/**
* Selects a range of text in a text component. If the new selection is outside of the previous
* viewable rectangle, then the view is centered around the new selection.
*
* @param textArea The text component whose selection is to be centered.
* @param start The start of the range to select.
* @param end The end of the range to select.
*/
private static void selectAndPossiblyCenter(JTextArea textArea, int start, int end) {
textArea.setSelectionStart(start);
textArea.setSelectionEnd(end);
Rectangle r = null;
try {
r = textArea.modelToView(start);
if (r == null) { // Not yet visible; i.e. JUnit tests
return;
}
if (end != start) {
r = r.union(textArea.modelToView(end));
}
} catch (BadLocationException ble) { // Never happens
ble.printStackTrace();
textArea.setSelectionStart(start);
textArea.setSelectionEnd(end);
return;
}
Rectangle visible = textArea.getVisibleRect();
// If the new selection is already in the view, don't scroll,
// as that is visually jarring.
if (visible.contains(r)) {
textArea.setSelectionStart(start);
textArea.setSelectionEnd(end);
return;
}
visible.x = r.x - (visible.width - r.width) / 2;
visible.y = r.y - (visible.height - r.height) / 2;
Rectangle bounds = textArea.getBounds();
Insets i = textArea.getInsets();
bounds.x = i.left;
bounds.y = i.top;
bounds.width -= i.left + i.right;
bounds.height -= i.top + i.bottom;
if (visible.x < bounds.x) {
visible.x = bounds.x;
}
if (visible.x + visible.width > bounds.x + bounds.width) {
visible.x = bounds.x + bounds.width - visible.width;
}
if (visible.y < bounds.y) {
visible.y = bounds.y;
}
if (visible.y + visible.height > bounds.y + bounds.height) {
visible.y = bounds.y + bounds.height - visible.height;
}
textArea.scrollRectToVisible(visible);
}
public void update() {
memView.setText(machine.memToString());
r0.setText(String.format("%04X", machine.readReg(0) & 0xFFFF));
r1.setText(String.format("%04X", machine.readReg(1) & 0xFFFF));
r2.setText(String.format("%04X", machine.readReg(2) & 0xFFFF));
r3.setText(String.format("%04X", machine.readReg(3) & 0xFFFF));
r4.setText(String.format("%04X", machine.readReg(4) & 0xFFFF));
r5.setText(String.format("%04X", machine.readReg(5) & 0xFFFF));
r6.setText(String.format("%04X", machine.readReg(6) & 0xFFFF));
r7.setText(String.format("%04X", machine.readReg(7) & 0xFFFF));
d0.setText(String.format("%d", machine.readReg(0)));
d1.setText(String.format("%d", machine.readReg(1)));
d2.setText(String.format("%d", machine.readReg(2)));
d3.setText(String.format("%d", machine.readReg(3)));
d4.setText(String.format("%d", machine.readReg(4)));
d5.setText(String.format("%d", machine.readReg(5)));
d6.setText(String.format("%d", machine.readReg(6)));
d7.setText(String.format("%d", machine.readReg(7)));
cbNeg.setSelected(machine.neg());
cbZero.setSelected(machine.zero());
cbPos.setSelected(machine.pos());
status.setText(machine.status());
int line = machine.pcLine();
try {
int start = memView.getLineStartOffset(line);
int end = memView.getLineEndOffset(line);
memView.setCaretPosition(start);
memView.select(start, end);
Rectangle viewRect = memView.modelToView(start);
// Scroll to make the rectangle visible
memView.scrollRectToVisible(viewRect);
} catch (Exception e) {
}
btnStep.setEnabled(true);
btnStepOver.setEnabled(true);
btnRun.setEnabled(true);
btnStop.setEnabled(false);
}
protected void showSuggestion() {
hideSuggestion();
final int position = textarea.getCaretPosition();
Point location;
try {
location = textarea.modelToView(position).getLocation();
} catch (BadLocationException e2) {
e2.printStackTrace();
return;
}
String text = textarea.getText();
int start = Math.max(0, position - 1);
while (start > 0) {
if (!Character.isWhitespace(text.charAt(start))) {
start--;
} else {
start++;
break;
}
}
if (start > position) {
return;
}
final String subWord = text.substring(start, position);
if (subWord.length() < 2) {
return;
}
suggestion = new SuggestionPanel(textarea, position, subWord, location);
SwingUtilities.invokeLater(
new Runnable() {
@Override
public void run() {
textarea.requestFocusInWindow();
}
});
}
/**
* Selects a range of text in a text component. If the new selection is outside of the previous
* viewable rectangle, then the view is centered around the new selection.
*
* @param textArea The text component whose selection is to be centered.
* @param start The start of the range to select.
* @param end The end of the range to select.
*/
private static void selectAndPossiblyCenter(JTextArea textArea, int start, int end) {
boolean foldsExpanded = false;
if (textArea instanceof RSyntaxTextArea) {
RSyntaxTextArea rsta = (RSyntaxTextArea) textArea;
FoldManager fm = rsta.getFoldManager();
if (fm.isCodeFoldingSupportedAndEnabled()) {
foldsExpanded = fm.ensureOffsetNotInClosedFold(start);
foldsExpanded |= fm.ensureOffsetNotInClosedFold(end);
}
}
textArea.setSelectionStart(start);
textArea.setSelectionEnd(end);
Rectangle r = null;
try {
r = textArea.modelToView(start);
if (r == null) { // Not yet visible; i.e. JUnit tests
return;
}
if (end != start) {
r = r.union(textArea.modelToView(end));
}
} catch (BadLocationException ble) { // Never happens
ble.printStackTrace();
textArea.setSelectionStart(start);
textArea.setSelectionEnd(end);
return;
}
Rectangle visible = textArea.getVisibleRect();
// If the new selection is already in the view, don't scroll,
// as that is visually jarring.
if (!foldsExpanded && visible.contains(r)) {
textArea.setSelectionStart(start);
textArea.setSelectionEnd(end);
return;
}
visible.x = r.x - (visible.width - r.width) / 2;
visible.y = r.y - (visible.height - r.height) / 2;
Rectangle bounds = textArea.getBounds();
Insets i = textArea.getInsets();
bounds.x = i.left;
bounds.y = i.top;
bounds.width -= i.left + i.right;
bounds.height -= i.top + i.bottom;
if (visible.x < bounds.x) {
visible.x = bounds.x;
}
if (visible.x + visible.width > bounds.x + bounds.width) {
visible.x = bounds.x + bounds.width - visible.width;
}
if (visible.y < bounds.y) {
visible.y = bounds.y;
}
if (visible.y + visible.height > bounds.y + bounds.height) {
visible.y = bounds.y + bounds.height - visible.height;
}
textArea.scrollRectToVisible(visible);
}