Synnefo » Pithos

/*

 * Copyright 2008, 2009 Electronic Business Systems Ltd.

 *

 * This file is part of GSS.

 *

 * GSS is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * GSS is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with GSS.  If not, see <http://www.gnu.org/licenses/>.

 */

package gr.grnet.pithos.web.client;

import gr.grnet.pithos.web.client.rest.PostCommand;

import gr.grnet.pithos.web.client.rest.RestException;

import com.google.gwt.core.client.GWT;

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.http.client.URL;

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

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

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

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

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

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

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

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

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

/**

 * @author kman

 */

public class GroupPropertiesDialog extends DialogBox {

        /**

         * The widget that holds the folderName of the folder.

         */

        private TextBox groupName = new TextBox();

        /**

         * A flag that denotes whether the dialog will be used to create or modify a

         * folder.

         */

        private final boolean create;

        /**

         * The widget's constructor.

         *

         * @param _create true if the dialog is displayed for creating a new

         *            sub-folder of the selected folder, false if it is displayed

         *            for modifying the selected folder

         */

        public GroupPropertiesDialog(final boolean _create) {

                setAnimationEnabled(true);

                create = _create;

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

                if (create)

                        setText("Create Group");

                else

                        setText("Group properties");

                final VerticalPanel panel = new VerticalPanel();

                setWidget(panel);

                groupName.getElement().setId("groupDialog.textBox.name");

                final Grid generalTable = new Grid(1, 2);

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

                generalTable.setWidget(0, 1, groupName);

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

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

                generalTable.setCellSpacing(4);

                panel.add(generalTable);

                final HorizontalPanel buttons = new HorizontalPanel();

                final Button ok = new Button("OK", new ClickHandler() {

                        @Override

                        public void onClick(ClickEvent event) {

                                createGroup(groupName.getText());

                                hide();

                        }

                });

                ok.getElement().setId("groupDialog.button.ok");

                buttons.add(ok);

                buttons.setCellHorizontalAlignment(ok, HasHorizontalAlignment.ALIGN_CENTER);

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

                // dialog

                // when the button is clicked.

                final Button cancel = new Button("Cancel", new ClickHandler() {

                        @Override

                        public void onClick(ClickEvent event) {

                                hide();

                        }

                });

                cancel.getElement().setId("groupDialog.button.cancel");

                buttons.add(cancel);

                buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);

                buttons.setSpacing(8);

                buttons.addStyleName("pithos-TabPanelBottom");

                panel.add(buttons);

                panel.setCellHorizontalAlignment(buttons, HasHorizontalAlignment.ALIGN_CENTER);

                //panel.addStyleName("pithos-DialogBox");

                panel.addStyleName("pithos-TabPanelBottom");

        }

        @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("keydown"))

                        // 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:

                                        hide();

                                        createGroup( groupName.getText());

                                        break;

                                case KeyCodes.KEY_ESCAPE:

                                        hide();

                                        break;

                        }

        }

        /**

         * Generate an RPC request to create a new group.

         *

         * @param userId the ID of the user whose namespace will be searched for

         *            groups

         * @param aGroupName the name of the group to create

         */

        private void createGroup(String aGroupName) {

                if (aGroupName == null || aGroupName.length() == 0) {

                        GSS.get().displayError("Empty group name!");

                        return;

                }

                GWT.log("createGroup(" + aGroupName + ")", null);

                PostCommand cg = new PostCommand(GSS.get().getCurrentUserResource().getGroupsPath()+"?name="+URL.encodeComponent(aGroupName), "", 201){

                        @Override

                        public void onComplete() {

                                GSS.get().getGroups().updateGroups();

                                GSS.get().showUserList();

                        }

                        @Override

                        public void onError(Throwable t) {

                                GWT.log("", t);

                                if(t instanceof RestException){

                                        int statusCode = ((RestException)t).getHttpStatusCode();

                                        if(statusCode == 405)

                                                GSS.get().displayError("You don't have the necessary permissions");

                                        else if(statusCode == 404)

                                                GSS.get().displayError("Resource does not exist");

                                        else if(statusCode == 409)

                                                GSS.get().displayError("A group with the same name already exists");

                                        else if(statusCode == 413)

                                                GSS.get().displayError("Your quota has been exceeded");

                                        else

                                                GSS.get().displayError("Unable to create group:"+((RestException)t).getHttpStatusText());

                                }

                                else

                                        GSS.get().displayError("System error creating group:"+t.getMessage());

                        }

                };

                DeferredCommand.addCommand(cg);

        }

}