@Override
public void enterMode(final ModeSwitchHint... hints) throws CommandExecutionException {
boolean fixSelection = false;
boolean keepSelection = false;
boolean recallSelection = false;
ExecuteCommandHint onEnterCommand = null;
for (final ModeSwitchHint hint : hints) {
if (hint == FIX_SELECTION_HINT) {
keepSelection = true;
fixSelection = true;
}
if (hint == KEEP_SELECTION_HINT) {
keepSelection = true;
}
if (hint == RECALL_SELECTION_HINT) {
recallSelection = true;
}
if (hint instanceof ExecuteCommandHint) {
onEnterCommand = (ExecuteCommandHint) hint;
}
}
if (recallSelection) {
Selection previousSel = editorAdaptor.getLastActiveSelection();
CursorService cursorService = editorAdaptor.getCursorService();
Position from = cursorService.getMark(CursorService.INTERNAL_LAST_SELECT_FROM_MARK);
Position to = cursorService.getMark(CursorService.INTERNAL_LAST_SELECT_TO_MARK);
if (previousSel == null) {
VrapperLog.info("Previous selection was null, selection not recalled.");
} else {
Selection updatedSel = updateSelection(editorAdaptor, previousSel, from, to);
// Makes sure to set the sticky column.
editorAdaptor.setPosition(updatedSel.getTo(), StickyColumnPolicy.ON_CHANGE);
editorAdaptor.setSelection(updatedSel);
}
} else if (!keepSelection) {
editorAdaptor.setSelection(null);
}
Selection currentSelection = editorAdaptor.getSelection();
if (fixSelection && currentSelection != null) {
editorAdaptor.setSelection(fixSelection(currentSelection));
}
super.enterMode(hints);
if (onEnterCommand != null) {
try {
super.executeCommand(onEnterCommand.getCommand());
} catch (final CommandExecutionException e) {
editorAdaptor.getUserInterfaceService().setErrorMessage(e.getMessage());
}
}
fixCaret();
}
private Selection updateSelection(
EditorAdaptor editorAdaptor, Selection previousSel, Position from, Position to) {
// Can happen if the user deleted a piece of text containing the mark or indented.
// Also frequently happens during tests, as the stubbed mark service doesn't keep marks.
if (from == null && to == null) {
VrapperLog.info("Previous selection marks are null, selection might be wrong.");
} else if (from == null) {
VrapperLog.info("Previous selection 'from' mark is null, selection might be wrong.");
} else if (to == null) {
VrapperLog.info("Previous selection 'to' mark is null, selection might be wrong.");
}
if (from == null) {
from = previousSel.getFrom();
}
if (to == null) {
to = previousSel.getTo();
}
return previousSel.reset(editorAdaptor, from, to);
}