LuaBreakpointTargetAdapter.java

/**
 * 
 */
package org.keplerproject.ldt.debug.ui.breakpoints;

import org.eclipse.core.resources.IFile;
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.IToggleBreakpointsTargetExtension;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.texteditor.ITextEditor;
import org.keplerproject.ldt.debug.core.LuaDebuggerPlugin;
import org.keplerproject.ldt.debug.core.breakpoints.LuaLineBreakpoint;

/**
 * @author jasonsantos
 */
public class LuaBreakpointTargetAdapter implements
		IToggleBreakpointsTargetExtension {

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.ui.actions.IToggleBreakpointsTargetExtension#canToggleBreakpoints(org.eclipse.ui.IWorkbenchPart,
	 *      org.eclipse.jface.viewers.ISelection)
	 */
	public boolean canToggleBreakpoints(IWorkbenchPart part,
			ISelection selection) {
		return canToggleLineBreakpoints(part, selection);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.ui.actions.IToggleBreakpointsTargetExtension#toggleBreakpoints(org.eclipse.ui.IWorkbenchPart,
	 *      org.eclipse.jface.viewers.ISelection)
	 */
	public void toggleBreakpoints(IWorkbenchPart part, ISelection selection)
			throws CoreException {
		toggleLineBreakpoints(part, selection);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.ui.actions.IToggleBreakpointsTarget#canToggleLineBreakpoints(org.eclipse.ui.IWorkbenchPart,
	 *      org.eclipse.jface.viewers.ISelection)
	 */

	public boolean canToggleLineBreakpoints(IWorkbenchPart part,
			ISelection selection) {
		return getEditor(part) != null;
	}

	/**
	 * Returns the editor being used to edit a Lua script, associated with the
	 * given part, or <code>null</code> if none.
	 * 
	 * @param part
	 *            workbench part
	 * @return the editor being used to edit a Lua script, associated with the
	 *         given part, or <code>null</code> if none
	 */
	private ITextEditor getEditor(IWorkbenchPart part) {
		if (part instanceof ITextEditor) {
			ITextEditor editorPart = (ITextEditor) part;
			IResource resource = (IResource) editorPart.getEditorInput()
					.getAdapter(IResource.class);
			if (resource != null) {
				String extension = resource.getFileExtension();
				// TODO add other extensions
				if (extension != null && extension.equals("lua")) {
					return editorPart;
				}
			}
		}
		return null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.ui.actions.IToggleBreakpointsTarget#canToggleMethodBreakpoints(org.eclipse.ui.IWorkbenchPart,
	 *      org.eclipse.jface.viewers.ISelection)
	 */

	public boolean canToggleMethodBreakpoints(IWorkbenchPart part,
			ISelection selection) {
		return false;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.ui.actions.IToggleBreakpointsTarget#canToggleWatchpoints(org.eclipse.ui.IWorkbenchPart,
	 *      org.eclipse.jface.viewers.ISelection)
	 */

	public boolean canToggleWatchpoints(IWorkbenchPart part,
			ISelection selection) {
		// TODO find out what the hell are watchpoints
		return false;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.ui.actions.IToggleBreakpointsTarget#toggleLineBreakpoints(org.eclipse.ui.IWorkbenchPart,
	 *      org.eclipse.jface.viewers.ISelection)
	 */

	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(
							LuaDebuggerPlugin.ID_LUA_DEBUG_MODEL);
			for (int i = 0; i < breakpoints.length; i++) {
				IBreakpoint breakpoint = breakpoints[i];
				if (breakpoint instanceof ILineBreakpoint
						&& resource
								.equals(breakpoint.getMarker().getResource())) {
					if (((ILineBreakpoint) breakpoint).getLineNumber() == (lineNumber + 1)) {
						// remove
						breakpoint.delete();
						return;
					}
				}
			}

			// create line breakpoint (doc line numbers start at 0)
			LuaLineBreakpoint lineBreakpoint = new LuaLineBreakpoint(
					(IFile) resource, lineNumber + 1);
			DebugPlugin.getDefault().getBreakpointManager().addBreakpoint(
					lineBreakpoint);
		}

	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.ui.actions.IToggleBreakpointsTarget#toggleMethodBreakpoints(org.eclipse.ui.IWorkbenchPart,
	 *      org.eclipse.jface.viewers.ISelection)
	 */

	public void toggleMethodBreakpoints(IWorkbenchPart part,
			ISelection selection) throws CoreException {
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.ui.actions.IToggleBreakpointsTarget#toggleWatchpoints(org.eclipse.ui.IWorkbenchPart,
	 *      org.eclipse.jface.viewers.ISelection)
	 */

	public void toggleWatchpoints(IWorkbenchPart part, ISelection selection)
			throws CoreException {
	}

}