src/plugins/android/src/com/motorola/studio/android/preferences/ui/EmulatorPreferencePage.java

/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.motorola.studio.android.preferences.ui;

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.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;
import org.eclipse.ui.PlatformUI;

import com.motorola.studio.android.AndroidPlugin;
import com.motorola.studio.android.i18n.AndroidNLS;

/**
 * This class draws the preference page that allow user to chose between display the
 * native emulator outside the view after it's closed or not.
 */
public class EmulatorPreferencePage extends PreferencePage implements IWorkbenchPreferencePage
{

    private final String PREFERENCE_PAGE_HELP = AndroidPlugin.PLUGIN_ID
            + ".preference-emulator-view"; //$NON-NLS-1$

    protected boolean shallUnembedEmulators;

    private Button unembedCheckBox;

    /* (non-Javadoc)
     * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
     */
    public void init(IWorkbench workbench)
    {
        super.getPreferenceStore().setDefault(AndroidPlugin.SHALL_UNEMBED_EMULATORS_PREF_KEY, true);
        shallUnembedEmulators =
                super.getPreferenceStore().getBoolean(
                        AndroidPlugin.SHALL_UNEMBED_EMULATORS_PREF_KEY);
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
     */
    @Override
    protected Control createContents(Composite parent)
    {
        PlatformUI.getWorkbench().getHelpSystem().setHelp(parent, PREFERENCE_PAGE_HELP);

        Composite mainComposite = new Composite(parent, SWT.NONE);

        GridLayout layout = new GridLayout();
        mainComposite.setLayout(layout);

        Group emulatorViewGroup = new Group(mainComposite, SWT.NONE);
        GridLayout emulatorViewGroupLayout = new GridLayout();
        GridData emulatorViewGroupLayoutData =
                new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1);
        emulatorViewGroup.setLayoutData(emulatorViewGroupLayoutData);
        emulatorViewGroup.setLayout(emulatorViewGroupLayout);
        emulatorViewGroup.setText(AndroidNLS.EmulatorPreferencePage_EmulatorViewGroup);

        unembedCheckBox = new Button(emulatorViewGroup, SWT.CHECK);
        GridData unembedCheckBoxData = new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1);
        unembedCheckBox.setLayoutData(unembedCheckBoxData);
        unembedCheckBox.setText(AndroidNLS.EmulatorPreferencePage_UnembedCheckBox);
        unembedCheckBox.setSelection(shallUnembedEmulators);
        unembedCheckBox.addSelectionListener(new SelectionAdapter()
        {
            @Override
            public void widgetSelected(SelectionEvent e)
            {
                Button source = (Button) e.getSource();
                shallUnembedEmulators = source.getSelection();
                super.widgetSelected(e);
            }
        });

        Label noteLabel = new Label(emulatorViewGroup, SWT.WRAP);
        noteLabel.setText(AndroidNLS.EmulatorPreferencePage_UnembedNote);
        GridData noteLabelLayoutData = new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1);
        noteLabelLayoutData.widthHint = 100;
        noteLabel.setLayoutData(noteLabelLayoutData);

        return mainComposite;
    }

    @Override
    public boolean performOk()
    {
        getPreferenceStore().setValue(AndroidPlugin.SHALL_UNEMBED_EMULATORS_PREF_KEY,
                shallUnembedEmulators);
        return super.performOk();
    }

    @Override
    protected void performDefaults()
    {
        shallUnembedEmulators = true;
        unembedCheckBox.setSelection(shallUnembedEmulators);
        super.performDefaults();
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.preference.PreferencePage#doGetPreferenceStore()
     */
    @Override
    protected IPreferenceStore doGetPreferenceStore()
    {
        return AndroidPlugin.getDefault().getPreferenceStore();
    }

}