/*
 * 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.wizards.buildingblocks;

import java.util.Comparator;
import java.util.Set;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.dialogs.FilteredItemsSelectionDialog;

import com.motorola.studio.android.codeutils.CodeUtilsActivator;

/**
 * Class that implements a filter dialog to be used by NewLauncherWizardPage class
 */
class FilteredActionsSelectionDialog extends FilteredItemsSelectionDialog
{
    private final Set<String> categorySet;

    public FilteredActionsSelectionDialog(Shell shell, Set<String> categorySet)
    {
        super(shell, true);
        this.categorySet = categorySet;
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.dialogs.FilteredItemsSelectionDialog#createExtendedContentArea(org.eclipse.swt.widgets.Composite)
     */
    @Override
    protected Control createExtendedContentArea(Composite parent)
    {
        return null;
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.dialogs.FilteredItemsSelectionDialog#createFilter()
     */
    @Override
    protected ItemsFilter createFilter()
    {
        return new ItemsFilter()
        {
            /* (non-Javadoc)
             * @see org.eclipse.ui.dialogs.FilteredItemsSelectionDialog.ItemsFilter#isConsistentItem(java.lang.Object)
             */
            @Override
            public boolean isConsistentItem(Object item)
            {
                return true;
            }

            /* (non-Javadoc)
             * @see org.eclipse.ui.dialogs.FilteredItemsSelectionDialog.ItemsFilter#matchItem(java.lang.Object)
             */
            @Override
            public boolean matchItem(Object item)
            {
                if (!(item instanceof String))
                {
                    return false;
                }
                return matches((String) item);
            }

        };
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.dialogs.FilteredItemsSelectionDialog#fillContentProvider(org.eclipse.ui.dialogs.FilteredItemsSelectionDialog.AbstractContentProvider, org.eclipse.ui.dialogs.FilteredItemsSelectionDialog.ItemsFilter, org.eclipse.core.runtime.IProgressMonitor)
     */
    @Override
    protected void fillContentProvider(AbstractContentProvider contentProvider,
            ItemsFilter itemsFilter, IProgressMonitor progressMonitor) throws CoreException
    {
        for (String action : categorySet)
        {
            contentProvider.add(action, itemsFilter);
        }

    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.dialogs.FilteredItemsSelectionDialog#getDialogSettings()
     */
    @Override
    protected IDialogSettings getDialogSettings()
    {
        return CodeUtilsActivator.getDefault().getDialogSettings();
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.dialogs.FilteredItemsSelectionDialog#getElementName(java.lang.Object)
     */
    @Override
    public String getElementName(Object item)
    {
        return (String) item;
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.dialogs.FilteredItemsSelectionDialog#getItemsComparator()
     */
    @Override
    protected Comparator<String> getItemsComparator()
    {
        return new Comparator<String>()
        {

            public int compare(String o1, String o2)
            {
                return o1.compareToIgnoreCase(o2);
            }
        };
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.dialogs.FilteredItemsSelectionDialog#validateItem(java.lang.Object)
     */
    @Override
    protected IStatus validateItem(Object item)
    {
        IStatus status;
        if (categorySet.contains(item))
        {
            status = new Status(IStatus.OK, CodeUtilsActivator.PLUGIN_ID, "");
        }
        else
        {
            status = new Status(IStatus.ERROR, CodeUtilsActivator.PLUGIN_ID, "Select an item.");
        }
        return status;
    }
}