/*
* Copyright (c) 2011 Google Inc.
*
* 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
*/
package com.google.eclipse.protobuf.ui.preferences.editor.numerictag;
import static org.eclipse.jface.window.Window.OK;
import static com.google.eclipse.protobuf.ui.preferences.editor.numerictag.AddOrEditPatternDialog.addPattern;
import static com.google.eclipse.protobuf.ui.preferences.editor.numerictag.AddOrEditPatternDialog.editPattern;
import static com.google.eclipse.protobuf.ui.preferences.editor.numerictag.Messages.add;
import static com.google.eclipse.protobuf.ui.preferences.editor.numerictag.Messages.edit;
import static com.google.eclipse.protobuf.ui.preferences.editor.numerictag.Messages.pageDescription;
import static com.google.eclipse.protobuf.ui.preferences.editor.numerictag.Messages.remove;
import static com.google.eclipse.protobuf.ui.preferences.editor.numerictag.PreferenceNames.NUMERIC_TAG_PATTERNS;
import static com.google.eclipse.protobuf.ui.preferences.pages.binding.BindingToListItems.bindItemsOf;
import org.eclipse.jface.viewers.ListViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
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.Label;
import org.eclipse.swt.widgets.List;
import com.google.eclipse.protobuf.ui.preferences.StringSplitter;
import com.google.eclipse.protobuf.ui.preferences.pages.PreferenceAndPropertyPage;
import com.google.eclipse.protobuf.ui.preferences.pages.binding.PreferenceBinder;
import com.google.eclipse.protobuf.ui.preferences.pages.binding.PreferenceFactory;
/**
* Preference page where users can specify the patterns to use to match comments where "the next id" is being tracked.
*
* @author alruiz@google.com (Alex Ruiz)
*/
public class NumericTagPreferencePage extends PreferenceAndPropertyPage {
private static final String PREFERENCE_PAGE_ID = NumericTagPreferencePage.class.getName();
private List lstPatterns;
private Button btnAdd;
private Button btnEdit;
private Button btnRemove;
@Override protected void doCreateContents(Composite parent) {
Label lblDescription = new Label(parent, SWT.WRAP);
GridData gridData = new GridData(SWT.FILL, SWT.CENTER, false, false, 2, 1);
gridData.widthHint = 150; // only expand further if anyone else requires it
lblDescription.setLayoutData(gridData);
lblDescription.setText(pageDescription);
new Label(parent, SWT.NONE);
ListViewer lstVwrPatterns = new ListViewer(parent, SWT.BORDER | SWT.V_SCROLL);
lstPatterns = lstVwrPatterns.getList();
gridData = new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1);
gridData.heightHint = 127;
lstPatterns.setLayoutData(gridData);
Composite composite = new Composite(parent, SWT.NONE);
composite.setLayoutData(new GridData(SWT.LEFT, SWT.FILL, false, false, 1, 1));
composite.setLayout(new GridLayout(1, false));
btnAdd = new Button(composite, SWT.NONE);
btnAdd.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));
btnAdd.setText(add);
btnEdit = new Button(composite, SWT.NONE);
btnEdit.setEnabled(false);
btnEdit.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));
btnEdit.setText(edit);
btnRemove = new Button(composite, SWT.NONE);
btnRemove.setEnabled(false);
btnRemove.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));
btnRemove.setText(remove);
addEventListeners();
}
private void addEventListeners() {
lstPatterns.addSelectionListener(new SelectionAdapter() {
@Override public void widgetSelected(SelectionEvent e) {
enableButtonsDependingOnListSelection();
}
});
btnAdd.addSelectionListener(new SelectionAdapter() {
@Override public void widgetSelected(SelectionEvent e) {
AddOrEditPatternDialog dialog = addPattern(getShell());
if (dialog.open() == OK) {
lstPatterns.add(dialog.pattern());
}
}
});
btnEdit.addSelectionListener(new SelectionAdapter() {
@Override public void widgetSelected(SelectionEvent e) {
int selectionIndex = lstPatterns.getSelectionIndex();
AddOrEditPatternDialog dialog = editPattern(lstPatterns.getItem(selectionIndex), getShell());
if (dialog.open() == OK) {
lstPatterns.setItem(selectionIndex, dialog.pattern());
}
}
});
btnRemove.addSelectionListener(new SelectionAdapter() {
@Override public void widgetSelected(SelectionEvent e) {
int index = lstPatterns.getSelectionIndex();
if (index < 0) {
return;
}
lstPatterns.remove(index);
enableButtonsDependingOnListSelection();
}
});
}
private void enableButtonsDependingOnListSelection() {
int selectionIndex = lstPatterns.getSelectionIndex();
boolean hasSelection = selectionIndex >= 0;
btnEdit.setEnabled(hasSelection);
btnRemove.setEnabled(hasSelection);
}
@Override protected String enableProjectSettingsPreferenceName() {
return null;
}
@Override protected void setupBinding(PreferenceBinder binder, PreferenceFactory factory) {
StringSplitter splitter = NumericTagPatternSplitter.instance();
binder.add(bindItemsOf(lstPatterns).to(factory.newStringListPreference(NUMERIC_TAG_PATTERNS, splitter)));
}
@Override protected void onProjectSettingsActivation(boolean projectSettingsActive) {}
@Override protected String preferencePageId() {
return PREFERENCE_PAGE_ID;
}
}