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 gr.grnet.pithos.web.client.foldertree.File;

import gr.grnet.pithos.web.client.foldertree.Resource;

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

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

import java.util.Map;

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.http.client.Response;

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

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

import com.google.gwt.i18n.client.Dictionary;

import com.google.gwt.resources.client.ImageResource;

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

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

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.CheckBox;

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

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

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

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

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

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

/**

 * The 'File properties' dialog box implementation.

 *

 */

public class FilePermissionsDialog extends AbstractPropertiesDialog {

        protected PermissionsList permList;

        private HorizontalPanel pathPanel;

        private TextBox path;

        /**

         * An image bundle for this widgets images.

         */

        public interface Images extends MessagePanel.Images {

                @Source("gr/grnet/pithos/resources/edit_user.png")

                ImageResource permUser();

                @Source("gr/grnet/pithos/resources/groups22.png")

                ImageResource permGroup();

                @Source("gr/grnet/pithos/resources/delete.gif")

                ImageResource delete();

        }

        final File file;

    Images images = GWT.create(Images.class);

        /**

         * The widget's constructor.

         */

        public FilePermissionsDialog(Pithos _app, File _file) {

        super(_app);

        file = _file;

                Anchor close = new Anchor();

                close.addStyleName("close");

                close.addClickHandler(new ClickHandler() {

                        @Override

                        public void onClick(ClickEvent event) {

                                hide();

                        }

                });

                // Set the dialog's caption.

                setText("File permissions");

                setAnimationEnabled(true);

                setGlassEnabled(true);

                setStyleName("pithos-DialogBox");

                // Outer contains inner and buttons.

                final VerticalPanel outer = new VerticalPanel();

                outer.add(close);

                final FocusPanel focusPanel = new FocusPanel(outer);

                // Inner contains generalPanel and permPanel.

                inner = new VerticalPanel();

                inner.addStyleName("inner");

        inner.add(createSharingPanel());

        outer.add(inner);

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

                        @Override

                        public void onClick(ClickEvent event) {

                                closeDialog();

                        }

                });

                ok.addStyleName("button");

        outer.add(ok);

        outer.setCellHorizontalAlignment(inner, HasHorizontalAlignment.ALIGN_CENTER);

        focusPanel.setFocus(true);

        setWidget(outer);

        }

    private VerticalPanel createSharingPanel() {

        VerticalPanel permPanel = new VerticalPanel();

        permList = new PermissionsList(images, file.getPermissions(), file.getOwner(), false, new Command() {

                        @Override

                        public void execute() {

                                accept();

                        }

                });

        permPanel.add(permList);

        HorizontalPanel permButtons = new HorizontalPanel();

        final Button addUser = new Button("Add User", new ClickHandler() {

            @Override

            public void onClick(ClickEvent event) {

                PermissionsAddDialog dlg = new PermissionsAddDialog(app, app.getAccount().getGroups(), permList, true);

                dlg.center();

                permList.updatePermissionTable();

            }

        });

        addUser.addStyleName("button");

        permButtons.add(addUser);

        permButtons.setCellHorizontalAlignment(addUser, HasHorizontalAlignment.ALIGN_CENTER);

        Button add = new Button("Add Group", new ClickHandler() {

            @Override

            public void onClick(ClickEvent event) {

                PermissionsAddDialog dlg = new PermissionsAddDialog(app, app.getAccount().getGroups(), permList, false);

                dlg.center();

                permList.updatePermissionTable();

            }

        });

        add.addStyleName("button");

        permButtons.add(add);

        permButtons.setCellHorizontalAlignment(add, HasHorizontalAlignment.ALIGN_CENTER);

        permButtons.setSpacing(8);

        permButtons.addStyleName("pithos-TabPanelBottom");

        permPanel.add(permButtons);

        final Label readForAllNote = new Label("When this option is enabled, the file will be readable" +

                    " by everyone. By checking this option, you are certifying that you have the right to " +

                    "distribute this file and that it does not violate the Terms of Use.", true);

        readForAllNote.setStylePrimaryName("pithos-readForAllNote");

        pathPanel = new HorizontalPanel();

        pathPanel.setVisible(false);

        pathPanel.setWidth("100%");

        pathPanel.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_LEFT);

        pathPanel.add(new Label("Link"));

        pathPanel.setSpacing(8);

        pathPanel.addStyleName("pithos-TabPanelBottom");

        path = new TextBox();

        path.setWidth("100%");

        path.addClickHandler(new ClickHandler() {

            @Override

            public void onClick(ClickEvent event) {

                Pithos.enableIESelection();

                ((TextBox) event.getSource()).selectAll();

                Pithos.preventIESelection();

            }

        });

        path.setText(Window.Location.getHost() + file.getPublicUri());

        path.setTitle("Use this link for sharing the file via e-mail, IM, etc. (crtl-C/cmd-C to copy to system clipboard)");

        path.setWidth("100%");

        path.setReadOnly(true);

        pathPanel.add(path);

        permPanel.add(pathPanel);

        Scheduler.get().scheduleDeferred(new Command() {

                        @Override

                        public void execute() {

                                showLinkIfShared();

                        }

                });

        return permPanel;

    }

    void showLinkIfShared() {

                if (file.isShared()) {

                        UrlBuilder b = Window.Location.createUrlBuilder();

                        b.setPath(app.getApiPath() + file.getOwner() + file.getUri());

                        String href = Window.Location.getHref();

                        boolean hasParameters = href.contains("?");

                        path.setText(href + (hasParameters ? "&" : "?") + "goto=" + b.buildString());

                pathPanel.setVisible(true);

                }

                else {

                        pathPanel.setVisible(false);

                }

    }

        /**

         * Accepts any change and updates the file

         *

         */

        @Override

        protected void accept() {

        updateMetaData(app.getApiPath(), app.getUsername(), file.getUri() + "?update=", permList.getPermissions());

        }

        protected void updateMetaData(String api, String owner, final String path, final Map<String, Boolean[]> newPermissions) {

        if (newPermissions != null) {

            PostRequest updateFile = new PostRequest(api, owner, path) {

                @Override

                public void onSuccess(Resource result) {

                        HeadRequest<File> headFile = new HeadRequest<File>(File.class, app.getApiPath(), file.getOwner(), path, file) {

                                                @Override

                                                public void onSuccess(File _result) {

                                                        showLinkIfShared();

                                    app.updateFolder(file.getParent(), true, new Command() {

                                                                @Override

                                                                public void execute() {

                                                                        app.updateMySharedRoot();

                                                                }

                                                        }, true);

                                                }

                                                @Override

                                                public void onError(Throwable t) {

                                    GWT.log("", t);

                                                        app.setError(t);

                                    app.displayError("System error modifying file:" + t.getMessage());

                                                }

                                                @Override

                                                protected void onUnauthorized(Response response) {

                                                        app.sessionExpired();

                                                }

                                        };

                                        headFile.setHeader("X-Auth-Token", app.getToken());

                                        Scheduler.get().scheduleDeferred(headFile);

                }

                @Override

                public void onError(Throwable t) {

                    GWT.log("", t);

                                        app.setError(t);

                    app.displayError("System error modifying file:" + t.getMessage());

                }

                                @Override

                                protected void onUnauthorized(Response response) {

                                        app.sessionExpired();

                                }

            };

            updateFile.setHeader("X-Auth-Token", app.getToken());

            String readPermHeader = "read=";

            String writePermHeader = "write=";

            for (String u : newPermissions.keySet()) {

                Boolean[] p = newPermissions.get(u);

                if (p[0] != null && p[0])

                    readPermHeader += u + ",";

                if (p[1] != null && p[1])

                    writePermHeader += u + ",";

            }

            if (readPermHeader.endsWith("="))

                readPermHeader = "";

            else if (readPermHeader.endsWith(","))

                readPermHeader = readPermHeader.substring(0, readPermHeader.length() - 1);

            if (writePermHeader.endsWith("="))

                writePermHeader = "";

            else if (writePermHeader.endsWith(","))

                writePermHeader = writePermHeader.substring(0, writePermHeader.length() - 1);

            String permHeader = readPermHeader +  ((readPermHeader.length()  > 0 && writePermHeader.length() > 0) ?  ";" : "") + writePermHeader;

            if (permHeader.length() == 0)

                permHeader="~";

            else

                    permHeader = URL.encodePathSegment(permHeader);

            updateFile.setHeader("X-Object-Sharing", permHeader);

            Scheduler.get().scheduleDeferred(updateFile);

        }

        else

            app.updateFolder(file.getParent(), true, new Command() {

                                @Override

                                public void execute() {

                                        if (file.isSharedOrPublished())

                                                app.updateMySharedRoot();

                                }

                        }, true);

    }

        @Override

        protected void onPreviewNativeEvent(NativePreviewEvent preview) {

            super.onPreviewNativeEvent(preview);

            NativeEvent evt = preview.getNativeEvent();

            if (evt.getType().equals("keydown") && evt.getKeyCode() == KeyCodes.KEY_ENTER)

                                closeDialog();

        }

}