/** Notifies all views of a data reference change. */
public void init() {
final Data data = initHistory(gui.context);
if (data != null) {
// if a large database is opened, the user is asked if complex
/// visualizations should be closed first
final long size = data.meta.dbsize();
boolean open = false;
for (final View v : view) open |= v.visible() && v.db();
if (open
&& size > LARGEDB
&& BaseXDialog.confirm(gui, Util.info(H_LARGE_DB, Performance.format(size)))) {
for (final View v : view) if (v.visible() && v.db()) v.visible(false);
}
} else {
// database closed: close open dialogs
for (final Window w : gui.getOwnedWindows()) {
if (w.isVisible() && w instanceof BaseXDialog) ((BaseXDialog) w).cancel();
}
}
gui.context.focused = -1;
for (final View v : view) v.refreshInit();
gui.layoutViews();
gui.setTitle(data != null ? data.meta.name : null);
}
/** Notifies all views of updates in the data structure. */
public void update() {
final Data data = initHistory(gui.context);
if (data == null) return;
gui.context.marked = new Nodes(data);
for (final View v : view) if (v.visible()) v.refreshUpdate();
gui.refreshControls();
}
/**
* 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();
}
/**
* 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();
}
/**
* Notifies all views of a focus change.
*
* @param pre focused pre value
* @param vw the calling view
*/
public void focus(final int pre, final View vw) {
if (gui.context.focused == pre) return;
gui.context.focused = pre;
for (final View v : view) if (v != vw && v.visible()) v.refreshFocus();
if (pre != -1) {
gui.status.setText(Token.string(ViewData.path(gui.context.data(), pre)));
}
}
/**
* 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();
}