EDIT

// $Id$

/**

* Copyright (C) 2013 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.taxeditor.ui.campanula.basicFields;

import java.util.HashSet;

import java.util.Set;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.KeyAdapter;

import org.eclipse.swt.events.KeyEvent;

import org.eclipse.swt.events.ModifyEvent;

import org.eclipse.swt.events.ModifyListener;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.events.SelectionListener;

import org.eclipse.swt.graphics.Color;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Text;

import eu.etaxonomy.taxeditor.preference.Resources;

import eu.etaxonomy.taxeditor.store.StoreUtil;

import eu.etaxonomy.taxeditor.ui.campanula.compatibility.ICdmFormElement;

import eu.etaxonomy.taxeditor.ui.element.AbstractCdmFormElement;

import eu.etaxonomy.taxeditor.ui.element.CdmFormFactory;

import eu.etaxonomy.taxeditor.ui.element.CdmPropertyChangeEvent;

import eu.etaxonomy.taxeditor.ui.element.IEnableableFormElement;

import eu.etaxonomy.taxeditor.ui.element.ISelectable;

import eu.etaxonomy.taxeditor.ui.element.LayoutConstants;

/**

 * @author pplitzner

 * @date 14.08.2013

 *

 */

public class ToggleableTextFieldController extends AbstractCdmFormElement implements SelectionListener, ModifyListener, IEnableableFormElement, ISelectable {

    private ToggleableTextField toggleableTextField;

    private boolean state;

    private Set<SelectionListener> selectionListener = new HashSet<SelectionListener>();

    //TODO also connect label

//    private Label label;

    /**

     * <p>Constructor for ToggleableTextElement.</p>

     *

     * @param style a int.

     * @param formFactory a {@link eu.etaxonomy.taxeditor.ui.element.CdmFormFactory} object.

     * @param parentElement a {@link eu.etaxonomy.taxeditor.ui.element.ICdmFormElement} object.

     * @param labelString a {@link java.lang.String} object.

     * @param initialText a {@link java.lang.String} object.

     * @param initialState a boolean.

     */

    public ToggleableTextFieldController(ToggleableTextField toggleableTextField, CdmFormFactory formFactory, ICdmFormElement parentElement,

            String initialText, boolean initialState, int style) {

        super(formFactory, parentElement);

        setPropertyChangeListeners(formFactory.getPropertyChangeListeners());

        formFactory.addPropertyChangeListener(this);

        this.toggleableTextField = toggleableTextField;

//        label = formFactory.createLabel(getLayoutComposite(), labelString, style);

//        addControl(label);

        Text text = toggleableTextField.getText();

        addControl(text);

        text.addModifyListener(this);

        text.setLayoutData(LayoutConstants.FILL());

        // Don't accept carriage returns as input

        text.addKeyListener( new KeyAdapter(){

            @Override

            public void keyPressed(KeyEvent e) {

            if(e.character == SWT.CR) {

                e.doit = false;

            }

            }

        });

        Button editButton = toggleableTextField.getEditButton();

        addControl(editButton);

        editButton.addSelectionListener(this);

        setState(initialState);

    }

    /**

     * <p>setText</p>

     *

     * @param text a {@link java.lang.String} object.

     */

    public void setText(String text){

        if(text != null){

            // store current caret position

            Text textField = toggleableTextField.getText();

            int caretPosition = textField.getCaretPosition();

            textField.removeModifyListener(this);

            textField.setText(text);

            textField.addModifyListener(this);

            // restore caret position

            textField.setSelection(caretPosition);

        }

    }

    /**

     * <p>getText</p>

     *

     * @return a {@link java.lang.String} object.

     */

    public String getText(){

        return toggleableTextField.getText().getText();

    }

    /**

     * <p>Setter for the field <code>state</code>.</p>

     *

     * @param state a boolean.

     */

    public void setState(boolean state) {

        this.state = state;

        setEnabled(state);

    }

    /** {@inheritDoc} */

    @Override

    public void setEnabled(boolean enabled) {

        toggleableTextField.getText().setEnabled(enabled);

        String symbolicName = enabled ? Resources.COLOR_FONT_DEFAULT : Resources.COLOR_TEXT_DISABLED;

        toggleableTextField.getText().setForeground(StoreUtil.getColor(symbolicName));

        toggleableTextField.getEditButton().setSelection(enabled);

    }

    /**

     * <p>Getter for the field <code>state</code>.</p>

     *

     * @return a boolean.

     */

    public boolean getState(){

        return state;

    }

    /* (non-Javadoc)

     * @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse.swt.events.SelectionEvent)

     */

    /** {@inheritDoc} */

    @Override

    public void widgetSelected(SelectionEvent e) {

        setState(toggleableTextField.getEditButton().getSelection());

        for(SelectionListener listener : selectionListener){

            listener.widgetSelected(e);

        }

        firePropertyChangeEvent(new CdmPropertyChangeEvent(this, e));

    }

    /**

     * <p>addSelectionListener</p>

     *

     * @param listener a {@link org.eclipse.swt.events.SelectionListener} object.

     */

    public void addSelectionListener(SelectionListener listener){

        selectionListener.add(listener);

    }

    /**

     * <p>removeSelectionListener</p>

     *

     * @param listener a {@link org.eclipse.swt.events.SelectionListener} object.

     */

    public void removeSelectionListener(SelectionListener listener){

        selectionListener.remove(listener);

    }

    /** {@inheritDoc} */

    @Override

    public void widgetDefaultSelected(SelectionEvent e) {}

    /** {@inheritDoc} */

    @Override

    public void modifyText(ModifyEvent e) {

        firePropertyChangeEvent(new CdmPropertyChangeEvent(this, e));

    }

    /** {@inheritDoc} */

    @Override

    public void setIrrelevant(boolean irrelevant) {

        String colorId = irrelevant ? Resources.COLOR_COMPOSITE_IRRELEVANT : Resources.COLOR_COMPOSITE_BACKGROUND;

        Color color = getColor(colorId);

        toggleableTextField.getText().setBackground(color);

    }

    /** {@inheritDoc} */

    @Override

    public void setBackground(Color color) {

//        label.setBackground(color);

        toggleableTextField.setBackground(color);

    }

    @Override

    public void setSelected(boolean selected) {

        setBackground(selected ? SELECTED : getPersistentBackground());

    }

}