Esempio n. 1
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  /**
   * 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();
  }
Esempio n. 2
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 /**
  * Notifies all views of a selection change.
  *
  * @param mark marked nodes
  * @param vw the calling view
  */
 public void mark(final Nodes mark, final View vw) {
   final Context ctx = gui.context;
   ctx.marked = mark;
   for (final View v : view) if (v != vw && v.visible()) v.refreshMark();
   gui.filter.setEnabled(mark.size() != 0);
   gui.refreshControls();
 }
Esempio n. 3
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  /**
   * 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);
  }
Esempio n. 4
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  /**
   * Moves around in the internal history and notifies all views of a context change.
   *
   * @param forward move forward or backward
   */
  public void hist(final boolean forward) {
    final Context ctx = gui.context;
    final String query;
    if (forward) {
      if (hist == histsize) return;
      query = queries[++hist];
    } else {
      if (hist == 0) return;
      marked[hist] = ctx.marked;
      query = queries[--hist];
    }
    ctx.set(cont[hist], marked[hist]);

    gui.input.setText(query);
    for (final View v : view) if (v.visible()) v.refreshContext(forward, false);
    gui.refreshControls();
  }
Esempio n. 5
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  /**
   * 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;
  }