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.WRTProjectWorkspaceBridge;

@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,

                    WRTProjectWorkspaceBridge.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

	}

}