*/
public final class TEditorWidget extends TWidget {
+ /**
+ * The number of lines to scroll on mouse wheel up/down.
+ */
+ private static final int wheelScrollSize = 3;
+
/**
* The document being edited.
*/
}
}
}
-
}
/**
@Override
public void onMouseDown(final TMouseEvent mouse) {
if (mouse.isMouseWheelUp()) {
- if (topLine > 0) {
- topLine--;
- alignDocument(false);
+ for (int i = 0; i < wheelScrollSize; i++) {
+ if (topLine > 0) {
+ topLine--;
+ alignDocument(false);
+ }
}
return;
}
if (mouse.isMouseWheelDown()) {
- if (topLine < document.getLineCount() - 1) {
- topLine++;
- alignDocument(true);
+ for (int i = 0; i < wheelScrollSize; i++) {
+ if (topLine < document.getLineCount() - 1) {
+ topLine++;
+ alignDocument(true);
+ }
}
return;
}
// Set the row and column
int newLine = topLine + mouse.getY();
int newX = leftColumn + mouse.getX();
- if (newLine > document.getLineCount()) {
+ if (newLine > document.getLineCount() - 1) {
// Go to the end
document.setLineNumber(document.getLineCount() - 1);
document.end();
- if (document.getLineCount() > getHeight()) {
- setCursorY(getHeight() - 1);
+ if (newLine > document.getLineCount() - 1) {
+ setCursorY(document.getLineCount() - 1 - topLine);
} else {
- setCursorY(document.getLineCount() - 1);
+ setCursorY(mouse.getY());
}
alignCursor();
return;
document.end();
alignCursor();
} else {
+ document.setCursor(newX);
setCursorX(mouse.getX());
}
return;
// Need to move topLine to bring document back into view.
if (topLineIsTop) {
topLine = line - (getHeight() - 1);
+ if (topLine < 0) {
+ topLine = 0;
+ }
+ assert (topLine >= 0);
} else {
topLine = line;
+ assert (topLine >= 0);
}
}
*/
// Document is in view, let's set cursorY
+ assert (line >= topLine);
setCursorY(line - topLine);
alignCursor();
}
*/
private void alignDocument(final boolean topLineIsTop) {
int line = document.getLineNumber();
+ int cursor = document.getCursor();
if ((line < topLine) || (line > topLine + getHeight() - 1)) {
// Need to move document to ensure it fits view.
} else {
document.setLineNumber(topLine + (getHeight() - 1));
}
+ if (cursor < document.getCurrentLine().getDisplayLength()) {
+ document.setCursor(cursor);
+ }
}
/*
/*
System.err.println("document cursor " + document.getCursor() +
" leftColumn " + leftColumn);
- */
+ */
+
setCursorX(document.getCursor() - leftColumn);
}
@Override
public void onKeypress(final TKeypressEvent keypress) {
if (keypress.equals(kbLeft)) {
- if (document.left()) {
- alignCursor();
- }
+ document.left();
+ alignTopLine(false);
} else if (keypress.equals(kbRight)) {
- if (document.right()) {
- alignCursor();
- }
+ document.right();
+ alignTopLine(true);
} else if (keypress.equals(kbUp)) {
document.up();
alignTopLine(false);
} else if (keypress.equals(kbIns)) {
document.setOverwrite(!document.getOverwrite());
} else if (keypress.equals(kbDel)) {
- // TODO: join lines
document.del();
alignCursor();
} else if (keypress.equals(kbBackspace)) {
document.backspace();
+ alignTopLine(false);
+ } else if (keypress.equals(kbTab)) {
+ // TODO: tab character. For now just add spaces until we hit
+ // modulo 8.
+ for (int i = document.getCursor(); (i + 1) % 8 != 0; i++) {
+ document.addChar(' ');
+ }
alignCursor();
} else if (keypress.equals(kbEnter)) {
- // TODO: split lines
+ document.enter();
+ alignTopLine(true);
} else if (!keypress.getKey().isFnKey()
&& !keypress.getKey().isAlt()
&& !keypress.getKey().isCtrl()
* @param row the new editing row number. Row 1 is the first row.
*/
public void setEditingRowNumber(final int row) {
- document.setLineNumber(row - 1);
+ assert (row > 0);
+ if ((row > 0) && (row < document.getLineCount())) {
+ document.setLineNumber(row - 1);
+ alignTopLine(true);
+ }
}
/**
* column.
*/
public void setEditingColumnNumber(final int column) {
- document.setCursor(column - 1);
+ if ((column > 0) && (column < document.getLineLength())) {
+ document.setCursor(column - 1);
+ alignCursor();
+ }
}
/**