/*
 * 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.motorolamobility.studio.android.db.core.ui.wizards;

import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
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.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

import com.motorolamobility.studio.android.db.core.i18n.DbCoreNLS;
import com.motorolamobility.studio.android.db.core.model.Field;
import com.motorolamobility.studio.android.db.core.model.Field.AutoIncrementType;
import com.motorolamobility.studio.android.db.core.model.Field.DataType;

public class AddTableFieldDialog extends Dialog
{

    private Field field;

    private Text nameText;

    private Combo typeCombo;

    private Text defaultText;

    private Button isPrimaryButton;

    private Composite primaryKeyOptions;

    private Button noneButton;

    private Button incrementalButton;

    private Button decrementalButton;

    private Label primaryKeyBehavior;

    public AddTableFieldDialog(Shell parentShell)
    {
        super(parentShell);
    }

    public AddTableFieldDialog(Shell parentShell, Field newField)
    {
        super(parentShell);
        field = newField;
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
     */
    @Override
    public Control createDialogArea(Composite parent)
    {
        this.getShell().setText(DbCoreNLS.CreateTableWizardPage_AddEditField_DialogTitle);
        Composite composite = new Composite(parent, SWT.FILL);
        GridData layoutData = new GridData(SWT.FILL, SWT.FILL, true, true);
        composite.setLayout(new GridLayout(2, false));
        composite.setLayoutData(layoutData);
        layoutData = new GridData(SWT.LEFT, SWT.CENTER, false, false);

        Label nameLabel = new Label(composite, SWT.NONE);
        nameLabel.setText(DbCoreNLS.AddTableFieldDialog_FieldNameLabel);
        nameLabel.setLayoutData(layoutData);

        layoutData = new GridData(SWT.FILL, SWT.CENTER, true, false);
        nameText = new Text(composite, SWT.BORDER);
        nameText.setLayoutData(layoutData);
        if (field != null)
        {
            nameText.setText(field.getName());
        }

        nameText.addModifyListener(new ModifyListener()
        {

            public void modifyText(ModifyEvent e)
            {
                getButton(OK).setEnabled(
                        (nameText.getText().trim().length() > 0)
                                && !(nameText.getText().trim().contains(" "))); //$NON-NLS-1$

            }
        });

        layoutData = new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1);
        isPrimaryButton = new Button(composite, SWT.CHECK);
        isPrimaryButton.setLayoutData(layoutData);
        isPrimaryButton.setText(DbCoreNLS.AddTableFieldDialog_PrimaryKeyLabel);
        if (field != null)
        {
            isPrimaryButton.setSelection(field.isPrimaryKey());

        }

        isPrimaryButton.addSelectionListener(new SelectionAdapter()
        {
            @Override
            public void widgetSelected(SelectionEvent e)
            {
                defaultText.setEnabled(!(isPrimaryButton.getSelection()));
                primaryKeyOptions.setEnabled((isPrimaryButton.getSelection()));
            }
        });
        primaryKeyOptions = new Composite(composite, SWT.BORDER)
        {
            @Override
            public void setEnabled(boolean enabled)
            {
                noneButton.setEnabled(enabled);
                incrementalButton.setEnabled(enabled);
                decrementalButton.setEnabled(enabled);
                primaryKeyBehavior.setEnabled(enabled);

                super.setEnabled(enabled);
            }
        };
        layoutData = new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1);
        primaryKeyOptions.setLayout(new GridLayout(1, false));
        primaryKeyOptions.setLayoutData(layoutData);

        primaryKeyBehavior = new Label(primaryKeyOptions, SWT.NONE);
        primaryKeyBehavior.setLayoutData(layoutData);
        primaryKeyBehavior.setText(DbCoreNLS.AddTableFieldDialog_PrimaryKeyAutomaticBehaviourLabel);

        layoutData = new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1);
        noneButton = new Button(primaryKeyOptions, SWT.RADIO);
        noneButton.setLayoutData(layoutData);
        noneButton.setText(DbCoreNLS.AddTableFieldDialog_PrimaryKeyAutomaticBehaviour_NoneLabel);

        incrementalButton = new Button(primaryKeyOptions, SWT.RADIO);
        incrementalButton.setLayoutData(layoutData);
        incrementalButton
                .setText(DbCoreNLS.AddTableFieldDialog_PrimaryKeyAutomaticBehaviour_IncrementalLabel);

        decrementalButton = new Button(primaryKeyOptions, SWT.RADIO);
        decrementalButton.setLayoutData(layoutData);
        decrementalButton
                .setText(DbCoreNLS.AddTableFieldDialog_PrimaryKeyAutomaticBehaviour_DecrementalLabel);

        Boolean isNew = (field != null) && (field.isPrimaryKey());
        if (isNew)
        {
            noneButton.setSelection((field.getAutoIncrementType() == AutoIncrementType.NONE));
            incrementalButton
                    .setSelection((field.getAutoIncrementType() == AutoIncrementType.ASCENDING));
            decrementalButton
                    .setSelection((field.getAutoIncrementType() == AutoIncrementType.DESCENDING));

        }
        else
        {
            noneButton.setSelection(true);
        }

        primaryKeyOptions.setEnabled(isNew);

        layoutData = new GridData(SWT.LEFT, SWT.CENTER, false, false);
        Label typeLabel = new Label(composite, SWT.NONE);
        typeLabel.setText(DbCoreNLS.AddTableFieldDialog_FieldTypeLabel);
        typeLabel.setLayoutData(layoutData);

        layoutData = new GridData(SWT.FILL, SWT.CENTER, true, false);
        typeCombo = new Combo(composite, SWT.READ_ONLY);
        typeCombo.setLayoutData(layoutData);

        int integerTypeIndex = 0;

        for (DataType type : DataType.values())
        {
            typeCombo.add(type.toString());

            if (type.equals(DataType.INTEGER))
            {
                integerTypeIndex = typeCombo.getItemCount() - 1;
            }

        }

        typeCombo.select(integerTypeIndex);

        if (field != null)
        {
            typeCombo.select(typeCombo.indexOf(field.getType().toString()));
        }

        layoutData = new GridData(SWT.LEFT, SWT.CENTER, false, false);
        Label defaultLabel = new Label(composite, SWT.NONE);
        defaultLabel.setText(DbCoreNLS.AddTableFieldDialog_FieldDefaultValueLabel);
        defaultLabel.setLayoutData(layoutData);

        layoutData = new GridData(SWT.FILL, SWT.CENTER, true, false);
        defaultText = new Text(composite, SWT.BORDER);
        defaultText.setLayoutData(layoutData);
        if (field != null)
        {
            defaultText.setText(field.getDefaultValue());
        }

        if (field != null)
        {
            defaultText.setEnabled(!field.isPrimaryKey());

            primaryKeyOptions.setEnabled(field.isPrimaryKey());

        }

        composite.layout();

        return composite;
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.dialogs.Dialog#okPressed()
     */
    @Override
    protected void okPressed()
    {
        if (field == null)
        {
            field = new Field();
        }

        field.setName(nameText.getText());
        field.setPrimaryKey(isPrimaryButton.getSelection());
        field.setDefaultValue(defaultText.getText().trim());
        field.setType(DataType.valueOf(typeCombo.getItem(typeCombo.getSelectionIndex())));

        if (noneButton.getSelection())
        {

            field.setAutoIncrementType(Field.AutoIncrementType.NONE);
        }
        else if (incrementalButton.getSelection())
        {
            field.setAutoIncrementType(Field.AutoIncrementType.ASCENDING);
        }
        else if (decrementalButton.getSelection())
        {
            field.setAutoIncrementType(Field.AutoIncrementType.DESCENDING);
        }

        super.okPressed();

    }

    public Field getField()
    {
        return field;
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.dialogs.Dialog#createButton(org.eclipse.swt.widgets.Composite, int, java.lang.String, boolean)
     */
    @Override
    protected Button createButton(Composite parent, int id, String label, boolean defaultButton)
    {
        Button button = super.createButton(parent, id, label, defaultButton);
        button.setEnabled((id != OK) || (field != null));
        return button;

    }

}