Synnefo

/*

 * 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.ebs.gss.client;

import gr.ebs.gss.client.FilePropertiesDialog.Images;

import gr.ebs.gss.client.rest.resource.PermissionHolder;

import java.util.HashSet;

import java.util.Set;

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

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

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

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

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

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

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

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

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

/**

 * @author kman

 *

 */

public class PermissionsList extends Composite {

        int selectedRow = -1;

        int permissionCount=-1;

        Set<PermissionHolder> permissions = null;

        final Images images;

        final VerticalPanel permPanel = new VerticalPanel();

        final FlexTable permTable = new FlexTable();

        final String owner;

        PermissionHolder toRemove = null;

        private boolean hasChanges = false;

        private boolean hasAddition = false;

        public PermissionsList(final Images theImages, Set<PermissionHolder> thePermissions, String anOwner){

                images = theImages;

                owner = anOwner;

                permissions =  new HashSet<PermissionHolder>();

                permissions.addAll(thePermissions);

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

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

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

                permTable.setText(0, 3, "Modify Access");

                permTable.setText(0, 4, "");

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

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

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

                permTable.getFlexCellFormatter().setStyleName(0, 3, "props-toplabels");

                permPanel.add(permTable);

                permPanel.addStyleName("gss-TabPanelBottom");

                initWidget(permPanel);

                updateTable();

        }

        public boolean hasChanges(){

                return hasChanges || hasAddition;

        }

        public void updateTable(){

                int i=1;

                if(toRemove != null){

                        permissions.remove(toRemove);

                        toRemove = null;

                }

                for(final PermissionHolder dto : permissions){

                        PushButton removeButton = new PushButton(AbstractImagePrototype.create(images.delete()).createImage(), new ClickHandler() {

                                @Override

                                public void onClick(ClickEvent event) {

                                        toRemove = dto;

                                        updateTable();

                                        hasChanges = true;

                                }

                        });

                        if(dto.getUser() !=null)

                                if(dto.getUser()!=null && dto.getUser().equals(owner)){

                                        permTable.setHTML(i, 0, "<span>" + AbstractImagePrototype.create(images.permUser()).getHTML() + "&nbsp;Owner</span>");

                                        removeButton.setVisible(false);

                                }

                                else

                                        permTable.setHTML(i, 0, "<span>" + AbstractImagePrototype.create(images.permUser()).getHTML() + "&nbsp;"+ GSS.get().getUserFullName(dto.getUser()) +"</span>");

                        else if(dto.getGroup() != null)

                                permTable.setHTML(i, 0, "<span>" + AbstractImagePrototype.create(images.permGroup()).getHTML() + "&nbsp;"+dto.getGroup()+"</span>");

                        CheckBox read = new CheckBox();

                        read.setValue(dto.isRead());

                        CheckBox write = new CheckBox();

                        write.setValue(dto.isWrite());

                        CheckBox modify = new CheckBox();

                        modify.setValue(dto.isModifyACL());

                        if (dto.getUser()!=null && dto.getUser().equals(owner)) {

                                read.setEnabled(false);

                                write.setEnabled(false);

                                modify.setEnabled(false);

                        }

                        permTable.setWidget(i, 1, read);

                        permTable.setWidget(i, 2, write);

                        permTable.setWidget(i, 3, modify);

                        permTable.setWidget(i, 4, removeButton);

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

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

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

                        permTable.getFlexCellFormatter().setHorizontalAlignment(i, 3, HasHorizontalAlignment.ALIGN_CENTER);

                        i++;

                }

                for(; i<permTable.getRowCount(); i++)

                        permTable.removeRow(i);

                hasChanges = false;

        }

        public void updatePermissionsAccordingToInput(){

                int i=1;

                for(PermissionHolder dto : permissions){

                        /*if(dto.getId() == null)

                                hasChanges =true;*/

                        CheckBox r = (CheckBox) permTable.getWidget(i, 1);

                        CheckBox w = (CheckBox) permTable.getWidget(i, 2);

                        CheckBox m = (CheckBox) permTable.getWidget(i, 3);

                        if(dto.isRead() != r.getValue() || dto.isWrite() != w.getValue() || dto.isModifyACL() != m.getValue())

                                hasChanges = true;

                        dto.setRead(r.getValue());

                        dto.setWrite(w.getValue());

                        dto.setModifyACL(m.getValue());

                        i++;

                }

        }

        /**

         * Retrieve the permissions.

         *

         * @return the permissions

         */

        public Set<PermissionHolder> getPermissions() {

                return permissions;

        }

        public void addPermission(PermissionHolder permission){

                permissions.add(permission);

                hasAddition = true;

        }

}