package net.sourceforge.phpdt.internal.debug.ui;

import net.sourceforge.phpdt.internal.launching.PHPLaunchConfigurationAttribute;
import net.sourceforge.phpeclipse.PHPeclipsePlugin;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Path;
import org.eclipse.debug.core.ILaunchConfiguration;
import org.eclipse.debug.core.model.IPersistableSourceLocator;
import org.eclipse.debug.core.model.IStackFrame;
import org.eclipse.debug.ui.ISourcePresentation;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.part.FileEditorInput;

public class PHPSourceLocator implements IPersistableSourceLocator, ISourcePresentation {
  private String absoluteWorkingDirectory;

  public PHPSourceLocator() {

  }

  public String getAbsoluteWorkingDirectory() {
    return absoluteWorkingDirectory;
  }
  /**
   * @see org.eclipse.debug.core.model.IPersistableSourceLocator#getMemento()
   */
  public String getMemento() throws CoreException {
    return null;
  }

  /**
   * @see org.eclipse.debug.core.model.IPersistableSourceLocator#initializeFromMemento(String)
   */
  public void initializeFromMemento(String memento) throws CoreException {
  }

  /**
   * @see org.eclipse.debug.core.model.IPersistableSourceLocator#initializeDefaults(ILaunchConfiguration)
   */
  public void initializeDefaults(ILaunchConfiguration configuration) throws CoreException {
    this.absoluteWorkingDirectory = configuration.getAttribute(PHPLaunchConfigurationAttribute.WORKING_DIRECTORY, "");
  }

  /**
   * @see org.eclipse.debug.core.model.ISourceLocator#getSourceElement(IStackFrame)
   */
  public Object getSourceElement(IStackFrame stackFrame) {
    return null;
    //return ((PHPStackFrame) stackFrame).getFileName();
  }

  /**
   * @see org.eclipse.debug.ui.ISourcePresentation#getEditorId(IEditorInput, Object)
   */
  public String getEditorId(IEditorInput input, Object element) {
    return PlatformUI.getWorkbench().getEditorRegistry().getDefaultEditor((String) element).getId();
  }

  /**
   * @see org.eclipse.debug.ui.ISourcePresentation#getEditorInput(Object)
   */
  public IEditorInput getEditorInput(Object element) {

    String filename = (String) element;
    IFile eclipseFile = PHPeclipsePlugin.getWorkspace().getRoot().getFileForLocation(new Path(filename));
    if (eclipseFile == null) {
      filename = this.getAbsoluteWorkingDirectory() + "/" + filename;
      eclipseFile = PHPeclipsePlugin.getWorkspace().getRoot().getFileForLocation(new Path(filename));
      if (eclipseFile == null) {
        PHPeclipsePlugin.log(IStatus.INFO, "Could not find file \"" + element + "\".");
        return null;
      }
    }
    return new FileEditorInput(eclipseFile);

  }

}