/*******************************************************************************
* Copyright (c) 2004, 2015 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
*******************************************************************************/
package org.eclipse.jdt.internal.debug.ui;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jdt.debug.ui.IJavaDebugUIConstants;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.jface.dialogs.StatusDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
public class CreateStepFilterDialog extends StatusDialog {
private static final String DEFAULT_NEW_FILTER_TEXT = ""; //$NON-NLS-1$
private Text text;
private Filter filter;
private Button okButton;
private boolean filterValid;
private boolean okClicked;
private Filter[] existingFilters;
private CreateStepFilterDialog(Shell parent, Filter filter, Filter[] existingFilters) {
super(parent);
setShellStyle(getShellStyle() | SWT.RESIZE);
this.filter = filter;
this.existingFilters = existingFilters;
setTitle(DebugUIMessages.CreateStepFilterDialog_2);
setStatusLineAboveButtons(false);
}
static Filter showCreateStepFilterDialog(Shell parent, Filter[] existingFilters) {
CreateStepFilterDialog createStepFilterDialog = new CreateStepFilterDialog(parent, new Filter(DEFAULT_NEW_FILTER_TEXT, true), existingFilters);
createStepFilterDialog.create();
createStepFilterDialog.open();
return createStepFilterDialog.filter;
}
@Override
protected void createButtonsForButtonBar(Composite parent) {
okButton= createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true);
okButton.setEnabled(false);
createButton(parent, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, false);
}
@Override
protected Control createDialogArea(Composite parent) {
Composite container = (Composite)super.createDialogArea(parent);
GridLayout gridLayout = new GridLayout();
gridLayout.numColumns = 2;
gridLayout.marginHeight = 15;
gridLayout.marginWidth = 15;
container.setLayout(gridLayout);
int textStyles = SWT.SINGLE | SWT.LEFT;
Label label= new Label(container, textStyles);
label.setText(DebugUIMessages.CreateStepFilterDialog_3);
label.setFont(container.getFont());
// create & configure Text widget for editor
// Fix for bug 1766. Border behavior on for text fields varies per platform.
// On Motif, you always get a border, on other platforms,
// you don't. Specifying a border on Motif results in the characters
// getting pushed down so that only there very tops are visible. Thus,
// we have to specify different style constants for the different platforms.
if (!SWT.getPlatform().equals("motif")) { //$NON-NLS-1$
textStyles |= SWT.BORDER;
}
text = new Text(container, textStyles);
GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
gridData.horizontalSpan=1;
gridData.widthHint = 300;
text.setLayoutData(gridData);
text.setFont(container.getFont());
text.addModifyListener(new ModifyListener() {
@Override
public void modifyText(ModifyEvent e) {
validateChange();
if (!filterValid) {
updateStatus(new StatusInfo(IStatus.ERROR, DebugUIMessages.CreateStepFilterDialog_4));
} else if (isDuplicateFilter(text.getText().trim())) {
updateStatus(new StatusInfo(IStatus.WARNING, DebugUIMessages.CreateStepFilterDialog_5));
return;
} else {
updateStatus(new StatusInfo());
}
}
});
return container;
}
private void validateChange() {
String trimmedValue = text.getText().trim();
if (trimmedValue.length()>0 && validateInput(trimmedValue)) {
okButton.setEnabled(true);
filter.setName(text.getText());
filterValid = true;
} else {
okButton.setEnabled(false);
filter.setName(DEFAULT_NEW_FILTER_TEXT);
filterValid = false;
}
}
private boolean isDuplicateFilter(String trimmedValue) {
for (int i=0; i<existingFilters.length; i++) {
if(existingFilters[i].getName().equals(trimmedValue)) {
return true;
}
}
return false;
}
/**
* A valid step filter is simply one that is a valid Java identifier.
* and, as defined in the JDI spec, the regular expressions used for
* step filtering must be limited to exact matches or patterns that
* begin with '*' or end with '*'. Beyond this, a string cannot be validated
* as corresponding to an existing type or package (and this is probably not
* even desirable).
*/
private boolean validateInput(String trimmedValue) {
char firstChar= trimmedValue.charAt(0);
if (!Character.isJavaIdentifierStart(firstChar)) {
if (!(firstChar == '*')) {
return false;
}
}
int length= trimmedValue.length();
for (int i= 1; i < length; i++) {
char c= trimmedValue.charAt(i);
if (!Character.isJavaIdentifierPart(c)) {
if (c == '.' && i != (length - 1)) {
continue;
}
if (c == '*' && i == (length - 1)) {
continue;
}
return false;
}
}
return true;
}
/**
* Returns the name of the section that this dialog stores its settings in
*
* @return String
*/
protected String getDialogSettingsSectionName() {
return IJavaDebugUIConstants.PLUGIN_ID + ".CREATE_STEP_FILTER_DIALOG_SECTION"; //$NON-NLS-1$
}
/* (non-Javadoc)
* @see org.eclipse.jface.window.Window#close()
*/
@Override
public boolean close() {
if (!okClicked) {
filterValid = false;
filter = null;
}
return super.close();
}
/* (non-Javadoc)
* @see org.eclipse.jface.dialogs.Dialog#getDialogBoundsSettings()
*/
@Override
protected IDialogSettings getDialogBoundsSettings() {
IDialogSettings settings = JDIDebugUIPlugin.getDefault().getDialogSettings();
IDialogSettings section = settings.getSection(getDialogSettingsSectionName());
if (section == null) {
section = settings.addNewSection(getDialogSettingsSectionName());
}
return section;
}
@Override
protected void okPressed() {
okClicked = true;
super.okPressed();
}
}