@Override
public TerminalPosition getCursorLocation(ComboBox<V> comboBox) {
if (comboBox.isDropDownFocused()) {
return new TerminalPosition(comboBox.getSize().getColumns() - 1, 0);
} else {
int textInputPosition = comboBox.getTextInputPosition();
int textInputColumn =
CJKUtils.getColumnWidth(comboBox.getText().substring(0, textInputPosition));
return new TerminalPosition(textInputColumn - textVisibleLeftPosition, 0);
}
}
@Override
public TerminalSize getPreferredSize(final ComboBox<V> comboBox) {
TerminalSize size =
TerminalSize.ONE.withColumns(
(comboBox.getItemCount() == 0 ? CJKUtils.getColumnWidth(comboBox.getText()) : 0) + 2);
synchronized (comboBox) {
for (int i = 0; i < comboBox.getItemCount(); i++) {
V item = comboBox.getItem(i);
size =
size.max(
new TerminalSize(
CJKUtils.getColumnWidth(item.toString()) + 2 + 1,
1)); // +1 to add a single column of space
}
}
return size;
}
@Override
public void drawComponent(TextGUIGraphics graphics, ComboBox<V> comboBox) {
graphics.setForegroundColor(TextColor.ANSI.WHITE);
graphics.setBackgroundColor(TextColor.ANSI.BLUE);
if (comboBox.isFocused()) {
graphics.setForegroundColor(TextColor.ANSI.YELLOW);
graphics.enableModifiers(SGR.BOLD);
}
graphics.fill(' ');
int editableArea =
graphics.getSize().getColumns() - 2; // This is exclusing the 'drop-down arrow'
int textInputPosition = comboBox.getTextInputPosition();
int columnsToInputPosition =
CJKUtils.getColumnWidth(comboBox.getText().substring(0, textInputPosition));
if (columnsToInputPosition < textVisibleLeftPosition) {
textVisibleLeftPosition = columnsToInputPosition;
}
if (columnsToInputPosition - textVisibleLeftPosition >= editableArea) {
textVisibleLeftPosition = columnsToInputPosition - editableArea + 1;
}
if (columnsToInputPosition - textVisibleLeftPosition + 1 == editableArea
&& comboBox.getText().length() > textInputPosition
&& CJKUtils.isCharCJK(comboBox.getText().charAt(textInputPosition))) {
textVisibleLeftPosition++;
}
String textToDraw =
CJKUtils.fitString(comboBox.getText(), textVisibleLeftPosition, editableArea);
graphics.putString(0, 0, textToDraw);
if (comboBox.isFocused()) {
graphics.disableModifiers(SGR.BOLD);
}
graphics.setForegroundColor(TextColor.ANSI.BLACK);
graphics.setBackgroundColor(TextColor.ANSI.WHITE);
graphics.putString(editableArea, 0, "|" + Symbols.ARROW_DOWN);
}