BreakpointSetConditionAction.java example

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pdt-master
/*******************************************************************************
 * Copyright (c) 2009 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     Zend Technologies
 *******************************************************************************/
package org.eclipse.php.internal.debug.ui.actions;

import java.util.Iterator;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.debug.core.model.IBreakpoint;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.IInputValidator;
import org.eclipse.jface.dialogs.InputDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.window.Window;
import org.eclipse.php.internal.debug.core.model.PHPConditionalBreakpoint;
import org.eclipse.php.internal.debug.ui.Logger;
import org.eclipse.php.internal.debug.ui.PHPDebugUIMessages;
import org.eclipse.php.internal.debug.ui.PHPDebugUIPlugin;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IActionDelegate;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;

import com.ibm.icu.text.MessageFormat;

public class BreakpointSetConditionAction implements IObjectActionDelegate {

	IWorkbenchPart fPart = null;

	/**
	 * A dialog that sets the focus to the text area.
	 */
	class SetConditionDialog extends InputDialog {

		private boolean fSetConditionEnabled;

		protected SetConditionDialog(Shell parentShell, String dialogTitle, String dialogMessage, String initialValue,
				boolean enableCondition, IInputValidator validator) {
			super(parentShell, dialogTitle, dialogMessage, initialValue, validator);
			fSetConditionEnabled = enableCondition;
		}

		/**
		 * @see Dialog#createDialogArea(Composite)
		 */
		protected Control createDialogArea(Composite parent) {
			Composite area = (Composite) super.createDialogArea(parent);

			final Button checkbox = new Button(area, SWT.CHECK);
			GridData data = new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL);
			data.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH);
			checkbox.setLayoutData(data);
			checkbox.setFont(parent.getFont());
			checkbox.setText(MessageFormat.format(PHPDebugUIMessages.EnableSetCondition_1, new Object[] {}));
			checkbox.setSelection(fSetConditionEnabled);
			getText().setEnabled(fSetConditionEnabled);

			checkbox.addSelectionListener(new SelectionListener() {
				public void widgetSelected(SelectionEvent e) {
					fSetConditionEnabled = checkbox.getSelection();
					getText().setEnabled(fSetConditionEnabled);
					getOkButton().setEnabled(true);
				}

				public void widgetDefaultSelected(SelectionEvent e) {

				}

			});

			getText().addKeyListener(new org.eclipse.swt.events.KeyListener() {

				public void keyPressed(KeyEvent e) {
					getOkButton().setEnabled(true);

				}

				public void keyReleased(KeyEvent e) {
					getOkButton().setEnabled(true);

				}

			});

			return area;
		}

		protected boolean isSetConditionEnabled() {
			return fSetConditionEnabled;
		}

	}

	/**
	 * @see IActionDelegate#run(IAction)
	 */
	public void run(IAction action) {
		IStructuredSelection selection = getCurrentSelection();
		if (selection == null) {
			return;
		}
		Iterator itr = selection.iterator();
		if (!itr.hasNext()) {
			return;
		}

		while (itr.hasNext()) {
			IBreakpoint breakpoint = (IBreakpoint) itr.next();
			if (breakpoint instanceof PHPConditionalBreakpoint) {
				try {
					ConditionDialog((PHPConditionalBreakpoint) breakpoint);
				} catch (CoreException ce) {
					// ConditionDialog doesn't throw CoreException. Just Log
					Logger.logException("PHP: Exception setting condition in breakpoint", //$NON-NLS-1$
							ce);
				}
			}
		}
	}

	protected boolean ConditionDialog(PHPConditionalBreakpoint breakpoint) throws CoreException {
		IInputValidator validator = new IInputValidator() {
			public String isValid(String value) {
				return value;
			}
		};

		String currentCondition = breakpoint.getCondition();
		boolean enableCondition = breakpoint.isConditionEnabled();
		if (currentCondition.equals("")) //$NON-NLS-1$
			enableCondition = true;

		Shell activeShell = PHPDebugUIPlugin.getActiveWorkbenchShell();
		String title = MessageFormat.format(PHPDebugUIMessages.SetCondition_1, new Object[] {});
		String message = MessageFormat.format(PHPDebugUIMessages.EnterCondition_1, new Object[] {});
		SetConditionDialog dialog = new SetConditionDialog(activeShell, title, message, currentCondition,
				enableCondition, validator);
		if (dialog.open() != Window.OK) {
			return false;
		}
		String condition = dialog.getValue();
		enableCondition = dialog.isSetConditionEnabled();
		if (condition.equals("")) //$NON-NLS-1$
			enableCondition = false;
		breakpoint.setConditionWithEnable(enableCondition, condition);
		return true;
	}

	protected IStructuredSelection getCurrentSelection() {
		IWorkbenchPage page = PHPDebugUIPlugin.getActivePage();
		if (page != null) {
			ISelection selection = page.getSelection();
			if (selection instanceof IStructuredSelection) {
				return (IStructuredSelection) selection;
			}
		}
		return null;
	}

	/**
	 * @see IObjectActionDelegate#setActivePart(IAction, IWorkbenchPart)
	 */
	public void setActivePart(IAction action, IWorkbenchPart targetPart) {
		fPart = targetPart;
	}

	/**
	 * @see IActionDelegate#selectionChanged(IAction, ISelection)
	 */
	public void selectionChanged(IAction action, ISelection sel) {
	}
}