Synnefo » Pithos Web Client

/*

 * Copyright 2011-2013 GRNET S.A. All rights reserved.

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 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

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 *

 *   1. Redistributions of source code must retain the above

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 *      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,

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

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

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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.

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package gr.grnet.pithos.web.client;

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.*;

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

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

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

import java.util.List;

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 final PermissionsList permList;

    private final boolean isUser;

    private final Pithos app;

    public PermissionsAddDialog(Pithos app, List<Group> groups, PermissionsList permList, boolean isUser) {

        this.app = app;

        this.isUser = isUser;

        this.permList = permList;

        Anchor close = new Anchor("close");

        close.addStyleName("close");

        close.addClickHandler(new ClickHandler() {

            @Override

            public void onClick(ClickEvent event) {

                hide();

            }

        });

        final String dialogText = isUser ? Const.TXT_ADD_USER : Const.TXT_ADD_GROUP;

        setText(dialogText);

        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, isUser ? Const.TXT_USER : Const.TXT_USER);

        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(this.isUser) {

            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(isUser) {

            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.getIDForUserDisplayName(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 UpdateUserCatalogs(app, null, Helpers.toList(userDisplayName)) {

                @Override

                public void onSuccess(UserCatalogs requestedUserCatalogs, UserCatalogs updatedUserCatalogs) {

                    final String userID = updatedUserCatalogs.getID(userDisplayName);

                    if(userID == null) {

                        Pithos.LOG("PermissionsDialog::addUserPermission(), UpdateUserCatalogs() => Unknown user ", userDisplayName);

                        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(isUser) {

            userBox.setFocus(true);

        }

    }

}