders
      newCommands = new ICommand[oldCommands.length + 1];
      System.arraycopy(oldCommands, 0, newCommands, 0, oldCommands.length);
      newCommands[oldCommands.length] = newCommand;
    } else {
      for (int i = 0, max = oldCommands.length; i < max; i++) {
        if (oldCommands[i] == oldBuilderCommand) {
          oldCommands[i] = newCommand;
          break;
        }
      }
      newCommands = oldCommands;
    }

    // Commit the spec change into the project
    description.setBuildSpec(newCommands);
    getProject().setDescription(description, null);
  }

  public void setProject(IProject project) {
    this.project = project;
  }
}