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.core.client.GWT;

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

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.event.dom.client.KeyDownEvent;

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

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

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 gr.grnet.pithos.web.client.grouptree.User;

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

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

/**

 * The 'Folder properties' dialog box implementation.

 */

public class AddUserDialog extends DialogBox {

    protected Pithos app;

    Group group;

    /**

     * The widget that holds the folderName of the folder.

     */

    TextBox userDisplayNameTextBox = new TextBox();

    final VerticalPanel inner;

    /**

     * The widget's constructor.

     */

    public AddUserDialog(final Pithos app, Group _group) {

        this.app = app;

        this.group = _group;

        Anchor close = new Anchor("close");

        close.addStyleName("close");

        close.addClickHandler(new ClickHandler() {

            @Override

            public void onClick(ClickEvent event) {

                hide();

            }

        });

        setGlassEnabled(true);

        setStyleName("pithos-DialogBox");

        // Enable IE selection for the dialog (must disable it upon closing it)

        Pithos.enableIESelection();

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

        setText("Add user");

        // Outer contains inner and buttons

        VerticalPanel outer = new VerticalPanel();

        outer.add(close);

        // Inner contains generalPanel and permPanel

        inner = new VerticalPanel();

        inner.addStyleName("inner");

        VerticalPanel generalPanel = new VerticalPanel();

        FlexTable generalTable = new FlexTable();

        generalTable.setText(0, 0, "Username");

        generalTable.setWidget(0, 1, userDisplayNameTextBox);

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

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

        generalTable.setCellSpacing(4);

        generalPanel.add(generalTable);

        inner.add(generalPanel);

        outer.add(inner);

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

        // when the button is clicked and quits the application.

        String okLabel = "Create";

        final Button ok = new Button(okLabel, new ClickHandler() {

            @Override

            public void onClick(ClickEvent event) {

                addUser();

                closeDialog();

            }

        });

        ok.addStyleName("button");

        outer.add(ok);

        outer.setCellHorizontalAlignment(inner, HasHorizontalAlignment.ALIGN_CENTER);

        setWidget(outer);

    }

    @Override

    public void center() {

        super.center();

        userDisplayNameTextBox.setFocus(true);

    }

    @Override

    protected void onPreviewNativeEvent(NativePreviewEvent preview) {

        super.onPreviewNativeEvent(preview);

        NativeEvent evt = preview.getNativeEvent();

        if(evt.getType().equals(KeyDownEvent.getType().getName()))

        // 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:

                    addUser();

                    closeDialog();

                    break;

                case KeyCodes.KEY_ESCAPE:

                    closeDialog();

                    break;

            }

        }

    }

    /**

     * Enables IE selection prevention and hides the dialog

     * (we disable the prevention on creation of the dialog)

     */

    public void closeDialog() {

        Pithos.preventIESelection();

        hide();

    }

    /**

     * Generate an RPC request to create a new folder.

     */

    void addUser() {

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

        if(userDisplayName.length() == 0) {

            return;

        }

        if(!Const.EMAIL_REGEX.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) {

            doAddUser(userID, userDisplayName);

        }

        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.getUserID(userDisplayName);

                    if(userID != null) {

                        doAddUser(userID, userDisplayName);

                    }

                    else {

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

                    }

                }

            }.scheduleDeferred();

        }

    }

    private void doAddUser(String userID, String userDisplayName) {

        final User newUser = new User(userID, userDisplayName, group.getName());

        app.LOG("doAddUser() ", newUser);

        group.addUser(newUser);

        final String path = "?update=";

        PostRequest updateGroup = new PostRequest(app, app.getApiPath(), app.getUserID(), path) {

            @Override

            public void onSuccess(Resource result) {

                app.updateGroupNode(group);

            }

            @Override

            public void onError(Throwable t) {

                GWT.log("", t);

                app.setError(t);

                if(t instanceof RestException) {

                    app.displayError("Unable to update group:" + ((RestException) t).getHttpStatusText());

                }

                else {

                    app.displayError("System error updating group:" + t.getMessage());

                }

            }

            @Override

            protected void onUnauthorized(Response response) {

                app.sessionExpired();

            }

        };

        updateGroup.setHeader(Const.X_AUTH_TOKEN, app.getUserToken());

        final String groupMembers = group.encodeUserIDsForXAccountGroup();

        updateGroup.setHeader(Const.X_ACCOUNT_GROUP_ + URL.encodePathSegment(group.getName()), groupMembers);

        Scheduler.get().scheduleDeferred(updateGroup);

    }

}