/**

 * -----------------------------------------------------------------------------------------------

 *  File: TabItemWidget.java

 *

 *  Copyright (c) 2007 by Keymind Computing as.

 *  All rights reserved.

 *

 *  This file is subject to the terms and conditions of the Apache Licence 2.0.

 *  See the file LICENCE in the main directory of the Keywatch distribution for more details.

 *

 *  Revision History:

 *   $URL: http://keywatch.googlecode.com/svn/trunk/src/server/gwtgui/src/keymind/keywatch/gui/client/desktop/TabItemWidget.java $

 *   $Date: 2009-09-17 11:14:51 +0200 (Thu, 17 Sep 2009) $, $Rev: $

 * -----------------------------------------------------------------------------------------------

 */

package keymind.keywatch.gui.client.desktop;



import com.google.gwt.event.dom.client.ClickEvent;

import com.google.gwt.event.dom.client.ClickHandler;

import com.google.gwt.event.logical.shared.CloseHandler;

import com.google.gwt.event.logical.shared.CloseEvent;

import com.google.gwt.user.client.Window;

import com.google.gwt.user.client.ui.*;

import keymind.keywatch.gui.client.util.Constants;



/**

 * Displays a label and close button. Each desktop tab contains an instance.

 */

public class TabItemWidget extends Composite implements ClickHandler

{

    private DesktopPanel desktopPanel;

    private Label label;

    private Image close;

    private InputBox inputBox;



    static final String PROMPT_TITLE_RENAME = "Rename";

    static final String PROMPT_RENAME = "Please specify the new desktop name.";

    static final String PROMPT_REMOVE = "Are you sure you want to remove the current desktop tab from you profile?";

    static final String TABNAME_SETTINGS = "Settings";

    static final String RENAME_NOT_UNIQUE = "Could not rename because another desktop with the same name exists";



    /**

     * C'tor

     * @param text Text to display

     * @param desktopPanel Owning desktop panel.

     */

    public TabItemWidget(String text, DesktopPanel desktopPanel)

    {

        this.desktopPanel = desktopPanel;



        FlexTable table = new FlexTable();



        label = new Label(text);

        label.setWidth(Constants.MAX_PERCENT);

        label.addClickHandler(this);



        Label space = new Label();

        space.setWidth("5px");



        close = GUICtrl.getCoreImageBundle().view_close_black().createImage();

        close.addClickHandler(this);



        // Initialize, the close image is not visible. The desktop framework will change

        // visibility as needed.

        close.setVisible(false);



        table.setWidget(0,0, label);

        table.setWidget(0,1, space);

        table.setWidget(0,2, close);



        initWidget(table);

    }



    /**

     * Show or hide close button

     *

     * @param visible If true, show close button, else hide it

     */

    public void setCloseVisible(boolean visible)

    {

        close.setVisible(visible);

    }



    /**

     * Called when the Close button is pressed. We call back to the owning DesktopPanel

     * to do the actual closing.

     *

     * @param evt Widget that was clicked

     */

    public void onClick(ClickEvent evt)

    {

        if(evt.getSource() == close)

        {

            closeDesktop();

        }

        else

        {

            if(GUICtrl.getAppDesktop().getCurrentDesktop() == desktopPanel &&

               !desktopPanel.isSettingsDesktop())

            {

                renameDesktop();

            }

        }

    }



    /**

     * Rename the desktop

     */

    private void renameDesktop()

    {

        // Ask for new name

        inputBox = new InputBox(PROMPT_TITLE_RENAME, PROMPT_RENAME);

        inputBox.setInputText(desktopPanel.getCategory().getName());

        inputBox.addCloseHandler(new CloseHandler<PopupPanel>()

        {

            public void onClose(CloseEvent<PopupPanel> event)

            {

                popupClosed(event.getTarget(), event.isAutoClosed());

            }

        });



        // Center and show dialog

        GUICtrl.showDialog(inputBox);

    }



    /**

     * A popup window was closed

     *

     * @param popupPanel The window that was closed

     * @param autoClosed True if the popup was closed by clicking outside the control

     */

    public void popupClosed(PopupPanel popupPanel, boolean autoClosed)

    {

        if(popupPanel == inputBox)

        {

            if (!autoClosed && inputBox.isOkClicked())

            {

                String name = inputBox.getInputText();

                if (name != null && name.length() > 0 && !name.equals(TABNAME_SETTINGS))

                {

                    // The name must be unique

                    if (GUICtrl.getProfileManager().getCategoryByName(name) == null)

                    {

                        desktopPanel.getCategory().setName(name);

                        //GUICtrl.getAppDesktop().renameActiveDesktop(name);

                        label.setText(name);



                        // Save immediately

                        GUICtrl.getProfileManager().setDirty(true);

                        GUICtrl.getProfileManager().updateProfile(false);

                    }

                    else

                    {

                        Window.alert(RENAME_NOT_UNIQUE);

                    }

                }

            }

        }

    }



    /**

     * Close the desktop

     */

    private void closeDesktop()

    {

        if(!desktopPanel.isSettingsDesktop())

        {

            if (Window.confirm(PROMPT_REMOVE))

            {

                // Remove the desktop

                GUICtrl.getAppDesktop().removeDesktop(desktopPanel);

            }

        }

        else

        {

            GUICtrl.getAppDesktop().hideSettingsDesktop();

        }

    }

}