com.google.eclipse.protobuf.ui.preferences.editor.save.SaveActionsPreferencePage.java Source code

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Here is the source code for com.google.eclipse.protobuf.ui.preferences.editor.save.SaveActionsPreferencePage.java

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/*
 * 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.save;

import static com.google.eclipse.protobuf.ui.preferences.editor.save.Messages.inAllLines;
import static com.google.eclipse.protobuf.ui.preferences.editor.save.Messages.inEditedLines;
import static com.google.eclipse.protobuf.ui.preferences.editor.save.Messages.removeTrailingWhitespace;
import static com.google.eclipse.protobuf.ui.preferences.editor.save.PreferenceNames.IN_ALL_LINES;
import static com.google.eclipse.protobuf.ui.preferences.editor.save.PreferenceNames.IN_EDITED_LINES;
import static com.google.eclipse.protobuf.ui.preferences.editor.save.PreferenceNames.REMOVE_TRAILING_WHITESPACE;
import static com.google.eclipse.protobuf.ui.preferences.pages.binding.BindingToButtonSelection.bindSelectionOf;

import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.preference.PreferencePage;
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.Control;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;
import org.eclipse.xtext.ui.editor.preferences.IPreferenceStoreAccess;

import com.google.eclipse.protobuf.ui.preferences.pages.binding.PreferenceBinder;
import com.google.eclipse.protobuf.ui.preferences.pages.binding.PreferenceFactory;
import com.google.inject.Inject;

/**
 * "Save Actions" preference page.
 *
 * @author alruiz@google.com (Alex Ruiz)
 */
public class SaveActionsPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {
    @Inject
    private IPreferenceStoreAccess preferenceStoreAccess;

    private final PreferenceBinder preferenceBinder = new PreferenceBinder();

    private Button btnRemoveTrailingWhitespace;
    private Button btnInEditedLines;
    private Button btnInAllLines;

    @Override
    public void init(IWorkbench workbench) {
    }

    @Override
    protected Control createContents(Composite parent) {
        Composite contents = new Composite(parent, NONE);
        contents.setLayout(new GridLayout(1, false));
        btnRemoveTrailingWhitespace = new Button(contents, SWT.CHECK);
        btnRemoveTrailingWhitespace.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, true, false, 1, 1));
        btnRemoveTrailingWhitespace.setText(removeTrailingWhitespace);

        Composite composite = new Composite(contents, SWT.NONE);
        composite.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));
        composite.setLayout(new GridLayout(1, false));

        btnInEditedLines = new Button(composite, SWT.RADIO);
        btnInEditedLines.setText(inEditedLines);

        btnInAllLines = new Button(composite, SWT.RADIO);
        btnInAllLines.setText(inAllLines);

        setUpBinding();
        preferenceBinder.applyValues();
        updateContents();
        addEventListeners();
        return contents;
    }

    private void setUpBinding() {
        PreferenceFactory factory = new PreferenceFactory(getPreferenceStore());
        preferenceBinder.addAll(
                bindSelectionOf(btnRemoveTrailingWhitespace)
                        .to(factory.newBooleanPreference(REMOVE_TRAILING_WHITESPACE)),
                bindSelectionOf(btnInAllLines).to(factory.newBooleanPreference(IN_ALL_LINES)),
                bindSelectionOf(btnInEditedLines).to(factory.newBooleanPreference(IN_EDITED_LINES)));
    }

    private void addEventListeners() {
        btnRemoveTrailingWhitespace.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                updateContents();
            }
        });
    }

    private void updateContents() {
        boolean enabled = btnRemoveTrailingWhitespace.getSelection();
        btnInAllLines.setEnabled(enabled);
        btnInEditedLines.setEnabled(enabled);
    }

    @Override
    protected IPreferenceStore doGetPreferenceStore() {
        return preferenceStoreAccess.getWritablePreferenceStore();
    }

    @Override
    public boolean performOk() {
        preferenceBinder.saveValues();
        return true;
    }

    @Override
    protected void performDefaults() {
        preferenceBinder.applyDefaults();
        super.performDefaults();
        updateContents();
    }
}