| // Copyright (C) 2008 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.google.gerrit.client.ui; |
| |
| import com.google.gwt.event.dom.client.KeyCodes; |
| import com.google.gwt.event.dom.client.KeyPressEvent; |
| import com.google.gwt.event.dom.client.KeyPressHandler; |
| import com.google.gwt.user.client.ui.FocusWidget; |
| import com.google.gwt.user.client.ui.TextBoxBase; |
| |
| /** Enables an action (e.g. a Button) if the text box is modified. */ |
| public class TextSaveButtonListener implements KeyPressHandler { |
| private final FocusWidget descAction; |
| |
| public TextSaveButtonListener(final FocusWidget action) { |
| descAction = action; |
| } |
| |
| public TextSaveButtonListener(final TextBoxBase text, final FocusWidget action) { |
| this(action); |
| text.addKeyPressHandler(this); |
| } |
| |
| @Override |
| public void onKeyPress(final KeyPressEvent e) { |
| if (descAction.isEnabled()) { |
| // Do nothing, its already enabled. |
| } else if (e.isControlKeyDown() || e.isAltKeyDown() || e.isMetaKeyDown()) { |
| switch (e.getCharCode()) { |
| case 'v': |
| case 'x': |
| on(e); |
| break; |
| } |
| } else { |
| switch (e.getCharCode()) { |
| case KeyCodes.KEY_UP: |
| case KeyCodes.KEY_DOWN: |
| case KeyCodes.KEY_LEFT: |
| case KeyCodes.KEY_RIGHT: |
| case KeyCodes.KEY_HOME: |
| case KeyCodes.KEY_END: |
| case KeyCodes.KEY_PAGEUP: |
| case KeyCodes.KEY_PAGEDOWN: |
| case KeyCodes.KEY_ALT: |
| case KeyCodes.KEY_CTRL: |
| case KeyCodes.KEY_SHIFT: |
| break; |
| default: |
| on(e); |
| break; |
| } |
| } |
| } |
| |
| private void on(final KeyPressEvent e) { |
| descAction.setEnabled(((TextBoxBase) e.getSource()).isEnabled()); |
| } |
| } |