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/*******************************************************************************
* Copyright (c) 2020 Martin Weber.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package org.eclipse.cdt.cmake.is.core.ui.internal;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
import org.eclipse.cdt.cmake.is.core.IParserPreferences;
import org.eclipse.cdt.cmake.is.core.IParserPreferencesAccess;
import org.eclipse.cdt.cmake.is.core.IParserPreferencesMetadata;
import org.eclipse.core.runtime.preferences.PreferenceMetadata;
import org.eclipse.e4.core.contexts.EclipseContextFactory;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.preference.PreferencePage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.FocusAdapter;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
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.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;
import org.osgi.framework.FrameworkUtil;
/**
* Preference page for indexer support.
*/
public class IndexerSupportPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {
private Text pattern;
private Button btnVersionsEnabled;
private Button btnWithConsole;
private final IParserPreferencesAccess prefsAccess;
public IndexerSupportPreferencePage() {
prefsAccess = EclipseContextFactory.getServiceContext(FrameworkUtil.getBundle(getClass()).getBundleContext())
.get(IParserPreferencesAccess.class);
setDescription(Messages.IndexerSupportPreferencePage_description);
}
/**
* Creates the field editors.
*/
@Override
protected Control createContents(Composite parent) {
final IParserPreferencesMetadata prefsMeta = prefsAccess.metadata();
final IParserPreferences prefs = prefsAccess.getWorkspacePreferences();
final Composite composite = new Composite(parent, SWT.NONE);
composite.setLayout(new GridLayout(1, false));
GridDataFactory.swtDefaults().applyTo(composite);
final Group gr = createGroup(composite, SWT.FILL, 1,
Messages.IndexerSupportPreferencePage_label_version_suffix_group, 2);
btnVersionsEnabled = createCheckbox(gr, SWT.BEGINNING, 2, prefsMeta.tryVersionSuffix());
btnVersionsEnabled.setSelection(prefs.getTryVersionSuffix());
{
Label label = new Label(gr, SWT.NONE);
label.setText(Messages.IndexerSupportPreferencePage_label_suffix_pattern);
GridDataFactory.defaultsFor(label).applyTo(label);
}
pattern = new Text(gr, SWT.SINGLE | SWT.BORDER);
GridDataFactory.defaultsFor(pattern).applyTo(pattern);
pattern.setToolTipText(prefsMeta.versionSuffixPattern().description());
pattern.setEnabled(btnVersionsEnabled.getSelection());
pattern.setText(prefs.getVersionSuffixPattern());
pattern.addFocusListener(new FocusAdapter() {
@Override
public void focusLost(FocusEvent e) {
if (btnVersionsEnabled.getSelection()) {
final String text = pattern.getText();
try {
Pattern.compile(text);
setErrorMessage(null);
} catch (PatternSyntaxException ex) {
String msg = String.format(Messages.IndexerSupportPreferencePage_errmsg_suffix_regex,
ex.getDescription(), ex.getPattern(), ex.getIndex());
setErrorMessage(msg);
}
}
}
});
// to adjust sensitivity...
btnVersionsEnabled.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent event) {
boolean selected = ((Button) event.widget).getSelection();
pattern.setEnabled(selected);
if (!selected) {
setErrorMessage(null);
}
}
});
btnWithConsole = createCheckbox(composite, SWT.BEGINNING, 1, prefsMeta.allocateConsole());
btnWithConsole.setSelection(prefs.getAllocateConsole());
return composite;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
*/
@Override
public void init(IWorkbench workbench) {
}
@Override
protected void performDefaults() {
final IParserPreferencesMetadata prefsMeta = prefsAccess.metadata();
btnVersionsEnabled.setSelection(prefsMeta.tryVersionSuffix().defaultValue());
pattern.setText(prefsMeta.versionSuffixPattern().defaultValue());
btnWithConsole.setSelection(prefsMeta.allocateConsole().defaultValue());
setErrorMessage(null);
super.performDefaults();
}
@Override
public boolean performOk() {
final IParserPreferences prefs = prefsAccess.getWorkspacePreferences();
prefs.setTryVersionSuffix(btnVersionsEnabled.getSelection());
prefs.setVersionSuffixPattern(pattern.getText());
prefs.setAllocateConsole(btnWithConsole.getSelection());
return true;
}
/**
* Creates a check-box button.
*
* @param parent
* @param horizontalAlignment how control will be positioned horizontally within
* a cell of the parent's grid layout, one of:
* SWT.BEGINNING (or SWT.LEFT), SWT.CENTER, SWT.END
* (or SWT.RIGHT), or SWT.FILL
* @param horizontalSpan number of column cells in the parent's grid layout
* that the control will take up.
* @param text text to display on the check-box
*/
private static Button createCheckbox(Composite parent, int horizontalAlignment, int horizontalSpan,
PreferenceMetadata<Boolean> option) {
Button b = new Button(parent, SWT.CHECK);
b.setText(option.name());
b.setToolTipText(option.description());
GridDataFactory.defaultsFor(b).align(horizontalAlignment, SWT.CENTER).span(horizontalSpan, 1).grab(true, false)
.applyTo(b);
return b;
}
/**
* Creates a group with a grid layout.
*
* @param parent
* @param horizontalAlignment how control will be positioned horizontally within
* a cell of the parent's grid layout, one of:
* SWT.BEGINNING (or SWT.LEFT), SWT.CENTER, SWT.END
* (or SWT.RIGHT), or SWT.FILL
* @param horizontalSpan number of column cells in the parent's grid layout
* that the control will take up.
* @param text title text to display on the group
* @param numColumns the number of columns in the grid inside the group
*/
private static Group createGroup(Composite parent, int horizontalAlignment, int horizontalSpan, String text,
int numColumns) {
Group gr = new Group(parent, SWT.NONE);
gr.setLayout(new GridLayout(numColumns, false));
gr.setText(text);
GridDataFactory.defaultsFor(gr).align(horizontalAlignment, SWT.CENTER).span(horizontalSpan, 1).grab(true, false)
.applyTo(gr);
return gr;
}
}
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