Пример #1
0
  /**
   * Notifies all views of a context change.
   *
   * @param nodes new context set (may be {@code null} if root nodes are addressed)
   * @param quick quick switch
   * @param vw the calling view
   */
  public void context(final Nodes nodes, final boolean quick, final View vw) {
    final Context ctx = gui.context;

    // add new entry if current node set has not been cached yet
    final Nodes newn = nodes.checkRoot();
    final Nodes empty = new Nodes(new int[0], ctx.data(), ctx.marked.ftpos);
    final Nodes curr = quick ? ctx.current() : null;
    final Nodes cmp = quick ? curr : ctx.marked;
    if (cont[hist] == null ? cmp != null : cmp == null || !cont[hist].sameAs(cmp)) {
      checkHist();
      if (quick) {
        // store history entry
        queries[hist] = "";
        marked[hist] = new Nodes(ctx.data());
        // add current entry
        cont[++hist] = curr;
      } else {
        // store history entry
        final String in = gui.input.getText();
        queries[hist] = in;
        marked[hist] = ctx.marked;
        // add current entry
        cont[++hist] = newn;
        queries[hist] = in;
        marked[hist] = empty;
      }
      histsize = hist;
    }
    ctx.set(newn, empty);

    for (final View v : view) if (v != vw && v.visible()) v.refreshContext(true, quick);
    gui.refreshControls();
  }
Пример #2
0
    @Override
    public void execute(final GUI gui) {
      final boolean rt = gui.gprop.invert(GUIProp.FILTERRT);
      gui.stop();
      // refresh buttons in input bar
      gui.refreshControls();
      // refresh editor buttons
      gui.editor.refreshMark();

      final Context ctx = gui.context;
      final boolean root = ctx.root();
      final Data data = ctx.data();
      if (!rt) {
        if (!root) {
          gui.notify.context(new Nodes(0, data), true, null);
          gui.notify.mark(ctx.current(), null);
        }
      } else {
        if (root) {
          gui.notify.mark(new Nodes(data), null);
        } else {
          final Nodes mark = ctx.marked;
          ctx.marked = new Nodes(data);
          gui.notify.context(mark, true, null);
        }
      }
    }
Пример #3
0
 @Override
 public void execute(final GUI gui) {
   final Context ctx = gui.context;
   Nodes marked = ctx.marked;
   if (marked.size() == 0) {
     final int pre = gui.context.focused;
     if (pre == -1) return;
     marked = new Nodes(pre, ctx.data());
   }
   gui.notify.context(marked, false, null);
 }
Пример #4
0
  /**
   * Notifies all views of a selection change. The mode flag determines what happens:
   *
   * <ul>
   *   <li>0: set currently focused node as marked node
   *   <li>1: add currently focused node
   *   <li>2: toggle currently focused node
   * </ul>
   *
   * @param mode mark mode
   * @param vw the calling view
   */
  public void mark(final int mode, final View vw) {
    final int f = gui.context.focused;
    if (f == -1) return;

    final Context ctx = gui.context;
    Nodes nodes = ctx.marked;
    if (mode == 0) {
      nodes = new Nodes(f, ctx.data());
    } else if (mode == 1) {
      nodes.union(new int[] {f});
    } else {
      nodes.toggle(f);
    }
    mark(nodes, vw);
  }
Пример #5
0
  /**
   * Removes existing history entries and sets an initial entry.
   *
   * @param ctx database context
   * @return {@link Data} reference, or {@code null}
   */
  private Data initHistory(final Context ctx) {
    for (int h = 0; h < histsize; h++) {
      marked[h] = null;
      cont[h] = null;
      queries[h] = null;
    }
    hist = 0;
    histsize = 0;

    final Data data = ctx.data();
    if (data != null) {
      // new database opened
      marked[0] = new Nodes(data);
      queries[0] = "";
    }
    return data;
  }
Пример #6
0
 @Override
 public void execute(final GUI gui) {
   // skip operation for root context
   final Context ctx = gui.context;
   if (ctx.root()) return;
   // check if all nodes are document nodes
   boolean doc = true;
   final Data data = ctx.data();
   for (final int pre : ctx.current().pres) doc &= data.kind(pre) == Data.DOC;
   if (doc) {
     // if yes, jump to database root
     ctx.update();
     gui.notify.context(ctx.current(), false, null);
   } else {
     // otherwise, jump to parent nodes
     gui.execute(new Cs(".."));
   }
 }
Пример #7
0
  /**
   * Executes the command, prints the result to the specified output stream and returns a success
   * flag.
   *
   * @param ctx database context
   * @param os output stream
   * @return success flag. The {@link #info()} method returns information on a potential exception
   */
  private boolean exec(final Context ctx, final OutputStream os) {
    // check if data reference is available
    final Data dt = ctx.data();
    if (dt == null && data) return error(NO_DB_OPENED);

    // check permissions
    if (!ctx.perm(perm, dt != null ? dt.meta : null)) return error(PERM_REQUIRED_X, perm);

    // set updating flag
    updating = updating(ctx);

    try {
      // register process
      ctx.register(this);
      // run command and return success flag
      return run(ctx, os);
    } finally {
      // guarantee that process will be unregistered
      ctx.unregister(this);
    }
  }
Пример #8
0
 /**
  * Closes the specified database if it is currently opened and only pinned once.
  *
  * @param ctx database context
  * @param db database to be closed
  * @return closed flag
  */
 protected static boolean close(final Context ctx, final String db) {
   final boolean close =
       ctx.data() != null && db.equals(ctx.data().meta.name) && ctx.dbs.pins(db) == 1;
   return close && new Close().run(ctx);
 }