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// Copyright 2008 Google Inc.
//
// 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.user.client.ui.FocusWidget;
import com.google.gwt.user.client.ui.KeyboardListenerAdapter;
import com.google.gwt.user.client.ui.TextBoxBase;
import com.google.gwt.user.client.ui.Widget;
/** Enables an action (e.g. a Button) if the text box is modified. */
public class TextSaveButtonListener extends KeyboardListenerAdapter {
private final FocusWidget descAction;
public TextSaveButtonListener(final FocusWidget action) {
descAction = action;
}
public TextSaveButtonListener(final TextBoxBase text, final FocusWidget action) {
this(action);
text.addKeyboardListener(this);
}
@Override
public void onKeyPress(final Widget sender, final char key, final int mod) {
if ((mod & (MODIFIER_CTRL | MODIFIER_ALT | MODIFIER_META)) == 0) {
switch (key) {
case KEY_UP:
case KEY_DOWN:
case KEY_LEFT:
case KEY_RIGHT:
case KEY_HOME:
case KEY_END:
case KEY_PAGEUP:
case KEY_PAGEDOWN:
case KEY_ALT:
case KEY_CTRL:
case KEY_SHIFT:
break;
default:
on(sender);
break;
}
} else if ((mod & MODIFIER_CTRL) != 0 && (key == 'v' || key == 'x')) {
on(sender);
}
}
private void on(final Widget sender) {
descAction.setEnabled(((TextBoxBase) sender).isEnabled());
}
}
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