Remove UI dependencies to JCR.
[lgpl/argeo-commons.git] / jcr / org.argeo.cms.jcr.ui / src / org / argeo / cms / ui / fs / CmsFsBrowser.java
diff --git a/jcr/org.argeo.cms.jcr.ui/src/org/argeo/cms/ui/fs/CmsFsBrowser.java b/jcr/org.argeo.cms.jcr.ui/src/org/argeo/cms/ui/fs/CmsFsBrowser.java
new file mode 100644 (file)
index 0000000..d9c1c12
--- /dev/null
@@ -0,0 +1,524 @@
+package org.argeo.cms.ui.fs;
+
+import java.io.IOException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.nio.file.DirectoryStream;
+import java.nio.file.FileSystem;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.spi.FileSystemProvider;
+import java.security.PrivilegedActionException;
+import java.security.PrivilegedExceptionAction;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.jcr.Node;
+import javax.jcr.Repository;
+import javax.jcr.Session;
+
+import org.argeo.cms.auth.CurrentUser;
+import org.argeo.cms.jcr.CmsJcrUtils;
+import org.argeo.cms.swt.CmsException;
+import org.argeo.cms.swt.CmsSwtUtils;
+import org.argeo.eclipse.ui.ColumnDefinition;
+import org.argeo.eclipse.ui.EclipseUiUtils;
+import org.argeo.eclipse.ui.fs.FileIconNameLabelProvider;
+import org.argeo.eclipse.ui.fs.FsTableViewer;
+import org.argeo.eclipse.ui.fs.FsUiConstants;
+import org.argeo.eclipse.ui.fs.FsUiUtils;
+import org.argeo.eclipse.ui.fs.NioFileLabelProvider;
+import org.argeo.jcr.JcrUtils;
+import org.eclipse.jface.viewers.DoubleClickEvent;
+import org.eclipse.jface.viewers.IDoubleClickListener;
+import org.eclipse.jface.viewers.ISelectionChangedListener;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.jface.viewers.SelectionChangedEvent;
+import org.eclipse.jface.viewers.Viewer;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.custom.SashForm;
+import org.eclipse.swt.events.KeyEvent;
+import org.eclipse.swt.events.KeyListener;
+import org.eclipse.swt.events.ModifyEvent;
+import org.eclipse.swt.events.ModifyListener;
+import org.eclipse.swt.events.MouseAdapter;
+import org.eclipse.swt.events.MouseEvent;
+import org.eclipse.swt.events.SelectionAdapter;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.layout.GridLayout;
+import org.eclipse.swt.layout.RowData;
+import org.eclipse.swt.layout.RowLayout;
+import org.eclipse.swt.widgets.Button;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Label;
+import org.eclipse.swt.widgets.Table;
+import org.eclipse.swt.widgets.Text;
+
+/**
+ * Default CMS browser composite: a sashForm layout with bookmarks at the left
+ * hand side, a simple table in the middle and an overview at right hand side.
+ */
+public class CmsFsBrowser extends Composite {
+       // private final static Log log = LogFactory.getLog(CmsFsBrowser.class);
+       private static final long serialVersionUID = -40347919096946585L;
+
+       private final FileSystemProvider nodeFileSystemProvider;
+       private final Node currentBaseContext;
+
+       // UI Parts for the browser
+       private Composite leftPannelCmp;
+       private Composite filterCmp;
+       private Text filterTxt;
+       private FsTableViewer directoryDisplayViewer;
+       private Composite rightPannelCmp;
+
+       private FsContextMenu contextMenu;
+
+       // Local context (this composite is state full)
+       private Path initialPath;
+       private Path currDisplayedFolder;
+       private Path currSelected;
+
+       // local variables (to be cleaned)
+       private int bookmarkColWith = 500;
+
+       /*
+        * WARNING: unfinalised implementation of the mechanism to retrieve base
+        * paths
+        */
+
+       private final static String NODE_PREFIX = "node://";
+
+       private String getCurrentHomePath() {
+               Session session = null;
+               try {
+                       Repository repo = currentBaseContext.getSession().getRepository();
+                       session = CurrentUser.tryAs(() -> repo.login());
+                       String homepath = CmsJcrUtils.getUserHome(session).getPath();
+                       return homepath;
+               } catch (Exception e) {
+                       throw new CmsException("Cannot retrieve Current User Home Path", e);
+               } finally {
+                       JcrUtils.logoutQuietly(session);
+               }
+       }
+
+       protected Path[] getMyFilesPath() {
+               // return Paths.get(System.getProperty("user.dir"));
+               String currHomeUriStr = NODE_PREFIX + getCurrentHomePath();
+               try {
+                       URI uri = new URI(currHomeUriStr);
+                       FileSystem fileSystem = nodeFileSystemProvider.getFileSystem(uri);
+                       if (fileSystem == null) {
+                               PrivilegedExceptionAction<FileSystem> pea = new PrivilegedExceptionAction<FileSystem>() {
+                                       @Override
+                                       public FileSystem run() throws Exception {
+                                               return nodeFileSystemProvider.newFileSystem(uri, null);
+                                       }
+
+                               };
+                               fileSystem = CurrentUser.tryAs(pea);
+                       }
+                       Path[] paths = { fileSystem.getPath(getCurrentHomePath()), fileSystem.getPath("/") };
+                       return paths;
+               } catch (URISyntaxException | PrivilegedActionException e) {
+                       throw new RuntimeException("unable to initialise home file system for " + currHomeUriStr, e);
+               }
+       }
+
+       private Path[] getMyGroupsFilesPath() {
+               // TODO
+               Path[] paths = { Paths.get(System.getProperty("user.dir")), Paths.get("/tmp") };
+               return paths;
+       }
+
+       private Path[] getMyBookmarks() {
+               // TODO
+               Path[] paths = { Paths.get(System.getProperty("user.dir")), Paths.get("/tmp"), Paths.get("/opt") };
+               return paths;
+       }
+
+       /* End of warning */
+
+       public CmsFsBrowser(Composite parent, int style, Node context, FileSystemProvider fileSystemProvider) {
+               super(parent, style);
+               this.nodeFileSystemProvider = fileSystemProvider;
+               this.currentBaseContext = context;
+
+               this.setLayout(EclipseUiUtils.noSpaceGridLayout());
+
+               SashForm form = new SashForm(this, SWT.HORIZONTAL);
+
+               leftPannelCmp = new Composite(form, SWT.NO_FOCUS);
+               // Bookmarks are still static
+               populateBookmarks(leftPannelCmp);
+
+               Composite centerCmp = new Composite(form, SWT.BORDER | SWT.NO_FOCUS);
+               createDisplay(centerCmp);
+
+               rightPannelCmp = new Composite(form, SWT.NO_FOCUS);
+
+               form.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
+               form.setWeights(new int[] { 15, 40, 20 });
+       }
+
+       void refresh() {
+               modifyFilter(false);
+               // also refresh bookmarks and groups
+       }
+
+       private void createDisplay(final Composite parent) {
+               parent.setLayout(EclipseUiUtils.noSpaceGridLayout());
+
+               // top filter
+               filterCmp = new Composite(parent, SWT.NO_FOCUS);
+               filterCmp.setLayoutData(EclipseUiUtils.fillWidth());
+               addFilterPanel(filterCmp);
+
+               // Main display
+               directoryDisplayViewer = new FsTableViewer(parent, SWT.MULTI);
+               List<ColumnDefinition> colDefs = new ArrayList<>();
+               colDefs.add(new ColumnDefinition(new FileIconNameLabelProvider(), "Name", 250));
+               colDefs.add(new ColumnDefinition(new NioFileLabelProvider(FsUiConstants.PROPERTY_SIZE), "Size", 100));
+               colDefs.add(new ColumnDefinition(new NioFileLabelProvider(FsUiConstants.PROPERTY_TYPE), "Type", 150));
+               colDefs.add(new ColumnDefinition(new NioFileLabelProvider(FsUiConstants.PROPERTY_LAST_MODIFIED),
+                               "Last modified", 400));
+               final Table table = directoryDisplayViewer.configureDefaultTable(colDefs);
+               table.setLayoutData(EclipseUiUtils.fillAll());
+
+               // table.addKeyListener(new KeyListener() {
+               // private static final long serialVersionUID = -8083424284436715709L;
+               //
+               // @Override
+               // public void keyReleased(KeyEvent e) {
+               // }
+               //
+               // @Override
+               // public void keyPressed(KeyEvent e) {
+               // if (log.isDebugEnabled())
+               // log.debug("Key event received: " + e.keyCode);
+               // IStructuredSelection selection = (IStructuredSelection)
+               // directoryDisplayViewer.getSelection();
+               // Path selected = null;
+               // if (!selection.isEmpty())
+               // selected = ((Path) selection.getFirstElement());
+               // if (e.keyCode == SWT.CR) {
+               // if (!Files.isDirectory(selected))
+               // return;
+               // if (selected != null) {
+               // currDisplayedFolder = selected;
+               // directoryDisplayViewer.setInput(currDisplayedFolder, "*");
+               // }
+               // } else if (e.keyCode == SWT.BS) {
+               // currDisplayedFolder = currDisplayedFolder.getParent();
+               // directoryDisplayViewer.setInput(currDisplayedFolder, "*");
+               // directoryDisplayViewer.getTable().setFocus();
+               // }
+               // }
+               // });
+
+               directoryDisplayViewer.addSelectionChangedListener(new ISelectionChangedListener() {
+
+                       @Override
+                       public void selectionChanged(SelectionChangedEvent event) {
+                               IStructuredSelection selection = (IStructuredSelection) directoryDisplayViewer.getSelection();
+                               Path selected = null;
+                               if (selection.isEmpty())
+                                       setSelected(null);
+                               else
+                                       selected = ((Path) selection.getFirstElement());
+                               if (selected != null) {
+                                       // TODO manage multiple selection
+                                       setSelected(selected);
+                               }
+                       }
+               });
+
+               directoryDisplayViewer.addDoubleClickListener(new IDoubleClickListener() {
+                       @Override
+                       public void doubleClick(DoubleClickEvent event) {
+                               IStructuredSelection selection = (IStructuredSelection) directoryDisplayViewer.getSelection();
+                               Path selected = null;
+                               if (!selection.isEmpty())
+                                       selected = ((Path) selection.getFirstElement());
+                               if (selected != null) {
+                                       if (!Files.isDirectory(selected))
+                                               return;
+                                       setInput(selected);
+                               }
+                       }
+               });
+
+               // The context menu
+               contextMenu = new FsContextMenu(this);
+
+               table.addMouseListener(new MouseAdapter() {
+                       private static final long serialVersionUID = 6737579410648595940L;
+
+                       @Override
+                       public void mouseDown(MouseEvent e) {
+                               if (e.button == 3) {
+                                       // contextMenu.setCurrFolderPath(currDisplayedFolder);
+                                       contextMenu.show(table, new Point(e.x, e.y), currDisplayedFolder);
+                               }
+                       }
+               });
+       }
+
+       private void addPathElementBtn(Path path) {
+               Button elemBtn = new Button(filterCmp, SWT.PUSH);
+               String nameStr;
+               if (path.toString().equals("/"))
+                       nameStr = "[jcr:root]";
+               else
+                       nameStr = path.getFileName().toString();
+               elemBtn.setText(nameStr + " >> ");
+               CmsSwtUtils.style(elemBtn, FsStyles.BREAD_CRUMB_BTN);
+               elemBtn.addSelectionListener(new SelectionAdapter() {
+                       private static final long serialVersionUID = -4103695476023480651L;
+
+                       @Override
+                       public void widgetSelected(SelectionEvent e) {
+                               setInput(path);
+                       }
+               });
+       }
+
+       public void setInput(Path path) {
+               if (path.equals(currDisplayedFolder))
+                       return;
+               currDisplayedFolder = path;
+
+               Path diff = initialPath.relativize(currDisplayedFolder);
+
+               for (Control child : filterCmp.getChildren())
+                       if (!child.equals(filterTxt))
+                               child.dispose();
+
+               addPathElementBtn(initialPath);
+               Path currTarget = initialPath;
+               if (!diff.toString().equals(""))
+                       for (Path pathElem : diff) {
+                               currTarget = currTarget.resolve(pathElem);
+                               addPathElementBtn(currTarget);
+                       }
+
+               filterTxt.setText("");
+               filterTxt.moveBelow(null);
+               setSelected(null);
+               filterCmp.getParent().layout(true, true);
+       }
+
+       private void setSelected(Path path) {
+               currSelected = path;
+               setOverviewInput(path);
+       }
+
+       public Viewer getViewer() {
+               return directoryDisplayViewer;
+       }
+
+       private void populateBookmarks(Composite parent) {
+               CmsSwtUtils.clear(parent);
+               parent.setLayout(new GridLayout());
+               ISelectionChangedListener selList = new BookmarksSelChangeListener();
+
+               FsTableViewer homeViewer = new FsTableViewer(parent, SWT.SINGLE | SWT.NO_SCROLL);
+               Table table = homeViewer.configureDefaultSingleColumnTable(bookmarkColWith);
+               GridData gd = EclipseUiUtils.fillWidth();
+               gd.horizontalIndent = 10;
+               table.setLayoutData(gd);
+               homeViewer.addSelectionChangedListener(selList);
+               homeViewer.setPathsInput(getMyFilesPath());
+
+               appendTitle(parent, "Shared files");
+               FsTableViewer groupsViewer = new FsTableViewer(parent, SWT.SINGLE | SWT.NO_SCROLL);
+               table = groupsViewer.configureDefaultSingleColumnTable(bookmarkColWith);
+               gd = EclipseUiUtils.fillWidth();
+               gd.horizontalIndent = 10;
+               table.setLayoutData(gd);
+               groupsViewer.addSelectionChangedListener(selList);
+               groupsViewer.setPathsInput(getMyGroupsFilesPath());
+
+               appendTitle(parent, "My bookmarks");
+               FsTableViewer bookmarksViewer = new FsTableViewer(parent, SWT.SINGLE | SWT.NO_SCROLL);
+               table = bookmarksViewer.configureDefaultSingleColumnTable(bookmarkColWith);
+               gd = EclipseUiUtils.fillWidth();
+               gd.horizontalIndent = 10;
+               table.setLayoutData(gd);
+               bookmarksViewer.addSelectionChangedListener(selList);
+               bookmarksViewer.setPathsInput(getMyBookmarks());
+       }
+
+       /**
+        * Recreates the content of the box that displays information about the
+        * current selected Path.
+        */
+       private void setOverviewInput(Path path) {
+               try {
+                       EclipseUiUtils.clear(rightPannelCmp);
+                       rightPannelCmp.setLayout(new GridLayout());
+                       if (path != null) {
+                               // if (isImg(context)) {
+                               // EditableImage image = new Img(parent, RIGHT, context,
+                               // imageWidth);
+                               // image.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER,
+                               // true, false,
+                               // 2, 1));
+                               // }
+
+                               Label contextL = new Label(rightPannelCmp, SWT.NONE);
+                               contextL.setText(path.getFileName().toString());
+                               contextL.setFont(EclipseUiUtils.getBoldFont(rightPannelCmp));
+                               addProperty(rightPannelCmp, "Last modified", Files.getLastModifiedTime(path).toString());
+                               // addProperty(rightPannelCmp, "Owner",
+                               // Files.getOwner(path).getName());
+                               if (Files.isDirectory(path)) {
+                                       addProperty(rightPannelCmp, "Type", "Folder");
+                               } else {
+                                       String mimeType = Files.probeContentType(path);
+                                       if (EclipseUiUtils.isEmpty(mimeType))
+                                               mimeType = "<i>Unknown</i>";
+                                       addProperty(rightPannelCmp, "Type", mimeType);
+                                       addProperty(rightPannelCmp, "Size", FsUiUtils.humanReadableByteCount(Files.size(path), false));
+                               }
+                       }
+                       rightPannelCmp.layout(true, true);
+               } catch (IOException e) {
+                       throw new CmsException("Cannot display details for " + path.toString(), e);
+               }
+       }
+
+       private void addFilterPanel(Composite parent) {
+               RowLayout rl = new RowLayout(SWT.HORIZONTAL);
+               rl.wrap = true;
+               parent.setLayout(rl);
+               // parent.setLayout(EclipseUiUtils.noSpaceGridLayout(new GridLayout(2,
+               // false)));
+
+               filterTxt = new Text(parent, SWT.SEARCH | SWT.ICON_CANCEL);
+               filterTxt.setMessage("Search current folder");
+               filterTxt.setLayoutData(new RowData(250, SWT.DEFAULT));
+               filterTxt.addModifyListener(new ModifyListener() {
+                       private static final long serialVersionUID = 1L;
+
+                       public void modifyText(ModifyEvent event) {
+                               modifyFilter(false);
+                       }
+               });
+               filterTxt.addKeyListener(new KeyListener() {
+                       private static final long serialVersionUID = 2533535233583035527L;
+
+                       @Override
+                       public void keyReleased(KeyEvent e) {
+                       }
+
+                       @Override
+                       public void keyPressed(KeyEvent e) {
+                               // boolean shiftPressed = (e.stateMask & SWT.SHIFT) != 0;
+                               // // boolean altPressed = (e.stateMask & SWT.ALT) != 0;
+                               // FilterEntitiesVirtualTable currTable = null;
+                               // if (currEdited != null) {
+                               // FilterEntitiesVirtualTable table =
+                               // browserCols.get(currEdited);
+                               // if (table != null && !table.isDisposed())
+                               // currTable = table;
+                               // }
+                               //
+                               // if (e.keyCode == SWT.ARROW_DOWN)
+                               // currTable.setFocus();
+                               // else if (e.keyCode == SWT.BS) {
+                               // if (filterTxt.getText().equals("")
+                               // && !(currEdited.getNameCount() == 1 ||
+                               // currEdited.equals(initialPath))) {
+                               // Path oldEdited = currEdited;
+                               // Path parentPath = currEdited.getParent();
+                               // setEdited(parentPath);
+                               // if (browserCols.containsKey(parentPath))
+                               // browserCols.get(parentPath).setSelected(oldEdited);
+                               // filterTxt.setFocus();
+                               // e.doit = false;
+                               // }
+                               // } else if (e.keyCode == SWT.TAB && !shiftPressed) {
+                               // Path uniqueChild = getOnlyChild(currEdited,
+                               // filterTxt.getText());
+                               // if (uniqueChild != null) {
+                               // // Highlight the unique chosen child
+                               // currTable.setSelected(uniqueChild);
+                               // setEdited(uniqueChild);
+                               // }
+                               // filterTxt.setFocus();
+                               // e.doit = false;
+                               // }
+                       }
+               });
+       }
+
+       private Path getOnlyChild(Path parent, String filter) {
+               try (DirectoryStream<Path> stream = Files.newDirectoryStream(currDisplayedFolder, filter + "*")) {
+                       Path uniqueChild = null;
+                       boolean moreThanOne = false;
+                       loop: for (Path entry : stream) {
+                               if (uniqueChild == null) {
+                                       uniqueChild = entry;
+                               } else {
+                                       moreThanOne = true;
+                                       break loop;
+                               }
+                       }
+                       if (!moreThanOne)
+                               return uniqueChild;
+                       return null;
+               } catch (IOException ioe) {
+                       throw new CmsException(
+                                       "Unable to determine unique child existence and get it under " + parent + " with filter " + filter,
+                                       ioe);
+               }
+       }
+
+       private void modifyFilter(boolean fromOutside) {
+               if (!fromOutside)
+                       if (currDisplayedFolder != null) {
+                               String filter = filterTxt.getText() + "*";
+                               directoryDisplayViewer.setInput(currDisplayedFolder, filter);
+                       }
+       }
+
+       private class BookmarksSelChangeListener implements ISelectionChangedListener {
+
+               @Override
+               public void selectionChanged(SelectionChangedEvent event) {
+                       IStructuredSelection selection = (IStructuredSelection) event.getSelection();
+                       if (selection.isEmpty())
+                               return;
+                       else {
+                               Path newSelected = (Path) selection.getFirstElement();
+                               if (newSelected.equals(currDisplayedFolder) && newSelected.equals(initialPath))
+                                       return;
+                               initialPath = newSelected;
+                               setInput(newSelected);
+                       }
+               }
+       }
+
+       // Simplify UI implementation
+       private void addProperty(Composite parent, String propName, String value) {
+               Label contextL = new Label(parent, SWT.NONE);
+               contextL.setText(propName + ": " + value);
+       }
+
+       private Label appendTitle(Composite parent, String value) {
+               Label titleLbl = new Label(parent, SWT.NONE);
+               titleLbl.setText(value);
+               titleLbl.setFont(EclipseUiUtils.getBoldFont(parent));
+               GridData gd = EclipseUiUtils.fillWidth();
+               gd.horizontalIndent = 5;
+               gd.verticalIndent = 5;
+               titleLbl.setLayoutData(gd);
+               return titleLbl;
+       }
+}