blob: 3a65a8601d9c8bfd1ec46f68f37555f1fcb94e38 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php
*
* 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.android.ide.common.layout;
import com.android.annotations.NonNull;
import com.android.annotations.Nullable;
import com.android.ide.common.api.DropFeedback;
import com.android.ide.common.api.IDragElement;
import com.android.ide.common.api.INode;
/**
* An ignored layout is a layout that should not be treated as a layout by the
* visual editor (usually because the widget extends a layout class we recognize
* and support, but where the widget is more restrictive in how it manages its
* children so we don't want to expose the normal configuration options).
* <p>
* For example, the ZoomControls widget is not user-configurable as a
* LinearLayout even though it extends it. Our ZoomControls rule is therefore a
* subclass of this {@link IgnoredLayoutRule} class.
*/
public abstract class IgnoredLayoutRule extends BaseLayoutRule {
@Override
public DropFeedback onDropEnter(@NonNull INode targetNode, @Nullable Object targetView,
@Nullable IDragElement[] elements) {
// Do nothing; this layout rule corresponds to a layout that
// should not be handled as a layout by the visual editor - usually
// because some widget is extending a layout for implementation purposes
// but does not want to expose configurability of the base layout in the
// editor.
return null;
}
}
|
