/*
* Copyright 2012 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Eclipse Public License version 1.0, available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package org.jboss.aesh.edit;
import org.jboss.aesh.edit.actions.Action;
import org.jboss.aesh.edit.actions.Operation;
import org.jboss.aesh.terminal.Key;
/**
* @author Ståle W. Pedersen <stale.pedersen@jboss.org>
*/
public class ViEditMode implements EditMode {
private Action mode;
private Action previousMode;
private Operation previousAction;
private KeyOperationManager operationManager;
public ViEditMode(KeyOperationManager operations) {
mode = Action.EDIT;
previousMode = Action.EDIT;
this.operationManager = operations;
}
public boolean isInEditMode() {
return (mode == Action.EDIT);
}
private void switchEditMode() {
if(mode == Action.EDIT)
mode = Action.MOVE;
else
mode = Action.EDIT;
}
private boolean isDeleteMode() {
return (mode == Action.DELETE);
}
private boolean isChangeMode() {
return (mode == Action.CHANGE);
}
private boolean isInReplaceMode() {
return (mode == Action.REPLACE);
}
private boolean isYankMode() {
return (mode == Action.YANK);
}
private Operation saveAction(Operation action) {
previousMode = mode;
//only save action for redo if its something else than move
if(action.getAction() != Action.MOVE)
previousAction = action;
//if we've done a delete/change/yank we must switch back to move
if(isDeleteMode() || isYankMode())
mode = Action.MOVE;
if(isChangeMode())
mode = Action.EDIT;
return action;
}
@Override
public Operation parseInput(Key in, String buffer) {
KeyOperation currentOperation = operationManager.findOperation(in);
if(currentOperation != null)
return findOperation(currentOperation, buffer);
else if(mode == Action.SEARCH) {
return Operation.SEARCH_INPUT;
}
else if(isInEditMode())
return Operation.EDIT;
else
return Operation.NO_ACTION;
}
private Operation findOperation(KeyOperation currentOperation, String buffer) {
//search mode need special handling
if(mode == Action.SEARCH) {
if(currentOperation.getOperation() == Operation.NEW_LINE) {
mode = Action.EDIT;
return Operation.SEARCH_END;
}
else if(currentOperation.getOperation() == Operation.SEARCH_PREV) {
return Operation.SEARCH_PREV_WORD;
}
else if(currentOperation.getOperation() == Operation.SEARCH_NEXT_WORD) {
return Operation.SEARCH_NEXT_WORD;
}
else if(currentOperation.getOperation() == Operation.DELETE_PREV_CHAR) {
return Operation.SEARCH_DELETE;
}
else if(currentOperation.getOperation() == Operation.ESCAPE) {
mode = Action.EDIT;
return Operation.SEARCH_EXIT;
}
// search input
else {
return Operation.SEARCH_INPUT;
}
} // end search mode
if(isInReplaceMode()) {
if( currentOperation.getOperation() == Operation.ESCAPE) {
mode = Action.MOVE;
return Operation.NO_ACTION;
}
else {
mode = Action.MOVE;
return saveAction(Operation.REPLACE);
}
}
Operation operation = currentOperation.getOperation();
Action workingMode = currentOperation.getWorkingMode();
//if ctrl-d is pressed on an empty line we need to return logout
//else return new_line
if(operation == Operation.EXIT) {
if(buffer.isEmpty())
return operation;
else
return Operation.NEW_LINE;
}
if(operation == Operation.NEW_LINE) {
mode = Action.EDIT; //set to edit after a newline
return Operation.NEW_LINE;
}
else if(operation == Operation.REPLACE && !isInEditMode()) {
mode = Action.REPLACE;
return Operation.NO_ACTION;
}
else if(operation == Operation.DELETE_PREV_CHAR && workingMode == Action.NO_ACTION) {
if(isInEditMode())
return Operation.DELETE_PREV_CHAR;
else
return Operation.MOVE_PREV_CHAR;
}
else if(operation == Operation.DELETE_NEXT_CHAR && workingMode == Action.COMMAND) {
if(isInEditMode())
return Operation.NO_ACTION;
else
return saveAction(Operation.DELETE_NEXT_CHAR);
}
else if(operation == Operation.COMPLETE) {
if(isInEditMode())
return Operation.COMPLETE;
else
return Operation.NO_ACTION;
}
else if(operation == Operation.ESCAPE) {
switchEditMode();
if(isInEditMode())
return Operation.NO_ACTION;
else
return Operation.MOVE_PREV_CHAR;
}
else if (operation == Operation.SEARCH_PREV) {
mode = Action.SEARCH;
return Operation.SEARCH_PREV;
}
else if(operation == Operation.CLEAR)
return Operation.CLEAR;
//make sure that this only works for working more == Action.EDIT
else if(operation == Operation.MOVE_PREV_CHAR && workingMode.equals(Action.EDIT))
return Operation.MOVE_PREV_CHAR;
else if(operation == Operation.MOVE_NEXT_CHAR && workingMode.equals(Action.EDIT))
return Operation.MOVE_NEXT_CHAR;
else if(operation == Operation.HISTORY_PREV && workingMode.equals(Action.EDIT))
return operation;
else if(operation == Operation.HISTORY_NEXT && workingMode.equals(Action.EDIT))
return operation;
else if(operation == Operation.MOVE_BEGINNING && workingMode.equals(Action.EDIT)) //home
return operation;
else if(operation == Operation.MOVE_END && workingMode.equals(Action.EDIT)) //end
return operation;
//pgup / pgdown
else if(operation == Operation.PGDOWN || operation == Operation.PGUP)
return Operation.NO_ACTION;
else if(operation == Operation.NO_ACTION)
return Operation.NO_ACTION;
if(!isInEditMode())
return inCommandMode(operation, workingMode);
else
return Operation.EDIT;
}
private Operation inCommandMode(Operation operation, Action workingMode) {
//movement
if(operation == Operation.PREV_CHAR) {
if(mode == Action.MOVE)
return saveAction(Operation.MOVE_PREV_CHAR);
else if(mode == Action.DELETE)
return saveAction(Operation.DELETE_PREV_CHAR);
else if(mode == Action.CHANGE)
return saveAction(Operation.CHANGE_PREV_CHAR);
else
return saveAction(Operation.YANK_PREV_CHAR);
}
else if(operation == Operation.NEXT_CHAR) {
if(mode == Action.MOVE)
return saveAction(Operation.MOVE_NEXT_CHAR);
else if(mode == Action.DELETE)
return saveAction(Operation.DELETE_NEXT_CHAR);
else if(mode == Action.CHANGE)
return saveAction(Operation.CHANGE_NEXT_CHAR);
else
return saveAction(Operation.YANK_NEXT_CHAR);
}
else if(operation == Operation.HISTORY_NEXT) {
return saveAction(Operation.HISTORY_NEXT);
}
else if(operation == Operation.HISTORY_PREV)
return saveAction(Operation.HISTORY_PREV);
else if(operation == Operation.PREV_WORD) {
if(mode == Action.MOVE)
return saveAction(Operation.MOVE_PREV_WORD);
else if(mode == Action.DELETE)
return saveAction(Operation.DELETE_PREV_WORD);
else if(mode == Action.CHANGE)
return saveAction(Operation.CHANGE_PREV_WORD);
else
return saveAction(Operation.YANK_PREV_WORD);
}
else if(operation == Operation.PREV_BIG_WORD) {
if(mode == Action.MOVE)
return saveAction(Operation.MOVE_PREV_BIG_WORD);
else if(mode == Action.DELETE)
return saveAction(Operation.DELETE_PREV_BIG_WORD);
else if(mode == Action.CHANGE)
return saveAction(Operation.CHANGE_PREV_BIG_WORD);
else
return saveAction(Operation.YANK_PREV_BIG_WORD);
}
else if(operation == Operation.NEXT_WORD) {
if(mode == Action.MOVE)
return saveAction(Operation.MOVE_NEXT_WORD);
else if(mode == Action.DELETE)
return saveAction(Operation.DELETE_NEXT_WORD);
else if(mode == Action.CHANGE)
return saveAction(Operation.CHANGE_NEXT_WORD);
else
return saveAction(Operation.YANK_NEXT_WORD);
}
else if(operation == Operation.NEXT_BIG_WORD) {
if(mode == Action.MOVE)
return saveAction(Operation.MOVE_NEXT_BIG_WORD);
else if(mode == Action.DELETE)
return saveAction(Operation.DELETE_NEXT_BIG_WORD);
else if(mode == Action.CHANGE)
return saveAction(Operation.CHANGE_NEXT_BIG_WORD);
else
return saveAction(Operation.YANK_NEXT_BIG_WORD);
}
else if(operation == Operation.BEGINNING) {
if(mode == Action.MOVE)
return saveAction(Operation.MOVE_BEGINNING);
else if(mode == Action.DELETE)
return saveAction(Operation.DELETE_BEGINNING);
else if(mode == Action.CHANGE)
return saveAction(Operation.CHANGE_BEGINNING);
else
return saveAction(Operation.YANK_BEGINNING);
}
else if(operation == Operation.END) {
if(mode == Action.MOVE)
return saveAction(Operation.MOVE_END);
else if(mode == Action.DELETE)
return saveAction(Operation.DELETE_END);
else if(mode == Action.CHANGE)
return saveAction(Operation.CHANGE_END);
else
return saveAction(Operation.YANK_END);
}
//edit
else if(operation == Operation.DELETE_NEXT_CHAR) {
return saveAction(operation);
}
else if(operation == Operation.DELETE_PREV_CHAR && workingMode == Action.COMMAND)
return saveAction(operation);
// paste
else if(operation == Operation.PASTE_AFTER)
return saveAction(operation);
else if(operation == Operation.PASTE_BEFORE)
return saveAction(operation);
// replace
else if(operation == Operation.CHANGE_NEXT_CHAR) {
switchEditMode();
return saveAction(operation);
}
else if(operation == Operation.CHANGE_ALL) {
mode = Action.CHANGE;
return saveAction(operation);
}
// insert
else if(operation == Operation.MOVE_NEXT_CHAR) {
switchEditMode();
return saveAction(operation);
}
else if(operation == Operation.MOVE_END) {
switchEditMode();
return saveAction(operation);
}
else if(operation == Operation.INSERT) {
switchEditMode();
return saveAction(Operation.NO_ACTION);
}
else if(operation == Operation.INSERT_BEGINNING) {
switchEditMode();
return saveAction(Operation.MOVE_BEGINNING);
}
//delete
else if(operation == Operation.DELETE_ALL) {
//if we're already in delete-mode, delete the whole line
if(isDeleteMode())
return saveAction(operation);
else
mode = Action.DELETE;
}
else if(operation == Operation.DELETE_END) {
mode = Action.DELETE;
return saveAction(operation);
}
else if(operation == Operation.CHANGE) {
if(isChangeMode())
return saveAction(Operation.CHANGE_ALL);
else
mode = Action.CHANGE;
}
else if(operation == Operation.CHANGE_END) {
mode = Action.CHANGE;
return saveAction(operation);
}
/*
else if(c == VI_ENTER) {
switchEditMode();
return Operation.NEW_LINE;
}
*/
else if(operation == Operation.REPEAT) {
mode = previousMode;
return previousAction;
}
else if(operation == Operation.UNDO) {
return saveAction(operation);
}
else if(operation == Operation.CASE) {
return saveAction(operation);
}
else if(operation == Operation.YANK_ALL) {
//if we're already in yank-mode, yank the whole line
if(isYankMode())
return saveAction(operation);
else
mode = Action.YANK;
}
else if(operation == Operation.VI_EDIT_MODE ||
operation == Operation.EMACS_EDIT_MODE)
return operation;
return Operation.NO_ACTION;
}
@Override
public Action getCurrentAction() {
return mode;
}
@Override
public Mode getMode() {
return Mode.VI;
}
}