Synnefo » Pithos Web Client

/*

 * Copyright 2011-2012 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

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 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

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 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 */

package gr.grnet.pithos.web.client;

import com.google.gwt.dom.client.NativeEvent;

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

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

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

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

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

import com.google.gwt.user.client.Event.NativePreviewEvent;

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

import gr.grnet.pithos.web.client.commands.AddUserCommand;

import gr.grnet.pithos.web.client.grouptree.Group;

/**

 * The 'Folder properties' dialog box implementation.

 */

public class GroupCreateDialog extends DialogBox {

    protected Pithos app;

    private Command callback;

    /**

     * The widget that holds the folderName of the folder.

     */

    TextBox groupNameTextBox = new TextBox();

    final VerticalPanel inner;

    public GroupCreateDialog(final Pithos app) {

        this(app, null);

    }

    /**

     * The widget's constructor.

     */

    public GroupCreateDialog(final Pithos app, Command callback) {

        this.app = app;

        this.callback = callback;

        Anchor close = new Anchor("close");

        close.addStyleName("close");

        close.addClickHandler(new ClickHandler() {

            @Override

            public void onClick(ClickEvent event) {

                hide();

            }

        });

        setGlassEnabled(true);

        setStyleName("pithos-DialogBox");

        // Enable IE selection for the dialog (must disable it upon closing it)

        Pithos.enableIESelection();

        // Use this opportunity to set the dialog's caption.

        setText("Create group");

        // Outer contains inner and buttons

        VerticalPanel outer = new VerticalPanel();

        outer.add(close);

        // Inner contains generalPanel and permPanel

        inner = new VerticalPanel();

        inner.addStyleName("inner");

        VerticalPanel generalPanel = new VerticalPanel();

        FlexTable generalTable = new FlexTable();

        generalTable.setText(0, 0, "Name");

        generalTable.setWidget(0, 1, groupNameTextBox);

        generalTable.getFlexCellFormatter().setStyleName(0, 0, "props-labels");

        generalTable.getFlexCellFormatter().setStyleName(0, 1, "props-values");

        generalTable.setCellSpacing(4);

        generalPanel.add(generalTable);

        inner.add(generalPanel);

        outer.add(inner);

        // Create the 'Create/Update' button, along with a listener that hides the dialog

        // when the button is clicked and quits the application.

        String okLabel = "Create";

        final Button ok = new Button(okLabel, new ClickHandler() {

            @Override

            public void onClick(ClickEvent event) {

                createGroup();

                closeDialog();

            }

        });

        ok.addStyleName("button");

        outer.add(ok);

        outer.setCellHorizontalAlignment(inner, HasHorizontalAlignment.ALIGN_CENTER);

        setWidget(outer);

    }

    @Override

    public void center() {

        super.center();

        groupNameTextBox.setFocus(true);

    }

    @Override

    protected void onPreviewNativeEvent(NativePreviewEvent preview) {

        super.onPreviewNativeEvent(preview);

        NativeEvent evt = preview.getNativeEvent();

        if(evt.getType().equals(KeyDownEvent.getType().getName()))

        // Use the popup's key preview hooks to close the dialog when either

        // enter or escape is pressed.

        {

            switch(evt.getKeyCode()) {

                case KeyCodes.KEY_ENTER:

                    createGroup();

                    closeDialog();

                    break;

                case KeyCodes.KEY_ESCAPE:

                    closeDialog();

                    break;

            }

        }

    }

    /**

     * Enables IE selection prevention and hides the dialog

     * (we disable the prevention on creation of the dialog)

     */

    public void closeDialog() {

        Pithos.preventIESelection();

        hide();

        if(callback != null) {

            callback.execute();

        }

    }

    /**

     * Generate an RPC request to create a new folder.

     */

    void createGroup() {

        final String groupName = groupNameTextBox.getText().trim();

        if(groupName.length() == 0) {

            return;

        }

        Group group = app.addGroup(groupName);

        new AddUserCommand(app, null, group).execute();

    }

}