// Copyright (c) 2009 The Chromium Authors. All rights reserved.

// Use of this source code is governed by a BSD-style license that can be

// found in the LICENSE file.

package org.chromium.debug.core.model;

import org.chromium.debug.core.util.ChromiumDebugPluginUtil;

import org.eclipse.core.resources.IResource;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.debug.core.DebugPlugin;

import org.eclipse.debug.core.model.IBreakpoint;

import org.eclipse.debug.core.model.ILineBreakpoint;

import org.eclipse.debug.ui.actions.IToggleBreakpointsTarget;

import org.eclipse.jface.text.ITextSelection;

import org.eclipse.jface.viewers.ISelection;

import org.eclipse.ui.IWorkbenchPart;

import org.eclipse.ui.texteditor.ITextEditor;

/**

 * Adapter to create breakpoints in JS files.

 */

public abstract class LineBreakpointAdapter implements IToggleBreakpointsTarget {

  public static class ForVirtualProject extends LineBreakpointAdapter {

    @Override

    protected ITextEditor getEditor(IWorkbenchPart part) {

      if (part instanceof ITextEditor) {

        ITextEditor editorPart = (ITextEditor) part;

        IResource resource = (IResource) editorPart.getEditorInput().getAdapter(IResource.class);

        if (resource != null &&

            ChromiumDebugPluginUtil.CHROMIUM_EXTENSION.equals(resource.getFileExtension())) {

          return editorPart;

        }

      }

      return null;

    }

    @Override

    protected String getDebugModelId() {

      return VProjectWorkspaceBridge.DEBUG_MODEL_ID;

    }

  }

  public void toggleLineBreakpoints(IWorkbenchPart part, ISelection selection)

      throws CoreException {

    ITextEditor textEditor = getEditor(part);

    if (textEditor != null) {

      IResource resource = (IResource) textEditor.getEditorInput().getAdapter(IResource.class);

      ITextSelection textSelection = (ITextSelection) selection;

      int lineNumber = textSelection.getStartLine();

      IBreakpoint[] breakpoints = DebugPlugin.getDefault().getBreakpointManager().getBreakpoints(

          getDebugModelId());

      for (int i = 0; i < breakpoints.length; i++) {

        IBreakpoint breakpoint = breakpoints[i];

        if (resource.equals(breakpoint.getMarker().getResource())) {

          if (((ILineBreakpoint) breakpoint).getLineNumber() == lineNumber + 1) {

            // remove

            breakpoint.delete();

            return;

          }

        }

      }

      // Line numbers start with 0 in V8, with 1 in Eclipse.

      ChromiumLineBreakpoint lineBreakpoint = new ChromiumLineBreakpoint(resource, lineNumber + 1);

      DebugPlugin.getDefault().getBreakpointManager().addBreakpoint(lineBreakpoint);

    }

  }

  public boolean canToggleLineBreakpoints(IWorkbenchPart part, ISelection selection) {

    return getEditor(part) != null;

  }

  /**

   * Returns the editor being used to edit a PDA file, associated with the given

   * part, or <code>null</code> if none.

   * @param part workbench part

   * @return the editor being used to edit a PDA file, associated with the given

   *         part, or <code>null</code> if none

   */

  protected abstract ITextEditor getEditor(IWorkbenchPart part);

  protected abstract String getDebugModelId();

  public void toggleMethodBreakpoints(IWorkbenchPart part, ISelection selection)

      throws CoreException {

    // TODO(apavlov): Implement method breakpoints if feasible.

  }

  public boolean canToggleMethodBreakpoints(IWorkbenchPart part, ISelection selection) {

    // TODO(apavlov): Implement method breakpoints if feasible.

    return true;

  }

  public void toggleWatchpoints(IWorkbenchPart part, ISelection selection)

      throws CoreException {

    // TODO(apavlov): Implement watchpoints if feasible.

  }

  public boolean canToggleWatchpoints(IWorkbenchPart part, ISelection selection) {

    // TODO(apavlov): Implement watchpoints if feasible.

    return false;

  }

}