root / web_client / src / gr / grnet / pithos / web / client / GSS.java @ 1ac430a1
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/*
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* Copyright (c) 2011 Greek Research and Technology Network
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*/
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package gr.grnet.pithos.web.client; |
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import com.google.gwt.core.client.Scheduler; |
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import com.google.gwt.core.client.Scheduler.ScheduledCommand; |
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import com.google.gwt.user.client.ui.DockPanel; |
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import com.google.gwt.user.client.ui.HasVerticalAlignment; |
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import com.google.gwt.view.client.ListDataProvider; |
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import gr.grnet.pithos.web.client.clipboard.Clipboard; |
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import gr.grnet.pithos.web.client.commands.GetUserCommand; |
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import gr.grnet.pithos.web.client.foldertree.AccountResource; |
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import gr.grnet.pithos.web.client.foldertree.Folder; |
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import gr.grnet.pithos.web.client.foldertree.FolderTreeView; |
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import gr.grnet.pithos.web.client.foldertree.FolderTreeViewModel; |
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import gr.grnet.pithos.web.client.rest.GetRequest; |
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import gr.grnet.pithos.web.client.rest.RestException; |
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import gr.grnet.pithos.web.client.rest.resource.FileResource; |
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import gr.grnet.pithos.web.client.rest.resource.OtherUserResource; |
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import gr.grnet.pithos.web.client.rest.resource.RestResource; |
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import gr.grnet.pithos.web.client.rest.resource.RestResourceWrapper; |
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import gr.grnet.pithos.web.client.rest.resource.SharedResource; |
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import gr.grnet.pithos.web.client.rest.resource.TrashResource; |
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import gr.grnet.pithos.web.client.rest.resource.UserResource; |
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.Date; |
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import java.util.HashMap; |
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import java.util.Iterator; |
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import java.util.List; |
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import com.google.gwt.core.client.EntryPoint; |
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import com.google.gwt.core.client.GWT; |
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import com.google.gwt.event.logical.shared.ResizeEvent; |
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import com.google.gwt.event.logical.shared.ResizeHandler; |
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import com.google.gwt.event.logical.shared.SelectionEvent; |
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import com.google.gwt.event.logical.shared.SelectionHandler; |
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import com.google.gwt.http.client.URL; |
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import com.google.gwt.i18n.client.DateTimeFormat; |
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import com.google.gwt.resources.client.ClientBundle; |
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import com.google.gwt.resources.client.ImageResource; |
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import com.google.gwt.user.client.Command; |
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import com.google.gwt.user.client.Cookies; |
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import com.google.gwt.user.client.DOM; |
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import com.google.gwt.user.client.DeferredCommand; |
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import com.google.gwt.user.client.Event; |
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import com.google.gwt.user.client.History; |
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import com.google.gwt.user.client.Window; |
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import com.google.gwt.user.client.ui.AbstractImagePrototype; |
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import com.google.gwt.user.client.ui.DecoratedTabPanel; |
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import com.google.gwt.user.client.ui.HasHorizontalAlignment; |
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import com.google.gwt.user.client.ui.HorizontalSplitPanel; |
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import com.google.gwt.user.client.ui.RootPanel; |
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import com.google.gwt.user.client.ui.TabPanel; |
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import com.google.gwt.user.client.ui.VerticalPanel; |
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/**
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* Entry point classes define <code>onModuleLoad()</code>.
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*/
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public class GSS implements EntryPoint, ResizeHandler { |
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/**
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* A constant that denotes the completion of an IncrementalCommand.
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*/
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public static final boolean DONE = false; |
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public static final int VISIBLE_FILE_COUNT = 25; |
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/**
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* Instantiate an application-level image bundle. This object will provide
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* programmatic access to all the images needed by widgets.
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*/
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private static Images images = (Images) GWT.create(Images.class); |
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public String getUsername() { |
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return username;
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} |
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public void setAccount(AccountResource acct) { |
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account = acct; |
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} |
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public AccountResource getAccount() {
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return account;
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} |
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/**
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* An aggregate image bundle that pulls together all the images for this
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* application into a single bundle.
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*/
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public interface Images extends ClientBundle, TopPanel.Images, StatusPanel.Images, FileMenu.Images, EditMenu.Images, SettingsMenu.Images, FilePropertiesDialog.Images, MessagePanel.Images, FileList.Images, Search.Images, CellTreeView.Images { |
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@Source("gr/grnet/pithos/resources/document.png") |
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ImageResource folders(); |
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@Source("gr/grnet/pithos/resources/edit_group_22.png") |
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ImageResource groups(); |
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@Source("gr/grnet/pithos/resources/search.png") |
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ImageResource search(); |
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} |
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/**
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* The single GSS instance.
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*/
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private static GSS singleton; |
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/**
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* Gets the singleton GSS instance.
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*
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* @return the GSS object
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*/
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public static GSS get() { |
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if (GSS.singleton == null) |
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GSS.singleton = new GSS();
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return GSS.singleton;
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} |
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/**
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* The Application Clipboard implementation;
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*/
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private Clipboard clipboard = new Clipboard(); |
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private UserResource currentUserResource;
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/**
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* The top panel that contains the menu bar.
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*/
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private TopPanel topPanel;
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/**
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* The panel that contains the various system messages.
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*/
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private MessagePanel messagePanel = new MessagePanel(GSS.images); |
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/**
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* The bottom panel that contains the status bar.
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*/
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private StatusPanel statusPanel = null; |
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/**
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* The top right panel that displays the logged in user details
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*/
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private UserDetailsPanel userDetailsPanel = new UserDetailsPanel(); |
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/**
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* The file list widget.
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*/
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private FileList fileList;
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/**
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* The tab panel that occupies the right side of the screen.
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*/
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private TabPanel inner = new DecoratedTabPanel(){ |
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public void onBrowserEvent(com.google.gwt.user.client.Event event) { |
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if (DOM.eventGetType(event) == Event.ONCONTEXTMENU){ |
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if(isFileListShowing()){
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getFileList().showContextMenu(event); |
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} |
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} |
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}; |
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}; |
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/**
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* The split panel that will contain the left and right panels.
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*/
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private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel(); |
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/**
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* The widget that displays the tree of folders.
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*/
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private CellTreeView treeView = null; |
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/**
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* The currently selected item in the application, for use by the Edit menu
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* commands. Potential types are Folder, File, User and Group.
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*/
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private Object currentSelection; |
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/**
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* The WebDAV password of the current user
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*/
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private String webDAVPassword; |
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public HashMap<String, String> userFullNameMap = new HashMap<String, String>(); |
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private String username = null; |
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/**
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* The authentication token of the current user.
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*/
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private String token; |
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private FolderTreeViewModel folderTreeViewModel = new FolderTreeViewModel(); |
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private FolderTreeView folderTreeView = new FolderTreeView(folderTreeViewModel); |
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private AccountResource account;
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@Override
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public void onModuleLoad() { |
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// Initialize the singleton before calling the constructors of the
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// various widgets that might call GSS.get().
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singleton = this;
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if (parseUserCredentials())
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initialize(); |
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} |
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private void initialize() { |
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topPanel = new TopPanel(GSS.images);
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topPanel.setWidth("100%");
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messagePanel.setWidth("100%");
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messagePanel.setVisible(false);
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fileList = new FileList(images);
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// Inner contains the various lists.
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inner.sinkEvents(Event.ONCONTEXTMENU);
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inner.setAnimationEnabled(true);
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inner.getTabBar().addStyleName("pithos-MainTabBar");
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inner.getDeckPanel().addStyleName("pithos-MainTabPanelBottom");
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inner.add(fileList, createHeaderHTML(AbstractImagePrototype.create(images.folders()), "Files"), true); |
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inner.setWidth("100%");
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inner.selectTab(0);
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inner.addSelectionHandler(new SelectionHandler<Integer>() { |
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@Override
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public void onSelection(SelectionEvent<Integer> event) { |
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int tabIndex = event.getSelectedItem();
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switch (tabIndex) {
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case 0: |
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fileList.updateCurrentlyShowingStats(); |
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break;
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} |
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} |
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}); |
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// Add the left and right panels to the split panel.
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splitPanel.setLeftWidget(folderTreeView); |
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splitPanel.setRightWidget(inner); |
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splitPanel.setSplitPosition("25%");
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splitPanel.setSize("100%", "100%"); |
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splitPanel.addStyleName("pithos-splitPanel");
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// Create a dock panel that will contain the menu bar at the top,
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// the shortcuts to the left, the status bar at the bottom and the
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// right panel taking the rest.
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VerticalPanel outer = new VerticalPanel();
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outer.add(topPanel); |
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outer.add(messagePanel); |
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outer.add(splitPanel); |
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statusPanel = new StatusPanel(GSS.images);
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outer.add(statusPanel); |
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outer.setWidth("100%");
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outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER); |
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outer.setSpacing(4);
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// Hook the window resize event, so that we can adjust the UI.
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Window.addResizeHandler(this); |
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// Clear out the window's built-in margin, because we want to take
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// advantage of the entire client area.
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Window.setMargin("0px"); |
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// Finally, add the outer panel to the RootPanel, so that it will be
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// displayed.
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RootPanel.get().add(outer); |
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// Call the window resized handler to get the initial sizes setup. Doing
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// this in a deferred command causes it to occur after all widgets'
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// sizes have been computed by the browser.
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Scheduler.get().scheduleDeferred(new ScheduledCommand() {
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@Override
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public void execute() { |
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onWindowResized(Window.getClientHeight());
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} |
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}); |
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Scheduler.get().scheduleDeferred(new ScheduledCommand() {
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@Override
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public void execute() { |
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fetchAccount(); |
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} |
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}); |
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} |
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/**
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* Parse and store the user credentials to the appropriate fields.
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*/
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private boolean parseUserCredentials() { |
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Configuration conf = (Configuration) GWT.create(Configuration.class); |
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String cookie = conf.authCookie();
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String auth = Cookies.getCookie(cookie);
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if (auth == null) { |
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authenticateUser(); |
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return false; |
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} |
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else {
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String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2); |
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if (authSplit.length != 2) { |
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authenticateUser(); |
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return false; |
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} |
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else {
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username = authSplit[0];
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token = authSplit[1];
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return true; |
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} |
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} |
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} |
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/**
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* Redirect the user to the login page for authentication.
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*/
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protected void authenticateUser() { |
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Configuration conf = (Configuration) GWT.create(Configuration.class); |
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// Window.Location.assign(GWT.getModuleBaseURL() + conf.loginUrl() + "?next=" + Window.Location.getHref());
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Cookies.setCookie(conf.authCookie(), "demo" + conf.cookieSeparator() + "0000"); |
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Window.Location.assign(GWT.getModuleBaseURL() + "GSS.html"); |
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} |
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private void fetchAccount() { |
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String path = getApiPath() + username + "?format=json"; |
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GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, path) {
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@Override
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public void onSuccess(AccountResource result) { |
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account = result; |
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statusPanel.displayStats(account); |
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folderTreeViewModel.initialize(account); |
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} |
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@Override
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public void onError(Throwable t) { |
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GWT.log("Error getting account", t);
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if (t instanceof RestException) |
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GSS.get().displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
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else
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GSS.get().displayError("System error fetching user data: " + t.getMessage());
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} |
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}; |
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Scheduler.get().scheduleDeferred(getAccount); |
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} |
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/**
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* Clear the cookie and redirect the user to the logout page.
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*/
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void logout() {
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Configuration conf = (Configuration) GWT.create(Configuration.class); |
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String cookie = conf.authCookie();
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String domain = Window.Location.getHostName(); |
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String path = Window.Location.getPath(); |
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Cookies.setCookie(cookie, "", null, domain, path, false); |
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String baseUrl = GWT.getModuleBaseURL();
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String homeUrl = baseUrl.substring(0, baseUrl.indexOf(path)); |
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Window.Location.assign(homeUrl + conf.logoutUrl());
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} |
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/**
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* Creates an HTML fragment that places an image & caption together, for use
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* in a group header.
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*
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* @param imageProto an image prototype for an image
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* @param caption the group caption
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* @return the header HTML fragment
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*/
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private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) { |
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String captionHTML = "<table class='caption' cellpadding='0' " |
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+ "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML() |
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+ "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'> " |
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+ caption + "</b></td></tr></table>";
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return captionHTML;
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} |
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private void onWindowResized(int height) { |
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// Adjust the split panel to take up the available room in the window.
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int newHeight = height - splitPanel.getAbsoluteTop() - 44; |
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if (newHeight < 1) |
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newHeight = 1;
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splitPanel.setHeight("" + newHeight);
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inner.setHeight("" + newHeight);
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} |
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@Override
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public void onResize(ResizeEvent event) { |
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int height = event.getHeight();
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onWindowResized(height); |
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} |
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public boolean isFileListShowing() { |
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int tab = inner.getTabBar().getSelectedTab();
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if (tab == 0) |
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return true; |
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return false; |
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} |
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public boolean isSearchResultsShowing() { |
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int tab = inner.getTabBar().getSelectedTab();
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if (tab == 2) |
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return true; |
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return false; |
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} |
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/**
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* Make the user list visible.
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*/
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public void showUserList() { |
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inner.selectTab(1);
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} |
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|
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/**
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* Make the file list visible.
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*/
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public void showFileList() { |
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fileList.updateFileCache(true /*clear selection*/); |
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inner.selectTab(0);
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} |
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/**
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* Make the file list visible.
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*
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* @param update
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*/
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public void showFileList(boolean update) { |
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if(update){
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getTreeView().refreshCurrentNode(true);
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} |
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else{
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RestResource currentFolder = getTreeView().getSelection(); |
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if(currentFolder!=null){ |
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showFileList(currentFolder); |
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} |
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} |
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|
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} |
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public void showFileList(RestResource r) { |
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showFileList(r,true);
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} |
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public void showFileList(RestResource r, boolean clearSelection) { |
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RestResource currentFolder = r; |
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if(currentFolder!=null){ |
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List<FileResource> files = null; |
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if (currentFolder instanceof RestResourceWrapper) { |
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RestResourceWrapper folder = (RestResourceWrapper) currentFolder; |
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files = folder.getResource().getFiles(); |
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} else if (currentFolder instanceof TrashResource) { |
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TrashResource folder = (TrashResource) currentFolder; |
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files = folder.getFiles(); |
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} |
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else if (currentFolder instanceof SharedResource) { |
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SharedResource folder = (SharedResource) currentFolder; |
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files = folder.getFiles(); |
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} |
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else if (currentFolder instanceof OtherUserResource) { |
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OtherUserResource folder = (OtherUserResource) currentFolder; |
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files = folder.getFiles(); |
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} |
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if (files != null) |
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getFileList().setFiles(files); |
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else
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getFileList().setFiles(new ArrayList<FileResource>()); |
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} |
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fileList.updateFileCache(clearSelection /*clear selection*/);
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inner.selectTab(0);
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} |
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|
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/**
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* Display the 'loading' indicator.
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*/
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public void showLoadingIndicator(String message, String path) { |
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if(path!=null){ |
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String[] split = path.split("/"); |
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message = message +" "+URL.decode(split[split.length-1]); |
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} |
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topPanel.getLoading().show(message); |
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} |
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|
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/**
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* Hide the 'loading' indicator.
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*/
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public void hideLoadingIndicator() { |
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topPanel.getLoading().hide(); |
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} |
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|
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/**
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* A native JavaScript method to reach out to the browser's window and
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* invoke its resizeTo() method.
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*
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* @param x the new width
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* @param y the new height
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*/
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public static native void resizeTo(int x, int y) /*-{ |
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$wnd.resizeTo(x,y);
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}-*/;
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|
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/**
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* A helper method that returns true if the user's list is currently visible
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* and false if it is hidden.
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*
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* @return true if the user list is visible
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*/
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public boolean isUserListVisible() { |
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return inner.getTabBar().getSelectedTab() == 1; |
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} |
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|
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/**
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* Display an error message.
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*
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* @param msg the message to display
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*/
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public void displayError(String msg) { |
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messagePanel.displayError(msg); |
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} |
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|
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/**
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* Display a warning message.
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*
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* @param msg the message to display
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*/
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public void displayWarning(String msg) { |
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messagePanel.displayWarning(msg); |
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} |
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|
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/**
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* Display an informational message.
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*
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* @param msg the message to display
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*/
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public void displayInformation(String msg) { |
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messagePanel.displayInformation(msg); |
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} |
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|
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/**
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* Retrieve the folders.
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*
|
546 |
* @return the folders
|
547 |
|
548 |
public Folders getFolders() {
|
549 |
return folders;
|
550 |
}*/
|
551 |
|
552 |
/**
|
553 |
* Retrieve the currentSelection.
|
554 |
*
|
555 |
* @return the currentSelection
|
556 |
*/
|
557 |
public Object getCurrentSelection() { |
558 |
return currentSelection;
|
559 |
} |
560 |
|
561 |
/**
|
562 |
* Modify the currentSelection.
|
563 |
*
|
564 |
* @param newCurrentSelection the currentSelection to set
|
565 |
*/
|
566 |
public void setCurrentSelection(Object newCurrentSelection) { |
567 |
currentSelection = newCurrentSelection; |
568 |
} |
569 |
|
570 |
/**
|
571 |
* Retrieve the fileList.
|
572 |
*
|
573 |
* @return the fileList
|
574 |
*/
|
575 |
public FileList getFileList() {
|
576 |
return fileList;
|
577 |
} |
578 |
|
579 |
/**
|
580 |
* Retrieve the topPanel.
|
581 |
*
|
582 |
* @return the topPanel
|
583 |
*/
|
584 |
TopPanel getTopPanel() { |
585 |
return topPanel;
|
586 |
} |
587 |
|
588 |
/**
|
589 |
* Retrieve the clipboard.
|
590 |
*
|
591 |
* @return the clipboard
|
592 |
*/
|
593 |
public Clipboard getClipboard() { |
594 |
return clipboard;
|
595 |
} |
596 |
|
597 |
public StatusPanel getStatusPanel() {
|
598 |
return statusPanel;
|
599 |
} |
600 |
|
601 |
/**
|
602 |
* Retrieve the userDetailsPanel.
|
603 |
*
|
604 |
* @return the userDetailsPanel
|
605 |
*/
|
606 |
public UserDetailsPanel getUserDetailsPanel() {
|
607 |
return userDetailsPanel;
|
608 |
} |
609 |
|
610 |
|
611 |
|
612 |
public String getToken() { |
613 |
return token;
|
614 |
} |
615 |
|
616 |
public String getWebDAVPassword() { |
617 |
return webDAVPassword;
|
618 |
} |
619 |
|
620 |
/**
|
621 |
* Retrieve the currentUserResource.
|
622 |
*
|
623 |
* @return the currentUserResource
|
624 |
*/
|
625 |
public UserResource getCurrentUserResource() {
|
626 |
return currentUserResource;
|
627 |
} |
628 |
|
629 |
/**
|
630 |
* Modify the currentUserResource.
|
631 |
*
|
632 |
* @param newUser the new currentUserResource
|
633 |
*/
|
634 |
public void setCurrentUserResource(UserResource newUser) { |
635 |
currentUserResource = newUser; |
636 |
} |
637 |
|
638 |
public static native void preventIESelection() /*-{ |
639 |
$doc.body.onselectstart = function () { return false; };
|
640 |
}-*/;
|
641 |
|
642 |
public static native void enableIESelection() /*-{ |
643 |
if ($doc.body.onselectstart != null)
|
644 |
$doc.body.onselectstart = null;
|
645 |
}-*/;
|
646 |
|
647 |
/**
|
648 |
* @return the absolute path of the API root URL
|
649 |
*/
|
650 |
public String getApiPath() { |
651 |
Configuration conf = (Configuration) GWT.create(Configuration.class); |
652 |
return conf.apiPath();
|
653 |
} |
654 |
|
655 |
/**
|
656 |
* Convert server date to local time according to browser timezone
|
657 |
* and format it according to localized pattern.
|
658 |
* Time is always formatted to 24hr format.
|
659 |
* NB: This assumes that server runs in UTC timezone. Otherwise
|
660 |
* we would need to adjust for server time offset as well.
|
661 |
*
|
662 |
* @param date
|
663 |
* @return String
|
664 |
*/
|
665 |
public static String formatLocalDateTime(Date date) { |
666 |
Date convertedDate = new Date(date.getTime() - date.getTimezoneOffset()); |
667 |
final DateTimeFormat dateFormatter = DateTimeFormat.getShortDateFormat();
|
668 |
final DateTimeFormat timeFormatter = DateTimeFormat.getFormat("HH:mm"); |
669 |
String datePart = dateFormatter.format(convertedDate);
|
670 |
String timePart = timeFormatter.format(convertedDate);
|
671 |
return datePart + " " + timePart; |
672 |
} |
673 |
|
674 |
/**
|
675 |
* History support for folder navigation
|
676 |
* adds a new browser history entry
|
677 |
*
|
678 |
* @param key
|
679 |
*/
|
680 |
public void updateHistory(String key){ |
681 |
// Replace any whitespace of the initial string to "+"
|
682 |
// String result = key.replaceAll("\\s","+");
|
683 |
// Add a new browser history entry.
|
684 |
// History.newItem(result);
|
685 |
History.newItem(key); |
686 |
} |
687 |
|
688 |
/**
|
689 |
* This method examines the token input and add a "/" at the end in case it's omitted.
|
690 |
* This happens only in Files/trash/, Files/shared/, Files/others.
|
691 |
*
|
692 |
* @param tokenInput
|
693 |
* @return the formated token with a "/" at the end or the same tokenInput parameter
|
694 |
*/
|
695 |
|
696 |
private String handleSpecialFolderNames(String tokenInput){ |
697 |
List<String> pathsToCheck = Arrays.asList("Files/trash", "Files/shared", "Files/others"); |
698 |
if(pathsToCheck.contains(tokenInput))
|
699 |
return tokenInput + "/"; |
700 |
return tokenInput;
|
701 |
|
702 |
} |
703 |
|
704 |
/**
|
705 |
* Reject illegal resource names, like '.' or '..' or slashes '/'.
|
706 |
*/
|
707 |
static boolean isValidResourceName(String name) { |
708 |
if (".".equals(name) || "..".equals(name) || name.contains("/")) |
709 |
return false; |
710 |
return true; |
711 |
} |
712 |
|
713 |
public void putUserToMap(String _userName, String _userFullName){ |
714 |
userFullNameMap.put(_userName, _userFullName); |
715 |
} |
716 |
|
717 |
public String findUserFullName(String _userName){ |
718 |
return userFullNameMap.get(_userName);
|
719 |
} |
720 |
public String getUserFullName(String _userName) { |
721 |
|
722 |
if (GSS.get().findUserFullName(_userName) == null) |
723 |
//if there is no userFullName found then the map fills with the given _userName,
|
724 |
//so userFullName = _userName
|
725 |
GSS.get().putUserToMap(_userName, _userName); |
726 |
else if(GSS.get().findUserFullName(_userName).indexOf('@') != -1){ |
727 |
//if the userFullName = _userName the GetUserCommand updates the userFullName in the map
|
728 |
GetUserCommand guc = new GetUserCommand(_userName);
|
729 |
guc.execute(); |
730 |
} |
731 |
return GSS.get().findUserFullName(_userName);
|
732 |
} |
733 |
/**
|
734 |
* Retrieve the treeView.
|
735 |
*
|
736 |
* @return the treeView
|
737 |
*/
|
738 |
public CellTreeView getTreeView() {
|
739 |
return treeView;
|
740 |
} |
741 |
|
742 |
public void onResourceUpdate(RestResource resource,boolean clearSelection){ |
743 |
if(resource instanceof RestResourceWrapper || resource instanceof OtherUserResource || resource instanceof TrashResource || resource instanceof SharedResource){ |
744 |
if(getTreeView().getSelection()!=null&&getTreeView().getSelection().getUri().equals(resource.getUri())) |
745 |
showFileList(resource,clearSelection); |
746 |
} |
747 |
|
748 |
} |
749 |
} |