src/plugins/android/src/com/motorola/studio/android/preferences/ui/AndroidPreferencePage.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.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.common.preferences.DialogWithToggleUtils;
import com.motorola.studio.android.common.utilities.EclipseUtils;
import com.motorola.studio.android.i18n.AndroidNLS;

/**
 * DESCRIPTION: 
 * This class represents the preference page for Android Emulator.
 * It only gives to the user the option to reset all dialog configuration 
 * clearing all 'Do not show me again' settings and showing all hidden dialogs
 * again. 
 * <br>
 * RESPONSIBILITY:
 * Create the preference page for Android Emulator.
 * <br>
 * COLABORATORS:
 * none
 * <br>
 * USAGE: 
 * The plugin.xml file links this class to the corresponding preference page
 * extension point.
 * 
 * @see PreferencePage
 * @see IWorkbenchPreferencePage
 */
public class AndroidPreferencePage extends PreferencePage implements IWorkbenchPreferencePage
{
    private final String PREFERENCE_PAGE_HELP = AndroidPlugin.PLUGIN_ID
            + ".preference-android-emulator"; //$NON-NLS-1$

    private boolean cleanActionRequired = false;

    /**
     * @see PreferencePage#createContents(Composite)
     */
    @Override
    protected Control createContents(Composite parent)
    {
        PlatformUI.getWorkbench().getHelpSystem().setHelp(parent, PREFERENCE_PAGE_HELP);

        Composite entryTable = new Composite(parent, SWT.NULL);
        GridData data = new GridData(SWT.FILL, SWT.TOP, true, false);
        entryTable.setLayoutData(data);

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

        layout = new GridLayout(2, false);

        Group dontAskGroup = new Group(entryTable, SWT.NONE);
        dontAskGroup.setLayout(layout);
        dontAskGroup.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false));
        dontAskGroup.setText(AndroidNLS.UI_Preferences_Dialogs_Group_Title);

        Label label = new Label(dontAskGroup, SWT.WRAP);
        label.setText(AndroidNLS.UI_Preferences_Dialogs_Group_Message);
        data = new GridData(SWT.FILL, SWT.CENTER, true, false);
        data.widthHint = 100;
        label.setLayoutData(data);

        Button clearButton = new Button(dontAskGroup, SWT.PUSH);
        clearButton.setText(AndroidNLS.UI_Preferences_Dialogs_Group_Button);
        data = new GridData(SWT.CENTER, SWT.CENTER, false, false);
        data.widthHint = 80;
        clearButton.setLayoutData(data);
        clearButton.addSelectionListener(new SelectionAdapter()
        {
            @Override
            public void widgetSelected(SelectionEvent e)
            {
                cleanActionRequired =
                        EclipseUtils.displayPrompt(PlatformUI.getWorkbench().getDisplay(),
                                AndroidNLS.UI_Preferences_Dialogs_Group_Title,
                                AndroidNLS.UI_Preferences_Dialogs_Clean_Message);
                ;
            }
        });
        clearButton.pack();

        return entryTable;
    }

    /**
     * @see IWorkbenchPreferencePage#init(IWorkbench)
     */
    public void init(IWorkbench workbench)
    {
        noDefaultAndApplyButton();
    }

    /**
     * @see PreferencePage#performOk()
     */
    @Override
    public boolean performOk()
    {
        if (cleanActionRequired)
        {
            DialogWithToggleUtils.resetAllDialogsConfiguration();
        }

        return super.performOk();
    }
}