Synnefo » Pithos Web Client

/*

 * Copyright 2011-2013 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.event.dom.client.ClickEvent;

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

import com.google.gwt.event.logical.shared.ValueChangeEvent;

import com.google.gwt.event.logical.shared.ValueChangeHandler;

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

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

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

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

import java.util.HashMap;

import java.util.Map;

public class PermissionsList extends Composite {

    Map<String, Boolean[]> permissions = null;

    final FileShareDialog.PrivateSharingImages images;

    final VerticalPanel permPanel = new VerticalPanel();

    final FlexTable permTable = new FlexTable();

    final String owner;

    protected boolean hasChanges = false;

    private boolean readonly = false;

    Command changePermissionsCallback;

    private final Pithos app;

    public PermissionsList(

        Pithos app,

        final FileShareDialog.PrivateSharingImages theImages,

        Map<String, Boolean[]> thePermissions,

        String theOwner,

        boolean inheritsPermissions,

        Command _changePermissionsCallback

    ) {

        this.app = app;

        changePermissionsCallback = _changePermissionsCallback;

        images = theImages;

        owner = theOwner;

        permissions = new HashMap<String, Boolean[]>(thePermissions);

        updatePermissionsHeader();

        permPanel.add(permTable);

        permPanel.addStyleName("pithos-TabPanelBottom");

        initWidget(permPanel);

        updatePermissionTable();

    }

    private void updatePermissionsHeader() {

        if(hasPermissions()) {

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

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

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

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

            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");

        }

        else {

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

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

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

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

        }

    }

    public boolean hasPermissions() {

        return permissionCount() > 0;

    }

    public int permissionCount() {

        return permissions == null

            ? 0

            : permissions.size();

    }

    public boolean hasChanges() {

        return hasChanges;

    }

    /**

     * Retrieve the permissions.

     *

     * @return the permissions

     */

    public Map<String, Boolean[]> getPermissions() {

        return permissions;

    }

    public void addPermission(String userID, boolean read, boolean write) {

        Pithos.LOG("PermissionsList::addPermission(userID=", userID, ", read=", read, ", write=", write, ")");

        permissions.put(userID, new Boolean[]{Boolean.valueOf(read), Boolean.valueOf(write)});

        hasChanges = true;

        updatePermissionTable();

        if(changePermissionsCallback != null) {

            changePermissionsCallback.execute();

        }

    }

    private boolean isGroup(String userID) {

        return userID.contains(Const.COLON);

    }

    /**

     * Shows the permission table

     */

    void updatePermissionTable() {

        int i = 1;

        final int ii = i;

        for(int j = 1; j < permTable.getRowCount(); j++) {

            permTable.removeRow(j);

        }

        updatePermissionsHeader();

        for(final String userID : permissions.keySet()) {

            if(!isGroup(userID)) {

                final String displayName = app.getDisplayNameForUserID(userID);

                if(displayName != null) {

                    permTable.setHTML(

                        i,

                        0,

                        Const.inSpan(

                            AbstractImagePrototype.create(

                                images.permUser()).getHTML() +

                                Const.HTML_NBSP +

                                displayName

                        )

                    );

                }

                else {

                    new UpdateUserCatalogs(app, userID) {

                        @Override

                        public void onSuccess(UserCatalogs requestedUserCatalogs, UserCatalogs updatedUserCatalogs) {

                            final String displayName = updatedUserCatalogs.getDisplayName(userID);

                            permTable.setHTML(

                                ii,

                                0,

                                Const.inSpan(

                                    AbstractImagePrototype.create(

                                        images.permUser()).getHTML() +

                                        Const.HTML_NBSP +

                                        displayName

                                )

                            );

                        }

                    }.scheduleDeferred();

                }

            }

            else {

                permTable.setHTML(

                    i,

                    0,

                    Const.inSpan(

                        AbstractImagePrototype.create(

                            images.permGroup()).getHTML() +

                            Const.HTML_NBSP +

                            userID.split(Const.COLON)[1].trim()

                    )

                );

            }

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

            Boolean[] userPerms = permissions.get(userID);

            Boolean readP = userPerms[0];

            Boolean writeP = userPerms[1];

            RadioButton read = new RadioButton("permissions" + i);

            read.setValue(readP != null ? readP : false);

            permTable.setWidget(i, 1, read);

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

            RadioButton write = new RadioButton("permissions" + i);

            write.setValue(writeP != null ? writeP : false);

            permTable.setWidget(i, 2, write);

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

            if(!readonly) {

                read.addValueChangeHandler(new ValueChangeHandler<Boolean>() {

                    @Override

                    public void onValueChange(ValueChangeEvent<Boolean> booleanValueChangeEvent) {

                        Boolean[] ps = permissions.get(userID);

                        ps[0] = booleanValueChangeEvent.getValue();

                        ps[1] = !booleanValueChangeEvent.getValue();

                        hasChanges = true;

                        if(changePermissionsCallback != null) {

                            changePermissionsCallback.execute();

                        }

                    }

                });

                write.addValueChangeHandler(new ValueChangeHandler<Boolean>() {

                    @Override

                    public void onValueChange(ValueChangeEvent<Boolean> booleanValueChangeEvent) {

                        Boolean[] ps = permissions.get(userID);

                        ps[0] = !booleanValueChangeEvent.getValue();

                        ps[1] = booleanValueChangeEvent.getValue();

                        hasChanges = true;

                        if(changePermissionsCallback != null) {

                            changePermissionsCallback.execute();

                        }

                    }

                });

                Anchor removeButton = new Anchor("remove");

                removeButton.addStyleName(Pithos.resources.pithosCss().commandAnchor());

                removeButton.addClickHandler(new ClickHandler() {

                    @Override

                    public void onClick(ClickEvent event) {

                        permissions.remove(userID);

                        updatePermissionTable();

                        hasChanges = true;

                        if(changePermissionsCallback != null) {

                            changePermissionsCallback.execute();

                        }

                    }

                });

                permTable.setWidget(i, 3, removeButton);

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

            }

            else {

                read.setEnabled(false);

                write.setEnabled(false);

            }

            i++;

        }

    }

}