root / web_client / src / gr / grnet / pithos / web / client / mysharedtree / MysharedTreeViewModel.java @ b6e41e8b
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/*
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* Copyright 2011 GRNET S.A. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* 1. Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* The views and conclusions contained in the software and
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* documentation are those of the authors and should not be
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* interpreted as representing official policies, either expressed
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* or implied, of GRNET S.A.
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*/
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package gr.grnet.pithos.web.client.mysharedtree; |
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import gr.grnet.pithos.web.client.FolderContextMenu; |
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import gr.grnet.pithos.web.client.Pithos; |
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import gr.grnet.pithos.web.client.foldertree.File; |
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import gr.grnet.pithos.web.client.foldertree.Folder; |
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import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeView.Templates; |
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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 java.util.HashMap; |
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import java.util.HashSet; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.Set; |
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import com.google.gwt.cell.client.AbstractCell; |
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import com.google.gwt.cell.client.Cell; |
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import com.google.gwt.cell.client.TextCell; |
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import com.google.gwt.cell.client.ValueUpdater; |
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import com.google.gwt.core.client.GWT; |
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import com.google.gwt.core.client.Scheduler; |
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import com.google.gwt.event.dom.client.ContextMenuEvent; |
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import com.google.gwt.safehtml.shared.SafeHtml; |
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import com.google.gwt.safehtml.shared.SafeHtmlBuilder; |
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import com.google.gwt.text.shared.SafeHtmlRenderer; |
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import com.google.gwt.user.client.Command; |
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import com.google.gwt.user.client.ui.AbstractImagePrototype; |
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import com.google.gwt.view.client.ListDataProvider; |
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import com.google.gwt.view.client.SelectionChangeEvent; |
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import com.google.gwt.view.client.SelectionChangeEvent.Handler; |
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import com.google.gwt.view.client.SingleSelectionModel; |
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import com.google.gwt.view.client.TreeViewModel; |
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public class MysharedTreeViewModel implements TreeViewModel { |
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protected Pithos app;
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private Cell<Folder> folderCell = new AbstractCell<Folder>(ContextMenuEvent.getType().getName()) { |
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@Override
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public void render(Context context, Folder folder, SafeHtmlBuilder safeHtmlBuilder) { |
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String html = AbstractImagePrototype.create(MysharedTreeView.images.folderYellow()).getHTML();
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safeHtmlBuilder.appendHtmlConstant(html); |
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safeHtmlBuilder.append(Templates.INSTANCE.nameSpan(folder.getName()));
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} |
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@Override
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public void onBrowserEvent(Context context, com.google.gwt.dom.client.Element parent, Folder folder, com.google.gwt.dom.client.NativeEvent event, ValueUpdater<Folder> valueUpdater) { |
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if (event.getType().equals(ContextMenuEvent.getType().getName())) {
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MysharedTreeViewModel.this.selectionModel.setSelected(folder, true);
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FolderContextMenu menu = new FolderContextMenu(app, MysharedTreeView.images, folder);
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menu.setPopupPosition(event.getClientX(), event.getClientY()); |
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menu.show(); |
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} |
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} |
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}; |
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protected ListDataProvider<Folder> firstLevelDataProvider = new ListDataProvider<Folder>(); |
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private Map<Folder, ListDataProvider<Folder>> dataProviderMap = new HashMap<Folder, ListDataProvider<Folder>>(); |
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protected Set<File> sharedFiles = new HashSet<File>(); |
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private SingleSelectionModel<Folder> selectionModel; |
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public MysharedTreeViewModel(Pithos _app, SingleSelectionModel<Folder> selectionModel) { |
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app = _app; |
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this.selectionModel = selectionModel;
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} |
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@Override
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public <T> NodeInfo<?> getNodeInfo(T value) {
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if (value == null) { |
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ListDataProvider<String> rootDataProvider = new ListDataProvider<String>(); |
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rootDataProvider.getList().add("My Shared");
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final SingleSelectionModel<String> selectionModel2 = new SingleSelectionModel<String>(); |
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selectionModel2.addSelectionChangeHandler(new Handler() { |
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@Override
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public void onSelectionChange(SelectionChangeEvent event) { |
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if (selectionModel2.getSelectedObject() != null) { |
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app.deselectOthers(selectionModel2); |
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fetchSharedFiles(); |
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app.showFiles(sharedFiles); |
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} |
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} |
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}); |
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app.addSelectionModel(selectionModel2); |
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return new DefaultNodeInfo<String>(rootDataProvider, new TextCell(new SafeHtmlRenderer<String>() { |
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@Override
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public SafeHtml render(String object) { |
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SafeHtmlBuilder builder = new SafeHtmlBuilder();
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render(object, builder); |
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return builder.toSafeHtml();
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} |
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@Override
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public void render(String object, SafeHtmlBuilder builder) { |
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String html = AbstractImagePrototype.create(MysharedTreeView.images.myShared()).getHTML();
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builder.appendHtmlConstant(html); |
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builder.append(MysharedTreeView.Templates.INSTANCE.nameSpan(object)); |
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} |
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}), selectionModel2, null);
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} |
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else if (value instanceof String) { |
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fetchSharedContainers(); |
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return new DefaultNodeInfo<Folder>(firstLevelDataProvider, folderCell, selectionModel, null); |
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} |
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else {
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final Folder f = (Folder) value;
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if (dataProviderMap.get(f) == null) { |
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dataProviderMap.put(f, new ListDataProvider<Folder>());
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} |
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final ListDataProvider<Folder> dataProvider = dataProviderMap.get(f);
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fetchFolder(f, dataProvider, false);
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return new DefaultNodeInfo<Folder>(dataProvider, folderCell, selectionModel, null); |
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} |
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} |
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protected void fetchSharedFiles() { |
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final List<Folder> containers = app.getAccount().getContainers(); |
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final ListDataProvider<Folder> tempProvider = new ListDataProvider<Folder>(); |
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Iterator<Folder> iter = containers.iterator();
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fetchFolder(iter, tempProvider, new Command() {
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@Override
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public void execute() { |
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firstLevelDataProvider.getList().clear(); |
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firstLevelDataProvider.getList().addAll(tempProvider.getList()); |
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app.showFiles(sharedFiles); |
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} |
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}); |
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} |
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private void fetchSharedContainers() { |
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final List<Folder> containers = app.getAccount().getContainers(); |
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final ListDataProvider<Folder> tempProvider = new ListDataProvider<Folder>(); |
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Iterator<Folder> iter = containers.iterator();
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fetchFolder(iter, tempProvider, new Command() {
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@Override
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public void execute() { |
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firstLevelDataProvider.getList().clear(); |
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firstLevelDataProvider.getList().addAll(tempProvider.getList()); |
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} |
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}); |
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} |
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@Override
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public boolean isLeaf(Object o) { |
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if (o instanceof Folder) { |
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Folder f = (Folder) o; |
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return f.getSubfolders().isEmpty();
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} |
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return false; |
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} |
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protected void fetchFolder(final Iterator<Folder> iter, final ListDataProvider<Folder> dataProvider, final Command callback) { |
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if (iter.hasNext()) {
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final Folder f = iter.next();
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String path = "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + f.getPrefix(); |
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GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), app.getUsername(), path, f) {
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@Override
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public void onSuccess(Folder result) { |
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if (!result.isShared()) {
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for (File file : result.getFiles()) { |
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if (file.isShared())
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sharedFiles.add(file); |
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} |
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Iterator<Folder> iter2 = result.getSubfolders().iterator();
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fetchFolder(iter2, dataProvider, new Command() {
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@Override
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public void execute() { |
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fetchFolder(iter, dataProvider, callback); |
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} |
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}); |
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} |
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else {
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dataProvider.getList().add(result); |
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fetchFolder(iter, dataProvider, callback); |
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} |
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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 folder", t);
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if (t instanceof RestException) |
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app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
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else
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app.displayError("System error fetching folder: " + t.getMessage());
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} |
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}; |
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getFolder.setHeader("X-Auth-Token", app.getToken());
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Scheduler.get().scheduleDeferred(getFolder); |
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} |
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else if (callback != null) |
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callback.execute(); |
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} |
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public Folder getSelection() {
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return selectionModel.getSelectedObject();
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} |
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public void updateFolder(Folder folder, boolean showfiles) { |
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if (dataProviderMap.get(folder) == null) { |
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dataProviderMap.put(folder, new ListDataProvider<Folder>());
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} |
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final ListDataProvider<Folder> dataProvider = dataProviderMap.get(folder);
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fetchFolder(folder, dataProvider, showfiles); |
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} |
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public void fetchFolder(final Folder f, final ListDataProvider<Folder> dataProvider, final boolean showfiles) { |
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String path = "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + f.getPrefix(); |
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GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), app.getUsername(), path, f) {
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@Override
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public void onSuccess(final Folder result) { |
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if (showfiles)
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app.showFiles(result); |
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Iterator<Folder> iter = result.getSubfolders().iterator();
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fetchFolder(iter, dataProvider, new Command() {
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@Override
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public void execute() { |
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dataProvider.getList().clear(); |
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dataProvider.getList().addAll(result.getSubfolders()); |
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app.getMySharedTreeView().updateChildren(f); |
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} |
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}); |
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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 folder", t);
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if (t instanceof RestException) |
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app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
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else
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app.displayError("System error fetching folder: " + t.getMessage());
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} |
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}; |
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getFolder.setHeader("X-Auth-Token", app.getToken());
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Scheduler.get().scheduleDeferred(getFolder); |
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} |
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} |