public String previewCommand(String userCommand) {
lastPreviewedCommand = Parser.parse(userCommand);
lastPreviewedCommand.setPreview(true);
return runCommand(lastPreviewedCommand);
}
private String execute(Command command) {
return command.run(ui, taskEngine);
}
// @@author A0124321Y
private String runCommand(Command command) {
String feedback = null;
switch (command.getType()) {
case ADD_DREAM:
case ADD_DEADLINE:
case ADD_EVENT:
feedback = execute(command);
if (!command.isPreview()) {
updateView(ViewType.SHOW_OUTSTANDING);
}
break;
case EDIT:
case EDIT_TO_DREAM:
feedback = execute(command);
if (!command.isPreview()) {
updateView();
}
break;
case EDIT_PARTIAL:
feedback = execute(command);
break;
case DELETE:
feedback = execute(command);
if (!command.isPreview()) {
updateView();
}
break;
case DONE:
feedback = execute(command);
if (!command.isPreview()) {
updateView();
}
break;
case UNDO:
feedback = execute(command);
if (!command.isPreview()) {
updateView();
}
break;
case SEARCH:
case SEARCH_ON:
case SEARCH_DUE:
case SEARCH_RANGE:
feedback = execute(command);
if (!command.isPreview()) {
searchString = command.getSearchStr();
searchTerm = command.getSearchTerm();
searchStartDate = command.getSearchStartDate();
searchEndDate = command.getSearchEndDate();
searchShowDone = command.getSearchShowDone();
updateView(ViewType.SHOW_SEARCH_RESULTS);
}
break;
case SET_PATH:
feedback = execute(command);
break;
case SHOW_OUTSTANDING:
feedback = execute(command);
if (!command.isPreview()) {
updateView(ViewType.SHOW_OUTSTANDING);
}
break;
case SHOW_DONE:
feedback = execute(command);
if (!command.isPreview()) {
updateView(ViewType.SHOW_DONE);
}
break;
case SHOW_ALL:
feedback = execute(command);
if (!command.isPreview()) {
updateView(ViewType.SHOW_ALL);
}
break;
case SHOW_SUMMARY:
feedback = execute(command);
if (!command.isPreview()) {
updateView(ViewType.SHOW_SUMMARY);
}
break;
case HELP:
feedback = execute(command);
break;
case INVALID:
feedback = execute(command);
break;
case EXIT:
if (!command.isPreview() && !exit()) {
feedback = Feedback.FEEDBACK_TRY_AGAIN;
} else {
feedback = FeedbackExit.EXIT;
}
break;
default:
break;
}
return feedback;
}
// Process key press events
private EventHandler<KeyEvent> createKeyPressHandler() {
return (keyEvent) -> {
// Remove initial splash overlay
ui.hideSplashOverlay();
switch (keyEvent.getCode()) {
// Main command execution flow
case ENTER:
{
// Whitespace command
if (ui.getInput().trim().isEmpty()) {
ui.clearInput();
ui.hideHelpOverlay();
return;
}
// Hide help unless it's a help or exit command
if (!lastPreviewedCommand.getType().equals(CommandType.HELP)
&& !lastPreviewedCommand.getType().equals(CommandType.EXIT)) {
ui.hideHelpOverlay();
}
// All the work happens here!
String feedback = executeLastPreviewedCommand();
// Clear input box and display feedback
// ClearInput must come before setStatus as user input listener
// resets status when input is cleared
ui.clearInput();
ui.setExecuteStatus(feedback);
return;
}
// Edit description autocompletion
case TAB:
{
if (!hasLastPreviewedCommand()) {
return;
}
Command command = lastPreviewedCommand;
if (command.getType() != CommandType.EDIT_PARTIAL) {
return;
}
int lineNumber = lastPreviewedCommand.getLineNumber();
if (!isValidLineNumber(lineNumber)) {
return;
}
ui.setInput(
ui.getInput().trim() + " " + getTaskFromLineNumber(lineNumber).getDescription());
return;
}
// Scrolling
case UP:
{
ui.scrollUpScreen();
return;
}
case DOWN:
{
ui.scrollDownScreen();
return;
}
// Show help
case F1:
{
ui.showHelpOverlay();
if (ui.getInput().isEmpty()) {
ui.setPreviewStatus(FeedbackHelp.HELP);
}
return;
}
// Activate next help page using left/right keys
// (but only when the input box is empty)
case LEFT:
case RIGHT:
{
if (ui.getInput().isEmpty()) {
ui.nextHelpPage();
}
return;
}
// Hide help
case ESCAPE:
{
ui.hideHelpOverlay();
if (ui.getInput().trim().isEmpty()) {
ui.setPreviewStatus(FEEDBACK_READY);
}
return;
}
default:
break;
}
};
}
public String executeLastPreviewedCommand() {
assert (lastPreviewedCommand != null);
lastPreviewedCommand.setPreview(false);
return runCommand(lastPreviewedCommand);
}