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.http.client.URL;

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

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

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

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

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.UrlBuilder;

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 java.util.Map;

/**

 * UI for the "Share" command.

 */

public class FileShareDialog extends AbstractPropertiesDialog {

    // For public sharing

        private final HorizontalPanel publicPathPanel = new HorizontalPanel();

        private final TextBox publicPathText = new TextBox();

    // For private sharing

    private final HorizontalPanel privatePathPanel = new HorizontalPanel();

    private final TextBox privatePathText = new TextBox();

    private final VerticalPanel privatePermSuperPanel = new VerticalPanel();

    private PermissionsList permList;

        /**

         * An image bundle for this widgets images.

         */

        public interface PublicSharingImages 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/editdelete.png")

                ImageResource delete();

    }

    public interface PrivateSharingImages 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();

    }

    private final File file;

    private final PublicSharingImages publicSharingImages = GWT.create(PublicSharingImages.class);

    private final PrivateSharingImages privateSharingImages = GWT.create(PrivateSharingImages.class);

        /**

         * The widget's constructor.

         */

        public FileShareDialog(Pithos app, File file) {

        super(app);

        this.file = file;

                Anchor close = new Anchor("close");

                close.addStyleName("close");

                close.addClickHandler(new ClickHandler() {

                        @Override

                        public void onClick(ClickEvent event) {

                                hide();

                        }

                });

                // Set the dialog's caption.

                setText("Share");

                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(createMainPanel());

        outer.add(inner);

                final Button ok = new Button("OK", 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 boolean IamOwner() {

        return file.getOwnerID().equals(app.getUserID());

    }

    private void populatePublicSharingPanel(VerticalPanel publicSharingPanel) {

        if(IamOwner()) {

            final HorizontalPanel publicCheckPanel = new HorizontalPanel();

            publicCheckPanel.setSpacing(8);

            // Check box header

            final CheckBox publicCheckBox = new CheckBox();

            Label publicCheckTitle = new InlineHTML("<b>Public on the Internet</b>");

            Label publicCheckInfo = new Label("Anyone who has the public link can access. No sign-in required.", true);

            publicCheckBox.setValue(isFilePubliclyShared());

            publicCheckBox.addClickHandler(new ClickHandler() {

                @Override

                public void onClick(ClickEvent event) {

                    final Boolean published;

                    if(publicCheckBox.getValue() != file.isPublished() && IamOwner()) {

                        published = publicCheckBox.getValue();

                    }

                    else {

                        published = Boolean.FALSE;

                    }

                    updateMetaDataForPublicSharing(published);

                }

            });

            publicCheckPanel.add(publicCheckBox);

            publicCheckPanel.add(publicCheckTitle);

            publicCheckPanel.add(publicCheckInfo);

            // Public Link

            publicPathPanel.setVisible(false);

            publicPathPanel.setWidth(Const.PERCENT_100);

            publicPathPanel.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_LEFT);

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

            publicPathPanel.setSpacing(8);

            publicPathPanel.addStyleName("pithos-TabPanelBottom");

            publicPathText.setWidth(Const.PERCENT_100);

            publicPathText.addClickHandler(new ClickHandler() {

                @Override

                public void onClick(ClickEvent event) {

                    Pithos.enableIESelection();

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

                    Pithos.preventIESelection();

                }

            });

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

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

            publicPathText.setReadOnly(true);

            publicPathPanel.add(publicPathText);

            publicSharingPanel.add(publicCheckPanel);

            publicSharingPanel.add(publicPathPanel);

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

                @Override

                public void execute() {

                    showLinkForPublicSharing();

                }

            });

        }

    }

    private void populatePrivateSharingPanel(VerticalPanel privateSharingPanel) {

        final HorizontalPanel privateCheckPanel = new HorizontalPanel();

        final VerticalPanel privatePermPanel = new VerticalPanel();

        final HorizontalPanel permButtons = new HorizontalPanel();

        privateCheckPanel.setSpacing(8);

        privatePermPanel.setVisible(isFilePrivatelyShared());

        permButtons.setSpacing(8);

        // Check box header

        final CheckBox privateCheckBox = new CheckBox();

        final Label privateCheckTitle = new  InlineHTML("<b>Private sharing</b>");

        final Label privateCheckInfo = new Label("Only people explicitly granted permission can access. Sign-in required.", true);

        privateCheckBox.setValue(isFilePrivatelyShared());

        privateCheckBox.addClickHandler(new ClickHandler() {

            @Override

            public void onClick(ClickEvent event) {

                if(isFilePrivatelyShared()) {

                    // ignore the click, set it always to "checked"

                    privateCheckBox.setValue(true);

                    // show permissions

                    privatePermPanel.setVisible(true);

                }

                else {

                    // This is the value *after* the click is applied :)

                    boolean isChecked = privateCheckBox.getValue();

                    privatePermPanel.setVisible(isChecked);

                }

            }

        });

        privateCheckPanel.add(privateCheckBox);

        privateCheckPanel.add(privateCheckTitle);

        privateCheckPanel.add(privateCheckInfo);

        // Permission list

        permList = new PermissionsList(app, privateSharingImages, file.getPermissions(), file.getOwnerID(), false, new Command() {

            @Override

            public void execute() {

                updateMetaDataForPrivateSharing();

            }

        });

        // Permission Add buttons

        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) {

                if (app.getAccount().getGroups().isEmpty()) {

                    new GroupCreateDialog(app, new Command() {

                        @Override

                        public void execute() {

                            if (app.getAccount().getGroups().isEmpty()) {

                                return;

                            }

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

                            dlg.center();

                            permList.updatePermissionTable();

                        }

                    }).center();

                }

                else {

                    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);

        privatePermPanel.add(permList);

        privatePermPanel.add(permButtons);

        // Private Link

        privatePathPanel.setVisible(false);

        privatePathPanel.setWidth(Const.PERCENT_100);

        privatePathPanel.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_LEFT);

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

        privatePathPanel.setSpacing(8);

        privatePathPanel.addStyleName("pithos-TabPanelBottom");

        privatePathText.setWidth(Const.PERCENT_100);

        privatePathText.addClickHandler(new ClickHandler() {

            @Override

            public void onClick(ClickEvent event) {

                Pithos.enableIESelection();

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

                Pithos.preventIESelection();

            }

        });

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

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

        privatePathText.setWidth(Const.PERCENT_100);

        privatePathText.setReadOnly(true);

        privatePathPanel.add(privatePathText);

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

            @Override

            public void execute() {

                showLinkForPrivateSharing();

            }

        });

        privateSharingPanel.add(privateCheckPanel);

        privateSharingPanel.add(privatePermPanel);

        privateSharingPanel.add(privatePathPanel);

    }

    private Panel createMainPanel() {

        VerticalPanel panelAll = new VerticalPanel();

        VerticalPanel panelPublic = new VerticalPanel();

        VerticalPanel panelPrivate = new VerticalPanel();

        populatePrivateSharingPanel(panelPrivate);

        populatePublicSharingPanel(panelPublic);

        panelAll.add(panelPrivate);

        panelAll.add(panelPublic);

        return panelAll;

    }

    private boolean isFilePubliclyShared() {

        return file.isPublished();

    }

    private boolean isFilePrivatelyShared() {

        return file.isShared();

    }

    private void showLinkForPublicSharing() {

                if (isFilePubliclyShared()) {

                        UrlBuilder b = Window.Location.createUrlBuilder();

                        b.setPath(file.getPublicUri());

                        publicPathText.setText(b.buildString());

                publicPathPanel.setVisible(true);

                }

                else {

                        publicPathPanel.setVisible(false);

                }

    }

    private void showLinkForPrivateSharing() {

        if (isFilePrivatelyShared()) {

            UrlBuilder b = Window.Location.createUrlBuilder();

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

            String href = Window.Location.getHref();

            boolean hasParameters = href.contains(Const.QUESTION_MARK);

            privatePathText.setText(href + (hasParameters ? Const.AMPERSAND : Const.QUESTION_MARK) + Const.GOTO_EQ + b.buildString());

            privatePathPanel.setVisible(true);

        }

        else {

            privatePathPanel.setVisible(false);

        }

    }

        protected void updateMetaDataForPublicSharing(String api, String owner, final String path, final Boolean published) {

        if (published != 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.getOwnerID(), path, file) {

                                                @Override

                                                public void onSuccess(File _result) {

                                                        showLinkForPublicSharing();

                                                        if (!app.isMySharedSelected()) {

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

                                                                        @Override

                                                                        public void execute() {

                                                                                app.updateMySharedRoot();

                                                                        }

                                                                }, true);

                            }

                                                        else {

                                                                app.updateSharedFolder(file.getParent(), true);

                            }

                                                }

                                                @Override

                                                public void onError(Throwable t) {

                                                        app.setError(t);

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

                                                }

                                                @Override

                                                protected void onUnauthorized(Response response) {

                                                        app.sessionExpired();

                                                }

                                        };

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

                                        Scheduler.get().scheduleDeferred(headFile);

                }

                @Override

                public void onError(Throwable t) {

                                        app.setError(t);

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

                }

                                @Override

                                protected void onUnauthorized(Response response) {

                                        app.sessionExpired();

                                }

            };

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

            updateFile.setHeader(Const.X_OBJECT_PUBLIC, published.toString());

            Scheduler.get().scheduleDeferred(updateFile);

        }

        else if (!app.isMySharedSelected())

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

                                @Override

                                public void execute() {

                                        if (file.isSharedOrPublished()) {

                        app.updateMySharedRoot();

                    }

                                }

                        }, true);

        else

                app.updateSharedFolder(file.getParent(), true);

    }

    protected void updateMetaDataForPublicSharing(Boolean published) {

        updateMetaDataForPublicSharing(

            app.getApiPath(),

            app.getUserID(),

            file.getUri() + Const.QUESTION_MARK_UPDATE_EQ,

            published

        );

    }

    protected void updateMetaDataForPrivateSharing(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.getOwnerID(), path, file) {

                        @Override

                        public void onSuccess(File _result) {

                            showLinkForPrivateSharing();

                            if (!app.isMySharedSelected())

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

                                    @Override

                                    public void execute() {

                                        app.updateMySharedRoot();

                                    }

                                }, true);

                            else

                                app.updateSharedFolder(file.getParent(), true);

                        }

                        @Override

                        public void onError(Throwable t) {

                            app.setError(t);

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

                        }

                        @Override

                        protected void onUnauthorized(Response response) {

                            app.sessionExpired();

                        }

                    };

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

                    Scheduler.get().scheduleDeferred(headFile);

                }

                @Override

                public void onError(Throwable t) {

                    app.setError(t);

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

                }

                @Override

                protected void onUnauthorized(Response response) {

                    app.sessionExpired();

                }

            };

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

            String readPermHeader = Const.READ_EQ;

            String writePermHeader = Const.WRITE_EQ;

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

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

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

                    readPermHeader += u + Const.COMMA;

                }

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

                    writePermHeader += u + Const.COMMA;

                }

            }

            if (readPermHeader.endsWith(Const.EQ)) {

                readPermHeader = "";

            }

            else if (readPermHeader.endsWith(Const.COMMA)) {

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

            }

            if (writePermHeader.endsWith(Const.EQ)) {

                writePermHeader = "";

            }

            else if (writePermHeader.endsWith(Const.COMMA)) {

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

            }

            String permHeader = readPermHeader +

                ((readPermHeader.length()  > 0 && writePermHeader.length() > 0) ?  Const.SEMI : "") + writePermHeader;

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

                permHeader=Const.TILDE;

            }

            else {

                permHeader = URL.encodePathSegment(permHeader);

            }

            updateFile.setHeader(Const.X_OBJECT_SHARING, permHeader);

            Scheduler.get().scheduleDeferred(updateFile);

        }

        else if (!app.isMySharedSelected()) {

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

                @Override

                public void execute() {

                    if (file.isSharedOrPublished())

                        app.updateMySharedRoot();

                }

            }, true);

        }

        else {

            app.updateSharedFolder(file.getParent(), true);

        }

    }

    protected void updateMetaDataForPrivateSharing() {

        updateMetaDataForPrivateSharing(

            app.getApiPath(),

            app.getUserID(),

            file.getUri() + Const.QUESTION_MARK_UPDATE_EQ,

            permList.getPermissions()

        );

    }

    @Override

        protected void onPreviewNativeEvent(NativePreviewEvent preview) {

            super.onPreviewNativeEvent(preview);

            NativeEvent evt = preview.getNativeEvent();

            if (evt.getType().equals(Const.EVENT_TYPE_KEYDOWN) &&

            evt.getKeyCode() == KeyCodes.KEY_ENTER) {

            closeDialog();

        }

        }

    @Override

    protected boolean accept() {

        return true;

    }

}