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.element;

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.graphics.Color;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Control;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Listener;

import org.eclipse.swt.widgets.Text;

import org.eclipse.ui.forms.widgets.FormToolkit;

import org.eclipse.ui.forms.widgets.TableWrapData;

import org.eclipse.wb.swt.SWTResourceManager;

import eu.etaxonomy.cdm.common.CdmUtils;

import eu.etaxonomy.taxeditor.preference.Resources;

/**

 * @author pplitzner

 * @date 23.07.2013

 *

 */

public class TextWithLabelComposite extends AbstractCdmFormElementComposite implements ModifyListener, IEnableableFormElement, ISelectable {

    protected Text text;

    private final Label label;

    /** Constant <code>MAX_HEIGHT=0</code> */

    public static final int MAX_HEIGHT = 0;

    /** Constant <code>SINGLE=-1</code> */

    public static final int SINGLE = -1;

    /**

     *

     *

     */

    public TextWithLabelComposite(Composite parent, FormToolkit formFactory, ICdmFormElement parentFormElement, String labelString,

            String initialText, Integer textHeight, int style) {

        super(parent, formFactory, parentFormElement, style);

        setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE));

        //vvvvvvvvvvvvv

        initialText = initialText==null?"":initialText;

        int scrollStyle = textHeight == null ? SWT.NULL : (SWT.V_SCROLL | SWT.MULTI);

        int combinedStyle = style | SWT.BORDER | scrollStyle;

        // SWT.PASSWORD does not work when SWT.WRAP is set.

        if (style != SWT.PASSWORD) {

            combinedStyle = combinedStyle | SWT.WRAP;

        }

        //^^^^^^^^^^^^^^

        label = new Label(this, SWT.NONE);

        TableWrapData twd_lblNewLabel = new TableWrapData(TableWrapData.RIGHT, TableWrapData.TOP);

        twd_lblNewLabel.grabHorizontal = true;

        twd_lblNewLabel.align = TableWrapData.LEFT;

        label.setLayoutData(twd_lblNewLabel);

        label.setText(labelString);

        text = new Text(this, SWT.NONE);

        TableWrapData twd_text_1 = new TableWrapData(TableWrapData.FILL_GRAB, TableWrapData.TOP);

        twd_text_1.align = TableWrapData.RIGHT;

        twd_text_1.grabHorizontal = false;

        text.setText(initialText);

        text.setLayoutData(twd_text_1);

        //vvvvvvvvvvvvvvvvvv

        if (textHeight == null) {

            text.addKeyListener(new KeyAdapter() {

                @Override

                public void keyPressed(KeyEvent e) {

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

                        // Don't accept carriage returns as input when in single

                        // line mode

                        e.doit = false;

                    } else if (e.character == SWT.TAB) {

                        // traverse is not working for wrapped text widgets so

                        // we reintroduce it here

                        e.doit = false;

                        TextWithLabelComposite.this.text.traverse(SWT.TRAVERSE_TAB_NEXT);

                    }

                }

            });

        }

        TableWrapData layoutData = LayoutConstants.FILL();

        if (textHeight != null && textHeight > 0) {

            (layoutData).heightHint = textHeight;

        }

        text.setLayoutData(layoutData);

        text.addModifyListener(this);

        addControl(label);

        addControl(text);

    }

    /**

     * Get the text of this composites text composite

     *

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

     */

    public String getText() {

        return text.getText();

    }

    /**

     * Set the text of this composites text composite

     *

     * @param string

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

     */

    public void setText(String string) {

        Listener[] listeners = text.getListeners(SWT.Modify);

        for (Listener listener : listeners) {

            text.removeListener(SWT.Modify, listener);

        }

        text.setText(CdmUtils.Nz(string));

        for (Listener listener : listeners) {

            text.addListener(SWT.Modify, listener);

        }

    }

    /*

     * (non-Javadoc)

     *

     * @see

     * org.eclipse.swt.events.ModifyListener#modifyText(org.eclipse.swt.events

     * .ModifyEvent)

     */

    /** {@inheritDoc} */

    @Override

    public void modifyText(ModifyEvent e) {

        firePropertyChangeEvent(new CdmPropertyChangeEvent(this, e));

    }

    /** {@inheritDoc} */

    @Override

    public void setEnabled(boolean enabled) {

        text.setEnabled(enabled);

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

        text.setForeground(getColor(symbolicName));

    }

    /** {@inheritDoc} */

    @Override

    public void setIrrelevant(boolean irrelevant) {

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

        Color color = getColor(colorId);

        text.setBackground(color);

    }

    /** {@inheritDoc} */

    @Override

    public void setBackground(Color color) {

        super.setBackground(color);

        if (label != null) {

            label.setBackground(color);

        }

    }

    @Override

    public void setSelected(boolean selected) {

        setBackground(selected ? SELECTED : getPersistentBackground());

    }

    /*

     * (non-Javadoc)

     *

     * @see eu.etaxonomy.taxeditor.forms.AbstractCdmFormElement#setFocus()

     */

    /** {@inheritDoc}

     * @return */

    @Override

    public boolean setFocus() {

        return text.setFocus();

    }

    /**

     * <p>

     * getMainControl

     * </p>

     *

     * @return a {@link org.eclipse.swt.widgets.Control} object.

     */

    public Control getMainControl() {

        return text;

    }

    /**

     * <p>

     * setTextLimit

     * </p>

     *

     * @param limit

     *            a int.

     */

    public void setTextLimit(int limit) {

        text.setTextLimit(limit);

    }

}