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

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

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

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

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * 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.http.client.Request;

import com.google.gwt.http.client.Response;

import com.google.gwt.json.client.JSONObject;

import gr.grnet.pithos.web.client.catalog.GetUserCatalogs;

import gr.grnet.pithos.web.client.catalog.UserCatalogs;

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

import java.util.List;

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.regexp.shared.RegExp;

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.ListBox;

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

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

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

public class PermissionsAddDialog extends DialogBox {

    final static RegExp EmailValidator = RegExp.compile("^[A-Z0-9._%+-]+@[A-Z0-9.-]+[.][A-Z]{2,4}$", "i");

        private TextBox userBox = new TextBox();

        private ListBox groupBox = new ListBox();

        private RadioButton read = new RadioButton("permissions");

        private RadioButton write = new RadioButton("permissions");

        private PermissionsList permList;

        boolean userAdd;

    private Pithos app;

        public PermissionsAddDialog(Pithos _app, List<Group> _groups, PermissionsList _permList, boolean _userAdd) {

        app = _app;

                userAdd = _userAdd;

                permList = _permList;

                Anchor close = new Anchor("close");

                close.addStyleName("close");

                close.addClickHandler(new ClickHandler() {

                        @Override

                        public void onClick(ClickEvent event) {

                                hide();

                        }

                });

                setText("Add permission");

                setStyleName("pithos-DialogBox");

        final VerticalPanel panel = new VerticalPanel();

        panel.add(close);

        VerticalPanel inner = new VerticalPanel();

                inner.addStyleName("inner");

        final FlexTable permTable = new FlexTable();

        permTable.setText(0, 0, "Users/Groups");

        permTable.setText(0, 1, "Read Only");

        permTable.setText(0, 2, "Read/Write");

        permTable.getFlexCellFormatter().setStyleName(0, 0, "props-toplabels");

        permTable.getFlexCellFormatter().setStyleName(0, 1, "props-toplabels");

        permTable.getFlexCellFormatter().setStyleName(0, 2, "props-toplabels");

        if (userAdd) {

            permTable.setWidget(1, 0, userBox);

        }

        else {

            for (Group group : _groups) {

                groupBox.addItem(group.getName(), group.getName());

            }

            permTable.setWidget(1, 0, groupBox);

        }

        read.setValue(true);

        permTable.setWidget(1, 1, read);

        permTable.setWidget(1, 2, write);

        permTable.getFlexCellFormatter().setStyleName(1, 0, "props-labels");

        permTable.getFlexCellFormatter().setHorizontalAlignment(1, 1, HasHorizontalAlignment.ALIGN_CENTER);

        permTable.getFlexCellFormatter().setHorizontalAlignment(1, 2, HasHorizontalAlignment.ALIGN_CENTER);

        inner.add(permTable);

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

            @Override

            public void onClick(ClickEvent event) {

                addPermission();

                hide();

            }

        });

        ok.addStyleName("button");

        inner.add(ok);

        panel.add(inner);

        panel.setCellHorizontalAlignment(inner, HasHorizontalAlignment.ALIGN_CENTER);

        setWidget(panel);

        }

        protected void addPermission() {

        final boolean readValue = read.getValue();

        final boolean writeValue = write.getValue();

        String selected = null;

                if (userAdd) {

                        final String userDisplayName = userBox.getText().trim();

                        addUserPermission(userDisplayName, readValue, writeValue);

            return;

                } else if (groupBox.getSelectedIndex() > -1) {

                        String groupName = groupBox.getValue(groupBox.getSelectedIndex());

                        selected = app.getUserID() + ":" + groupName;

                }

        if (permList.getPermissions().get(selected) != null) {

            return;

        }

        if (selected == null || selected.length() == 0 || selected.equals(app.getUserID() + ":")) {

                app.displayWarning("You have to select a username or group");

                return;

        }

                permList.addPermission(selected, readValue, writeValue);

        }

    private boolean alreadyHasPermission(String selected) {

        return permList.getPermissions().get(selected) != null;

    }

    private void addUserPermission(final String userDisplayName, final boolean readValue, final boolean writeValue) {

        if (!EmailValidator.test(userDisplayName)) {

            app.displayWarning("Username must be a valid email address");

            return;

        }

        // Now get the userID

        final String userID = app.getUserIDForDisplayName(userDisplayName);

        if(userID != null) {

            // Check if already have the permission

            if(!alreadyHasPermission(userID)) {

                permList.addPermission(userID, readValue, writeValue);

            }

        }

        else {

            // Must call server to obtain userID

            new GetUserCatalogs(app, null, Helpers.toList(userDisplayName)) {

                @Override

                public void onSuccess(Request request, Response response, JSONObject result, UserCatalogs userCatalogs) {

                    app.getUserCatalogs().updateFrom(userCatalogs);

                    final String userID = app.getUserIDForDisplayName(userDisplayName);

                    if(userID == null) {

                        app.displayWarning("Unknown user " + userDisplayName);

                    }

                    else if(!alreadyHasPermission(userID)) {

                        permList.addPermission(userID, readValue, writeValue);

                    }

                }

            }.scheduleDeferred();

        }

    }

        @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:

                                        addPermission();

                                        hide();

                                        break;

                                case KeyCodes.KEY_ESCAPE:

                                        hide();

                                        break;

                        }

        }

        @Override

        public void center() {

                super.center();

                if (userAdd)

                        userBox.setFocus(true);

        }

}