public CharPos charat(Coord c) {
if (c.y < -sb.val) {
if (msgs.size() < 1) return (null);
Message msg = msgs.get(0);
if (!(msg.text() instanceof RichText)) return (null);
RichText.TextPart fp = null;
for (RichText.Part part = ((RichText) msg.text()).parts; part != null; part = part.next) {
if (part instanceof RichText.TextPart) {
fp = (RichText.TextPart) part;
break;
}
}
if (fp == null) return (null);
return (new CharPos(msg, fp, TextHitInfo.leading(0)));
}
Coord hc = new Coord();
Message msg = messageat(c, hc);
if ((msg == null) || !(msg.text() instanceof RichText)) return (null);
RichText rt = (RichText) msg.text();
RichText.Part p = rt.partat(hc);
if (p == null) {
RichText.TextPart lp = null;
for (RichText.Part part = ((RichText) msg.text()).parts; part != null; part = part.next) {
if (part instanceof RichText.TextPart) lp = (RichText.TextPart) part;
}
if (lp == null) return (null);
return (new CharPos(msg, lp, TextHitInfo.trailing(lp.end - lp.start - 1)));
}
if (!(p instanceof RichText.TextPart)) return (null);
RichText.TextPart tp = (RichText.TextPart) p;
return (new CharPos(msg, tp, tp.charat(hc)));
}
protected void selected(CharPos start, CharPos end) {
StringBuilder buf = new StringBuilder();
synchronized (msgs) {
boolean sel = false;
for (Message msg : msgs) {
if (!(msg.text() instanceof RichText)) continue;
RichText rt = (RichText) msg.text();
RichText.Part part = null;
if (sel) {
part = rt.parts;
} else if (msg == start.msg) {
sel = true;
for (part = rt.parts; part != null; part = part.next) {
if (part == start.part) break;
}
}
if (sel) {
for (; part != null; part = part.next) {
if (!(part instanceof RichText.TextPart)) continue;
RichText.TextPart tp = (RichText.TextPart) part;
CharacterIterator iter = tp.ti();
int sch;
if (tp == start.part) sch = tp.start + start.ch.getInsertionIndex();
else sch = tp.start;
int ech;
if (tp == end.part) ech = tp.start + end.ch.getInsertionIndex();
else ech = tp.end;
for (int i = sch; i < ech; i++) buf.append(iter.setIndex(i));
if (part == end.part) {
sel = false;
break;
}
buf.append(' ');
}
if (sel) buf.append('\n');
}
if (msg == end.msg) break;
}
}
Clipboard cl;
if ((cl = java.awt.Toolkit.getDefaultToolkit().getSystemSelection()) == null)
cl = java.awt.Toolkit.getDefaultToolkit().getSystemClipboard();
try {
final CharPos ownsel = selstart;
cl.setContents(
new StringSelection(buf.toString()),
new ClipboardOwner() {
public void lostOwnership(Clipboard cl, Transferable tr) {
if (selstart == ownsel) selstart = selend = null;
}
});
} catch (IllegalStateException e) {
}
}
private void drawsel(GOut g, Message msg, int y) {
RichText rt = (RichText) msg.text();
boolean sel = msg != selstart.msg;
for (RichText.Part part = rt.parts; part != null; part = part.next) {
if (!(part instanceof RichText.TextPart)) continue;
RichText.TextPart tp = (RichText.TextPart) part;
if (tp.start == tp.end) continue;
TextHitInfo a, b;
if (sel) {
a = TextHitInfo.leading(0);
} else if (tp == selstart.part) {
a = selstart.ch;
sel = true;
} else {
continue;
}
if (tp == selend.part) {
sel = false;
b = selend.ch;
} else {
b = TextHitInfo.trailing(tp.end - tp.start - 1);
}
Coord ul = new Coord(tp.x + (int) tp.advance(0, a.getInsertionIndex()), tp.y + y);
Coord sz =
new Coord((int) tp.advance(a.getInsertionIndex(), b.getInsertionIndex()), tp.height());
g.chcolor(0, 0, 255, 255);
g.frect(ul, sz);
g.chcolor();
if (!sel) break;
}
}