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

 * conditions are met:

 *

 *   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,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

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

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

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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

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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 gr.grnet.pithos.web.client.foldertree.Folder;

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.Event.NativePreviewEvent;

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

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

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

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

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

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

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

/**

 * The 'Folder properties' dialog box implementation.

 */

public class GroupCreateDialog extends DialogBox {

    protected Pithos app;

        /**

         * The widget that holds the folderName of the folder.

         */

        TextBox groupName = new TextBox();

        final VerticalPanel inner;

        /**

         * The widget's constructor.

         */

        public GroupCreateDialog(final Pithos app) {

        this.app = app;

                Anchor close = new Anchor();

                close.addStyleName("close");

                close.addClickHandler(new ClickHandler() {

                        @Override

                        public void onClick(ClickEvent event) {

                                hide();

                        }

                });

                setAnimationEnabled(true);

                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, groupName);

        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();

                groupName.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();

        }

        /**

         * Generate an RPC request to create a new folder.

         */

        private void createGroup() {

                String name = groupName.getText().trim();

                if (name.length() == 0)

                        return;

                app.addGroup(name);

        }

}