package CSU670_Plugin.actions;

import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowActionDelegate;
import org.eclipse.jface.dialogs.MessageDialog;

import CSU670_Plugin.editors.AspectXEditor;
import CSU670_Plugin.gen.Main;

/**
 * Our sample action implements workbench action delegate.
 * The action proxy will be created by the workbench and
 * shown in the UI. When the user tries to use the action,
 * this delegate will be created and execution will be 
 * delegated to it.
 * @see IWorkbenchWindowActionDelegate
 */
public class AspectXSyntaxChecker implements IWorkbenchWindowActionDelegate {
	private IWorkbenchWindow window;
	/**
	 * The constructor.
	 */
	public AspectXSyntaxChecker() {
	}

	/**
	 * The action has been activated. The argument of the
	 * method represents the 'real' action sitting
	 * in the workbench UI.
	 * @see IWorkbenchWindowActionDelegate#run
	 */
	public void run(IAction action) {
		String msg="";
		
		do { // so we can "break" out
			if(AspectXEditor.editorCount!=1){
				msg += "Error! Must have exactly one (1) xaj editor\n";
				break;
			}
			if(AspectXEditor.current==null){
				msg += "Error! Only start one editor xaj per session\n";
				break;
			}
			
			Main.check(AspectXEditor.current.getText());
			
			msg+=Main.log;
		
		} while (false);
		
		MessageDialog.openInformation(
			window.getShell(),
			"AspectX Syntax Check",
			msg);
	}

	/**
	 * Selection in the workbench has been changed. We 
	 * can change the state of the 'real' action here
	 * if we want, but this can only happen after 
	 * the delegate has been created.
	 * @see IWorkbenchWindowActionDelegate#selectionChanged
	 */
	public void selectionChanged(IAction action, ISelection selection) {
	}

	/**
	 * We can use this method to dispose of any system
	 * resources we previously allocated.
	 * @see IWorkbenchWindowActionDelegate#dispose
	 */
	public void dispose() {
	}

	/**
	 * We will cache window object in order to
	 * be able to provide parent shell for the message dialog.
	 * @see IWorkbenchWindowActionDelegate#init
	 */
	public void init(IWorkbenchWindow window) {
		this.window = window;
	}
}