/*******************************************************************************

 * Copyright (c) 2010 Symbian Foundation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the License "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Symbian Foundation - initial contribution.

 * Contributors:

 * Description:

 * Overview:

 * Details:

 * Platforms/Drives/Compatibility:

 * Assumptions/Requirement/Pre-requisites:

 * Failures and causes:

 *******************************************************************************/

package org.symbian.tools.tmw.debug.internal;

import org.chromium.debug.core.model.ChromiumLineBreakpoint;

import org.eclipse.core.resources.IResource;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.core.runtime.IStatus;

import org.eclipse.core.runtime.Status;

import org.eclipse.debug.core.DebugPlugin;

import org.eclipse.jface.text.BadLocationException;

import org.eclipse.jface.text.IDocument;

import org.eclipse.jface.text.ITypedRegion;

import org.eclipse.ui.IEditorInput;

import org.eclipse.wst.html.core.text.IHTMLPartitions;

import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;

import org.eclipse.wst.sse.ui.internal.provisional.extensions.ISourceEditingTextTools;

import org.eclipse.wst.sse.ui.internal.provisional.extensions.breakpoint.IBreakpointProvider;

import org.symbian.tools.tmw.debug.internal.launch.ChromeToolsWorkspaceBridge;

@SuppressWarnings("restriction")

public class HtmlBreakpointProvider implements IBreakpointProvider {

    public IStatus addBreakpoint(IDocument document, IEditorInput input, int lineNumber, int offset)

            throws CoreException {

        boolean hasScript = hasJavaScript(document, lineNumber);

        if (hasScript) {

            ChromiumLineBreakpoint breakpoint = new ChromiumLineBreakpoint(getResource(input), lineNumber,

                    ChromeToolsWorkspaceBridge.DEBUG_MODEL_ID);

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

        }

        return Status.OK_STATUS;

    }

    private boolean hasJavaScript(IDocument document, int lineNumber) {

        try {

            if (document instanceof IStructuredDocument) {

                IStructuredDocument doc = (IStructuredDocument) document;

                int lineOffset = doc.getLineOffset(lineNumber - 1);

                int lineLength = doc.getLineLength(lineNumber - 1);

                ITypedRegion[] computePartitioning = doc.computePartitioning(lineOffset, lineLength);

                for (ITypedRegion region : computePartitioning) {

                    if (IHTMLPartitions.SCRIPT.equals(region.getType())

                            || IHTMLPartitions.SCRIPT_EVENTHANDLER.equals(region.getType())) {

                        return true;

                    }

                }

            }

        } catch (BadLocationException e) {

            Activator.log(e);

        }

        return false;

    }

    public IResource getResource(IEditorInput input) {

        return (IResource) input.getAdapter(IResource.class);

    }

    public void setSourceEditingTextTools(ISourceEditingTextTools tools) {

        // Do nothing

    }

}