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
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/*
* Copyright (C) 2015 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.android.messaging.ui.conversation;
import android.os.Bundle;
import android.support.v7.app.ActionBar;
/**
* The base class for a method of user input, e.g. media picker.
*/
public abstract class ConversationInput {
/**
* The host component where all input components are contained. This is typically the
* conversation fragment but may be mocked in test code.
*/
public interface ConversationInputBase {
boolean showHideInternal(final ConversationInput target, final boolean show,
final boolean animate);
String getInputStateKey(final ConversationInput input);
void beginUpdate();
void handleOnShow(final ConversationInput target);
void endUpdate();
}
protected boolean mShowing;
protected ConversationInputBase mConversationInputBase;
public abstract boolean show(boolean animate);
public abstract boolean hide(boolean animate);
public ConversationInput(ConversationInputBase baseHost, final boolean isShowing) {
mConversationInputBase = baseHost;
mShowing = isShowing;
}
public boolean onBackPressed() {
if (mShowing) {
mConversationInputBase.showHideInternal(this, false /* show */, true /* animate */);
return true;
}
return false;
}
public boolean onNavigationUpPressed() {
return false;
}
/**
* Toggle the visibility of this view.
* @param animate
* @return true if the view is now shown, false if it now hidden
*/
public boolean toggle(final boolean animate) {
mConversationInputBase.showHideInternal(this, !mShowing /* show */, true /* animate */);
return mShowing;
}
public void saveState(final Bundle savedState) {
savedState.putBoolean(mConversationInputBase.getInputStateKey(this), mShowing);
}
public void restoreState(final Bundle savedState) {
// Things are hidden by default, so only handle show.
if (savedState.getBoolean(mConversationInputBase.getInputStateKey(this))) {
mConversationInputBase.showHideInternal(this, true /* show */, false /* animate */);
}
}
public boolean updateActionBar(final ActionBar actionBar) {
return false;
}
/**
* Update our visibility flag in response to visibility change, both for actions
* initiated by this class (through the show/hide methods), and for external changes
* tracked by event listeners (e.g. ImeStateObserver, MediaPickerListener). As part of
* handling an input showing, we will hide all other inputs to ensure they are mutually
* exclusive.
*/
protected void onVisibilityChanged(final boolean visible) {
if (mShowing != visible) {
mConversationInputBase.beginUpdate();
mShowing = visible;
if (visible) {
mConversationInputBase.handleOnShow(this);
}
mConversationInputBase.endUpdate();
}
}
}
|
