80 lines
2.3 KiB
Java
80 lines
2.3 KiB
Java
// 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.gwtexpui.user.client;
|
|
|
|
import com.google.gwt.event.logical.shared.ResizeEvent;
|
|
import com.google.gwt.event.logical.shared.ResizeHandler;
|
|
import com.google.gwt.event.shared.HandlerRegistration;
|
|
import com.google.gwt.user.client.Window;
|
|
import com.google.gwt.user.client.ui.DialogBox;
|
|
|
|
/** A DialogBox that automatically re-centers itself if the window changes */
|
|
public class AutoCenterDialogBox extends DialogBox {
|
|
private HandlerRegistration recenter;
|
|
|
|
public AutoCenterDialogBox() {
|
|
this(false);
|
|
}
|
|
|
|
public AutoCenterDialogBox(boolean autoHide) {
|
|
this(autoHide, true);
|
|
}
|
|
|
|
public AutoCenterDialogBox(boolean autoHide, boolean modal) {
|
|
super(autoHide, modal);
|
|
}
|
|
|
|
@Override
|
|
public void show() {
|
|
if (recenter == null) {
|
|
recenter =
|
|
Window.addResizeHandler(
|
|
new ResizeHandler() {
|
|
@Override
|
|
public void onResize(ResizeEvent event) {
|
|
final int w = event.getWidth();
|
|
final int h = event.getHeight();
|
|
AutoCenterDialogBox.this.onResize(w, h);
|
|
}
|
|
});
|
|
}
|
|
super.show();
|
|
}
|
|
|
|
@Override
|
|
protected void onUnload() {
|
|
if (recenter != null) {
|
|
recenter.removeHandler();
|
|
recenter = null;
|
|
}
|
|
super.onUnload();
|
|
}
|
|
|
|
/**
|
|
* Invoked when the outer browser window resizes.
|
|
*
|
|
* <p>Subclasses may override (but should ensure they still call super.onResize) to implement
|
|
* custom logic when a window resize occurs.
|
|
*
|
|
* @param width new browser window width
|
|
* @param height new browser window height
|
|
*/
|
|
protected void onResize(int width, int height) {
|
|
if (isAttached()) {
|
|
center();
|
|
}
|
|
}
|
|
}
|