public void clearLines(final int beginY, final int endY) {
myTerminalTextBuffer.lock();
try {
myTerminalTextBuffer.clearLines(beginY, endY);
} finally {
myTerminalTextBuffer.unlock();
}
}
@Override
public void deleteLines(int count) {
myTerminalTextBuffer.lock();
try {
myTerminalTextBuffer.deleteLines(myCursorY - 1, count, myScrollRegionBottom);
} finally {
myTerminalTextBuffer.unlock();
}
}
@Override
public void scrollDown(int count) {
myTerminalTextBuffer.lock();
try {
scrollArea(myScrollRegionTop, scrollingRegionSize(), count);
} finally {
myTerminalTextBuffer.unlock();
}
}
@Override
public void insertBlankCharacters(int count) {
myTerminalTextBuffer.lock();
try {
final int extent = Math.min(count, myTerminalWidth - myCursorX);
myTerminalTextBuffer.insertBlankCharacters(myCursorX, myCursorY - 1, extent);
} finally {
myTerminalTextBuffer.unlock();
}
}
@Override
public void cursorUp(final int countY) {
myTerminalTextBuffer.lock();
try {
myCursorY -= countY;
myCursorY = Math.max(myCursorY, scrollingRegionTop());
myDisplay.setCursor(myCursorX, myCursorY);
} finally {
myTerminalTextBuffer.unlock();
}
}
@Override
public void cursorDown(final int dY) {
myTerminalTextBuffer.lock();
try {
myCursorY += dY;
myCursorY = Math.min(myCursorY, scrollingRegionBottom());
myDisplay.setCursor(myCursorX, myCursorY);
} finally {
myTerminalTextBuffer.unlock();
}
}
private void wrapLines() {
if (myCursorX >= myTerminalWidth) {
myCursorX = 0;
// clear the end of the line in the text buffer
myTerminalTextBuffer.getLine(myCursorY - 1).deleteCharacters(myTerminalWidth);
if (isAutoWrap()) {
myTerminalTextBuffer.getLine(myCursorY - 1).setWrapped(true);
myCursorY += 1;
}
}
}
@Override
public void eraseCharacters(int count) {
// Clear the next n characters on the cursor's line, including the cursor's
// position.
myTerminalTextBuffer.lock();
try {
final int extent = Math.min(count, myTerminalWidth - myCursorX);
myTerminalTextBuffer.eraseCharacters(myCursorX, myCursorX + extent, myCursorY - 1);
} finally {
myTerminalTextBuffer.unlock();
}
}
private void doWriteString(String string) {
myTerminalTextBuffer.lock();
try {
wrapLines();
scrollY();
myTerminalTextBuffer.writeString(myCursorX, myCursorY, string);
myCursorX += string.length();
finishText();
} finally {
myTerminalTextBuffer.unlock();
}
}
@Override
public void fillScreen(final char c) {
myTerminalTextBuffer.lock();
try {
final char[] chars = new char[myTerminalWidth];
Arrays.fill(chars, c);
final String str = new String(chars);
for (int row = 1; row <= myTerminalHeight; row++) {
myTerminalTextBuffer.writeString(0, row, str);
}
} finally {
myTerminalTextBuffer.unlock();
}
}
@Override
public void nextLine() {
myTerminalTextBuffer.lock();
try {
myCursorX = 0;
if (myCursorY == myScrollRegionBottom) {
scrollArea(myScrollRegionTop, scrollingRegionSize(), -1);
} else {
myCursorY += 1;
}
myDisplay.setCursor(myCursorX, myCursorY);
} finally {
myTerminalTextBuffer.unlock();
}
}
public void scrollY() {
myTerminalTextBuffer.lock();
try {
if (myCursorY > myScrollRegionBottom) {
final int dy = myScrollRegionBottom - myCursorY;
myCursorY = myScrollRegionBottom;
scrollArea(myScrollRegionTop, scrollingRegionSize(), dy);
myDisplay.setCursor(myCursorX, myCursorY);
}
if (myCursorY < myScrollRegionTop) {
myCursorY = myScrollRegionTop;
}
} finally {
myTerminalTextBuffer.unlock();
}
}
private void writeCharacters(final char[] chosenBuffer, final int start, final int length) {
myTerminalTextBuffer.lock();
try {
wrapLines();
scrollY();
if (length != 0) {
myTerminalTextBuffer.writeBytes(myCursorX, myCursorY, chosenBuffer, start, length);
}
myCursorX += CharUtils.getTextLength(chosenBuffer, start, length);
finishText();
} finally {
myTerminalTextBuffer.unlock();
}
}
@Override
public void reverseIndex() {
// Moves the cursor up one line in the same
// column. If the cursor is at the top margin,
// the page scrolls down.
myTerminalTextBuffer.lock();
try {
if (myCursorY == myScrollRegionTop) {
scrollArea(myScrollRegionTop, scrollingRegionSize(), 1);
} else {
myCursorY -= 1;
myDisplay.setCursor(myCursorX, myCursorY);
}
} finally {
myTerminalTextBuffer.unlock();
}
}
@Override
public void index() {
// Moves the cursor down one line in the
// same column. If the cursor is at the
// bottom margin, the page scrolls up
myTerminalTextBuffer.lock();
try {
if (myCursorY == myScrollRegionBottom) {
scrollArea(myScrollRegionTop, scrollingRegionSize(), -1);
} else {
myCursorY += 1;
myDisplay.setCursor(myCursorX, myCursorY);
}
} finally {
myTerminalTextBuffer.unlock();
}
}
@Override
public void eraseInDisplay(final int arg) {
myTerminalTextBuffer.lock();
try {
int beginY;
int endY;
switch (arg) {
case 0:
// Initial line
if (myCursorX < myTerminalWidth) {
myTerminalTextBuffer.eraseCharacters(myCursorX, myTerminalWidth, myCursorY - 1);
}
// Rest
beginY = myCursorY;
endY = myTerminalHeight;
break;
case 1:
// initial line
myTerminalTextBuffer.eraseCharacters(0, myCursorX + 1, myCursorY - 1);
beginY = 0;
endY = myCursorY - 1;
break;
case 2:
beginY = 0;
endY = myTerminalHeight;
break;
default:
LOG.error("Unsupported erase in display mode:" + arg);
beginY = 1;
endY = 1;
break;
}
// Rest of lines
if (beginY != endY) {
clearLines(beginY, endY);
}
} finally {
myTerminalTextBuffer.unlock();
}
}
public void eraseInLine(int arg) {
myTerminalTextBuffer.lock();
try {
switch (arg) {
case 0:
if (myCursorX < myTerminalWidth) {
myTerminalTextBuffer.eraseCharacters(myCursorX, myTerminalWidth, myCursorY - 1);
}
// delete to the end of line : line is no more wrapped
myTerminalTextBuffer.getLine(myCursorY - 1).setWrapped(false);
break;
case 1:
final int extent = Math.min(myCursorX + 1, myTerminalWidth);
myTerminalTextBuffer.eraseCharacters(0, extent, myCursorY - 1);
break;
case 2:
myTerminalTextBuffer.eraseCharacters(0, myTerminalWidth, myCursorY - 1);
break;
default:
LOG.error("Unsupported erase in line mode:" + arg);
break;
}
} finally {
myTerminalTextBuffer.unlock();
}
}
@Override
public void reset() {
myGraphicSetState.resetState();
myStyleState.reset();
myTerminalTextBuffer.clearAll();
myDisplay.setScrollingEnabled(true);
initModes();
initMouseModes();
cursorPosition(1, 1);
}
@Override
public void horizontalTab() {
if (myCursorX >= myTerminalWidth) {
return;
}
int length = myTerminalTextBuffer.getLine(myCursorY - 1).getText().length();
int stop = myTabulator.nextTab(myCursorX);
myCursorX = Math.max(myCursorX, length);
if (myCursorX < stop) {
char[] chars = new char[stop - myCursorX];
Arrays.fill(chars, CharUtils.EMPTY_CHAR);
doWriteString(new String(chars));
} else {
myCursorX = stop;
}
myDisplay.setCursor(myCursorX, myCursorY);
}
private void scrollArea(int scrollRegionTop, int scrollRegionSize, int dy) {
myDisplay.scrollArea(scrollRegionTop, scrollRegionSize, dy);
myTerminalTextBuffer.scrollArea(scrollRegionTop, dy, scrollRegionTop + scrollRegionSize - 1);
}
@Override
public void useAlternateBuffer(boolean enabled) {
myTerminalTextBuffer.useAlternateBuffer(enabled);
myDisplay.setScrollingEnabled(!enabled);
}
